CN112134658B

CN112134658B - Method for transmitting feedback information, user equipment and access equipment

Info

Publication number: CN112134658B
Application number: CN202010825976.8A
Authority: CN
Inventors: 肖洁华; 唐浩
Original assignee: Huawei Technologies Co Ltd
Current assignee: Beijing Jingshi Intellectual Property Management Co ltd
Priority date: 2015-08-11
Filing date: 2015-08-11
Publication date: 2021-08-03
Anticipated expiration: 2035-08-11
Also published as: CN107005372A; CN107005372B; WO2017024528A1; CN112134658A

Abstract

The embodiment of the invention provides a method for transmitting feedback information, user equipment and access equipment, wherein the method comprises the following steps: the method comprises the steps that user equipment receives scheduling indication information sent by access equipment, wherein the scheduling indication information comprises scheduling cumulant and scheduling total, and the scheduling cumulant and the scheduling total are used for determining the number of carriers or scheduled code words scheduled for the user equipment by the access equipment; the user equipment sends HARQ feedback information to the access equipment, wherein the HARQ feedback information is used for indicating whether data is correctly received on the scheduled carrier or the scheduled code word, and the bit number of the HARQ feedback information is determined by the number of the scheduled carrier or the scheduled code word. The method for transmitting the feedback information, the user equipment and the access equipment can improve the performance of transmitting the HARQ feedback information.

Description

Method for transmitting feedback information, user equipment and access equipment

This application is a divisional application of the original application having application number "201580065274.1", filed on 11/8/2015, which was incorporated by reference in the present application.

Technical Field

The present invention relates to the field of communications, and in particular, to a method, a user equipment and an access device for transmitting feedback information.

Background

Hybrid Automatic Repeat Request (HARQ) is a technology combining Forward Error Correction (FEC) and Automatic Repeat Request (ARQ) methods. FEC adds redundant information to enable the receiving end to correct a portion of errors, thereby reducing the number of retransmissions. For the error that the FEC cannot correct, the receiving end requests the transmitting end to retransmit the data through an ARQ mechanism. The receiving end uses an error detection code, typically a CRC check, to detect whether the received data packet is erroneous. If there is no error, a positive Acknowledgement (ACK) is sent; if the error occurs, the receiving end discards the data packet and sends a Negative Acknowledgement (NACK) to the transmitting end, and the transmitting end retransmits the same data after receiving the NACK.

Carrier Aggregation (CA) is a process of aggregating 2 or more Component Carriers (CCs) together to transmit data to support a larger transmission bandwidth. In a CA scenario, HARQ feedback information of multiple aggregated component carriers is usually fed back through only one primary carrier, the bit number of the HARQ feedback information is determined by the number of configured aggregatable carriers and a Transmission Mode (TM), and when the number of scheduled carriers is less than the number of configured aggregatable carriers or a scheduled CodeWord (CW) is less than a maximum CW in the TM Mode, some redundant bit information needs to be filled in the HARQ feedback information, so that the filled information may cause performance degradation of effectively transmitting the HARQ feedback information.

Disclosure of Invention

The embodiment of the invention provides a method for transmitting feedback information, user equipment and access equipment, which can improve the performance of transmitting HARQ feedback information.

In a first aspect, a method for transmitting feedback information is provided, where the method includes:

the method comprises the steps that user equipment receives scheduling indication information sent by access equipment, wherein the scheduling indication information comprises scheduling cumulant and scheduling total, and the scheduling cumulant and the scheduling total are used for determining the number of carriers or scheduled code words scheduled for the user equipment by the access equipment;

the user equipment sends HARQ feedback information to the access equipment, wherein the HARQ feedback information is used for indicating whether data is correctly received on the scheduled carrier or the scheduled code word, and the bit number of the HARQ feedback information is determined by the number of the scheduled carrier or the scheduled code word.

With reference to the first aspect, in a first implementation manner of the first aspect, the scheduling cumulative number is a first carrier cumulative number on one downlink subframe, the scheduling total number is a first carrier total number on the one downlink subframe, an order and a number of the scheduled carriers are determined by the first carrier cumulative number on the one downlink subframe and the first carrier total number on the one downlink subframe, and a bit number of the HARQ feedback information is the number of the scheduled carriers; or,

the scheduling cumulative number is a second carrier cumulative number on a plurality of downlink subframes, the scheduling total number is a second carrier total number on the plurality of downlink subframes, the sequence and the number of the scheduled carriers are determined by the second carrier cumulative number on the plurality of downlink subframes and the second carrier total number on the plurality of downlink subframes, and the bit number of the HARQ feedback information is the number of the scheduled carriers.

With reference to the first aspect, in a second implementation manner of the first aspect, the scheduling cumulative number is a second carrier cumulative number on a plurality of downlink subframes, the scheduling total number is a first carrier total number on each of the plurality of downlink subframes, an order and a number of the scheduled carriers are determined by the second carrier cumulative number on the plurality of downlink subframes and the first carrier total number on each of the plurality of downlink subframes, and a bit number of the HARQ feedback information is the number of the scheduled carriers.

The scheduling cumulative number is a second carrier cumulative number on the plurality of downlink subframes, and the scheduling total number is a third carrier total number on a first subframe set in the plurality of downlink subframes, wherein the first subframe set comprises a current downlink subframe and a downlink subframe before the current downlink subframe, the order and the number of the scheduled carriers are determined by the second carrier cumulative number on the plurality of downlink subframes and a third carrier total number on the first subframe set in the plurality of downlink subframes, and the bit number of the HARQ feedback information is the number of the scheduled carriers; or,

the scheduling cumulative number is a first carrier cumulative number on each downlink subframe in a plurality of downlink subframes, the scheduling total number is a first carrier total number on each downlink subframe in the plurality of downlink subframes, the sequence and the number of the scheduled carriers are determined by the first carrier cumulative number on each downlink subframe in the plurality of downlink subframes and the first carrier total number on each downlink subframe in the plurality of downlink subframes, and the bit number of the HARQ feedback information is the number of the scheduled carriers.

With reference to the second implementation manner of the first aspect, in a third implementation manner of the first aspect, the scheduling indication information further includes a total number of first scheduling carriers on the multiple downlink subframes, where the total number of the first scheduling carriers on the multiple downlink subframes is carried in uplink Assignment information UL Assignment, an order and a number of the scheduling carriers are determined by the scheduling accumulation number, the scheduling total number, and the total number of the first carriers on the multiple downlink subframes, and a bit number of the HARQ feedback information is the number of the scheduling carriers.

With reference to any one of the first to third implementation manners of the first aspect, in a fourth implementation manner of the first aspect, the sending, by the user equipment, HARQ feedback information to the access equipment includes:

the user equipment sends the HARQ feedback information to the access equipment, and the sequence of the HARQ feedback information is that each downlink subframe is arranged according to the sequence of the HARQ feedback information of each scheduled carrier firstly and then is arranged according to the sequence of the HARQ feedback information on each downlink subframe.

With reference to the first aspect, in a fifth implementation manner of the first aspect, the scheduling cumulative number is a first codeword cumulative number on one downlink subframe, the scheduling total number is a first codeword total number on the one downlink subframe, an order and a number of scheduled codewords are determined by the first codeword cumulative number on the one downlink subframe and the first codeword total number on the one downlink subframe, and a bit number of the HARQ feedback information is the number of scheduled codewords; or,

the scheduling cumulative number is a second codeword cumulative number on a plurality of downlink subframes, the scheduling total number is a second codeword total number on the plurality of downlink subframes, the order and number of the scheduled codewords are determined by the second codeword cumulative number on the plurality of downlink subframes and the second codeword total number on the plurality of downlink subframes, and the bit number of the HARQ feedback information is the number of the scheduled codewords.

With reference to the first aspect, in a sixth implementation manner of the first aspect, the scheduling cumulative number is a second codeword cumulative number on a plurality of downlink subframes, the scheduling total number is a first codeword total number on each downlink subframe in the plurality of downlink subframes, an order and number of the scheduled codewords are determined by the second codeword cumulative number on the plurality of downlink subframes and the first codeword total number on each downlink subframe in the plurality of downlink subframes, and a bit number of the HARQ feedback information is the number of the scheduled codewords; or,

the scheduling cumulative number is a second codeword cumulative number on the plurality of downlink subframes, and the scheduling total number is a third codeword total number on a first subframe set in the plurality of downlink subframes, wherein the first subframe set comprises a current downlink subframe and a downlink subframe before the current downlink subframe, the order and number of the scheduled codewords are determined by the second codeword cumulative number on the plurality of downlink subframes and the third codeword total number on the first subframe set in the plurality of downlink subframes, and the bit number of the HARQ feedback information is the number of the scheduled codewords; or,

the scheduling cumulative number is a first codeword cumulative number on each downlink subframe in a plurality of downlink subframes, the scheduling total number is a first codeword total number on each downlink subframe in the plurality of downlink subframes, the sequence and number of the scheduled codewords are determined by the first codeword cumulative number on each downlink subframe in the plurality of downlink subframes and the first codeword total number on each downlink subframe in the plurality of downlink subframes, and the bit number of the HARQ feedback information is the number of the scheduled codewords.

With reference to the sixth implementation manner of the first aspect, in a seventh implementation manner of the first aspect, the scheduling indication information further includes a total number of first scheduling codewords on the multiple downlink subframes, where the total number of the first scheduling codewords on the multiple downlink subframes is carried in uplink Assignment information UL Assignment, an order and a number of the scheduled codewords are determined by the scheduling cumulative number, the scheduling total number, and the total number of the first scheduling codewords on the multiple downlink subframes, and a bit number of the HARQ feedback information is the number of the scheduled codewords.

With reference to any one of the fifth to seventh implementation manners of the first aspect, in an eighth implementation manner of the first aspect, the scheduling indication information further includes home carrier indication information of a scheduled codeword, where the home carrier indication information of the scheduled codeword is carried in uplink Assignment information UL Assignment, and the method further includes:

and performing spatial binding processing on the HARQ feedback information of two scheduled code words belonging to the same carrier.

With reference to the first aspect and the foregoing implementation manner, in a ninth implementation manner of the first aspect, the scheduling cumulative number and the scheduling total number are carried in downlink Assignment information DL Assignment.

In a second aspect, a method for transmitting feedback information is provided, the method comprising:

the access equipment sends scheduling indication information to User Equipment (UE), wherein the scheduling indication information comprises scheduling cumulant and scheduling total, and the scheduling cumulant and the scheduling total are used for determining the number of carriers or scheduled code words scheduled for the user equipment by the access equipment;

the access device receives HARQ feedback information sent by the UE, and the bit number of the HARQ feedback information is determined by the number of the scheduled carrier or the scheduled code word.

With reference to the second aspect, in a first implementation manner of the second aspect, the scheduling cumulative number is a first carrier cumulative number on one downlink subframe, and the scheduling total number is a first carrier total number on the one downlink subframe; or,

the scheduling cumulative number is a second carrier cumulative number on a plurality of downlink subframes, and the scheduling total number is a second carrier total number on the plurality of downlink subframes.

With reference to the second aspect, in a second implementation manner of the second aspect, the scheduling cumulative number is a second carrier cumulative number on a plurality of downlink subframes, and the scheduling total number is a first carrier total number on each downlink subframe in the plurality of downlink subframes; or,

the scheduling cumulative number is a third carrier cumulative number on a first subframe set in the plurality of downlink subframes, and the scheduling total number is a third carrier total number on the first subframe set in the plurality of downlink subframes, wherein the first subframe set comprises a current downlink subframe and a downlink subframe before the current downlink subframe; or,

the scheduling cumulative number is a first carrier cumulative number on each downlink subframe in the plurality of downlink subframes, and the scheduling total number is a first carrier total number on each downlink subframe in the plurality of downlink subframes.

With reference to the second implementation manner of the second aspect, in a third implementation manner of the second aspect, the scheduling indication information further includes a total number of first scheduling carriers on the multiple downlink subframes, where the total number of the first scheduling carriers on the multiple downlink subframes is carried in uplink Assignment information UL Assignment, and the total number of the first scheduling carriers on the multiple downlink subframes is used for determining the number of scheduled carriers by the UE.

With reference to the second aspect, in a fourth implementation manner of the second aspect, the scheduling cumulative number is a first codeword cumulative number on the one downlink subframe, and the scheduling total number is a first codeword total number on the one downlink subframe; or,

the scheduling cumulative number is a second codeword cumulative number on a plurality of downlink subframes, and the scheduling total number is a second codeword total number on the plurality of downlink subframes.

With reference to the second aspect, in a fifth implementation manner of the second aspect, the scheduling cumulative number is a second codeword cumulative number on a plurality of downlink subframes, and the scheduling total number is a first codeword total number on each downlink subframe in the plurality of downlink subframes; or,

the scheduling cumulative number is a third codeword cumulative number on a first subframe set of the plurality of downlink subframes, and the scheduling total number is a third codeword total number on the first subframe set of the plurality of downlink subframes, wherein the first subframe set comprises a current downlink subframe and a downlink subframe before the current downlink subframe; or,

the scheduling cumulative number is a first codeword cumulative number on each downlink subframe in a plurality of downlink subframes, and the scheduling total number is a first codeword total number on each downlink subframe in the plurality of downlink subframes.

