WO2020042005A1

WO2020042005A1 - Method and device for sending downlink channel quality information

Info

Publication number: WO2020042005A1
Application number: PCT/CN2018/102934
Authority: WO
Inventors: 王宏; 唐珣; 于映辉; 张戬
Original assignee: 华为技术有限公司
Priority date: 2018-08-29
Filing date: 2018-08-29
Publication date: 2020-03-05

Abstract

The present application provides a method for sending downlink channel quality information, comprising: generating an MSG3, a bit of an MAC PDU subhead corresponding to an MAC SDU of the MSG3 comprising second indication information, the second indication information being used for indicating a downlink channel quality measurement result; sending the MSG3. A terminal device may measure the channel quality of a downlink channel according to the method to obtain a channel quality measurement result of the downlink channel, and send second indication information for indicating the quality measurement result of the downlink channel. A network device may determine the channel quality of the downlink channel after receiving the second indication information, and may accurately schedule the terminal device according to the channel quality of the downlink channel for data transmission, thereby improving the efficiency of resource utilization in a data transmission process.

Description

Method and device for transmitting downlink channel quality information

Technical field

The present application relates to the field of communications, and in particular, to a method and device for sending downlink channel quality information.

Background technique

In a wireless communication system, in order to transmit data, a terminal device and a network device need to establish a wireless connection. The establishment of a wireless connection requires a certain signaling overhead, such as the signaling overhead in a random access process. In some communication scenarios, for example, in machine type communication (MTC) scenarios, the characteristics of data transmission are: the amount of data is small, and the arrival time of downlink data is uncertain. If you want to transmit smaller data, Establishing a connection to transmit downlink data by using a wireless connection establishment method in the prior art will reduce the utilization efficiency of wireless resources.

Therefore, how to improve the resource utilization rate in the process of small data transmission is an urgent problem that needs to be solved.

Summary of the Invention

The present application provides a method and device for sending downlink channel quality information. A terminal device reports downlink channel quality information in a random access message. In this way, after determining the downlink channel quality, the network device can accurately schedule the terminal device for data transmission. For example, small data is transmitted through messages in the random access process, thereby improving resource utilization efficiency in the small data transmission process.

In a first aspect, the present application provides a method for transmitting downlink channel quality information, including: generating a message (MSG) 3, and a media access control (MAC) service data unit (SDU) of the MSG 3 The bits of the corresponding MAC protocol data unit (protocol data unit, PDU) subheader carry the second indication information, and the second indication information is used to indicate a downlink channel quality measurement result; and MSG3 is sent.

The above method can be performed by a terminal device. Since more idle bits are available in the MAC PDU subheader carrying MSG3, after the terminal device determines that it needs to report downlink channel quality information, it can use the The idle bit sends the downlink channel quality measurement result, and the network device can determine the downlink channel quality after obtaining the second indication information. The network device reasonably schedules resources for the terminal device to perform data transmission according to the determined downlink channel quality, which improves the data transmission process. Resource utilization efficiency.

Optionally, the bits of the MAC PDU subheader corresponding to the MAC SDU of MSG3 are one or more of the following bits: bits in the L domain, bits in the R domain, and bits in the logical channel identifier (LCID) domain.

The above MAC SDU may be a common control channel (CCCH) SDU encapsulated with a radio resource control (RRC) message. When the terminal device has uplink data to be transmitted, the uplink data may be encapsulated in a dedicated MSG3 In a dedicated channel (DTCH) SDU, at this time, the size of the L field of the MAC PDU subheader corresponding to the CCCH encapsulated in the RRC message is 7 bits. Because the size of the RRC message is fixed, only 3 One bit can indicate the RRC message, and the remaining 4 bits can be used to carry downlink channel quality information.

When the MAC SDU is a CCCH SDU encapsulated with an RRC message and MSG3 contains uplink data, the R field of the MAC PDU subheader corresponding to CCCH SDU and DTCH SDU has 2 available fields. In addition to using the 4-bit L field, the terminal The device may also use all or part of the above two R domain bits to carry downlink channel quality information.

The downlink channel quality information may also be carried in the LCID field of the MAC PDU subheader corresponding to the MAC SDU encapsulated with the RRC message.

Optionally, before generating the MSG3, the method further includes: receiving first indication information, where the first indication information is used to instruct to report downlink channel quality information in a random access process.

Optionally, the first indication information is included in system information (SI) or random access response (RAR).

The above scheme can dynamically instruct the terminal device to report downlink channel quality information.

In the second aspect, the present application provides another method for sending downlink channel quality information, including: generating MSG3, MSG3 includes an RRC message, and the remaining bits of the RRC message and the bits of the MAC PDU subheader corresponding to the MAC SDU of MSG3 carry the second Indication information, and the second indication information is used to indicate a downlink channel quality measurement result; sending MSG3.

The above method can be executed by a terminal device. After the terminal device determines that it needs to report downlink channel quality information, it can send the downlink channel quality measurement result through the idle bits in the MAC PDU subheader of MSG3 and the remaining bits of the RRC message, and the network device obtains the second After the indication information, the downlink channel quality can be determined. The network device reasonably schedules resources for terminal devices to perform data transmission according to the determined downlink channel quality, which improves the resource utilization efficiency in the data transmission process.

Optionally, the bits of the MAC PDU subheader corresponding to the MAC SDU of MSG3 are one or more of the following bits: bits in the L domain, bits in the R domain, and bits in the LCID domain.

Optionally, the first indication information is included in SI or RAR.

In a third aspect, the present application provides another method for transmitting downlink channel quality information, including: generating MSG3, where MSG3 includes a ResumeID field, where the ResumeID field includes second indication information, and the second indication information is used to indicate Downlink channel quality measurement results; send MSG3.

The execution method of the above method is, for example, a terminal device. In some communication scenarios, the terminal device may send a truncated recovery identifier to facilitate the restoration of the wireless bearer. The length of the truncated recovery identifier is, for example, 24 bits, and the recovery identifier in MSG3 The size of the field is, for example, 40 bits. Therefore, the free bits of the recovery identification field in MSG3 can also be used to carry other information. If the terminal device needs to send downlink channel quality information, the idle bit in the recovery identification field can be used to send downlink channel quality information. The network device can determine the downlink channel quality after obtaining the second indication information by recovering the idle bit in the identification field. The quality meets the transmission requirements, and downlink data can be transmitted through MSG4, thereby improving resource utilization during small data transmission.

Optionally, the recovery identification field of MSG3 includes a truncated recovery identification (truncatedResumeID) and an early report (EarlyReport), and the second indication information is included in the early report.

Optionally, the size of the recovery identification field is 40 bits, the early transmission report occupies all or part of the first 16 bits of the recovery identification field, and the truncated recovery identification occupies the last 24 bits of the recovery identification field.

Optionally, before generating the message MSG3, the method further includes: receiving first indication information, where the first indication information is used to instruct to report downlink channel quality information in a random access process.

Optionally, the first indication information is included in SI or RAR.

In a fourth aspect, the present application provides a method for obtaining downlink channel quality information. The method includes: receiving MSG3; obtaining second indication information, and the second indication information is carried in bits of a MAC PDU subheader corresponding to a MAC SDU of MSG3. The second indication information is used to indicate a downlink channel quality measurement result.

The apparatus for executing the method is, for example, a network device. After the terminal device measures the downlink channel quality to obtain the channel quality measurement result (for example, the channel measurement value) of the downlink channel, if the channel quality value is less than the quality threshold value obtained from the network device, it sends an indication that the channel quality value is less than the quality threshold value. If the channel quality value is greater than the quality threshold value obtained from the network device, sending the second indication information indicating that the channel quality value is greater than the quality threshold value. After receiving the second instruction information, the network device can determine the quality of the downlink channel, and can accurately schedule the terminal device for data transmission according to the quality of the downlink channel, thereby improving the resource utilization efficiency in the data transmission process.

Optionally, before receiving MSG3, the method further includes: sending first indication information, where the first indication information is used to instruct to report downlink channel quality information in a random access process.

Optionally, the first indication information is included in SI or RAR.

In a fifth aspect, the present application also provides a method for receiving downlink channel quality information, the method includes: receiving MSG3, where MSG3 includes an RRC message; obtaining second indication information, where the second indication information is carried in the remaining bits of the RRC message and Among the bits of the MAC PDU subheader corresponding to the MAC SDU of MSG3, the second indication information is used to indicate a downlink channel quality measurement result.

The above method can be performed by a network device. After the terminal device determines that it needs to report downlink channel quality information, it can send the downlink channel quality measurement result through idle bits in the MAC PDU subheader of the MSG3 and the spare bits of the RRC message. After obtaining the second indication information, the downlink channel quality can be determined, and the network device reasonably schedules resources for terminal devices to perform data transmission according to the determined downlink channel quality, which improves resource utilization efficiency in the data transmission process.

Optionally, the first indication information is included in SI or RAR.

According to a sixth aspect, the present application provides another method for receiving downlink channel quality information. The method includes: receiving MSG3, and a MSG3's ResumeID field includes second indication information, and the second indication information is used to indicate the downlink channel. Quality measurement results; obtaining second instruction information.

The execution means of the above method is, for example, a network device. In some communication scenarios, the terminal device may send a truncated recovery identifier to facilitate the restoration of the wireless bearer. The length of the truncated recovery identifier is, for example, 24 bits, and the recovery identifier in MSG3 The size of the field is, for example, 40 bits. Therefore, the free bits of the recovery identification field in MSG3 can also be used to carry other information. If the terminal device needs to send downlink channel quality information, the idle bit in the recovery identification field can be used to send downlink channel quality information. The network device can determine the downlink channel quality after obtaining the second indication information by recovering the idle bit in the identification field. The quality meets the transmission requirements, and downlink data can be transmitted through MSG4, thereby improving resource utilization during small data transmission.

