CN108809533B

CN108809533B - Method and device for transmitting coding block group

Info

Publication number: CN108809533B
Application number: CN201710317280.2A
Authority: CN
Inventors: 官磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-05-04
Filing date: 2017-05-04
Publication date: 2021-01-29
Anticipated expiration: 2037-05-04
Also published as: CN108809533A; WO2018202029A1

Abstract

The application provides a method for sending a coding block group CBG, which comprises the following steps: the first device sends at least two CBGs to the second device; the first device detects first feedback information, wherein the first feedback information is used for feeding back the decoding state of a first CBG, and the first CBG belongs to the at least two CBGs; the first device sends first indication information and a retransmission CBG to the second device, wherein the retransmission CBG belongs to the at least two CBGs, and the first indication information is used for indicating the receiving state of the first feedback information. The method for sending the CBG can enable the equipment sending the CBG to successfully retransmit the CBG under the condition of missing detection or unsuccessfully decoding the feedback information, and improves the transmission efficiency of a communication system.

Description

Method and device for transmitting coding block group

Technical Field

The present application relates to the field of communications, and in particular, to a method and an apparatus for transmitting a coding block group, and a method and an apparatus for receiving a coding block group.

Background

In a wireless communication system, in order to reduce the complexity of coding and decoding, a Transport Block (TB) is divided into a plurality of Coding Blocks (CBs), one or more CBs form a Coding Block Group (CBG), and a receiving end receives a CBG sent by a sending end and then decodes the CBG, and feeds back a CBG decoding state to the sending end through feedback information, so that the sending end determines whether to retransmit the CBG according to the feedback information.

When the sender fails to decode the feedback information, for example, the sender receives the feedback information but fails to decode the feedback information, or the receiver sends the feedback information but the sender does not receive the feedback information, the CBG retransmission fails.

Disclosure of Invention

In view of the above, the present application provides a method and an apparatus for sending a CBG, and a method and an apparatus for receiving a CBG, which can solve the above problem of CBG retransmission failure.

In one aspect, a method for transmitting a CBG is provided, including: the first device sends at least two CBGs to the second device; the first device detects first feedback information, wherein the first feedback information is used for feeding back the decoding state of a first CBG, and the first CBG belongs to the at least two CBGs; the first device sends first indication information and a retransmission CBG to the second device, wherein the retransmission CBG belongs to the at least two CBGs, and the first indication information is used for indicating the receiving state of the first feedback information.

The method for sending the CBG can enable the equipment sending the CBG to successfully retransmit the CBG under the condition of missing detection or unsuccessfully decoding the feedback information, and improves the transmission efficiency of a communication system.

Optionally, the method further comprises: the first device determines the retransmission CBG according to reference feedback information, wherein the reference feedback information is first feedback information which is successfully decoded within a preset time period in the detected first feedback information.

Optionally, the reference feedback information specifically includes: and detecting first feedback information with a detection time unit closest to a retransmission time unit in the detected first feedback information, wherein the detection time unit is the time unit for the first device to detect the first feedback information, and the retransmission time unit is the time unit for the first device to send the retransmission CBG.

Thus, the CBGs that need to be retransmitted currently are determined, such as those CBGs whose decoding status is not successfully decoded in the reference feedback information are determined to be the currently retransmitted CBGs.

Optionally, the first indication information is specifically configured to indicate a receiving state of the first feedback information in which a detection time unit is closest to a retransmission time unit, where the detection time unit is a time unit for the first device to detect the first feedback information, and the retransmission time unit is a time unit for the first device to send the retransmission CBG.

Therefore, on the premise that the scheduling information is not missed, the device for receiving the CBG can directly determine the receiving state of the first feedback information sent at the last time according to the first indication information.

Optionally, the first indication information is specifically used to indicate the number of successfully decoded first feedback information in the detected first feedback information.

Even if the second device misses the scheduling information transmitted by the first device for the nth time, if the second device successfully decodes the scheduling information transmitted by the first device for the (n + 1) th time, the above embodiment can enable the second device to successfully receive the retransmission CBG transmitted by the first device for the (n + 1) th time.

Optionally, the first indication information is used to indicate at least two states, where the at least two states correspond to first feedback information in which at least two detection time units in the detected first feedback information are adjacent and successfully decoded, and the detection time unit is a time unit for the first device to detect the first feedback information.

Even if the second device misses the scheduling information sent by the first device for a certain time, the above embodiment enables the second device to successfully receive the retransmission CBG sent by the first device.

In another aspect, a method of receiving a CBG is provided, including: the second device receives at least two coding block groups CBG from the first device; the second device sends first feedback information to the first device, wherein the first feedback information is used for feeding back the decoding state of a first CBG, and the first CBG belongs to the at least two CBGs; the second device receives first indication information and a retransmission CBG from the first device, wherein the retransmission CBG belongs to the at least two CBGs, and the first indication information is used for indicating the receiving state of the first feedback information.

According to the method for receiving the CBG, the equipment for receiving the CBG can successfully receive the retransmitted CBG under the condition that the equipment for sending the CBG fails to detect or does not successfully decode the feedback information, and the transmission efficiency of a communication system is improved.