With reference to the second aspect and the foregoing implementation manner, in a sixth implementation manner of the second aspect, the scheduling indication information further includes a total number of first scheduling codewords on the multiple downlink subframes, where the total number of the first scheduling codewords on the multiple downlink subframes is carried in uplink Assignment information UL Assignment, and the total number of the first scheduling codewords on the multiple downlink subframes is used for determining the number of scheduled codewords by the UE.

With reference to the second aspect and the foregoing implementation manner, in a seventh implementation manner of the second aspect, the scheduling cumulative number and the scheduling total number are carried in downlink Assignment information DL Assignment.

In a third aspect, a user equipment is provided, including:

a receiving module, configured to receive scheduling indication information sent by an access device, where the scheduling indication information includes a scheduling cumulative number and a scheduling total number, and the scheduling cumulative number and the scheduling total number are used to determine the number of carriers or scheduled codewords that are scheduled for the user equipment by the access device;

a sending module, configured to send HARQ feedback information to the access device, where the HARQ feedback information is used to indicate whether data is correctly received on the scheduled carrier or the scheduled codeword, and a bit number of the HARQ feedback information is determined by the number of the scheduled carrier or the scheduled codeword.

With reference to the third aspect, in a first implementation manner of the third aspect, the scheduling cumulative number is a first carrier cumulative number on one downlink subframe, the scheduling total number is a first carrier total number on the one downlink subframe, an order and a number of the scheduled carriers are determined by the first carrier cumulative number on the one downlink subframe and the first carrier total number on the one downlink subframe, and a bit number of the HARQ feedback information is the number of the scheduled carriers; or,

With reference to the third aspect, in a second implementation manner of the third aspect, the scheduling cumulative number is a second carrier cumulative number on a plurality of downlink subframes, the scheduling total number is a first carrier total number on each downlink subframe in the plurality of downlink subframes, an order and number of the scheduled carriers are determined by the second carrier cumulative number on the plurality of downlink subframes and the first carrier total number on each downlink subframe in the plurality of downlink subframes, and a bit number of the HARQ feedback information is the number of the scheduled carriers; or

With reference to the second implementation manner of the third aspect, in a third implementation manner of the third aspect, the scheduling indication information further includes a total number of first scheduling carriers on the multiple downlink subframes, where the total number of the first scheduling carriers on the multiple downlink subframes is carried in uplink Assignment information UL Assignment, an order and a number of the scheduling carriers are determined by the scheduling accumulation number, the scheduling total number, and the total number of the first carriers on the multiple downlink subframes, and a bit number of the HARQ feedback information is the number of the scheduling carriers.

With reference to any implementation manner of the first to third implementation manners of the third aspect, in a fourth implementation manner of the third aspect, the sending module is specifically configured to:

and sending the HARQ feedback information to the access equipment, wherein the sequence of the HARQ feedback information is that each downlink subframe is arranged according to the sequence of the HARQ feedback information of each scheduled carrier firstly and then is arranged according to the sequence of the HARQ feedback information on each downlink subframe.

With reference to the third aspect, in a fifth implementation manner of the second aspect, the scheduling cumulative number is a first codeword cumulative number on one downlink subframe, the scheduling total number is a first codeword total number on the one downlink subframe, an order and a number of the scheduled codewords are determined by the first codeword cumulative number on the one downlink subframe and the first codeword total number on the one downlink subframe, and a bit number of the HARQ feedback information is the number of the scheduled codewords; or,

With reference to the third aspect, in a sixth implementation manner of the second aspect, the scheduling cumulative number is a second codeword cumulative number on multiple downlink subframes, the scheduling total number is a first codeword total number on each downlink subframe in the multiple downlink subframes, an order and number of the scheduled codewords are determined by the second codeword cumulative number on the multiple downlink subframes and the first codeword total number on each downlink subframe in the multiple downlink subframes, and a bit number of the HARQ feedback information is the number of the scheduled codewords; or,

With reference to the fifth implementation manner or the sixth implementation manner of the third aspect, in a seventh implementation manner of the second aspect, the scheduling indication information further includes a total number of first scheduling codewords on the multiple downlink subframes, the total number of the first scheduling codewords on the multiple downlink subframes is carried in uplink Assignment information UL Assignment, an order and a number of the scheduled codewords are determined by the scheduling cumulative number, the scheduling total number, and the total number of the first scheduling codewords on the multiple downlink subframes, and the bit number of the HARQ feedback information is the number of the scheduled codewords.

With reference to the third aspect and the foregoing implementation manner, in an eighth implementation manner of the second aspect, the scheduling indication information further includes home carrier indication information of a scheduled codeword, where the home carrier indication information of the scheduled codeword is carried in uplink Assignment information UL Assignment, and the method further includes:

and the processing module is used for performing spatial binding processing on the HARQ feedback information of the two scheduled code words belonging to the same carrier.

With reference to the third aspect and the foregoing implementation manner, in an eighth implementation manner of the second aspect, the scheduling cumulative number and the scheduling total number are carried in downlink Assignment information DL Assignment.

In a fourth aspect, an access device is provided, including:

a sending module, configured to send scheduling indication information to a user equipment UE, where the scheduling indication information includes a scheduling cumulative number and a scheduling total number, and the scheduling cumulative number and the scheduling total number are used to determine the number of carriers or scheduled codewords that are scheduled by the access device for the user equipment;

a receiving module, configured to receive HARQ feedback information sent by the UE, where a bit number of the HARQ feedback information is determined by the number of the scheduled carrier or the scheduled codeword.

With reference to the fourth aspect, in a first implementation manner of the fourth aspect, the scheduling cumulative number is a first carrier cumulative number on one downlink subframe, and the scheduling total number is a first carrier total number on the one downlink subframe; or,

With reference to the fourth aspect and the foregoing implementation manner, in a second implementation manner of the fourth aspect, the scheduling cumulative number is a second carrier cumulative number on a plurality of downlink subframes, and the scheduling total number is a first carrier total number on each downlink subframe in the plurality of downlink subframes; or,

With reference to the fourth aspect and the foregoing implementation manner of the fourth aspect, in a third implementation manner of the fourth aspect, the scheduling indication information further includes a total number of first scheduling carriers on the multiple downlink subframes, where the total number of the first scheduling carriers on the multiple downlink subframes is carried in uplink Assignment information UL Assignment, and the total number of the first scheduling carriers on the multiple downlink subframes is used by the UE to determine the number of scheduled carriers.

With reference to the fourth aspect and the foregoing implementation manner of the fourth aspect, in a fourth implementation manner of the fourth aspect, the scheduling cumulative number is a first codeword cumulative number on the one downlink subframe, and the scheduling total number is a first codeword total number on the one downlink subframe; or,

With reference to the fourth aspect and the foregoing implementation manner, in a fifth implementation manner of the fourth aspect, the scheduling cumulative number is a second codeword cumulative number on a plurality of downlink subframes, and the scheduling total number is a first codeword total number on each downlink subframe in the plurality of downlink subframes; or,

With reference to the fourth aspect and the foregoing implementation manner, in a sixth implementation manner of the fourth aspect, the scheduling indication information further includes a total number of first scheduling codewords on the multiple downlink subframes, where the total number of the first scheduling codewords on the multiple downlink subframes is carried in uplink Assignment information UL Assignment, and the total number of the first scheduling codewords on the multiple downlink subframes is used for determining the number of scheduled codewords by the UE.

With reference to the fourth aspect and the foregoing implementation manner of the fourth aspect, in a seventh implementation manner of the fourth aspect, the scheduling cumulative number and the scheduling total number are carried in downlink Assignment information DL Assignment.

Based on the above technical solution, the method for transmitting feedback information, the user equipment and the access device of the embodiments of the present invention can determine the number of carriers scheduled by the access device for the user equipment or the number of codewords scheduled according to the scheduling cumulative number and the scheduling total number included in the scheduling indication information, and then determine the bit number of the HARQ feedback information according to the number of carriers scheduled or codewords scheduled, so that the HARQ feedback information of carriers not scheduled or codewords not scheduled does not need to be filled, thereby improving the performance of transmitting the HARQ feedback information.

Drawings

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

Fig. 1 is a schematic flow chart of a method of transmitting feedback information according to an embodiment of the present invention.

Fig. 2 is a diagram illustrating a method of transmitting feedback information according to an embodiment of the present invention.

Fig. 3 is a diagram illustrating a method of transmitting feedback information according to another embodiment of the present invention.

Fig. 4 is a diagram illustrating a method of transmitting feedback information according to still another embodiment of the present invention.

Fig. 5 is a diagram illustrating a method of transmitting feedback information according to still another embodiment of the present invention.

Fig. 6 is a diagram illustrating a method of transmitting feedback information according to still another embodiment of the present invention.

Fig. 7 is a diagram illustrating a method of transmitting feedback information according to still another embodiment of the present invention.

Fig. 8 is a diagram illustrating a method of transmitting feedback information according to still another embodiment of the present invention.

Fig. 9 is a diagram illustrating a method of transmitting feedback information according to still another embodiment of the present invention.

Fig. 10 is a diagram illustrating a method of transmitting feedback information according to still another embodiment of the present invention.

Fig. 11 is a diagram illustrating a method of transmitting feedback information according to still another embodiment of the present invention.

Fig. 12 is a diagram illustrating a method of transmitting feedback information according to still another embodiment of the present invention.

Fig. 13 is a schematic flow chart diagram of a method of transmitting feedback information according to another embodiment of the present invention.

Fig. 14 is a schematic block diagram of a user equipment according to an embodiment of the present invention.

Fig. 15 is a schematic block diagram of an access device according to an embodiment of the present invention.

Fig. 16 is a schematic block diagram of a user equipment according to another embodiment of the present invention.

Fig. 17 is a schematic block diagram of an access device according to another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical scheme of the invention can be applied to various communication systems, such as: global System for Mobile communications (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Frequency Division Duplex (FDD) or Time Division Duplex (TDD) systems of Long Term Evolution (LTE), and the like.

User Equipment (UE), also referred to as Mobile Terminal (Mobile Terminal), Mobile User Equipment (ms), etc., may communicate with one or more core networks via a Radio Access Network (e.g., RAN), and may be Mobile terminals, such as Mobile phones (or "cellular" phones) and computers having Mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted Mobile devices, that exchange language and/or data with the Radio Access Network.

The access device may be an access device in GSM or CDMA, an access device in WCDMA, or an access device in LTE, which is not limited in the present invention.

Fig. 1 shows a schematic flow diagram of a method 1000 of transmitting feedback information according to an embodiment of the present invention, the method 1000 being performed by a user equipment, the method 1000 comprising:

s1100, a user device receives scheduling indication information sent by an access device, wherein the scheduling indication information comprises scheduling cumulant and scheduling total number, and the scheduling cumulant and the scheduling total number are used for determining the number of carriers or scheduled code words scheduled for the user device by the access device;

s1200, the ue sends HARQ feedback information to the access device, where the HARQ feedback information is used to indicate whether data is correctly received on a scheduled carrier or a scheduled codeword, and a bit number of the HARQ feedback information is determined by the number of the scheduled carriers or the scheduled codewords.

In this embodiment of the present invention, a UE receives scheduling indication Information sent by an access device, where the scheduling indication Information includes a scheduling cumulative number and a scheduling total number, and the scheduling cumulative number and the scheduling total number are used to determine the number of carriers or scheduled codewords scheduled by the access device for the UE, and optionally, the UE may receive Downlink Assignment Information (DL Assignment) Information sent by the access device, where the DL Assignment Information includes a Downlink Control Information format (DCI format) 1/1a/1B/1D/2/2A/2B/2C/2D, and the Downlink Assignment Information includes the scheduling cumulative number and the scheduling total number. The UE determines the number of carriers scheduled by the access equipment for the user equipment or the number of scheduled code words according to the scheduling accumulated number and the scheduling total number, and then the UE determines the bit number of the HARQ feedback information according to the number of the scheduled carriers or the scheduled code words, so that the HARQ feedback information of the carriers which are not scheduled or the scheduled code words is not required to be filled in the HARQ feedback information. And then the UE sends the HARQ feedback information determined according to the number of the scheduled carriers or the scheduled code words to the access equipment. For example, if the number of carriers that can be used for transmitting data and configured by the access device for the ue is 10, and the number of scheduled carriers is 6, and if the scheduling code word of each carrier is 1, the number of bits of the HARQ feedback information may be determined to be 6. Optionally, the UE may also determine which scheduled carriers have failed downlink data transmission according to the receiving condition of the scheduling indication information, for example, if the total scheduling number included in the scheduling indication information received by the UE is 10, and the UE receives scheduling indication information of 8 scheduled carriers, it may be determined that 2 scheduled carriers have failed scheduling indication information transmission, the UE may determine which scheduled carrier or scheduled codeword has failed data reception according to the scheduling accumulation number included in the scheduling indication information, and then the UE may fill NACK in HARQ feedback information of the two scheduled carriers.

Therefore, the method for transmitting feedback information according to the embodiment of the present invention can determine the number of carriers scheduled by the access device for the user equipment or the number of codewords scheduled according to the scheduling cumulative number and the scheduling total number included in the scheduling indication information, and then determine the bit number of the HARQ feedback information according to the number of the carriers scheduled or the codewords scheduled, so that the HARQ feedback information of carriers not scheduled or codewords not scheduled does not need to be filled, thereby improving the performance of transmitting the HARQ feedback information.

