CN114389767A

CN114389767A - Information transmission method and device

Info

Publication number: CN114389767A
Application number: CN202011111915.1A
Authority: CN
Inventors: 沈兴亚
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2022-04-22

Abstract

The application discloses an information transmission method and device, wherein the method comprises the following steps: if first feedback information corresponding to first data information sent by a management node in a first COT falls outside the first COT, a terminal node transmits the first feedback information in a second COT, wherein the second COT is a COT after the first COT. By adopting the method and the device, the success rate of transmitting the feedback information can be improved.

Description

Information transmission method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to an information transmission method and apparatus.

Background

When the vehicular wireless short-range communication system operates on an unlicensed spectrum, it is necessary to meet specifications on the unlicensed spectrum, such as Listen Before Talk (LBT). On the unlicensed spectrum, the time that the management node occupies the spectrum after LBT is successful is a Channel Occupancy Time (COT). In one COT, a management node may send data information to a terminal node, and the terminal node sends hybrid automatic repeat reQuest (HARQ) -Acknowledgement Character (ACK) feedback information to a management node after receiving the data information. For the management node, if the HARQ-ACK feedback information sent by the terminal node is not received, that is, Discontinuous Transmission (DTX) occurs, the management node considers that a Negative Acknowledgement Character (NACK) is received, so that retransmission occurs, and throughput is reduced. Therefore, how to improve the success rate of sending the HARQ-ACK feedback information by the terminal node is a technical problem to be solved.

Disclosure of Invention

The embodiment of the application provides an information transmission method and device.

In a first aspect, an embodiment of the present application provides an information transmission method, where the method includes:

if first feedback information corresponding to first data information sent by a management node in a first COT falls outside the first COT, a terminal node transmits the first feedback information in a second COT, wherein the second COT is a COT after the first COT.

In a second aspect, an embodiment of the present application provides an information transmission method, where the method includes:

if first feedback information corresponding to first data information sent by a management node in a first COT falls outside the first COT, the management node sends second scheduling data control information in a second COT, wherein the scheduling data control information is used for indicating that the first feedback information is transmitted in the second COT, and the second COT is a COT after the first COT.

In a third aspect, an embodiment of the present application provides an information transmission apparatus, which is applied to a terminal node, and the apparatus includes:

a transmission unit, configured to transmit first feedback information in a second COT if first feedback information corresponding to first data information sent by a management node in a first COT falls outside the first COT, where the second COT is a COT subsequent to the first COT.

In a fourth aspect, an embodiment of the present application provides an information transmission apparatus, which is applied to an associated node, and the apparatus includes:

a transmitting unit, configured to send second scheduling data control information in a second COT if first feedback information corresponding to first data information sent by a management node in a first COT falls outside the first COT, where the scheduling data control information is used to indicate that the first feedback information is transmitted in the second COT, and the second COT is a COT after the first COT.

In a fifth aspect, the present application provides a communication device, including a processor, a memory, a transceiver, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, where the program includes instructions for performing the steps in the method according to the first aspect of the present application, or where the program includes instructions for performing the steps in the method according to the second aspect of the present application.

In a sixth aspect, the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program enables a computer to perform part or all of the steps described in the method according to the first aspect of the present application, or the computer program enables a computer to perform part or all of the steps described in the method according to the second aspect of the present application.

In a seventh aspect, the present application provides a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program, the computer program being operable to cause a computer to perform part or all of the steps described in the method according to the first aspect of the present application, or the computer program being operable to cause a computer to perform part or all of the steps described in the method according to the second aspect of the present application. The computer program product may be a software installation package.

It can be seen that, in this embodiment of the application, if first feedback information corresponding to first data information sent by a management node in a first COT falls outside the first COT, a terminal node transmits the first feedback information in a COT after the first COT. Because the terminal node needs to perform multiple LBT before sending the feedback information outside the COT, and the management node in the COT can ensure that the terminal node only needs to perform one LBT before sending the feedback information, compared with the multiple LBT, the success rate of one LBT channel competition is high, the feedback information is sent again in the COT outside the COT, and the success rate of feedback information transmission can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of a communication system provided in an embodiment of the present application;

fig. 2 is a schematic flowchart of an information transmission method according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of an information transmission apparatus 300 according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of an information transmission apparatus 400 according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a communication device 500 according to an embodiment of the present application.

Detailed Description

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application. The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions.

Referring to fig. 1, fig. 1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application, where the communication system includes a management node and a terminal node. As shown in fig. 1, the management node may communicate with the end nodes. The communication system may be a global system for mobile Communication (CSM), a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a Worldwide Interoperability for Microwave Access (WiMAX) system, a Long Term Evolution (LTE) system, a 5G communication system (e.g., new radio, NR)), a communication system in which a plurality of communication technologies are merged (e.g., a communication system in which an LTE technology and an NR technology are merged), a vehicle-mounted wireless short-range communication system, or a subsequent evolution communication system. The form and number of the management node and the terminal node shown in fig. 1 are only examples, and do not limit the embodiments of the present application.

The terminal node in the embodiment of the application is a device with a wireless communication function, and can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal node may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in smart home (smart home), and the like. The end node may also be a handheld device with wireless communication capabilities, a vehicle mounted device, a wearable device, a computer device or other processing device connected to a wireless modem, etc. The end nodes in different networks may be called different names, for example: a user equipment, an access Terminal, a subscriber unit, a subscriber station, a mobile station, a remote Terminal, a mobile device, a user Terminal, a wireless communication device, a user agent or user equipment, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a user equipment in a 5G network or a future evolution network, a Node (T Node) in a vehicle-mounted wireless short-range communication system that receives data scheduling information and transmits data according to the data scheduling information, and the like.

