Method and device for using geographical location to determine when to exit an existing wireless communications coverage network
Abstract
"SYSTEM AND METHOD FOR USING GEOGRAPHICAL LOCATION TO DETERMINE THE TIME TO LEAVE AN EXISTING WIRELESS COMMUNICATION COVERAGE NETWORK". A system and method for determining when to leave an existing wireless coverage network is described. the method presents the geographic position of the device, determines a borderline, measures the position of each sample point with respect to the borderline, and starts at a predetermined initial value, maintains an execution sum in response to the position measurement. The method uses the boundary line to divide a coverage area of the existing coverage network into first and second zones. Then, the method decreases the sum of execution of sample point positions in the first zone and increases the sum of execution of sample point positions in the second zone. The method leaves the coverage network when the execution sum is greater than or equal to a predetermined final value and then resets the execution sum to the predetermined initial value.

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31 claims: 2 independent, 29 dependent
- 1REIVINDICAÇÕES 1. Em um dispositivo de comunicação sem fio móvel, um método para determinar o momento de deixar uma rede de cobertura existente de comunicação sem fio, o método compreendendo:compilar uma histórico de dados de localização geográfica de dispositivo;e, em resposta à histórico de dados de localização geográfica, deixar a rede de cobertura existente.
- 2O método, de acordo com a reivindicação 1, em que a compilação de uma histórico de dados de localização geográfica inclui:compilar dados acumulativos com relação à localização geográfica de dispositivo;e, comparar os dados acumulativos com um valor final predeterminado.
- 3O método, de acordo com a reivindicação 2, em que compilar os dados acumulativos com relação à localização geográfica de dispositivo inclui:fornecer a posição geográfica de dispositivo;medir a posição de cada ponto de amostra com relação a uma linha limítrofe pré-determinada;e, realizar uma função matemática em resposta à posição de medida.
- 4O método, de acordo com a reivindicação 3, em que fornecer a posição geográfica de dispositivo inclui fornecer periodicamente a posição geográfica de dispositivo.
- 5O método, de acordo com a reivindicação 3, em que realizar uma função matemática em resposta à posição de medida inclui manter uma soma de execução em resposta à posição de medida. 2/10
- 6O método, de acordo com a reivindicação 5, compreendendo adicionalmente:determinar a linha limítrofe;e, utilizar a linha limítrofe para divisão, em primeira e segunda zonas, de uma área que inclui pelo menos uma parte de uma área de cobertura para a rede de cobertura existente e pelo menos uma parte de uma área de cobertura para uma segunda rede de cobertura próxima à rede de cobertura existente, a primeira zona próxima a um primeiro lado da linha limítrofe orientada em direção ao centro geográfico para a rede de cobertura existente e a segunda zona próxima a um segundo lado da linha limítrofe;em que manter uma soma de execução em resposta à posição de medida inclui;diminuir a soma de execução para posições de ponto de amostra na primeira zona;e aumentar a soma de execução para posições de ponto de amostra na segunda zona.
- 7O método, de acordo com a reivindicação 6, em que a saída de rede de cobertura existente inclui sair quando a soma de execução for maior do que o valor final.
- 8O método, de acordo com a reivindicação 7, em que medir a posição de cada ponto de amostra com relação a uma linha limítrofe pré-determinada inclui atribuir uma quantidade de acumulação a cada posição de ponto de amostra;e, em que manter uma soma de execução em resposta à posição de medida inclui utilizar as quantidades de acumulação para alterar a soma de execução.
- 9O método, de acordo com a reivindicação 8, em que medir a posição de cada ponto de amostra com relação a uma linha limítrofe pré-determinada inclui:3/10 medir uma primeira posição de ponto de amostra, na primeira zona, uma primeira distância perpendicular a partir de um ponte sobre a linha limítrofe;e, medir uma segunda posição de ponto de amostra, na segunda zona, uma segunda distância perpendicular a partir da linha limítrofe;em que atribuir uma quantidade de acumulação a cada posição de ponto de amostra inclui atribuir uma primeira quantidade de acumulação à primeira posição de ponto de mostra e uma segunda quantidade de acumulação à segunda posição de ponto de amostra;sendo que diminuir a soma de execução para posições de ponto de amostra na primeira zona inclui utilizar a primeira quantidade de acumulação para diminuir a soma de execução;e, em que aumentar a soma de execução para posições de ponto de amostra na segunda zona inclui utilizar a segunda quantidace de acumulação para aumentar a soma de execução.
- 10O método, de acordo com a reivindicação 8, em que medir a posição de cada ponto de amostra com relação a uma linha limítrofe pré-determinada inclui:medir, na primeira zona, uma primeira pluralidade de posições de pento de amostra com uma posição de ponto de amostra uma terceira distância perpendicular, maior do que a primeira distância perpendicular, a partir da linha limítrofe e com cada posição sucessiva uma distância perpendicular maior do que uma posição precedente a partir da linha limítrofe;e, medir, na segunda zona, uma segunda pluralidade de posições de ponto de amostra com uma posição de ponto de amostra inicial uma quarta distância perpendicular, maior do que a segunda distância perpendicular, a partir da linha 4/10 limítrofe e com cada posição sucessiva uma distância perpendicular maior do que uma posição precedente a partir da linha limítrofe;em que atribuir uma quantidade de acumulação a cada posição de ponto de amostra inclui: atribuir uma primeira pluralidade de quantidades de acumulação sucessivamente maiores a respectivas posições na primeira pluralidade de posições de ponto de amostra, começando com a posição de ponto de amostra inicial;e, atribuir uma segunda pluralidade de quantidades de acumulação sucessivamente maiores a respectivas posições na segunda pluralidade de posições de ponto de amostra, começando com a posição de ponto de amostra inicial;sendo que diminuir a soma de execução para posições de ponto de amostra na primeira zona inclui utilizar respectivas quantidades de acumulação na primeira pluralidade de quantidades de acumulação para diminuir a soma de execução;e, em que aumentar a soma de execução para posições de ponto de amostra na segunda zona inclui utilizar respectivas quantidades de acumulação na segunda pluralidade de quantidades de acumulação para diminuir a soma de execução.
- 11O método, de acordo com a reivindicação 10, em que um valor de uma quantidade inicial na primeira pluralidade de valores de acumulação, correspondente à posição inicial na primeira pluralidade de posições de ponto de amostra, é maior do que o valor da primeira quantidade de acumulação;e, em que um valor de uma quantidade inicial na segunda pluralidade de valores de acumulação, correspondente à posição inicial na segunda pluralidade de 5/10 posições de ponto de amostra, é maior do que o valor da segunda quantidade de acumulação.
