WO2017193736A1

WO2017193736A1 - Communication method and device

Info

Publication number: WO2017193736A1
Application number: PCT/CN2017/079599
Authority: WO
Inventors: 倪锐
Original assignee: 华为技术有限公司
Priority date: 2016-05-11
Filing date: 2017-04-06
Publication date: 2017-11-16
Also published as: CN107371118A; CN107371118B

Abstract

A communication method and device, used to improve utilization efficiency of radio channels. The method comprises: a first terminal sends, when desiring to send to a base station first data, to the base station a channel request frame carrying a first duration of channel occupation requested by the first terminal, wherein the first duration is greater than a duration required by the first terminal to send the first data, and delay sensitivity for the first data is greater than a predetermined threshold; the first terminal receives a channel response frame returned by the base station for the channel request frame; the first terminal aggregates the first data and second data to generate aggregated data, wherein the second data is sent by at least one second terminal to the first terminal; and the first terminal sends to the base station the aggregated data.

Description

Communication method and device

The present application claims priority to Chinese Patent Application No. PCT Application No. No. No. No. No. No. No. No. No.

Technical field

The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.

Background technique

With the widespread use of the Internet of Things (English: Internet of Things, IoT), Machine Type Communication (MTC), smart city and vertical integration industry, "Low Power Giant Connection" becomes the next generation. One of the key application scenarios of mobile communication networks, the so-called "low-power giant connection" is a huge amount of low-power terminal application wireless channel. At present, cellular mobile communication networks that have already served billions of human mobile phone users need to add more than tens of billions of MTC devices.

In the application scenario where a large number of low-power giant terminal application wireless channels are used, if a large number of terminals use a competitive wireless channel to communicate, the use of the wireless channel may be inefficient due to the excessive number of terminals, and the best use may be performed. The communication capability greatly reduces the system throughput of the wireless channel, reduces the use efficiency of the wireless channel, and reduces the probability that the terminal obtains system services.

Summary of the invention

The embodiment of the present invention provides a communication method and device, which are used to solve the problem that the channel usage efficiency is low in an application scenario in which a large number of low-power terminals access the wireless channel.

The specific technical solutions provided by the embodiments of the present application are as follows:

The first aspect provides a communication method, including: when a first terminal sends a first data to a base station, sending, by the first terminal, a channel request frame to the base station, where the channel request frame carries the first terminal requesting an occupied channel a first time length, the first time length is greater than a length of time required by the first terminal to send the first data, and the first data is sensitive to a delay greater than a preset threshold; the first terminal Receiving, by the base station, a channel response frame returned by the channel request frame; the first terminal aggregates the first data and the second data to generate aggregated data, where the second data is at least one second terminal The first terminal sends the aggregated data to the base station.

In this scenario, in a scenario where the number of terminals is large, the terminal sends a channel request frame to the base station only when data with a sensitivity greater than the preset threshold is generated, thereby reducing the number of terminals directly communicating with the base station, and improving the number of terminals. Channel usage efficiency; further, the length of time required by the terminal to occupy the channel is greater than the length of time actually required by the user to transmit data, so that the terminal can use the requested extra time to receive data sent by other terminals, which makes more The terminal can transmit data to the base station in an indirect manner, which increases the number of terminals that obtain services in the system to a certain extent, further improves the use efficiency of the wireless channel, and effectively reduces the power consumption of the terminal.

With reference to the first aspect, in a first possible implementation manner of the first aspect, before the first terminal sends the channel request frame to the base station, receiving, by the first terminal, packet information sent by the base station, where the group information is And including an identifier ID of the group in which the first terminal is located and an ID of each terminal in the group; the at least one second terminal is located in the same group as the first terminal.

With the first possible implementation of the first aspect, in a second possible implementation manner of the first aspect, before the receiving, by the first terminal, the packet information sent by the base station, the first terminal further includes: receiving, by the first terminal, Broadcast information sent by the base station, and sending registration information to the base station, where the broadcast information includes a first frequency band, and part or all of the first frequency band is used between the first terminal and the base station Performing communication; the registration information is used by the terminal to perform registration of the network slice; the first terminal adjusts a filter configuration of the radio frequency antenna according to the first frequency band, so that the first terminal sends and receives the first frequency band The data.

In this way, according to the specified first frequency band dedicated to communication between the terminal and the base station, the filter configuration of the radio frequency antenna is adjusted, so that the terminal only transmits and receives data of the first frequency band, ignoring data of other frequency bands, thereby ensuring that the terminal and other different types are The terminals do not interfere with each other during the communication process.

With reference to the first aspect, and any one of the first to the second possible implementation manners of the first aspect, in a third possible implementation manner of the first aspect, the channel response frame carries the second time The length of the second time is a length of time that the base station allows the first terminal to occupy a channel.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the channel request frame further carries a first sending policy, where the first sending policy is a specified a sequence in which the first terminal sends data, or a sequence in which the other terminal in the group in which the first terminal is located sends data to the first terminal, or the other terminal in the group in which the first terminal is located The power transmission time when a terminal sends data, or the time period occupied by other terminals of the group in which the first terminal is located to send data to the first terminal, or to other terminals of the group in which the first terminal is located The amount of data when a terminal sends data, or it may be a combination of any of the above.

This improves the success rate of sending D2D data to other terminals in the same group of the first terminal to the first terminal.

In conjunction with the third or fourth possible implementation of the first aspect, in a fifth possible implementation manner of the first aspect, the first terminal aggregates the first data and the second data to generate aggregate data And sending the aggregated data to the base station, where: the first terminal maintains a silent state within a third time period after receiving the channel response frame, where the silent state is used to indicate the first terminal Not transmitting data to the base station; if the first terminal receives the second data sent by the at least one second terminal within the third time length, the second data is compared with the first The data aggregation generates aggregated data, and sends the aggregated data to the base station within a fourth time length after the third time length; the sum of the third time length and the fourth time length is less than Equal to the second length of time.

In conjunction with the fifth possible implementation of the first aspect, in a sixth possible implementation manner of the first aspect, the method further includes: if the first terminal determines that the time for sending the aggregated data is greater than the fourth The length of time, the first data is preferentially sent in the fourth time length; and the second data is stored locally, and the second data is expired according to the data validity period carried by the second data. The second data is deleted.

With reference to the first aspect, and any one of the first to the sixth possible implementation manners of the first aspect, in a seventh possible implementation manner of the first aspect, When the sensitivity of the data to the delay is not greater than the preset threshold, the first data is sent to the third terminal according to the packet information sent by the received base station, and the third terminal is located in the same one as the first terminal. s.

With reference to the seventh possible implementation of the first aspect, in an eighth possible implementation manner of the foregoing aspect, before the first terminal sends the first data to the third terminal, the method further includes:

The first terminal intercepts the first indication message sent by the base station; the first indication message carries a fifth time length that the base station allows the third terminal to occupy a channel, and is used to indicate the first The terminal receives the first The channel is not allowed to occupy the channel to send data to the base station within the fifth time period after the indication message.

In conjunction with the eighth possible implementation of the first aspect, in a ninth possible implementation manner of the first aspect, the first indication message further includes a sixth time length, configured to indicate that the first terminal is receiving Transmitting the first data to the third terminal within the sixth time length after the first indication message; the sixth time length is less than the fifth time length.

With reference to the eighth possible implementation manner of the first aspect, in a tenth possible implementation manner of the first aspect, the first terminal, before receiving the first indication message sent by the base station, a second indication message sent by the third terminal, where the second indication message carries a seventh time length for the third terminal to wait for the other terminals in the group to send data; the first terminal sends the first data And the first terminal sends the first data to the third terminal within the seventh time length after receiving the first indication message.

With reference to the tenth possible implementation manner of the first aspect, in the eleventh possible implementation manner of the first aspect, the seventh time length of the first terminal after receiving the first indication message Transmitting the first data to the third terminal, including: the first terminal, according to the second indication message, after receiving the first indication message, according to the second indication message Transmitting, by the second sending policy, the first data to the third terminal; the second sending policy includes: a terminal that specifies to send data to the third terminal, or a group where the third terminal is located Any one of the sequence, the transmission power, the occupied time period, and the data amount size when the other terminal transmits data to the third terminal.