Optionally, the recovery identification field of MSG3 includes a truncated recovery identification (truncatedResumeID) and an early report (EarlyReport), and the second indication information is included in the early transmission report.

Optionally, the first indication information is included in SI or RAR.

In a seventh aspect, the present application provides a device that can implement functions corresponding to each step in the method according to any one of the first to sixth aspects, and the functions may be implemented by hardware or The corresponding software is implemented by hardware. The hardware or software includes one or more units or modules corresponding to the functions described above.

In a possible design, the apparatus includes a processor configured to support the apparatus to perform a corresponding function in the method according to any one of the first to sixth aspects. The device may also include a memory for coupling to the processor, which stores program instructions and data necessary for the device. Optionally, the device further includes a transceiver, and the transceiver is configured to support communication between the device and other network elements. The transceiver may be an independent receiver, an independent transmitter, or a transceiver with integrated transceiver functions.

According to an eighth aspect, the present application provides a computer-readable storage medium. The computer-readable storage medium stores computer program code. When the computer program code is executed by a processing unit or a processor, the first aspect to the sixth aspect are implemented. The method of any one of the aspects.

In a ninth aspect, the present application provides a computer program product. The computer program product includes: computer program code that, when the computer program code is executed by a processing unit or a processor, implements any one of the first to sixth aspects. Methods.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a communication system applicable to the present application; FIG.

FIG. 2 is a schematic diagram of a method for sending downlink channel quality information provided by the present application; FIG.

FIG. 3 is a schematic structural diagram of a MAC PDU provided by the present application; FIG.

4 is a schematic structural diagram of a sub-header of a MAC PDU provided in the present application;

5 is a schematic structural diagram of a sub-header of another MAC PDU provided in the present application;

FIG. 6 is a schematic structural diagram of still another sub head of a MAC PDU provided in the present application; FIG.

7 is a schematic structural diagram of still another sub-header of a MAC PDU provided in the present application;

8 is a schematic diagram of another method for sending downlink channel quality information provided by the present application;

FIG. 9 is a schematic diagram of still another method for sending downlink channel quality information provided by the present application; FIG.

FIG. 10 is a schematic diagram of a method for sending downlink channel quality information in a UP scheme provided by the present application; FIG.

11 is a schematic diagram of a method for receiving downlink channel quality information provided by the present application;

12 is a schematic diagram of another method for receiving downlink channel quality information provided by the present application;

FIG. 13 is a schematic diagram of still another method for receiving downlink channel quality information provided by the present application; FIG.

14 is a schematic structural diagram of a terminal device provided by the present application;

15 is a schematic structural diagram of another terminal device provided in the present application;

16 is a schematic structural diagram of still another terminal device provided by the present application;

17 is a schematic structural diagram of still another terminal device provided by the present application;

18 is a schematic structural diagram of still another terminal device provided by the present application;

19 is a schematic structural diagram of still another terminal device provided by the present application;

20 is a schematic structural diagram of a network device provided by the present application;

FIG. 21 is a schematic structural diagram of another network device provided in the present application; FIG.

22 is a schematic structural diagram of still another network device provided by the present application;

23 is a schematic structural diagram of still another network device provided by the present application;

FIG. 24 is a schematic structural diagram of still another network device provided by the present application; FIG.

FIG. 25 is a schematic structural diagram of still another network device provided by the present application.

detailed description

The technical solutions in this application will be described below with reference to the drawings.

FIG. 1 shows a communication system applicable to the present application. The communication system includes network equipment and terminal equipment. The network equipment communicates with the terminal equipment through wireless time-frequency resources. When the terminal equipment sends information, the wireless communication module of the terminal equipment can obtain the information bits to be transmitted to the network equipment through the channel. The information bits are, for example, information bits generated by the processing module of the terminal device, received from other devices, or stored in the storage module of the terminal device.

In this application, a terminal device may be referred to as an access terminal, user equipment (UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless Communication equipment, user agent or user device. The access terminal may be a cellular phone, a handheld device with a wireless communication function, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, and a user device in a 5G communication system.

The network device can be a base station (BTS) in a code division multiple access (CDMA) system, or a base station (WCDMA) system in a wideband code division multiple access (WCDMA) system. node (B, NB), or an evolutionary base station (eNB) in a long term evolution (LTE) system, or a base station (gNB) in a 5G communication system. The above base stations are just examples. Note that the network device may also be a relay station, an access point, an in-vehicle device, a wearable device, and other types of devices.

The above communication system applicable to the present application is merely an example, and the communication system applicable to the present application is not limited thereto. For example, the number of network devices and terminal devices included in the communication system may be other numbers.

At present, in the data transmission method used by the communication system, since the terminal device and the network device have not established a dedicated wireless connection and bearer before random access, the terminal device cannot achieve the measurement and reporting of the downlink channel quality, so the network device Unable to accurately schedule terminal equipment for data transmission, resulting in reduced resource utilization efficiency.

The method for sending downlink channel quality information provided in this application will be described in detail below.

As shown in FIG. 2, this application provides a method for transmitting downlink channel quality information. The method can be executed by a terminal device. The method 200 reports a rough channel quality through one bit, which is suitable for, but not limited to, non-data early transmission ( Method 200 includes a non-early data transmission (non-EDT) scenario, an uplink early data transmission (UL-EDT) scenario, and a downlink early data transmission (DL-EDT) scenario. The method 200 includes:

S210: Generate MSG3, and bits of the MAC PDU subheader corresponding to the MAC and SDU of the MSG3 carry the second indication information, and the second indication information is used to indicate a downlink channel quality measurement result.

Optionally, the terminal device may generate MSG3 according to the first instruction information received from the network device, where the first instruction information is used to indicate that downlink channel quality information is reported in MSG3, or the first instruction information is used to indicate that random access is performed. The downlink channel quality information is reported in the process, and the first indication information may be carried in SI or RAR.

In this application, information that can reflect the quality of the downlink channel can be referred to as downlink channel quality information. For example, the measured value of the downlink channel quality is a type of downlink channel quality information, and the range of the measured value of the downlink channel quality is also a type of downlink channel quality. information.

In this application, MSG3 is the third message that is exchanged between the terminal device and the network device during the random access process. It may contain different content in different situations. Therefore, MSG3 is used to summarize all the situations. The first two messages are a random access preamble and a random access response (RAR) message. The RRC message carried by MSG3 generally includes an RRC Connection Request message (RRCConnectionRequest), an RRC Connection Resume Request message (RRCConnectionResumeRequest), an RRC Connection Reestablishment message (RRCConnectionReestablishmentReuqest), and an RRC Early Data Request message (RRCEarlyDataRequest).

The first indication information may be carried in a dedicated bit, that is, the first indication information is indicated by a dedicated bit. For example, when the bit is "1", the terminal device is instructed to report downlink channel quality information. When the bit is "0", it indicates that the terminal device does not report downlink channel quality information. The first indication information may also be a bit that multiplexes other information. For example, when the bits of the other information are in a preset state, the preset state instructs the terminal device to report downlink channel quality information. The above examples are merely examples, and the specific form of the first indication information is not limited in this application.

The second indication information may be carried in one or more bits, that is, the range of the downlink channel quality measurement value is indicated by the one or more bits. The downlink channel quality measurement value may also be referred to as a downlink channel quality measurement result. The two terms are interchangeable, and the explanation may be applied to all embodiments of the present application.

In this application, the meaning of "carrying on" can be understood through the following examples. For example, the first indication information is carried on a dedicated bit, that is, the dedicated indication bit is used to indicate or carry the first indication information.

The quality of the downlink channel can be reflected by one or more of the following parameters: channel quality indicator (CQI), reference signal receiving power (RSRP), reference signal receiving quality (reference signal receiving) quality, RSRQ), signal to interference plus noise ratio (signal to interference plus noise ratio, SINR), and the number of repetitions for successfully decoding the physical downlink control channel (physical downlink control channel, PDCCH).

The above parameters are merely examples, and the quality of the downlink channel in the method 200 may also be reflected by other quantities.

S220. Send MSG3.

The terminal device reports the instruction information of the downlink channel quality information according to the instruction of the network device, measures the downlink channel quality, and encapsulates the second instruction information indicating the measurement result in MSG3 to generate MSG3, and then the terminal device sends the MSG3 to the network device.

The downlink channel quality measurement result may be a measurement value, or a range corresponding to the measurement value, or information indicating the measurement value or information indicating the range corresponding to the measurement value. The above explanation of “downlink channel measurement result” applies. For all examples of this application.

In this application, before sending MSG3, the terminal device first sends a random access preamble to the network device, and then the terminal device receives a Random Access Response message (RAR) sent by the network device, which is carried in the RAR The terminal device sends an MSG3 uplink resource grant (UL Grant), and the terminal device uses the UL Grant to send MSG3.

In summary, the terminal device generates the second instruction information indicating the measurement result of the downlink channel quality, encapsulates the second instruction information in the MSG3 during the random access process, and then sends the second instruction information to the network device. After receiving the second instruction information, the network device can determine the quality of the downlink channel, and can accurately schedule the terminal device for data transmission according to the quality of the downlink channel, thereby improving the resource utilization efficiency in the data transmission process.

It should be noted that in this application, terms such as "first", "second", and "third" are only used to distinguish different individuals in the same type of objects, and should not be understood as other meanings, for example, "第The “two instruction information” refers to instruction information different from the “first instruction information”, and the specific form of the “first instruction information” and the “second instruction information” is not limited in this application.

Example One (Method 200a).