- 12O método, de acordo com a reivindicação 8, em que proporcionar a posição geográfica de dispositivo inclui a atribuição de dispositivo ao determinar a posição geográfica de dispositivo.
- 13O método, de acordo com a reivindicação 8, em que proporcionar a posição geográfica de dispositivo inclui receber a posição geográfica de dispositivo a partir de uma fonte externa ao dispositivo.
- 14O método, de acordo com a reivindicação 8, em que determinar a linha limítrofe inclui formar uma linha limítrofe que utiliza uma pluralidade de vetores que se referem ao centro geográfico da rede de cobertura existente.
- 15O método, de acordo com a reivindicação 8, em que determinar a linha limítrofe inclui adaptar a linha limítrofe a condições dinâmicas em uma célula de rede de cobertura.
- 16O método, de acordo com a reivindicação 15, em que adaptar a linha limítrofe a condições dinâmicas em uma célula de rede de cobertura inclui adaptação a condições dinâmicas em uma célula de Acesso Múltiplo por Divisão de Código (CDMA).
- 17O método, de acordo com a reivindicação 1, compreendendo adicionalmente:compilar informações com relação a áreas de cobertura para uma pluralidade de redes de cobertura de comunicação sem fio dentro, sobreposta, e próxima à rede de cobertura existente de comunicação sem fio;e, em que determinar a linha limítrofe inclui utilizar as informações compiladas para determinar linhas 6/10 limítrofes entre a rede de cobertura existente e a pluralidade de reces de cobertura.
- 18O método, de acordo com a reivindicação 1, em que deixar a rede de cobertura existente inclui entrar em uma segunda rede de cobertura e re-configurar o dispositivo sem fio a partir de um processador de sistema operacional de rede de cobertura existente para um segundo processador de sistema operacional de rede cobertura.
- 19Em um dispositivo de comunicação sem fio móvel, um sistema para determinar o momento de deixar uma rede de cobertura existente de comunicação sem fio, o sistema compreendendo:um localizador com uma primeira saída que fornece posições de amostra geográficas de dispositivo;e, um calculador com uma primeira entrada conectada à primeira saída de localizador e uma saída que fornece um sinal de controle de saída responsivo a uma histórico de posições de amostra geográficas de dispositivo e uma primeira linha limítrofe pré-determinada.
- 20O sistema, de acordo com a reivindicação 19, em que o calculador inclui:um circuito de comparação com: uma primeira entrada conectada à primeira entrada de localizador, sendo que o circuito de comparação seleciona a linha limítrofe e mede a diferença entre cada posição de amostra geográfica de dispositivo e a primeira linha limítrofe em resposta à aceitação de posições de amostra geográficas de dispositivo;e, primeira e segundas saídas para fornecer sinais de controle de decréscimo e acréscimo, respectivamente, em resposta à comparação;um circuito contador com primeira e segunda entradas conectadas às primeira e segunda saídas de 7/10 circuito de comparação, respecrivamente, sendo que o circuito contador realiza uma função matemática responsiva à aceitação dos sinais de controle de decréscimo e acréscimo e compara um resultado de função matemática com um valor final predeterminado;e, uma saída, conectada à saída de calculador, para fornecer o sinal de controle de saída em resposta à comparação.
- 21O sistema, de acordo com a reivindicação 20, em que o circuito de comparação divide, dentro de primeira e segunda zonas separadas pela primeira linha limítrofe, uma área que inclui pelo menos uma parte de uma área de cobertura para a rede de cobertura existente e pelo menos uma parte de uma área de cobertura para uma segunda rede de cobertura próxima à rede de cobertura existente, a primeira zona próxima a um primeiro lado da linha limítrofe orientada em direção ao centro geográfico da rede de cobertura existente e a segunda zona próxima a um segundo lado da linha limítrofe;e, em que a primeira saída de circuito de comparação fornece um primeiro sinal de controle de decréscimo em resposta à aceitação de uma posição de amostra geográfica de dispositivo na primeira zona e a segunda saída de circuito de comparação fornece um primeiro sinal de controle de acréscimo em resposta à aceitação de uma posição de amostra geográfica de dispositivo na segunda zona .
- 22O sistema, de acordo com a reivindicação 21, em que o circuito contador mantém um total de execução responsivo à aceitação dos sinais de controle de decréscimo e acréscimo e compara o total de execução com o valor final predeterminado. 8/10
- 23Ο sistema, de acordo com a reivindicação 22, em que o circuito contador inclui:um circuito de subtração com uma entrada conectada à primeira entrada de circuito contador e possuindo uma saída que fornece um primeiro valor de acumulação predeterminado em resposta à aceitação do primeiro sinal de controle de decréscimo;um circuito de adição com uma entrada conectada à segunda entrada de circuito contador e possuindo uma saída que fornece um primeiro valor de acumulação predeterminado em resposta à aceitação do primeiro sinal de controle de acréscimo;e, um totalizador com primeira e segunda entradas conectadas à saída de circuito de subtração e à saída de circuito de adição, respectivamente, e uma saída, conectada à saída de circuito contador, para fornecer o sinal de controle de saída.
- 24O sistema, de acordo com a reivindicação 23, em que o totalizador mantém o total de execução começando em um valor inicial predeterminado, diminui o total de execução de cada primeiro valor de acumulação, aumenta o total de execução de cada segundo valor de acumulação, e compara o total de execução com o valor final.
- 25O sistema, de acordo com a reivindicação 24, em que a saída de totalizador fornece o sinal de controle de saída quando o total de execução for maior, ou igual ao valor final e reajusta o total de execução para o valor inicial após fornecer o sinal de controle de saída.
- 26O sistema, de acordo com a reivindicação 20, compreendendo adicionalmente:um transceptor com uma porta de antena para receber informações de linha limítrofe e uma primeira saída para fornecer informações de linha limítrofe;9/10 êm quê o calculador possui uma segunda entrada conectada à primeira saída de transceptor;e, sendo cue o circuito de comparação possui uma segunda entrada conectada à segunda entrada de calculador.
- 27O sistema, de acordo com a reivindicação 20, em que o localizador gera informações com relação às posições de amostra de dispositivo.
- 28O sistema, de acordo com a reivindicação 20, em que a porta de antena de transceptor recebe posições de amostra geográficas de dispositivo determinadas por uma fonte externa ao dispositivo de comunicação sem fio e possui uma segunda saída conectada à primeira entrada de calculador para fornecer as posições.
- 29O sistema, de acordo com a reivindicação 20, em que o circuito de comparação forma linhas limítrofes utilizando uma pluralidade de vetores que se referem ao centro geográfico da rede de cobertura existente.
