CN114467346A

CN114467346A - Communication method and device

Info

Publication number: CN114467346A
Application number: CN201980101080.0A
Authority: CN
Inventors: 王俊伟
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2022-05-10
Also published as: WO2021068266A1

Abstract

The application discloses a communication method and a communication device, so that a sending terminal device can send first information to a receiving terminal device, the receiving terminal device can receive the first information, the first information can be used for determining an MCS adopted by a second-level scheduling signaling, and the MCS adopted by the second-level scheduling signaling is determined from one or more MCS (modulation and coding formats) according to the first information, so that the flexible configuration of the MCS adopted by the second-level scheduling signaling is realized.

Description

Communication method and device

Technical Field

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

Background

The current mobile communication technology supports data scheduling through two levels of scheduling information. It should be understood that the scheduling information described herein may be Downlink Control Information (DCI), Uplink Control Information (UCI), or Sidelink Control Information (SCI), etc. The first-level scheduling signaling may be used to carry information for channel detection. After receiving the first-stage scheduling signaling, the receiving end device can know which transmission resources the sending end device is likely to send data on according to the information of the channel detection, so that the receiving end device can avoid the transmission resources to reduce interference. The second-level scheduling signaling can be used for carrying data scheduling information and is mainly used for receiving and demodulating data by a receiving end, so that the receiving end equipment can receive the data according to the first-level SCI and the second-level scheduling signaling. The first-level scheduling signaling and the second-level scheduling signaling are commonly used for scheduling data.

However, in the current scheduling scheme, the Modulation and Coding Scheme (MCS) of the second-level scheduling signaling adopts a fixed format, which does not support flexible selection of the MCS of the second-level scheduling signaling, and the scheduling mode is not flexible enough.

Disclosure of Invention

The present application provides a communication method and apparatus, which are used to implement flexible configuration of Modulation and Coding Scheme (MCS) of a second-level scheduling signaling.

In a first aspect, the present application provides a method of communication. The method may be performed by the receiving end device or a chip in the receiving end device. In this application, the receiving end device refers to a device that receives a first-level scheduling signaling and a second-level scheduling signaling, and the first-level scheduling signaling and the second-level scheduling signaling together schedule data that is sent or received by the receiving end device.

The receiving end device may receive first information from the sending end device, where the first information may be used to determine an MCS used for the second level scheduling signaling, and determine the MCS used for the second level scheduling signaling from one or more MCS according to the first information.

By adopting the method, the transmitting terminal equipment can flexibly configure the MCS adopted by the second-stage scheduling signaling to the receiving terminal equipment, thereby improving the flexibility of two-stage data scheduling.

The information of the one or more MCSs may be configured by the access network device or may be stored in the receiving end device. Wherein, the receiving terminal equipment is accessed to the access network equipment. In addition, the receiving end device may also receive an MCS list from the transmitting end device, the MCS list including information of the one or more MCSs.

In one possible example, the first information may include a first indication carried in the first level scheduling signaling. The first indication is used for indicating the index of the MCS adopted by the second-level scheduling signaling, so that the explicit indication of the MCS adopted by the second-level scheduling signaling can be realized through the first-level scheduling signaling.

Illustratively, the first indication may be a fixed field and/or dynamic padding (padding) information in the first level scheduling signaling.

In this example, if the receiving end device determines that the received first-level scheduling signaling does not include the first indication, the receiving end device may determine the default MCS as the MCS used by the second-level scheduling signaling. The information of the default MCS may be stored in the sending end device, or the information of the default MCS may be configured by an access network device, and the receiving end device accesses the access network device.

In addition, in this example, the receiving end device may further determine the MCS used by the data according to the first MCS indication and the first indication received from the transmitting end device, so as to perform data transmission according to the MCS used by the data. Wherein the first MCS indication can be carried in the second level scheduling signaling.

In another possible example, the first information may include an indication of an MCS employed by the data. After receiving the first information, the receiving end device may determine, according to a first corresponding relationship, an MCS corresponding to the MCS used by the data as the MCS used by the second-level scheduling signaling, where the first corresponding relationship includes a corresponding relationship between one or more MCSs and alternative MCSs of the data, respectively, and the alternative MCSs of the data include the MCS used by the data. The first corresponding relationship may be stored in the receiving end device, or the first corresponding relationship may be sent to the receiving end device by an access network device.

In another possible example, the first information may include an index of an MCS employed by the data. After receiving the first information, the receiving end device may determine an index of the MCS used by the second-level scheduling signaling according to a ratio of M to N and an index of the MCS used by the data, where M is the number of the candidate MCSs and N is a set value.

Alternatively, the first information may include an index of an MCS employed by the data. The receiving end device may further receive a second indication from the sending end device or an access network device accessed by the receiving end device, where the second indication may be used to indicate a value of N, and the receiving end device may determine an index of the MCS used by the second-level scheduling signaling according to a ratio of M to N and an index of the MCS used by the data, where M is the number of the candidate MCSs.

In a second aspect, the present application provides a method of communication. The method may be performed by the sending end device or a chip in the sending end device. In this application, the sending end device is a device that sends a first-level scheduling signaling and a second-level scheduling signaling to the receiving end device.

The sending end device may send first information to the receiving end device, where the first information is used to determine an MCS used by the second-level scheduling signaling from one or more modulation and coding formats, MCSs.

The transmitting end device may transmit an MCS list to the receiving end device, where the MCS list includes information of the one or more MCSs.

In one possible example, the first information may include a first indication carried in the first level scheduling signaling. The first indication may be used to indicate an index of an MCS employed by the second level scheduling signaling. The first indication may be a fixed field and/or dynamic padding information in the first level scheduling signaling.

In this example, a first MCS indication may also be sent by a sending end device to the receiving end device, where the first MCS indication and the first indication are used to determine an MCS used by the data.

In another possible example, the first information may include indication information of an MCS used by the data, and the MCS used by the data and the MCS used by the second-level scheduling signaling have a corresponding relationship.

In another possible example, the first information may include an index of an MCS used by the data, and the MCS used by the data and a ratio of M to N may be used to determine the index of the MCS used by the second-level scheduling signaling, where M is the number of the candidate MCSs and N is a set value.

In addition, the first information may include an index of an MCS used by the data, and the sending end device may further send a second indication to the receiving end device, where the second indication is used to determine a value of N, and the MCS used by the data and a ratio of M to N may be used to determine an index of an MCS used by the second-level scheduling signaling, where M is the number of the candidate MCSs, and N is a set value.

In a third aspect, an embodiment of the present application provides a communication apparatus. The communication means may be adapted to perform the steps performed by the receiving end device in the first aspect or any of the possible designs of the first aspect. The communication device may implement each function or step or operation of the above methods in the form of a hardware structure, a software module, or a hardware structure plus a software module. For example, functional modules corresponding to functions or steps or operations in the above methods may be provided in the communication apparatus to support the receiving end device to execute the above methods.

When the communication device according to the third aspect is implemented by software modules, the communication device may include a communication module and a processing module, which are coupled to each other, wherein the communication module may be configured to support the communication device for communication, and the processing module may be configured to perform processing operations on the communication device, such as generating information/messages to be transmitted or processing received signals to obtain the information/messages.

The above communication module may be configured to perform the actions of the first aspect and/or any possible design of the first aspect, such as the actions of the receiving device sending information, messages, signaling or data to the sending device, or the actions of the receiving device receiving information, messages, signaling or data from the sending device. And/or the processing module may be configured to perform a processing action of the receiving end device in any possible design of the first aspect and/or the first aspect, for example, to control the communication module to perform operations such as receiving and/or sending information, message or signaling, and storing the information, for example, to determine an MCS used by the second-level scheduling signaling from one or more MCSs, and further, for example, to determine whether the first-level scheduling signaling includes the first indication.