Optionally, in this embodiment of the present invention, the scheduling cumulative number is a first carrier cumulative number on one downlink subframe, the scheduling total number is a first carrier total number on the one downlink subframe, the order and the number of the scheduled carriers are determined by the first carrier cumulative number on the one downlink subframe and the first carrier total number on the one downlink subframe, and the bit number of the HARQ feedback information is the number of the scheduled carriers.

Specifically, for example, in an FDD scenario or a TDD uplink/downlink configuration is 0 or 6, one uplink subframe corresponds to HARQ feedback information of one downlink subframe, where a feedback window M is 1, the scheduling cumulative number may be a first carrier cumulative number on one downlink subframe, the scheduling total number may be a first carrier total number on the one downlink subframe, and optionally, the first carrier cumulative number on the one downlink subframe and the first carrier total number on the one downlink subframe may be carried in the downlink assignment information. The UE may determine the number of scheduled carriers according to the first carrier accumulation number on the downlink subframe and the total number of first carriers on the downlink subframe, and further may determine the bit number of the HARQ feedback information according to the number of scheduled carriers.

For example, fig. 2 is an FDD scenario or a TDD feedback window M ═ 1 scenario, in fig. 2, the scheduling cumulative number included in the scheduling indication information received by the UE is a first carrier cumulative number on a downlink subframe, and the scheduling total number is a first carrier total number on the downlink subframe, as shown in fig. 2, the number of available carriers configured on the downlink subframe by the access device is 10, the carrier numbers are from CC1 to CC10, actually scheduled carriers are carriers No. 1, No. 2, No. 4, No. 6, No. 9, and No. 10, the UE receives the scheduling indication information sent by the access device, and the scheduling cumulative number and the scheduling total number included in the scheduling indication information acquired by the UE include: 1/6, 2/6, 4/6, 5/6, the UE actually receives the scheduling indication information of 4 carriers, and 6 scheduled carriers can be known from the total number of the first carriers in the scheduling indication information being 6. Since the first carrier accumulation number is a cyclic accumulation number starting from 1, it is judged that the scheduling indication information of the scheduled carriers of which the first carrier accumulation number is 3 and 6 is lost according to the continuity of the first carrier accumulation number. On the downlink subframe, two codewords are scheduled by some scheduled carriers, one codeword is scheduled by some scheduled carriers, the UE does not know that the carrier losing the scheduling indication information corresponds to several codewords, optionally, the HARQ feedback information of the carriers for the two scheduled codewords can be spatially bundled (i.e., the HARQ feedback information of the two codewords is subjected to and operation), so that the number of bits of the HARQ feedback information corresponding to the 6 scheduled carriers is the number of scheduled carriers, i.e., 6 bits, and each 1 bit represents the HARQ feedback information of 1 scheduled carrier. For the scheduled carrier with the failure in receiving the scheduling indication information, the HARQ feedback information is NACK, the HARQ feedback information of other scheduled carriers determines to be feedback ACK or NACK according to whether the data is correctly received on the scheduled carrier, and if the data is correctly received, the ACK is fed back; otherwise, NACK is fed back. For example, the scheduling indication information of the carriers with the first carrier accumulation numbers of 3 and 6 fails to be received, and NACK is fed back; the scheduling indication information of the carriers with the first carrier accumulation number of 1,4 and 5 is successfully received, the downlink data is correctly received, and ACK is fed back; and scheduling two code words by the carrier with the first carrier cumulative number of 2, wherein the downlink data of one code word is correctly received, the downlink data of the other code word is not correctly received, performing spatial binding processing on the HARQ feedback information of the two code words, and feeding back NACK. Optionally, in the embodiment of the present invention, the HARQ feedback information is arranged in sequence according to a scheduled carrier frequency domain sequence (which may also be a carrier sequence number, and is similar to that in the following embodiments and is not described here again). For example, the HARQ feedback information of the scheduled carriers are then sequentially arranged in the order of the first carrier accumulation number cycle accumulation. Then, the HARQ feedback information of the 6 scheduled carriers may be 100110. In addition, optionally solving the problem that different scheduling carrier scheduling code words are different, a method of uniformly feeding back the number of HARQ bits according to the direction of the scheduling code words of a plurality of carrier may also be adopted, for example, if 1 code word corresponds to the TM mode of 8 carriers among 10 available carriers, and 2 code words correspond to the other 2 carriers, then the uniform result is that each carrier feeds back one bit, and the HARQ feedback information of the carrier of 2 code words is spatially bound; on the contrary, if the code words corresponding to 8 carriers are 2 code words, and the other 2 carrier words correspond to 1 code word, the carrier waves corresponding to 1 code word can be partially filled to complement the bit number of the HARQ feedback information. In short, the problem of different code words scheduled by different scheduled carriers is to unify the bit number of the HARQ feedback information of each carrier to a same value. If there is no special statement, the following examples all take the solution that all the carriers of 2 codewords are spatially bundled as an example. It should also be noted that if the UE does not receive any downlink scheduling indication information on the subframe, HARQ information is not fed back to the access device. The access device, without receiving the HARQ feedback information, will naturally retransmit the unsuccessfully received data.

It should be understood that the first carrier accumulation number on the one downlink subframe is a cyclic accumulation count value, for example, if the first carrier accumulation number occupies 4 bits, the first carrier accumulation number may be cyclically accumulated from 1 to 16 in the order of scheduled carriers on the downlink subframe, if the first carrier accumulation number occupies 6 bits, the first carrier accumulation number may be cyclically accumulated from 1 to 64 in the order of scheduled carriers on the downlink subframe, the first carrier accumulation number may also be 2 bits or 5 bits, and the like, which is not limited by this invention, and when the first carrier accumulation number is n bits, the first carrier accumulation number may be sequentially accumulated from 1 to 2 in the order of 1 to 2ⁿAccumulating in a circulating way; the one down subThe total number of the first carriers on the frame is the number of the scheduled carriers on the downlink subframe, and if the total number of the first carriers occupies 4 bits, the total number of the first carriers may be simplified as modulo 16, and similarly, if the total number of the first carriers occupies 6 bits, the total number of the first carriers may be simplified as modulo 32, and the total number of the first carriers may also be 2 bits or 5 bits, and the likeⁿThe remainder of the remainder is found. Other expressions of the scheduling cumulative number and the scheduling total number are similar to the implementation principle of the first carrier cumulative number and the first carrier total number, and are not described in detail below.

Optionally, in this embodiment of the present invention, the scheduling cumulative number is a second carrier cumulative number on multiple downlink subframes, the scheduling total number is a second carrier total number on the multiple downlink subframes, the order and number of the scheduled carriers are determined by the second carrier cumulative number on the multiple downlink subframes and the second carrier total number on the multiple downlink subframes, and the bit number of the HARQ feedback information is the number of the scheduled carriers.

For example, when the TDD uplink/downlink configuration is 3, the uplink subframe 2 corresponds to HARQ feedback information of 3 downlink subframes, that is, the feedback window M is 3, that is, one uplink subframe feeds back HARQ feedback information of 3 downlink subframes. In this case, the scheduling cumulative number may be a second carrier cumulative number over a plurality of downlink subframes, and the scheduling total number may be a second carrier total number over the plurality of downlink subframes, and optionally, the second carrier cumulative number over the plurality of downlink subframes and the second carrier total number over the plurality of downlink subframes may be carried in the downlink assignment information. The UE may determine the sequence and the number of the scheduled carriers according to the cumulative number of the second carriers on the multiple downlink subframes and the total number of the second carriers on the multiple downlink subframes, and further determine that the number of the scheduled carriers is the bit number of the HARQ feedback information.

It should be understood that the second carrier accumulation number in the plurality of downlink subframes is a cyclic accumulation count value, the second carrier accumulation number of the scheduled carrier in the second downlink subframe in the plurality of downlink subframes is accumulated on the basis of the second carrier accumulation number in the first downlink subframe, instead of being accumulated again from 1, and the second carrier accumulation numbers in the following downlink subframes are also accumulated on the basis of the second carrier accumulation numbers in the preceding downlink subframes. That is, the second carrier accumulation number is accumulated and counted over the whole plurality of downlink subframes; the total number of the second carriers on the downlink subframes is the sum of the number of times that the scheduled carrier on the downlink subframes is scheduled on the downlink subframes, and may also be understood as the sum of the number of the scheduled carriers on each downlink subframe in the downlink subframes, and the scheduled carrier is counted in the total number of the second carriers after being scheduled once on the downlink subframes, and is counted in the total number of the second carriers after being scheduled three times on 3 downlink subframes.

It should also be understood that, when the feedback window M is 1, that is, when one uplink subframe corresponds to one downlink subframe, the number of scheduled carriers is the number of scheduled carriers on the downlink subframe, and may also be the number of scheduled carriers, and these two values are equal; when the feedback window M >1, that is, when one uplink subframe corresponds to multiple downlink subframes, the number of the scheduled carriers is the total number of times that carriers are scheduled on the multiple downlink subframes, that is, one scheduled carrier is scheduled 3 times on the multiple downlink subframes, and the number of the scheduled carriers is counted by 3.

For example, fig. 3 is a TDD M — 3 scenario, in fig. 3, the scheduling accumulation number included in the scheduling indication information received by the UE is a second carrier accumulation number on 3 downlink subframes, the scheduling total number is a second carrier total number on the multiple downlink subframes (the 3 downlink subframes include subframe 1, subframe 2, and subframe 3), and the scheduling accumulation number and the scheduling total number included in the scheduling indication information received by the UE include, within the entire feedback window M: 1/11, 2/11, 5/11, 6/11, 7/11, 10/11. From the above parameters, it can be known that the total number of the second carriers is 11, so that the carriers are scheduled 11 times on the 3 downlink subframes, that is, the number of the scheduled carriers on the 3 downlink subframes is 11, and then the bit number of the HARQ feedback information is also 11 bits. According to the continuity of the second carrier accumulation number, it can be known that the scheduling indication information of the scheduled carriers with the second carrier accumulation number of 3, 4, 8, 9 and 11 fails to be received and NACK is fed back, and the scheduling indication information of the scheduled carriers with the second carrier accumulation number of 6 succeeds to be received, but the downlink data fails to be received and NACK is also fed back. Optionally, in the embodiment of the present invention, the HARQ feedback information may be that each downlink subframe is arranged according to the sequence of the HARQ feedback information of each scheduled carrier first, and then arranged according to the sequence of the HARQ feedback information on each downlink subframe, that is, the HARQ feedback information of the scheduled carrier is arranged sequentially according to the sequence of the second carrier cumulative number cycle. Thus, the 11-bit HARQ feedback information may be 11001010010.

Optionally, in this embodiment of the present invention, the scheduling cumulative number is a second carrier cumulative number on multiple downlink subframes, the scheduling total number is a first carrier total number on each downlink subframe in the multiple downlink subframes, the order and the number of the scheduled carriers are determined by the second carrier cumulative number on the multiple downlink subframes and the first carrier total number on each downlink subframe in the multiple downlink subframes, and the bit number of the HARQ feedback information is the number of the scheduled carriers.

Specifically, the scheduling cumulative number may be a second cumulative number of carriers over a plurality of downlink subframes, and the scheduling total number may be a first total number of carriers over each of the plurality of downlink subframes, and optionally, the second cumulative number of carriers over the plurality of downlink subframes and the first total number of carriers over each of the plurality of downlink subframes may be carried in the downlink assignment information. The UE may determine the sequence and the number of scheduled carriers according to the cumulative number of the second carriers on the multiple downlink subframes and the total number of the first carriers on each downlink subframe in the multiple downlink subframes, and further determine that the number of the scheduled carriers is the bit number of the HARQ feedback information.

It should be understood that the cumulative number of the second carriers over the multiple downlink subframes is a cycle cumulative count value, and as defined in the above embodiments, which is not described herein again, the total number of the first carriers over each of the multiple downlink subframes is the number of scheduled carriers over each of the multiple downlink subframes. For example, if there are 6 scheduled carriers on a first downlink subframe of the plurality of downlink subframes, the total number of first carriers of the scheduled carriers on the first downlink subframe is 6, and if there are 3 scheduled carriers on a second downlink subframe of the plurality of downlink subframes, the total number of first carriers of the scheduled carriers on the second downlink subframe is 3. That is, the first total number of carriers on each of the plurality of downlink subframes is for each downlink subframe.