- 30O método, de acordo com a reivindicação 20, em que a primeira saída de transceptor fornece informações com relação a áreas de cobertura para outras redes de cobertura de comunicação sem fio dentro, sobrepostas, e próximas à rede de cobertura existente de comunicação sem fio;e, em que o circuito de comparação determina linhas limítrofes entre a rede de cobertura existente e outras redes de cobertura em resposta à aceitação de informações de área de cobertura.
- 31O sistema, de acordo com a reivindicação 20, compreendendo adicionalmente:um circuito integrado digital (IC) operativamente conectado ao transceptor, sendo que o IC digital inclui uma entrada;e, 10/10 um sub-sistema de re-configuração com uma entrada conectada à saída de sub-sistema de calculador e uma saída para fornecer informações de re-configuração em resposta ao sub-sistema de re-configuração que aceita um sinal de 5 término na entrada;e, em que o transceptor inclui uma entrada conectada à saída de sub-sistema de re-configuração. 1/4
Independent claims31
136 paragraphs in 11 sections, as filed
(54) Title: SYSTEM AND METHOD FOR USING GEOGRAPHICAL LOCATION TO DETERMINE THE TIME TO LEAVE AN EXISTING WIRELESS COMMUNICATION COVERAGE NETWORK (30) Unionist Priority: 26/08/2003 us 10 / 649,011 (71) Depositor (s) : Kyocera Wireless Corp. (US) (72) Inventor (s): Amit Kalhan, Henry Chang (74) Attorney: Montaury Pimenta, Machado & Lioce (86) International order: pct US2004 / 027085 of 19/08/2004 (87) International publication: wo 2005 / 022943 of 10/03/2005 (57) Abstract: SYSTEM AND METHOD FOR USING GEOGRAPHICAL LOCATION TO DETERMINE THE TIME TO LEAVE AN EXISTING WIRELESS COMMUNICATION COVERAGE NETWORK. A system and method for determining the time to leave an existing wireless coverage network is described. The method presents the geographical position of the device, determines a borderline, measures the position of each sample point with respect to the borderline, and starts at a predetermined initial value, maintains an execution sum in response to the position measurement. The method uses the boundary line to divide a coverage area of the existing coverage network into first and second zones. Then, the method decreases the sum of execution of sample point positions in the first zone and increases the sum of execution of sample point positions in the second zone. The method leaves the coverage network when the execution sum is greater than or equal to a predetermined final value and then resets the execution sum to 0 predetermined initial value.
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FIRST SUPPLEMENTARY LIMIT
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SYSTEM Ε METHOD FOR USING GEOGRAPHICAL LOCATION TO DETERMINE THE TIME TO LEAVE AN EXISTING WIRELESS COMMUNICATION COVERAGE NETWORK
FIELD OF THE INVENTION
The invention generally relates to devices for wireless communications and, more particularly, to a system and method for a wireless communications device to communicate with base stations to determine whether it should remain with an existing coverage network for wireless communications. thread.
BACKGROUND OF THE INVENTION
A key concern for the operation of devices for wireless communications is the acquisition of a coverage network with the highest probability of providing good quality of service. The following discussion uses Code Division Multiple Access (CDMA) networks as an example, however, it should be understood that the discussion applies to other wireless communications networks. As soon as a CDMA device approaches the edge of a cell that has CDMA coverage, the device begins to operate at the sufficiency limit of the direct and / or reverse link of the CDMA network and a decision is required regarding a cell's output current. It is important to make an accurate determination of when to leave the current cell, as these are penalties associated with both premature and delayed exits from an existing wireless coverage network, hereinafter referred to as an early exit coverage network, leading to loss
Existing ones.
unnecessary use of the preferred coverage system and may lead to the acquisition of a similar coverage network with degradation resulting from battery performance. The exit
2/30 delayed can lead to page losses or dropped calls due to reverse link limitations.
It is notorious to allow communication devices without a river to remain in the existing coverage until the complete loss of the paging channel. This approach typically results in delayed departures. It is also clear that the exit process starts when the device reaches a predetermined location. To implement this approach, a boundary line or boundary zone at a predetermined distance from the base station is established by the base station (BS) or mobile switching center (MSC) for the coverage network that provides service to the device. Typically, the BS also determines the location of the device. When the device moves before the boundary line or within the boundary zone, the device leaves the existing coverage network.
Figure 6 is a pictorial representation that shows the trajectory of a wireless device through an existing coverage network and an adjacent coverage network (prior art). Unfortunately, the border line / zone approach described above can result in early exits from the existing coverage network. That is, a momentary deviation across the boundary line can cause the wireless communications device to leave the existing coverage area even when the device returns quickly and remains in the original coverage network. For example, in Figure 6, the device leaves network 1 and acquires network 2 when it moves from point A to B, but shortly after that, it leaves network 2 and re-acquires network 1 when it moves from point B to C and then to point D. Unfortunately, during each transition between the coverage networks, data transmission can be impaired and the load of an extra battery consumed. Furthermore,
3/30 that the device switches by demodulating from one Air Interface to another, as a result of the transition, the device must also reconfigure its resources to accommodate the new Air Interface. The problem is exacerbated when the device goes through the ping-pong effect, or oscillates between roof nets as a result of a series of rapid deviations across the boundary line, for example, moving through points D to I in Figure 6.
In a CDMA cell, the satisfactory operating area (the air boundary of the coverage area), and therefore the location of appropriate boundary lines, depends on the traffic within the cell. Due to intercellular and intracellular interference, one may have the impression that the noise floor at the base station increases as the traffic load increases within the cell. As a result, wireless devices in the cell must transmit additional energy to overcome increased interference, effectively reducing the cell. Cell shrinkage can change the area suitable for the coverage network handoff closest to the center of the cell. Unfortunately, neighboring sites are typically fixed and cannot adapt to changes in location for the area that may be suitable for the coverage network.
It could be advantageous if a wireless communications device that operates near the edge of an existing coverage network could determine precisely when to leave the existing coverage network to avoid early or delayed exits.
<td colspan="2">Could</td><td>to be</td><td>advantageous</td><td>if a device</td>
<td>communications</td><td>without</td><td>thread</td><td>that operates</td><td>near an edge of</td>
<td>cell of</td><td>an</td><td>network</td><td colspan="2">existing coverage could</td>
precisely determine when to leave the network
4/30 existing coverage to avoid oscillation between existing and adjacent coverage networks.
It could be advantageous if a wireless communications device that operates close to the cell edge of an existing CDMA coverage network could dynamically modify parameters, based on actual conditions on the network, to determine when to leave the coverage network. CDMA.
SUMMARY OF THE INVENTION
The present invention was created to address the problem of determining when a wireless communications device operating near the cell edge of an existing coverage network must leave the existing coverage network. The invention recognizes that the analysis of the distance of wireless communications device from a base station can be used to determine this output. The invention addresses this requirement by compiling a geographic location data history for the wireless communications device, and in response to the geographic location device data history, it leaves the existing coverage network.