For example, the communication module may be configured to receive first information from the transmitting device, where the first information may be used for determining an MCS used for second-level scheduling signaling. The processing module may be configured to determine, according to the first information, an MCS to be used for second-level scheduling signaling from one or more modulation and coding formats (MCSs).

The information of the one or more MCSs may be configured by an access network device, or stored in the receiving end device, which is accessed to the access network device.

The communication module may be further configured to receive an MCS list from the transmitting end device, the MCS list including information of the one or more MCSs.

In one possible example, the first information may include a first indication carried in the first level scheduling signaling, and the first indication may be used to indicate an index of an MCS used by the second level scheduling signaling.

Illustratively, the first indication may be a fixed field and/or dynamic padding information in the first level scheduling signaling.

In this example, if the processing module determines that the received first-level scheduling signaling does not include the first indication, the receiving end device may determine the default MCS as the MCS used by the second-level scheduling signaling. The information of the default MCS may be stored in the sending end device, or the information of the default MCS may be configured by an access network device, and the receiving end device accesses the access network device.

In addition, in this example, the processing module may further determine an MCS used by the data according to the first MCS indication and the first indication received by the communication module from the sending end device, so as to perform data transmission according to the MCS used by the data. Wherein the first MCS indication can be carried in the second level scheduling signaling.

In another possible example, the first information may include an indication of an MCS employed by the data. After the communication module receives the first information, the processing module may determine, according to a first corresponding relationship, an MCS corresponding to the MCS used by the data as the MCS used by the second-level scheduling signaling, where the first corresponding relationship includes a corresponding relationship between one or more MCSs and alternative MCSs of the data, respectively, and the alternative MCSs of the data include the MCS used by the data. The first corresponding relationship may be stored in the receiving end device, or the first corresponding relationship may be sent to the receiving end device by an access network device.

In another possible example, the first information may include an index of an MCS employed by the data. After the communication module receives the first information, the processing module may determine an index of an MCS used for the second-level scheduling signaling according to a ratio of M to N and an index of the MCS used for the data, where M is the number of the candidate MCSs and N is a set value.

Alternatively, the first information may include an index of an MCS employed by the data. The communication module may further receive a second indication from an access network device to which the sending end device or the receiving end device is accessed, where the second indication may be used to indicate a value of N, and the processing module may determine an index of an MCS used for the second-level scheduling signaling according to a ratio of M to N and an index of the MCS used for the data, where M is the number of the candidate MCSs.

When the communication apparatus according to the third aspect is implemented by a hardware component, the communication apparatus may comprise a processor configured to perform the steps performed by the receiving end device in the first aspect and/or any possible design of the first aspect. The communication device may also include a memory. Wherein the memory may be configured to store instructions (or programs, computer programs) for the processor to call and execute the instructions from the memory to perform the steps performed by the receiving device in any possible design of the first aspect and/or the second aspect. The communication device may also include a transceiver for the communication device to communicate.

Illustratively, the transceiver may be configured to perform the actions of transmitting and/or receiving performed by the receiving end device in the first aspect and/or any possible design of the first aspect, such as for performing the actions of the receiving end device transmitting information, messages, signaling or data to the transmitting end device, or for performing the actions of receiving information, messages, signaling or data from the transmitting end device. And/or the processor may be configured to perform processing actions of the receiving end device in the first aspect and/or any possible design of the first aspect, such as controlling the transceiver to receive and/or transmit information, messages or signaling, controlling the memory to store information, and the like. In particular, the transceiver may be adapted to perform the steps performed by the communication module of the third aspect above. The processor may be adapted to perform the steps performed by the processing module of the third aspect above.

In a fourth aspect, an embodiment of the present application provides a communication apparatus. The communication means may be adapted to perform the steps performed by the sending end device in the first aspect or any of the possible designs of the first aspect. The communication device may implement each function or step or operation of the above methods in the form of a hardware structure, a software module, or a hardware structure plus a software module. For example, functional modules corresponding to functions or steps or operations in the above methods may be provided in the communication apparatus to support the sending end device to execute the above methods.

When the communication apparatus of the fourth aspect is implemented by a software module, the communication apparatus may include a communication module and a processing module, which are coupled to each other, wherein the communication module may be configured to support the communication apparatus to perform communication, and the processing module may be configured to perform processing operations on the communication apparatus, such as generating information/messages to be transmitted or processing received signals to obtain the information/messages.

The above communication module may be configured to perform the actions of sending and/or receiving of the sending end device in the second aspect and/or any possible design of the second aspect, such as actions for sending information, messages, signaling, or data from the sending end device to the receiving end device. And/or the processing module may be configured to perform the processing actions of the sending end device in the second aspect and/or any possible design of the second aspect, for example, to control the communication module to perform operations such as receiving and/or sending information, message or signaling, and storing information.

For example, the communication module may be configured to send first information to a receiving end device, where the first information is used to determine an MCS used for second-level scheduling signaling from one or more modulation and coding formats (MCSs).

The communication module may also send an MCS list to the receiving end device, the MCS list including information of the one or more MCSs.

In this example, the communication module may further send a first MCS indication to the receiving end device, where the first MCS indication and the first indication are used to determine an MCS used by the data.

In addition, the first information may include an index of an MCS used by the data, and the communication module may further send a second indication to a receiving end device, where the second indication is used to determine a value of N, and the MCS used by the data and a ratio of M to N may be used to determine an index of an MCS used by the second-level scheduling signaling, where M is the number of the candidate MCSs, and N is a set value.

When the communication apparatus of the fourth aspect is implemented by hardware components, the communication apparatus may comprise a processor configured to perform the steps performed by the sending end device in the second aspect and/or any possible design of the second aspect. The communication device may also include a memory. Wherein the memory is operable to store instructions from which the processor is operable to invoke and execute the instructions to perform the steps performed by the sending end device in the second aspect and/or any possible design of the second aspect described above. The communication device may also include a transceiver for the communication device to communicate.

Illustratively, the transceiver may be configured to perform the actions of the second aspect and/or any possible design of the second aspect, such as the actions of the sending end device sending information, messages, signaling or data to the receiving end device, or the actions of the receiving end device receiving information, messages, signaling or data. And/or the processor may be configured to perform the processing actions of the sending end device in the second aspect and/or any possible design of the second aspect, such as controlling the transceiver to receive and/or send information, messages or signaling, and controlling the memory to store information. In particular, the transceiver may be adapted to perform the steps performed by the communication module of the fourth aspect above. The processor may be configured to perform the steps performed by the processing module of the fourth aspect above.

In a fifth aspect, the present application provides a communication system that may include the communication apparatus shown in the third aspect and the communication apparatus shown in the fourth aspect. Wherein, the communication device shown in the third aspect may be composed of software modules and/or hardware components. The communication means shown in the fourth aspect may be constituted by software modules and/or hardware components.

Taking the communication apparatus shown in the third aspect as a receiving end device and the communication apparatus shown in the fourth aspect as a sending end device as an example, in the communication system, the sending end device may be configured to send the first information to the receiving end device, and the receiving end device may be configured to receive the first information and determine, according to the first information, an MCS used by the second-level scheduling signaling from one or more MCS in modulation and coding format, so as to implement flexible configuration of the MCS used by the second-level scheduling signaling. The second-level scheduling signaling and the first-level scheduling signaling are used for scheduling data, and the first-level scheduling signaling is sent by the sending end device.

In a sixth aspect, the present application provides a computer storage medium having instructions stored thereon that, when invoked for execution on a computer, cause the computer to perform the method of the first aspect or any one of the possible designs of the first aspect, or the second aspect or any one of the possible designs of the second aspect.

In a seventh aspect, the present application provides a computer program product, which may contain instructions, when run on a computer, cause the computer to perform the method as described above in the first aspect or in any one of the possible designs of the first aspect, or in the second aspect or in any one of the possible designs of the second aspect.