Optionally, the method further comprises: the second device determines reference feedback information according to the first indication information, wherein the reference feedback information is the first feedback information successfully decoded by the first device within a preset time period; and the second equipment determines the retransmission CBG according to the reference feedback information.

Optionally, the reference feedback information specifically includes: and sending the first feedback information with a time unit closest to a retransmission time unit, wherein the sending time unit is a time unit for the second device to send the first feedback information, and the retransmission time unit is a time unit for the second device to receive the retransmission CBG.

Therefore, after the second device determines the reference feedback information, it determines which CBGs the retransmission CBGs are currently received.

Optionally, the first indication information is specifically configured to indicate a receiving state of the first feedback information in which a sending time unit is closest to a retransmission time unit, where the sending time unit is a time unit for the second device to send the first feedback information, and the retransmission time unit is a time unit for the second device to receive the retransmission CBG.

Therefore, on the premise that the second device does not miss the scheduling information sent by the first device, the second device can directly determine the receiving state of the first feedback information sent last time according to the first indication information.

Optionally, the first indication information is specifically used to indicate the number of the first feedback information successfully decoded by the first device.

Optionally, the first indication information is used to indicate at least two states, where the at least two states correspond to at least two adjacent sending time units and the first feedback information successfully decoded by the first device, and the sending time unit is a time unit for the second device to send the first feedback information.

Thus, even if the second device misses the scheduling information sent by the first device at a certain time, the above embodiment enables the second device to successfully receive the retransmission CBG sent by the first device.

In another aspect, the present application provides an apparatus for sending a CBG, where the apparatus may implement the functions performed by the first device in the method according to the above aspects, and the functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one possible design, the apparatus includes a processor and a transceiver in the structure, and the processor is configured to support the apparatus to perform the corresponding functions of the method. The transceiver is for supporting communication between the apparatus and other network elements. The apparatus may also include a memory, coupled to the processor, that retains program instructions and data necessary for the apparatus.

In another aspect, the present application provides an apparatus for receiving a CBG, where the apparatus may implement the functions performed by the second device in the method according to the above aspects, and the functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In still another aspect, a network system is provided, where the network system includes the apparatus for sending CBG and the apparatus for receiving CBG described in the above aspects.

In yet another aspect, a computer program product is provided, the computer program product comprising: computer program code which, when run by a communication unit, a processing unit or a transceiver, a processor of a terminal device, causes the first device to perform the method in the above described implementation.

In yet another aspect, a computer program product is provided, the computer program product comprising: computer program code which, when run by a communication unit, a processing unit or a transceiver, a processor of a terminal device, causes a second device to perform the method in the above described implementation.

In yet another aspect, the present application provides a computer storage medium for storing computer software instructions for use with the first device, including a program designed to perform the above aspects.

In yet another aspect, the present application provides a computer storage medium for storing computer software instructions for the second device, which contains a program designed to perform the above aspects.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system to which the present application is applicable;

FIG. 2 is a schematic diagram of a method of partitioning CBGs provided herein;

FIG. 3 is a schematic flow chart diagram of a method of sending CBGs provided herein;

FIG. 4 is a schematic flow chart diagram of another method of sending CBGs provided herein;

FIG. 5 is a schematic flow chart diagram of a method of receiving CBGs provided herein;

FIG. 6 is a schematic diagram of a possible first device provided herein;

FIG. 7 is a schematic diagram of another possible first device configuration provided herein;

FIG. 8 is a schematic diagram of a possible second apparatus provided herein;

fig. 9 is a schematic structural diagram of another possible second device provided in the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

Fig. 1 illustrates a communication system 100 to which the present application is applicable. The communication system 100 includes an access network device 110 and a terminal device 120, the access network device 110 and the terminal device 120 communicate via a wireless network, and when the terminal device 120 transmits data, the wireless communication module may encode information for transmission, and in particular, the wireless communication module may obtain a number of data bits to be transmitted to the access network device 110 via a channel, such as data bits generated by a processing module, received from another device, or stored in a storage module. These data bits may be contained in one or more transport blocks (which may also be referred to as information blocks or data blocks), which may be segmented to produce multiple encoded blocks.

In this application, a terminal device may be referred to as an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user equipment. An access terminal may be a cellular telephone, a handheld device with wireless communication capabilities, 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 access network device may be a Base Transceiver Station (BTS) in a Code Division Multiple Access (CDMA) system, a base station (node B, NB) in a Wideband Code Division Multiple Access (WCDMA) system, an evolved node B (eNB) in a Long Term Evolution (LTE) system, or a base station (gNB) in a 5G communication system, where the base stations are merely examples, and the access network device may also be a relay station, an access point, a vehicle-mounted device, a wearable device, and other types of devices.

The above-described communication system to which the present application is applied is only an example, and the communication system to which the present application is applied is not limited thereto, and for example, the number of access network devices and terminal devices included in the communication system may be other numbers.

To facilitate an understanding of the present application, before describing the method for transmitting a CBG provided herein, a brief description will be made of concepts related to the present application.

In the present application, one TB may be divided into one or more CBGs, each of which includes at least one CB. For example, the number of CBGs into which a TB is divided may be determined according to the number of bits of the TB, may also be determined according to the number of time domain and/or frequency domain resources occupied by the TB, and may also be directly configured through high layer signaling.