Consequently, a method is provided to determine when to leave a wireless coverage network. The method presents the device's geographic position, determines a borderline, measures the position of each sample point in relation to the borderline, and, starts at a predetermined initial value, maintains an execution sum in response to the position measurement. The method uses the boundary line to divide a coverage area of the existing coverage network into first and second zones. The method then decreases the run sum for sample point positions in the first zone and increases the run sum for run point positions.
5/30 sample in the second zone. The method leaves the existing coverage network when the execution sum is greater than or equal to a predetermined final value and then resets the execution sum to the initial predetermined value.
Additional details of the method described above, and a system for determining when to leave an existing wireless coverage network are provided below.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a schematic block diagram showing a system for determining when to leave an existing wireless coverage network;
Figure 2 is a pictorial representation showing a first boundary line and first and second zones between an existing coverage network and an adjacent coverage network.
Figure 3a is a pictorial representation showing multiple boundaries and zones between an existing coverage network and an adjacent coverage network.
Figure 3b is a table that lists the positions shown in Figure 3a and corresponding adjustments to a run total.
Figure 4 is a flowchart that illustrates a method for determining when to leave an existing wireless coverage network.
Figure 5 is a flow chart that further illustrates the method shown in Figure 4.
Figure 6 is a pictorial representation that shows the trajectory of a wireless device through an existing coverage network and an adjacent coverage network (prior art).
6/30
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Figure 1 is a schematic block diagram showing a system 100 for determining when to leave an existing wireless coverage network. The wireless device system 100 includes a locator 102 with a line output 104 to provide the geographic sample positions of the device and a calculator 106 with an input connected to line 104. The calculator 106 can be implemented in software or hardware. In some respects, the inline locator output 102 provides geographic sample positions of devices periodically. The calculator 106 has an in-line output 107 to provide an output control signal responsive to a history of device geographic sample positions and a first boundary line.
The calculator 106 includes a comparison circuit
108 and a counter circuit 110. Comparison circuit 108 includes an input connected to calculator input 106 over line 104. Comparison circuit 108 selects the boundary line and measures the difference between each geographic sample device position and the first boundary line in response to acceptance of geographic device sample positions. In some respects, comparison circuit 108 uses a lookup table (LUT) (not shown) in comparison circuit 108 to obtain information for selecting the boundary line. In some aspects, system 100 includes a transceiver 112 with an antenna port over line 114 to accept boundary line information transmitted from a base station (not shown) and an output over line 116 to provide boundary line information. In this respect, the calculator 106 has an input on line 116 and the comparison circuit 108 has an input connected to the input of
7/30 calculator 106 on line 116. Comparison circuit 108 uses accepted information on line 116 to select the boundary line. In some respects, comparison circuit 108 stores the base station information in the LUT noted above.
In some respects, device 101 initiates an output from the existing network in response to the output control signal over line 107. In some respects, device 101 initiates an output from the existing network in response to a command from a base station ( not shown). In these respects, transceiver 112 includes an input connected to calculator output 106 over line 117A; and calculator 106 includes an input over line 117A to an output over line 117B. In response to acceptance of outgoing signal control over line 107, transceiver antenna port 112 over line 114 sends a signal to a base station (not shown) for the current coverage network. The base station then determines whether device 101 should leave the existing coverage network. If it is decided to leave the existing coverage network, the base station provides a command signal to transceiver 112 over line 114. Transceiver output 112 over line 117A provides the command signal and, in response to calculator 106 that accepts command signal over line 117A, calculator output 106 over line 117B provides a base station output signal. Device 101 leaves the existing coverage network in response to the base station output signal over line 117B.
The comparison circuit 108 includes outputs on lines 118 and 120, respectively, to provide decrease and increase control signals, respectively, in response to the comparison. The counter circuit 110 includes inputs on lines 118 and 120, respectively, performs
8/30 mathematical functions responsive to the acceptance of the decrease and increase ccntrcle signals, and compares the results of the mathematical functions with a predetermined final value. Counter circuit 110 includes an output connected to calculator output 106 over line 107 to provide the
<td>Control of</td><td>output in response to the comparison.</td>
<td>THE</td><td>Figure 2 is a pictorial representation that</td>
<td>shows a</td><td>first borderline on its threshold and</td>
<td>first and</td><td>second zones between a coverage network</td>
<td>existing and</td><td>an adjacent coverage network. Figure 2 does not</td>
<td>is drawn</td><td>to scale. The distance from a device without</td>
wire from a boundary line between an existing coverage network and a joint coverage area can be applied to the output problem. Although straight boundary lines are shown in Figure 2, it should be understood that other configurations, such as a circular boundary line, are also applicable. Ά distance from the boundary line from the base station can be selected according to the desired system performance. Another possible distance is the maximum distance traveled from the base station associated with the sufficiency limit of direct and / or reverse link. That is, the geographic sample positions of the device beyond the base station than the limit line indicate an exchange in the
<td>sense of</td><td>unsatisfactory functioning, and the positions</td>
<td>existing,</td><td>between the border line and the base station,</td>
<td>indicate a</td><td>exchange towards a satisfactory operation.</td>
The device must exit if it is consistently located beyond the boundary line.
comparison circuit (reference designator 108 in Figure 1) selects a boundary line for dividing, in first and second zones, an area that includes at least part of a coverage area for the
9/30 existing coverage network and at least part of a coverage area for a second coverage network close to the existing coverage network, as shown in Figure 2. The first zone is located between the boundary line and the geographic center of the existing coverage network. That is, the first zone is generally the area of satisfactory operation. The second zone is generally the area of unsatisfactory operation (with respect to the existing coverage network). The extent and limits of the first and second zones can vary in response to desired system performance, as described below.
The compilation of historical data with respect to the device's geographical sample positions allows identification of the longer term trends associated with the device's geographical sample positions, such as compatible positioning on one side or the other of the boundary line. These trends are more accurate indicators of the quality of coverage for the wireless communication device.
Returning to Figure 1, the comparison circuit output 108 on line 118 provides a first decrease control signal in response to the acceptance of a geographic sample device position in the first zone of comparison circuit output 108 on line 120 provides a first plus control signal in response to the acceptance of a device geographic sample position in the second zone. In some respects, counter circuit 110 includes a subtraction circuit 122, an addition circuit 124, and a totalizer 126. Subtraction circuit 122 includes an input connected to the counter circuit input on line 118 and an output on line 128 that provides a first predetermined accumulation value in response to the acceptance of the first
10/30 decrease control. The addition circuit 124 includes an input connected to the counter circuit input over line 120 and an output over line 130 that provides a second predetermined accumulation value in response to the acceptance of the first plus control signal.