With reference to the first aspect, and any one of the seventh to the eleventh possible implementation manners of the first aspect, in the twelfth possible implementation manner of the first aspect, the method further includes: if the base station sends the packet The information includes the polling information of each terminal in the group, and the first terminal sends data to the third terminal according to the polling information, where the polling information is used to indicate the first terminal and other a sequence in which the terminal sends data to the third terminal; if the packet information does not include polling information of each terminal in the group, the first terminal uses a manner of competing with other terminals in the group to the third The terminal sends data.

In conjunction with the first aspect and any one of the first to twelfth possible implementations of the first aspect, in a thirteenth possible implementation of the first aspect, the first terminal is a machine type Communication MTC device.

In a second aspect, a communication method is provided, including: a base station groups M terminals, and sends packet information to the M terminals respectively, M≥1, M is a positive integer; the base station receives the a channel request frame sent by the first terminal of the M terminals, the channel response frame is returned to the first terminal, where the channel request frame carries the first time length of the first terminal requesting to occupy the channel, where The first time length is greater than the length of time required for the first terminal to send the first data; the base station receives the aggregated data that the first terminal occupies the channel, and processes the aggregated data; The aggregated data is aggregated by the first data and the second data, where the first data is data that the first terminal wants to send to the base station, and the second data is that at least one second terminal wants to The data sent by the base station, the at least one second terminal being located in the same group as the first terminal.

In this way, in a scenario where the number of terminals is large, the number of terminals directly communicating with the base station can be reduced, and the channel use efficiency is improved. Moreover, by transmitting D2D data, more terminals can transmit data to the base station in an indirect manner, which increases the number of terminals that obtain services in the system to a certain extent, further improves the use efficiency of the wireless channel, and effectively reduces the efficiency. The power consumption of the terminal.

With reference to the second aspect, in a first possible implementation manner of the second aspect, before the base station groups the M terminals, the method further includes: the base station sending broadcast information, and receiving each of the M terminals Note sent by a terminal The broadcast information includes information of a first frequency band, and part or all of the first frequency band is used for communication between the M terminals and the base station; the registration information is used by the terminal to perform The registration of the network slice.

By indicating to the terminal a specified first frequency band that is specifically used for communication between the terminal and the base station, the terminal only transmits and receives data of the first frequency band, and ignores data of other frequency bands, so as to ensure that the terminal and other different types of terminals do not communicate with each other in the communication process. interference.

With reference to the second aspect, or the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the performing, by the base station, the M terminals, The theoretical quantity value of the terminal of the random contending wireless channel whose throughput reaches the maximum value determines the number of the packets; the base station according to the determined number of the packets, and according to the physical location, service type, and saving of the M terminals The M terminals are grouped by at least one of a required degree of power consumption.

By determining the number of packets, the number of direct communication with the base station is kept at an optimum number, that is, the system throughput can be made close to or equal to the maximum value, improving the channel usage efficiency.

With reference to the second aspect, and any one of the first to the second possible implementation manners of the second aspect, in a third possible implementation manner of the second aspect, the group information includes: an identifier ID of the group And the ID of each terminal in the group.

With reference to the third possible implementation of the second aspect, in a fourth possible implementation manner of the second aspect, the packet information further includes polling information of each terminal in the group, where the polling information is used to indicate The order in which the terminal that has not transmitted the channel request frame transmits data to the terminal that transmits the channel request frame.

With reference to the third or fourth possible implementation of the second aspect, in a fifth possible implementation manner of the second aspect, the packet information further includes information for the second frequency band and information of the third frequency band. The second frequency band is used by the first terminal to communicate with the base station, and the second frequency band is included in the first frequency band, where the third frequency band is used between the first terminal and another terminal. Communication.

With reference to the second aspect, and any one of the first to fifth possible implementation manners of the second aspect, in a sixth possible implementation manner of the second aspect, the channel response frame carries the second time The length of the second time is a length of time that the base station allows the first terminal to occupy a channel.

With reference to the sixth possible implementation of the second aspect, in a seventh possible implementation manner of the second aspect, the channel response frame is further used to indicate that, in addition to the first terminal, The other terminal does not allow the channel to transmit data to the base station within the second time length from the time when the channel response frame is received.

In a third aspect, there is provided a communication apparatus having the function of implementing the behavior of the first terminal in the design of any one of the first to the thirteenth possible implementations of the first aspect and the first aspect. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In the following, in conjunction with the third aspect, portions of the various possible implementations of the third aspect are specifically described.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the communications apparatus is applied to the first terminal, including: a transceiver, a processor, and a memory, where the memory is configured to store a set of instructions, The processor is configured to invoke an instruction stored in the memory to perform the following operations:

When the first data is to be sent to the base station, the transceiver sends a channel request frame to the base station, where the channel request frame carries a first time length of the device requesting to occupy the channel, where the first time length is greater than The length of time required by the transceiver to send the first data, the first data is more sensitive to delay than the preset threshold; and the transceiver receives the channel returned by the base station for the channel request frame Response frame; the first data and the second The data aggregation generates aggregated data, and the second data is sent by the at least one second terminal to the device; and the aggregated data is sent to the base station.

In conjunction with the first possible implementation of the third aspect, in a second possible implementation of the third aspect, the processor is configured to: before sending the channel request frame to the base station by using the transceiver Receiving, by the transceiver, broadcast information sent by the base station, where the broadcast information includes a first frequency band, and part or all of the first frequency band is used for communication between the device and the base station; The first frequency band included in the broadcast information adjusts a filter configuration of the radio frequency antenna, so that the transceiver transmits and receives data of the first frequency band; and receives, by the transceiver, packet information sent by the base station, where the packet The information includes an identification ID of the group in which the device is located and an ID of each terminal in the group; the at least one second terminal is located in the same group as the device.

In conjunction with the first or second possible implementation of the third aspect, in a third possible implementation manner of the third aspect, the channel response frame carries a second time length and a first sending policy; The second time length is a length of time that the base station allows the device to occupy a channel; the first sending policy is a terminal that specifies to send data to the device, or is at least two other terminals of the group in which the device is located. The sequence in which the device transmits data. This improves the success rate of sending D2D data to other terminals in the same group of the first terminal to the first terminal.

In conjunction with the third possible implementation of the third aspect, in a fourth possible implementation manner of the third aspect, the processor is configured to: after a third time after the transceiver receives the channel response frame Not transmitting data to the base station within the length; if the second data sent by the at least one second terminal is received by the transceiver within the third time length, the second data is Generating, by the first data, the aggregated data, and transmitting, by the transceiver, the aggregated data to the base station within a fourth time length after the third time length; the third time length and The sum of the fourth time lengths is less than or equal to the second time length.

In conjunction with the fourth possible implementation of the third aspect, in a fifth possible implementation manner of the third aspect, the processor is further configured to: if it is determined that the time for sending the aggregated data is greater than the fourth The length of time, the first data in the aggregated data is preferentially sent within the fourth time length.

In a fourth aspect, a communication apparatus is provided, the apparatus having a function of implementing base station behavior in a method design of any one of the first to seventh possible implementations of the second aspect and the second aspect. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In the following, in conjunction with the fourth aspect, portions of the various possible implementations of the fourth aspect are specifically described.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the communications apparatus is applied to a base station, and specifically includes a transceiver, a processor, and a memory, where the memory is used to store a set of instructions, and the processor uses Invoking an instruction stored in the memory, performing the following operation: receiving the first terminal of the M terminals through the transceiver When the channel request frame is sent, the channel response frame is returned to the first terminal, where the channel request frame carries a first time length of the first terminal requesting to occupy the channel, where the first time length is greater than the The length of time required for the first terminal to send the first data, M≥1, M is a positive integer; receiving, by the transceiver, the aggregate data that the first terminal occupies the channel, and performing the aggregated data Processing, wherein the aggregated data is aggregated by the first data and the second data, the first data is data that the first terminal wants to send to the device, and the second data is at least one second The data that the terminal wants to send to the device.

In conjunction with the first possible implementation of the fourth aspect, in a second possible implementation manner of the fourth aspect, the processor is further configured to: receive, by the transceiver, the first one of the M terminals Before transmitting a channel request frame by a terminal, transmitting broadcast information, and receiving registration information sent by each of the M terminals, and grouping the M terminals, and transmitting the group information to the M terminals; wherein the broadcast information includes information of a first frequency band, the first frequency band is used for communication between the M terminals and the device; and the registration information is used by the terminal to perform the first Registration of the frequency band.