The CBs in the TB may be mapped to the time-frequency resources according to a predetermined mapping rule, for example, the predetermined mapping rule is as follows: mapping sequentially according to the CB index and the sequence of a frequency domain first and a time domain second; or the predetermined mapping rule is: the frequency domain to be mapped is divided into a plurality of sub-frequency domains, and then mapping is performed in each sub-frequency domain.

Based on the mapping rule, the partition manner in which a TB is partitioned into CBGs may be based on the time-frequency resource to which the TB is mapped, such as a time dimension, a frequency dimension, or a time-frequency two-dimensional partition manner, in which a plurality of partitioned CBGs may or may not have the same CB, and whether the plurality of partitioned CBGs have the same CB depends on the final resource mapping result;

the CB in the TB may also be divided into a plurality of CBGs through other rules (for example, the division manner is independent of the time-frequency resource to which the TB is mapped and is dependent on the number of bits of the transport block) or signaling, and in this manner, the same CB generally does not exist in the plurality of divided CBGs.

The present application does not limit the TB division method, and two examples are given below, which should not be construed as limiting the TB division method of the present application.

TB partition type 1:

the first TB comprises 4 CBs, namely CB1, CB2, CB3 and CB4, and can be divided into 2 CBGs according to the above-mentioned other rules or the indication of higher layer signaling, namely CBG1 and CBG2, wherein CBG1 comprises CB1 and CB2, and CBG2 comprises CB3 and CB 4;

the first TB comprises 8 CBs, namely CB1, CB2, CB3, CB4, CB5, CB6, CB7 and CB8, and the first TB can be divided into 2 CBGs according to the above mapping rule or the indication of high layer signaling, namely CBG1 and CBG2, wherein CBG1 comprises CB1, CB2, CB3 and CB4, and CBG2 comprises CB5, CB6, CB7 and CB 8;

the first TB includes 8 CBs, which are CB1, CB2, CB3, CB4, CB5, CB6, CB7, and CB8, and may be divided into 4 CBGs according to the above mapping rule or the indication of higher layer signaling, that is, CBG1, CBG2, CBG3, and CBG4, where CBG1 includes CB1 and CB2, CBG2 includes CB3 and CB4, CBG3 includes CB5 and CB6, and CBG4 includes CB7 and CB 8.

TB partition type 2:

fig. 2 shows a schematic diagram of a TB division manner provided by the present application. As shown in fig. 2, the first TB is composed of 42 CBs, the first TB is mapped to 12 time domain symbols according to a sequence of a frequency domain and a time domain, and is divided into 12 CBGs according to a dimension of the time domain symbol, and because a frequency domain resource corresponding to a single time domain symbol is limited, some CBs cannot be mapped to the same time domain symbol completely, for example, CBG1 includes CB1 to CB4, CBG2 includes CB4 to CB7, and CB4 is a common CB of CBG1 and CBG 2.

When the TB transmitted in the communication system is divided into a plurality of CBGs, the receiving end can send feedback information to the sending end according to the decoding state of each CBG, when a small amount of CBGs fail to decode, the sending end only needs to retransmit the CBGs which fail to decode, the whole TB does not need to be retransmitted, and the resource utilization rate and the data transmission efficiency are improved.

Hereinafter, a method of transmitting a CBG provided by the present application will be described in detail.

Fig. 3 is a schematic flow chart of a method of sending CBGs provided herein. The method 300 includes:

s310, the first device sends at least two CBGs to the second device.

S320, the first device detects first feedback information, where the first feedback information is used to feed back a decoding status of a first CBG, and the first CBG belongs to the at least two CBGs.

S330, the first device sends first indication information and a retransmission CBG to the second device, where the retransmission CBG belongs to the at least two CBGs, and the first indication information is used to indicate a receiving status of the first feedback information.

In this application, the first device is any device that transmits a CBG, and the second device is any device that receives a CBG, for convenience of understanding, as an optional example, the following describes in detail the technical solution provided in this application with the first device being a base station and the second device being a UE.

In S310, the at least two CBGs may be any two different CBGs, for example, the at least two CBGs may be CBGs sent at the initial transmission time or CBGs sent at the retransmission time.

After the base station sends the at least two CBGs, it knows the format of the feedback information expected by itself and the time-frequency resources possibly occupied by the feedback information, and performs detection on the time-frequency resources possibly occupied by the feedback information, that is, detects the first feedback information.

In S320, there are two detection results of the first feedback information: detection success and detection failure. The detection success means that the base station detects first feedback information with the signal strength higher than the strength threshold, and the detection failure means that the signal strength of the first feedback information is lower than the strength threshold, or the UE does not send the first feedback information, so that the base station cannot receive the first feedback information.

When the first feedback information is successfully detected, the base station decodes the first feedback information, where successful decoding means that the base station acquires all effective information bits included in the first feedback information and successfully checks the effective information bits. The decoding failure means that the base station acquires all valid information bits included in the first feedback information but the first feedback information fails to check. It can be seen that successful decoding represents a successful detection; while a non-decoding success may indicate a detection failure or a detection success but a decoding failure.