The management node in the embodiment of the present application is a device deployed in a radio access network to provide a wireless communication function. For example, the management node may be a Radio Access Network (RAN) device on an Access Network side in a cellular Network, where the RAN device is a device for accessing a user equipment to a wireless Network, and includes but is not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (e.g., Home evolved Node B, or Home Node B, HNB), baseband Unit (BBU), Management Entity (Mobility Management Entity, MME); for another example, the management node may also be a node device in a Wireless Local Area Network (WLAN), such as an Access Controller (AC), a gateway, or a WIFI Access Point (AP); for another example, the management node may also be a transmission node or a transmission reception point (TRP or TP) in the NR system; for another example, the management Node may also be a Node (G Node) that transmits data scheduling information in the vehicle-mounted wireless short-range communication system.

For ease of understanding, the relevant background to which this document refers will be described below.

And when the terminal node receives the second type of data information sent by the management node in the Nth superframe, the terminal node feeds back the ACK feedback information by using the ACK feedback information resource corresponding to the data in the (N +1) th superframe.

Each 1 bit of N ACK feedback bits corresponding to 1 Transport Block (TB) transmitted by the management node is transmitted using 1/M comb subcarrier group of 1 overhead symbol on a 20MHz bandwidth, where M is 1, 2, and 4. The time domain resource of ACK feedback of one TB comprises N/X +1 overhead symbols, wherein X is the feedback bit number of each symbol indicated by dynamic scheduling data control information or high-layer signaling. In the N/X +1 overhead symbols, the first overhead symbol transmits a demodulation reference signal (DMRS) for the ACK feedback information, and the subsequent N/X overhead symbols transmit corresponding ACK feedback information. And the ACK feedback information of N bits corresponding to the 1 TB is transmitted by using continuous comb subcarrier groups on continuous overhead symbols in sequence. And the DMRS of the ACK feedback information of different TBs is subjected to frequency division multiplexing according to the comb subcarrier groups used by the ACK feedback information of each TB.

A resource used by an end node to send ACK feedback information includes resource elements (k, l) in # n radio frame in a superframe:

when the Code Block Group (CBG) corresponding to the ACK feedback bit is received correctly and the ACK feedback information is ACK, the terminal node maps the complex value a of the resource element (k, l) in the # n wireless frame in the superframe_k,l＝r_n,l(k)；

When the CBG corresponding to the ACK feedback bit is received with errors, the ACK feedback information is NACK, and the terminal node maps a complex value a to a resource element (k, l) in a # n wireless frame in the superframe_k,l＝-r_n,l(k)；

Wherein r is_n,l(k) A pseudo-random quadrature phase shift coding (QPSK) sequence.

DMRS transmission of ACK feedback information of a terminal node uses resources in a terminal link overhead symbol, belongs to overhead transmission, and a specific resource is indicated by terminal node-specific ACK resource pool information (truncated ACK resource set conf).

And the management node of the communication domain receives the DMRS of the ACK feedback information sent by other nodes in the communication domain, and is used for estimating a transmission channel of the ACK feedback information sent by other nodes by the management node.

The resources used by the DMRS for sending the ACK feedback information by a terminal node comprise resource elements (k, l) in # n wireless frame in a superframe, and the complex value a mapped by the resource elements (k, l) in the # n wireless frame in the superframe by the terminal node is a complex value a_k,l＝r_n,l(k) Wherein r is_n,l(k) Is a pseudo-random QPSK sequence.

ACK resource pool information: indicating 1 set of resources for feeding back ACK feedback information within a superframe consisting of 48 radio frames. And each superframe comprises the resource for feeding back the ACK feedback information indicated by the information.

ACK resource pool set information: and indicating a plurality of groups of resource pools for feeding back the ACK feedback information in a super frame consisting of 48 radio frames. The set of ACK resource pools indicated by the information is included in each superframe. And configuring a maximum of 32 resource pools for feeding back the ACK feedback information in each superframe.

Terminal node specific ACK resource pool information: indicating a particular ACK resource pool of the set of ACK resource pools.

Terminal node specific ACK comb information: and indicating the resource used by the ACK feedback information in the ACK resource pool. 0000 represents comb teeth of 1, 0001 represents comb teeth of 2 and uses even subcarriers, 0010 represents comb teeth of 2 and uses odd subcarriers, 0011 represents comb teeth of 2 and uses all subcarriers, 0100 represents comb teeth of 4 and uses modulo 4 subcarriers of 0, 0101 represents comb teeth of 4 and uses modulo 4 subcarriers of 1, 0110 represents comb teeth of 4 and uses modulo 4 subcarriers of 2, 0111 represents comb teeth of 4 and uses modulo 4 subcarriers of 3, 1000 represents comb teeth of 4 and uses modulo 4 subcarriers of 0 and modulo 4 of 1, 1001 represents comb teeth of 4 and uses modulo 4 subcarriers of 2 and modulo 4 of 3, 1010 represents comb teeth of 4 and uses modulo 4 of 0, modulo 4 is a 1 and modulo 4 is a 2 sub-carrier, 1011 represents a comb of 4 and uses all sub-carriers, and 1100 represents the determination of comb information according to the dynamic scheduling information indication.