In conjunction with the first or second possible implementation of the fourth aspect, in a third possible implementation of the fourth aspect, the processor is configured to: according to a random competitive wireless device capable of maximizing system throughput a theoretical number of terminals of the channel, determining a number of packets; according to the determined number of the packets, and according to at least one of a physical location of the M terminals, a service type, and a required degree of power saving, The M terminals perform grouping.

With reference to the third possible implementation manner of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the packet information includes polling information of each terminal in the group, and the polling information is used to indicate that The sequence in which the terminal transmitting the channel request frame transmits data to the terminal transmitting the channel request frame.

With reference to the fourth aspect, and any one of the first to fourth possible implementation manners of the fourth aspect, in a fifth possible implementation manner of the fourth aspect, the channel response frame carries the second time The length of the second time is the length of time that the device allows the first terminal to occupy the channel, and the channel response frame is further used to indicate other terminals of the M terminals other than the first terminal. And starting from the moment when the channel response frame is received, within the second time length, the channel is not allowed to transmit data to the device.

In a fifth aspect, a communication apparatus is provided, the apparatus having a function of implementing the behavior of the first terminal in the method design of any one of the first to the thirteenth possible implementations of the first aspect and the first aspect. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In the following, in conjunction with the fifth aspect, portions of the various possible implementations of the fifth aspect are specifically described.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the communications device is applied to the first terminal, and includes: a sending unit, configured to send, to the base station, when the first data is to be sent to the base station a channel request frame, where the channel request frame carries a first time length of the first terminal requesting the occupied channel, where the first time length is greater than a length of time required by the first terminal to send the first data, The first data is more sensitive to delay than the preset threshold value;

a receiving unit, configured to receive a channel response frame returned by the base station for the channel request frame;

An aggregation unit, configured to aggregate the first data and the second data to generate aggregate data, where the second data is sent by the at least one second terminal to the first terminal;

And a sending unit, configured to send the aggregated data to the base station.

With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the receiving unit is further configured to: receive broadcast information sent by the base station, where the broadcast information includes a frequency band, part or all of the first frequency band is used for communication between the first terminal and the base station;

The device further includes a configuration unit, configured to adjust a filter configuration of the radio frequency antenna according to the first frequency band included in the broadcast information, so that the first terminal transmits and receives data of the first frequency band;

The receiving unit is further configured to receive, by the base station, packet information, where the packet information includes an identifier ID of a group in which the first terminal is located, and an ID of each terminal in the group; the at least one second terminal and the The first terminals are located in the same group.

With reference to the first or second possible implementation manner of the fifth aspect, in a third possible implementation manner of the fifth aspect, the channel response frame carries a second time length and a first sending policy; The second time length is a length of time that the base station allows the first terminal to occupy a channel; the first sending policy is a terminal that specifies to send data to the first terminal, or is a group where the first terminal is located. The sequence in which the other at least two terminals transmit data to the first terminal.

With reference to the third possible implementation manner of the fifth aspect, in a fourth possible implementation manner of the fifth aspect, the aggregating unit is configured to: after the first terminal receives the channel response frame, Not transmitting data to the base station within a three-time length; if the first terminal receives the second data sent by the at least one second terminal within the third time length, the second data is The first data aggregation generates the aggregated data, and sends the aggregated data to the base station within a fourth time length after experiencing the third time length; the third time length and the first The sum of the four time lengths is less than or equal to the second time length.

With reference to the fourth possible implementation manner of the fifth aspect, in a fifth possible implementation manner of the fifth aspect, the aggregating unit is further configured to: if it is determined that the time for sending the aggregated data is greater than the fourth The length of time, the first data in the aggregated data is preferentially sent within the fourth time length.

In a sixth aspect, a communication apparatus is provided, the apparatus having a function of implementing base station behavior in a method design of any one of the first to seventh possible implementations of the second aspect and the second aspect. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In the following, in conjunction with the sixth aspect, portions of the various possible implementations of the sixth aspect are specifically described.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the device is applied to a base station, including:

a receiving unit, configured to receive a channel request frame sent by a first terminal of the M terminals;

a sending unit, configured to: when the receiving unit receives a channel request frame sent by the first terminal of the M terminals, return a channel response frame to the first terminal, where the channel request frame carries the The first time length of the terminal is required to occupy the channel, the first time length is greater than the length of time required by the first terminal to send the first data, M≥1, and M is a positive integer;

The receiving unit is further configured to receive aggregate data that is sent by the first terminal and occupy the channel;

a processing unit, configured to process the aggregated data after receiving, by the receiving unit, the aggregated data sent by the first terminal by using the channel; wherein the aggregated data is aggregated by the first data and the second data The first data is data that the first terminal wants to send to the base station, and the second data is data that at least one second terminal wants to send to the base station.

With reference to the first possible implementation manner of the sixth aspect, in a second possible implementation manner of the sixth aspect, the sending unit is further configured to send broadcast information, and the receiving unit is further configured to receive the M Registration information sent by each terminal in the terminal;

And a packet unit, configured to group the M terminals, and send the group information to the M terminals respectively;

The broadcast information includes information of a first frequency band, where the first frequency band is used for communication between the M terminals and the base station; and the registration information is used by the terminal to perform registration of the first frequency band.

With reference to the first or second possible implementation manner of the sixth aspect, in a third possible implementation manner of the sixth aspect, the grouping unit is configured to perform random competition according to a system throughput The theoretical number of terminals of the wireless channel, determining the number of packets;

The M terminals are grouped according to the determined number of the packets, and according to at least one of a physical location of the M terminals, a service type, and a required degree of power saving.

With reference to the third possible implementation manner of the sixth aspect, in a fourth possible implementation manner of the sixth aspect, the packet information includes polling information of each terminal in the group, and the polling information is used to indicate that The sequence in which the terminal transmitting the channel request frame transmits data to the terminal transmitting the channel request frame.

With reference to any one of the first to fourth possible implementation manners of the sixth aspect, in a fifth possible implementation manner of the sixth aspect, the channel response frame carries a second time length, The second time length is a length of time that the base station allows the first terminal to occupy a channel, and the channel response frame is further used to indicate that other terminals of the M terminals except the first terminal are received from The time at which the channel responds to the frame begins, and within the second length of time, the channel is not allowed to transmit data to the base station.

In the embodiment of the present application, in a scenario where the number of terminals is large, the terminal is only sensitive to delays greater than When the threshold data is preset, the channel request frame is sent to the base station, which reduces the number of terminals that directly communicate with the base station, and improves the channel usage efficiency. Further, the time length required for the terminal to occupy the channel is greater than the actual data sent by the terminal. The length of time required, so that the terminal can use the extra time requested to receive data sent by other terminals, which enables more terminals to send data to the base station in an indirect manner, which increases the system to some extent. The number of terminals that receive the service further improves the use efficiency of the wireless channel and effectively reduces the power consumption of the terminal.

DRAWINGS

1 is a schematic diagram of an existing system architecture;

2 is a schematic structural diagram of a system in an embodiment of the present application;

3 is a flowchart of a communication method in an embodiment of the present application;

4 is a schematic diagram of a network topology in an embodiment of the present application;

FIG. 5 is a schematic diagram of time relationship in a communication method according to an embodiment of the present application; FIG.

6 is a structural diagram of a communication device in an embodiment of the present application;

Figure 7 is a second structural diagram of a communication device in an embodiment of the present application;

Figure 8 is a third structural diagram of a communication device in an embodiment of the present application;

FIG. 9 is a fourth structural diagram of a communication device in an embodiment of the present application.

detailed description

The present invention will be further described in detail with reference to the accompanying drawings, in which FIG. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

The application scenario of the present application is applicable to a scenario in which a terminal device that accesses a wireless channel with a large amount of low power consumption can be applied to the application scenario of the MTC of the cellular mobile communication network. Preferably, the terminal involved in the application may be an MTC device. .