An implementable method 200a. Based on the method 200, specifically, the second indication information is carried in one bit, that is, a bit is used to indicate a downlink channel quality measurement result. The detailed method is as follows:

S201a: Generate MSG3, and one bit of the MAC PDU subheader corresponding to the MAC and SDU of the MSG3 carries second indication information, where the second indication information is used to indicate that a downlink channel quality measurement result is greater than or less than a downlink channel quality threshold.

The second indication information is carried in one bit, that is, one bit is used to indicate that the downlink channel quality value is greater than the downlink channel quality threshold, or smaller than the downlink channel quality threshold.

The downlink channel quality can be reflected by one or more of the following parameters: channel quality indicator (CQI), reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), signal to interference plus noise ratio (signal to interference plus noise ratio, SINR), and the number of repetitions for successfully decoding a physical downlink control channel (physical downlink control channel, PDCCH). The downlink channel quality measurement result may be a measurement result or a confirmation result of the foregoing parameters.

The above parameters are just examples, and the downlink channel quality in the method 200a may also be reflected by other quantities.

The downlink channel quality threshold may be a value obtained by the terminal device from the SI, or may be a value preset in the terminal device, or a value prescribed by a protocol.

S220. Send the MSG3.

The terminal device reports the instruction information of the downlink channel quality information according to the instruction of the network device, measures the downlink channel quality, and encapsulates the second instruction information indicating the measurement result in MSG3 to generate MSG3, and then the terminal device sends the MSG3 to the network device. Specifically, the second indication information is carried in one bit. For example, when the measurement result of the downlink channel quality is greater than the threshold value of the downlink channel quality, the bit is set to "1", and when the measurement result of the downlink channel quality is less than the downlink channel When the quality threshold is set, the bit device is "0". Alternatively, the bits are set to interchange the meanings of "1" and "0". In this way, the terminal device sends the MSG3 containing the bit to the network device. If the bit is set to "1", it indicates that the measurement result of the downlink channel quality measured by the terminal device is greater than the downlink channel quality threshold, and if it is "0" , It indicates that the measurement result of the downlink channel quality measured by the terminal device is less than the downlink channel quality threshold. Alternatively, the meanings of "1" and "0" set in this bit are interchanged.

In summary, the terminal device generates the second instruction information indicating the measurement result of the downlink channel quality, encapsulates the second instruction information in the MSG3 during the random access process, and then sends the second instruction information to the network device. After receiving the second instruction information, the network device can determine the downlink channel quality measurement result, and can accurately schedule the terminal device for data transmission according to the downlink channel quality measurement result, thereby improving the resource utilization efficiency in the data transmission process. In addition, the above solution only One bit is required to indicate the channel quality measurement result of the downlink channel, which has the advantage of small signaling overhead.

Example Two (Method 200b).

Based on the method 200a, the method 200b specifically provides a design method for carrying the second indication information.

In the LTE communication system, MSG3 in the random access process is a MAC PDU. The MAC PDU consists of a header, one or more MAC SDUs, and optional redundant bits (Padding), as shown in Figure 3.

The packet header consists of one or more MAC PDU subheaders. The redundant bits and each MAC SDU correspond to one MAC PDU subheader. The types of MAC PDU subheaders are shown in Figures 4 to 6, and Figure 4 In FIG. 6, oct represents an 8-bit byte (octet).

The MAC subheaders in the three figures above contain the following fields, which have the following meanings:

R: Reserved bits.

F2: Format 2 (Format2), used to indicate whether the F field is included.

E: Extension, used to indicate whether there is a subheader behind the current subheader.

LCID: Logical Channel ID (Logical Channel ID), used to identify the logical channel corresponding to the MAC SDU.

L: Length, which is used to indicate the bytes length of the corresponding MAC SDU.

F: Format, used to indicate whether the L field is 7bits or 15bits.

It can be known from the above that the MAC PDU subheader includes a reserved bit.

Prior to LTE Release (Release) 15, the third message did not carry user plane data, it only carried control information. For example, during the RRC connection establishment process, the terminal device sends an RRC Connection Request message to the network device. This message is encapsulated into a MAC PDU in the form of MAC SDU, which is sent by the terminal device to the network device. Because the RRC Connection Request message is a message on the common control channel (CCCH), it can also be called CCCH SDU. For another example, during the RRC connection re-establishment process, the terminal device sends an RRC Connection Reestablishment Request message to the network device. This message is also encapsulated into a MAC PDU in the form of MAC SDU, which is sent by the terminal device to the network device, which is also carried on the CCCH. . At this time, the MAC PDU containing the third message is composed of one or two MAC PDU subheaders, a MAC SDU, and optional redundant bits. If there are no redundant bits, there is only one MAC PDU subheader. In LTE Release 15, the third message can carry user plane data. If the user plane data is carried through a non-access stratum (NAS) message, that is, it is transmitted through a signaling radio bearer (SRB), then The scheme of transmitting user plane data through SRB is called a control plane (CP) scheme; if the user plane data is transmitted through a data radio bearer (DRB), then the scheme of transmitting user plane data through DRB is a user Plane (user plane, UP). In the CP solution, the user plane data is included in the RRC message, so the MAC layer structure is the same as the MSG3 MAC layer structure that does not carry user data. In the UP solution, in addition to the CCCH and SDU, there is a DTCH and SDU that carry user plane data. , There are at least two MAC PDU subheaders, that is, at least two reserved bits.

That is, when the terminal device sends MSG3, if MSG3 does not contain uplink data or the uplink data is transmitted through the CP scheme, the MAC PDU subheader has at least one R field bit. If MSG3 contains uplink data and the uplink data is transmitted through the UP scheme, the MAC The PDU subheader has at least two R field bits.

In the method 200b, an R field bit in the subheader of the MAC PDU corresponding to MSG3 is used to carry (or bear) the second indication information. Specifically, when the R bit is "1", it is used to indicate the terminal device. The measurement result of the measured downlink channel quality is greater than the downlink channel quality threshold. When the R bit is "0", it indicates that the measurement result of the downlink channel quality measured by the terminal device is greater than the downlink channel quality threshold. Alternatively, the meanings of the above "1" and "0" are interchanged.

Example Three (Method 200c).

Based on the method 200a, the method 200c specifically provides another design method for carrying the second instruction information.

In the prior art, MSG3 can carry different RRC messages, including RRC Connection Request, RRC Connection Reestablishment Request, RRC Connection Resume Request, and RRC Early Data Request. The second indication information may be carried in different remaining bits of the foregoing RRC message.

Specifically, the second indication information may be carried in the spare bits of the RRC Connection Resume Request message, as shown in bold font in the following pseudo code:

When the remaining bit is "1", it indicates that the measurement result of the downlink channel quality measured by the terminal is greater than the downlink channel quality threshold; when it is "0", it indicates that the measurement result of the downlink channel quality measured by the terminal is less than the downlink channel quality threshold Value; or, the meanings of "1" and "0" are interchanged.

Or, specifically, the second indication information may be carried in the spare bits of the RRC Connection Request message, as shown in bold font in the following pseudo code:

Example 4 (Method 300a).

On the basis of method 200, the present application also provides a method 300a. Specifically, the second indication information is carried in multiple (that is, two or more) bits, that is, the downlink channel is indicated by multiple bits. Range of quality measurement results. The detailed method is as follows:

S301a: Generate MSG3, and multiple bits of the MAC PDU subheader corresponding to the MAC and SDU of the MSG3 carry the second indication information, and the second indication information is used to indicate a range of downlink channel quality measurement results.

The second indication information is carried in multiple bits, that is, the multiple channel bits are used to indicate that the downlink channel quality is greater than the downlink channel quality threshold, or smaller than the downlink channel quality threshold.

The above parameters are merely examples, and the downlink channel quality in the method 300a may also be reflected by other quantities.

The downlink channel quality threshold may be a value obtained by the terminal device from the SI, a value preset in the terminal device, or a value prescribed by the communication protocol.

S302a. Send the MSG3.

The terminal device measures downlink channel quality according to the instruction information sent by the network device to report the downlink channel quality information, and encapsulates the second instruction information indicating the range corresponding to the measurement result in MSG3 to generate MSG3. Then, the terminal device uses the MSG3 Send to network device. Specifically, the second indication information is carried in multiple bits. For example, the following table is used as an example to describe the method for indicating the range of the downlink channel quality measurement result by using multiple bits (the channel quality in the following row is RSRP as an example). Taking N bits as an example, the N bits can represent 2 ^N states, that is, 2 ^N ranges can be indicated.

索引index	N个比特b _N-1b _N-2…b ₁b ₀ N bits b _N-1 b _N-2 … b ₁ b ₀	RSRP范围RSRP range
00	00…0000… 00	RSRP<RSRP ₀ RSRP <RSRP ₀
11	00…0100… 01	RSRP ₀≤RSRP<RSRP ₁ RSRP ₀ ≤RSRP <RSRP ₁
……...	……...	Zh
2 ^N-2 2 ^N -2	11…1011… 10	RSRP ₂ ^N _-2≤RSRP<RSRP ₂ ^N _-1 RSRP ₂ ^N _-2 ≤RSRP <RSRP ₂ ^N _-1
2 ^N-1 2 ^N -1	11…1111 ... 11	RSRP≥RSRP ₂ ^N _-1 RSRP≥RSRP ₂ ^N _-1

Among them, RSRP is a measured value, RSRP ₀ , RSRP ₁ , ..., RSRP ₂ ^N _-2 , RSRP ₂ ^N _-1 are constants, and these constants can be specified by the protocol.