Terminal node specific control information resource pool information: indicating 1 set of resources used for blind detection of control information within a superframe consisting of 48 radio frames, and an ACK resource pool paired with the control information resource pool. And each superframe comprises a terminal node specific control information resource pool indicated by the information and an ACK resource pool matched with the control information resource pool. And when the terminal node is not configured with the specific control information resource pool, the terminal node detects the control information by using the communication domain common control information resource pool and feeds back ACK feedback information by using the first ACK resource pool in the ACK resource pool set.

Terminal node specific control information resource pool set information: multiple sets of control information resources within a superframe of 48 radio frames are indicated, wherein each set of control information resources is subject to independent control information blind detection. Each superframe contains a set of terminal node specific control information resource pools indicated by the information.

Scheduling data control information: the management node configures the maximum number of CBGs contained in 1 TB to be N through high-level signaling. In one transmission, a TB includes CB C, and the number of CBGs actually included in the TB is M ═ min (C, N). M1 mod (C, N), K1 ceil (C, N), K2 floor (C, N), if M1>0, among the M CBGs, CBGs #0 to # (M1-1) contain K1 CBs. CBGs # M1 to # (M1-1) contain K2 CBs.

When the scheduled terminal node supports the retransmission based on the transport block TB and the retransmission based on the coding block group, the scheduling data control information includes 69 bits, and the specific contents of the 69 bits are as follows.

1 bit: an indication field for indicating the link type indication information. If the value of the bit is 0, indicating the link transmission of the management node; if the value of the bit is 1, the terminal link transmission is indicated.

1 bit: an indication field for indicating a cross-superframe scheduling indication. If the value of the bit is 0, indicating that the control information and the resource scheduled by the control information are positioned in the same superframe; if the value of the bit is 1, the resource scheduled by the control information is indicated to be located in the superframe adjacent to the superframe where the control information is located.

3 bits: and the indication domain is used for indicating the DMRS port number indication information. The DMRS port number is the value of the 3 bits plus 1.

1 bit: and an indication field for indicating DMRS comb indication. If the bit value is 0, indicating not to adopt comb teeth; if the bit value is 1, it indicates that comb teeth with an interval of 1 are used.

10 bits: and an indication field for indicating the first granularity subcarrier group indication information. The 10 bits starting from the most significant bit to the least significant bit end correspond one-to-one to the order of the 10 first-granularity subcarrier groups. In 10 bits, a bit with a value of 1 represents that a subcarrier group corresponding to the bit is used, and a bit with a value of 0 represents that a subcarrier group corresponding to the bit is not used.

3 bits: and an indication field for indicating the starting radio frame indication information. In the scheduled superframe, the starting radio frame is # radio frame (the 3-bit value x 6).

3 bits: and the indication field is used for indicating the indication of the length of the radio frame. Starting from the starting radio frame, this lasts (the value of 3 bits +1) × 6 radio frames.

2 bits: and an indication field for indicating the HARQ process indication information.

5 bits: and the indication field is used for indicating the modulation coding mode indication information.

2 bits: and an indication field for indicating the scheduling type indication information. If the 2-bit value is 00, indicating initial transmission based on TB; if the 2-bit value is 01, a retransmission based on the TB is indicated; if the 2-bit value is 10, indicating a CBG-based retransmission; if the 2-bit value is 11, CBG-based initial retransmission hybrid transmission is indicated.

1 bit: an indication field for indicating redundancy version indication information. When the scheduling type indication information indicates TB-based initial transmission, the value of the 1 bit is 0; when the scheduling type indication information indicates a TB-based retransmission, the value of the 1 bit is 1; when the scheduling type indication information indicates CBG-based retransmission, the value of the 1 bit is 0; when the retransmission type indication information indicates that the CBG-based initial retransmission is retransmitted for the hybrid transmission, the value of the 1 bit is 1. If the value of the 1 bit is 0, indicating redundancy version 0; if the value of the 1 bit is 1, redundancy version 1 is indicated.

X bits: and the indication field is used for indicating the data type indication information and indicates the data type of the corresponding position CBG in the form of a bitmap. X is configured by higher layer signaling, and represents the maximum number of CBGs that a TB block can contain, and X may be 2, 4, or 8. When the scheduling type indication information indicates primary transmission or retransmission based on the TB, the numerical values of the X bits are all 0; when the scheduling type indication information indicates the retransmission based on the CBG, a bit with a median value of 0 in the X bits represents that the CBG corresponding to the bit is not transmitted, and a bit with a median value of 1 represents that the CBG corresponding to the bit is retransmission data; when the scheduling type indication information indicates initial retransmission hybrid transmission based on the CBG, a bit with a median value of 0 in X bits represents that the CBG corresponding to the bit is initial transmission data, wherein the number and the size of CBs included in the CBG are the same as those of CBs included in a CBG successfully transmitted at a corresponding position during the last initial transmission of the TB, all the initial transmission data form a new transmission block, and a bit with a median value of 1 in X bits represents that the CBG corresponding to the bit is retransmission data, wherein the number and the size of CBs included in the CBG are the same as those of CBs included in a corresponding CBG during the last initial transmission of the TB.