In addition, in S320, the first feedback information may be used to feed back the decoding statuses of all CBGs of the at least two CBGs, and the first feedback information may also be used to feed back the decoding statuses of some CBGs of the at least two CBGs, and for a CBG of the at least two CBGs that is decoded correctly, the UE may feed back an Acknowledgement (ACK), and for a CBG of the at least two CBGs that is decoded incorrectly, the UE may feed back a Negative Acknowledgement (NACK).

Accordingly, the first CBG may be the at least two CBGs described in S310, the CBG in which the UE successfully decodes, or the CBG in which the UE fails to decode. When the UE only feeds back the CBG which is successfully decoded in the at least two CBGs, the base station defaults that the CBG which is not fed back by the UE is the CBG which is failed to be decoded; when the UE only feeds back the CBG with decoding failure in at least two CBGs, the base station defaults the CBG which is not fed back by the UE to be the CBG with decoding success.

The first feedback information may be feedback information for feeding back the decoding status of the CBG received by the UE in one time unit, or may be feedback information for feeding back the decoding status of the CBG received by the UE in a plurality of time units.

In the present application, the length of one time unit may be set arbitrarily, which is not limited in the present application.

For example, 1 time unit may include one or more subframes.

Alternatively, the 1 time unit may include one or more slots (slots) or minislots (mini-slots).

Alternatively, 1 time cell may include one or more time domain symbols.

Alternatively, the 1 time unit may include one or more Transmission Time Intervals (TTIs) or short transmission time intervals (sTTI).

Alternatively, the length of 1 time unit is 1 millisecond (ms).

Alternatively, the length of 1 time unit is less than 1 ms.

Fig. 4 shows a schematic flow chart of another method for sending CBGs provided by the present application.

The base station sends 4 CBGs in TTI i, as shown in fig. 4, which are respectively labeled as 1, 2, 3, and 4, where the 4 CBGs are CBGs of the initial transmission.

And the UE decodes after receiving the 4 CBGs and sends feedback information which feeds back the CBGs with the labels of 1 and 4 as decoding failure and the CBGs with the labels of 2 and 3 as decoding success.

The base station detects the feedback information sent by the UE on the predetermined time-frequency resources (including TTI m), detects and successfully decodes the feedback information, and sends the retransmission CBGs, i.e., CBGs labeled 1 and 4, to the UE in TTI j according to the feedback information.

And the UE decodes after receiving the CBGs marked as 1 and 4, and sends feedback information to the base station again, wherein the feedback information feeds back that the CBG marked as 1 fails to be decoded and the CBG marked as 4 succeeds in decoding.

The base station detects the feedback information re-sent by the UE on a predetermined time-frequency resource (including TTI n), and if the signal energy value of the feedback information is lower than the detection threshold of the base station, the base station does not detect the feedback information, or the base station fails to decode after detecting the feedback information, the base station sends a retransmission CBG, that is, CBGs marked as 1 and 4, in TTI k. Meanwhile, the base station sends first indication information to the UE in TTI k, and indicates that the receiving state of the feedback information sent by the UE is receiving failure. The UE may determine the CBGs received in TTI k as CBGs labeled 1 and 4 according to the first indication information and a preset rule.

In the method shown in fig. 4, the first feedback information may refer to feedback information detected by the base station in TTI m and TTI n, or may refer to only feedback information detected by the base station in TTI n, and it should be understood that in the present application, the first feedback information refers to feedback information expected to be acquired by the base station, and it is not limited that the base station can acquire the feedback information, nor that the UE will send the feedback information. In addition, the at least two CBGs may refer to CBGs transmitted by the base station in TTI i, or may refer to CBGs transmitted by the base station in TTI j.

In S330, the receiving status of the first feedback information includes two statuses, a receiving success and a receiving failure, where the receiving success refers to that the base station successfully detects the first feedback information and successfully decodes the first feedback information, and the receiving failure refers to that the first feedback information fails to be detected, or that the first feedback information succeeds to be detected but the first feedback information fails to be decoded.

And when the first feedback information is successfully received, the base station determines the CBG failed in decoding of the UE according to the first feedback information and retransmits the CBG failed in decoding of the UE. When the first feedback information fails to be received, the base station may send the retransmission CBG to the UE according to a preset rule.

Taking fig. 4 as an example, if the base station does not detect the first feedback information in TTI m, the base station may send CBGs marked as 1, 2, 3, and 4 to the UE, if the base station does not detect the first feedback information in TTI n, the base station may also send CBGs marked as 1, 2, 3, and 4 to the UE, the base station sends the retransmission CBG and sends the first indication information to the UE, and the UE determines that the first feedback information fails to be received according to the first indication information, and determines that the retransmission CBG is the CBG marked as 1, 2, 3, and 4 according to a preset rule.

For another example, if the base station does not detect the first feedback information sent by the UE in TTI n, the base station sends first indication information indicating that the first feedback information was unsuccessfully received to the UE, and retransmits the CBGs marked as 1 and 4 to the UE, and after receiving the first indication information, the UE determines that the base station retransmits according to the CBG retransmitted last time, that is, the UE determines that the retransmitted CBG received in TTI k is the CBGs marked as 1 and 4.

