Communication method, apparatus and system for multiple access points

A communication system, comprising a primary sending terminal, at least one secondary sending terminal sharing a channel with the primary sending terminal and at least one receiving terminal, wherein,

• the primary sending terminal is configured to:
• send data corresponding to the at least one receiving terminal to the at least one receiving terminal;
• send a block acknowledgement request (BAR) corresponding to the data to the at least one receiving terminal;
• receive a block acknowledgement (BA) corresponding to the BAR, which is sent by the at least one receiving terminal;
• and
• clear the data cached in the primary sending terminal, when the BA indicates that the data is correctly received by the at least one receiving terminal;
• the secondary sending terminal is configured to:
• send the data to the at least one receiving terminal with the primary sending terminal simultaneously through a shared channel;
• obtain the BA sent by the receiving terminal through the shared channel;
• and
• clear the data cached in the secondary sending terminal, when the BA indicates that the data is correctly received by the receiving terminal;
• and
• the receiving terminal is configured to:
• receive the data sent by the primary sending terminal and the secondary sending terminal;
• receive the BAR corresponding to the data, which is sent by the primary sending terminal;
• and
• send the BA corresponding to the BAR to the primary sending terminal,
• wherein,
• the primary sending terminal is specifically configured to:
• obtain a first indication according to the BA, wherein the first indication is used for indicating the data correctly received by the at least one receiving terminal, which is obtained by the primary sending terminal;
• and
• clear, according to the first indication, the data corresponding to the first indication, which is cached in the primary sending terminal,
• wherein, the secondary sending terminal is further configured to receive, before clearing correctly received data cached in the secondary sending terminal according to the BA, the first indication sent by the primary sending terminal,
• wherein, the secondary sending terminal is specifically configured to:
• obtain a second indication according to the BA, wherein the second indication is used for indicating the data correctly received by the at least one receiving terminal, which is obtained by the secondary sending terminal;
• calculate a union set of the data indicated by the first indication and the data indicated by the second indication;
• and
• clear, according to a result of the union set calculation, data corresponding to the result, which is cached in the secondary sending terminal,
• wherein the primary sending terminal and the at least one secondary sending terminal share the data sent to the at least one receiving terminal and channel information necessary for sending the data.

A sending apparatus, applied to a wireless communication system which obtains a channel based on a way of competition, the communication system comprising a primary sending terminal, at least one sending apparatus sharing a channel with the primary sending terminal and at least one receiving terminal, wherein the sending apparatus comprises:

• a non-transitory computer readable storage medium;
• a transceiver;
• and
• a processor;
• wherein the non-transitory computer readable storage medium comprises computer executable instructions, and when the instructions are executed:
• the transceiver is configured to send data to the at least one receiving terminal through a shared channel, wherein the data is sent from the primary sending terminal to the receiving terminal through the shared channel simultaneously;
• retransmit, when the at least one receiving terminal does not correctly receive the data, data which is not correctly received with the primary sending terminal simultaneously through the shared channel;
• the processor is configured to cache the data in a storage;
• obtain a block acknowledgement (BA) sent by the at least one receiving terminal through a shared channel, wherein the BA is sent in response to a block acknowledgement request (BAR) sent by the primary sending terminal;
• and
• clear, if the BA indicates that the data is correctly received by the at least one receiving terminal, the data cached in the storage,
• wherein the transceiver is further configured to receive, before the processor clears the correctly received data cached in the storage, a first indication sent by the primary sending terminal, wherein the first indication is used for indicating the data correctly received by the at least one receiving terminal, which is obtained by the primary sending terminal,
• wherein, the transceiver is further configured to obtain a second indication according to the BA, wherein the second indication is used for indicating data correctly received by the at least one receiving terminal, which is obtained by the sending apparatus;
• and
• the processor is specifically configured to calculate a union set of the data indicated by the first indication and the data indicated by the second indication, and clear, according to a result of the union set calculation, data corresponding to the result, which is cached in the storage,
• wherein the primary sending terminal and the at least one sending apparatus share the data sent to the at least one receiving terminal and channel information necessary for sending the data.

A communication method, applied to a wireless communication system which obtains a channel based on a way of competition, the communication system comprising a primary sending terminal, at least one secondary sending terminal sharing a channel with the primary sending terminal and at least one receiving terminal, wherein the method comprises:

• sending, by the secondary sending terminal, data to the at least one receiving terminal through a shared channel, wherein the data is sent from the primary sending terminal to the receiving terminal through the shared channel simultaneously;
• obtaining, by the secondary sending terminal, a block acknowledgement (BA) sent by the at least one receiving terminal through the shared channel, wherein the BA is sent in response to a block acknowledgement request (BAR) sent by the primary sending terminal;
• and
• if the BA indicates that the data is correctly received by the at least one receiving terminal, clearing, by the secondary sending terminal, the data cached in the secondary sending terminal,
• wherein before the clearing, by the secondary sending terminal, the data cached in the secondary sending terminal, the method further comprises:
• receiving, by the secondary sending terminal, a first indication sent by the primary sending terminal, wherein the first indication is used for indicating the data correctly received by the at least one receiving terminal, which is obtained by the primary sending terminal,
• wherein the clearing, by the secondary sending terminal, the data cached in the secondary sending terminal specifically comprises:
• obtaining, by the secondary sending terminal, a second indication according to the BA, wherein the second indication is used for indicating data correctly received by the at least one receiving terminal, which is obtained by the sending apparatus;
• calculating, by the secondary sending terminal, a union set of the data indicated by the first indication and the data indicated by the second indication;
• and
• clearing, by the secondary sending terminal according to a result of the union set calculation, the data corresponding to the result, which is cached in the secondary sending terminal,
• wherein the primary sending terminal and the at least one secondary sending terminal share the data sent to the at least one receiving terminal and channel information necessary for sending the data.