Communication system, base station, terminal, and communication method
First Claim
Patent Images
1. A communication system comprising:
- communication control means that allocates one wireless link between one base station and one terminal and that adds, in the one wireless link, communication including, in addition to a first service provided by communication initially performed, a second service differing from the first service, whereinthe first service has a first priority and the second service has a second priority differing from the first priority, whereincommunication is performed in compliance with an OFDMA scheme having traffic channels including first sub-channels including information showing enabled or disabled sub-channels and second sub-channels storing data pertaining to the services in correspondence with the first sub -channels, wherein,when the communication control means adds the communication including, in addition to the first service provided by the initially-performed communication, the second service differing from the first service, the communication control means allocates, in addition to a first sub-channel allocated to the initially-performed communication, another first sub-channel differing from the first sub-channel allocated to the initially-performed communication, wherein the communication control means associates, on the basis of priorities corresponding to the respective services, the priorities with the first sub-channels and allocates the second sub-channels on the basis of the priority.
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Abstract
A multiservice is implemented by connecting one base station and one terminal via one wireless link.
There is provided communication control means 2-1 that performs communication in compliance with an OFDMA scheme having traffic channels including first sub-channels for containing information showing enabled or disabled sub-channels and second sub-channels for storing data pertaining to services in correspondence with the first sub-channels, that allocates a plurality of first sub-channels to a plurality of services, respectively, and that connects one base station to one terminal via one wireless link, thereby establishing communication pertaining to the plurality of services.
6 Citations
9 Claims
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1. A communication system comprising:
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communication control means that allocates one wireless link between one base station and one terminal and that adds, in the one wireless link, communication including, in addition to a first service provided by communication initially performed, a second service differing from the first service, wherein the first service has a first priority and the second service has a second priority differing from the first priority, wherein communication is performed in compliance with an OFDMA scheme having traffic channels including first sub-channels including information showing enabled or disabled sub-channels and second sub-channels storing data pertaining to the services in correspondence with the first sub -channels, wherein, when the communication control means adds the communication including, in addition to the first service provided by the initially-performed communication, the second service differing from the first service, the communication control means allocates, in addition to a first sub-channel allocated to the initially-performed communication, another first sub-channel differing from the first sub-channel allocated to the initially-performed communication, wherein the communication control means associates, on the basis of priorities corresponding to the respective services, the priorities with the first sub-channels and allocates the second sub-channels on the basis of the priority. - View Dependent Claims (8)
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2. A base station that performs communication with a single wireless terminal in compliance with an OFDMA scheme having traffic channels including first sub-channels including information showing enabled or disabled sub-channels and second sub-channels storing data pertaining to communication services in correspondence with the first sub-channels, wherein,
when the communication control means adds communication including, in addition to a first service provided by initially-performed communication, a second service differing from the first service, the communication control means allocates, in addition to a first sub-channel allocated to the initially-performed communication, another first sub-channel differing from the first sub-channel allocated to the initially-performed communication, and wherein the first service has a first priority and the second service has a second priority differing from the first priority, wherein the communication control means associates, on the basis of priorities corresponding to the respective services, the priorities with the first sub-channels, and allocates second sub-channels in numbers appropriate for the priority.
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3. A terminal that performs communication in compliance with an OFDMA scheme having traffic channels including first sub-channels including information showing enabled or disabled sub-channels and second sub-channels storing data pertaining to communication services in correspondence with the first sub-channels, wherein,
when the communication control means adds communication including, in addition to a first service provided by initially-performed communication, a second service differing from the first service, the communication control means allocates, in addition to a first sub-channel allocated to the initially-performed communication, another first sub-channel differing from the first sub-channel allocated to the initially-performed communication, and wherein the first service has a first priority and the second service has a second priority differing from the first priority, wherein the communication control means associates, on the basis of priorities corresponding to the respective services, the priorities with the first sub-channels and allocates the second sub-channels on the basis of the priority.
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5. A communication method for performing communication between a base station and a terminal over a single wireless link in compliance with an OFDMA scheme having traffic channels including first sub-channels including information showing enabled or disabled sub-channels and second sub-channels storing data pertaining to communication services in correspondence with the first sub-channels, the method comprising:
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allocating and adding, by the base station, a first sub-channel for each additional service for which a terminal has requested establishment and notifies the terminal of each first sub-channel; transmitting a service addition acknowledgment from the base station to the terminal; requesting, by the terminal that received the service addition acknowledgment requests, a communication band for the additional service to the base station; and allocating, by the base station that received the request for the communication band, to the terminal the second sub-channels in numbers appropriate for the communication band of the additional service on the basis of a priority corresponding to the additional service.
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6. An OFDMA communication system, comprising
a base station; -
a terminal; and a communication controller that is configured to; allocate a wireless link between the base station and the terminal; allocate, for a first service, a first anchor sub-channel and first plural numbers of first extra sub-channels identified by the first anchor sub-channel, wherein the first anchor sub-channel includes information showing enabled or disabled sub-channels; allocate, for a second service, a second anchor sub-channel and second plural numbers of second extra sub-channels identified by the second anchor sub-channel, wherein the second anchor sub-channels store data pertaining to the services in correspondence with the first anchor sub-channels; and add communication for the second service via the wireless link using the second anchor sub-channel and the second extra sub-channels during communication for the first service via the wireless link using the first anchor sub-channel and the first extra sub-channels, wherein the first and second extra sub-channels are allocated based on priorities corresponding to the respective services associated with those sub-channels. - View Dependent Claims (7)
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Specification