For another example, when the first indication information indicates that the receiving status of the first feedback information is successful, the UE determines that the received retransmission CBG is a CBG for which the UE currently fails to decode. As shown in fig. 4, if the base station successfully decodes the first feedback information detected by TTI m, the base station may send, to the UE, first indication information and CBGs marked as 1 and 4 in TTI j, where the first indication information indicates that the first feedback information is successfully decoded, and after receiving the first indication information, the UE determines that the CBG received by the UE between TTI j to TTI n is the CBG for which the current decoding fails, that is, the CBGs marked as 1 and 4.

The first indication information may be carried in scheduling information, where the scheduling information is used to schedule the UE to receive the retransmission CBG, the first indication information may also be carried in other information, and the first indication information may also be sent to the UE by the base station alone.

The above embodiments are merely examples, and the method for transmitting the CBG provided in the present application is not limited thereto.

For example, the retransmission CBG may be transmitted in a grant-based manner or in a non-scheduled manner, and the spectrum resource used for transmitting the retransmission CBG may be a licensed spectrum, a non-licensed spectrum, or other shared spectrum.

For another example, in an ultra reliable and ultra low latency (URLLC) scenario, the base station may not need to wait for the feedback of the UE to continuously transmit K CBGs, and the UE may combine and decode the K received CBGs and then send the first feedback information.

It should be understood that, in the present application, "when …", "if" and "if" all refer to the fact that the UE or the base station will perform the corresponding processing under certain objective conditions, and are not limited time, and do not require the UE or the base station to perform certain judgment actions, nor do they mean that there are other limitations.

In summary, the method for sending the CBG provided by the present application can enable the device sending the CBG to successfully retransmit the CBG in case of missing detection or unsuccessfully decoding the feedback information, thereby improving the transmission efficiency of the communication system.

Optionally, the method 300 further comprises:

s340, the first device determines the retransmission CBG according to reference feedback information, where the reference feedback information is first feedback information that is successfully decoded within a preset time period in the detected first feedback information.

Optionally, the reference feedback information specifically includes:

and detecting first feedback information with a detection time unit closest to a retransmission time unit in the detected first feedback information, wherein the detection time unit is the time unit for the first device to detect the first feedback information, and the retransmission time unit is the time unit for the first device to send the retransmission CBG.

The preset time period may be set arbitrarily, for example, the preset time period may be set as a time period from a time unit of sending the initial CBG to a time unit of currently sending the retransmission CBG, or the preset time period may be between two consecutive times of sending the scheduling information for the CBGs of the at least two CBGs by the base station, for example, for determining the retransmission CBG in the current TTI k, the preset time period corresponding to the first indication information is from TTI j to TTI k.

Taking fig. 4 as an example, if the base station successfully decodes the first feedback information detected in TTI m and TTI n, the base station may determine that the reference feedback information is the first feedback information sent by the UE in TTI n.

If the base station successfully decodes the first feedback information detected in TTI m and the base station does not detect the first feedback information in TTI n, the base station may determine that the reference feedback information is the first feedback information detected in TTI m, where TTI k is a retransmission time unit, the first feedback information detected in TTI m is the first feedback information successfully decoded in a preset time period, and the detection time unit is the first feedback information closest to the retransmission time unit.

After the base station determines the reference feedback information, the base station determines the CBGs that the UE has not successfully decoded according to the reference feedback information, thereby determining the CBGs that need to be retransmitted currently, for example, the CBGs corresponding to the decoding status NACK in the reference feedback information are determined to be the currently retransmitted CBGs.

Still taking fig. 4 as an example, the first feedback information detected by the base station in TTI n is the first feedback information detected by the base station in the TTI n, and the first indication information may only indicate the receiving state of the first feedback information detected in TTI n, for example, the first indication information may be 1 bit, and when the receiving state of the first feedback information detected in TTI n is successful, the first indication information is "1"; when the reception status of the first feedback information detected by TTI n is reception failure, the first indication information is "0".

Therefore, on the premise that the UE does not leak the scheduling information of the base station, the UE can directly determine the receiving state of the first feedback information sent at the last time according to the first indication information.

As shown in fig. 4, if the base station successfully detects the first feedback information in TTI m and successfully decodes the first feedback information, and does not detect the first feedback information in TTI n, the number indicated by the first indication information sent by the base station in TTI j is 1, the number indicated by the first indication information sent by the base station in TTI k is 1, and after receiving the first indication information sent by the base station in TTI k, the UE determines that the first feedback information successfully decoded by the base station is NAAN according to the number indicated by the first indication information received last time, so as to determine that the retransmission CBGs sent by the base station in TTI k are CBGs marked as 1 and 4.

Even if the UE misses the scheduling information sent by the base station for the nth time, if the UE successfully decodes the scheduling information sent by the base station for the (n + 1) th time, the above embodiment can enable the UE to successfully receive the retransmission CBG sent by the base station for the (n + 1) th time.