4 bits: and an indication field for indicating the comb type parameter and the starting comb subcarrier group information of the ACK feedback. If the 4-bit value is 0000, the comb teeth are represented as 1; if the 4-bit value is 0001, the comb is represented as 2 and even number of subcarriers are used; the 4-bit value is 0010, which represents that the comb is 2 and odd number of subcarriers are used; the 4-bit value is 0011, which means that the comb is 2 and all subcarriers are used; the 4 bits have a value of 0100, which represents a comb of 4 and uses a subcarrier modulo 4 by 0; the 4 bits have a value of 0101, which represents a comb of 4 and uses a subcarrier modulo 4 by 1; the 4-bit value is 0110, which represents a comb of 4 and uses a modulo-4 2 subcarrier; if the 4-bit value is 0111, it represents a comb of 4 and a subcarrier modulo 4 by 3 is used; if the 4 bits have a value of 1000, it represents that the comb is 4 and a subcarrier with modulo 40 and modulo 41 is used; if the 4-bit value is 1001, it represents that the comb is 4 and the subcarriers modulo 4 by 2 and modulo 4 by 3 are used; if the 4-bit value is 1010, it represents that the comb is 4 and the subcarriers modulo-4 are 0, modulo-4 is 1, and modulo-4 is 2 are used; if the 4-bit value is 1011, the comb is represented by 4 and all subcarriers are used. Other cases are reserved.

Y bit: padding bits, and the values of the Y bits are all 0. Wherein X + Y is 10.

24 bits: generating polynomial g using cyclic redundancy check_CRC24B(D) And calculating a cyclic redundancy check sequence and adding a terminal node physical layer identification mask.

When the scheduled terminal node supports only TB-based retransmission, the scheduling data control information includes 59 bits, and the specific contents of the 59 bits are as follows.

1 bit: and an indication field for indicating the retransmission indication information. If the value of the 1 bit is 0, representing the initial transmission data; if the value of the 1 bit is 1, it represents retransmission data.

1 bit: and an indication field for indicating the retransmission version indication information. If the value of the 1 bit is 0, indicating retransmission version 0; if the value of the 1 bit is 1, retransmission version 1 is indicated.

24 bits: generating polynomial g using cyclic redundancy check_CRC24B(D) And calculating a cyclic redundancy check sequence, and adding a terminal node physical layer identification mask or adding a system message physical layer identification mask.

Referring to fig. 2, fig. 2 is a schematic flow chart of an information transmission method according to an embodiment of the present application, where the method includes the following steps.

Step 201: if first feedback information corresponding to first data information sent by a management node in a first COT falls outside the first COT, a terminal node transmits the first feedback information in a second COT, wherein the second COT is a COT after the first COT.

The information transmission method is applied to a vehicle-mounted wireless short-distance communication system working on an unlicensed frequency spectrum.

The first data information is second data information.

The vehicle-mounted wireless short-distance communication system supports a semi-static scheduling mode to transmit data, and the modulation and coding modes are the same during data transmission each time. The semi-static scheduling mode of the vehicle-mounted wireless short-distance communication system transmits data to support transmission of one TB in one wireless frame, and each wireless frame adopts the same resource configuration information. The semi-persistent scheduling mode of the vehicle-mounted wireless short-distance communication system also supports the transmission of one TB in a plurality of continuous wireless frames, wherein the same resource configuration information is used in each wireless frame. The vehicle-mounted wireless short-distance communication system supports dynamic scheduling transmission, and dynamically scheduled data supports multi-wireless-frame transmission. In multi-radio frame transmission, transmission resources in multiple radio frames transmit one data channel. The plurality of radio frame information is indicated by control signaling.

The second type of data information transmission supports semi-static scheduling transmission and dynamic scheduling transmission. And when the second type data information transmission adopts semi-static scheduling transmission, the scheduling information is sent through high-level signaling. At this time, one TB for transmitting the second type data information is transmitted in a plurality of consecutive radio frames, each radio frame adopts the same resource allocation information, and the modulation and coding modes are the same during each data transmission. When the second type data information transmission adopts dynamic scheduling transmission, the scheduling information is sent through a physical layer control signaling. At this time, one TB for the second type data information transmission is transmitted in a plurality of radio frames, and the resource configuration adopted by each radio frame is the same. The second type of data information transmission is encoded using polar codes.

Wherein the feedback information is ACK feedback information.

The second COT may be a COT next to the first COT or another COT after the first COT, which is not limited herein.

In one implementation, the method further comprises:

the management node sends first scheduling data control information in the first COT, wherein the first scheduling data control information is used for indicating that the first feedback information is not transmitted on a feedback information resource corresponding to the first data information;

the terminal node receives the first scheduling data control information.

After receiving the first scheduling data control information, the terminal node determines not to transmit the first feedback information on a feedback information resource corresponding to the first data information.

Wherein the management node transmits the first scheduling data control information when the first feedback information falls outside the first COT.

Optionally, the first scheduling data control information includes a first indication field, where the first indication field is used to indicate that the first feedback information is not transmitted on the feedback information resource corresponding to the first data information, and the first indication field is an indication field used to indicate a comb type parameter and starting comb subcarrier group information for ACK feedback.

And if the value of the 4 bits is 1111, indicating not to transmit the first feedback information on the feedback information resource corresponding to the first data information.

In one implementation, the method further comprises:

and the terminal node determines that the first feedback information falls outside the first COT according to the COT information.

The COT information includes a time domain length of the COT, for example, N milliseconds, where N is a natural number. The management node indicates the COT information through the scheduling data control information, namely the COT information is one or more fields in the scheduling data control information. After the terminal node obtains the COT information, determining the starting point of the COT as a symbol, a wireless frame or a superframe where scheduling data control information containing the COT information is received; and the time domain length of the COT is indicated by the COT information, and the terminal node uniquely determines the time domain position of the COT according to the starting point of the COT and the time domain length of the COT. And the terminal node compares the time domain position of the COT with the time domain position of the first feedback information to judge whether the first feedback information falls outside the first COT.