When the measurement result of the downlink channel quality is within a certain measurement result range, the N bits (that is, the second indication information) are set to corresponding values. The corresponding relationship between the value set by the N bits and the measurement result range is only a schematic, and may also be other corresponding relationships, for example, using a part of the states represented by the N bits to indicate a range of less than 2 ^N In this way, the terminal device sends the MSG3 containing the multiple bits to the network device, and the network device can determine the range of the measurement result of the downlink channel quality measured by the terminal device according to the value of the multiple bits.

In summary, the terminal device generates the second instruction information indicating the range of the downlink channel quality, encapsulates the second instruction information in the MSG3 during the random access process, and then sends the second instruction information to the network device. After receiving the second instruction information, the network device can determine the range of the downlink channel quality measurement result, and can accurately schedule the terminal device for data transmission according to the range of the downlink channel quality measurement result, thereby improving the resource utilization efficiency in the data transmission process.

Example 5 (Method 300b).

On the basis of method 200, the present application also provides a method 300b. Specifically, the second indication information is carried in multiple (that is, two or more) bits, that is, multiple channels are used to indicate downlink channel quality measurement. The range of results. In the method 300b, the multiple bits are included in the RRC message.

S301b: The UE sends an RRCEarlyDataRequest message to the eNB, which includes a NAS PDU, and the NAS PDU contains uplink user plane data. Extend the RRCEarlyDataRequest message, as shown in bold font below. The RRCEarlyDataRequest message carries earlyReport. Schematically, the earlyReport field contains 4 bits, which can indicate the range of the downlink channel quality measurement result. The range is given by the index value.

The above scheme uses the extended field earlyReport-r16 to report channel quality. For example, to report 16 ranges, it is necessary to use 4 bits to indicate 16 ranges. As shown in the following table, earlyReport-r16 is used to indicate the channel quality measurement result range index value.

信道质量测量结果范围索引值Channel quality measurement result range index value	信道质量测量结果范围(以RSRP为例)Channel quality measurement result range (taking RSRP as an example)
00	RSRP＜RSRP ₀ RSRP ＜ RSRP ₀
11	RSRP ₀≤RSRP＜RSRP ₁ RSRP ₀ ≤RSRP ＜ RSRP ₁
……...	……...
1414	RSRP ₁₃≤RSRP＜RSRP ₁₄ RSRP ₁₃ ≤RSRP ＜ RSRP ₁₄
1515	RSRP ₁₄≤RSRP RSRP ₁₄ ≤RSRP

Alternatively, the RRCEarlyDataRequest message is extended in the following manner, that is, in the form of a bit string (BitString), which can also indicate 16 ranges, as shown in the following table.

比特串b ₃b ₂b ₁b ₀ Bit string b ₃ b ₂ b ₁ b ₀	信道质量测量结果范围(以RSRP为例)Channel quality measurement result range (taking RSRP as an example)
00000000	RSRP＜RSRP ₀ RSRP ＜ RSRP ₀
00010001	RSRP ₀≤RSRP＜RSRP ₁ RSRP ₀ ≤RSRP ＜ RSRP ₁
……...	……...
11101110	RSRP ₁₃≤RSRP＜RSRP ₁₄ RSRP ₁₃ ≤RSRP ＜ RSRP ₁₄
11111111	RSRP ₁₄≤RSRP RSRP ₁₄ ≤RSRP

In the above two methods, 16 ranges or 4 bits are all used as an example, and a partial range or a part of states indicated by multiple bits may be used. The method of using the partial ranges is shown in the following table.

信道质量测量结果范围索引值Channel quality measurement result range index value	信道质量测量结果范围(以RSRP为例)Channel quality measurement result range (taking RSRP as an example)
00	RSRP＜RSRP ₀ RSRP ＜ RSRP ₀
11	RSRP ₀≤RSRP＜RSRP ₁ RSRP ₀ ≤RSRP ＜ RSRP ₁
……...	……...
1010	RSRP ₉≤RSRP＜RSRP ₁₀ RSRP ₉ ≤RSRP ＜ RSRP ₁₀
1212	RSRP ₁₀≤RSRP RSRP ₁₀ ≤RSRP
13-1513-15	Reserved(保留)Reserved

As can be seen from the above table, index values 0-12 are used, and 13-15 are reserved index values.

The method used to indicate some of the states indicated by multiple bits is shown in the table below.

比特串b ₃b ₂b ₁b ₀ Bit string b ₃ b ₂ b ₁ b ₀	信道质量测量结果范围(以RSRP为例)Channel quality measurement result range (taking RSRP as an example)
00000000	RSRP＜RSRP ₀ RSRP ＜ RSRP ₀
00010001	RSRP ₀≤RSRP＜RSRP ₁ RSRP ₀ ≤RSRP ＜ RSRP ₁
……...	……...
10011001	RSRP ₈≤RSRP＜RSRP ₉ RSRP ₈ ≤RSRP ＜ RSRP ₉
10101010	RSRP ₉≤RSRP RSRP ₉ ≤RSRP
1011-11111011-1111	Reserved(保留)Reserved

When the downlink channel quality measurement result is in a certain measurement result range, the extended field earlyReport (that is, the second indication information) is set to an index value corresponding to the range or a value corresponding to the N bits. In this way, the terminal device sends the MSG3 containing the multiple bits to the network device, and the network device can determine the range of the measurement result of the downlink channel quality measured by the terminal device according to the values of the multiple bits.

S302b: Send the MSG3.

The terminal device reports the downlink channel quality indication information according to the instructions of the network device, measures the downlink channel quality, and encapsulates the second indication information indicating the range corresponding to the measurement result in MSG3 to generate MSG3. Then, the terminal device sends the MSG3 To network equipment.

In summary, the terminal device generates the second instruction information indicating the range of the downlink channel quality measurement result, encapsulates the second instruction information in the MSG3 during the random access process, and then sends the second instruction information to the network device. After receiving the second instruction information, the network device can determine the range of the downlink channel quality measurement result, and can accurately schedule the terminal device for data transmission according to the range of the downlink channel quality measurement result, thereby improving the resource utilization efficiency in the data transmission process.

Example Six (Method 300c).

Based on method 200, this application also provides a method 300c. Specifically, a new RRC message is defined. The new RRC message is multiplexed with the RRC message carried by MSG3 in the prior art. The new RRC message can be It is carried on SRB0 or SRB1, and the second indication information is included in the new RRC message. The detailed method is as follows.

S301c: The UE sends an RRCEarlyDataRequest message to the eNB, which contains a NAS PDU, and the NAS PDU contains uplink user plane data. Define a new RRC message, such as the RRCEarlyReport message, as follows.

The RRC message includes N bits for indicating a range of downlink channel quality measurement results, that is, second indication information. The N bits can also be converted into integer data types to indicate the range of downlink channel quality measurement results through an index value. If N = 4, the specific indication method is as in the above embodiment.

The RRCEarlyReport message can be multiplexed with any one of the following RRC messages: RRCConnectionRequest, RRCConnectionReestablishementRequest, RRCConnectionResumeRequest, RRCEarlyDataRequest.

S302c: Send the MSG3.

The terminal device measures downlink channel quality according to the instruction information sent by the network device to report the downlink channel quality information, and encapsulates the second instruction information indicating the range corresponding to the measurement result in MSG3 to generate MSG3. Then, the terminal device uses the MSG3 Send to network device.

Example Seven (Method 300d).

On the basis of the method 300a, the present application also provides a method 300d. Specifically, the method 300d provides a method for carrying the second indication information by using multiple bits of the MAC PDU subheader corresponding to the MAC SDU of the MSG3.

The method 300d includes:

S301d, the MSG3 is generated, and the bits of the MAC PDU subheader corresponding to the MAC and SDU of the MSG3 include second indication information, and the second indication information is used to indicate a range of downlink channel quality measurement results.

Specifically, when the terminal device uses the UP scheme for uplink data UL-EDT transmission in advance, the second indication information may be carried in the L field of the MAC PDU subheader corresponding to the MAC SDU.

The above MAC SDU may be a CCCH SDU encapsulated with an RRC message. When the terminal device has uplink data to be transmitted, the uplink data may be encapsulated in the DTCH SDU of MSG3. At this time, the MAC PDU corresponding to the CCCH SDU encapsulated with the RRC message is encapsulated. The size of the L field in the header is 7 bits. Since the RRC message is RRCConnectionResumeRequest at this time, its size is fixed. Only 3 bits in the above L field can indicate the size of the RRC message. The remaining 4 bits can be used to carry the second indication. information.

As shown in FIG. 7, as a possible implementation manner, the L domain is divided into an L1 domain and an L2 domain, 4 bits of the L1 domain are used to carry the second indication information, and 3 bits of the L2 domain are used to indicate the RRC message. size. The manner in which the 4 bits carry the second indication information may be the manner in the foregoing embodiment. Alternatively, a part of the four bits or a part of the 16 states indicated by the four bits is used to carry the second indication information.

S302d: Send MSG3.

When the downlink channel quality measurement result is within a certain measurement result range, the four bits (that is, the second indication information) are set to corresponding values. The four bit values corresponding to a set relationship with the measurement range is only a schematic, and may be other correspondence relation, for example, use 4 bits of the portion indicated by the state to the state indicated ^four range of less than 2, so , The terminal device sends the MSG3 containing the multiple bits to the network device, and the network device can determine the range of the downlink channel quality measurement result measured by the terminal device according to the value of the multiple bits.

In summary, the terminal device generates the second instruction information indicating the range of the downlink channel quality, encapsulates the second instruction information in the MSG3 during the random access process, and then sends the second instruction information to the network device. After receiving the second instruction information, the network device can determine the range of the downlink channel quality measurement result. The network device can reasonably schedule resources for the terminal device to perform data transmission according to the determined range of the downlink channel quality measurement result, which improves the data transmission process. Resource utilization efficiency.

Example Eight (Method 800).