In an eighth aspect, the present application provides a chip and/or a chip system comprising a chip, which chip may comprise a processor. The chip may also include a memory (or storage module) and/or a transceiver (or communication module). The chip may be adapted to perform the method as described in the above-mentioned first aspect or any one of the possible designs of the first aspect, or in the second aspect or any one of the possible designs of the second aspect. The chip system may be formed by the above chip, and may also include the above chip and other discrete devices, such as a memory (or a storage module) and/or a transceiver (or a communication module).

Advantageous effects in the second to eighth aspects and possible designs thereof described above reference may be made to the description of advantageous effects of the method described in the first aspect and possible designs thereof.

Drawings

Fig. 1 is a schematic architecture diagram of a wireless communication system according to an embodiment of the present application;

fig. 2 is a block diagram of another wireless communication system according to an embodiment of the present application;

fig. 3 is a flowchart illustrating a communication method according to an embodiment of the present application;

fig. 4 is a flowchart illustrating another communication method according to an embodiment of the present application;

fig. 5 is a flowchart illustrating another communication method according to an embodiment of the present application;

fig. 6 is a flowchart illustrating another communication method according to an embodiment of the present application;

fig. 7 is a flowchart illustrating another communication method according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

The communication method provided by the embodiment of the application can be applied to a wireless communication system, and the wireless communication system can comprise a sending end device and a receiving end device, wherein the sending end device carries out data scheduling on the receiving end device through two-stage scheduling information. Specifically, the sending end device may schedule data through the first-level scheduling signaling and the second-level scheduling signaling, where the data may include data sent from the sending end device to the receiving end device and/or data sent from the receiving end device to the sending end device.

The first-level scheduling signaling is mainly used for carrying information of channel detection, so that the receiving end device knows which SL resources can be used for data transmission. The second-level scheduling signaling is mainly used for carrying data scheduling information, which is used for a receiving end to receive and demodulate data, where the data scheduling information is, for example, hybrid automatic repeat request (HARQ) information, such as a process number of an HARQ process, a retransmission/new transmission identifier, and the like.

It should be understood that the above wireless communication system is applicable to both low frequency scenarios (sub 6G) and high frequency scenarios (above 6G). The application scenarios of the wireless communication system include, but are not limited to, a Long Term Evolution (LTE) system, a Frequency Division Duplex (FDD) system, a Time Division Duplex (TDD) system, a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a future fifth generation system, a New Radio (NR) communication system, or a future evolved Public Land Mobile Network (PLMN) system, and the like.

As shown in fig. 1, in one possible example of the wireless communication system, the wireless communication system may include a terminal 101 and a network device 102. The network device 102 may be a sending end device, and the terminal 101 may be a receiving end device.

The terminal 101 shown above may be a User Equipment (UE), a terminal (terminal), an access terminal, a terminal unit, a terminal station, a Mobile Station (MS), a remote station, a remote terminal, a mobile terminal (mobile terminal), a wireless communication device, a terminal agent or a terminal device, etc. The terminal 101 may be capable of wireless transceiving, and may be capable of communicating (e.g., wirelessly communicating) with one or more network devices of one or more communication systems and receiving network services provided by the network devices, including but not limited to the illustrated network device 102.

Among them, the terminal 101 may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved PLMN network, and the like.

In addition, the terminal 101 may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; the terminal 101 may also be deployed on the water surface (e.g., a ship, etc.); the terminal 101 may also be deployed in the air (e.g., aircraft, balloons, satellites, etc.). The terminal 101 may specifically be a mobile phone (mobile phone), a tablet (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical treatment (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in home (smart home), and the like. The terminal 101 may also be a communication chip having a communication module.

Network device 102 may be an access network device (or access network site). The access network device refers to a device providing a network access function, such as a Radio Access Network (RAN) base station, and the like. The network device 102 may specifically include a Base Station (BS), or include a base station and a radio resource management device for controlling the base station, and the like. The network device 102 may also include relay stations (relay devices), access points, and base stations in future 5G networks, base stations or NR base stations in future evolved PLMN networks, and so on. The network device 102 may be a wearable device or a vehicle-mounted device. The network device 102 may also be a communication chip having a communication module.

For example, network devices 102 include, but are not limited to: next generation base station (gbb, gNB) in 5G, evolved node B (eNB) in LTE system, Radio Network Controller (RNC), Node B (NB) in WCDMA system, radio controller under CRAN system, Base Station Controller (BSC), Base Transceiver Station (BTS) in GSM system or CDMA system, home base station (e.g., home evolved node B or home node B, HNB), Base Band Unit (BBU), transmission point (TRP), Transmission Point (TP), or mobile switching center, etc.

In the wireless communication system shown in fig. 1, the network device 102 may schedule data of the terminal 101 through a first level scheduling signaling and a second level scheduling signaling. The first-level scheduling signaling may be first-level Downlink Control Information (DCI) or first-level Uplink Control Information (UCI), and the second-level scheduling signaling may be second-level DCI or second-level UCI. The first-level DCI and the second-level DCI may be used to schedule downlink data sent by the network device 102 to the terminal 101, where the downlink data may be carried on a Physical Downlink Shared Channel (PDSCH). The first-level UCI and the second-level UCI may be used to schedule downlink data sent by the terminal 101 to the network device 102, where the downlink data may be carried on a Physical Uplink Shared Channel (PUSCH).

In another possible example of the wireless communication system, as shown in fig. 2, the wireless communication system may include a terminal 103 and a terminal 104, and SL communication may be performed between the terminal 103 and the terminal 104. The terminal 103 may be a sending end device, and the terminal 104 may be a receiving end device. Alternatively, the terminal 104 may be a transmitting end device, and the terminal 103 may be a receiving end device.

In the wireless communication system shown in fig. 2, the terminal 103 may schedule data of the terminal 104 through a first level scheduling signaling and a second level scheduling signaling. The first-level scheduling signaling may be a first-level SCI, and the second-level scheduling signaling may be a second SCI, where the first-level SCI and the second-level SCI may be used for scheduling data transmitted by the terminal 103 to the terminal 104 and/or for scheduling data transmitted by the terminal 104 to the terminal 103. Data transmitted between

terminals

103 and 104 may be carried on a physical sidelink shared channel (psch).

The terminal 103 and the terminal 104 may be user equipment, terminals, access terminals, terminal units, terminal stations, mobile stations, remote terminals, mobile terminals, wireless communication devices, terminal agents or terminal devices, and the like, and refer to the above description of the terminal 101.

Illustratively, the terminal 103 may also have access to the access network equipment, so that the SL link between the terminal 103 and the terminal 104 for SL communication between the terminal 103 and the terminal 104 may be configured by the access network equipment. The access network device may be a RAN base station, and the like, and refer to the above description of the network device 102. It should be understood that the terminal 104 may access an access network device as shown in fig. 2, or other access network devices not shown in fig. 2.

Based on the wireless communication system shown in fig. 1 or fig. 2, an embodiment of the present application provides a communication method to flexibly select an MCS used by a second-level scheduling signaling, so that data transmission is implemented between a sending end device and a receiving end device in the wireless communication system according to the MCS used by the second-level scheduling signaling.

The communication method provided by the embodiment of the application can include the following steps as shown in fig. 3:

s101: the method comprises the steps that a sending end device sends first information to a receiving end device, wherein the first information is used for determining an MCS (MCS adopted by a second-level scheduling signaling, which is simply and conveniently explained later) adopted by the second-level scheduling signaling, the second-level scheduling signaling and a first-level scheduling signaling together schedule data, and the first-level scheduling signaling is sent to the receiving end device by the sending end device.

It should be understood that the second level scheduling signaling and the first level scheduling signaling may be used for scheduling data transmitted between the sending end device and the receiving end device.

S102: and the receiving end equipment receives the first information.

S103: and the receiving end equipment determines the MCS adopted by the second-level scheduling signaling from the one or more MCSs according to the first information.

By adopting the method, the flexible configuration of the MCS adopted by the second-level scheduling signaling can be realized, and the flexibility of data scheduling can be improved.

