CN113728556A

CN113728556A - Communication method and device

Info

Publication number: CN113728556A
Application number: CN201980095789.4A
Authority: CN
Inventors: 毕文平; 余政; 杨育波; 王宏; 程型清
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2021-11-30
Anticipated expiration: 2039-04-30
Also published as: CN113728556B; WO2020220351A1

Abstract

A communication method and equipment are used for solving the problem of how to report CQI and control the repetition times of a channel by UE. The method comprises the following steps: the method comprises the steps that first information is determined by first equipment, and the first information is used for the type of channel state information reported by second equipment in a plurality of channel state information types; the first equipment sends a first message to the second equipment, and the first message carries first information.

Description

Communication method and device

Technical Field

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

Background

Currently, a fourth generation communication system, an evolved long term evolution-advanced (LTE-a), will continue to provide wireless communication services for its User Equipment (UE) in a short term (even a long term). In particular, enhanced machine type communication (eMTC) systems and other evolved systems (e.g., futher eMTC (FeMTC), Even futher eMTC (efmtc), and Additional MTC (AMTC)) are systems derived on the LTE basis, and the eMTC systems and other evolved systems operate in the LTE system and in the LTE frequency band. In order to save power consumption and reduce cost, the operating bandwidth of the eMTC terminal may be generally smaller than that of the LTE system, for example, the operating bandwidth of the eMTC terminal may be a narrowband NB, where one NB includes 6 consecutive Physical Resource Blocks (PRBs), and one PRB includes 12 Subcarriers (SCs). Because of its low power consumption, long dormancy, eMTC UE's battery life is longer, expecting about 10 years.

A new channel state information reporting mechanism is introduced in Rel-16, that is, the repetition times of the control channel are reported according to downlink measurement. However, in the eMTC of Rel-13, reporting of a Channel Quality Indicator (CQI) has been introduced for a coverage enhancement mode a or coverage enhancement level 0 or coverage enhancement level 1 (cemoda) user, and how a UE reports the above two kinds of channel state information is an unsolved problem.

Disclosure of Invention

The embodiment of the application provides a communication method and equipment, which are used for solving the problem of how to report CQI and control the channel repetition times by UE.

In a first aspect, an embodiment of the present application provides a communication method, including: the method comprises the steps that first information is determined by first equipment, and the first information is used for indicating the type of channel state information reported by second equipment, wherein the type is one of a plurality of channel state information types; the first device sends a first message to the second device, wherein the first message carries (or comprises or contains) first information. In the embodiment of the application, by defining the relationship between the two channel state information of the CQI and the repetition times and indicating how the second device reports the two channel state information of the CQI and the repetition times through the first information, the accuracy of reporting the channel state information can be improved, so that the scheduling accuracy can be improved, and the resource utilization rate can be improved.

In a possible design, the first message may further carry second information, where the second information is used to trigger the second device to report channel state information corresponding to the indicated type. The design can carry the first information and the second information through one message, thereby saving signaling resources.

In a possible design, the first device may send a second message to the second device, where the second message carries second information, and the second information is used to trigger the second device to report channel state information. The design can improve the flexibility by decoupling the transmission of the first information and the second information.

In one possible design, the first message may further carry third information, where the third information is used to indicate a bandwidth and/or a bandwidth location corresponding to the channel state information. By the design, the first information and the third information can be carried by one message, so that signaling resources can be saved.

In one possible design, the first device may send a third message to the second device, where the third message carries third information, and the third information is further used to indicate a bandwidth and/or a bandwidth location corresponding to the channel state information. The design can improve the flexibility by decoupling the transmission of the first information and the third information.

In one possible design, the third message may also carry the second information.

In a possible design, the first message is a Random Access Response message media Access control layer protocol data unit (Random Access Response MAC PDU), or the first message is a Random Access Response message media Access control layer protocol data unit (Random Access Response MAC CE).

In one possible design, the second message and/or the third message may also be a Random Access Response MAC PDU or a Random Access Response MAC CE.

In one possible design, the first information may be indicated by a subheader of a MAC header field of the first message.

In one possible design, the subheader includes an E/T/R/R/BI field, and the first information may be indicated by a first and/or second R field of the subheader, or the first and/or second R field of the subheader may be used to indicate the first information.

In one possible design, the second information may also be indicated by the first and/or second R field of the sub-header, or the first and/or second R field of the sub-header may be used to indicate the second information.

In one possible design, the sub header includes an E/T/RAPID field, and the first information may be indicated by the RAPID field of the sub header, or the RAPID field of the sub header may be used to indicate the first information.

In one possible design, the second information may be indicated by a RAPID field of the sub header, or the RAPID field of the sub header may be used to indicate the second information.

In one possible design, the first message may indicate a MAC CE or a MAC PDU.

In one possible design, the second message and/or the third message may also be indicated by a MAC CE or a MAC PDU. The MAC CE and the MAC PDU may be transmitted by the first device for the connected second device.

In one possible design, a Logical Channel Identifier (LCID) field of a subheader of an uplink-shared channel (UL-SCH)/downlink-shared channel (DL-SCH) MAC CE or a subheader of an UL-SCH/DL-SCH MAC PDU may be the first value.

In one possible design, the subheader of the UL-SCH/DL-SCH MAC PDU includes a R/F2/E/LCID field, and the first information may be indicated by at least one of the R/F2/E fields of the subheader of the UL-SCH/DL-SCH MAC PDU.

In one possible design, the first message may be control information.

In one possible design, the second message and/or the third message may also be control information.

In one possible design, the first information or the second message may be indicated by a channel state information request, CSI, field of the first message.

In one possible design, the plurality of channel state information types may include a first type and a second type; or, the plurality of channel state information types include a first type, a second type and a third type; wherein the first type is a channel quality indication, the second type is a channel repetition number, and the third type is a channel quality indication and a channel repetition number.

In a second aspect, an embodiment of the present application provides a communication method, including: the method comprises the steps that a second device receives a first message sent by a first device, wherein the first message carries first information, the first information is used for indicating the type of channel state information reported by the second device, and the type is one of a plurality of channel state information types; and the second equipment reports the channel state information corresponding to the type indicated by the first information. In the embodiment of the application, by defining the relationship between the two channel state information, namely the CQI and the repetition number, the second device can determine how to report the two channel state information, namely the CQI and the repetition number, according to the first information, and can improve the accuracy of reporting the channel state information, so that the scheduling accuracy can be improved, and the resource utilization rate can be improved.