This application also provides a method 800. Specifically, the second indication information is carried in multiple bits. In this method 800, the multiple bits are included in the RRC message and the MAC PDU subheader, that is, the bits in the RRC message are used. And bits in the MAC PDU subheader, combining the two bits together to carry the second indication information. The flowchart of the method 800 is shown in FIG. 8, and the detailed method is as follows.

S810: Generate MSG3. MSG3 contains the RRC message. The remaining bits of the RRC message and the bits of the MAC PDU subheader of MSG3 carry the second indication information, and the second indication information is used to indicate the downlink channel quality measurement result.

When the terminal device uses the UP scheme for UL-EDT transmission, the second indication information may be carried in the spare bits of the RRC message (such as the RRCConnectionResumeRequest message) and the R field of the MAC PDU subheader corresponding to the MAC SDU; or, the terminal device When the RRC connection is requested, the second indication information may be carried in the R bits of the remaining bits of the RRCConnectionRequest message and the MAC PDU subheader corresponding to the MAC SDU. In the above two cases, there are two available bits, for example, the two bits make up the bit string b1b0, where b0 is the remaining bits in the RRC message, b1 is a reserved bit in the MAC PDU subheader, or b1 is the RRC message B0 is a reserved bit in the MAC PDU subheader. The way in which the two special strings indicate channel quality information can be as follows:

比特串b1b0Bit string b1b0	信道质量测量结果范围(以RSRP为例)Channel quality measurement result range (taking RSRP as an example)
0000	RSRP＜RSRP ₀ RSRP ＜ RSRP ₀
0101	RSRP ₀≤RSRP＜RSRP ₁ RSRP ₀ ≤RSRP ＜ RSRP ₁
1010	RSRP ₁≤RSRP＜RSRP ₂ RSRP ₁ ≤RSRP ＜ RSRP ₂
1111	RSRP ₂≤RSRP RSRP ₂ ≤RSRP

RSRP is a measurement result of the downlink channel quality measured by the terminal device, and RSRP ₀ , RSRP ₁ , and RSRP ₂ are constants, which can be specified by the protocol.

S820: Send MSG3.

In this method, the second indication information is carried by using the bits in the RRC message and bits in the MAC PDU subheader to indicate the use of the second indication information. The terminal device determines the range of the downlink channel quality measurement result, and determines the value of the bit string corresponding to the range (i.e. The second indication information), when sending MSG3, set the bits in the RRC message corresponding to the value of the determined bit string and the bits of the MAC PDU subheader to the corresponding values (the table above is taken as an example, if the bit string is set Is 10, the bit used in the RRC message is set to "1", the bit used in the MAC PDU subheader is set to "0"), and then the terminal device sends the corresponding MAC PDU (ie, MSG3) to the network device . After receiving the second instruction information, the network device can determine the range of the downlink channel quality measurement result. The network device can reasonably schedule resources for the terminal device to perform data transmission according to the determined range of the downlink channel quality measurement result. Resource utilization efficiency.

Example Nine (Method 300e).

Based on the method 300a, the present application also provides a method 300e. Specifically, the second indication information is carried in an LCID field or an extended logical channel identifier (extended LCID, eLCID) of a MAC PDU subheader corresponding to a MAC SDU. Domain, the following uses the LCID domain as an example.

When the UE sends MSG3, the LCID in the subheader corresponding to the CCCH and SDU of MSG3 indicates CCCH, as shown in the following table. The value of the LCID used to indicate the CCCH can be 00000, 01011, and 01100. Different values are used for different situations in which the CCCH is sent. As can be seen from the table below, the reserved LCIDs also have 01101-10011, a total of 7 values, and some or all of these 7 reserved LCIDs can be used to indicate the range of CCCH and downlink channel quality measurement results.

The instructions are shown in the following table (in bold, RSRP is used as an example):

索引index	LCID值LCID value
0000000000	CCCHCCCH
00001-0101000001-01010	逻辑信道标识(Identity of the logical channel)Logical channel identification (Identity of the logical channel)
0101101011	CCCHCCCH
0110001100	CCCHCCCH
0110101101	CCCH+RSRP＜RSRP ₀ CCCH + RSRP ＜ RSRP ₀
0111001110	CCCH+RSRP ₀≤RSRP＜RSRP ₁ CCCH + RSRP ₀ ≤RSRP ＜ RSRP ₁
0111101111	CCCH+RSRP ₁≤RSRP＜RSRP ₂ CCCH + RSRP ₁ ≤RSRP ＜ RSRP ₂
1000010000	CCCH+RSRP ₂≤RSRP＜RSRP ₃ CCCH + RSRP ₂ ≤RSRP ＜ RSRP ₃
1000110001	CCCH+RSRP ₃≤RSRP＜RSRP ₄ CCCH + RSRP ₃ ≤RSRP ＜ RSRP ₄

1001010010	CCCH+RSRP ₄≤RSRP＜RSRP ₅ CCCH + RSRP ₄ ≤RSRP ＜ RSRP ₅
1001110011	CCCH+RSRP ₅≤RSRP CCCH + RSRP ₅ ≤RSRP
1010010100	推荐比特率请求(Recommended bit rate query)Recommended bit rate request (Recommended bit rate query)
1010110101	半静态调度确认(SPS confirmation)Semi-static scheduling confirmation (SPS confirmation)
1011010110	截短侧行缓存状态报告(Truncated Sidelink BSR)Truncated Sideline Cache Status Report (Truncated Sidelink BSR)
1011110111	侧行缓存状态报告(Sidelink BSR)Sideline cache status report (Sidelink BSR)
1100011000	双连接功率余量报告(Dual Connectivity Power Headroom Report)Dual Connectivity Power Headroom Report
1100111001	扩展功率余量报告(Extended Power Headroom Report)Extended Power Headroom Report (Extended Power Headroom Report)
1101011010	功率余量报告(Power Headroom Report)Power Headroom Report
1101111011	小区无线网络临时标识(C-RNTI)Cell Radio Network Temporary Identification (C-RNTI)
1110011100	截短缓存状态报告(Truncated BSR)Truncated Buffer Status Report (Truncated BSR)
1110111101	短缓存状态报告(Short BSR)Short Buffer Status Report (Short BSR)
1111011110	长缓存状态报告(Long BSR)Long Buffer Status Report (Long BSR)
1111111111	冗余比特(Padding)Redundant bits (Padding)

In this method, the terminal device determines the range of the downlink channel quality measurement result using the partial status indicated by the 5 bits indicating the LCID (that is, the remaining 7 states, and the 5 bits can indicate a total of 32 states), and determines the range. The corresponding LCID index value (that is, the second indication information), when sending the MSG3, fill the determined LCID index value in the LCID field of the MAC PDU sub-pair, and then the terminal device sends the corresponding MAC PDU (ie, MSG3) to Internet equipment. After receiving the second instruction information, the network device can determine the range of the downlink channel quality measurement result. The network device can reasonably schedule resources for the terminal device to perform data transmission according to the determined range of the downlink channel quality measurement result, which improves the data transmission process. Resource utilization efficiency.

Example Ten (Method 900).

The present application also provides a method for transmitting downlink channel quality information. As shown in FIG. 10, method 1000 is applicable to the UP solution, and method 900 includes:

S910: Generate MSG3, where MSG3 includes a recovery identification field, and the recovery identification (ResumeID) field includes second indication information, and the second indication information is used to indicate a downlink channel quality measurement result.

S920: Send MSG3.

The execution method of the above method is, for example, a terminal device. In some communication scenarios, the terminal device may send a truncated resume ID (Truncated Resume ID) to facilitate the restoration of the RRC connection. The length of the truncated resume ID is, for example, 24 bits, and The size of the recovery identification field in MSG3 is, for example, 40 bits. Therefore, when the truncated recovery identification can be used, the remaining bits of the recovery identification field in MSG3 can also be used to carry other information. If the terminal device needs to send downlink channel quality information, the remaining bits of the recovery identification field can be used to send the downlink channel quality information. After the network device obtains the second indication information through the remaining bits of the recovery identification field, the downlink channel quality measurement result can be determined. Range, the network device reasonably schedules resources for terminal device to perform data transmission according to the determined range of the downlink channel quality measurement result, which improves the resource utilization efficiency in the data transmission process.

Optionally, before S901, the method 900 further includes: receiving first indication information, where the first indication information is used to instruct to report downlink channel quality information in a random access process.

Optionally, the first indication information is included in SI or RAR.

In the method 900, the first indication information has the same meaning as the first indication information in the

methods

200 and 800. For brevity, details are not described herein again.

Optionally, the recovery identification field of the MSG3 includes a truncated recovery identification (truncatedResumeID) and an early report (EarlyReport), and the second indication information is included in the early transmission report.

Optionally, the size of the recovery identification field is 40 bits, the early transmission report occupies all or part of the first 16 bits of the recovery identification field, and the truncated recovery identification occupies the last 24 bits of the recovery identification field. Bits. Alternatively, the truncated recovery identification length is M bits, which occupies the M bits of the recovery identification field, and all or part of the remaining 40-M bits are used to carry the early transmission report.

FIG. 10 shows a flowchart of sending and receiving downlink channel quality information based on the method 900 in the UP scheme.

Step 0: The eNB sends a system information block (system information block, SIB), which includes a useFullResumeID field, which is used to indicate that when the UE sends an RRCConnectionResumeRequest, the resumeIdentity is a 40-bit recovery identifier. If the useFullResumeID field is not included, the resumeIdentity uses 24 bits The truncated identifier of the identifier, where the identifier of 40 bits is resumeID and the identifier of 24 bits is truncatedResumeID. The SI also includes enabling indication information (that is, first indication information), which is used to instruct the UE to report channel quality information through MSG3.