For example, fig. 4 is a TDD M — 3 scenario, in fig. 4, the scheduling accumulation number is a second accumulation number of carriers over 3 downlink subframes, the scheduling total number is a first total number of carriers over each downlink subframe in the 3 downlink subframes (the 3 downlink subframes include subframe 1, subframe 2, and subframe 3), and the number of available carriers configured on each downlink subframe is 10. In the whole feedback window M, the scheduling cumulative number and the scheduling total number included in the scheduling indication information received by the UE include: 1/3, 2/3, 5/5, 6/5, 7/5, 10/3. As can be seen from the above parameters, the total number of the first carriers on the subframe 1 is 3, that is, the number of the scheduled carriers on the subframe 1 is 3; the total number of the first carriers on the subframe 2 is 5, that is, the number of the scheduled carriers on the subframe 2 is 5; the total number of the first carriers on subframe 3 is 3, that is, the number of the scheduled carriers on subframe 3 is 3, then the sum of the number of the scheduled carriers on the 3 downlink subframes is 11, and thus the bit number of the HARQ feedback information is also 11 bits. And scheduling indication information of scheduled carriers with the second carrier accumulation number of 3 is lost on the subframe 1, and since the second carrier accumulation number maintains continuity over the whole 3 subframes, scheduling indication information of scheduled carriers with the second carrier accumulation numbers of 4 and 8 is lost on the subframe 2, and similarly, scheduling indication information of scheduled carriers with the second carrier accumulation numbers of 9 and 11 is lost on the subframe 3. The HARQ feedback information of the scheduled carriers with the second carrier accumulation number of 3, 4, 8, 9, and 11 is NACK, and the scheduling indication information of the scheduled carrier with the second carrier accumulation number of 6 is successfully received, but the NACK is also fed back if the downlink data reception fails. Optionally, the HARQ feedback information may be arranged in the order of the HARQ feedback information of each scheduled carrier for each downlink subframe, and then arranged in the order of the HARQ feedback information of each downlink subframe, that is, the HARQ feedback information of the scheduled carrier is arranged in the order of the second carrier cumulative number cycle. Thus, the 11-bit HARQ feedback information may be 11001010010.

Optionally, in this embodiment of the present invention, the scheduling cumulative number is a second carrier cumulative number on the multiple downlink subframes, and the scheduling total number is a third carrier total number on a first subframe set in the multiple downlink subframes, where the first subframe set includes a current downlink subframe and a downlink subframe before the current downlink subframe, an order and a number of the scheduled carriers are determined by the second carrier cumulative number on the multiple downlink subframes and a third carrier total number on the first subframe set in the multiple downlink subframes, and a bit number of the HARQ feedback information is the number of the scheduled carriers.

Specifically, the scheduling cumulative number is a second carrier cumulative number on the plurality of downlink subframes, and the scheduling total number is a third carrier total number on the first subframe set in the plurality of downlink subframes, for example, if the plurality of downlink subframes is 3 downlink subframes (including subframe 1, subframe 2, and subframe 3), the third carrier total number on the subframe 1 is the number of scheduled carriers on the subframe 1; the total number of the third carriers on the subframe 2 is the sum of the number of the scheduled carriers on the subframe 1 and the number of the scheduled carriers on the subframe 2, and if the number of the scheduled carriers on the subframe 1 is 3 and the number of the scheduled carriers on the subframe 2 is 5, the cumulative number of the third carriers on the subframe 2 is 8; similarly, if the number of scheduled carriers on subframe 3 is 3, the total number of third carriers on subframe 3 is the sum of the numbers of scheduled carriers on subframe 1, subframe 2, and subframe 3, i.e., the total number of third carriers on subframe 3 is 11. The cumulative number of the second carriers on the downlink subframes is defined as in the above embodiment, and is not described herein again. The UE may determine the sequence and the number of scheduled carriers according to the cumulative number of the second carriers on the multiple downlink subframes and the total number of the third carriers on the first subframe set in the multiple downlink subframes, and further determine that the number of the scheduled carriers is the bit number of the HARQ feedback information.

For example, fig. 5 is a TDD M — 3 scenario, in fig. 5, the scheduling accumulation number is a second accumulation number of carriers over 3 downlink subframes, the scheduling total number is a third total number of carriers over a first subframe set in the 3 downlink subframes (the 3 downlink subframes include subframe 1, subframe 2, and subframe 3), and the number of available carriers configured on each downlink subframe is 10. In the whole feedback window M, the scheduling cumulative number and the scheduling total number included in the scheduling indication information received by the UE include: 1/3, 2/3, 5/8, 6/8, 7/8, 10/11. As can be known from parameter definition, carriers corresponding to scheduling indication information with the same total number of third carriers should be located on the same downlink subframe, and it can be determined from the above parameters that the scheduling indication information of the carrier with the cumulative number of second carriers of 3 on subframe 1 fails to be received, and since the cumulative number of second carriers on subframe 2 is accumulated on the basis of subframe 1, the cumulative number of second carriers on subframe 2 is accumulated from 4, so that it can be determined that the scheduling indication information of the carriers with the cumulative number of second carriers of 4 and 8 on subframe 2 fails to be received, and according to the total number of third carriers of the carriers on subframe 2 of 8, it can be known that the number of scheduled carriers on subframe 2 is 5; similarly, it may be determined that the scheduling indication information of the carriers with the second carrier cumulative number of 9 and 11 on the subframe 3 fails to be received, the number of the scheduled carriers on the subframe 3 is 3, and it may be determined that the bit number of the HARQ feedback information is 11 bits according to the number of the scheduled carriers on the 3 downlink subframes, NACK is fed back on the carrier with the missing scheduling indication information, and NACK is also fed back when downlink data on the carrier with the second carrier cumulative number of 6 is not correctly received. Optionally, the HARQ feedback information may be arranged in the order of the HARQ feedback information of each scheduled carrier for each downlink subframe, and then arranged in the order of the HARQ feedback information of each downlink subframe, that is, the HARQ feedback information of the scheduled carrier is arranged in the order of the second carrier cumulative number cycle. Then, the 11-bit HARQ feedback information may be 11001010010.

Optionally, in this embodiment of the present invention, if all the scheduling indication information of the scheduled carrier on a certain subframe of the multiple subframes is received unsuccessfully, the HARQ feedback information on that subframe is filled according to the number of configured carriers on that subframe.

Optionally, in this embodiment of the present invention, the scheduling cumulative number is a first carrier cumulative number on each of a plurality of downlink subframes, the scheduling total number is a first carrier total number on each of the plurality of downlink subframes, an order and a number of the scheduled carriers are determined by the first carrier cumulative number on each of the plurality of downlink subframes and the first carrier total number on each of the plurality of downlink subframes, and a bit number of the HARQ feedback information is the number of the scheduled carriers.

Specifically, the scheduling cumulative number is a first carrier cumulative number on each downlink subframe in the multiple downlink subframes, the scheduling total number is a first carrier total number on each downlink subframe in the multiple downlink subframes, and the first carrier cumulative number and the first carrier total number on each downlink subframe in the multiple downlink subframes are the same as in the foregoing embodiment, and are not described here again. The UE may determine, according to the first carrier cumulative number and the first carrier total number on each downlink subframe in the multiple downlink subframes, the order and the number of the scheduled carriers on the multiple downlink subframes, and further determine that the number of the scheduled carriers is the bit number of the HARQ feedback information. For example, if the plurality of downlink subframes are 3 downlink subframes (including subframe 1, subframe 2, and subframe 3), the total number of first carriers on the subframe 1 is the number of scheduled carriers on the subframe 1; the total number of the first carriers on the subframe 2 is the number of the scheduled carriers on the subframe 2, and the total number of the first carriers on the subframe 3 is the number of the scheduled carriers on the subframe 3. If the number of scheduled carriers on subframe 1 is 3, the number of scheduled carriers on subframe 2 is 5, and the number of scheduled carriers on subframe 3 is 3, then the number of scheduled carriers on the 3 downlink subframes is 11, so that the bit number of HARQ feedback information can be determined to be 11 bits.

In the following, an embodiment of the present invention is described in detail with reference to fig. 6, where fig. 6 is a scenario where TDD M is 3, and in fig. 6, the scheduling cumulative number is a first carrier cumulative number on each downlink subframe in 3 downlink subframes, the scheduling total number is a first carrier total number on each downlink subframe in the 3 downlink subframes (the 3 downlink subframes include subframe 1, subframe 2, and subframe 3), and the number of available carriers configured on each downlink subframe is 10. In the whole feedback window M, the scheduling cumulative number and the scheduling total number included in the scheduling indication information received by the UE include: 1/3, 2/3, 2/5, 3/5, 4/5, 2/3. The carriers corresponding to the scheduling indication information with the same total number of the first carriers should be located on the same downlink subframe, and it can be known from the above parameters that the reception of the scheduling indication information of the carrier with the cumulative number of the first carriers being 3 on the subframe 1 fails, and the total number of the first carriers on the subframe 1 is 3, that is, the number of the scheduled carriers on the subframe 1 is 3; since the first carrier accumulation number on the subframe 2 is accumulated from 1, the scheduling indication information reception fails for the carriers whose first carrier accumulation number on the subframe 2 is 1 and 5, and from the total number of the first carriers on the subframe 2 being 5, it can be known that the number of scheduled carriers on the subframe 2 is 5; similarly, it may be determined that the scheduling indication information of the carriers whose first carrier accumulation number is 1 and 3 in subframe 3 fails to be received, and the number of scheduled carriers in subframe 3 is 3. Then, the sum of the number of scheduled carriers on the 3 downlink subframes is 11, so that it can be determined that the bit number of HARQ feedback information is 11 bits, NACK is fed back on a carrier missing scheduling indication information, and NACK is also fed back when downlink data on a carrier of which the first carrier cumulative number is 3 is not correctly received on subframe 2. The HARQ feedback information may be arranged in the order of the HARQ feedback information of each scheduled carrier for each downlink subframe, and then arranged in the order of the HARQ feedback information on each downlink subframe, so that the 11-bit HARQ feedback information may be 11001010010.

Optionally, the scheduling indication information may further include a total number of first scheduled carriers on the plurality of downlink subframes, where the total number of first scheduled carriers indicates a total number of times that carriers are scheduled on the plurality of downlink subframes, that is, the total number of first scheduled carriers is equal to a sum of total numbers of first carriers on each downlink subframe. Optionally, the first total number of scheduling carriers on the plurality of Downlink subframes may be carried in uplink Assignment information UL Assignment including DCI format 0/4 in DCI format, for example, the effect of the first total number of scheduling carriers on the plurality of Downlink subframes may be illustrated in any one of fig. 4 to 6 by using a Downlink Assignment Index (DAI) field in the current UL Assignment, for example, in fig. 4, if the scheduling indication information of all scheduled carriers on subframe 3 fails to be received, if there is no first total number of scheduling carriers on the plurality of Downlink subframes, the UE may consider that there is no scheduled carrier on subframe 3, and if there is such a parameter, the UE may compare the first total number of scheduling carriers on the plurality of Downlink subframes with the first total number of scheduling carriers on

subframes

1 and 2, if the previous parameter is greater than the sum of the latter two parameters, it indicates that there is a scheduled carrier in subframe 3, and this difference is the first total number of carriers in subframe 3. For example, according to the total number of the first scheduling carriers on the plurality of downlink subframes being 11, the total number of the first carriers on the subframe 1 being 3, and the total number of the first carriers on the subframe 2 being 5, the total number of the first carriers on the subframe 3 may be determined to be 3. Then the sum of the number of carriers scheduled on the 3 downlink subframes becomes 11, and then the corresponding number of bits of HARQ feedback information becomes 11 bits instead of 8 bits. Therefore, the total number of the first scheduled carriers on the downlink subframes can be used to check the number of the scheduled carriers on the downlink subframes, so that the UE can know the number of the actually scheduled carriers on the downlink subframes.

Therefore, the method for transmitting feedback information according to the embodiment of the present invention can determine the number of carriers scheduled by the access device for the user equipment according to the scheduling cumulative number and the scheduling total number included in the scheduling indication information, and then determine the bit number of the HARQ feedback information according to the number of the scheduled carriers, so that the HARQ feedback information of carriers that are not scheduled does not need to be filled, thereby improving the performance of transmitting the HARQ feedback information.

In this embodiment of the present invention, the scheduling cumulative number is a first codeword cumulative number on one downlink subframe, the scheduling total number is a first codeword total number on the one downlink subframe, the order and number of scheduled codewords are determined by the first codeword cumulative number on the one downlink subframe and the first codeword total number on the one downlink subframe, and the HARQ feedback information is the number of scheduled codewords.

Specifically, the scheduling cumulative number is a first codeword cumulative number on one downlink subframe, and the scheduling total number is a first codeword total number on the one downlink subframe, optionally, the first codeword cumulative number on the one downlink subframe and the first codeword total number on the one downlink subframe may be carried in the downlink assignment information. The UE may determine the number of scheduled codewords according to the cumulative number of the first codewords on the downlink subframe and the total number of the first codewords on the downlink subframe, and further determine the bit number of the HARQ feedback information according to the number of the scheduled codewords.

It should be understood that the first accumulated number of codewords on the one downlink subframe is a cyclic accumulated count value, for example, if the first accumulated number of codewords occupies 4 bits, the first accumulated number of codewords may be cyclically accumulated from 1 to 16 in the order of the scheduled codewords on the downlink subframe, and the total number of the first codewords on the one downlink subframe is the number of the scheduled codewords on the downlink subframe.