The first indication information may be set to indicate four states: "00", "01", "10", "11". The base station and the UE may agree on the meaning of the first indication information transmitted for the first time, for example, it may be agreed that when the first indication information transmitted for the first time indicates that the base station does not successfully receive the first feedback information, the first indication information is "00", when the first indication information transmitted for the first time indicates that the base station successfully receives the first feedback information, the first indication information is "11", and each subsequent time the first feedback information is successfully received, the state indicated by the first indication information changes once according to a preset rule, and if the subsequent first feedback information is not successfully received, the state of the first indication information does not change.

Returning to fig. 4, if the base station successfully detects the first feedback information in TTI m and then successfully decodes the first feedback information, the first indication information sent by the base station in TTI j may be "11"; if the base station does not detect the first feedback information in TTI n, the first indication information sent by the base station in TTI k can be '11', and the UE determines that the base station does not detect the first feedback information sent by the UE last time according to the fact that the state indicated by the first indication information does not change; if the base station successfully detects the first feedback information in TTI n and then successfully decodes the first feedback information, the first indication information sent by the base station in TTI k may be "00", and the UE determines that the base station successfully decodes the first feedback information that was last sent by the UE according to the change of the state indicated by the first indication information. It can be seen that, with each successful reception of the first feedback information by the base station, the states of the first indication information are set according to a predefined order, for example, if the first state is "00", the predefined order may be "00", "01", "10", "11", "00" …, and so on.

Thus, even if the UE misses the scheduling information sent by the base station at a certain time, the above embodiment enables the UE to successfully receive the retransmission CBG sent by the base station.

Optionally, in another embodiment, if the bit number of the first indication information is less than the total number of CBGs contained in the TB, for example, the total number of CBGs in fig. 4 is 4, assuming that the bit number of the first indication information is 2, the foregoing embodiment is performed; if the bit number of the first indication information is greater than or equal to the total number of CBGs contained in the TB, for example, the bit number of the first indication information is 4, it is not necessary to perform the step of "the first indication information is used for indicating the receiving status of the first feedback information" in the above embodiment, but the first indication information is directly used for indicating which CBGs are currently retransmitted CBGs, for example, the retransmitted CBGs 1 and CBG4 in TTI k in fig. 4 may be indicated as "1001" by the 4-bit first indication information, where bit 1 indicates those CBGs that are currently retransmitted, and bit 0 indicates that these CBGs are not currently retransmitted.

The method for transmitting the CBG provided by the present application is described in detail above from the perspective of the first device, and the method for receiving the CBG provided by the present application is described below from the perspective of the second device.

Fig. 5 shows a schematic flow chart of a method of receiving a CBG provided by the present application. The method 500 includes:

s510, the second device receives at least two CBGs from the first device.

S520, the second device sends first feedback information to the first device, where the first feedback information is used to feed back a decoding status of a first CBG, and the first CBG belongs to the at least two CBGs.

S530, the second device receives first indication information and a retransmission CBG from the first device, where the retransmission CBG belongs to the at least two CBGs, and the first indication information is used to indicate a receiving status of the first feedback information.

In the method 500, the second device may be, for example, a UE, and the first device may be, for example, a base station.

If the UE sends the first feedback information and then receives first indication information indicating that the first feedback information sent by the base station fails to be received, the UE may determine, according to a rule agreed with the base station: the currently received retransmission CBG is a CBG which fails to decode the UE and is fed back by first feedback information which is successfully transmitted at a previous time, wherein the successful transmission means that the UE sends the first feedback information and the base station successfully decodes the first feedback information.

As shown in fig. 4, the four CBGs sent by the base station in TTI i are initial CBGs, if the UE does not receive scheduling information for scheduling the initial CBGs, the UE may miss detection of the initial CBGs and may not send the first feedback information, and then the base station sends, in TTI j, first indication information indicating that the base station does not detect the first feedback information, and retransmits the four CBGs according to a preset rule, and after receiving the first indication information, the UE determines that the received retransmitted CBGs are actually initial CBGs according to the preset rule.

As is clear to the skilled person: in the method 500, both the base station and the UE may be identical to those in the method 300, and the actions of the base station and the UE correspond to those in the method 300, and are not repeated herein for brevity.

Optionally, the method 500 further comprises:

s540, the second device determines reference feedback information according to the first indication information, where the reference feedback information is the first feedback information successfully decoded by the first device within a preset time period.

S550, the second device determines the retransmission CBG according to the reference feedback information.

Optionally, the reference feedback information specifically includes:

and sending the first feedback information with a time unit closest to a retransmission time unit, wherein the sending time unit is a time unit for the second device to send the first feedback information, and the retransmission time unit is a time unit for the second device to receive the retransmission CBG.

The preset time period may be set arbitrarily, and the reference feedback information may be first feedback information that is transmitted successfully any time before the UE receives the first indication information.

Therefore, after the UE determines the reference feedback information, the current received and retransmitted CBGs are determined to be which CBGs according to the reference feedback information.

The above details an example of the resource scheduling method provided in the present application. It is to be understood that the first device and the second device comprise respective hardware structures and/or software modules for performing the respective functions in order to realize the above-mentioned functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. 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.

The first device and the like may be divided into functional units according to the above method examples, for example, each functional unit may be divided for each function, or two or more functions may be integrated into one processing 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. It should be noted that the division of the units in the present application is schematic, and is only one division of logic functions, and there may be another division manner in actual implementation.