For example, the above sending end device may be a network device 102 as shown in fig. 1, and the receiving end device may be a terminal 101 as shown in fig. 1, or the above sending end device may be a network device 103 as shown in fig. 2, and the receiving end device may be a terminal 104 as shown in fig. 2.

The above one or more MCSs may be configured from the sending end device to the receiving end device, defined by a protocol, or determined in a preconfigured manner, so that the sending end device and the receiving end device agree on the setting of the one or more MCSs, and therefore the sending end device and the access point device may determine the MCS of the system as the MCS used for the second-level scheduling signaling according to the first information. Furthermore, if the architecture shown in fig. 2 is employed, one or more MCSs may be configured by the access network equipment to the terminal 103 and/or the terminal 104.

For example, the one or more MCSs may be represented as an MCS list, which may carry information of the one or more MCSs.

As shown in table 1, the information of the MCS may include any one or more of MCS index (index), modulation order (modulation order), Target code Rate (Target code Rate), or spectral efficiency (spectral efficiency). In this application, the MCS index can be represented as I_MCSThe modulation order can be expressed as Q_mThe spectral efficiency may be represented as R and the target code rate may be represented as R x [1024 [ ]]I.e. the value of the target code rate is equal to R1024.

I _MCS	Q _m	Rx[1024]	R
0	2	120	0.2344
1	2	157	0.3066
2	2	193	0.3770
3	2	251	0.4902
4	2	308	0.6016
5	2	379	0.7402
6	2	449	0.8770
7	2	526	1.0273

TABLE 1

It should be understood that the MCS list in this application is only one of the expressions of one or more MCSs, and for convenience of description, it should be understood that the MCS list is used to represent one or more MCSs. The MCS list is an effective MCS list configured at the transmitting end device and the receiving end device. The sending end device and the receiving end device may simultaneously maintain one or more candidate MCS lists, and for the case of maintaining multiple candidate MCS lists, any two candidate MCS lists in the multiple MCS lists are not valid at the same time.

In an implementation, an access network device accessible by a transmitting end device and/or a receiving end device indicates, through signaling, an MCS list in effect from a plurality of alternative MCS lists. For example, in the architecture shown in fig. 1, the validated MCS list may be indicated to the terminal 101 by the network device 102, and in the architecture shown in fig. 2, the validated MCS list may be indicated to the terminal 103 and/or the terminal 104 by the access network device. Alternatively, in the architecture shown in fig. 2, the validated MCS list may be indicated to the terminal 104 by the terminal 103. The above multiple candidate MCS lists may be configured by the access network equipment, defined by the protocol, or determined by a pre-configured manner in a similar manner when configuring the valid MCS list.

Further, in order to increase the demodulation performance of the MCS used for the second-level scheduling signaling, the coding rate factor of the second-level MCS may be set on the basis of the MCS list shown in table 1, so as to obtain the MCS list shown in table 2. The value of the coding rate factor is less than 1, for example, the value of the coding rate factor may be 1/2, 1/3.125 or other values.

TABLE 2

According to table 2, after determining the MCS used by the second-level scheduling signaling, the code rate of the MCS may be adjusted according to the coding rate factor corresponding to the MCS, and the adjusted code rate is used as the code rate of the MCS used by the second-level scheduling signaling.

For example, if the MCS of the second level scheduling signaling is the MCS with the index "0" in table 2, since the coding rate factor of the MCS is (1/2), the code rate R of the MCS of the second level scheduling signaling is (1/2) × (120/1024) ═ 0.1172, and the Q of the MCS of the second level scheduling signaling is_mIs 2 shown in Table 2.

The code rate of each MCS adjusted according to the coding rate factor of each MCS may be arranged in table 2, and for example, the code rate R of the MCS with the index "0" may be arranged in 0.1172.

In a first implementation manner provided by the embodiment of the present application, based on the MCS list shown in table 1, the first information in S101 may be used to indicate one of the one or more MCSs described in the MCS list, for example, the first information may represent an MCS index by a bit (bit) to indicate that the MCS is an MCS used by the second-level scheduling signaling.

For example, the first information may include a first indication, and the first indication may be carried in the first level scheduling signaling. For example, the first indication is a field in the first-level scheduling signaling, such as a fixed field, or dynamic padding (padding) information, or a joint indication of the fixed field and the dynamic padding field. The fixed field is field information fixedly contained in the first-level scheduling signaling, and the dynamic padding information is padding information originally increased to enable the sum of the lengths of all the fields defining the scheduling signaling terminal to reach a preset value. The combination of the fixed field and the dynamic filling information means that: when the first-level scheduling signaling does not contain dynamic filling information, fixed field indication is adopted, and when the first-level scheduling signaling contains dynamic filling information, the fixed field and the filling information can be adopted for indicating together.

In a specific example, when the number of bits of the padding information is less than or equal to the number of bits (i.e., log2(M)) of the binary representation of the number of MCS entries (counted as M) in table 1, the value of the padding information can be taken as the MCS indication adopted by the second-level SCI.

For example, as shown in table 1, the number of entries in MCS in table 1 is 8, i.e., M is 8, and log2(M) is 3. When the number of bits of the padding information is less than or equal to 3, the value of the padding information may be used as an index of the MCS used for the second-level scheduling signaling. For example, if the number of bits of padding is 1, padding information "0" indicates MCS index "0", and padding information "1" indicates MCS index "1". For example, if the number of bits of padding is 2, padding information "00" indicates MCS index "0", padding information "01" indicates MCS index "1", padding information "10" indicates MCS index "2", and padding information "11" indicates MCS index "3". For another example, if the number of bits of padding is 3, padding information "101" indicates MCS index "5", and padding information "111" indicates MCS index "7".

In another specific example, when the number of bits of the padding information is greater than the number of bits of the binary representation of the MCS entry number (M) in table 1, the value of X bits in the padding information may be taken as the MCS indication adopted by the second-level SCI, where the value of X is less than or equal to the number of bits of the binary representation of the MCS entry number (M) in table 1.

For example, as shown in table 1, the number of entries in MCS in table 1 is 8, i.e., M is 8, and log2(M) is 3. When the number of bits of the padding information is greater than 3 (for example, the length of the padding information is 10 bits), a value represented by consecutive X bits in the values of the padding information may be used as an index of the MCS used in the second-level scheduling signaling, and X is less than or equal to 3. Wherein the X bits may be the first X bits, the last X bits, or bits located at other positions in the padding information. The position of the X bits in the padding information can be configured by the sending device, defined by a protocol, or determined in a preconfigured manner.

For example, the MCS in table 1 has 8 entries, i.e., M is 8, and log2(M) is 3. If the padding information is "abceeehig", where a, b, c, e, h, i, and g respectively represent a bit, and a value of each bit may be 0 or 1, a value of the bit "abc" may be used as an index of the MCS used in the second-level scheduling signaling. Alternatively, the value of bit "hig" may be used as an index to the MCS used for the second level scheduling signaling.

In addition, when the receiving end device determines that the first level scheduling signaling does not include the first indication (e.g., padding information), the receiving end device may adopt a default MCS as the MCS used by the second level scheduling signaling. Wherein the default MCS may be one of the one or more MCSs shown in table 1, such as an MCS with an index of 0. Alternatively, the information of the default MCS may be configured by the transmitting device, defined by the protocol, or determined by a preconfigured manner, for example, the default MCS is BPSK, and the code rate is 60/1024.

When the joint indication of the fixed field and the dynamic padding field is adopted, still taking table 1 as an example, the number of MCS entries in table 1 is 8, that is, M is 8, and log2(M) is 3. Assuming that the fixed field MCS-b0 is 1 bit and the padding information includes MCS-b1 and MCS-b2, and MCS-b1 and MCS-b2 respectively occupy 1 bit, the MCS adopted by the second level scheduling signaling is jointly indicated by using MCS-b2, MCS-b1 and MCS-b 0. Specifically, when MCS-b0 is 0, MCS-b1 is 0, and MCS-b2 is 1, the combination of MCS-b2, MCS-b1, and MCS-b0 is "001", and may indicate an index "1" of the MCS used in the second-level scheduling signaling.