Wherein, when the first feedback information falls outside the first COT, the terminal node determines not to transmit the first feedback information on a feedback information resource corresponding to the first data information.

In one implementation, the method further comprises:

the management node sends second scheduling data control information in the second COT, wherein the scheduling data control information is used for indicating that the first feedback information is transmitted in the second COT;

and the terminal node receives the second scheduling data control information sent by the management node.

Wherein the second scheduling data control information includes at least one of the following 15 indication fields.

1 bit: and an indication field for indicating the link type indication information, wherein the value of the 1 bit is consistent with the value of the 1 bit occupied by the indication field for indicating the link type indication information in the first scheduling data control information.

1 bit: and the value of the 1 bit is consistent with the value of the 1 bit occupied by the indication field used for indicating the cross-superframe scheduling indication in the first scheduling data control information.

3 bits: and the 3-bit numerical value is consistent with the 3-bit numerical value occupied by the indication field used for indicating the DMRS port quantity indication information in the first scheduling data control information, or the 3-bit numerical value is 0.

1 bit: and the value of the 1 bit is consistent with the value of the 1 bit occupied by the indication field for indicating the DMRS comb indication in the first scheduling data control information, or the value of the 1 bit is 0.

10 bits: an indication field for indicating indication information of the first granularity subcarrier group, wherein the 10-bit values are all 0;

3 bits: and an indication field for indicating the indication information of the starting radio frame, wherein the values of the 3 bits are all 0.

3 bits: and an indication field for indicating the indication of the length of the radio frame, wherein the values of the 3 bits are all 0.

2 bits: and the 2-bit numerical value is consistent with the 2-bit numerical value occupied by the indication field used for indicating the HARQ process indication information in the first scheduling data control information.

5 bits: and the 5-bit value is consistent with the 5-bit value occupied by the indication field used for indicating the modulation and coding mode indication information in the first scheduling data control information.

2 bits: and an indication field for indicating the scheduling type indication information, wherein the 2-bit value is consistent with the 2-bit value occupied by the indication field for indicating the scheduling type indication information in the first scheduling data control information, or the 2-bit value is 0.

1 bit: and an indication field for indicating redundancy version indication information, wherein the value of 1 bit is consistent with the value of 1 bit occupied by the indication field for indicating redundancy version indication information in the first scheduling data control information, or the value of 1 bit is 0.

X bits: and the indicating field is used for indicating the data type indicating information, the data type of the corresponding position CBG is indicated in the form of a bit bitmap, and the value of the X bit is consistent with the value of the X bit occupied by the indicating field used for indicating the data type indicating information in the first scheduling data control information, or the values of the X bit are all 0.

Optionally, the second scheduling data control information includes a second indication field, where the second indication field is used to indicate that the first feedback information is transmitted within the second COT, and the second indication field is an indication field used to indicate a comb type parameter and starting comb subcarrier group information for ACK feedback.

And the second indication field occupies 4 bits, and if the value of the 4 bits is 0000-1011, the second scheduling data control information is used for indicating feedback information which is not transmitted in the COT before the terminal node transmits.

In one embodiment, the second scheduling data control information is not used for scheduling data information, the second scheduling data control information further includes N third indication fields, the N third indication fields jointly indicate that the second scheduling data control information is not used for scheduling data information, and N is a positive integer.

Optionally, the N third indication fields include at least one of: an indication field for indicating frequency domain information, an indication field for indicating time domain information, and an indication field for indicating HARQ process information;

the indication field for indicating the frequency domain information and the indication field for indicating the time domain information both set a value of 0, and the indication field for indicating the HARQ process information is consistent with the setting of the indication field for indicating the HARQ process information included in the first scheduling data control information.

Optionally, the second scheduling data control information is not used for scheduling data information, and the terminal node transmits the first feedback information in a second COT, including:

and in the next superframe of the superframe where the second scheduling data control information is located, the terminal node transmits the first feedback information on the feedback resource corresponding to the second scheduling information.

In a next superframe of the superframe where the second scheduling data control information is located, the management node receives the first feedback information transmitted by the terminal node on the feedback resource corresponding to the second scheduling information.

and in the superframe where the second scheduling data control information is located, the terminal node transmits the first feedback information on the feedback resource corresponding to the second scheduling information.

And in the superframe where the second scheduling data control information is located, the management node receives the first feedback information transmitted by the terminal node on the feedback resource corresponding to the second scheduling information.

It should be noted that, since the second scheduling data control information is not used for scheduling data information, the terminal node only needs to transmit feedback information that is not transmitted in the previous COT.

In another embodiment, the second scheduling data control information is used for scheduling data information.

Optionally, the second scheduling data control information further includes M fourth indication fields, and the M fourth indication fields jointly indicate that the second scheduling data control information is used for scheduling data information.

Wherein the M fourth indication fields comprise at least one of: an indication field for indicating frequency domain information and an indication field for indicating time domain information;

the value of the occupied bit of the indication field for indicating the frequency domain information and the value of the occupied bit of the indication field for indicating the time domain information are both set to be non-0 values.

Optionally, the second scheduling data control information further indicates a resource location of a feedback resource for transmitting feedback information.