Totalizer 126 has inputs connected to lines 128 and 130, respectively and an output connected to the counter circuit output over line 107. Totalizer 126 accepts the first and second accumulation values and uses the accumulation values to keep the running total starting at a predetermined starting value. 0 totalizer 126 decreases the run total for each first accumulation value, increases the run total for each second accumulation value, and compares the run total with the final value. Totalizer output 126 provides the output control signal when the run total is greater than, for example, the final value and resets the run total to the starting value after providing the output control signal.
The final value can be selected according to the desired performance of the system. However, the final value must be coordinated with the accumulation values. That is, the final value must be high enough that a series of second accumulation values (from geographical sample positions in the second zone), not indicative of compatible positioning in the second zone, causes the total execution to equal or exceed the final value. Similarly, the final value must be low enough that a longer series of second accumulation values, which indicates that the compatible positioning in the second zone, does not cause the total execution to equal or exceed the final value.
11/30
A consequence associated with the compilation of historical data on the geographical sample positions of the device is the biasing of the total run with geographical sample positions in the first zone. The potential deviation from the run total is a consequence, as the run total must be able to respond (approximate the final value) if the wireless communication device operates for a period of time in the second zone. This may not be possible if the wireless communication device has been operating previously for a period of time in the first zone with the result that a large number of first accumulation values causes the total run to move well below the final value. .
To avoid deviation, totalizer 126 decreases the run total for each first accumulation value only if the run total is greater than a predetermined minimum total value. Otherwise, the execution account is kept at the minimum total amount until a second accumulation value is found. According to the boundary line and the final value, the minimum total value can be selected according to the desired performance of the system and is coordinated with these other values.
The assignment of values for each first and second accumulation values can be selected according to the desired system performance. The accumulation values are also coordinated with the borderline, final value, and the minimum total value. In one aspect, the absolute value of the first accumulation value equals the absolute value of the second accumulation value. That is, the device positions in the first and second zones are provided with equal weight in the analysis of the moment of leaving the existing coverage area.
12/30
Returning to Figure 2, the absolute values of the accumulation values in the first and second zones are shown as 1. Alternatively, the unequal weight can be attributed to the accumulation values to divert system operation 100 with respect to leaving or remaining in the existing coverage network. For example, assigning more weight to the device's geographical sample positions in the second zone could result in a faster exit from the existing coverage network, since higher second accumulation values could quickly add the total run to the terminal value.
Figure 3a is a pictorial representation showing multiple boundaries and zones between an existing coverage network and an adjacent coverage network. THE
Figure 3a is not drawn to scale. The simplicity of the system 100 described in Figure 2 is offset by limitations. Assigning the same accumulation value to all points within the first or second zones does not have satisfactory device operation variation within a zone and therefore does not have positional trends within a zone. For example, in the first zone, the system does not differentiate between device positions relatively close to the base station (indicative of satisfactory device operation) and device positions relatively close to the boundary line (indicative of less satisfactory device operation). Therefore, in some respects, predetermined boundary lines, which define additional zones, are included to increase the accuracy and sensitivity of the system. The first supplementary borderline defines the first and second zones shown in Figure 3a. The second supplementary borderline defines the third and fourth zones shown in Figure 3a. The limits
Supplementary 13/30 allow the system to identify the geographical sample positions of devices associated with greater accuracy of operation in areas with significantly better or worse coverage. The supplementary boundary lines shown in Figure first borderline and boundary line (straight line) that
3a are parallel to the same line type as the first boundary line.
However, it is understood that system 100 is not limited to line types similar to the first boundary line and supplementary boundary lines or to parallel configurations of the first boundary line and supplementary lines.
Therefore, returning to Figure 1, comparison circuit 108 locates the geographical sample positions of the device within the first to fourth zones. 0 comparison circuit 108 then provides: the first decrease control signal for each device geographic sample position in the first zone; a second decrease control signal for each geographic device sample position in the third zone; the first plus control signal for each geographic device sample position in the second zone; and a second plus control signal for each geographic device sample position in the fourth zone.
The minus circuit 122 accepts the first and second decrease control signals over line 118, provides the first accumulation value in response to the first decrease control signal; and provides a third predetermined accumulation value in response to the second decrease control signal. Each accumulation value is provided on line 128.
The addition circuit 124 accepts the first and second markup signals over line 120,
14/30 provides the second accumulation value in response to the first plus control signal, and provides a fourth predetermined accumulation value in response to the second plus control signal. Each accumulation value is provided on line 130.
Totalizer 126 accepts the first, second, third, and fourth accumulation values, decreases the total run for each first and third accumulation value, and increases the total run for each second and fourth accumulation value. Totalizer 126 decreases the total run for each first and third accumulation value only if the total run is greater than the minimum total value.
The third and fourth accumulation values are higher than the first and second accumulation values, respectively to show greater accuracy associated with the third and fourth zones. Therefore, the run total moves quickly towards or out of the final value in response to these accumulation values.
Returning to Figure 3a, a selection of the supplementary boundary lines and associated accumulation values has a significant impact on determining the time to leave the existing area. In one aspect of system 100, supplementary second borderlines are equidistant from the first borderline, as shown in Figure 3a. So in one respect, the absolute value of the third accumulation value equals the absolute value of the fourth accumulation value. This results in an equal weighting of device geographic sample positions in the third and fourth over the coverage of the first and zones. In Figure 3a, the third fourth accumulation values are 3. Alternatively, when the supplementary first and second border lines are equidistant
15/30 of the first boundary line, the unequal weight can be attributed to the accumulation values to deviate the operation of system 100 with respect to leaving or remaining in the existing coverage network. For example, assigning more weight to values in the fourth zone could result in a faster exit from the existing coverage network, since the higher accumulation values could add more quickly the execution value to the final value.
In some respects (not shown), the first and second border lines are not equidistant from the first border line. For example, the first supplementary borderline is further away from the first borderline than the second supplementary borderline is from the first borderline. If the third and fourth accumulation values are the same, then less weight will be given to the device's geographical sample positions in the best coverage area (the third zone). Alternatively, as described above, system operation 100 can be additionally bypassed with respect to leaving or remaining in the existing coverage network by assigning unequal third and fourth accumulation values.
Additional supplementary border lines can be added to system 100 to perfectly adjust the system. For example, as shown in Figure 3a, a third supplementary borderline can be added to define a fifth zone next to the third zone. Also as shown in Figure 3a, a fourth supplementary borderline can be added to define a sixth zone next to the fourth zone.