In a possible design, the second device may receive a second message sent by the first device, where the second message carries second information, and the second information is used to trigger the second device to report channel state information. The design can improve the flexibility by decoupling the transmission of the first information and the second information.

In a possible design, the second device may receive a third message sent by the first device, where the third message carries third information, and the third information is further used to indicate a bandwidth and/or a bandwidth location corresponding to the channel state information. The design can improve the flexibility by decoupling the transmission of the first information and the third information.

In one possible design, the subheader includes an E/T/R/R/BI field, and the first information may be included in a first and/or second R field of the subheader or used to indicate the first information.

In one possible design, the first message may indicate a MAC CE or a MAC PDU.

In one possible design, the logical channel identification, LCID, field of the subheader of the UL-SCH/DL-SCH MAC CE or the subheader of the UL-SCH/DL-SCH MAC PDU may be a first value.

In one possible design, the UL-SCH/DL-SCH MAC PDU includes a R/F2/E/LCID field and the first information may be indicated by at least one of the R/F2/E fields of the UL-SCH/DL-SCH MAC PDU.

In one possible design, the first message may be control information.

In one possible design, the first information may be indicated by a channel state information request, CSI, request field of the first message.

In a third aspect, an embodiment of the present application provides a communication method, including: the method comprises the steps that first information is determined by first equipment, the first information is used for triggering second equipment to report channel state information, and/or the first information is used for indicating the content of the channel state information reported by the second equipment; the content of the channel state information includes the type of the channel state information reported by the second device in the multiple channel state information types, or the content of the channel state information includes the type of the channel state information reported by the second device in the multiple channel state information types and frequency domain information corresponding to the channel state information; the first device sends the first information to the second device. In the embodiment of the application, by defining the relationship between the two channel state information, namely the CQI and the repetition number, the second device can determine how to report the two channel state information, namely the CQI and the repetition number, according to the first information, and can improve the accuracy of reporting the channel state information, so that the scheduling accuracy can be improved, and the resource utilization rate can be improved.

In a possible design, if the first information is used to trigger the second device to report the channel state information, the first device may further determine second information, where the second information is used to indicate content of the channel state information reported by the second device, and send the second information to the second device. The design can improve the flexibility by decoupling the transmission of the first information and the second information.

In a possible design, if the first information is used to indicate content of channel state information reported by the second device, the first device may further determine third information, where the third information is used to trigger the second device to report the channel state information; the first device sends the third information to the second device. The design can improve the flexibility by decoupling the transmission of the first information and the third information.

In a possible design, if the content of the channel state information includes a type of the channel state information reported by the second device among the multiple channel state information types, the first device may further determine fourth information, where the fourth information is used for frequency domain information corresponding to the channel state information reported by the second device; the first device sends the fourth information to the second device. The design can improve the flexibility by decoupling and sending the first information and the fourth information.

In one possible design, the frequency domain information corresponding to the channel state information may include at least one of the following information: the frequency domain bandwidth corresponding to the channel state information and the frequency domain position corresponding to the channel state information.

In one possible design, the plurality of channel state information types may include a first type and a second type; or, the plurality of channel state information types include a first type, a second type and a third type; wherein the first type is a channel quality indication, the second type is a number of repetitions of the first channel, and the third type is a channel quality indication and a number of repetitions of the first channel.

In one possible design, the second message, the third message, or the fourth message may also be a Random Access Response MAC PDU or a Random Access Response MAC CE.

In one possible design, the subheader includes E/T/R/R/BI fields, and the first information may be included in a first and/or second R field of the subheader.

In one possible design, the subheader includes an E/T/RAPID field, and the first information may be indicated by the RAPID field of the subheader.

In one possible design, the first message may indicate a MAC CE or a MAC PDU.

In one possible design, the second message, the third message, or the fourth message may also be indicated by a MAC CE or a MAC PDU. The MAC CE and the MAC PDU may be transmitted by the first device for the connected second device.

In one possible design, the first message may be control information.

In one possible design, the second message, the third message, or the fourth message may also be control information.

In a fourth aspect, an embodiment of the present application provides a communication method, including: the second device receives first information sent by the first device, wherein the first information is used for triggering the second device to report the channel state information, and/or the first information is used for indicating the content of the channel state information reported by the second device; the content of the channel state information includes the type of the channel state information reported by the second device in the multiple channel state information types, or the content of the channel state information includes the type of the channel state information reported by the second device in the multiple channel state information types and frequency domain information corresponding to the channel state information; and the second equipment reports the channel state information according to the first information. In the embodiment of the application, by defining the relationship between the two channel state information, namely the CQI and the repetition number, the second device can determine how to report the two channel state information, namely the CQI and the repetition number, according to the first information, and can improve the accuracy of reporting the channel state information, so that the scheduling accuracy can be improved, and the resource utilization rate can be improved.

In a possible design, if the first information is used to trigger the second device to report the channel state information, the second device may further receive a second message, where the second message carries second information, and the second information is used to indicate content of the channel state information reported by the second device. The design can improve the flexibility by decoupling the transmission of the first information and the second information.

In a possible design, if the first information is used to indicate content of channel state information reported by the second device, the second device may further receive a third message, where the third message carries third information, and the third information is used to trigger the second device to report the channel state information. The design can improve the flexibility by decoupling the transmission of the first information and the third information.

In a possible design, if the content of the channel state information includes a type of the channel state information reported by the second device among the plurality of channel state information types, the second device may further receive a fourth message, where the fourth message carries fourth information, and the fourth information is used for frequency domain information corresponding to the channel state information reported by the second device. The design can improve the flexibility by decoupling and sending the first information and the fourth information.

In one possible design, the first message may indicate a MAC CE or a MAC PDU.

In one possible design, the first message may be control information.