Fig. 6 shows a possible schematic configuration of the first device according to the above exemplary embodiment, in the case of an integrated unit. The first device 600 includes: a processing unit 602 and a communication unit 603. The processing unit 602 is configured to control and manage actions of the first device 600, e.g., the processing unit 602 is configured to support the first device 600 to perform S320 of fig. 3 and/or other processes for the techniques described herein. The communication unit 603 is adapted to support communication of the first device 600 with other network entities, e.g. with a second device. The first device 600 may further comprise a storage unit 601 for storing program codes and data of the first device 600.

The processing unit 602 may be a processor or a controller, and may be, for example, a Central Processing Unit (CPU), a general-purpose processor, a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 603 may be a transceiver, a transceiving circuit, or the like. The storage unit 601 may be a memory.

The first device 600 provided by the present application can successfully retransmit the CBG in the case of missing detection or unsuccessfully decoding the feedback information, thereby improving the transmission efficiency of the communication system.

When the processing unit 602 is a processor, the communication unit 603 is a transceiver, and the storage unit 601 is a memory, the first device according to the present application may be the first device shown in fig. 7.

Referring to fig. 7, the first apparatus 700 includes: a processor 702, a transceiver 703, a memory 701. The transceiver 703, the processor 702, and the memory 701 may communicate with each other via an internal connection path to transfer control and/or data signals.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and no further description is provided herein.

The first device 700 provided by the present application can successfully retransmit the CBG in the case of missing detection or unsuccessfully decoding the feedback information, thereby improving the transmission efficiency of the communication system.

In the case of an integrated unit, fig. 8 shows a possible structural schematic of the second device involved in the above-described embodiment. The second device 800 includes: a processing unit 802 and a communication unit 803. The processing unit 802 is configured to control and manage actions of the second device 800, for example, the processing unit 802 is configured to enable the second device 800 to perform S510 of fig. 5 and/or other processes for the techniques described herein through the communication unit 803. The communication unit 803 is used to support communication between the second device 800 and other network entities, for example, with the first device. The second device 800 may further comprise a storage unit 801 for storing program codes and data of the second device 800.

The processing unit 802 may be a processor or a controller, and may be, for example, a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 803 may be a transceiver, a transceiving circuit, or the like. The storage unit 801 may be a memory.

The second device 800 for data transmission provided by the present application can successfully receive the retransmitted CBG in the case that the device sending the CBG fails to detect or does not successfully decode the feedback information, thereby improving the transmission efficiency of the communication system.

When the processing unit 802 is a processor, the communication unit 803 is a transceiver, and the storage unit 801 is a memory, the second device according to the present application may be the second device shown in fig. 9.

Referring to fig. 9, the second apparatus 900 includes: a processor 902, a transceiver 903, a memory 901. The transceiver 903, the processor 902, and the memory 901 may communicate with each other via internal connection paths to transfer control and/or data signals.

The second device 900 for data transmission provided by the present application can successfully receive the retransmitted CBG when the device sending the CBG fails to detect or successfully decodes the feedback information, thereby improving the transmission efficiency of the communication system.

In the embodiments of the present application, the sequence numbers of the processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the inherent logic of the processes, and should not limit the implementation processes of the present application.

In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which 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.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash memory, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable disk, a compact disc read only memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in a terminal device. Of course, the processor and the storage medium may reside as discrete components in the first device and the second device.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, 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, the procedures or functions described in accordance with the present application are generated, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in or transmitted over a computer-readable storage medium. The computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)), or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., Digital Versatile Disk (DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), etc.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application.

Claims

1. A method of transmitting a set of coding blocks, the method comprising:

the first device sends at least two coding block groups CBG to the second device;

the first device detects first feedback information, wherein the first feedback information is used for feeding back the decoding state of a first CBG, and the first CBG belongs to the at least two CBGs;

the first device sends first indication information and a retransmission CBG to the second device, wherein the retransmission CBG belongs to the at least two CBGs, and the first indication information is used for indicating the receiving state of the first feedback information.

2. The method of claim 1, further comprising:

the first device determines the retransmission CBG according to reference feedback information, wherein the reference feedback information is first feedback information which is successfully decoded within a preset time period in the detected first feedback information.

3. The method according to claim 2, wherein the reference feedback information is specifically:

4. The method according to any one of claims 1 to 3, wherein the first indication information is specifically used to indicate a receiving status of the first feedback information that a detection time unit is closest to a retransmission time unit, where the detection time unit is a time unit for the first device to detect the first feedback information, and the retransmission time unit is a time unit for the first device to send the retransmitted CBG.

5. The method according to any of claims 1 to 3, wherein the first indication information is specifically used for indicating the number of successfully decoded first feedback information in the detected first feedback information.

6. The method according to any one of claims 1 to 3, wherein the first indication information is used to indicate at least two states, the at least two states correspond to first feedback information in which at least two detection time units of the detected first feedback information are adjacent and successfully decoded, and the detection time unit is a time unit in which the first device detects the first feedback information.