In the first implementation manner above, if the architecture shown in fig. 2 is adopted, before S101, a dynamic indication may be sent to the terminal 103 by the access network device, where the dynamic indication may be used to indicate that one MCS in the MCS list is the MCS used by the second-level scheduling signaling by using the first information. After receiving the dynamic indication, the terminal 103 may send first information to the terminal 104 to indicate the MCS employed for the second level scheduling signaling.

Taking the architecture as shown in fig. 2 as an example, in a first implementation manner, a communication method provided in an embodiment of the present application may include the following steps shown in fig. 4:

s201: the access network equipment sends a dynamic indication to the terminal 103, where the dynamic indication is used to indicate that one of the one or more MCSs shown in the MCS list indicated by the first information indicates the MCS used by the second-level scheduling signaling.

Illustratively, the access network equipment may also configure the MCS list to terminal 103 and/or terminal 104.

S202: the terminal 103 transmits the first-level SCI and the second-level SCI to the terminal 104, and the first-level SCI and the second-level SCI are used to schedule SL data between the terminal 103 and the terminal 104.

For example, the first level SCI may include padding information indicating one of the one or more MCSs described in table 1.

Accordingly, the terminal 104 receives the first-level SCI.

S203: the terminal 104 determines whether the first-level SCI includes padding information.

If the terminal 104 determines that the first-level SCI includes padding information, S204 is executed; otherwise, if the terminal 104 determines that the first-level SCI does not include padding information, S205 is performed.

S204: the terminal 104 determines one of the one or more MCSs as the MCS to be used by the second-level SCI according to the padding information.

S205: the terminal 104 determines the default MCS to be the MCS to be used by the second-level SCI. Thereafter, the terminal 104 may receive the second-level SCI according to the MCS employed by the second-level SCI.

For example, the information of the default MCS may be configured by the access network device to the terminal 103 and/or the terminal 104, or defined by a protocol, or pre-configured in the terminal 103 and/or the terminal 104.

In the second implementation manner provided in the embodiment of the present application, the sending end device may further send a first MCS indication to the receiving end device, where the first MCS indication and the first indication (e.g., padding information in the first-level scheduling signaling) may be used to determine that one MCS in the MCS list is an MCS used by data transmitted between the sending end device and the receiving end device (hereinafter, referred to as "MCS used by data"), so that flexible indication of the MCS used by the data may be achieved. The first MCS indication may be carried in the second level scheduling signaling, for example, the first MCS indication may be information with a length of Y bits in the second level scheduling signaling.

The manner in which the MCS to be used for the data is determined based on the first MCS indication and the first indication is described below with reference to table 3.

As shown in table 3, each MCS in the MCS list may respectively correspond to an MCS index used by the data, and after the receiving end device receives the first indication from the sending end device and determines the MCS used by the second-level scheduling signaling according to the first indication, the receiving end device may receive the second-level scheduling signaling according to the MCS used by the second-level scheduling signaling, and obtain the first MCS indication according to the received second-level scheduling signaling. After that, the receiving end device may determine the MCS index adopted by the data according to the first MCS indication and the first indication, and use the MCS corresponding to the MCS index adopted by the data as the MCS adopted by the data. For example, the MCS index used by the data may be information with a length of X + Y bits, or the MCS index used by the data is obtained by combining the X bits indicated by the first MCS and the Y bits indicated by the first MCS.

TABLE 3

As shown in table 3, the MCS list includes 32 MCS, and thus one MCS needs to be indicated by 5-bit information, respectively. Here, the length of the first MCS indication may be set to 2 bits, i.e., Y ═ 2, and the length of the first indication may be set to 3 bits, i.e., X ═ 3. In other words, the first MCS indication and the combination of the first indication are used to represent the MCS index employed by the data.

For example, when the first indication is "00" and the first MCS indication is "001", the MCS index adopted by the data may be "00001", and at this time, the MCS with the index of "1" in the MCS list may be determined as the MCS adopted by the data according to table 3. For another example, when the first indication is "01" and the first MCS indication is "001", the MCS index adopted by the data is "01001", and at this time, the MCS with the index of "9" in the MCS list may be determined as the MCS adopted by the data.

Alternatively, the MCS index to be used for the data may be calculated according to the following formula:

K＝V _y*(2^X)+V _x(formula one);

where K denotes the MCS index employed for the data, V_yA decimal value, V, representing a first MCS indication_xThe decimal value representing the first indication, and X represents the length of the first indication (or X represents the number of bits of the first indication).

For example, when X is 3, if V_y0, and V_xWhen the index is 7, the MCS index used for the data is 0 × 8+7 — 7.

It should be understood that, in the above example, the MCS index used for combining the first MCS indication to obtain the data after the first indication is set, and the MCS index used for combining the first MCS indication to obtain the data after the first MCS indication may also be set. At this time, if the first indication is "00" and the first MCS indication is "001", the MCS index used for the data is "00100".

Or, if the MCS index used by the data is calculated by using the formula, the formula may be replaced by the following formula two:

K＝V _x*(2^Y)+V _y(formula two);

wherein K represents MCS index adopted by data, V_yA decimal value, V, representing a first MCS indication_xThe decimal value representing the first indication, and Y represents the length of the first MCS indication (or, Y represents the number of bits of the first MCS indication).

Taking the architecture as shown in fig. 2 as an example, in the above second implementation manner, the communication method provided in the embodiment of the present application may include the following steps as shown in fig. 5:

s301: the terminal 103 transmits the first-level SCI and the second-level SCI to the terminal 104, and the first-level SCI and the second-level SCI are used to schedule SL data between the terminal 103 and the terminal 104. The first-level SCI carries a first indication, and the second-level SCI carries a first MCS indication.

Illustratively, the first indication may be padding information in the first level SCI.

Accordingly, the terminal 104 receives the first-level SCI.

S302: the terminal 104 determines the MCS to be used by the second-level SCI according to the first indication.

S303: the terminal 104 receives the second-level SCI according to the MCS adopted by the second-level SCI, and obtains a first MCS indication carried by the second-level SCI.

S304: the terminal 104 determines the MCS to be used for the data based on the first indication and the first MCS indication.

S305: the terminal 104 transmits data according to the MCS adopted by the data.

In a third implementation manner provided by the embodiment of the present application, the MCS list may include a correspondence between an MCS and an alternative MCS for data (which may be referred to as a first correspondence hereinafter), where the alternative MCS for data may be used to determine an MCS used by data transmitted between the transmitting end device and the receiving end device (or the MCS used by the data is one of the alternative MCSs). The MCS employed by the data may be one of the alternative MCSs for the data. In this example, the first information may include indication information of an MCS used by the data, which is used to indicate the MCS used by the data, and the receiving end device may determine, according to the first corresponding relationship, the MCS corresponding to the MCS used by the data as the MCS used by the second-level scheduling information.

In this example, the first information may specifically include a second MCS indication, which may include indication information of an MCS used by the data, for example, an MCS used by the data transmitted between the transmitting end device and the receiving end device may be indicated from one or more candidate MCSs. For example, the second MCS indication may be an index of the MCS adopted by the data, so that the receiving end device may determine, according to the first corresponding relationship, the MCS corresponding to the MCS adopted by the data as the MCS adopted by the second-level scheduling signaling. Wherein one or more alternative MCSs for the data may be represented by an MCS list, that is, the same MCS list may be used for determining both the MCS used for the data and the MCS used for the second level scheduling signaling.

As shown in table 4, the MCS list may include information of one or more MCSs and information of MCSs corresponding to the second-level scheduling information, where the one or more MCSs may be used as alternative MCSs for determining the MCS used by the data. The MCS information of each second level scheduling information may be used to indicate an MCS corresponding to one candidate MCS, so that after determining the MCS used by the data, the MCS corresponding to the second level scheduling information may be determined according to the MCS used by the data.