Returning to Figure 1, for the geographical sample positions in the fifth and sixth zones; comparison circuit 108 provides third decrease and increase control signals, respectively; the circuit
16/30 subtraction 122 and addition circuit 124 provide the fifth and sixth accumulation values, respectively, and the totalizer 126 decreases and increases the responsive execution total to the fifth and sixth accumulation values and provides the output signal as described above. In general, the fifth and sixth accumulation values are higher than the third and fourth accumulation values to depict the greater accuracy associated with the fifth and sixth zones. In Figure 3a, the absolute value of the fifth and sixth accumulation values are equal to 5. In some respects, the supplementary third and fourth borderline lines are equidistant from the first borderline line. However, the previous discussions in Figure 3a regarding the selection of accumulation values and supplementary boundary locations apply to this example as well, consequently, other combinations of accumulation values and supplementary boundary distances from the first boundary line are possible. It is to be understood that system 100 is not limited to any particular number of limits or zones and that additional border lines and zones can be added.
In some respects, the number of additional border lines on each side of the first border line may not be the same (not shown). For example, only the first supplementary borderline could be included. This could result in a slower exit from the existing coverage network, since the higher accumulation values associated with the first supplementary borderline could quickly decrease the total run away from the final value. However, the previous discussions in Figure 3a regarding the selection of accumulation values and boundary locations apply to this example as well,
Consequently, other combinations and results are possible.
Figure 3b is a table that lists the device positions shown in Figure 3a and corresponding adjustments to a run total. Returning to Figure 3a, a series of successive device geographic sample positions (A through I) is shown to illustrate the operation of system 100. Figure 3b adopts a minimum total value of zero, a final value of 12, and a total zero point execution. As shown in Figure 3b, the total execution exceeds the final value in position H, in this case the totalizer (reference indicator 126 does not emit an output signal. At point Η, the device leaves the existing coverage network and acquires the network coverage. At this time, the coverage network adjacent to the trainer becomes the existing network within the context of the 100 moment system, Figure 1) of coverage. For example, the geographical sample positions of the device in the second, fourth, and sixth zones now cause the comparison circuit (reference designator 108 in Figure 1) provides signs of decrease control and the geographical sample positions in the first, third and fifth zones now cause the comparison circuit (reference designator 108 in Figure 1) to provide incremental control signals. In this way, as shown in Figure 3b, the total execution remains at the minimum total value of zero when it moves from point H to point I.
Returning to Figure 1, in some respects, the geographic sample positions provided by locator 102 over calculated by locator 102. In some respects, transceiver port 112 over line 114 accepts geographic sample positions calculated from an external location (not from line 104 device are
18/30
<td>shown),</td><td>such as a</td><td>base station.</td><td>An outlet</td><td>in</td>
<td>transceiver</td><td>112 scbre line</td><td>131 provides the</td><td>positions up</td><td>an</td>
<td>input from</td><td>locator 102,</td><td>. 0 locator</td><td>102 provides</td><td>at</td>
<td colspan="2">positions on line 104.</td><td></td><td></td><td></td>
<td>At</td><td colspan="2">information provided by</td><td>device</td><td>1 Λ Ί ± u 1</td>
can be used to calculate the geographical sample positions of the device whether the calculations are performed by locator 102 or by an external source. One approach to providing information is pseudo-variation using information from the Global Positioning System (GPS). Therefore, in some respects, locator 102 includes a GPS subsystem 132. GPS subsystem 132 receives GPS position information for wireless device 101 from GPS satellites (not shown). For aspects where locator 102 calculates positions, a subsystem output 132 is connected to locator output 102 over line 104. For aspects where an external location calculates positions, a GPS subsystem output 132 over line 133 is calculated for a locator output 102 that is connected to a transceiver input 112. The GPS subsystem output 132 over line 133 pseudo-variation information. Transceiver antenna port 112 over line 114 provides pseudo-variation information for transmission to the external location.
Another approach to providing information is the triangulation network, for example, Advanced Direct Link Triangulation (AFLT). For this approach, device 101 generates information regarding the device position using propagation delays from three different base stations (not shown). The generation of this information is shown in Figure 1. For aspects where locator 102 calculates positions, locator 102 uses triangulation network information to calculate positions
19/30 device geographic sample and provides positions over line 104. For aspects where an outside location calculates positions, transceiver antenna port 112 over line 114 provides triangulation network information for transmission to the outside location .
In some respects, system 100 uses a combination of pseudo-variation and triangulation network to obtain information regarding geographic device sample positions.
In some respects, system 100 includes a re-configuration subsystem 134 and a digital integrated circuit 135. The re-configuration subsystem 134 includes system processors for coverage networks such as Code Division Multiple Access (CDMA) , Time Division Multiple Access (TDMA), and Global System for Mobile Communications (GSM). The re-configuration subsystem 134 has an input connected to line 107 and an output over line 136 connected to a digital IC input and a transceiver input 112. In response to the acceptance of the output control signal over line 107, the re-configuration subsystem 134 modifies the system processor that operates on the existing coverage network to operate on a second coverage network, the second network adjacent to the existing coverage network along the first boundary line. The reconfiguration subsystem output over line 136 provides reconfiguration information and instructions for the second network. In response to accepting information and instructions on line 136, transceiver 112 and digital IC 135 reconfigure the second network.
The calculator 106 has an output over line 137 and the comparison circuit 108 has an output connected to the output of calculator 106 over line 137. In response to
20/30 determination of boundary lines, the comparison circuit output 108 over line 107 provides information regarding the second coverage network. The reconfiguration subsystem 134 has an input connected to the calcuter output over line 137 and, in response to an input, prepares the reconfiguration subsystem 134 to modify the processor for the existing network to operate on the second network coverage.
In some respects, the reconfiguration subsystem 134 includes a memory subsystem 138 for storing the operating system processor software for coverage networks, such as CDMA, TDMA, and GSM, and a microprocessor 140. The memory subsystem 138 has an input connected to the reconfiguration subsystem output 134 over line 137 and, in response to an entry, pre-selects the operating system processor software corresponding to the coverage network identified in the entry about line 137. The memory circuit 138 has an input connected to the re-configuration subsystem input 134 over line 107 and an output over line 142. In response to receiving an output signal over line 107, the memory subsystem output 138 provides the pre-selected operating system processor software over line 142. Microprocessor 140 has an input over line 142 and, in response to acceptance from an entry on line 142, transfers the pre-selected operating system processor software to replace the operating system processor software with the existing coverage network. 0 microprocessor 140 has an output connected to reconfiguration subsystem output 134 over line 136. In response to the transfer of the pre-selected operating system processor software, the microprocessor output
21/30
140 provides re-configuration information and instructions for the second network.