For example, fig. 7 is an FDD scenario or a TDD M ═ 1 scenario, in fig. 7, the scheduling cumulative number included in the scheduling indication information received by the UE is a first codeword cumulative number on a downlink subframe, and the scheduling total number is a first codeword total number on the downlink subframe, as shown in fig. 7, the UE receives the scheduling indication information sent by the access device, and the scheduling cumulative number and the scheduling total number included in the scheduling indication information acquired by the UE include: 1/10, 3/10, 6/10, 8/10, it can be known from the above parameters that the total number of the first codewords in the downlink subframe is 10, that is, the number of the scheduled codewords in the downlink subframe is 10. The UE may determine, from the received downlink control information sent by the access device, that the carrier to which the scheduled codeword with the first codeword cumulative number of 3 belongs schedules two codewords, and because the scheduling indication information of the two scheduled codewords belonging to the same carrier is either successfully received at the same time or fails to be received at the same time, the scheduling indication information of the scheduled codeword with the first codeword cumulative number of 2 is also successfully received. Similarly, it can be known that the carrier to which the scheduled code word with the first code word cumulative number of 8 belongs also schedules two code words, that is, the scheduling indication information of the code word with the first code word cumulative number of 7 is also received successfully. According to the continuity of the first accumulated number of code words, it can be judged that the scheduling indication information of the scheduled code words of which the first accumulated number of code words is 4, 5, 9 and 10 is lost. For the scheduled code word with failed receiving of the scheduling indication information, the HARQ feedback information is NACK, the HARQ feedback information of other scheduled code words determines to be feedback ACK or NACK according to whether the data is correctly received on the scheduled code word, and if the data is correctly received, the ACK is fed back; otherwise, NACK is fed back. For example, the scheduling indication information of the codewords with the first accumulated number of codewords of 4, 5, 9 and 10 fails to be received, and NACK is fed back; the scheduling indication information of the code words with the first code word cumulant of 1, 3, 6, 7 and 8 is successfully received, the downlink data is correctly received, and ACK is fed back; and feeding back NACK if the downlink data of the code word with the first code word cumulative number of 2 is not received correctly. Alternatively, the HARQ feedback information may be sequentially arranged according to the frequency domain order of the scheduled codewords. For example, the HARQ feedback information of the scheduled codewords may be sequentially arranged in the order of the cyclic accumulation of the first codeword accumulation number. Then, the HARQ feedback information for the 10 scheduled codewords may be 1010011100.

Optionally, in this embodiment of the present invention, the scheduling cumulative number is a second codeword cumulative number on multiple downlink subframes, the scheduling total number is a second codeword total number on the multiple downlink subframes, the order and number of the scheduled codewords are determined by the second codeword cumulative number on the multiple downlink subframes and the second codeword total number on the multiple downlink subframes, and the bit number of the HARQ feedback information is the number of the scheduled codewords.

For example, in the case that TDD M >1, the scheduling cumulative number may be a second cumulative number of codewords over a plurality of downlink subframes, and the scheduling total number may be a second total number of codewords over the plurality of downlink subframes, and optionally, the second cumulative number of codewords over the plurality of downlink subframes and the second total number of codewords over the plurality of downlink subframes may be carried in the downlink assignment information. The UE may determine the number of the scheduled codewords according to the cumulative number of the second codewords on the plurality of downlink subframes and the total number of the second codewords on the plurality of downlink subframes, and further determine that the number of the scheduled codewords is the bit number of the HARQ feedback information.

It should be understood that the second codeword cumulative number and the second carrier cumulative number over the plurality of downlink subframes are similar in meaning and are also a cyclic cumulative count value, except that the second carrier cumulative number is accumulated in units of scheduled carriers and the second codeword cumulative number is accumulated in units of scheduled codewords. The total number of the second codewords on the downlink subframes is the total number of times that the scheduled codewords on the downlink subframes are scheduled, and may also be understood as the sum of the number of the scheduled codewords on each downlink subframe in the downlink subframes, and the scheduled codewords are counted in the total number of the second codewords after being scheduled once in the downlink subframes, and are counted in the total number of the second codewords after being scheduled three times on 3 downlink subframes.

It should also be understood that, when the feedback window M is 1, that is, when one uplink subframe corresponds to one downlink subframe, the number of the scheduled codewords is the number of the scheduled codewords on the downlink subframe, and may also be the number of the scheduled codewords, and the two values are equal; when the feedback window M >1, that is, when one uplink subframe corresponds to multiple downlink subframes, the number of the scheduled codewords is the total number of times that the codewords are scheduled on the multiple downlink subframes, that is, one scheduled codeword is scheduled 3 times on the multiple downlink subframes, and the number of the scheduled codewords is counted according to 3.

For example, fig. 8 is a TDD M — 3 scenario, in fig. 8, the scheduling accumulation number included in the scheduling indication information received by the UE is a second codeword accumulation number on 3 downlink subframes, the scheduling total number is a second codeword total number on the multiple downlink subframes (the 3 downlink subframes include subframe 1, subframe 2, and subframe 3), and the scheduling accumulation number and the scheduling total number included in the scheduling indication information received by the UE include, within the entire feedback window M: 2/19, 4/19, 10/19, 11/19, 12/19, 17/19. From the above parameters, it can be known that the total number of the second code words is 19, that is, the number of the scheduled code words on the 3 downlink subframes is 19, and then the number of bits of the HARQ feedback information is also 19. The UE may determine, from the received downlink control information sent by the access device, that two codewords are scheduled by carriers to which scheduled codewords whose first codeword cumulative numbers are 2, 4, 10, and 17 belong, and because the scheduling indication information of two scheduled codewords belonging to the same carrier is either successfully received at the same time or fails to be received at the same time, because the scheduling indication information of scheduled codewords whose first codeword cumulative numbers are 2, 4, 10, and 17 is successfully received, the scheduling indication information of scheduled codewords whose first codeword cumulative numbers are 1, 3, 9, and 16 is also successfully received. From the continuity of the second codeword accumulation number, it can be known that the scheduling indication information of the scheduled codewords having the second codeword accumulation number of 5, 6, 7, 8, 13, 14, 15, 18, and 19 fails to be received and NACK is fed back, and the scheduling indication information of the scheduled codewords having the second codeword accumulation number of 11 succeeds to be received but downlink data fails to be received and NACK is also fed back. Optionally, in the embodiment of the present invention, the HARQ feedback information may be that each downlink subframe is arranged according to the sequence of the HARQ feedback information of each scheduled carrier first, and then arranged according to the sequence of the HARQ feedback information on each downlink subframe, that is, the HARQ feedback information of the scheduled codeword is arranged sequentially according to the sequence of the second codeword accumulation cycle accumulation. Then, the 19-bit HARQ feedback information may be 1111000001110001100.

Optionally, in this embodiment of the present invention, the scheduling cumulative number is a second codeword cumulative number on multiple downlink subframes, the scheduling total number is a first codeword total number on each downlink subframe in the multiple downlink subframes, the order and number of the scheduled codewords are determined by the second codeword cumulative number on the multiple downlink subframes and the first codeword total number on each downlink subframe in the multiple downlink subframes, and the bit number of the HARQ feedback information is the number of the scheduled codewords.

Specifically, the scheduling cumulative number may be a second cumulative number of codewords on a plurality of downlink subframes, and the scheduling total number may be a first total number of codewords on each of the plurality of downlink subframes, and optionally, the second cumulative number of codewords on the plurality of downlink subframes and the first total number of codewords on each of the plurality of downlink subframes may be carried in the downlink assignment information. The UE may determine the number of scheduled codewords according to the cumulative number of second codewords on the plurality of downlink subframes and the total number of first codewords on each downlink subframe in the plurality of downlink subframes, and further determine that the number of scheduled codewords is the bit number of the HARQ feedback information.

It should be understood that the cumulative number of the second codewords on the multiple downlink subframes is a cyclic cumulative count value, and as defined in the above embodiments, it is not repeated here, and the total number of the first codewords on each downlink subframe in the multiple downlink subframes is the number of the scheduled codewords on each downlink subframe in the multiple downlink subframes. For example, if there are 6 scheduled codewords on a first downlink subframe in the plurality of downlink subframes, the first codeword total number of the scheduled codewords on the first downlink subframe is 6, and if there are 3 scheduled codewords on a second downlink subframe in the plurality of downlink subframes, the first codeword total number of the scheduled codewords on the second downlink subframe is 3. That is, the first total number of codewords on each of the plurality of downlink subframes is for each downlink subframe.

For example, fig. 9 is a TDD M — 3 scenario, in fig. 9, the scheduling cumulative number is a second cumulative number of codewords over 3 downlink subframes, and the scheduling total number is a first total number of codewords over each downlink subframe in the 3 downlink subframes (the 3 downlink subframes include subframe 1, subframe 2, and subframe 3). In the whole feedback window M, the scheduling cumulative number and the scheduling total number included in the scheduling indication information received by the UE include: 2/6, 4/6, 10/8, 11/8, 12/8, 17/5. As can be seen from the above parameters, the total number of the first code words on the subframe 1 is 6, that is, the number of the scheduled code words on the subframe 1 is 6; the total number of the first code words on the subframe 2 is 8, that is, the number of the scheduled code words on the subframe 2 is 8; the total number of the first code words on the subframe 3 is 5, that is, the number of the code words scheduled on the subframe 3 is 5, then the sum of the number of the code words scheduled on the 3 downlink subframes is 19, and thus the bit number of the HARQ feedback information is also 19 bits. The UE may determine, from the received downlink control information sent by the access device, that two codewords are scheduled by carriers to which scheduled codewords whose first codeword cumulative numbers are 2, 4, 10, and 17 belong, and because the scheduling indication information of two scheduled codewords belonging to the same carrier is either successfully received at the same time or fails to be received at the same time, because the scheduling indication information of scheduled codewords whose first codeword cumulative numbers are 2, 4, 10, and 17 is successfully received, the scheduling indication information of scheduled codewords whose first codeword cumulative numbers are 1, 3, 9, and 16 is also successfully received. In combination with the above derivation, it is possible to know the scheduling indication information of the scheduled codewords with the missing second codeword accumulation numbers of 5 and 6 in subframe 1, and since the second codeword accumulation numbers maintain continuity over the entire 3 subframes, the scheduling indication information of the scheduled codewords with the missing second codeword accumulation numbers of 7, 8, 13 and 14 in subframe 2, and similarly, the scheduling indication information of the scheduled codewords with the missing second codeword accumulation numbers of 15, 18 and 19 in subframe 3. The HARQ feedback information of the codeword scheduled by the lost scheduling indication information is NACK, and the scheduling indication information of the scheduled codeword with the second codeword cumulative number of 11 is successfully received, but NACK is also fed back if downlink data reception fails. Optionally, the HARQ feedback information may be arranged in the order of the HARQ feedback information of each scheduled carrier for each downlink subframe, and then arranged in the order of the HARQ feedback information of each downlink subframe, that is, the HARQ feedback information of the scheduled codeword is arranged in the order of the second codeword accumulation cycle. Thus, the 19-bit HARQ feedback information may be 1111000001110001100.

Optionally, in this embodiment of the present invention, the scheduling cumulative number is a second cumulative number of codewords on the multiple downlink subframes, and the scheduling total number is a third total number of codewords on a first subframe set in the multiple downlink subframes, where the first subframe set includes a current downlink subframe and a downlink subframe before the current downlink subframe, an order and number of the scheduled codewords are determined by the second cumulative number of codewords on the multiple downlink subframes and the third total number of codewords on the first subframe set in the multiple downlink subframes, and the bit number of the HARQ feedback information is the number of the scheduled codewords.

Specifically, the scheduling cumulative number is a second cumulative number of codewords on the plurality of downlink subframes, and the scheduling total number is a third total number of codewords on the first subframe set in the plurality of downlink subframes, for example, if the plurality of downlink subframes is 3 downlink subframes (including subframe 1, subframe 2, and subframe 3), the third total number of codewords on the subframe 1 is the number of scheduled codewords on the subframe 1; the total number of the third code words on the subframe 2 is the sum of the number of the scheduled code words on the subframe 1 and the number of the scheduled code words on the subframe 2, and if the number of the scheduled code words on the subframe 1 is 3 and the number of the scheduled code words on the subframe 2 is 5, the cumulative number of the third code words on the subframe 2 is 8; similarly, the number of the scheduled codewords on the subframe 3 is 3, and the total number of the third codewords on the subframe 3 is the sum of the numbers of the scheduled codewords on the subframe 1, the subframe 2 and the subframe 3, that is, the total number of the third codewords on the subframe 3 is 11. The cumulative number of the second codeword on the downlink subframes is a cyclic cumulative count value, and is not described herein again, as defined in the above embodiments. The UE may determine the number of scheduled codewords according to the cumulative number of third codewords and the total number of third codewords in the first subframe set in the plurality of downlink subframes, and further determine that the number of scheduled codewords is the bit number of the HARQ feedback information.