TABLE 4

As shown in table 4, when the MCS used by the data is the MCS with the index "0", the receiving end device may determine that the MCS used by the second level scheduling signaling is Pi/2BPSK, and the code rate is 60/1024.

When the MCS used for the data is the MCS with the index "2" in table 4, the receiving end device may determine that the index of the MCS used for the second level scheduling signaling is 0, and further may determine that the MCS used for 0 is the MCS used for the second level scheduling signaling.

It should be understood that the above first correspondence may be embodied as I of MCS in Table 4_MCS、Q _m、Rx[1024]Or the corresponding relation between R and the MCS information of the second level scheduling information. Wherein the first corresponding relationship mayConfigured by the access network device, defined by a protocol, or stored in a pre-configured manner at the sending end device and/or the receiving end device. In one possible example, in the architecture shown in fig. 2, the MCS information and I of the second-level scheduling information may be configured to the terminal 103 and the terminal 104 by the access network device respectively_MCSCorresponding relation between, Q of MCS_m、Rx[1024]And R may be defined by a protocol or stored in a preconfigured way at the terminal 103 as well as at the terminal 104.

In a third implementation, the second MCS indication may be carried in the first level scheduling signaling. Specifically, the second MCS indication may be indication information used for indicating an MCS used by the data in the first level scheduling signaling.

Taking the architecture as shown in fig. 2 as an example, in the third implementation manner above, the communication method provided in the embodiment of the present application may include the following steps as shown in fig. 6:

s401: the terminal 103 transmits the first-level SCI and the second-level SCI to the terminal 104, and the first-level SCI and the second-level SCI are used to schedule SL data between the terminal 103 and the terminal 104. Wherein, the first level SCI carries a second MCS indication, and the second MCS indication may include indication information of an MCS used by data.

Illustratively, the second MCS indication may be information in the first-level SCI for indicating an MCS to be employed by the data.

Accordingly, the terminal 104 receives the first-level SCI.

S402: the terminal 104 determines the MCS to be used for the data according to the second MCS indication.

S403: the terminal 104 determines an MCS used by the second-level SCI corresponding to the MCS used by the data according to a first corresponding relationship, where the first corresponding relationship is a corresponding relationship between one or more candidate MCSs of the data and one or more MCSs, and the one or more candidate MCSs of the data include the MCS used by the data.

It should be understood that the first correspondence may be embodied by an MCS table, such as shown in table 4.

S404: the terminal 104 receives the second-level SCI according to the MCS employed by the second-level SCI.

In a fourth implementation manner provided in the embodiment of the present application, the receiving end device may further determine, according to a ratio of M to N and an index of an MCS used for data, an index of the MCS used for the second-level scheduling signaling, where M is the number of the one or more alternative MCSs for the data, and the MCS used for the data is one of the one or more alternative MCSs for the data.

Illustratively, N may be a positive integer. The value of N may be configured by the sending end device, for example, in the architecture shown in fig. 1, the network device 102 may configure the value of N to the terminal 101 through signaling, or in the architecture shown in fig. 2, the terminal 103 may configure the value of N to the terminal 104. In addition, in the architecture shown in fig. 2, a value of N may be configured to the terminal 103 and/or the terminal 104 by the access network device. In addition, the value of N may also be defined by a protocol or determined in a preconfigured manner.

For example, the value of N may be configured by the indication information, for example, the receiving end device may receive a second indication, where the second indication is used to indicate the value of N. The second indication may be sent by the access network device or by the sending end device. Or, the value of N may be configured by the access network device or the sending end device in an implicit indication manner. For example, the receiving end device may receive a second indication, where the second indication may be used to indicate modulation orders Qm, where there is an association between a value of each Qm and a value of N, for example, a currently validated MCS list is shown in table 1, and indexes of MCSs with Qm of 2 in the MCS list are "0" to "9", so when the second indication is used to configure Qm of 2, the value of N may be set to 10.

In a fourth implementation, the first information may include a third MCS indication indicating a MCS to be used by the data from the alternative MCS for the one or more data, e.g., the third MCS indication is an index of the MCS to be used by the data. Wherein the alternative MCS for the one or more data may be represented by the MCS list.

As shown in table 5, the MCS list may include information of one or more MCSs. Wherein, one or more MCS can be used as alternative MCS for determining the MCS adopted by the data.

TABLE 5

After determining the MCS to be used by the data according to the MCS list shown in table 5, for example, the receiving end device may determine the index of the MCS to be used by the second level scheduling signaling according to the number M of MCSs in the MCS list, the index of the MCS to be used by the data, and the parameter N, and determine the MCS to be used by the second level scheduling signaling from table 5 according to the index.

In one possible example, the index of the MCS employed for the second level scheduling signaling may be calculated according to the following formula:

mcs_index_2 ^ndXCI (mcs _ index _ date/(ceiling (M/N)) (equation three)

Wherein mcs _ index _2^ndXCI represents the index of the MCS used for the second level scheduling signaling, MCS _ index _ date represents the index of the data, ceiling () represents the ceiling, and floor () represents the ceiling.

For example, when the MCS list shown in table 5 is used as the MCS list, if the index of the MCS used by the data indicated by the third MCS is 5, MCS _ index _2 may be determined according to formula three^ndXCI (8/(ceiling (32/4))) 1, and MCS index for the data indicated by the third MCS is 31, MCS _ index _2 may be determined according to formula three^ndXCI ＝floor(31/(ceiling(32/4))＝3。

It should be understood that, when calculating the index of the MCS used in the second-level scheduling signaling, the above three notations may be correspondingly modified and calculated according to the modified formula. For example, an addition or subtraction operation is performed with a certain constant n (n is a positive integer) on the basis of the result after the above floor () operation, or a ceiling () operation is omitted on the basis of formula three, or the like.

Taking the architecture as shown in fig. 2 as an example, in the above fourth implementation manner, the communication method provided in the embodiment of the present application may include the following steps shown in fig. 7:

s501: the terminal 103 transmits the first-level SCI and the second-level SCI to the terminal 104, and the first-level SCI and the second-level SCI are used to schedule SL data between the terminal 103 and the terminal 104. Wherein, the first level SCI carries a third MCS indication, and the third MCS indication is used for indicating an index of the MCS adopted by the data.

Illustratively, the third MCS indication may be an index in the first level SCI for indicating the MCS employed by the data.

Accordingly, the terminal 104 receives the first-level SCI.

S502: the terminal 104 obtains an index of the MCS used for the data.

S503: the terminal 104 determines the index of the MCS used by the second-level SCI according to the index of the MCS used by the data and the ratio of M, N.

Wherein M is the number of terms of the candidate MCS in the one or more candidate MCSs, and M, N is a positive integer. N may be indicated by the access network equipment and/or the terminal 103 by signaling, or may be determined by protocol definition or by means of pre-configuration.

S504: the terminal 104 receives the second-level SCI according to the MCS employed by the second-level SCI.

In the embodiments provided in the present application, the method and the method flow provided in the embodiments of the present application are introduced from the perspective of functions implemented by the sending end device and the receiving end device. In order to implement each function in the method provided in the embodiment of the present application, the sending end device and the receiving end device may include a hardware structure and/or a software module, and implement each function in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether any of the above-described functions is implemented as a hardware structure, a software module, or a hardware structure plus a software module depends upon the particular application and design constraints imposed on the technical solution.

As shown in fig. 8, a communication apparatus provided in an embodiment of the present application may include a communication module 801 and a processing module 802, where the communication module 801 and the processing module 802 are coupled to each other. The communication apparatus 800 may be configured to perform the steps performed by the receiving end device in the above method embodiments. The communication module 801 may be used to support the communication device 800 for communication, and the communication module 801 may have a wireless communication function, for example, to communicate with another communication device through a wireless communication method. The processing module 802 may be configured to support the communication apparatus 800 to perform the processing actions of the receiving end device in the above method embodiments, including but not limited to: generate information, messages to be sent by the communication module 801, and/or demodulate and decode signals received by the communication module 801, and so on.