As shown in FIG. 1, a plurality of terminals can communicate with a base station. For convenience of description, only five terminals of terminal A, terminal B, terminal C, terminal D, and terminal E are shown. In practical applications, since the number of terminals is large, if each terminal sends data to the base station, collisions are likely to occur, and the number of terminals that can actually obtain the base station service is small, and the power consumption of the terminal is large.

The system architecture of the method in the embodiment of the present application can be schematically illustrated in FIG. 2 based on the system architecture shown in FIG. As shown in FIG. 2, the system architecture of the embodiment of the present application includes a base station and a terminal, and the terminal uses terminal A, terminal B, and terminal C as an example. The base station is responsible for allocating the uplink air interface resource, and the scheduling result is indicated to the terminal, and the terminal is configured to receive the uplink scheduling indication of the base station, and send the data according to the cache condition.

The terminal B and the terminal C shown in FIG. 2 both transmit data to the terminal A, and the terminal A transmits the aggregated data after the data of the three terminals is aggregated to the base station; the terminal E transmits the data to the terminal D, and the terminal D sends the data to the terminal D. The aggregated data after the data aggregation of the terminals is transmitted to the base station.

The communication method in the embodiment of the present application will be described in detail below with reference to the accompanying drawings. Referring to FIG. 3, the flow of the communication method provided by the embodiment of the present application is as follows.

Step 301: The base station groups the M terminals, where M≥1, and M is a positive integer.

A group contains at least one terminal, that is, one or more terminals.

Step 302: The base station sends corresponding group information to each of the M terminals. Each of the M terminals respectively receives packet information transmitted by the base station.

Step 303: When the first terminal wants to send the first data to the base station, the first terminal sends a channel request frame to the base station, where the first time length of the channel occupied by the first terminal is requested to be requested by the first terminal. The length of time is greater than the length of time required for the first terminal to send the first data, and the sensitivity of the first data to the delay is greater than a preset threshold. The base station receives the channel request frame sent by the first terminal.

Step 304: After receiving the channel request frame sent by the first terminal, the base station returns a channel response frame to the first terminal, where the channel response frame is used to indicate that the first terminal is allowed to occupy the channel.

Step 305: The first terminal receives the channel response frame returned by the base station for the channel request frame, and maintains a silent state within a third time length T3 after receiving the channel response frame.

The silent state is used to indicate that the first terminal does not send data to the base station.

Step 305': If the second terminal determines that the data to be sent to the base station is less sensitive to the delay than the preset threshold, the second terminal sends the data to the first terminal within a time length T3 after receiving the channel response frame.

Step 305 and step 305' are behaviors performed by the first terminal and the second terminal, respectively, during the same time period.

Step 306: The first terminal receives the second data sent by the second terminal within the time length T3, and then aggregates the second data with the first data to generate aggregate data in the fourth time length T4 after the time length T3. And sent to the base station.

Step 307: The base station receives the aggregated data sent by the first terminal, and processes the aggregated data.

The above steps 301-307 are more specifically described.

In the embodiment of the present application, the base station first sends the broadcast information before receiving the M terminals, and receives the registration information sent by each of the M terminals.

The broadcast information includes information of the first frequency band, and part or all of the first frequency band is used for communication between the M terminals and the base station. The base station or the terminal can filter a relatively narrow sub-spectrum (ie, the first frequency band) from a relatively wide radio spectrum through a filter, and is specifically used for communication between the base station and the terminal. In the embodiment of the present application, the first frequency band may also be referred to as a network slice, where the network slice is a type of hardware, software, policy, and spectrum dynamically deployed by the network operator from a service perspective to meet the service quality of a specific user set. combination. The spectrum division involved in the embodiment of the present application is only a link or a part of the network slice.

Take the terminal as an MTC device as an example. The sub-spectrum dedicated to communication of the MTC device is referred to as an MTC slice.

The frame format of the broadcast information can be as shown in Table 1.

Table 1

MTC slice ID

Spectrum position of MTC slices

As shown in Table 1, the broadcast information includes the identification ID of the MTC slice and the spectral position of the MTC slice. The MTC slice is a spectrum dedicated to the MTC device, and the identifier of the MTC slice is used to distinguish the MTC from other communication types, and may be a string or a number. The spectral position of the MTC slice may be the start frequency and the end frequency of the sub-spectrum dedicated to the communication of the MTC device; or may be the center frequency and the bandwidth of the sub-spectrum dedicated for communication of the MTC device; or Other information that can characterize the location of the spectrum.

In the embodiment of the present application, the manner in which the terminal registers a dedicated network slice ensures that the terminal and the different types of terminals do not interfere with each other during the communication process. For example, for the MTC device, the MTC slice dedicated through the above registration The way to ensure that the MTC device communicates with humans (English: Human Type Communication, abbreviation: HTC) devices do not interfere with each other during communication.

The above registration information is used by the terminal to register the network slice.

The terminal is the MTC device as an example. The frame format of the registration information can be as shown in Table 2.

Table 2

MTC device ID

MTC slice ID

MTC device capabilities

MTC device business type

The registration information is used by the MTC device to register the MTC slice. The registration information includes the MTC device ID, the ID of the MTC slice, the capability of the MTC device, and the service type of the MTC device. The capability of the MTC device is used to describe the type of communication protocol that the MTC device can support. The service type of the MTC device is used to describe the sensitivity of the service running by the MTC device to the delay, the size of the data frame sent by the MTC device, and the number of data frames sent per unit time.

Specifically, the foregoing MTC device ID refers to a character string or a number that can be identified by all base stations of the cellular mobile communication network and can identify the present MTC device. For example, the MTC device ID adopts a 48-bit length MAC address; the capability of the above MTC device is It refers to whether the MTC device can support the communication method or communication protocol proposed in the embodiment of the present application. The size of the data frame sent by the MTC device may be the average length of the transmitted data frame. The number of data frames transmitted per unit time may also be described as the number of data frames arriving in a unit time, or may be described as the average time interval of the data frame. .

The channel occupied by the terminal to transmit the registration information may be a channel of the MTC slice spectrum location, or may be another registered dedicated channel indicated by the base station in the broadcast information.

Hereinafter, for convenience of explanation, M terminals may be represented by a first terminal, a second terminal, a third terminal, and the like.

The process of grouping M terminals by the base station will be described below.

1) Determine the number of groups

The base station determines the number of packets based on the theoretical number of terminals of the random contention radio channel capable of maximizing system throughput, or the number of times the historically ranked radio channel competes.

Specifically, the base station decides to divide the M terminals into groups, and an important reference factor is the theoretical number of terminals of the random contending wireless channel that can maximize the system throughput. In theory, when multiple devices compete for the same wireless channel, there is a theoretical balance between the number of terminals that can maximize the system throughput. The number outside the balance point will reduce the system throughput and increase the terminal. The probability of sending a data frame successfully. The base station guarantees that the value of the number of packets N is as close as possible to this theoretical equilibrium point;

Another reference factor is the number of times the historically ranked wireless channel competes. When the number of times the historical statistical radio channel competes more, the base station tends to have more terminals in each group, that is, the number of packets is reduced; when the number of times the historical statistical radio channel competes is small, the base station will It is preferred that the number of terminals included in each group is small, that is, the number of packets is increased.

2) Which terminals are grouped into one group

The base station groups the M terminals according to at least one of the following parameters of the terminal:

Physical location, type of business, and degree of power savings.

The base station divides the terminals whose physical locations are relatively close into one group. The main consideration is that the terminals in the same group consume less power when transmitting D2D data.

The base station groups the terminals with similar service types into one group.

Taking the terminal as an MTC device as an example, a schematic diagram of a network topology is shown in FIG. 4. In FIG. 4, a base station of a cellular mobile communication network is located at the center of the circle, and 20 identical MTC devices are equally spaced at a circumference of the same radius. . Since the radius of the MTC device reaching the center of the circle is the same, the power consumption for uniformly communicating the MTC device with the base station is denoted as P1; and because the distance between the MTC devices is the same, the MTC device and the adjacent another MTC device are uniformly The power consumption for communication is recorded as P2. Let P1 be greater than P2.

In this network topology, the grouping rule that the base station can adopt is that one set of two adjacent MTC devices is formed, for example, one set of the MTC device 1 and the MTC device 2 shown in FIG. 4, and one of the MTC device 3 and the MTC device 4. Group, and so on.