For example, fig. 10 is a TDD M — 3 scenario, in fig. 10, the scheduling accumulation number is a second accumulation number of code words over 3 downlink subframes, and the scheduling total number is a third total number of code words over a first subframe set of the 3 downlink subframes (the 3 downlink subframes include subframe 1, subframe 2, and subframe 3). In the whole feedback window M, the scheduling cumulative number and the scheduling total number included in the scheduling indication information received by the UE include: 2/6, 4/6, 10/14, 11/14, 12/14, 17/19. As can be known from the definition of the parameters, the codewords corresponding to the scheduling indication information with the same total number of the third codewords should be located on the same downlink subframe. The UE may determine, from the received downlink control information sent by the access device, that two codewords are scheduled by carriers to which scheduled codewords whose first codeword cumulative numbers are 2, 4, 10, and 17 belong, and because the scheduling indication information of two scheduled codewords belonging to the same carrier is either successfully received at the same time or fails to be received at the same time, because the scheduling indication information of scheduled codewords whose first codeword cumulative numbers are 2, 4, 10, and 17 is successfully received, the scheduling indication information of scheduled codewords whose first codeword cumulative numbers are 1, 3, 9, and 16 is also successfully received. As can be seen from the above parameters, since the number of scheduled codewords on the subframe 1 is 6, the scheduling indication information reception of codewords with the second codeword accumulation number of 5 and 6 on the subframe 1 fails, since the second codeword accumulation number on the subframe 2 is accumulated on the basis of the subframe 1, the second codeword accumulation number on the subframe 2 is accumulated from 7, and then the scheduling indication information reception of codewords with the second codeword accumulation number of 7, 8, 13 and 14 on the subframe 2 fails, and from the third codeword total number of codewords on the subframe 2 of 14, the number of scheduled codewords on the subframe 2 can be known to be 8; similarly, it may be determined that the number of the scheduled codewords on the subframe 3 is 5, the scheduling indication information reception of the codewords of which the cumulative number of the second codewords is 15, 18, and 19 on the subframe 3 fails, it may be determined that the bit number of the HARQ feedback information is 19 bits according to that the sum of the number of the scheduled codewords on the 3 downlink subframes is 19, NACK is fed back on the codeword which loses the scheduling indication information, and NACK is also fed back when the downlink data on the codeword of which the cumulative number of the second codewords is 6 is not correctly received. Optionally, the HARQ feedback information may be arranged in the order of the HARQ feedback information of each scheduled carrier for each downlink subframe, and then arranged in the order of the HARQ feedback information of each downlink subframe, that is, the HARQ feedback information of the scheduled codeword is arranged in the order of the second codeword accumulation cycle. The 19-bit HARQ feedback information may be 1111000001110001100.

Optionally, in this embodiment of the present invention, the scheduling cumulative number is a first codeword cumulative number on each downlink subframe in a plurality of downlink subframes, the scheduling total number is a first codeword total number on each downlink subframe in the plurality of downlink subframes, an order and a number of the scheduled codewords are determined by the first codeword cumulative number on each downlink subframe in the plurality of downlink subframes and the first codeword total number on each downlink subframe in the plurality of downlink subframes, and a bit number of the HARQ feedback information is the number of the scheduled codewords.

Specifically, the scheduling cumulative number is a first codeword cumulative number on each downlink subframe in a plurality of downlink subframes, the scheduling total number is a first codeword total number on each downlink subframe in the plurality of downlink subframes, and the UE may determine, according to the first codeword cumulative number and the first codeword total number on each downlink subframe in the plurality of downlink subframes, a sequence and a number of scheduled codewords on the plurality of downlink subframes, and further determine that the number of the scheduled codewords is a bit number of the HARQ feedback information. For example, if the plurality of downlink subframes are 3 downlink subframes (including subframe 1, subframe 2, and subframe 3), the total number of the first codewords on the subframe 1 is the number of scheduled codewords on the subframe 1; the total number of the first code words on the subframe 2 is the number of the scheduled code words on the subframe 2, and the total number of the first code words on the subframe 3 is the number of the scheduled code words on the subframe 3. If the number of the scheduled code words on the subframe 1 is 3, the number of the scheduled code words on the subframe 2 is 5, and the number of the scheduled code words on the subframe 3 is 3, then the number of the scheduled code words on the 3 downlink subframes is 11, so that the bit number of the HARQ feedback information can be determined to be 11 bits.

Referring to fig. 11, a detailed description is given below to an embodiment of the present invention, where fig. 11 is a scenario where TDD M is 3, and in fig. 11, the scheduling cumulative number is a first codeword cumulative number on each downlink subframe in 3 downlink subframes, and the scheduling total number is a first codeword total number on each downlink subframe in the 3 downlink subframes (the 3 downlink subframes include subframe 1, subframe 2, and subframe 3). In the whole feedback window M, the scheduling cumulative number and the scheduling total number included in the scheduling indication information received by the UE include: 2/6, 4/6, 4/8, 5/8, 6/8, 3/5. The codewords corresponding to the scheduling indication information with the same first codeword total number should be located on the same downlink subframe, and it can be known from the above parameters that the first codeword total number on subframe 1 is 6, that is, the number of scheduled codewords on subframe 1 is 6; the total number of the first code words on the subframe 2 is 8, that is, the number of the scheduled code words on the subframe 2 is 8; the total number of the first code words on the subframe 3 is 5, that is, the number of the code words scheduled on the subframe 3 is 5, then the sum of the number of the code words scheduled on the 3 downlink subframes is 19, and thus the bit number of the HARQ feedback information is also 19 bits. The UE may determine, from received downlink control information sent by the access device, that two codewords are scheduled by carriers to which scheduled codewords whose first codeword cumulative numbers are 2 and 4 belong on a subframe 1, where because scheduling indication information of two scheduled codewords belonging to the same carrier is either successfully or unsuccessfully received at the same time, because the scheduling indication information of scheduled codewords whose first codeword cumulative numbers are 2 and 4 is successfully received, the scheduling indication information of scheduled codewords whose first codeword cumulative numbers are 1 and 3 is also successfully received; similarly, two codewords are scheduled on the carrier to which the scheduled codeword with the first codeword cumulant of 4 belongs on the subframe 2, so the scheduling indication information of the scheduled codeword with the first codeword cumulant of 3 on the subframe 2 is also successfully received; similarly, two codewords are scheduled on the carrier to which the scheduled codeword with the first codeword cumulative number of 3 on the subframe 3 belongs, so the scheduling indication information of the scheduled codeword with the first codeword cumulative number of 2 on the subframe 3 is also successfully received. As can be seen from the above derivation, the scheduling indication information reception of the codewords with the first codeword accumulation numbers of 5 and 6 on the subframe 1 fails; since the first accumulated number of codewords over the subframe 2 is accumulated from 1, the scheduling indication information reception of codewords whose first accumulated number of codewords is 1, 2, 7, and 8 over the subframe 2 fails; similarly, it may be determined that the scheduling indication information reception of the codewords whose first codeword accumulation number is 1,4, and 5 over the subframe 3 fails. And feeding back NACK on the code word losing the scheduling indication information, and feeding back NACK when the downlink data on the code word with the first code word cumulant of 5 on the subframe 2 is not correctly received. Optionally, the HARQ feedback information may be arranged in the order of the HARQ feedback information of each scheduled carrier for each downlink subframe, and then arranged in the order of the HARQ feedback information on each downlink subframe, so that the 19-bit HARQ feedback information may be 1111000001110001100.

Optionally, the scheduling indication information may further include a first total number of scheduling codewords on the plurality of downlink subframes, where the first total number of scheduling codewords indicates a total number of times that codewords are scheduled on the plurality of downlink subframes, that is, the first total number of scheduling codewords is equal to a sum of first total numbers of codewords on each downlink subframe. Optionally, the first total number of scheduling codewords on the plurality of downlink subframes may be carried in uplink Assignment information UL Assignment, which includes DCI format 0/4 in DCI format, for example, the first total number of scheduling codewords on the plurality of downlink subframes may be carried by using DAI field in current UL Assignment, and the effect of the first total number of scheduling codewords on the plurality of downlink subframes may be illustrated with any one of fig. 9 to 11, for example, in fig. 9, if the scheduling indication information of all scheduled codewords on subframe 3 fails to be received, if there is no first total number of scheduling codewords on the plurality of downlink subframes, the UE may consider that there is no scheduled codeword on subframe 3, and if there is this parameter, the UE may compare the first total number of scheduling codewords on the plurality of downlink subframes with the first total number of scheduling codewords on subframe 1 and subframe 2, if the former parameter is greater than the sum of the latter two parameters, it indicates that there is a scheduled codeword in subframe 3, and this difference is the first total number of codewords in subframe 3. For example, based on the total number of first scheduling codewords on the plurality of downlink subframes being 19, the total number of first codewords on subframe 1 being 6, and the total number of first codewords on subframe 2 being 8, the total number of first codewords on subframe 3 can be determined to be 5. Then the sum of the number of codewords scheduled on the 3 downlink subframes becomes 19, and the corresponding number of HARQ feedback information bits becomes 19 bits instead of 14 bits. Therefore, the total number of the first scheduling code words on the downlink subframes can be used for checking the number of the code words scheduled on the downlink subframes, so that the UE can know the number of the actual scheduled code words on the downlink subframes.

Optionally, in the embodiment of the present invention, the scheduling indication information further includes home carrier indication information, where the home carrier indication information indicates carrier information to which the scheduled codeword belongs, and if two scheduled codewords correspond to the same carrier and their home carrier indication information is the same, the spatial bundling processing may be performed on HARQ feedback information of the two scheduled codewords, otherwise, HARQ feedback information of the two scheduled codewords is fed back respectively. Alternatively, a new domain may be added to the downlink assignment information to carry the parameter, or an existing domain in the downlink assignment information may be utilized to carry the parameter. The invention is not limited in this regard.

Therefore, the method for transmitting feedback information according to the embodiment of the present invention can determine the number of the scheduled codewords according to the scheduling cumulative number and the scheduling total number included in the scheduling indication information, and then determine the bit number of the HARQ feedback information according to the number of the scheduled codewords, so that HARQ feedback information without scheduled codewords does not need to be generated, thereby improving the performance of transmitting the HARQ feedback information.

It should be understood that, in the embodiment of the present invention, the scheduling cumulative number and the scheduling total number may be carried in downlink assignment information, for example, the scheduling cumulative number and the scheduling total number may be carried in a downlink assignment information newly added domain, or one parameter of the scheduling cumulative number and the scheduling total number may be carried by using a DAI domain of TDD in the existing downlink assignment information, and another parameter is carried in the newly added domain. The invention is not limited in this regard. In addition, when the scheduling indication information includes the total number of the first scheduling carriers on the plurality of downlink subframes, the total number of the first scheduling carriers on the plurality of downlink subframes may be carried in the uplink assignment information, optionally, the total number of the first scheduling carriers may be carried in an uplink assignment information newly added domain, or the total number of the first scheduling carriers may be carried by using a DAI domain in the existing TDD uplink assignment information. The size of the newly added domain is determined by the scheduling accumulation number, the total scheduling number and the total first scheduling carrier number, and the optimization condition of the continuous error probability condition to the bit number is considered. Similarly, the same is true for the total number of the first scheduling codewords on the downlink subframes, which is not described herein again. For example, if the scheduling accumulation number is 32 at maximum, it is fully considered that a field of 5 bits needs to be added to carry the scheduling accumulation number. Preferably, considering that there is a low probability that 4 consecutive carriers or codewords are dropped, a 2-bit field may be used to carry the scheduling accumulation number, and the original scheduling accumulation value X may be replaced with a 2-bit value of Y ═ mod (X-1,4) +1, where mod (X-1,4) denotes modulo X-1 to 4, i.e. the scheduling accumulation number may be counted from 1 to 4 cycles; by analogy, considering that the probability that consecutive 8 carriers or codewords are dropped is low, a 3-bit field may also be used to carry the scheduling accumulation number, that is, the original scheduling accumulation value X may replace the value of X with a 3-bit value of Y ═ mod (X-1,8) +1, that is, the scheduling accumulation number may be counted from 1 to 8 cycles.

For example, in fig. 12, the scheduling total is simplified to a remainder obtained by dividing an original scheduling total by 4, the scheduling accumulation is simplified to a cycle accumulation count from 1 to 4, and the scheduling accumulation and the scheduling total included in the scheduling indication information acquired by the UE include: 1/2, 2/2, 4/2, 1/2, the UE may conclude that the first total number of carriers is 6 according to the scheduling indication information that 4 scheduled carriers are actually received and the first total number of carriers is 2. The first carrier accumulation number is counted from 1 to 4 in a circulating accumulation mode, and according to the continuity of the first carrier accumulation number, the scheduling indication information of the scheduled carrier with the first carrier accumulation number of 3 can be judged to be lost, and all the UE judges that the scheduling indication information of the last scheduled carrier is not received after 5 scheduled carriers are added to the lost scheduled carrier, so that the scheduling indication information of the scheduled carrier with the last first carrier accumulation number of 2 is lost. The UE then feeds back a NACK to the scheduled carrier that lost the scheduling indication information. The HARQ feedback information of other scheduled carriers determines to feed back ACK or NACK according to whether data is received on the scheduled carrier. According to the information, the HARQ feedback information of the scheduled carrier on the downlink subframe can be determined.

It should also be understood that, in the embodiment of the present invention, only M is 3 as an example for description, but the present invention is not limited thereto, and M may also be another value, for example, M is 2 or M is 4, and when M is another value, the method for determining the number of scheduled carriers or scheduled codewords according to the scheduling indication information is similar, and is not described herein again.