For example, the communication module 801 may be configured to receive first information from a transmitting device, where the first information may be used for determining an MCS used for second-level scheduling signaling. The processing module 802 may be configured to determine an MCS used for the second-level scheduling signaling from one or more modulation and coding formats, MCSs, according to the first information.

The communication module 801 may be further configured to receive an MCS list from the transmitting end device, where the MCS list includes information of the one or more MCSs.

In this example, if the processing module 802 determines that the received first-level scheduling signaling does not include the first indication, the receiving end device may determine the default MCS as the MCS used by the second-level scheduling signaling. The information of the default MCS may be stored in the sending end device, or the information of the default MCS may be configured by an access network device, and the receiving end device accesses the access network device.

Also in this example, the processing module 802 may further determine the MCS adopted by the data according to the first MCS indication and the first indication received by the communication module 801 from the transmitting end device, so as to perform data transmission according to the MCS adopted by the data. Wherein the first MCS indication can be carried in the second level scheduling signaling.

In another possible example, the first information may include an indication of an MCS employed by the data. After the communication module 801 receives the first information, the processing module 802 may determine, according to a first corresponding relationship, an MCS corresponding to the MCS used by the data as the MCS used by the second-level scheduling signaling, where the first corresponding relationship includes a corresponding relationship between one or more MCSs and alternative MCSs of the data, respectively, and the alternative MCSs of the data include the MCS used by the data. The first corresponding relationship may be stored in the receiving end device, or the first corresponding relationship may be sent to the receiving end device by an access network device.

In another possible example, the first information may include an index of an MCS employed by the data. After the communication module 801 receives the first information, the processing module 802 may determine an index of the MCS used by the second-level scheduling signaling according to a ratio of M to N and an index of the MCS used by the data, where M is the number of the candidate MCSs and N is a set value.

Alternatively, the first information may include an index of an MCS employed by the data. The communication module 801 may further receive a second indication from an access network device accessed by the sending end device or the receiving end device, where the second indication may be used to indicate a value of N, and the processing module 802 may determine an index of an MCS used by the second-level scheduling signaling according to a ratio of M to N and an index of the MCS used by the data, where M is the number of the alternative MCSs.

When the receiving-end device is implemented, the communication apparatus may further include a structure as shown in fig. 9. For easy understanding and illustration, fig. 9 illustrates the structure of the communication apparatus 900 by taking a mobile phone as an example. As shown in fig. 9, the communication device 900 may include a processor 901, a memory 902, and a transceiver 903.

The processor 901 can be used for processing a communication protocol and communication data, controlling the communication device 900, executing a program, processing data of the program, and the like. The memory 902 may be used for storing programs and data, and the processor 901 may execute the method performed by the receiving end device in the embodiment of the present application based on the programs.

The transceiver 903 may include a radio frequency unit and an antenna. The radio frequency unit can be used for converting the baseband signal and the radio frequency signal and processing the radio frequency signal. The antenna may be used for transceiving radio frequency signals in the form of electromagnetic waves. In addition, only the rf unit can be regarded as the transceiver 903, and then the communication device 900 may include the processor 901, the memory 902, the transceiver 903, and an antenna.

In addition, the communication device 900 may also include an input/output device 904, such as a touch screen, a display screen, or a keyboard, which may be used to receive data input by a user and to output data to the user. It should be noted that some kinds of communication devices may not have input/output devices.

For example, the above communication module 801 may have a structure shown in the transceiver 903, that is, include a radio frequency unit and an antenna; alternatively, the communication module 801 may include the above radio frequency unit. The above processing module 802 may include the processor 901, or include the processor 901 and the memory 902.

The above communication apparatus 900 may also be constituted by a chip. For example, the chip contains a processor 901. In addition, the chip may further include a memory 902 and a transceiver 903, where any two of the memory 902, the transceiver 903, and the processor 901 may be coupled to each other.

The transceiver 903 may be configured to perform the steps performed by the communication module 801 when performing the method according to the embodiment of the present application. And the steps performed by the above processing module 802 are executed by the processor 901 calling a program stored in the memory 902.

As shown in fig. 10, a communication apparatus provided in an embodiment of the present application may include a communication module 1001 and a processing module 1002, where the communication module 1001 and the processing module 1002 are coupled to each other. The communication apparatus 1000 may be configured to perform the steps performed by the sending end device in the above method embodiments. The communication module 1001 may be used to support the communication device 1000 for communication, and the communication module 1001 may have a wireless communication function, for example, to communicate with another communication device by a wireless communication method. The processing module 1002 may be configured to support the communication apparatus 1000 to perform the processing actions of the sending end device in the foregoing method embodiments, including but not limited to: generate information, messages transmitted by the communications module 1001, and/or demodulate and decode signals received by the communications module 1001, etc.

In performing the steps performed by the network device in the above method embodiments, the communication module 1001 may be configured to send, to the receiving end device, first information used for determining, from one or more modulation and coding formats MCS, an MCS used by the second-level scheduling signaling.

The communication module 1001 may also send an MCS list to the receiving end device, the MCS list including information of the one or more MCSs.

In this example, the communication module 1001 may further send a first MCS indication to the receiving end device, where the first MCS indication and the first indication are used to determine an MCS used by the data.

In another possible example, the first information may include an index of an MCS used by the data, and the MCS used by the data and a ratio of M to N may be used to determine the index of the MCS used by the second level scheduling signaling, where M is the number of the candidate MCSs and N is a set value.

In addition, the first information may include an index of an MCS used by the data, and the communication module 1001 may further send a second indication to the receiving end device, where the second indication is used to determine a value of N, and the MCS used by the data and a ratio of M to N may be used to determine an index of an MCS used by the second-level scheduling signaling, where M is the number of the candidate MCSs, and N is a set value.

In addition, when the sending end device in this embodiment is a network device (e.g., network device 102), the communication apparatus may have a structure as shown in fig. 11. The communication device 1100 includes one or more Remote Radio Units (RRUs) 1110 and one or more baseband units (BBUs) (also referred to as digital units, DUs) 1120. The RRU 1110 may be referred to as a communication module, and corresponds to the communication module 1001 in fig. 10, and is configured to perform the above steps performed by the communication module 1001. The RRU 1110, which may also be referred to as a transceiver, transceiver circuitry, or transceiver, etc., may include at least one antenna 1111 and a radio frequency unit 1112. The RRU 1110 is mainly used for transceiving radio frequency signals and converting the radio frequency signals and baseband signals, for example, for sending resource indication to a terminal device. The BBU 1120 is mainly used for performing baseband processing, controlling a base station, and the like. The RRU 1110 and the BBU 1120 may be physically disposed together or may be physically disposed separately, that is, distributed base stations.

The BBU 1120 is a control center of the base station, and may also be referred to as a processing module, and may correspond to the processing module 1002 in fig. 10, and is configured to execute the steps executed by the processing module 1002. The BBU 1120 may also be used to perform baseband processing functions such as channel coding, multiplexing, modulation, spreading, and so forth. For example, the BBU 1120 may be configured to control the communication apparatus 1100 to perform an operation procedure related to the sending-end device in the above-described method embodiment, for example, generating an RRC message and the first information.

In an example, the BBU 1120 may be formed by one or more boards, and the boards may collectively support a radio access network of a single access system (e.g., an LTE network), or may respectively support radio access networks of different access systems (e.g., an LTE network, a 5G network, or other networks). The BBU 1120 also includes a memory 1121 and a processor 1122. The memory 1121 is used for storing necessary instructions and data. The processor 1122 is used to control the communication device 1100 to perform necessary actions, such as controlling the communication device 1100 to perform the operational procedures performed by the CU and/or the CU in the above-described method embodiments.