For example, in addition to broadcasting the useFullResumeID, the eNB can also broadcast the EarlyReport field to indicate whether the UE reports downlink channel quality information in advance. The indications of truncatedResumeID and EarlyReport have the following three situations, where useFullResumeID is false, which indicates that the UE does not use a 40bits resume ID. Then the UE uses a 24-bit truncated resume ID. At this time, the UE ignores the EarlyReport field and does not report downlink channel quality information during the random access process. useFullResumeID is true, which indicates that the UE uses a 40bits resume ID. At this time, if EarlyReport is false, it indicates that the UE does not report uplink channel quality information during random access, that is, the downlink channel quality information is not reported in advance, and the UE uses a 40bits resume ID. Make an RRC connection restoration request as resumeIdentity; if EarlyReport is true, it instructs the UE to report uplink channel quality information during random access, that is, to report downlink channel quality information in advance, then the UE uses a 24-bit truncated ID as the resumeIdentity to make an RRC connection restoration request, And use all or part of the remaining bits to send downlink channel quality information. Among them, true may be indicated by the presence of the IE in the broadcast message, and false may be indicated by the absence of the IE in the broadcast message.

Step 1: The UE sends a preamble to the eNB. Here, the preamble sent by the UE and the time-frequency resources used to send the preamble are broadcast to the UE by the eNB before step 1. The UE selects the preamble and / or time-frequency resources used to instruct the uplink data to be transmitted in advance according to the broadcast message.

Step 2: When the eNB receives the above-mentioned Preamble, it sends an RAR to the UE, which contains uplink scheduling information (UL Grant) and timing advance (TA). The UL Grant contains more resources, which can transmit MACs below 1000 bits PDU.

Step 3: The UE sends MSG3 to the eNB. MSG3 contains an RRCConnectionResumeRequest message, where the RRC message is as follows.

Step 4: The eNB sends an RRCConnectionRelease message to the UE.

The method for sending downlink channel quality information provided in this application is described in detail from the perspective of a terminal device, and the method for receiving downlink channel quality information provided in this application is described from the perspective of a network device.

As shown in FIG. 11, the method may be executed by a network device. The network device obtains rough downlink channel quality information through one bit, and is applicable to a non-EDT scenario, a UL-EDT scenario, and a DL-EDT scenario. The method 1100 includes:

S1110: Receive MSG3.

S1120: Acquire second instruction information, which is carried in a bit of a MAC PDU subheader corresponding to the MAC SDU of the MSG3, and the second instruction information is used to indicate a downlink channel quality measurement result.

The acquiring the second indication information is, for example, acquiring the second indication information from the received signal by demodulation and decoding.

Those skilled in the art can clearly understand that in the method 1100, the first instruction information and the second instruction information may be equal to the first instruction information and the second instruction information in the method 200, and the network device receives the second instruction including the second instruction. The information MSG3 method corresponds to the method in which the terminal device in the method 200 sends the MSG3 containing the second indication information, and for the sake of brevity, it will not be repeated here.

Therefore, the network device determines the downlink channel quality measurement result after receiving the second instruction information, so that the terminal device can accurately schedule data transmission based on the downlink channel quality measurement result, which improves the resource utilization efficiency in the data transmission process. The scheme only needs one bit to indicate the downlink channel quality, and has the advantage of low signaling overhead.

Optionally, the bits of the MAC PDU subheader corresponding to the MAC SDU of the MSG3 are one or more of the following bits:

Bits in the L domain, bits in the R domain, and bits in the LCID domain.

Optionally, before S1110, the method 1100 further includes:

Sending first indication information, where the first indication information is used to instruct to report downlink channel quality information in a random access process.

Optionally, the first indication information is included in SI or RAR.

In the following, another method for receiving downlink channel quality information provided in the present application will be described in detail. Compared to method 1100, in the method shown in FIG. 12, the network device obtains downlink channel quality information through more bits, and can obtain more accurate downlink channel quality information. Method 1200 includes:

S1210, receive MSG3, MSG3 includes RRC message

S1220. Obtain second instruction information. The second instruction information is carried in the remaining bits of the RRC message and the bits of the MAC PDU subheader corresponding to the MAC SDU of the MSG3. The second instruction information is used to indicate a downlink channel quality measurement result.

Those skilled in the art can clearly understand that in the method 1200, the second instruction information may be equal to the second instruction information in the method 800, and the method for the network device to receive the MSG3 is similar to the method for the terminal device to send the MSG3 in the method 800. Correspondence, for brevity, we will not repeat them here.

Therefore, the network device determines the downlink channel quality measurement result after receiving the MSG3, so that the terminal device can be accurately scheduled for data transmission based on the downlink channel quality measurement result, which improves the resource utilization efficiency in the data transmission process. In addition, the above solution uses multiple The bits indicate the range of the downlink channel quality measurement result, and can accurately indicate the range of the downlink channel quality measurement result.

Optionally, the bits of the MAC PDU subheader corresponding to the MAC SDU of MSG3 are bits of the L domain.

The above MAC SDU may be a common control channel (CCCH) SDU encapsulated with RRC messages. When the terminal device has uplink data to be transmitted, the uplink data may be encapsulated in a dedicated service channel (DTCH) of the MSG3. In the SDU, at this time, the size of the L field of the MAC PDU subheader corresponding to the CCCH and SDU encapsulated with the RRC message is 7 bits. Because the size of the RRC message is fixed, only 3 bits in the above L field can indicate the RRC message. 4 bits can be used to carry downlink channel quality information.

Optionally, the bits of the MAC PDU subheader corresponding to the MAC SDU of MSG3 are bits of the R domain.

When the MAC SDU is a CCCH SDU encapsulated with an RRC message and MSG3 contains uplink data, the R field of the MAC PDU subheader corresponding to CCCH SDU and DTCH SDU has a total of 2 available fields. In addition, when the RRC message is an RRC connection request RRCConnectionRequest), the RRC connection request also includes an available spare bit. In addition to using the 4-bit L field, the terminal device may also use all or part of the two R field bits to carry downlink channel quality information.

Optionally, the bits of the MAC PDU subheader corresponding to the MAC SDU of MSG3 are bits in the logical channel identifier (LCID) domain.

The downlink channel quality information may also be carried in the LCID field of the MAC PDU subheader corresponding to the MAC and SDU encapsulated with the RRC message, where this solution may be implemented alone or in combination with other optional solutions in method 1200.

For specific implementation of the foregoing solution, reference may be made to the description in the method 800, and details are not described herein again.

FIG. 13 shows still another method for receiving downlink channel quality information provided by this application. The method 1300 includes:

S1310. Receive MSG3.

S1320: Obtain second instruction information, where the second instruction information is carried in a recovery identity field of the MSG3, and the second instruction information is used to indicate a downlink channel quality measurement result.

Those skilled in the art can clearly understand that in the method 1300, the second instruction information may be equal to the second instruction information in the method 900, and the method for the network device to receive the MSG3 is similar to the method for the terminal device to send the MSG3 in the method 900. Correspondence, for brevity, we will not repeat them here.

In some communication scenarios, the terminal device may send a short recovery identifier to facilitate wireless bearer recovery. The length of the short recovery identifier is, for example, 24 bits, and the size of the recovery identifier field in MSG3 is, for example, 40 bits. Therefore, in MSG3, The recovery identity field can also be used to carry other information. If the terminal device needs to send downlink channel quality information, the idle bit in the recovery identification field can be used to send the downlink channel quality information. The network device can determine the downlink channel quality measurement result after obtaining the second indication information by recovering the idle bit in the identification field. The downlink channel quality measurement results meet the transmission requirements, and downlink data can be transmitted through MSG4, thereby improving resource utilization during small data transmission.

Optionally, before S1310, method 1300 further includes:

Optionally, the first indication information is included in SI or RAR.

The example of the method for sending and receiving downlink channel quality information provided in this application is described in detail above. It can be understood that, in order to realize the above functions, the terminal device and the network device include a hardware structure and / or a software module corresponding to each function. Those skilled in the art should easily realize that, with reference to the units and algorithm steps of each example described in the embodiments disclosed herein, this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is performed by hardware or computer software-driven hardware depends on the specific application of the technical solution and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

This application can divide the functional units of the terminal device and the network device according to the foregoing method examples. For example, each functional unit can be divided corresponding to each function, or two or more functions can be integrated into one processing unit. The above integrated unit may be implemented in the form of hardware or in the form of software functional unit. It should be noted that the division of the units in this application is schematic, and it is only a logical function division. In actual implementation, there may be another division manner.

In the case of using an integrated unit, FIG. 14 shows a possible structural diagram of a terminal device involved in the foregoing embodiment. The terminal device 1400 includes a processing unit 1401, a receiving unit 1402 (optional), and a sending unit 1403. The processing unit 1401 is configured to control and manage the actions of the terminal device 1400. For example, the processing unit 1401 is configured to support the terminal device 1400 to perform each step of FIG. 2 and / or other processes used in the technology described herein. The receiving unit 1402 and the sending unit 1403 are configured to support communication between the terminal device 1400 and other communication devices, for example, communication with a network device. The terminal device 1400 may further include a storage unit for storing program codes and data of the terminal device 1400.

For example, the processing unit 1401 is configured to perform generation of MSG3. The bits of the MAC PDU subheader corresponding to the MAC and SDU of the MSG3 carry the second indication information, and the second indication information is used to indicate a downlink channel quality measurement result.

The processing unit 1401 controls the sending unit 1403 to execute: sending MSG3.

The processing unit 1401 may be a processor or a controller, for example, it may be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (application-specific integrated circuit). , ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processor may also be a combination that implements computing functions, such as a combination including one or more microprocessors, a combination of a DSP and a microprocessor, and so on. The receiving unit 1402 and the transmitting unit 1403 are, for example, transceivers. The storage unit may be a memory.