Therefore, the method for transmitting feedback information according to the embodiment of the present invention can determine the number of scheduled carriers or scheduled codewords according to the scheduling cumulative number and the scheduling total number included in the scheduling indication information, and then determine the bit number of the HARQ feedback information according to the number of the scheduled carriers or the scheduled codewords, so that HARQ feedback information without scheduled carriers or scheduled codewords is not generated, and thus, the performance of transmitting the HARQ feedback information is improved.

The method for transmitting feedback information according to the embodiment of the present invention is described above with reference to fig. 1 to 12 from the perspective of a UE, and is described below from the perspective of an access device.

Fig. 13 shows a schematic flow diagram of a method 3000 of transmitting feedback information according to an embodiment of the invention, the method 3000 may be performed by an access device, the method 3000 includes:

s3100, an access device sends scheduling indication information to a user equipment UE, wherein the scheduling indication information comprises scheduling cumulant and scheduling total, and the scheduling cumulant and the scheduling total are used for determining the number of carriers or scheduled code words scheduled for the user equipment by the access device;

s3200, the access device receives HARQ feedback information sent by the UE, wherein a bit number of the HARQ feedback information is determined by the number of the scheduled carrier or the scheduled codeword.

Specifically, the access device sends scheduling indication information to the user equipment, where the scheduling indication information includes a scheduling cumulative number and a scheduling total number, and the scheduling cumulative number and the scheduling total number are used to determine the number of carriers or scheduled codewords scheduled by the access device for the user equipment; optionally, the access device may send downlink assignment information to the UE, where the downlink assignment information carries the scheduling cumulative number and the scheduling total number, so that the UE determines, according to the scheduling cumulative number and the scheduling total number, the number of carriers or scheduled codewords that the access device schedules for the UE, and then determines, according to the number of the scheduled carriers or the scheduled codewords, the number of bits of the HARQ feedback information. The access device receives HARQ feedback information sent by the user equipment, and the bit number of the HARQ feedback information is determined by the number of the scheduled carrier or the scheduled code word.

Therefore, the method for transmitting feedback information according to the embodiment of the present invention can determine the number of scheduled carriers or scheduled codewords according to the scheduling cumulative number and the scheduling total number included in the scheduling indication information by sending the scheduling indication information to the user equipment, and then determine the bit number of the HARQ feedback information according to the number of the scheduled carriers or the scheduled codewords, so that the HARQ feedback information of carriers that are not scheduled or the scheduled codewords does not need to be filled, thereby improving the performance of transmitting the HARQ feedback information.

Optionally, in this embodiment of the present invention, the access device may bear the scheduling cumulative number and the scheduling total number by a method of adding a new domain in downlink Assignment information (UL Assignment), or may bear the scheduling indication information by using an existing domain in the downlink Assignment information, and the access device may also bear the scheduling indication information by using other downlink control information, which is not limited in this invention. For example, if the scheduling indication information included in the downlink assignment information is the first carrier cumulative number and the first carrier total number on one downlink subframe, the first carrier cumulative number and the first carrier total number on the one downlink subframe may be carried in a manner of adding two fields to the downlink assignment information, or the existing fields are multiplexed to carry the first carrier cumulative number and the first carrier total number on the one downlink subframe, which is not limited in the embodiment of the present invention.

Optionally, in this embodiment of the present invention, the scheduling cumulative number is a first carrier cumulative number on one downlink subframe, and the scheduling total number is a first carrier total number on the one downlink subframe; or,

the scheduling cumulative number is a second carrier cumulative number on a plurality of downlink subframes, and the scheduling total number is a second carrier total number on the plurality of downlink subframes; or,

the scheduling cumulative number is a second carrier cumulative number on a plurality of downlink subframes, and the scheduling total number is a first carrier total number on each downlink subframe in the plurality of downlink subframes; or,

Specifically, when the scheduling cumulative number is the first carrier cumulative number on one downlink subframe, and the scheduling total number is the first carrier total number on the one downlink subframe, the number of the scheduled carriers is determined by the first carrier cumulative number on the one downlink subframe and the first carrier total number on the one downlink subframe, and the bit number of the HARQ feedback information is determined by the number of the scheduled carriers, that is, each bit of HARQ feedback information represents HARQ feedback information of one scheduled carrier, and the access device may determine which scheduled carriers have failed to receive data according to the content of the HARQ feedback information, so as to determine to retransmit data on the carriers. For example, if the access device receives HARQ feedback information 100110 when M is 1, since it is known which carriers are scheduled by the access device, the sequence of HARQ feedback information of each scheduled carrier is pre-configured by the access device and the UE. For example, the HARQ feedback information 100110 is arranged in order according to the frequency domain order of the scheduled carriers, so the access device can infer that the downlink data reception of the 2 nd, 3 rd and 6 th scheduled carriers is abnormal and needs to be retransmitted in order according to the frequency domain order on the downlink subframe according to the HARQ feedback information 100110.

Similarly, when the feedback window M >1, the scheduling cumulative number may be a second carrier cumulative number over a plurality of downlink subframes, and the scheduling total number may be a second carrier total number over the plurality of downlink subframes; or,

the scheduling cumulative number may be a second carrier cumulative number on a plurality of downlink subframes, and the scheduling total number may be a first carrier total number on each downlink subframe in the plurality of downlink subframes; or,

the scheduling cumulative number may be a third carrier cumulative number on a first subframe set of the plurality of downlink subframes, and the scheduling total number may be a third carrier total number on the first subframe set of the plurality of downlink subframes, where the first subframe set includes a current downlink subframe and a downlink subframe before the current downlink subframe; or,

the scheduling cumulative number may be a first carrier cumulative number on each of a plurality of downlink subframes, and the scheduling total number may be a first carrier total number on each of the plurality of downlink subframes.

The HARQ feedback information received by the access device is HARQ feedback information of a scheduled carrier on each downlink subframe in the plurality of downlink subframes, and optionally, the HARQ feedback information is arranged in sequence according to the scheduled carrier on each downlink subframe and then according to the HARQ feedback information on each downlink subframe in the plurality of downlink subframes. For example, when M is 3, if the HARQ feedback information received by the access device is 11001010010, the HARQ feedback information is HARQ feedback information of scheduled carriers of 3 downlink subframes, and the access device knows that there are 3 scheduled carriers on subframe 1, so that the first 3 bits in the HARQ feedback information can be determined as HARQ feedback information of 3 scheduled carriers on subframe 1, and similarly, the access device knows that there are 5 scheduled carriers on subframe 2, can determine HARQ feedback information of 5 scheduled carriers on subframe 2 on the immediately following 5 bits, and the last 3 bits are HARQ feedback information of 3 scheduled carriers on subframe 3, so that the access device can determine which HARQ feedback information on scheduled carriers is NACK, and thus can determine that downlink data on the scheduled carriers needs to be retransmitted.

In this embodiment of the present invention, the scheduling indication information further includes a total number of first scheduling carriers on the multiple downlink subframes, and optionally, the total number of first scheduling carriers may be carried in Uplink Assignment information (UP Assignment) information or other downlink control information, which is not limited in this embodiment of the present invention.

Optionally, the scheduling cumulative number is a first codeword cumulative number on the one downlink subframe, and the scheduling total number is a first codeword total number on the one downlink subframe; or,

the scheduling cumulative number is a second codeword cumulative number on a plurality of downlink subframes, and the scheduling total number is a second codeword total number on the plurality of downlink subframes; or,

the scheduling cumulative number is a second codeword cumulative number on a plurality of downlink subframes, and the scheduling total number is a first codeword total number on each downlink subframe in the plurality of downlink subframes; or,

Specifically, when the scheduling cumulative number is the first codeword cumulative number on one downlink subframe, and the scheduling total number is the first codeword total number on the one downlink subframe, the number of the scheduled codewords is determined by the first codeword cumulative number on the one downlink subframe and the first codeword total number on the one downlink subframe, and the bit number of the HARQ feedback information is determined by the number of the scheduled codewords, that is, each bit of HARQ feedback information represents HARQ feedback information of one scheduled codeword, and the access device may determine, according to the content of the HARQ feedback information, which scheduled codewords have failed to receive data, so as to determine to retransmit data on the codewords. For example, if the access device receives HARQ feedback information 1010011100, when M is equal to 1, since which codewords are known to the access device and scheduled by the access device, the HARQ feedback information of each scheduled codeword is arranged in the order agreed by the access device and the UE, for example, the HARQ feedback information 1010011100 is arranged in the order of the frequency domain of the scheduled codewords, so the access device can infer that the downlink data of the 2 nd, 3 rd, 4 th, 8 th, and 9 th scheduled codewords is received abnormally and needs to be retransmitted in the order of the frequency domain on the downlink subframe according to the HARQ feedback information 1010011100.

Likewise, when the feedback window M >1, the scheduling cumulative number may be a second cumulative number of codewords over a plurality of downlink subframes, and the scheduling total may be a second total number of codewords over the plurality of downlink subframes; or,

the scheduling cumulative number may be a second codeword cumulative number on a plurality of downlink subframes, and the scheduling total number may be a first codeword total number on each downlink subframe in the plurality of downlink subframes; or,

the scheduling cumulative number may be a third cumulative number of codewords in a first subframe set of the plurality of downlink subframes, and the scheduling total number may be a third total number of codewords in the first subframe set of the plurality of downlink subframes, where the first subframe set includes a current downlink subframe and a downlink subframe before the current downlink subframe; or,

the scheduling cumulative number may be a first codeword cumulative number on each of a plurality of downlink subframes, and the scheduling total may be a first codeword total number on each of the plurality of downlink subframes.

The HARQ feedback information received by the access device is HARQ feedback information of a scheduled codeword on each of the plurality of downlink subframes, and optionally, the HARQ feedback information is arranged according to the sequence of the scheduled codeword on each downlink subframe and then according to the sequence of the HARQ feedback information on each of the plurality of downlink subframes. For example, when M is 3, if the HARQ feedback information received by the access device is 1111000001110001100, the HARQ feedback information is HARQ feedback information of a scheduled codeword of 3 downlink subframes, and the access device knows that there are 6 scheduled codewords on subframe 1, so that the HARQ feedback information of which the first 6 bits are 6 scheduled codewords on subframe 1 can be determined, and similarly, the access device knows that there are 8 scheduled codewords on subframe 2, can determine HARQ feedback information of which the immediately following 8 bits are 8 scheduled codewords on subframe 2, and the last 5 bits are HARQ feedback information of which the last 5 bits are 5 scheduled codewords on subframe 3, so that the access device can determine which HARQ feedback information on the scheduled codewords is NACK, and thus can determine that downlink data on the scheduled carrier needs to be retransmitted.

Therefore, the method for transmitting feedback information according to the embodiment of the present invention can determine the number of scheduled carriers or scheduled codewords according to the scheduling cumulative number and the scheduling total number included in the scheduling indication information by sending the scheduling indication information to the user equipment, so as to determine the bit number of the HARQ feedback information according to the number of the scheduled carriers or the scheduled codewords, thereby not filling HARQ feedback information of non-scheduled carriers or non-scheduled codewords, and thus improving the performance of transmitting the HARQ feedback information.

The method for transmitting feedback information according to the embodiment of the present invention is described above with reference to fig. 1 to 13, and the apparatus for transmitting HARQ feedback information according to the embodiment of the present invention is described below with reference to fig. 14 to 17.

Fig. 14 shows a schematic block diagram of a user equipment 500 according to an embodiment of the present invention, as shown in fig. 14, the user equipment 500 comprising:

a receiving module 510, configured to receive scheduling indication information sent by an access device, where the scheduling indication information includes a scheduling cumulative number and a scheduling total number, and the scheduling cumulative number and the scheduling total number are used to determine the number of carriers or scheduled codewords that the access device schedules for the user equipment;

a sending module 520, configured to send HARQ feedback information to the access device, where the HARQ feedback information is used to indicate whether data is correctly received on the scheduled carrier or the scheduled codeword, and a bit number of the HARQ feedback information is determined by the number of the scheduled carriers or the scheduled codewords.

In this embodiment of the present invention, the receiving module 510 receives scheduling indication information sent by an access device, where the scheduling indication information includes a scheduling cumulative number and a scheduling total number, and the scheduling cumulative number and the scheduling total number are used to determine the number of carriers or scheduled code words scheduled by the access device for the user equipment; alternatively, the receiving module 510 may receive downlink assignment information sent by the access device, where the downlink assignment information includes the scheduling accumulation number and the scheduling total number, and the scheduling accumulation number and the scheduling total number are used to determine the number of scheduled carriers or scheduled codewords, so as to determine the number of bits of HARQ feedback information, so that HARQ feedback information of those carriers or scheduled codewords that are not scheduled is not filled in the HARQ feedback information, and then the sending module 520 sends the HARQ feedback information determined according to the number of scheduled carriers or scheduled codewords to the access device.

Therefore, the user equipment of the embodiment of the present invention can determine the number of carriers scheduled by the access equipment for the user equipment or the number of codewords scheduled according to the scheduling cumulative number and the scheduling total number included in the scheduling indication information, and then determine the bit number of the HARQ feedback information according to the number of the carriers scheduled or the codewords scheduled, so that the HARQ feedback information of carriers not scheduled or codewords not scheduled does not need to be filled, thereby improving the performance of transmitting the HARQ feedback information.