In a fifth aspect, the present application provides an apparatus, which may be the first device, or the second device, and may also be a chip. The apparatus has the functionality to implement any of the embodiments of the first aspect, or the second aspect, or the third aspect, or the fourth aspect described above. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a sixth aspect, an apparatus is provided, comprising: a processor, a communication interface, and a memory. The communication interface is used for transmitting information, and/or messages, and/or data between the device and other devices. The memory is configured to store computer executable instructions, and when the apparatus runs, the processor executes the computer executable instructions stored in the memory to enable the apparatus to perform the communication method according to any one of the first aspect or the first aspect, or the communication method according to any one of the second aspect or the second aspect, or the communication method according to any one of the third aspect or the third aspect, or the communication method according to any one of the fourth aspect or the fourth aspect.

In a seventh aspect, the present application further provides a system comprising the first apparatus in any embodiment of the first aspect, and the second apparatus in any embodiment of the second aspect. Alternatively, the system comprises the first device in any embodiment of the third aspect and the second device in any embodiment of the fourth aspect.

In an eighth aspect, the present application further provides a computer-readable storage medium having stored therein instructions, which, when run on a computer, cause the computer to perform the method of the above aspects.

In a ninth aspect, the present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above aspects.

Drawings

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

fig. 2 is a schematic flow chart of a random access channel according to an embodiment of the present disclosure;

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

fig. 4 is a schematic diagram of fields included in a subheader of a MAC header according to an embodiment of the present application;

fig. 5 is a schematic diagram of fields included in a subheader of another MAC header according to an embodiment of the present application;

fig. 6A is a schematic diagram of fields included in a subheader of a MAC PDU according to an embodiment of the present application;

fig. 6B is a schematic diagram of scheduling multiple transport blocks by using a DCI according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application;

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

Detailed Description

Embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The communication method provided by the present application may be applied to various communication systems, for example, internet of things (IoT), narrowband band internet of things (NB-IoT), Long Term Evolution (LTE), fifth generation (5G) communication system, LTE and 5G hybrid architecture, 5G New Radio (NR) system, global system for mobile communication (GSM), mobile communication system (universal mobile telecommunications system, UMTS), Code Division Multiple Access (CDMA) system, and a new communication system appearing in future communication development. The communication method provided by the embodiment of the present application can be adopted as long as there exists a communication system in which one entity can transmit control information for scheduling a transport block and transmit and receive the transport block, and another entity can receive control information for scheduling a transport block and receive and transmit the transport block.

The terminal device referred to in the embodiments of the present application is a device providing voice and/or data connectivity to a user, for example, a handheld device, a vehicle-mounted device, and the like having a wireless connection function. The terminal device may also be other processing devices connected to the wireless modem. A terminal device may communicate with one or more core networks through a Radio Access Network (RAN). The terminal device may also be referred to as a wireless terminal, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), a user device (user device), or a user equipment (user equipment), etc. The terminal equipment may be mobile terminals such as mobile telephones (or so-called "cellular" telephones) and computers with mobile terminals, e.g. portable, pocket, hand-held, computer-included or car-mounted mobile devices, which exchange language and/or data with a radio access network. For example, the terminal device may be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or the like. Common terminal devices include, for example: the mobile terminal includes a mobile phone, a tablet computer, a notebook computer, a handheld computer, a Mobile Internet Device (MID), and a wearable device, such as a smart watch, a smart bracelet, a pedometer, and the like, but the embodiment of the present application is not limited thereto.

The network device related in the embodiment of the present application may be configured to perform interconversion between a received air frame and a network protocol (IP) packet, and serve as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network and the like. The network device may also coordinate management of attributes for the air interface. For example, the network device may be a base station (BTS) in a global system for mobile communication (GSM) or Code Division Multiple Access (CDMA), a base station (NodeB) in a Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB) or e-NodeB in LTE, a new radio controller (NR controller), a gNode B (gNB) in a 5G system, a centralized network element (centralized unit), a new radio base station, a radio remote module, a micro base station, a relay (relay), a distributed network element (distributed unit), a Transmission Point (TP), or any other radio access point (TRP), the embodiments of the present application are not limited thereto. The network device may cover 1 or more cells.

Referring to fig. 1, a communication system provided in the embodiment of the present application includes a network device and six terminal devices, i.e., UE 1-UE 6. In the communication system, the UEs 1 to 6 may transmit uplink data to the network device, and the network device may receive the uplink data transmitted by the UEs 1 to 6. Further, the UEs 4 through 6 may also form one sub-communication system. The network device may send downlink information to the UE1, the UE2, the UE3, and the UE5, and the UE5 may send downlink information to the UE4 and the UE6 based on a device-to-device (D2D) technology. Fig. 1 is merely a schematic diagram, and does not specifically limit the type of communication system, and the number, types, and the like of devices included in the communication system.

The network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

In a communication system, a UE may be in three states: idle (idle) state, inactive (inactive) state, and connected (connected). The connected UE can communicate with the base station through base station dynamic scheduling to transmit data, but for idle UE, it cannot transmit data through base station dynamic scheduling, and needs to perform random access first, and can transmit data after establishing RRC connection, or carries a small amount of uplink data in message 3(MSG3) in the random access process. The Inactive state can be regarded as an intermediate state of the two states, and the UE and the core network retain the context of a Radio Resource Control (RRC) message in the connected state, so that the connected state can be entered at a faster speed than the idle state. According to the current specification of the LTE protocol, when the UE transits from the RRC connected state to the idle state, the RRC configuration message is not retained, but when transits from the connected state to the inactive state, the context of the RRC message is retained.

As shown in fig. 2, the contention-based random access procedure for idle UEs is as follows:

s201, the UE sends message 1 to the base station (MSG 1). Wherein, MSG1 is a Preamble (Random Access Preamble on RACH in uplink).

S202, the base station sends message 2 to the UE (MSG 2).

Wherein, MSG2 is a random Access Response (random Access Response) generated by MAC on DL-SCH. MSG2 carries a Timing Advance (TA) adjustment. The base station blindly detects a Preamble in a Physical Random Access Channel (PRACH), if the base station detects a random Access Preamble sequence code (from Access Preamble), the Preamble is reported to the MAC, and a random Access response (MSG2) of the MAC is fed back in a downlink shared channel PDSCH in a random Access response window.

S203, the UE sends MSG3 to the base station.

The UE may obtain uplink synchronization according to the TA adjustment amount in the MSG2, and transmit MSG3 in the uplink resource allocated by the base station for subsequent data transmission. At present, the MSG3 does not support the uplink downlink channel state information, and the Rel-15 supports the advanced data transmission in the MSG 3.