When the processing unit 1401 is a processor, the receiving unit 1402 and the sending unit 1403 are transceivers, and the storage unit is a memory, the terminal device involved in this application may be the terminal device shown in FIG. 15.

Referring to FIG. 15, the terminal device 1500 includes a processor 1501, a transceiver 1502, and a memory 1503 (optional). Among them, the processor 1501, the transceiver 1502, and the memory 1503 can communicate with each other through an internal connection path, and transfer control and / or data signals.

Those skilled in the art can clearly understand that, for the convenience and brevity of the description, for the specific working process of the devices and units described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described herein.

The terminal device 1400 and the terminal device 1500 provided in this application measure the downlink channel quality and obtain the downlink channel quality measurement result. For example, if the downlink channel quality measurement result is less than the downlink channel quality threshold value obtained from the network device, an instruction is sent to the downlink. If the channel quality measurement result is less than the second indication information of the downlink channel quality threshold; if the channel quality measurement result is greater than the downlink channel quality threshold obtained from the network device, sending an indication that the downlink channel quality measurement result is greater than the downlink channel quality threshold A second indication of the value. After receiving the second instruction information, the network device can determine the channel quality of the downlink channel, so that the network device can accurately schedule the terminal device for data transmission according to the channel quality of the downlink channel, thereby improving the resource utilization efficiency in the data transmission process.

In the case of using an integrated unit, FIG. 16 shows a possible structural diagram of a terminal device involved in the foregoing embodiment. The terminal device 1600 includes a processing unit 1601, a receiving unit 1602 (optional), and a sending unit 1603. The processing unit 1601 is configured to control and manage the actions of the terminal device 1600. For example, the processing unit 1601 is configured to support the terminal device 1600 to perform each step of FIG. 8 and / or other processes for the technology described herein. The receiving unit 1602 and the sending unit 1603 are configured to support communication between the terminal device 1600 and other communication devices, for example, communication with a network device. The terminal device 1600 may further include a storage unit for storing program code and data of the terminal device 1600.

For example, the processing unit 1601 is configured to execute: generate MSG3, MSG3 includes an RRC message, and the remaining bits of the RRC message and the bits of the MAC PDU subheader corresponding to the MAC SDU of MSG3 carry the second indication information, and the second indication information is used to indicate the downlink channel Quality measurement results.

The processing unit 1601 controls the sending unit 1603 to execute: sending MSG3.

The processing unit 1601 may be a processor or a controller. For example, the processing unit 1601 may be a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processor may also be a combination that implements computing functions, such as a combination containing one or more microprocessors, a combination of a DSP and a microprocessor, and so on. The receiving unit 1602 and the transmitting unit 1603 are, for example, transceivers. The storage unit may be a memory.

When the processing unit 1601 is a processor, the receiving unit 1602 and the sending unit 1603 are transceivers, and the storage unit is a memory, the terminal device involved in this application may be the terminal device shown in FIG. 17.

Referring to FIG. 17, the terminal device 1700 includes a processor 1701, a transceiver 1702, and a memory 1703 (optional). Among them, the processor 1701, the transceiver 1702, and the memory 1703 can communicate with each other through an internal connection path, and transfer control and / or data signals.

The terminal device 1600 and the terminal device 1700 provided in this application can send indication information indicating the range of the downlink channel quality measurement result through the idle field in the MAC PDU subheader of the MSG3, and the network device can determine the downlink channel after obtaining the indication information. The scope of the quality measurement result, the network device reasonably schedules resources for terminal device to perform data transmission according to the determined range of the downlink channel quality measurement result, which improves the resource utilization efficiency in the data transmission process.

In the case of using an integrated unit, FIG. 18 shows a possible structural diagram of a terminal device involved in the foregoing embodiment. The terminal device 1800 includes a processing unit 1801, a receiving unit 1802 (optional), and a sending unit 1803. The processing unit 1801 is configured to control and manage the actions of the terminal device 1800. For example, the processing unit 1801 is configured to support the terminal device 1800 to perform each step of FIG. 9 and / or other processes used in the technology described herein. The receiving unit 1802 and the sending unit 1803 are configured to support communication between the terminal device 1800 and other communication devices, for example, communication with a network device. The terminal device 1800 may further include a storage unit for storing program codes and data of the terminal device 1800.

For example, the processing unit 1801 is configured to execute: generating MSG3, and the MSG3's ResumeID field includes second indication information, and the second indication information is used to indicate a downlink channel quality measurement result.

The processing unit 1801 controls the sending unit 1803 to execute: sending MSG3.

The processing unit 1801 may be a processor or a controller. For example, the processing unit 1801 may be a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processor may also be a combination that implements computing functions, such as a combination including one or more microprocessors, a combination of a DSP and a microprocessor, and so on. The receiving unit 1802 and the transmitting unit 1803 are, for example, transceivers. The storage unit may be a memory.

When the processing unit 1801 is a processor, the receiving unit 1802 and the sending unit 1803 are transceivers, and the storage unit is a memory, the terminal device involved in this application may be the terminal device shown in FIG. 19.

Referring to FIG. 19, the terminal device 1900 includes a processor 1901, a transceiver 1902, and a memory 1903 (optional). Among them, the processor 1901, the transceiver 1902, and the memory 1903 can communicate with each other through an internal connection path, and transfer control and / or data signals.

The terminal device 1800 and the terminal device 1900 provided in this application use the early transmission report to send indication information indicating the range of the downlink channel quality measurement result. The early transmission report is carried in the recovery identifier field including the truncated recovery identifier, and the network device passes The early transmission report can determine the downlink channel quality after obtaining the range of the channel quality measurement result of the downlink channel. If the downlink channel quality meets the transmission requirements, the downlink data can be transmitted through MSG4, thereby improving the resource utilization rate during small data transmission.

In the case of using an integrated unit, FIG. 20 shows a possible structural diagram of a network device involved in the foregoing embodiment. The network device 2000 includes a processing unit 2001, a receiving unit 2002, and a sending unit 2003 (optional). The processing unit 2001 is used to control and manage the actions of the network device 2000. For example, the processing unit 2001 is used to support the network device 2000 to perform each step of FIG. 11 and / or other processes used in the technology described herein. The receiving unit 2002 and the sending unit 2003 are used to support communication between the network device 2000 and other communication devices, for example, communication with a terminal device. The network device 2000 may further include a storage unit for storing program code and data of the network device 2000.

For example, the processing unit 2001 controls the receiving unit 2002 to perform: receiving MSG3.

The processing unit 2001 is configured to perform: acquiring second instruction information, which is carried in a bit of a MAC PDU subheader corresponding to the MAC SDU of the MSG3, and the second instruction information is used to indicate a downlink channel quality measurement result.

The processing unit 2001 may be a processor or a controller. For example, the processing unit 2001 may be a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processor may also be a combination that implements computing functions, such as a combination including one or more microprocessors, a combination of a DSP and a microprocessor, and so on. The receiving unit 2002 and the transmitting unit 2003 are, for example, transceivers. The storage unit may be a memory.

When the processing unit 2001 is a processor, the receiving unit 2002 and the sending unit 2003 are transceivers, and the storage unit is a memory, the network device involved in this application may be the network device shown in FIG. 21.

Referring to FIG. 21, the network device 2100 includes a processor 2101, a transceiver 2102, and a memory 2103 (optional). The processor 2101, the transceiver 2102, and the memory 2103 can communicate with each other through an internal connection path, and transfer control and / or data signals.

The network device 2000 and the network device 2100 provided in this application instruct the terminal device to report downlink channel quality information through the first instruction information, and determine the range of the downlink channel quality measurement value after receiving the second instruction information, so that the downlink channel quality can be determined according to the downlink channel quality. The range of the measured values accurately schedules terminal equipment for data transmission, which improves resource utilization efficiency in the data transmission process.

In the case of using an integrated unit, FIG. 22 shows a possible structural diagram of a network device involved in the foregoing embodiment. The network device 2200 includes a processing unit 2201, a receiving unit 2202, and a sending unit 2203 (optional). The processing unit 2201 is configured to control and manage the actions of the network device 2200. For example, the processing unit 2201 is configured to support the network device 2200 to perform each step of FIG. 12 and / or other processes used in the technology described herein. The receiving unit 2202 and the sending unit 2203 are configured to support communication between the network device 2200 and other communication devices, for example, communication with a terminal device. The network device 2200 may further include a storage unit for storing program code and data of the network device 2200.

For example, the processing unit 2201 controls the receiving unit 2202 to perform: receiving MSG3, and MSG3 includes an RRC message.

The processing unit 2201 is configured to execute: obtaining second instruction information, the second instruction information is carried in the remaining bits of the RRC message and the bits of the MAC PDU subheader corresponding to the MAC SDU of the MSG3, and the second instruction information is used to indicate downlink channel quality measurement result.

The processing unit 2201 may be a processor or a controller. For example, the processing unit 2201 may be a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processor may also be a combination that implements computing functions, such as a combination including one or more microprocessors, a combination of a DSP and a microprocessor, and so on. The receiving unit 2202 and the transmitting unit 2203 are, for example, transceivers. The storage unit may be a memory.

When the processing unit 2201 is a processor, the receiving unit 2202 and the sending unit 2203 are transceivers, and the storage unit is a memory, the network device involved in this application may be the network device shown in FIG. 23.

Referring to FIG. 23, the network device 2300 includes a processor 2301, a transceiver 2302, and a memory 2303 (optional). The processor 2301, the transceiver 2302, and the memory 2303 can communicate with each other through an internal connection path, and transfer control and / or data signals.