The steps performed by processing module 1002 above may be performed, for example, by processor 1122. The memory 1121 and processor 1122 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.

When the transmitting end device in this embodiment is a terminal, the communication apparatus may have a structure as shown in fig. 9. Taking a mobile phone as an example, when the method shown in the embodiment of the present application is executed by the communication device shown in fig. 9, the transceiver 903 may be configured to execute the steps executed by the communication module 1001. And the steps performed by the above processing module 1002 may be performed by the processor 901 calling a program stored in the memory 902.

Based on the same concept as the method embodiments, embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program causes the receiving end device or the sending end device to perform operations performed by the receiving end device or the sending end device in any one of the possible implementations of the method embodiments.

Based on the same concept as the method embodiments, the present application also provides a computer program product, which, when being invoked by a computer, enables the computer to implement the operations performed by the receiving end device or the sending end device in any one of the possible implementation manners of the method embodiments and the method embodiments.

Based on the same concept as the method embodiments described above, the present application also provides a chip or a chip system, which may include a processor. The chip may further include or be coupled with a memory (or a storage module) and/or a transceiver (or a communication module), where the transceiver (or the communication module) may be used to support the chip for wired and/or wireless communication, and the memory (or the storage module) may be used to store a program that is called by the processor to implement the operations performed by the receiving end device or the sending end device in any one of the possible implementations of the method embodiments and the method embodiments described above. The chip system may include the above chip, and may also include the above chip and other discrete devices, such as a memory (or storage module) and/or a transceiver (or communication module).

Based on the same concept as the method embodiment, the present application also provides a communication system, which may include the above receiving end device and/or sending end device. The communication system may be configured to implement the operations executed by the receiving end device and the sending end device in any possible implementation manner of the method embodiments and the method embodiments. Illustratively, the communication system may have a structure as shown in fig. 1 or fig. 2.

In the communication system, the sending end device may be configured to send first information to the receiving end device, and the receiving end device may be configured to receive the first information and determine, according to the first information, an MCS used by a second-level scheduling signaling from one or more modulation and coding formats MCSs, so as to implement flexible configuration of the MCS used by the second-level scheduling signaling. The second-level scheduling signaling and the first-level scheduling signaling are used for scheduling data, and the first-level scheduling signaling is sent by the sending end device.

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, and computer program products according to embodiments. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Claims

A method of communication, comprising:

receiving end equipment receives first information from sending end equipment, wherein the first information is used for determining MCS adopted by second-level scheduling signaling;

and the receiving end equipment determines the MCS adopted by the second-level scheduling signaling from one or more modulation coding formats (MCS) according to the first information.
The method of claim 1, wherein the information of the one or more MCSs is configured by an access network device or stored in the receiving device, the receiving device accessing the access network device.
The method of claim 1 or 2, wherein the method further comprises:

the receiving end device receives an MCS list from the transmitting end device, the MCS list including information of the one or more MCSs.
The method of any of claims 1-3, wherein the first information comprises a first indication, the first indication being carried in the first level scheduling signaling;

the first indication is used for indicating an index of an MCS adopted by the second-level scheduling signaling.
The method of claim 4, wherein the method further comprises:

the receiving end equipment determines that the first-level scheduling signaling does not comprise the first indication;

and the receiving terminal equipment determines the default MCS as the MCS adopted by the second-level scheduling signaling.
The method of claim 5, wherein the information of the default MCS is stored in the sending end device, or wherein the information of the default MCS is configured by an access network device, and wherein the receiving end device accesses the access network device.
The method of any of claims 4-6, wherein the method further comprises:

the receiving end equipment receives a first MCS instruction from the sending end equipment, wherein the first MCS instruction and the first instruction are used for determining the MCS adopted by data, and the data is scheduled by the first-level scheduling signaling and the second-level scheduling signaling.
The method according to any of claims 4-7, wherein the first indication is a fixed field and/or dynamic padding information in the first level scheduling signaling.
The method of any of claims 1-3, wherein the first information includes an indication of an MCS employed by data scheduled by first level scheduling signaling and the second level scheduling signaling;

the receiving end equipment determines the MCS adopted by the second-level scheduling signaling from one or more MCSs according to the first information, and the determining comprises the following steps:

and the receiving end equipment determines the MCS corresponding to the MCS adopted by the data as the MCS adopted by the second-level scheduling signaling according to a first corresponding relation, wherein the first corresponding relation comprises a corresponding relation between one or more MCSs and the alternative MCS of the data respectively, and the alternative MCS of the data comprises the MCS adopted by the data.
The method of claim 9, wherein the first correspondence is stored in the receiving end device, or wherein the first correspondence is sent by an access network device to the receiving end device, which is accessed to the access network device.
The method of any of claims 1-3, wherein the first information includes an index of an MCS employed by data scheduled by first level scheduling signaling and the second level scheduling signaling;

the receiving end equipment determines the MCS adopted by the second-level scheduling signaling from one or more MCSs according to the first information, and the determining comprises the following steps:

and the receiving end equipment determines the index of the MCS adopted by the second-level scheduling signaling according to the ratio of M to N and the index of the MCS adopted by the data, wherein M is the number of the alternative MCS, and N is a set value.
The method of any of claims 1-3, wherein the first information includes an index of an MCS employed by data scheduled by first level scheduling signaling and the second level scheduling signaling;

the method further comprises the step that the receiving end equipment receives a second instruction, wherein the second instruction is used for determining the value of the N;

the receiving end equipment determines the MCS adopted by the second-level scheduling signaling from one or more MCSs according to the first information, and the determining comprises the following steps:

and the receiving end equipment determines the index of the MCS adopted by the second-level scheduling signaling according to the ratio of M to N and the index of the MCS adopted by the data, wherein M is the number of the alternative MCS.
A method of communication, comprising:

the sending end equipment sends first information to receiving end equipment, and the first information is used for determining MCS adopted by second-level scheduling signaling from one or more modulation coding formats (MCS).
The method of claim 13, wherein the method further comprises:

the sending end equipment sends an MCS list to the receiving end equipment, wherein the MCS list comprises information of the one or more MCSs.
The method of claim 13 or 14, wherein the first information comprises a first indication, the first indication being carried in the first level scheduling signaling;

the first indication is used for indicating an index of an MCS adopted by the second-level scheduling signaling.
The method of claim 15, wherein the method further comprises:

the sending end equipment sends a first MCS instruction to the receiving end equipment, wherein the first MCS instruction and the first instruction are used for determining the MCS adopted by data, and the data is scheduled by the first-level scheduling signaling and the second-level scheduling signaling.
The method of claim 15 or 16, wherein the first indication is a fixed field and/or dynamic padding information in the first level scheduling signaling.
The method of any of claims 13 or 14, wherein the first information comprises an indication of an MCS used for data, the MCS used for the data corresponding to an MCS used for the second level scheduling signaling, and the data is scheduled by the first level scheduling signaling and the second level scheduling signaling.
The method of any of claims 13 or 14, wherein the first information comprises an index of the MCS used by the data, the MCS used by the data and a ratio of M to N for determining the index of the MCS used by the second level scheduling signaling, wherein M is the number of the alternative MCSs and N is a set value.
The method of claim 19, wherein the first information includes an index of an MCS employed by data scheduled by a first level scheduling signaling and the second level scheduling signaling;

the method further comprises the following steps:

the sending end equipment sends a second instruction to the receiving end equipment, wherein the second instruction is used for determining the value of N;

and the MCS adopted by the data and the ratio of M to N are used for determining the index of the MCS adopted by the second-level scheduling signaling, wherein M is the number of the alternative MCS, and N is a set value.
A communication apparatus, comprising a communication module for communication of the communication apparatus and a processing module for performing the method according to any one of claims 1-12 based on the communication module.
A communication apparatus, comprising a communication module for communication of the communication apparatus and a processing module for performing the method according to any one of claims 13-20 based on the communication module.