S204, the base station sends message 4 to the UE (MSG 4). Among other things, MSG4 may carry contention resolution for the DL. The base station and the UE finally complete contention resolution through MSG 4.

According to the contention-based random access process of the idle-state UE, the quality information of the downlink channel cannot be reported in the MSG 3. In order to improve the accuracy of scheduling information and data after MSG3 and improve the utilization rate of system resources, standardized idle-state UEs are required to report downlink channel state quality information in LTE Rel-16, and there is no method for reporting downlink channel state quality information for idle-state UEs at present. For reporting the channel state information of the idle UE, a possible solution is that a base station may configure the reported channel state information through a System Information (SI).

When a base station configures reporting channel state information through an SI, all UEs in a cell report the channel state information after the SI triggers the reporting of the channel state information, which may bring a great limitation to a system, for example, if the system has limited resources, the system cannot report, but the UE has already measured a channel at this time, resulting in waste of UE power. In addition, when the channel state information of the UE is better, the UE does not need to report the channel state information, but the UE with better channel state information still reports the channel state information under the trigger of the SI, thereby wasting the power of the UE.

In addition, aiming at the connected UE, a new channel state information reporting mechanism is introduced into Rel-16, namely, the repetition times of the control channel is reported according to downlink measurement. However, in eMTC of Rel-13, reporting of Channel Quality Indicator (CQI) has been introduced for coverage enhancement mode a or coverage enhancement level 0 or coverage enhancement level 1 (cemoda) users. At present, in the prior art, the relationship between the cqi (channel quality indicator) and the repetition number reporting of the control channel is not defined or specified, so that if the reporting is performed independently, information redundancy is caused, and system resources and user power are wasted.

Embodiments of the present application provide a communication method and device, which are used to solve the problem in the prior art how to report the two types of channel state information by a UE. The method and the device are based on the same inventive concept, and because the principles of solving the problems of the method and the equipment are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

In the embodiments of the present application, the plural number means two or more.

It is to be understood that the terms "first," "second," and the like in the description of the present application are used for descriptive purposes only and not for purposes of indicating or implying relative importance, nor for purposes of indicating or implying order.

Referring to fig. 3, a flowchart of a communication method provided in the present application is shown. The method can be applied to the communication system shown in fig. 1, and comprises the following steps:

s301, a first device determines first information, wherein the first information is used for indicating a type of channel state information reported by a second device; the type is one of a plurality of channel state information types.

The first device may be a network device, and the second device may be a terminal device. Alternatively, the second device may be a network device, and the first device may be a terminal device. Alternatively, the first device may be a device with transmitting capabilities and the second device may be a device with receiving capabilities.

An exemplary illustration, the plurality of channel state information types includes a first type and a second type; or, the plurality of channel state information types include a first type, a second type and a third type; wherein the first type is a channel quality indication, the second type is a channel repetition number, and the third type is a channel quality indication and a channel repetition number. Further, the channel repetition number may refer to a channel repetition number of the first channel. The first channel may include a physical downlink data channel, or a physical uplink data channel, or a physical downlink control channel, or a physical uplink control channel, or a reference physical downlink data channel, or a reference physical uplink data channel, or a reference physical downlink control channel, or a reference physical uplink control channel, or the like.

In addition, the channel state information type may be Reference Signal Received Quality (RSRQ) or Reference Signal Received Power (RSRP). Therefore, the channel state information type further includes one or a combination of the following: CQI, number of repetitions of the first channel, RSRQ, RSRP. The type of channel state information may be used to indicate which kind or kinds of channel state information the second device reports. The plurality of channel state types may thus be any combination of CQI, number of repetitions of the first channel, RSRQ, RSRP, such as including fourth type, fifth type. A sixth type … …, and so on. For example, the fourth type may be RSRQ, the fifth type is the number of repetitions of the first channel and RSRP, the sixth type is CQI, RSRQ, and RSRP, and so on.

S302, the first device sends a first message to the second device, and the first message carries the first information. Correspondingly, the second device receives the first message sent by the first device.

And S303, the second equipment reports the channel state information corresponding to the type indicated by the indication according to the first information.

In the embodiment of the application, by defining the relationship between the two channel state information of the CQI and the repetition times and indicating how the second device reports the two channel state information of the CQI and the repetition times through the first information, the accuracy of reporting the channel state information can be improved, so that the scheduling accuracy can be improved, and the resource utilization rate can be improved.

In addition, the first device may further determine second information and/or third information, where the second information is used to trigger (or may also be understood as an indication) the second device to report channel state information corresponding to the indicated type. The third information is used for indicating the bandwidth and/or the bandwidth position corresponding to the channel state information.

In this embodiment, the bandwidth may refer to channel state information that is wideband, narrowband, or subband, where the wideband may refer to the entire system bandwidth, or may refer to multiple narrowbands. The bandwidth position may refer to a frequency domain position, and specifically to a frequency domain position or a number (or index) of frequency domain positions where the narrowband or subband (selected by the second device) is located.

In a specific implementation, the first information, the second information, and the third information may be sent through one message, that is, the first device sends a message 1 to the second device, where the message 1 carries the first information, the second information, and the third information, and at this time, the message 1 may correspond to the first message.

Or, the first information, the second information, and the third information may be sent through two messages, that is, the first device sends a message 1 and a message 2 to the second device, respectively, where the message 1 may carry the first information, and the message 2 may carry the second information and the third information, and at this time, the message 1 may correspond to the first message, and the message 2 may correspond to the second message. Alternatively, the message 1 may carry the first information and the second information, and the message 2 may carry the third information, in which case the message 1 may correspond to the first message, and the message 2 may correspond to the third message. Or, the message 1 may carry the first information and the third information, and the message 2 may carry the second information, in which case the message 1 may correspond to the first message, and the message 2 may correspond to the second message.

Or, the first information, the second information, and the third information may be sent through three messages, that is, the first device sends a message 1, a message 2, and a message 3 to the second device, respectively, where the message 1 may carry the first information, the message 2 may carry the second information, and the message 3 may carry the third information. In this case, message 1 may correspond to the first message, message 2 may correspond to the second message, and message 3 may correspond to the third message.

It should be understood that the messages in the above description are only exemplary, and the names of the messages and the sending sequence are not particularly limited.