7. A method of receiving a set of coding blocks, the method comprising:

the second device receives at least two coding block groups CBG from the first device;

the second device sends first feedback information to the first device, wherein the first feedback information is used for feeding back the decoding state of a first CBG, and the first CBG belongs to the at least two CBGs;

the second device receives first indication information and a retransmission CBG from the first device, wherein the retransmission CBG belongs to the at least two CBGs, and the first indication information is used for indicating the receiving state of the first feedback information.

8. The method of claim 7, further comprising:

the second device determines reference feedback information according to the first indication information, wherein the reference feedback information is the first feedback information successfully decoded by the first device within a preset time period;

and the second equipment determines the retransmission CBG according to the reference feedback information.

9. The method according to claim 8, wherein the reference feedback information is specifically:

10. The method according to any one of claims 7 to 9, wherein the first indication information is specifically used to indicate a receiving status of the first feedback information that a sending time unit is closest to a retransmission time unit, where the sending time unit is a time unit for the second device to send the first feedback information, and the retransmission time unit is a time unit for the second device to receive the retransmitted CBG.

11. The method according to any of claims 7 to 9, wherein the first indication information is specifically used for indicating the number of the first feedback information successfully decoded by the first device.

12. The method according to any of claims 7 to 9, wherein the first indication information is used to indicate at least two states, the at least two states correspond to at least two transmission time units of the first feedback information that are adjacent and successfully decoded by the first device, and the transmission time unit is a time unit for the second device to transmit the first feedback information.

13. An apparatus for transmitting a set of coding blocks, the apparatus comprising a processing unit and a communication unit, the processing unit and the communication unit communicating with each other via an internal connection path,

the communication unit is used for sending at least two coding block groups CBG to the second equipment;

the processing unit is configured to detect first feedback information, where the first feedback information is used to feed back a decoding status of a first CBG, and the first CBG belongs to the at least two CBGs;

the communication unit is further configured to send first indication information and a retransmission CBG to the second device, where the retransmission CBG belongs to the at least two CBGs, and the first indication information is used to indicate a receiving status of the first feedback information.

14. The apparatus of claim 13, wherein the processing unit is further configured to:

and determining the retransmission CBG according to reference feedback information, wherein the reference feedback information is first feedback information which is successfully decoded within a preset time period in the detected first feedback information.

15. The apparatus according to claim 14, wherein the reference feedback information is specifically:

and detecting first feedback information with a detection time unit closest to a retransmission time unit in the detected first feedback information, wherein the detection time unit is the time unit for the processing unit to detect the first feedback information, and the retransmission time unit is the time unit for the communication unit to send the retransmission CBG.

16. The apparatus according to any one of claims 13 to 15, wherein the first indication information is specifically configured to indicate a receiving status of the first feedback information that a detection time unit is closest to a retransmission time unit, where the detection time unit is a time unit for the processing unit to detect the first feedback information, and the retransmission time unit is a time unit for the communication unit to send the retransmitted CBG.

17. The apparatus according to any of claims 13 to 15, wherein the first indication information is specifically used for indicating the number of successfully decoded first feedback information in the detected first feedback information.

18. The apparatus according to any of claims 13 to 15, wherein the first indication information is used to indicate at least two states, the at least two states correspond to first feedback information in which at least two detection time units of the detected first feedback information are adjacent and successfully decoded, and the detection time unit is a time unit in which the processing unit detects the first feedback information.

19. An apparatus for receiving a set of coding blocks, the apparatus comprising a processing unit and a communication unit, the processing unit and the communication unit communicating with each other via an internal connection path,

the communication unit is used for receiving at least two coding block groups CBG from a first device;

the communication unit is further configured to send first feedback information to the first device, where the first feedback information is used to feed back a decoding status of a first CBG, and the first CBG belongs to the at least two CBGs;

the communication unit is further configured to receive first indication information and a retransmission CBG from the first device, where the retransmission CBG belongs to the at least two CBGs, and the first indication information is used to indicate a receiving status of the first feedback information.

20. The apparatus of claim 19, wherein the processing unit is configured to:

determining reference feedback information according to the first indication information, wherein the reference feedback information is the first feedback information successfully decoded by the first device within a preset time period;

and determining the retransmission CBG according to the reference feedback information.

21. The apparatus according to claim 20, wherein the reference feedback information is specifically:

and sending the first feedback information with a time unit closest to a retransmission time unit, wherein the sending time unit is the time unit for the communication unit to send the first feedback information, and the retransmission time unit is the time unit for the communication unit to receive the retransmission CBG.

22. The apparatus according to any one of claims 19 to 21, wherein the first indication information is specifically configured to indicate a receiving status of the first feedback information with a transmission time unit closest to a retransmission time unit, where the transmission time unit is a time unit for the communication unit to transmit the first feedback information, and the retransmission time unit is a time unit for the communication unit to receive the retransmitted CBG.

23. The apparatus according to any of claims 19 to 21, wherein the first indication information is specifically used for indicating the number of the first feedback information successfully decoded by the first device.

24. The apparatus according to any of claims 19 to 21, wherein the first indication information is used to indicate at least two states, the at least two states correspond to at least two transmission time units of the first feedback information that are adjacent and successfully decoded by the first device, and the transmission time unit is a time unit for the communication unit to transmit the first feedback information.