The grouping information described in step 302 includes: an ID of the group and an ID of each terminal in the D2D group. Preferably, the ID of the network slice is also included.

The ID of a group refers to a string or number used by the base station to record a group.

Assuming that the base station divides the first terminal and the second terminal into one group, the frame format of the group information respectively sent by the base station to the first terminal and the second terminal may be as shown in Table 3.

table 3

Network slice ID

Group ID

ID of the first terminal

Second terminal ID

After receiving the packet information, the terminal records the relationship between itself and other terminals in the same group in the protocol module 205 according to the group information. For example, the first terminal uses one entry to record the second terminal in the same group.

In this embodiment of the present application, a threshold is preset for the sensitivity of the data that the terminal wants to send to the base station to the delay. The terminal sends a channel request frame to the base station only when the sensitivity of the data to be sent is greater than the preset threshold, and the same D2D is sent when the sensitivity of the data to be sent is not greater than the preset threshold. Other terminals within the group that have transmitted channel request frames transmit D2D data.

For example, the first terminal sends a channel request frame to the base station when the data to be sent is more sensitive to the delay than the preset threshold.

The format of the channel request frame sent by the first terminal may be as shown in Table 4.

Table 4

The channel request frame carries the ID of the first terminal, the ID of the D2D group where the first terminal is located, and the length of time that the first terminal requests to occupy the channel. It is assumed that the time length of the first terminal requesting to occupy the channel is T1.

The base station calculates, according to the time length T1 carried in the channel request frame, the time length T2 that the base station allows the first terminal to occupy the channel, and returns a channel response frame to the first terminal;

The time length T2 that the base station allows the first terminal to occupy the channel is the length of time that the first terminal requests to occupy the channel is T1 minus the length of time that the base station returns the channel response frame.

The format of the channel response frame returned by the base station to the first terminal is as shown in Table 5.

table 5

Preferably, the base station returns a channel response frame to the first terminal, and other terminals of the M terminals except the first terminal also hear the channel response frame. The channel response frame is further used to indicate other terminals of the M terminals except the first terminal. From the time when the channel response frame is received, within the time length T2, the occupied channel is not allowed to transmit data to the base station. After receiving the channel response frame, the other terminals except the first terminal of the M terminals do not occupy the channel to transmit data to the base station within the time length T2. In this way, during the process in which the first terminal occupies the channel to transmit data to the base station, no conflict occurs due to other terminals transmitting data to the base station.

Here, the type of data sent by the second terminal to the first terminal is the D2D data, which is distinguished from the first data. The data sent by the second terminal to the first terminal is referred to as second data.

Taking the second data as an example, the frame format of the D2D data is as shown in Table 6.

Table 6

Second terminal ID

Data validity period

Data payload

The data validity period refers to how long the data payload is not sent to the base station, and the data payload is the data that the second terminal wants to send to the base station.

If the first terminal cannot send all the aggregated data to the base station in T4, the first data of the own device is preferentially transmitted, and the second data is further stored in the memory 206, waiting for the next transmission opportunity, if in the waiting time If the second data is found to exceed its data validity period, the first terminal deletes the second data in the memory 206.

Taking the aggregated data frame generated by the first data and the second data aggregation as an example, the structure of the aggregated data frame is as shown in Table 7.

Table 7

ID of the first terminal

Data load of the first terminal

Second terminal ID

Data load of the second terminal

The sum of the length of time T3 and the length of time T4 is less than or equal to the length of time T2. Preferably, T3 + T4 = T2-t. t is the time taken by the base station to return the acknowledgment message after receiving the data sent by the first terminal. Generally, the value of t in the actual application is a fixed known duration.

In the embodiment of the present application, the length of the time length T3 and the length of the time T4 are obtained by the first terminal and the second terminal by internal calculation. For example, the first terminal and the second terminal know the values of T2 and t, and T3 and T4 are calculated as: T3: T4 = 1:2, T3 + T4 ≤ T2-t. Since T3 is the time taken by the second terminal to send data to the first terminal, T4 is the time that the first terminal sends the aggregated data to the base station, and it is assumed that the data of the first terminal is separately transmitted and the time of separately transmitting the data of the second terminal is the same. , you can launch T3: T4 = 1:2.

In practical applications, there may be at least two terminals in the same group as the first terminal. According to the same idea, it is assumed that the first terminal is in the group containing L terminals, and if (L-1) terminals are sequentially ordered When a terminal sends data, the total time that the (L-1) terminals send data to the first terminal is T3, and the time taken by each of the (L-1) terminals to send data to the first terminal is 1/1. (2L-1), T4 is L/(2L-1).

After receiving the aggregated data, the base station sends an acknowledgement message to the first terminal. And parsing the data payload of the first terminal and the data payload of the second terminal from the aggregated data.

For convenience of understanding, the time relationship involved in the embodiment of the present application is as shown in FIG. 5. When detecting that the channel is idle, the first terminal sends a channel request frame to the base station, and the time length of the request for occupying the channel is T1, and the base station returns a channel response frame, allowing the time length T2 of the first terminal to occupy the channel to be T1 minus the transmission channel response frame. Time, and inform other terminals to remain silent for the length of time T2 of receiving the channel response frame. The first terminal keeps the silent state within the time length T3 of receiving the channel response frame, that is, does not send data to the base station, and the second terminal sends the channel to the base station within the time length T3 of receiving the channel response frame and delays The data whose sensitivity is not greater than the preset threshold is sent to the first terminal, and the first terminal aggregates the data sent by the second terminal and the data that it wants to send to the base station in the time length T4, and sends the generated aggregated data to the Base station. The time taken by the base station to feed back the confirmation message to the first terminal is t. The sum of time between T3 and T4 is within (T2-t).

The above is the flow of the communication method designed in the embodiment of the present application.

The following is another supplementary description of another scenario in the foregoing method, that is, the number of terminals included in the group in which the first terminal is located is three or more. The following is an example.

For example, the group includes three devices: a first terminal, a second terminal, and a third terminal. In the above-mentioned time length T3, if both the second terminal and the third terminal have D2D data to be transmitted, the following manner may be adopted, but not limited to.

The first mode: the second terminal and the third terminal preempt the opportunity to send D2D data to the first terminal in a random competition manner in T3.

If the second terminal and the third terminal send the D2D data to the first terminal at the same time, causing the first terminal to fail to receive, the second terminal and the third terminal continue to store the D2D data to be sent in the memory 206 thereof. Waiting for the next opportunity to send data directly or indirectly to the base station.

The second mode: the second terminal and the third terminal send the D2D data to the first terminal by using a polling manner.

Preferably, the polling information may be carried in the D2D packet information broadcast by the base station, and the second terminal and the third terminal sequentially try to send data to the first terminal one by one according to the polling information.

One possible expression of the polling information is the numeric string "1, 2, 3", and the first terminal, the second terminal, and the third terminal respectively correspond to 1, 2, 3. It means that the second terminal sends data before the third terminal. The specific operation method is that the second terminal and the third terminal use a short period of time to monitor whether the wireless channel is idle before attempting to send data to the first terminal. The length of time that the second terminal listens is smaller than the length of time that the third terminal listens. Since the second terminal listens for a shorter time, it will first start sending data to the first terminal. After the third terminal hears that the second terminal has started to transmit, it will continue to remain silent until the second terminal transmits. If the second terminal happens to have no data to send to the first terminal, the third terminal naturally sends data to the first terminal after listening for a long period of time.

If the channel request frame sent by the first terminal is not in the group, the role of the polling information may be interpreted as: if the first terminal sends the channel request frame, then in T3, the second terminal takes precedence over the third terminal. The terminal sends data. If the second terminal sends the channel request frame, the third terminal preferentially sends data to the second terminal than the first terminal. If the third terminal transmits the channel request frame, the first terminal preferentially transmits data to the third terminal than the second terminal.

Preferably, the polling information may also notify the second terminal and the third terminal by using a broadcast manner when the first terminal sends the channel request frame. That is, the polling information is carried in the channel request frame.

Preferably, the first terminal may further carry a sending policy in the broadcast channel request frame, where the sending policy is used to notify the second terminal and the third terminal of how to send data to the first terminal, for example, the foregoing first type may be used. Way, or The second way above.