In some embodiments, the first information and/or the third information may also be predefined by the second device, so that the second device may report the channel state information according to the predefined first information and/or third information when receiving the second information.

If the first information is predefined, the first device may not send the first information. The second device may determine the type of channel state information from the predefined first information.

If the third information is predefined, the first device may not send the third information. The second device may determine a bandwidth and/or a bandwidth location corresponding to the channel state information according to predefined third information.

In an exemplary illustration, at least one of the first message, the second message, and the third message may be a Random Access Response message media Access control layer protocol data unit (Random Access Response MAC PDU), or the first message may be a Random Access Response message media Access control layer protocol data unit control element (Random Access Response MAC CE).

As a possible implementation, the first message, the second message, and the third message may also be Radio Resource Control (RRC) messages.

In an exemplary illustration, a part of the first information, the second information, and the third information may be transmitted through a Random Access Response MAC PDU, and another part may be transmitted through an RRC message. For example, the first message is transmitted through a Random Access Response MAC PDU, the second message and the third message are transmitted through an RRC message, and so on. It should be understood that this is merely an exemplary illustration, and the three pieces of information are specifically transmitted by which kind of information, and this is not particularly limited here.

Or the first information, the second information and the third information are sent through a Random Access Response MAC PDU, the second information is sent through an RRC message, and the third information is predefined. Specifically, the first information, the second information, and the third information correspond to which information of the first information, the second information, and the third information, and are not limited specifically here.

Alternatively, a part of the first information, the second information, and the third information may be transmitted through an RRC message, and another part may be predefined. For example, the second information is sent by RRC message, the first information and the third information are predefined, and so on. It should be understood that this is merely an exemplary illustration, and the three pieces of information are specifically transmitted by which kind of information, and this is not particularly limited here.

In the following, the description is given by taking an example that the Random Access Response MAC PDU indicates the first information, and the method for indicating the second information or the third information by the Random Access Response MAC PDU is similar, and the description of the similar parts is omitted.

Further, the first information may be indicated by a MAC header field (MAC header) of a Random Access Response MAC PDU. Specifically, the first information may be indicated by a subheader (subheader) of a MAC header of the Random Access Response MAC PDU. The subheader may be the last subheader in the MAC headers of the Random Access Response MAC PDU.

Further, the subheader may include E/T/R/R/BI fields, as shown in FIG. 4. The first information is contained in a first and/or second R field of the subheader.

The specific content of the first information may be indicated by a value status of a first and/or a second R field of the sub-header, for example, if the specific content is indicated by a field (the first or the second R field of the sub-header), a type one may be indicated when the field takes a value of 0, and a type two may be indicated when the field takes a value of 1. If indicated by two fields (the first and second R fields of the subheader), type one may be indicated when the field takes a value of 00, and type two may be indicated when the field takes a value of 01. Type three is indicated when the field value is 10, and type four is indicated when the field value is 11. It should be noted that the above field bit values and their indicated meanings are only examples, and all the fields and the indicated contents are protected by this application as long as they are the same.

In a specific implementation, when the first information and the second information are transmitted through one message, the first information and the second information may be indicated in combination. For example, the first information and the second information may be indicated by one field (e.g., a first R field of the sub-header or a second R field of the sub-header). Specifically, the field value may be used to indicate that the user does not send the channel state information when the field value is 0, and the field value is 0 to indicate that the user sends the first channel state information. Of course, it may also be used to indicate that the user does not send the channel state information when the field value is 1, and to indicate that the user sends the first channel state information when the field value is 1.

Alternatively, the first information and the second information may be indicated by two fields (e.g., a first R field and a second R field of the subheader). Specifically, the two fields may be used to indicate that the user does not send the channel state information when the two fields take a value of 00, indicate that the user sends the first channel state information when the two fields take a value of 01, indicate that the user sends the second channel state information when the two fields take a value of 10, and indicate that the user sends the first channel state information and the second channel state information when the two fields take a value of 11. It should be noted that the above field bit values and their indicated meanings are only examples, and all the fields and the indicated contents are protected by this application as long as they are the same.

Alternatively, the subheader may also include an E/T/RAPID field, as shown in fig. 5, and the first information may be indicated by the RAPID field of the subheader.

Wherein the PAPID may be the same as the PAPID of the first subheader in the MAC headers of the Random Access Response MAC PDU. At this time, the second devices corresponding to all the papis in the MAC header of the Random Access Response MAC PDU may be instructed to report a certain type of channel state information (e.g., type one, that is, the second devices corresponding to all the papis are instructed to report CQI, etc.).

Optionally, when the PAPID is the same as the PAPID of the subheader with index k (which may also be referred to as subheader k), the second device corresponding to the PAPID of the subheader with index k may be instructed to send a certain type of channel state information (for example, if the type three is indicated, the second device corresponding to the PAPID of the subheader with index k is instructed to send CQI and the number of times of repetition of the first channel).

If the PAPID is the same as the PAPIDs of the plurality of subheaders, the second devices of the PAPIDs of the plurality of subheaders can be instructed to report the channel state information of the certain type respectively.

Optionally, the subheader carrying the first information may not have a corresponding Media Access Control (MAC) Random Access Response (RAR) or MAC Control Element (CE), or the size of the MAC RAR or MAC CE corresponding to the subheader is fixed to 0 bit.

In another exemplary illustration, at least one of the first message, the second message, and the third message may also be an uplink-shared channel (UL-SCH)/downlink-shared channel (DL-SCH) MAC Protocol Data Unit (PDU), or UL/DL SCH MAC CE, or a MAC Protocol Data Unit (PDU), or a MAC CE.

Wherein the first information may be indicated by a subheader of the MAC CE or a subheader of the MAC PDU.

Further, a Logical Channel Identification (LCID) field of a subheader of the MAC CE or a subheader of the MAC PDU may be a first value. Illustratively, the first value may be: 10001 or 01011-01111.

Illustratively, the subheader of the MAC PDU may include an R/F2/E/LCID field, and the first information is indicated by at least one of the R/F2/E fields of the MAC PDU as shown in FIG. 6A.