In some respects, system 100 includes multiple transceivers and combinations of digital IC (not shown) to support, respectively, coverage networks such as CDMA, TDMA and GSM. In these respects, calculator 106 has outputs (not shown) connected to the respective transceiver and digital IC combinations and, in response to totalizer 126 that provides the output signal, the appropriate calculator outputs 106 provide signals, respectively, to disable the transceiver and digital IC for the existing network and to activate the transceiver and digital IC for the second network.
In some respects, comparison circuit 108 forms boundary lines using vectors referred to the geographic center of the existing coverage network. The vectors can be stored in a memory subsystem (not shown) in comparison circuit 108, or can be supplied from the base station (not shown) via transceiver output 112 over line 116. Returning to Figure 2 , in some ways, vectors can be
<td>two points</td><td>geographic</td><td>(points</td><td>A and</td><td>B)</td><td>what</td><td>define</td><td>at</td>
<td>extremities</td><td colspan="3">of a borderline</td><td>in</td><td colspan="2">straight line.</td><td>In</td>
<td colspan="2">some aspects, the vector</td><td>Can be</td><td colspan="2">a lightning</td><td>(not</td><td>shown)</td><td>and</td>
a circular boundary line (not shown) is a radius equal to the vector length.
As described above, a boundary line is typically formed at the limit of satisfactory operation within an existing coverage network. However, the satisfactory operating limit is sensitive to changes in environmental conditions and / or the state of network operations, for example, loss of network signals. For any operating system, for example, TDMA, this limit is relatively
22/30 stable. However, in a CDMA cell, the satisfactory operating area (air boundary of the coverage area) depends on the traffic load within the cell, as described in the Fundamentals Section. Returning to Figure 1, therefore, in some respects, transceiver antenna port 112 over line 114 receives information from an existing network base station (not shown) regarding dynamic conditions in the network cell. Transceiver output 112 over line
116 provides response to dynamic condition information and upon acceptance of information on line 116, comparison circuit 108 adapts boundary lines to dynamic conditions. In some respects, transceiver antenna port 112 over line 114 receives information from an existing CDMA network base station. So, for example, adapting the boundary lines by comparison circuit 108 may include moving the boundary line closer to a base station in response to changes in cell size caused by an increase in traffic load within the cell.
In some respects, system 100 can be used to obtain coverage area information for other wireless coverage networks within, overlapping or near the wireless coverage network. This can be useful when the wireless device is operating in areas for which the base station or system 100 does not yet have boundary line information. In particular, the location and coverage areas for intermittently operational systems, such as 802.11 systems, can be obtained and stored for future reference. In some ways,
100 the system warns the user (warning components not shown) 101 launches a device coverage area 101 when the 802.11 device is known and
23/30 provides the user with the opportunity to switch device 101 from the existing coverage network to the 802.11 co-coverage network (switching components not shown). Once inside the coverage area, an exit from the existing coverage that uses the boundary lines and zones, as described above, can be implemented.
Figure 4 is a flowchart that illustrates a method for determining when to leave an existing wireless coverage network. Although the method in Figure 4 (and Figure 5 below) is shown as a sequence of numbered steps for clarity, no order should be inferred from the numbering unless explicitly stated. It should be understood that some of these steps can be skipped, performed in parallel, or performed without the requirement to maintain a strict order of sequence. The method starts with Step 400. Step 402 compiles a history of device geographic location data. Euapa 404 compiles cumulative data regarding the geographic location of the device. Step 406 compares the cumulative data with a predetermined final value. Step 408 in response to historical geographic location data, exits the existing coverage network. In some respects, the existing coverage network in Step 408 includes output in response to a command from the base station to the existing coverage network.
Figure 5 is a flowchart that illustrates the method shown in Figure 4. The method starts with Step 500. Step 502 provides the device's geographic position. Step 504 determines a borderline. Step 506 measures the position of each sample point with respect to a predetermined boundary line. Step 508 assigns a
24/30 accumulation quantity of each sample point position. Step 510 performs a mathematical function in response to the measurement position. Step 512 maintains an execution sum. Step 514 uses the boundary line for dividing, in first and second zones, an area that includes at least part of a coverage area for the existing coverage network and at least part of a coverage area for a second network of coverage close to the coverage network, the first zone close to a first side of the boundary line oriented towards the geographic center of the existing coverage network and the second zone close to a second side of the boundary line. Step 516 decreases the run sum for the sample point positions in the second zone. Step 518 uses the accumulation quantities to change the run sum. Step 520 exits when the execution sum is greater than or equal to a final value.
In some respects, providing the geographic position in Step 502 includes periodically providing the geographic device position. In some respects, providing the device geographic position at Step 502 includes the device that assists in calculating device geographic position. In some respects, providing the device geographic position at Step 502 includes the device that receives the device geographic position from a source external to the device.
In some respects, a Step 503 compiles information regarding coverage areas for a plurality of wireless coverage networks within, overlapping, or next existing wireless coverage network. So, the determination of boundary lines in the
Step 504 includes using the compiled information to determine the boundary lines
25/30 between the existing coverage network and the plurality of coverage networks. In some respects, compiling information regarding coverage areas for the plurality of wireless coverage networks in Step 503 includes compiling information to intermittently activate coverage networks.
In some respects, determining a borderline in Step 504 includes the device that calculates borderlines or selects borderlines from information available on the device. In some respects, determining a borderline in Step 504 includes the device that determines borderlines from information received from a source external to the device. In some respects, the determination of a borderline in Step 504 includes the formation of a borderline that uses a plurality of vectors referring to the geographic center of the existing coverage network. In some respects, the formation of a borderline that uses a plurality of vectors includes using first and second vectors, to identify first and second geographical points, respectively, and to form a straight line bordering between the first and second geographical points. In some respects, forming a boundary line using a plurality of vectors includes using a third vector to identify a ray and forming a circular boundary line that uses a length of the third vector as the length of the circle radius. In some respects, forming a borderline using a plurality of vectors includes receiving vectors from a base station.
In some respects, determining a boundary line in Step 504 includes adapting the boundary line to dynamic conditions in a coverage network cell.
26/30
In some respects, measuring the position of each sample point with respect to a predetermined boundary line in 5C6 includes measuring a first sample point position, in the first zone, a first perpendicular distance from a first point on the boundary line and measuring a second sample point position, in the second zone, a second perpendicular distance from the boundary line. Then, assigning an accumulation quantity to each sample point position in Step 508 includes assigning a first accumulation quantity to the first sample point position and a second accumulation quantity to the second sample point position. Then decreasing and increasing the run sum for sample point positions in the first zone in Step 516 includes using the first run amount to decrease the run run and using the second run amount to increase the run run. In some respects, the absolute value of the first accumulation quantity equals the absolute value of the second accumulation quantity. In some respects, the first and second perpendicular distances are the same.