Preferably, the sending policy further includes at least one of the following: a designated terminal that sends data to the first terminal in the group where the first terminal is located; and a sequence in which the other terminals in the group where the first terminal is located send data to the first terminal, Transmit power, time period occupied, and amount of data.

In the communication method described above, the channel through which the terminal communicates with the base station, and the channel (referred to as D2D channel for short) that performs D2D communication between the terminal and the terminal may be the same channel or different channels. If the channel is different, the embodiment of the present application further provides a preferred implementation manner.

For example, the first terminal and the second terminal are included in the group. As shown in Table 8, the base station extends the frame format of the D2D data sent by the first terminal and the second terminal, and adds the information of the second frequency band, the information of the third frequency band, and the maximum power of the data transmitted between the terminal and the terminal. For the D2D maximum power, the second frequency band is used for the terminal to communicate with the base station, and the second frequency band is included in the first frequency band, and the third frequency band is used for the terminal to communicate with the terminal.

Table 8

The base station channel frequency band refers to a wireless channel frequency band in which the terminal communicates with the base station, which necessarily belongs to the frequency band specified by the network slice, and may be all of the network slice frequency band, or may be one of the network slice frequency bands. set. The D2D channel frequency band refers to a wireless channel frequency band of terminal-to-terminal direct communication, which may be all or a subset of the above network slice frequency bands, or may not belong to the above network slice frequency band. The maximum power of D2D refers to the maximum transmit power allowed by the terminal to the terminal to directly transmit data. If the second terminal exceeds the D2D maximum power when transmitting the D2D data to the first terminal, it may cause interference to other D2D communication.

With the above preferred implementation manner, D2D communication, communication between the terminal and the base station can be performed simultaneously, so that the third time length above can be shortened or not, and the first terminal can complete the entire communication by using a shorter second time length. Process; most or all of the second length of time can also be used as the fourth time length. That is to say, other terminals located in the same group as the first terminal can transmit D2D data to the first terminal at any time, and the first terminal can shorten or even no longer need to maintain the silent time for receiving D2D data sent by other terminals, so that The total communication delay from the terminal to the base station is shortened.

It should be noted that the first terminal, the second terminal, and the third terminal are any one of the M terminals, and the foregoing methods applied to the first terminal, the second terminal, and the third terminal may be used by each other, for example, the foregoing application. The communication method at the second terminal can also be applied to the first terminal or the third terminal.

So far, the communication method provided by the embodiment of the present application has been introduced. In the communication method provided by the embodiment of the present application, a device-to-device (English: Device to Device, D2D) direct connection technology and a "first random request and then orderly transmission" technology are combined, and the number of terminals is huge. In the scenario, the number of terminals directly communicating with the base station is reduced, the channel usage efficiency is improved, and the D2D data is sent, so that more terminals can send the data to be sent to the base station in an indirect manner, to a certain extent. The number of terminals that the system obtains is increased, and the power consumption of the terminal is effectively reduced, and the use efficiency of the wireless channel is greatly improved. The D2D data related to the embodiment of the present application refers to data transmitted between the terminal and the terminal.

Based on the same inventive concept, referring to FIG. 6, the embodiment of the present application further provides a communication device 600 having a function of implementing the behavior of the first terminal in the communication method shown in FIG. The function can be passed The hardware implementation can also be implemented by hardware implementation of the corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

Portions of the various possible implementations that communication device 600 can implement are described in detail below.

Optionally, the communication device 600 is applied to the first terminal, and includes: a transceiver 601, a processor 602, and a memory 603. The memory 603 is configured to store a set of instructions, and the processor 602 is configured to invoke an instruction stored in the memory 603 to execute the following. operating:

When the first data is to be sent to the base station, the transceiver sends a channel request frame to the base station, where the channel request frame carries a first time length of the device requesting to occupy the channel, where the first time length is greater than The length of time required by the transceiver to send the first data, the first data is more sensitive to delay than the preset threshold; and the transceiver receives the channel returned by the base station for the channel request frame And responsive to the frame; the first data and the second data are aggregated to generate aggregated data, where the second data is sent by the at least one second terminal to the device; and the aggregated data is sent to the base station.

In this scenario, in a scenario where the number of terminals is large, the terminal sends a channel request frame to the base station only when data with a sensitivity greater than the preset threshold is generated, requesting to occupy the channel, and reducing the number of terminals directly communicating with the base station. To improve the use efficiency of the channel; and to receive the D2D data sent by other terminals by using the requested extra time by the terminal requesting the time length that is larger than the actual time required for the data to be transmitted by the terminal, so that more terminals can pass the data to be transmitted through the indirect The method is sent to the base station, which increases the number of terminals that the system obtains the service to a certain extent, and effectively reduces the power consumption of the terminal, and greatly improves the use efficiency of the wireless channel.

Optionally, the processor 602 is configured to: before transmitting the channel request frame to the base station by using the transceiver 601, receive, by using the transceiver 601, broadcast information that is sent by the base station, where the broadcast information includes a first frequency band, and part or all of the first frequency band is used for Communicating between the communication device 600 and the base station; adjusting the filter configuration of the radio frequency antenna according to the first frequency band included in the broadcast information, so that the transceiver 601 can transmit and receive data of the first frequency band; and receiving, by the transceiver 601, the packet sent by the base station The information includes the identification ID of the group in which the communication device 600 is located and the ID of each terminal in the group; the at least one second terminal is located in the same group as the device.

Optionally, the channel response frame carries a second time length and a first sending policy; the second time length is a length of time that the base station allows the device to occupy the channel; the first sending policy is a terminal that specifies to send data to the device, or is a device. The sequence in which the other at least two terminals of the group send data to the device. This improves the success rate of sending D2D data to other terminals in the same group of the first terminal to the first terminal.

Optionally, the processor 602 is configured to: not send data to the base station after the third time length after the transceiver 601 receives the channel response frame; if the at least one second terminal is received by the transceiver within the third time length Sending the second data, the second data is aggregated with the first data to generate aggregated data, and the aggregated data is sent to the base station by the transceiver 601 within a fourth time length after the third time length; the third time length The sum of the lengths of the fourth time is less than or equal to the second length of time.

Optionally, the processor 602 is further configured to: if it is determined that the time for sending the aggregated data is greater than the fourth time length, the first data in the aggregated data is preferentially sent in the fourth time length.

It should be noted that the connection manner between the parts shown in FIG. 6 is only one possible example. Alternatively, both the transceiver 601 and the memory 603 are connected to the processor 602, and the transceiver 601 and the memory 603 are connected. no connection, Alternatively, there may be other possible connections.

The processor 602 can be a central processing unit (English: central processing unit, abbreviated: CPU), a network processor (English: network processor, abbreviated: NP) or a combination of a CPU and an NP.

Processor 602 can also further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (abbreviated as PLD), or a combination thereof. The above PLD can be a complex programmable logic device (English: complex programmable logic device, abbreviation: CPLD), field-programmable gate array (English: field-programmable gate array, abbreviation: FPGA), general array logic (English: generic array Logic, abbreviation: GAL) or any combination thereof.

The memory 603 may include a volatile memory (English: volatile memory), such as a random access memory (English: random-access memory, abbreviation: RAM); the memory 603 may also include a non-volatile memory (English: non-volatile memory) For example, flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviated: HDD) or solid state drive (English: solid-state drive, abbreviation: SSD); the memory 603 may also include the above types of memory The combination.

Based on the same inventive concept, referring to FIG. 7, the embodiment of the present application further provides another communication device 700, which has the function of implementing the behavior of the base station in the communication method shown in FIG. The functions can be implemented in hardware or in hardware by executing the corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

Portions of the various possible implementations that the communication device 700 can implement are described in detail below.

Optionally, the communication device 700 is applied to a base station, and specifically includes a transceiver 701, a processor 702, and a memory 703. The memory 703 is configured to store a set of instructions, and the processor 702 is configured to invoke an instruction stored in the memory 703 to perform the following operations. When the channel request frame sent by the first terminal of the M terminals is received by the transceiver 701, the channel response frame is returned to the first terminal, where the channel request frame carries the first time length of the first terminal requesting to occupy the channel. The first time length is greater than the length of time required for the first terminal to send the first data, M≥1, and M is a positive integer; the transceiver 701 receives the aggregated data sent by the first terminal occupying the channel, and processes the aggregated data; The aggregated data is a combination of the first data and the second data. The first data is data that the first terminal wants to send to the device, and the second data is data that the at least one second terminal wants to send to the device.