The specific content of the first information may be indicated by a value status of at least one field in the R/F2/E field of the sub-header, for example, if the specific content is indicated by a field (R/F2/E field of the sub-header), type one may be indicated when the field takes a value of 0, and type two may be indicated when the field takes a value of 1. If the indication is made by two fields (any two fields of R/F2/E fields of the subheader), type one may be indicated when the field takes a value of 00, and type two may be indicated when the field takes a value of 01. Type three is indicated when the field value is 10, and type four is indicated when the field value is 11. If indicated by three fields (R, F2 of the subheader, and E field), type one may be indicated when the field takes a value of 000, and type two may be indicated when the field takes a value of 011. The field value of 101 indicates type three, the field value of 111 indicates type four, and other types can be indicated when the field value is in other value states, which are not listed one by one here. It should be noted that the above field bit values and their indicated meanings are only examples, and all the fields and the indicated contents are protected by this application as long as they are the same.

In a specific implementation, when the first information and the second information are transmitted through one message, the first information and the second information may be indicated in combination. For example, the first information and the second information may be indicated by one field, such as an R/F2/E field of a subheader of the MAC PDU. Specifically, the field may be used to indicate that the user does not send the channel state information when the field takes a value of 0, and may be used to indicate that the user sends the first channel state information when the field takes a value of 1.

Alternatively, the first information and the second information may be indicated by two fields (e.g., any two fields of R/F2/E fields of a subheader of the MAC PDU). The two fields may be used to indicate that the user does not send the channel state information when the two fields take a value of 00, to indicate that the user sends the first channel state information when the two fields take a value of 01, to indicate that the user sends the second channel state information when the two fields take a value of 10, and to indicate that the user sends the first channel state information and the second channel state information when the two fields take a value of 11.

Alternatively, the first information and the second information may be indicated by three fields (R, F2 of the sub-header, and E field), specifically, different value states of the three fields may indicate different channel state information types, which is not illustrated here.

It should be noted that the above field bit values and their indicated meanings are only examples, and all the fields and the indicated contents are protected by this application as long as they are the same.

In yet another exemplary illustration, at least one of the first message, the second message, and the third message may be control information.

Further, the first information is indicated by a first field of the first message. For example, the first field may be a channel state information request (CSI request) field.

The second information may also be indicated by the first field. The specific indication manner is similar to the manner in which the first field indicates the first information, and is not described herein again.

Specifically, different value states of the field may indicate different channel state information types, for example, a first value state of the field is used to indicate type one (i.e., CQI), and a second value state is used to indicate type two (i.e., the number of repetitions of the first information). Or, the field indicates type one or type two for the first value state (i.e., indicates that the second device reports CQI or the number of repetitions of the first information), and indicates type three for the second value state (i.e., indicates that the second device reports CQI and the number of repetitions of the first channel). It should be noted that the above field bit values and their indicated meanings are only examples, and all the fields and the indicated contents are protected by this application as long as they are the same.

In a specific implementation, the first field may further indicate that channel state information is not reported. For example, the first value status of the first field is used to indicate that the user does not report channel state information, or does not include channel state information. An exemplary first value state may be that all bits take a value of 0.

As a possible embodiment, when the first information and the second information are transmitted through one message, the first information and the second information may be indicated in combination. For example, the first information and the second information may be indicated by different value states of the first field. If the first field is in the first state, the user is instructed not to send the channel state information, if the first field is in the second state, the user is instructed to send the channel state information of type one, and so on. Here, when the user is instructed to report the channel state information, the type of the reported channel state information may be predefined, or may be indicated by the first field.

It should be understood that the first information and the third information may also be combined to perform an indication, and the third information in the second information field may also be combined to perform an indication, and of course, the first information, the second information, and the third information may also be combined to perform an indication, where a specific indication manner is similar to a manner of the combined indication of the first information and the second information, and specific reference may be made to the related description of the combined indication of the first information and the second information, and the similar points are not repeated.

In addition, currently, data transmission of a user is scheduled and transmitted through control information sent by a base station. In a communication system, a Downlink Control Information (DCI) is usually used to schedule a transport block or schedule a transport block carried by a data channel. The data channel may be a physical downlink data channel or a physical uplink data channel.

For a machine type communication user, such as eMTC, since it is in an area with poor coverage, both control information and data information need to be repeated for a certain number of times to reach a certain coverage. When the user data is more or more regular, in order to reduce the overhead of DCI transmission and save transmission resources, one DCI may be used to schedule a plurality of data channels, or one DCI may be used to schedule a plurality of transmission blocks. As shown in fig. 6B, a schematic diagram of scheduling multiple transport blocks for one DCI.

When one DCI schedules a plurality of transport blocks or schedules a plurality of data channels, if the number of repetitions is too large and the transport blocks are transmitted continuously, a large number of resources may be occupied by one user for a long period of time, and at this time, other users cannot schedule the resources, which may have a great influence on the scheduling of other users. Therefore, a transmission interval can be introduced between a plurality of transmission blocks scheduled by one DCI, and more flexibility can be brought to the scheduling of other users.

In the prior art, after configuration through higher layer signaling, transmission intervals between multiple Transport Blocks (TBs) are enabled or disabled. But higher layer signaling is semi-static and inflexible.

Based on this, the embodiments of the present application provide a communication method, which is used to solve the problem of resource waste when one DCI schedules multiple transport blocks or schedules multiple data channels. Specifically, the second device receives fourth information and control information sent by the first device, where the control information carries fifth information. The second device determines whether to perform interval transmission according to the fourth information and the fifth information. The fourth information is configured by the base station through high-level signaling, and can also be carried by control information. The fourth information is for enabling or disabling the transmission interval.

Optionally, the fifth information may be indicated by the first field and/or the second field in the control information, so that the second device may determine whether to perform interval transmission according to the fourth information and the first field and/or the second field in the control information.

Illustratively, the fifth information is indicated by a first field, where the first field may be used to indicate the number of scheduled TB blocks, and when the number of scheduled TB blocks is greater than K, the second device determines to transmit at intervals, otherwise, continuously transmits.

Or, the fifth information is indicated by a second field, where the second field may be a repetition number, and when the repetition number is greater than M, the second device determines to perform interval transmission, otherwise, the second device performs continuous transmission, where the repetition number may be a data channel repetition number or a control channel repetition number.

Or, the fifth information is indicated by a first field and a second field, where the first field is the number of scheduled TBs, the second field is the number of repetitions, and when the number of TBs × the number of repetitions is greater than N, the second device determines to transmit at intervals, otherwise, the second device continuously transmits, where the number of repetitions may be the number of repetitions of the data channel or the number of repetitions of the control channel.