The resource position is determined by a time domain position and a frequency domain position, and the time domain position is the next superframe of the superframe where the scheduling data control information is received; the frequency domain position is indicated by an indication field of comb type parameter and starting comb subcarrier group information in the second scheduling data control information for indicating ACK feedback.

Optionally, the terminal node transmits the first feedback information in a second COT, including:

and in a next superframe of the superframe where the second scheduling data control information is located, the terminal node transmits second feedback information corresponding to second data information currently scheduled by the first feedback information and the second scheduling data control information at the resource position, wherein the first data information and the second data information are of the same type.

And in a next superframe of the superframe where the second scheduling data control information is located, the management node receives the first feedback information and the second feedback information transmitted by the terminal node on the resource position.

Optionally, before the first feedback information and the second feedback information are transmitted, and operations are performed on corresponding bits in the first feedback information and the second feedback information.

It should be noted that, since the second scheduling data control information is used for scheduling data information, the terminal node needs to transmit feedback information that is not transmitted in the COT before transmission and transmit feedback information corresponding to currently scheduled data information.

Fig. 3 shows an information transmission apparatus 300 provided in this embodiment of the present application, where the apparatus 300 may be a terminal node, and may also be a chip in the terminal node. The apparatus 300 comprises: a transmission unit 310, wherein:

a transmitting unit 310, configured to transmit first feedback information in a second COT if first feedback information corresponding to first data information sent by a management node in a first COT falls outside the first COT, where the second COT is a COT after the first COT.

In an implementation manner, the transmitting unit 310 is further configured to receive first scheduling data control information sent by the management node in the first COT, where the first scheduling data control information is used to indicate that the first feedback information is not transmitted on a feedback information resource corresponding to the first data information.

In one implementation, the apparatus 300 further includes:

a determining unit 320, configured to determine that the first feedback information falls outside the first COT according to COT information.

In an implementation manner, the transmitting unit 310 is further configured to receive second scheduling data control information sent by the management node in the second COT, where the scheduling data control information is used to instruct to transmit the first feedback information in the second COT.

In an embodiment, the second scheduling data control information is not used for scheduling data information, the second scheduling data control information further includes N third indication fields, the N third indication fields jointly indicate that the second scheduling data control information is not used for scheduling data information, and N is a positive integer.

Optionally, in terms of transmitting the first feedback information in the second COT, the transmitting unit 310 is specifically configured to: and transmitting the first feedback information on the feedback resource corresponding to the second scheduling information in a next superframe of the superframe in which the second scheduling data control information is located.

Optionally, in terms of transmitting the first feedback information in the second COT, the transmitting unit 310 is specifically configured to: and transmitting the first feedback information on the feedback resource corresponding to the second scheduling information in the superframe in which the second scheduling data control information is located.

Optionally, in terms of transmitting the first feedback information in the second COT, the transmitting unit 310 is specifically configured to:

and transmitting second feedback information corresponding to second data information currently scheduled by the first feedback information and the second scheduling data control information at the resource position in a next superframe of the superframe in which the second scheduling data control information is located, wherein the first data information and the second data information are of the same type.

Optionally, and operation is performed on corresponding bits in the first feedback information and the second feedback information.

In an implementation manner, the first data information is second-class data information.

Fig. 4 shows an information transmission apparatus 400 provided in an embodiment of the present application, where the apparatus 400 may be a management node, and may also be a chip in the management node. The apparatus 400 comprises: a transmission unit 410, wherein:

In an implementation, the second scheduling data control information includes a second indication field, where the second indication field is used to indicate that the first feedback information is transmitted within the second COT, and the second indication field is an indication field used to indicate a comb type parameter and starting comb subcarrier group information for ACK feedback.

In an implementation manner, the second scheduling data control information is not used for scheduling data information, the second scheduling data control information further includes N third indication fields, the N third indication fields jointly indicate that the second scheduling data control information is not used for scheduling data information, and N is a positive integer.

In one implementation, the N third indication fields include at least one of: an indication field for indicating frequency domain information, an indication field for indicating time domain information, and an indication field for indicating HARQ process information;

In one implementation, the second scheduling data control information is used for scheduling data information.

In an implementation, the second scheduling data control information further indicates a resource location of a feedback resource for transmitting feedback information.

In an implementation manner, the transmitting unit 410 is further configured to send first scheduling data control information in the first COT, where the first scheduling data control information is used to indicate that the first feedback information is not transmitted on a feedback information resource corresponding to the first data information.

In an implementation manner, the first scheduling data control information includes a first indication field, where the first indication field is used to indicate that the first feedback information is not transmitted on a feedback information resource corresponding to the first data information, and the first indication field is an indication field used to indicate a comb type parameter and starting comb subcarrier group information for ACK feedback of an acknowledgement character.

It should be understood that the apparatus 300 and the apparatus 400 herein are embodied in the form of functional units. The term "unit" herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an optional example, it may be understood by those skilled in the art that the apparatus 300 may be specifically a terminal node in the foregoing embodiment, the apparatus 400 may be specifically a network device in the foregoing embodiment, the apparatus 300 may be configured to execute each process and/or step corresponding to the terminal node in the foregoing method embodiment, and the apparatus 400 may be configured to execute each process and/or step corresponding to a management node in the foregoing method embodiment, which is not described herein again to avoid repetition.

The device 300 of each of the above-mentioned schemes has the function of implementing the corresponding steps executed by the terminal node in the above-mentioned method, and the device 400 of each of the above-mentioned schemes has the function of implementing the corresponding steps executed by the management node in the above-mentioned method; the functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software comprises one or more modules corresponding to the functions; for example, the transmitting unit may be replaced by a transmitter, the receiving unit may be replaced by a receiver, other units, such as the determining unit, may be replaced by a processor, and the transceiving operation and the related processing operation in the respective method embodiments are respectively performed.