In this way, in a scenario where the number of terminals is large, the number of terminals directly communicating with the base station is reduced, the channel usage efficiency is improved, and the manner in which the D2D data is transmitted enables more terminals to transmit the data to be transmitted in an indirect manner. To the base station, the number of terminals that the system obtains services is increased to a certain extent, and the power consumption of the terminal is effectively reduced, and the use efficiency of the wireless channel is greatly improved.

Optionally, the processor 702 is further configured to: before the transceiver 701 receives the channel request frame sent by the first terminal of the M terminals, send the broadcast information, and receive the registration information sent by each of the M terminals. And, the M terminals are grouped, and the group information is separately sent to the M terminals; wherein the broadcast information includes information of the first frequency band, and the first frequency band is used for communication between the M terminals and the device; Registration of the first frequency band is performed at the terminal.

Optionally, the processor 702 is configured to determine, according to a theoretical quantity value of the terminal of the random contention radio channel that can maximize the system throughput, according to the determined number of packets, and according to the M terminals. Object The M terminals are grouped by at least one of a location, a service type, and a power consumption requirement level.

Optionally, the group information includes polling information of each terminal in the group; the polling information is used to indicate a sequence in which the terminal that does not send the channel request frame sends data to the terminal that sends the channel request frame.

Optionally, the channel response frame carries a second time length, where the second time length is a length of time that the device allows the first terminal to occupy the channel, and the channel response frame is further used to indicate other terminals of the M terminals except the first terminal. From the time when the channel response frame is received, the occupied channel is not allowed to transmit data to the device for the second time length.

It should be noted that the connection manner between the parts shown in FIG. 7 is only one possible example. Alternatively, both the transceiver 701 and the memory 703 are connected to the processor 702, and the transceiver 701 and the memory 703 are connected. There is no connection, or it can be other possible connections.

The processor 702 can be a central processing unit (English: central processing unit, abbreviated: CPU), a network processor (English: network processor, abbreviated: NP) or a combination of a CPU and an NP.

Processor 702 can also further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (abbreviated as PLD), or a combination thereof. The above PLD can be a complex programmable logic device (English: complex programmable logic device, abbreviation: CPLD), field-programmable gate array (English: field-programmable gate array, abbreviation: FPGA), general array logic (English: generic array Logic, abbreviation: GAL) or any combination thereof.

The memory 703 may include a volatile memory (English: volatile memory), such as a random access memory (English: random-access memory, abbreviation: RAM); the memory 703 may also include a non-volatile memory (English: non-volatile memory) For example, flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviated: HDD) or solid state drive (English: solid-state drive, abbreviation: SSD); the memory 703 may also include the above types of memory The combination.

Based on the same inventive concept, referring to FIG. 8 , an embodiment of the present application further provides another communication device 800 having a function of implementing the behavior of the first terminal in the communication method shown in FIG. 3 . The functions can be implemented in hardware or in hardware by executing the corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

Portions of the various possible implementations that the communication device 800 can implement are described in detail below.

Optionally, the communication device 800 is applied to the first terminal, and includes a sending unit 801, a receiving unit 802, and an aggregating unit 803.

The sending unit 801 is configured to send a channel request frame to the base station when the first data is to be sent to the base station, where the channel request frame carries the first time length of the first terminal requesting the occupied channel, where the first time length is greater than the first terminal sending The length of time required for a data, the sensitivity of the first data to the delay is greater than a preset threshold;

The receiving unit 802 is configured to receive a channel response frame returned by the base station for the channel request frame.

The aggregating unit 803 is configured to aggregate the first data and the second data to generate the aggregated data, where the second data is sent by the at least one second terminal to the first terminal.

The sending unit 801 is further configured to send the aggregated data to the base station.

In this scenario, in a scenario where the number of terminals is large, the terminal sends a channel request frame to the base station only when data with a sensitivity greater than the preset threshold is generated, requesting to occupy the channel, and reducing the number of terminals directly communicating with the base station. And improving the use efficiency of the channel; and receiving the D2D data sent by other terminals by using the requested excess time by the terminal requesting the time length that is larger than the actual time required for the data to be sent by the terminal, so that more terminals can pass the data to be sent. The indirect method is sent to the base station, which increases the number of terminals that the system obtains services to a certain extent, and effectively reduces the power consumption of the terminal, and greatly improves the use efficiency of the wireless channel.

Optionally, the receiving unit 802 is further configured to: receive broadcast information sent by the base station, where the broadcast information includes a first frequency band, and part or all of the first frequency band is used for communication between the first terminal and the base station;

The device further includes a configuration unit 804, configured to adjust a filter configuration of the radio frequency antenna according to the first frequency band included in the broadcast information, so that the first terminal transmits and receives data of the first frequency band;

The receiving unit 802 is further configured to receive the group information sent by the base station, where the group information includes an identifier ID of the group in which the first terminal is located and an ID of each terminal in the group; and the at least one second terminal is located in the same group as the first terminal.

Optionally, the channel response frame carries a second time length and a first sending policy; the second time length is a length of time that the base station allows the first terminal to occupy the channel; and the first sending policy is a terminal that specifies to send data to the first terminal. Or the sequence of the data when the other at least two terminals of the group in which the first terminal is located send data to the first terminal.

Optionally, the aggregating unit 803 is configured to: the first terminal does not send data to the base station after receiving the channel response frame, and the first terminal receives the at least one second terminal if the third terminal is within the third time length. Sending the second data, the second data is aggregated with the first data to generate aggregated data, and the aggregated data is sent to the base station within a fourth time length after experiencing the third time length; the third time length and the fourth time The sum of the lengths is less than or equal to the second length of time.

Optionally, the aggregating unit 803 is further configured to: if it is determined that the time for sending the aggregated data is greater than the fourth time length, the first data in the aggregated data is preferentially sent in the fourth time length.

Based on the same inventive concept, referring to FIG. 9, the embodiment of the present application further provides another communication device 900, which has the function of implementing the behavior of the base station in the communication method shown in FIG. The functions can be implemented in hardware or in hardware by executing the corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

Portions of the various possible implementations that the communication device 900 can implement are described in detail below.

Optionally, the communication device 900 is applied to the base station, and includes: a receiving unit 901, a sending unit 902, and a processing unit 903.

The receiving unit 901 is configured to receive a channel request frame sent by the first terminal of the M terminals.

The sending unit 902 is configured to: when the receiving unit 901 receives the channel request frame sent by the first terminal of the M terminals, return a channel response frame to the first terminal, where the channel request frame carries the first terminal requesting the occupied channel The first time length, the first time length is greater than the length of time required for the first terminal to send the first data, M≥1, and M is a positive integer;

The receiving unit 901 is further configured to receive aggregated data sent by the first terminal occupied channel;

The processing unit 903 is configured to process the aggregated data after the receiving unit 901 receives the aggregated data sent by the first terminal occupied channel, where the aggregated data is aggregated by the first data and the second data, and the first data is The data that the terminal wants to send to the base station, and the second data is data that the at least one second terminal wants to send to the base station.

Optionally, the sending unit 902 is further configured to send broadcast information, and the receiving unit 901 is further configured to receive registration information sent by each of the M terminals.

The method further includes a grouping unit 904, configured to group the M terminals, and send the group information to the M terminals respectively;

The broadcast information includes information of the first frequency band, and the first frequency band is used for communication between the M terminals and the base station; the registration information is used by the terminal to register the first frequency band.

Optionally, the grouping unit 904 is configured to determine the number of packets according to a theoretical quantity value of the terminal of the random contention radio channel capable of maximizing the system throughput;

The M terminals are grouped according to the determined number of packets and according to at least one of physical location of the M terminals, service type, and degree of power saving.