In some embodiments, when a higher layer configures or enables Hybrid Automatic Repeat reQuest bundling (HARQ bundling), it may implicitly indicate that the DCI is multi-TB scheduling according to a first mode, which may be full new transmission or full retransmission, where Hybrid Automatic Repeat reQuest bundling may also be understood as Hybrid Automatic Repeat reQuest-successful transmission acknowledgement bundling (HARQ-ACK bundling) or spatial bundling.

In another communication method provided in the embodiment of the present application, the first device may indicate sixth information, where the sixth information is used to indicate the second device to perform information transmission on the first resource in a rate matching manner (or to perform rate matching around the first resource), or indicate the second device to perform puncturing (puncturing) on the first resource. The first resource may be a frequency domain resource of a first system, and the first system may be an LTE system.

If the first resource includes N subcarriers, or if the RB of the first resource and the RB of the second resource differ by N subcarriers, where the second resource is a frequency domain resource of a second system, the second system may be an NR system. When N is greater than K, the second device may be instructed to perform information transmission via the second resource (which may be the same as or a part of the first resource) in a rate matching manner, or, when N is less than or equal to K, the second device performs puncturing on the first resource.

In one exemplary illustration, the second device determines a number of repetitions and/or an MCS and/or a TBS based on the first information when the first channel includes the first resource. And when the first channel does not contain the first resource, the second equipment determines at least one of the repetition number, the MCS, the TBS and the maximum repetition number according to the seventh information and/or the eighth information. The seventh information is at least one of the configured first repetition number rmax1, the first MCS, TBS m1, and the eighth information is at least one of the configured second repetition number rmax2, the first parameter p, the configured second MCS, TBS. Wherein, if the eighth information includes the first parameter p, the final number of repetitions may be determined to be rmax1 × p, and if the eighth information includes rmax2, the final number of repetitions may be considered to be rmax 2. Here, the number of repetitions may be a data channel repetition number or a control channel repetition number. The final number of repetitions may be considered the maximum number of repetitions.

In yet another exemplary illustration, the first channel includes a first resource around which the terminal device rate matches. The second channel includes a first resource, and the terminal device performs puncturing on the first resource, or determines puncturing or rate-matching (rate-matching) according to the first information.

The first channel may be a physical downlink/uplink shared channel (phy down/uplink shared channel), and the second channel may be a machine type communication phy/uplink control channel (mac up/uplink control channel).

Based on the same inventive concept as the method embodiment, the embodiment of the present application provides a communication apparatus, which may have a structure as shown in fig. 7 and includes a processing unit 701 and a transceiver unit 702.

In a specific implementation manner, the communication apparatus may be specifically used to implement the method performed by the first device in the embodiments shown in fig. 3 to fig. 6A, and the apparatus may be the first device itself, or may be a chip or a chip set in the first device, or a part of the chip for performing the function of the related method. The processing unit 701 is configured to determine first information, where the first information is used for a type of the channel state information reported by a second device in multiple channel state information types. A transceiving unit 702, configured to send a first message to the second device, where the first message carries the first information.

For example, the first message may further carry second information, where the second information is used to trigger the second device to report channel state information.

Or, the transceiver 702 is further configured to send a second message to the second device, where the second message carries second information, and the second information is used to trigger the second device to report channel state information.

For example, the first message may further carry third information, where the third information is further used to indicate a bandwidth and/or a bandwidth location corresponding to the channel state information.

Or, the transceiver 702 is further configured to send a third message to the second device, where the third message carries third information, and the third information is further used to indicate a bandwidth and/or a bandwidth position corresponding to the channel state information.

In an exemplary illustration, the first message may be a random access response message MAC PDU, or the first message may be a random access response message MAC CE.

Further, the first information may be indicated by a subheader of a MAC header field of the first message.

For example, the subheader includes an E/T/R/BI field, and the first information may be included in a first and/or second R field of the subheader.

Illustratively, the subheader includes an E/T/RAPID field, and the first information is indicated by the RAPID field of the subheader.

In another exemplary illustration, the first message may indicate a MAC CE or a MAC PDU.

Further, a logical channel identity, LCID, field of a subheader of the MAC CE or a subheader of the MAC PDU may be a first value.

Illustratively, the MAC PDU includes an R/F2/E/LCID field, and the first information may be indicated by at least one of the R/F2/E fields of the MAC PDU.

In yet another exemplary illustration, the first message may be control information.

Further, the first information may be indicated by a channel state information request CSI request field of the first message.

Illustratively, the plurality of channel state information types includes a first type and a second type; or, the plurality of channel state information types include a first type, a second type and a third type; wherein the first type is a channel quality indication, the second type is a number of repetitions of the first channel, and the third type is a channel quality indication and a number of repetitions of the first channel.

In another specific implementation manner, the communication apparatus may be specifically used to implement the method performed by the second device in the embodiments shown in fig. 3 to fig. 6A, and the apparatus may be the second device itself, or may be a chip or a chip set in the second device or a part of a chip for performing a function of the related method. The transceiver 702 is configured to receive first information sent by a first device, where the first information is used for a type of channel state information reported by a second device in multiple channel state information types. A processing unit 701, configured to report channel state information according to the first information.

Or, the transceiver 702 is further configured to receive a second message sent by the first device, where the second message carries second information, and the second information is used to trigger the second device to report channel state information.

Or, the transceiver 702 is further configured to receive a third message sent by the first device, where the third message carries third information, and the third information is further used to indicate a bandwidth and/or a bandwidth position corresponding to the channel state information.

The division of the modules in the embodiments of the present application is schematic, and only one logical function division is provided, and in actual implementation, there may be another division manner, and in addition, each functional module in each embodiment of the present application may be integrated in one processor, may also exist alone physically, or may also be integrated in one module by two or more modules. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.

When the integrated module can be implemented in the form of hardware, the communication device may be as shown in fig. 8, and the processing unit 701 may be a processor 802. The processor 802 may be a Central Processing Unit (CPU), a digital processing module, or the like. The transceiver unit 702 may be the communication interface 801, and the communication interface 801 may be a transceiver, an interface circuit such as a transceiver circuit, a transceiver chip, or the like. The network device further includes: a memory 803 for storing programs executed by the processor 801. The memory 803 may be a nonvolatile memory such as a Hard Disk Drive (HDD) or a solid-state drive (SSD), and may also be a volatile memory (RAM), for example, a random-access memory (RAM). The memory 803 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such.