In an embodiment of the present application, the apparatus 300 in fig. 3 or the apparatus 400 in fig. 4 may also be a chip or a chip system, such as: system on chip (SoC). Correspondingly, the receiving unit and the transmitting unit may be a transceiver circuit of the chip, and are not limited herein.

Fig. 5 illustrates a communication device 500 according to an embodiment of the present application, where the communication device 500 includes a processor 510, a memory 520, a transceiver 530, and one or more programs, where the one or more programs are stored in the memory 520 and configured to be executed by the processor 510.

In one implementation, the communication device is a terminal node, and the program includes instructions for performing the steps of:

if first feedback information corresponding to first data information sent by a management node in a first channel occupied time window COT falls outside the first COT, transmitting the first feedback information in a second COT, wherein the second COT is a COT after the first COT.

Optionally, the program includes instructions for further performing the steps of: receiving first scheduling data control information sent by the management node in the first COT, where the first scheduling data control information is used to indicate that the first feedback information is not transmitted on a feedback information resource corresponding to the first data information.

The first scheduling data control information includes a first indication field, where the first indication field is used to indicate that the first feedback information is not transmitted on the feedback information resource corresponding to the first data information, and the first indication field is an indication field used to indicate a comb type parameter and starting comb subcarrier group information for ACK feedback.

Optionally, the program includes instructions for further performing the steps of: determining that the first feedback information falls outside the first COT according to COT information.

Optionally, the program includes instructions for further performing the steps of: receiving second scheduling data control information sent by the management node in the second COT, where the scheduling data control information is used to indicate that the first feedback information is transmitted in the second COT.

The second scheduling data control information includes a second indication field, where the second indication field is used to indicate that the first feedback information is transmitted within the second COT, and the second indication field is an indication field used to indicate comb type parameters and starting comb subcarrier group information for ACK feedback.

Wherein, in transmitting the first feedback information within the second COT, the program comprises instructions specifically for performing the steps of: and transmitting the first feedback information on the feedback resource corresponding to the second scheduling information in a next superframe of the superframe in which the second scheduling data control information is located.

Wherein, in transmitting the first feedback information within the second COT, the program comprises instructions specifically for performing the steps of: and transmitting the first feedback information on the feedback resource corresponding to the second scheduling information in the superframe in which the second scheduling data control information is located.

Wherein the N third indication fields comprise at least one of: an indication field for indicating frequency domain information, an indication field for indicating time domain information, and an indication field for indicating HARQ process information;

Wherein the second scheduling data control information further indicates a resource location of a feedback resource for transmitting feedback information.

Wherein, in transmitting the first feedback information within the second COT, the program comprises instructions specifically for performing the steps of: and transmitting second feedback information corresponding to second data information currently scheduled by the first feedback information and the second scheduling data control information at the resource position in a next superframe of the superframe in which the second scheduling data control information is located, wherein the first data information and the second data information are of the same type.

Optionally, the first data information is second type data information.

In another possible implementation, the communication device is a management node, and the program includes instructions for performing the following steps:

if first feedback information corresponding to first data information sent by a management node in a first channel occupied time window COT falls outside the first COT, sending second scheduling data control information in a second COT, wherein the scheduling data control information is used for indicating that the first feedback information is transmitted in the second COT, and the second COT is a COT after the first COT.

Optionally, the second scheduling data control information is not used for scheduling data information, the second scheduling data control information further includes N third indication fields, the N third indication fields jointly indicate that the second scheduling data control information is not used for scheduling data information, and N is a positive integer.

Optionally, the second scheduling data control information is used for scheduling data information.

Optionally, the program includes instructions for further performing the steps of: and sending first scheduling data control information in the first COT, wherein the first scheduling data control information is used for indicating that the first feedback information is not transmitted on a feedback information resource corresponding to the first data information.

Optionally, the first scheduling data control information includes a first indication field, where the first indication field is used to indicate that the first feedback information is not transmitted on the feedback information resource corresponding to the first data information, and the first indication field is an indication field used to indicate a comb type parameter and starting comb subcarrier group information for ACK feedback of an acknowledgement character.

Optionally, the first data information is second type data information.

It will be appreciated that the memory 520 may include both read-only memory and random access memory, and provides instructions and data to the processor. The portion of memory may also include non-volatile random access memory. For example, the memory may also store device type information.

It should be understood that, in the embodiment of the present application, the processor 510 of the above apparatus may be a Central Processing Unit (CPU), and the processor 510 may also be other general processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software elements in a processor. The software elements may be located in ram, flash, rom, prom, or eprom, registers, among other storage media that are well known in the art. The storage medium is located in a memory, and a processor executes instructions in the memory, in combination with hardware thereof, to perform the steps of the above-described method. To avoid repetition, it is not described in detail here.

The present application also provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform some or all of the steps described in the above method embodiments as an end node or a management node.

Embodiments of the present application also provide a computer program product, where the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform some or all of the steps described in the above method for an end node or a management node. The computer program product may be a software installation package.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Those of ordinary skill in the art will appreciate that the various method steps and elements described in connection with the embodiments disclosed herein can be implemented as electronic hardware, computer software, or combinations of both, and that the steps and elements of the various embodiments have been described above generally in terms of their functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present application.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially or partially contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An information transmission method, characterized in that the method comprises:

if first feedback information corresponding to first data information sent by a management node in a first channel occupied time window COT falls outside the first COT, a terminal node transmits the first feedback information in a second COT, wherein the second COT is a COT after the first COT.