The network device 2200 and the network device 2300 provided in this application instruct the terminal device to report downlink channel quality information through the first instruction information, and determine the range of the downlink channel quality measurement result after receiving the MSG3, so that the downlink channel quality measurement result can be determined according to the The scope accurately schedules terminal equipment for data transmission, which improves resource utilization efficiency in the data transmission process.

In the case of using an integrated unit, FIG. 24 shows a possible structural diagram of a network device involved in the foregoing embodiment. The network device 2400 includes a processing unit 2401, a receiving unit 2402, and a sending unit 2403 (optional). The processing unit 2401 is configured to control and manage the actions of the network device 2400. For example, the processing unit 2401 is configured to support the network device 2400 to perform each step of FIG. 13 and / or other processes used in the technology described herein. The receiving unit 2402 and the sending unit 2403 are configured to support communication between the network device 2400 and other communication devices, such as communication with a terminal device. The network device 2400 may further include a storage unit for storing program code and data of the network device 2400.

For example, the processing unit 2401 controls the receiving unit 2402 to perform: receiving MSG3.

The processing unit 2401 is configured to execute: acquiring second instruction information, the second instruction information being carried in a recovery identification field of the MSG3, and the second instruction information used to indicate a downlink channel quality measurement result.

The processing unit 2401 may be a processor or a controller. For example, the processing unit 2401 may be a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processor may also be a combination that implements computing functions, such as a combination including one or more microprocessors, a combination of a DSP and a microprocessor, and so on. The receiving unit 2402 and the transmitting unit 2403 are, for example, transceivers. The storage unit may be a memory.

When the processing unit 2401 is a processor, the receiving unit 2402 and the sending unit 2403 are transceivers, and the storage unit is a memory, the network device involved in this application may be the network device shown in FIG. 25.

Referring to FIG. 25, the network device 2500 includes: a processor 2501, a transceiver 2502, and a memory 2503 (optional). Among them, the processor 2501, the transceiver 2502, and the memory 2503 can communicate with each other through an internal connection path, and transfer control and / or data signals.

The network device 2400 and the network device 2500 provided in this application can determine the downlink channel quality after obtaining the range of the downlink channel quality measurement value through the early transmission report. If the downlink channel quality meets the transmission requirements, the downlink data can be transmitted through MSG4, thereby improving the Resource utilization during small data transfer.

The device embodiment corresponds to the method embodiment completely. For example, the communication unit executes the obtaining step in the method embodiment. All steps other than the obtaining step and the sending step may be performed by a processing unit or a processor. For the function of the specific unit, reference may be made to the corresponding method embodiment, which will not be described in detail.

In each embodiment of the present application, the size of the sequence number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of this application.

In addition, the term "and / or" in this article is only an association relationship describing the associated object, which means that there can be three kinds of relationships, for example, A and / or B can mean: A exists alone, and A and B exist simultaneously, There are three cases of B alone. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

The steps of the method or algorithm described in combination with the disclosure of this application may be implemented in a hardware manner, or may be implemented in a manner in which a processor executes software instructions. Software instructions can be composed of corresponding software modules, which can be stored in random access memory (RAM), flash memory, read-only memory (ROM), and erasable programmable read-only memory ( erasable (programmable ROM, EPROM), electrically erasable programmable read-only memory (EPROM), registers, hard disks, mobile hard disks, read-only optical disks (CD-ROMs), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be an integral part of the processor. The processor and the storage medium may reside in an ASIC.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions according to the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted through the computer-readable storage medium. The computer instructions may be transmitted from a website site, computer, server, or data center through wired (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) Another website site, computer, server, or data center for transmission. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, and the like that includes one or more available medium integration. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital versatile disc (DVD), or a semiconductor medium (for example, a solid state disk (SSD)) Wait.

The specific implementation manners described above further describe the purpose, technical solution, and beneficial effects of the present application in detail. It should be understood that the foregoing descriptions are merely specific implementation manners of the present application, and are not intended to limit the present application. The scope of protection, any modification, equivalent replacement, or improvement made on the basis of the technical solution of this application shall be included in the scope of protection of this application.

Claims

A method for transmitting downlink channel quality information, wherein the method includes:

A message MSG3 is generated, and the bits of the MAC PDU subheader of the media access control protocol data unit MAC and SDU corresponding to the media access control service data unit MAC of the MSG3 carry the second indication information, and the second indication information is used to indicate a downlink channel quality measurement result ;

Sending the MSG3.
The method according to claim 1, wherein the bits of the MAC PDU subheader corresponding to the MAC SDU of the MSG3 are one or more of the following bits:

The bits of the L domain, the bits of the R domain, and the logical channel identify the bits of the LCID domain.
The method according to claim 1 or 2, wherein before the generating message MSG3, the method further comprises:

Receive first indication information, where the first indication information is used to instruct to report downlink channel quality information in a random access process.
The method according to claim 3, wherein the first indication information is included in a system information SI or a random access response RAR.
A method for transmitting downlink channel quality information, wherein the method includes:

A message MSG3 is generated. The MSG3 includes a radio resource control RRC message, and the remaining bits of the RRC message and the bits of the medium access control protocol data unit MAC PDU subheader corresponding to the MSG3 medium access control service data unit MAC SDU carry the first Two indication information, where the second indication information is used to indicate a downlink channel quality measurement result;

Sending the MSG3.
The method according to claim 5, wherein the bits of the MAC PDU subheader corresponding to the MAC SDU of the MSG3 are one or more of the following bits:

The bits of the L domain, the bits of the R domain, and the logical channel identify the bits of the LCID domain.
The method according to claim 5 or 6, wherein before the generating message MSG3, the method further comprises:

Receive first indication information, where the first indication information is used to instruct to report downlink channel quality information in a random access process.
The method according to claim 7, wherein the first indication information is included in a system information SI or a random access response RAR.
A method for transmitting downlink channel quality information, wherein the method includes:

Generating a message MSG3, where the recovery identification field of the MSG3 includes second indication information, and the second indication information is used to indicate a downlink channel quality measurement result;

Sending the MSG3.
The method according to claim 9, wherein the recovery identification field of the MSG3 includes a truncated recovery identification and an early transmission report, and the second indication information is included in the early transmission report.
The method according to claim 9, wherein the size of the recovery identification field is 40 bits, wherein the early transmission report occupies all or part of the first 16 bits of the recovery identification field, and the truncation The short recovery identifier occupies the last 24 bits of the recovery identifier field.
The method according to any one of claims 9 to 11, wherein before the generating message MSG3, the method further comprises:

Receive first indication information, where the first indication information is used to instruct to report downlink channel quality information in a random access process.
The method according to claim 12, wherein the first indication information is included in a system information SI or a random access response RAR.
A method for acquiring downlink channel quality information, wherein the method includes:

Receive message MSG3;

Acquire second instruction information, where the second instruction information is carried in a bit of a MAC PDU subheader of a medium access control protocol data unit MAC and a PDU corresponding to the medium access control service data unit MAC of the MSG3, and the second instruction information is used for Indicates the downlink channel quality measurement result.
The method according to claim 14, wherein the bits of the MAC PDU subheader corresponding to the MAC SDU of the MSG3 are one or more of the following bits:

The bits of the L domain, the bits of the R domain, and the logical channel identify the bits of the LCID domain.
The method according to claim 14 or 15, wherein before the receiving the message MSG3, the method further comprises:

Sending first indication information, where the first indication information is used to instruct to report downlink channel quality information in a random access process.
The method according to claim 16, wherein the first indication information is included in a system information SI or a random access response RAR.
A method for acquiring downlink channel quality information, wherein the method includes:

Receiving a message MSG3, where the MSG3 includes a radio resource control RRC message;

Acquiring second instruction information, where the second instruction information is carried in the remaining bits of the RRC message and the bits of the MAC PDU subheader of the MAC PDU corresponding to the media access control service data unit MAC SDU of the MSG3 The second indication information is used to indicate a downlink channel quality measurement result.
The method according to claim 18, wherein the bits of the MAC PDU subheader corresponding to the MAC SDU of the MSG3 are one or more of the following bits:

The bits of the L domain, the bits of the R domain, and the logical channel identify the bits of the LCID domain.
The method according to claim 18 or 19, wherein before the receiving the message MSG3, the method further comprises:

Sending first indication information, where the first indication information is used to instruct to report downlink channel quality information in a random access process.
The method according to claim 20, wherein the first indication information is included in a system information SI or a random access response RAR.
A method for acquiring downlink channel quality information, wherein the method includes:

Receive message MSG3;

Acquire second instruction information, where the second instruction information is carried in the recovery identity field of the MSG3, and the second instruction information is used to indicate a downlink channel quality measurement result.
The method according to claim 22, wherein the recovery identification field of the MSG3 includes a truncated recovery identification and an early transmission report, and the second indication information is included in the early transmission report.
The method according to claim 23, wherein the size of the recovery identification field is 40 bits, wherein the early transmission report occupies all or part of the first 16 bits of the recovery identification field, and the truncation The short recovery identifier occupies the last 24 bits of the recovery identifier field.
The method according to any one of claims 22 to 24, wherein before the receiving the message MSG3, the method further comprises:

Sending first indication information, where the first indication information is used to instruct to report downlink channel quality information in a random access process.
The method according to claim 25, wherein the first indication information is included in a system information SI or a random access response RAR.
A terminal device, comprising: a processor, a memory, and a transceiver,

The processor is configured to read and execute instructions from the memory to control the transceiver to implement the method according to any one of claims 1-13.
An access network device, comprising: a processor, a memory, and a transceiver,

The processor is configured to read and execute instructions from the memory to control the transceiver to implement the method according to any one of claims 14-26.