The processor 802 is configured to execute the program codes stored in the memory 803, and is specifically configured to execute the actions of the processing unit 701, which are not described herein again.

The specific connection medium among the communication interface 801, the processor 802, and the memory 803 is not limited in the embodiment of the present application. In the embodiment of the present application, the memory 803, the processor 802, and the communication interface 801 are connected by the bus 804 in fig. 8, the bus is represented by a thick line in fig. 8, and the connection manner between other components is merely illustrative and not limited. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 8, but this is not intended to represent only one bus or type of bus.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may 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, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. 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.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the scope of the embodiments of the present application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.

Claims

A method of communication, comprising:

the method comprises the steps that first equipment determines first information, wherein the first information is used for indicating the type of channel state information reported by second equipment; the type is one of a plurality of channel state information types;

and the first equipment sends a first message to the second equipment, wherein the first message carries the first information.
The method of claim 1, wherein the first message further carries second information, and the second information is used to trigger the second device to report channel state information corresponding to the type indicated by the second device; alternatively, the first and second electrodes may be,

the method further comprises the following steps:

and the first equipment sends a second message to the second equipment, wherein the second message carries second information, and the second information is used for triggering the channel state information corresponding to the type of the reporting indication of the second equipment.
The method according to claim 1 or 2, wherein the first message further carries third information, and the third information is used for indicating a bandwidth and/or a bandwidth location corresponding to the channel state information; or

The method further comprises the following steps:

and the first equipment sends a third message to the second equipment, wherein the third message carries third information, and the third information is used for indicating the bandwidth and/or the bandwidth position corresponding to the channel state information.
The method according to any of claims 1 to 3, wherein the first message is a random access response message media access control layer protocol data unit, MAC, PDU or wherein the first message is a random access response message media access control layer protocol data unit, control element, MAC CE.
The method of claim 4, wherein the first information is indicated by a subheader of a MAC header field of the first message.
The method of claim 5, wherein the subheader comprises an E/T/R/R/BI field, and wherein the first information is contained in a first and/or second R field of the subheader.
The method according to claim 5, wherein the subheader includes an E/T/RAPID field, and the first information is indicated by the RAPID field of the subheader.
The method according to any of claims 1 to 3, wherein the first message indicates a MAC CE or a MAC PDU.
The method of claim 8, wherein a Logical Channel Identity (LCID) field of a subheader of the MAC CE or a subheader of the MAC PDU is a first value.
The method according to claim 8 or 9, wherein the MAC PDU comprises R/F2/E/LCID field, and wherein the first information is indicated by at least one of R/F2/E fields of the MAC PDU.
The method according to any of claims 1 to 3, wherein the first message is control information.
The method of claim 11, wherein the first information is indicated by a channel state information request (CSI request) field of the first message.
The method of any one of claims 1 to 12, wherein the plurality of channel state information types comprise a first type and a second type; or, the plurality of channel state information types include a first type, a second type and a third type;

wherein the first type is a channel quality indication, the second type is a channel repetition number, and the third type is a channel quality indication and a channel repetition number.
A method of communication, comprising:

a second device receives a first message sent by a first device, wherein the first message carries first information, the first information is used for indicating the type of channel state information reported by the second device, and the type is one of a plurality of channel state information types;

and the second equipment reports the channel state information corresponding to the type indicated by the first information.
The method of claim 14, wherein the first message further carries second information, and the second information is used to trigger the second device to report channel state information corresponding to the type indicated by the indicator; alternatively, the first and second electrodes may be,

the method further comprises the following steps:

and receiving a second message sent by the first device, where the second message carries second information, and the second information is used to trigger the second device to report channel state information corresponding to the type indicated by the second device.
The method according to claim 14 or 15, wherein the first message further carries third information, and the third information is further used for indicating a bandwidth and/or a bandwidth location corresponding to the channel state information; or

The method further comprises the following steps:

and the second equipment receives a third message sent by the first equipment, wherein the third message carries third information, and the third information is used for indicating the bandwidth and/or the bandwidth position corresponding to the channel state information.
The method according to any of claims 14 to 16, wherein the first message is a random access response message medium access control layer protocol data unit, MAC PDU, or wherein the first message is a random access response message medium access control layer protocol data unit, control element, MAC CE.
The method of claim 17, wherein the first information is indicated by a subheader of a MAC header field of the first message.
The method of claim 18, wherein the subheader comprises an E/T/R/BI field, and wherein the first information is contained in a first and/or second R field of the subheader.
The method according to claim 18, wherein the subheader includes an E/T/RAPID field, and the first information is indicated by a RAPID field of the subheader.
The method according to any of claims 14 to 16, wherein the first message indicates a MAC CE or a MAC PDU.
The method of claim 21, wherein a Logical Channel Identity (LCID) field of a subheader of the MAC CE or a subheader of the MAC PDU is a first value.
The method according to claim 21 or 22, wherein the MAC PDU comprises R/F2/E/LCID field, wherein the first information is indicated by at least one of R/F2/E field of the MAC PDU.
The method according to any of claims 14 to 16, wherein the first message is control information.
The method of claim 24, wherein the first information is indicated by a channel state information request (CSI request) field of the first message.
The method according to any of claims 14 to 25, wherein said plurality of channel state information types comprises a first type and a second type; or, the plurality of channel state information types include a first type, a second type and a third type;

wherein the first type is a channel quality indication, the second type is a channel repetition number, and the third type is a channel quality indication and a channel repetition number.
A communications device comprising means for implementing the method of any one of claims 1-13; and/or comprising means for implementing the method according to any of claims 14-26.
A communications apparatus, comprising a processor, a transceiver, and a memory, the processor coupled with the memory;

the memory for storing programs or instructions;

the processor for executing the program or instructions to perform the method of any one of claims 1-13 by the transceiver; and/or to perform the method of any of claims 14-26 by the transceiver.
A computer-readable storage medium for storing a program or instructions which when executed perform the method of any one of claims 1-13; alternatively, the program or instructions, when executed, implement the method of any of claims 14-26.