Optionally, the channel response frame carries a second time length, where the second time length is a length of time that the base station allows the first terminal to occupy the channel, and the channel response frame is further used to indicate other terminals of the M terminals except the first terminal. From the time when the channel response frame is received, the occupied channel is not allowed to transmit data to the base station for the second time length.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the present application has been described, it will be apparent that those skilled in the art can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to be construed as including the preferred The embodiments and all changes and modifications that fall within the scope of the application.

It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, it is intended that the present invention cover the modifications and variations of the embodiments of the present invention.

Claims

A communication method, comprising:

When the first terminal is to send the first data to the base station, the first terminal sends a channel request frame to the base station, where the channel request frame carries a first time length of the first terminal requesting to occupy the channel, where the first time length is greater than The length of time required by the first terminal to send the first data, and the sensitivity of the first data to the delay is greater than a preset threshold;

Receiving, by the first terminal, a channel response frame returned by the base station for the channel request frame;

The first terminal aggregates the first data and the second data to generate aggregated data, where the second data is sent by the at least one second terminal to the first terminal;

The first terminal sends the aggregated data to the base station.
The method according to claim 1, wherein before the first terminal sends the channel request frame to the base station, the method further includes:

Receiving, by the first terminal, the group information sent by the base station, where the group information includes an identifier ID of a group in which the first terminal is located, and an ID of each terminal in the group;

The at least one second terminal is located in the same group as the first terminal.
The method according to claim 2, wherein the receiving, by the first terminal, before receiving the group information sent by the base station, further comprising:

The first terminal receives the broadcast information sent by the base station, where the broadcast information includes a first frequency band, and part or all of the first frequency band is used for communication between the first terminal and the base station;

The first terminal adjusts a filter configuration of the radio frequency antenna according to the first frequency band included in the broadcast information, so that the first terminal sends and receives data of the first frequency band.
The method according to claim 1, 2 or 3, wherein the channel response frame carries a second time length and a first transmission strategy;

The second time length is a length of time that the base station allows the first terminal to occupy a channel;

The first sending policy is a sequence in which a terminal that sends data to the first terminal is specified, or a sequence in which the other at least two terminals in the group in which the first terminal is located send data to the first terminal.
The method of claim 4, wherein the first terminal aggregates the first data and the second data to generate aggregated data, and sends the aggregated data to the base station, including:

The first terminal does not send data to the base station within a third time period after receiving the channel response frame;

If the first terminal receives the second data sent by the at least one second terminal within the third time length, the second data is aggregated with the first data to generate the aggregated data, And transmitting the aggregated data to the base station within a fourth time length after experiencing the third time length;

The sum of the third time length and the fourth time length is less than or equal to the second time length.
A communication method, comprising:

When receiving the channel request frame sent by the first terminal of the M terminals, the base station returns a channel response frame to the first terminal, where the channel request frame carries the first request of the first terminal to occupy the channel. a length of time, the first time length is greater than a length of time required by the first terminal to send the first data, M≥1, and M is a positive integer;

Receiving, by the base station, the aggregated data sent by the first terminal on the channel, and processing the aggregated data; wherein the aggregated data is formed by aggregating the first data and the second data, where the first data is The first terminal The data to be sent to the base station, the second data is data that at least one second terminal wants to send to the base station.
The method of claim 6, wherein the receiving, before receiving the channel request frame sent by the first terminal of the M terminals, the base station further includes:

The base station groups the M terminals and sends the group information to the M terminals respectively.
The method according to claim 7, wherein before the base station groups the M terminals, the base station further includes:

The base station sends broadcast information, and receives registration information sent by each of the M terminals;

The broadcast information includes information of a first frequency band, where the first frequency band is used for communication between the M terminals and the base station; and the registration information is used by the terminal to perform registration of the first frequency band.
The method according to claim 7 or 8, wherein the base station groups the M terminals, including:

Determining, by the base station, the number of packets according to a theoretical quantity value of a terminal of a random contention radio channel capable of maximizing system throughput;

The base station groups the M terminals according to the determined number of the packets, and according to at least one of a physical location, a service type, and a required degree of power consumption of the M terminals.
The method according to any one of claims 6 to 9, wherein the channel response frame carries a second time length, and the second time length is a time when the base station allows the first terminal to occupy a channel. a length, the channel response frame is further configured to indicate that the terminal other than the first terminal of the M terminals starts from a moment when the channel response frame is received, within the second time length. It is not allowed to occupy the channel to send data to the base station.
A communication device, comprising: a transceiver, a processor and a memory, the memory for storing a set of instructions, the processor for calling an instruction stored in the memory, performing the following operations:

When the first data is to be sent to the base station, the transceiver sends a channel request frame to the base station, where the channel request frame carries a first time length of the device requesting to occupy the channel, where the first time length is greater than a length of time required by the transceiver to send the first data, where the sensitivity of the first data to the delay is greater than a preset threshold;

Receiving, by the transceiver, a channel response frame returned by the base station for the channel request frame;

Aggregating the first data and the second data to generate aggregated data, where the second data is sent by the at least one second terminal to the device;

Sending the aggregated data to the base station.
The device according to claim 11, wherein the processor is further configured to:

Receiving, by the transceiver, the packet information sent by the base station, where the packet includes the identifier ID of the group where the device is located, and each group in the group, before sending the channel request frame to the base station by using the transceiver The ID of the terminal;

The at least one second terminal is located in the same group as the device.
The device of claim 12, wherein the processor is further configured to:

Before receiving the packet information sent by the base station by using the transceiver, receiving, by the transceiver, broadcast information sent by the base station, where the broadcast information includes a first frequency band, and part or all of the first frequency band is used for Communicating between the device and the base station;

Adjusting a filter configuration of the radio frequency antenna according to the first frequency band included in the broadcast information, so that the transceiver transmits and receives data of the first frequency band.
The apparatus according to claim 11, 12 or 13, wherein said channel response frame carries a second Length of time and first sending strategy;

The second length of time is a length of time that the base station allows the device to occupy a channel;

The first sending policy is a sequence in which a terminal that transmits data to the device is specified, or when at least two other terminals of the group in which the device is located send data to the device.
The device of claim 14, wherein the processor is further configured to:

Not transmitting data to the base station for a third time period after the transceiver receives the channel response frame;

And if the second data sent by the at least one second terminal is received by the transceiver in the third time length, the second data is aggregated with the first data to generate the aggregated data, And transmitting, by the transceiver, the aggregated data to the base station within a fourth time length after experiencing the third time length;

The sum of the third time length and the fourth time length is less than or equal to the second time length.
A communication device, comprising: a transceiver, a processor and a memory, the memory for storing a set of instructions, the processor for calling an instruction stored in the memory, performing the following operations:

Receiving, by the transceiver, a channel request frame sent by the first terminal of the M terminals, returning a channel response frame to the first terminal, where the channel request frame carries the first terminal request to occupy a first time length of the channel, where the first time length is greater than a length of time required by the first terminal to send the first data, where M ≥ 1 and M is a positive integer;

Receiving, by the transceiver, the aggregated data that is sent by the first terminal and occupying the channel, and processing the aggregated data; wherein the aggregated data is aggregated by the first data and the second data, where the first The data is data that the first terminal wants to send to the device, and the second data is data that at least one second terminal wants to send to the device.
The device of claim 16, wherein the processor is further configured to:

Before the transceiver receives the channel request frame sent by the first terminal of the M terminals, the M terminals are grouped, and the group information is separately sent to the M terminals.
The device of claim 17, wherein the processor is further configured to:

Before the M terminals are grouped, transmitting broadcast information, and receiving registration information sent by each of the M terminals;

The broadcast information includes information of a first frequency band, where the first frequency band is used for communication between the M terminals and the device; and the registration information is used by the terminal to perform registration of the first frequency band.
The device according to claim 17 or 18, wherein the processor is further configured to:

Determining the number of packets based on a theoretical number of terminals of a randomly contention wireless channel capable of maximizing system throughput;

The M terminals are grouped according to the determined number of the packets, and according to at least one of a physical location of the M terminals, a service type, and a required degree of power saving.
The device according to any one of claims 16 to 19, wherein the channel response frame carries a second time length, and the second time length is a time when the device allows the first terminal to occupy a channel. a length, the channel response frame is further configured to indicate that the terminal other than the first terminal of the M terminals starts from a moment when the channel response frame is received, within the second time length. It is not allowed to occupy the channel to send data to the device.