In some respects, measuring the position of each sample point with respect to a predetermined boundary line on Ecapa 506 includes measuring, in the first zone, a first plurality of sample point positions with an initial sample point position a third distance perpendicular, greater than the first perpendicular distance, from the boundary line and with each successive position a greater perpendicular distance from the boundary line than a preceding position. By this it is understood that the initial position in the first plurality is the closest position, in the first plurality, up to the boundary line and the subsequent positions
27/30 in the first plurality are increasingly distant from the boundary line. In some respects, measuring the position of each sample point with respect to a boundary line predetermined in Step 506 includes measuring, in the second zone, a second plurality of sample point positions with an initial sample point position one fourth perpendicular distance, greater than the second perpendicular distance, from the boundary line and with each successive position a greater perpendicular distance from the boundary line than a preceding position. By this it is understood that the initial position in the second plurality is the closest position, in the second plurality, until the borderline and subsequent positions in the second plurality are increasingly distant from the borderline.
In some respects, assigning an accumulation amount to each sample point position in Step 508 includes assigning a first plurality of successively larger accumulation quantities to respective positions in the first plurality of sample point positions, starting with the initial sample point. By this it is understood that the initial position in the first plurality is attributed to the lowest accumulation value and each subsequent position in the first plurality is attributed an accumulation amount greater than that attributed to the previous position of the subsequent position. The value of an initial quantity in the first plurality of accumulation values, corresponding to the initial position in the first plurality of sample point positions, is greater than the value of the first accumulation quantity and a value of an initial quantity in the second plurality of sample points. accumulation values, corresponding to the initial position in the second plurality of
28/30 sample bridge positions, is greater than the value of the second accumulation quantity. Then, assigning an accumulation quantity to each sample point position in Step 508 includes assigning a second plurality of successively larger accumulation quantities to respective positions in the second plurality of sample bridge positions, starting with the initial sample. By this it is understood that for the initial position in the second plurality, the lowest accumulation value is assigned and for each subsequent position in the second plurality, an accumulation quantity greater than that attributed to the position preceding the subsequent position is attributed. Then, decreasing and increasing the run sum for sample point positions in the first zone and second zone, respectively, in Step 514 includes using respective accumulation quantities in the first plurality of accumulation quantities to decrease the run sum and using respective quantities. accumulation in the second plurality of accumulation quantities to decrease the execution sum.
In some respects, the absolute value of an accumulation quantity in the first plurality of accumulation quantities equals the absolute value of a corresponding accumulation quantity in the second plurality of accumulation quantities. For example, the same amount of accumulation is attributed to the respective initial positions in the first and second plurality of positions. In some respects, the perpendicular distance from the border line of a position in the first plurality of positions equals the perpendicular distance from the border line of a corresponding position in the second plurality of positions. For example, the respective initial positions in the first and second pluralities of
29/30 positions are equidistant from the boundary line. Referring to the discussion above, Figures 1, 2 and 3a refer to the weighing of positions in relation to the boundary line and the assignment of values to accumulation quantities.
In some respects, decreasing the run sum in Step 516 includes decreasing the run sum if the run sum is greater than a predetermined minimum value.
In some respects, the existing coverage network output when the execution sum is greater than or equal to the final value in Step 520 includes resetting the execution sum to a predetermined initial value after exiting the existing coverage network.
In some ways, the exit from the coverage network in Step 520 includes entering a second coverage network and reconfiguring the wireless device from an existing coverage network operating system processor to a second operating system processor coverage network. In some respects, reconfiguration is performed by transferring the new software to the second system processor. In some ways, reconfiguration is accomplished by switching the new hardware to the second system processor within the wireless device.
A system and method is provided to determine when to leave an existing wireless coverage network. Examples of the invention have been permitted with and without supplementary boundary lines and with a plurality of geographic device positions with respect to a boundary line. However, it should be understood that the present invention is not limited to any particular number of supplementary boundary lines or geographic device positions. 0
30/30 system and method are applicable to a wide range of non-fic communication device configurations, as well as to any other devices that use the distance from a transceiver source or a ratio of distance and energy levels received in a making process decision-making. Other variations and modalities of the present invention will occur by assessing those skilled in the art.
Although the invention is described with reference to 10 particular embodiments, the description is only an example of the application of the invention and should not be taken as a limitation. Consequently, various adaptations and combinations of characteristics of the described modalities are within the scope of the invention as included by the following claims.
Contents11
5 sheets
Sheet 1 Sheet 2 Sheet 3 Sheet 4 Sheet 5
20 members in 11 offices
Priority claims2
| Document | Office | Kind | Date |
|---|---|---|---|
| 64901103 | United States of America | A | |
| 2004027085 | United States of America | W |
Members20
| Document | Office | Kind | |
|---|---|---|---|
| US2005048976A1 | United States of America | A1 | |
| CA2537007A1 | Canada | A1 | |
| WO2005022943A1 | World Intellectual Property Organization (WIPO) | A1 | |
| EP1661429A1 | European Patent Office (EPO) | A1 | |
| US7085571B2 | United States of America | B2 | |
| CN1843051A | China | A | |
| BRPI0413995AThis record | Brazil | A | |
| US2006264211A1 | United States of America | A1 | |
| KR20070019936A | Republic of Korea | A | |
| JP2007503768A | Japan | A | |
| US7302271B2 | United States of America | B2 | |
| EP1661429B1 | European Patent Office (EPO) | B1 | |
| AT387826T | Austria | T | |
| ATE387826T1 | Austria | T1 | |
| DE602004012119D1 | Germany | D1 | |
| ES2300823T3 | Spain | T3 | |
| DE602004012119T2 | Germany | T2 | |
| JP4467080B2 | Japan | B2 | |
| KR101083456B1 | Republic of Korea | B1 | |
| CN1843051B | China | B |
3 legal events, as the office reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | |
|---|---|---|
| Others concerning applications: alteration of classificationB15K | B15K | |
| Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]LapsedREFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2159 DE 22/05/2012.B08K | B08K | |
| Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]REFERENTE A 7A ANUIDADE.B08F | B08F |
Numbers
- Application
- 4139950
Titles2
- English
- system and method for using geographic location to determine when to leave an existing wireless coverage network
- Portuguese
- sistema e método para utilização de localização geográfica para determinar o momento de deixar uma rede de cobertura existente de comunicação sem fio
Classification
- CPC, 5
- H04W36/32
- H04W28/26
- H04W76/30
- H04W36/008375
- H04W64/00
- IPC, 6
- H04L12 28
- H04W28 26
- H04W36 14
- H04W36 32
- H04W64 00
- H04W76 06