2. The method of claim 1, further comprising:

and the terminal node receives first scheduling data control information sent by the management node in the first COT, wherein the first scheduling data control information is used for indicating that the first feedback information is not transmitted on a feedback information resource corresponding to the first data information.

3. The method of claim 2, wherein the first scheduling data control information comprises a first indication field for indicating that the first feedback information is not transmitted on the feedback information resource corresponding to the first data information, and wherein the first indication field is an indication field for indicating comb type parameters and starting comb subcarrier group information for acknowledgement character ACK feedback.

4. The method of claim 1, further comprising:

5. The method according to any one of claims 1-4, further comprising:

and the terminal node receives second scheduling data control information sent by the management node in the second COT, wherein the scheduling data control information is used for indicating that the first feedback information is transmitted in the second COT.

6. The method of claim 5, wherein the second scheduling data control information comprises a second indication field indicating transmission of the first feedback information within the second COT, and wherein the second indication field is an indication field indicating comb type parameters and starting comb subcarrier group information for ACK feedback.

7. The method according to claim 5 or 6, wherein the second scheduling data control information is not used for scheduling data information, and the second scheduling data control information further comprises N third indication fields, and the N third indication fields jointly indicate that the second scheduling data control information is not used for scheduling data information, and N is a positive integer.

8. The method according to any of claims 5-7, wherein the terminal node transmitting the first feedback information within a second COT comprises:

and in a next superframe of the superframe where the second scheduling data control information is located, the terminal node transmits the first feedback information on the feedback resource corresponding to the second scheduling data control information.

9. The method of claim 7, wherein the terminal node transmits the first feedback information within a second COT, comprising:

10. The method according to any of claims 7-9, wherein the N third indication fields comprise at least one of: the device comprises an indication field used for indicating frequency domain information, an indication field used for indicating time domain information and an indication field used for indicating hybrid automatic repeat request (HARQ) process information;

11. The method according to claim 5 or 6, wherein the second scheduling data control information is used for scheduling data information.

12. The method of claim 11, wherein the second scheduling data control information further indicates a resource location of a feedback resource for transmitting feedback information.

13. The method of claim 12, wherein the terminal node transmits the first feedback information within a second COT, comprising:

14. The method according to any of claims 1-13, wherein the first data information is a second type of data information.

15. An information transmission method, characterized in that the method comprises:

if first feedback information corresponding to first data information sent by a management node in a first channel occupied time window COT falls outside the first COT, the management node sends second scheduling data control information in a second COT, wherein the scheduling data control information is used for indicating that the first feedback information is transmitted in the second COT, and the second COT is a COT after the first COT.

16. The method of claim 15, wherein the second scheduling data control information comprises a second indication field indicating transmission of the first feedback information within the second COT, and wherein the second indication field is an indication field indicating a comb type parameter and starting comb subcarrier group information for ACK feedback.

17. The method according to claim 15 or 16, wherein the second scheduling data control information is not used for scheduling data information, the second scheduling data control information further comprising N third indication fields, the N third indication fields jointly indicating that the second scheduling data control information is not used for scheduling data information, and N is a positive integer.

18. The method of claim 17, wherein the N third indication fields comprise at least one of: the device comprises an indication field used for indicating frequency domain information, an indication field used for indicating time domain information and an indication field used for indicating hybrid automatic repeat request (HARQ) process information;

19. The method according to claim 15 or 16, wherein the second scheduling data control information is used for scheduling data information.

20. The method of claim 19, wherein the second scheduling data control information further indicates a resource location of a feedback resource for transmitting feedback information.

21. The method according to any one of claims 15-20, further comprising:

and the management node sends first scheduling data control information in the first COT, wherein the first scheduling data control information is used for indicating that the first feedback information is not transmitted on a feedback information resource corresponding to the first data information.

22. The method of claim 21, wherein the first scheduling data control information comprises a first indication field for indicating that the first feedback information is not transmitted on the feedback information resource corresponding to the first data information, and wherein the first indication field is an indication field for indicating comb type parameter and starting comb subcarrier group information for acknowledgement character ACK feedback.

23. The method according to any of claims 15-22, wherein the first data information is a second type of data information.

24. An information transmission apparatus, applied to a terminal node, the apparatus further comprising:

a transmission unit, configured to transmit first feedback information in a second COT if first feedback information corresponding to first data information sent by a management node within a first channel occupied time window COT falls outside the first COT, where the second COT is a COT subsequent to the first COT.

25. An information transmission apparatus, applied to a management node, the apparatus further comprising:

a transmitting unit, configured to send second scheduling data control information in the second COT if first feedback information corresponding to first data information sent by a management node in a first channel occupied time window COT falls outside the first COT, where the scheduling data control information is used to indicate that the first feedback information is transmitted in the second COT, and the second COT is a COT after the first COT.

26. A communication device comprising a processor, a memory, a transceiver, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the method of any of claims 1-14 or the programs comprising instructions for performing the steps in the method of any of claims 15-23.

27. A computer-readable storage medium, characterized in that a computer program for electronic data exchange is stored, wherein the computer program causes a computer to perform the method according to any one of claims 1-14 or the computer program causes a computer to perform the method according to any one of claims 15-23.