Specifically, the scheduling cumulative number included in the scheduling indication information received by the receiving module 510 may be a first carrier cumulative number on one downlink subframe, and the scheduling total number included in the scheduling indication information received by the receiving module 510 may be a first carrier total number on the one downlink subframe, and optionally, the first carrier cumulative number on the one downlink subframe and the first carrier total number on the one downlink subframe may be carried in the downlink assignment information. The bit number of the HARQ feedback information sent by the sending module 520 is the number of scheduled carriers determined according to the cumulative number of the first carriers on the one downlink subframe and the total number of the first carriers on the one downlink subframe.

Specifically, the scheduling cumulative number included in the scheduling indication information received by the receiving module 510 may be a second cumulative number of carriers over a plurality of downlink subframes, and the scheduling total number included in the scheduling indication information received by the receiving module 510 may be a second total number of carriers over the plurality of downlink subframes, and optionally, the second cumulative number of carriers over the plurality of downlink subframes and the second total number of carriers over the plurality of downlink subframes may be carried in the downlink assignment information. The bit number of the HARQ feedback information sent by the sending module 520 is the number of scheduled carriers determined according to the cumulative number of the second carriers on the multiple downlink subframes and the total number of the second carriers on the multiple downlink subframes.

Specifically, the scheduling cumulative number included in the scheduling indication information received by the receiving module 510 may be a second cumulative number of carriers on a plurality of downlink subframes, and the scheduling total number included in the scheduling indication information received by the receiving module 510 may be a first total number of carriers on each of the plurality of downlink subframes, and optionally, the second cumulative number of carriers on the plurality of downlink subframes and the first total number of carriers on each of the plurality of downlink subframes may be carried in the downlink assignment information. The bit number of the HARQ feedback information sent by the sending module 520 is the number of scheduled carriers determined according to the cumulative number of the second carriers on the multiple downlink subframes and the total number of the first carriers on each downlink subframe in the multiple downlink subframes.

Specifically, the scheduling cumulative number included in the scheduling indication information received by the receiving module 510 may be a second carrier cumulative number on the multiple downlink subframes, the scheduling total number included in the scheduling indication information received by the receiving module 510 may be a third carrier total number on the first subframe set in the multiple downlink subframes, and the bit number of the HARQ feedback information sent by the sending module 520 is a number of scheduled carriers determined according to the second carrier cumulative number on the multiple downlink subframes and the third carrier total number on the first subframe set in the multiple downlink subframes.

Specifically, the scheduling cumulative number included in the scheduling indication information received by the receiving module 510 is a first carrier cumulative number on each of a plurality of downlink subframes, the scheduling total number included in the scheduling indication information received by the receiving module 510 is a first carrier total number on each of the plurality of downlink subframes, and the bit number of the HARQ feedback information sent by the sending module 520 is a number of scheduled carriers on the plurality of downlink subframes determined according to the first carrier cumulative number and the first carrier total number on each of the plurality of downlink subframes.

Optionally, the scheduling indication information may further include a total number of first scheduling carriers over the plurality of downlink subframes, where the total number of first scheduling carriers is used to determine the number of scheduled carriers. The first total number of scheduled carriers indicates a total number of times that carriers are scheduled on the plurality of downlink subframes, i.e., the first total number of scheduled carriers is equal to a sum of the first total number of carriers on each downlink subframe. Optionally, the total number of the first scheduling carriers on the plurality of downlink subframes may be carried in the uplink Assignment information UL Assignment.

Optionally, in the embodiment of the present invention, if two codewords are scheduled for one scheduled carrier on the multiple downlink subframes, Spatial Bundling (Spatial Bundling) is performed on HARQ feedback information of the two codewords corresponding to the scheduled carrier.

Therefore, the user equipment of the embodiment of the present invention can determine the number of carriers scheduled by the access equipment for the user equipment according to the scheduling accumulation number and the scheduling total number included in the scheduling indication information, and then determine the bit number of the HARQ feedback information according to the number of the scheduled carriers, so that the HARQ feedback information of carriers that are not scheduled does not need to be filled, thereby improving the performance of transmitting the HARQ feedback information.

Specifically, the scheduling cumulative number included in the scheduling indication information received by the receiving module 510 is a first codeword cumulative number on one downlink subframe, and the scheduling total number included in the scheduling indication information received by the receiving module 510 is a first codeword total number on the one downlink subframe, optionally, the first codeword cumulative number on the one downlink subframe and the first codeword total number on the one downlink subframe may be carried in the downlink assignment information. The bit number of the HARQ feedback information sent by the sending module 520 is the number of scheduled codewords determined according to the cumulative number of the first codewords on the one downlink subframe and the total number of the first codewords on the one downlink subframe.

Specifically, the scheduling cumulative number included in the scheduling indication information received by the receiving module 510 may be a second cumulative number of code words on a plurality of downlink subframes, and the scheduling total number included in the scheduling indication information received by the receiving module 510 may be a second total number of code words on the plurality of downlink subframes, and optionally, the second cumulative number of code words on the plurality of downlink subframes and the second total number of code words on the plurality of downlink subframes may be carried in the downlink assignment information. The bit number of the HARQ feedback information sent by the sending module 520 is the number of scheduled codewords determined according to the cumulative number of the second codewords on the plurality of downlink subframes and the total number of the second codewords on the plurality of downlink subframes.

Specifically, the scheduling cumulative number included in the scheduling indication information received by the receiving module 510 may be a second cumulative number of codewords on a plurality of downlink subframes, and the scheduling total number included in the scheduling indication information received by the receiving module 510 may be a first total number of codewords on each of the plurality of downlink subframes, and optionally, the second cumulative number of codewords on the plurality of downlink subframes and the first total number of codewords on each of the plurality of downlink subframes may be carried in the downlink assignment information. The bit number of the HARQ feedback information sent by the sending module 520 is the number of scheduled codewords determined according to the cumulative number of the second codewords on the plurality of downlink subframes and the total number of the first codewords on each downlink subframe in the plurality of downlink subframes.

Specifically, the scheduling cumulative number included in the scheduling indication information received by the receiving module 510 may be a second cumulative number of codewords on the plurality of downlink subframes, the scheduling total number included in the scheduling indication information received by the receiving module 510 may be a third total number of codewords on the first subframe set in the plurality of downlink subframes, and the bit number of the HARQ feedback information sent by the sending module 520 is a number of scheduled codewords determined according to the second cumulative number of codewords on the plurality of downlink subframes and the third total number of codewords on the first subframe set in the plurality of downlink subframes.

Specifically, the scheduling cumulative number included in the scheduling indication information received by the receiving module 510 is a first codeword cumulative number on each of a plurality of downlink subframes, the scheduling total number included in the scheduling indication information received by the receiving module 510 is a first codeword total number on each of the plurality of downlink subframes, and the bit number of the HARQ feedback information sent by the sending module 520 is a number of scheduled codewords on the plurality of downlink subframes determined according to the first codeword cumulative number and the first codeword total number on each of the plurality of downlink subframes.

Therefore, the user equipment of the embodiment of the present invention can determine the number of the codewords scheduled by the access equipment for the user equipment according to the scheduling cumulative number and the scheduling total number included in the scheduling indication information, and determine the bit number of the HARQ feedback information according to the number of the scheduled codewords, so that the HARQ feedback information of the codewords which are not scheduled does not need to be filled, thereby improving the performance of transmitting the HARQ feedback information.

The UE 500 according to the embodiment of the present invention may correspond to the UE in the method 1000 for transmitting feedback information according to the embodiment of the present invention, and the above and other operations and/or functions of each module in the UE 500 are respectively for implementing corresponding processes of each aforementioned method, and are not described herein again for brevity.

Fig. 15 shows a schematic block diagram of an access device 600 according to an embodiment of the present invention, and as shown in fig. 15, the access device 600 includes:

a sending module 610, configured to send scheduling indication information to a user equipment UE, where the scheduling indication information includes a scheduling cumulative number and a scheduling total number, and the scheduling cumulative number and the scheduling total number are used to determine the number of carriers or scheduled codewords that are scheduled by the access device for the user equipment;

a receiving module 620, configured to receive HARQ feedback information sent by the UE, where a bit number of the HARQ feedback information is determined by the number of the scheduled carriers or the scheduled codewords.

Specifically, the sending module 610 sends scheduling indication information to the ue, where the scheduling indication information includes a scheduling cumulative number and a scheduling total number, and the scheduling indication information is used to determine the number of scheduled carriers or scheduled codewords; optionally, the sending module 610 may send downlink assignment information to the UE, where the scheduling cumulative number and the scheduling total number are carried in the downlink assignment information, so that the UE determines the number of scheduled carriers or scheduled codewords according to the scheduling cumulative number and the scheduling total number, then determines the bit number of the HARQ feedback information according to the number of the scheduled carriers or the scheduled codewords, and then the receiving module 620 receives the HARQ feedback information sent by the UE, where the bit number of the HARQ feedback information is determined by the number of the scheduled carriers or the scheduled codewords.

Therefore, the access device of the embodiment of the present invention can determine the number of scheduled carriers or scheduled codewords according to the scheduling cumulative number and the scheduling total number included in the scheduling indication information by sending the scheduling indication information to the user equipment, and then determine the bit number of the HARQ feedback information according to the number of the scheduled carriers or the scheduled codewords, so that the HARQ feedback information of the non-scheduled carriers or the non-scheduled codewords does not need to be filled, and thus, the performance of transmitting the HARQ feedback information is improved.

Therefore, the access device of the embodiment of the present invention can determine the number of scheduled carriers according to the scheduling cumulative number and the scheduling total number included in the scheduling indication information by sending the scheduling indication information to the user equipment, and then determine the bit number of the HARQ feedback information according to the number of the scheduled carriers, so that the HARQ feedback information of carriers that are not scheduled does not need to be filled, thereby improving the performance of transmitting the HARQ feedback information.

The scheduling cumulative number is a second codeword cumulative number on a plurality of downlink subframes, and the scheduling total number is a first codeword total number on each downlink subframe in the plurality of downlink subframes.

Specifically, when the feedback window M is 1, the number of the scheduled codewords is determined by the cumulative number of the first codewords on the one downlink subframe and the total number of the first codewords on the one downlink subframe, and the bit number of the HARQ feedback information is determined by the number of the scheduled codewords, that is, each bit represents HARQ feedback information of one scheduled codeword, and the access device may determine which scheduled codewords have failed to receive data according to the content of the HARQ feedback information, so as to determine to retransmit data on the codewords.

Similarly, when the feedback window M >1, the HARQ feedback information received by the access device is HARQ feedback information of a scheduled codeword on each downlink subframe in the multiple downlink subframes, and optionally, the HARQ feedback information is sequentially ordered according to the order of the scheduled codeword and then the order of the multiple downlink subframes. The access device may determine that the HARQ feedback information is a scheduled codeword of NACK, thereby determining that downlink data on the scheduled codeword needs to be retransmitted.

Therefore, the access device of the embodiment of the present invention can determine the number of the scheduled codewords according to the scheduling cumulative number and the scheduling total number included in the scheduling indication information by sending the scheduling indication information to the user equipment, and then determine the bit number of the HARQ feedback information according to the number of the scheduled codewords, so that the HARQ feedback information of the non-scheduled codewords does not need to be filled, thereby improving the performance of transmitting the HARQ feedback information.

The access device 600 according to the embodiment of the present invention may correspond to the access device in the method 3000 for transmitting feedback information according to the embodiment of the present invention, and the above and other operations and/or functions of each module in the access device 600 are respectively for implementing corresponding processes of each aforementioned method, and are not described herein again for brevity.

As shown in fig. 16, an embodiment of the present invention further provides a user equipment 800, where the user equipment 800 includes a processor 810, a memory 820, a bus system 830, and a transceiver 840. The processor 810, the memory 820 and the transceiver 840 are connected via the bus system 830, the memory 820 is used for storing instructions, and the processor 810 is used for executing the instructions stored in the memory 820 to control the transceiver 840 to receive signals or transmit signals. The transceiver 840 is configured to receive scheduling indication information sent by an access device, where the scheduling indication information includes a scheduling cumulative number and a scheduling total number, and the scheduling cumulative number and the scheduling total number are used to determine the number of carriers or scheduled code words scheduled by the access device for the user equipment; the transceiver 840 is further configured to send HARQ feedback information to the access device, where the HARQ feedback information is used to indicate whether data is correctly received on the scheduled carrier or the scheduled codeword, and a bit number of the HARQ feedback information is determined by the number of the scheduled carriers or the scheduled codewords.

It should be understood that, in the embodiment of the present invention, the processor 810 may be a Central Processing Unit (CPU), and the processor 810 may also be other general-purpose 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.

The memory 820 may include both read-only memory and random access memory, and provides instructions and data to the processor 810. A portion of the memory 820 may also include non-volatile random access memory. For example, memory 820 may also store device type information.

The bus system 830 may include a power bus, a control bus, a status signal bus, and the like, in addition to a data bus. For clarity of illustration, however, the various buses are designated in the figure as the bus system 830.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 810. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 820, and the processor 810 reads the information in the memory 820 and combines the hardware to complete the steps of the above method. To avoid repetition, it is not described in detail here.

Optionally, in this embodiment of the present invention, the scheduling cumulative number is a first carrier cumulative number on one downlink subframe, the scheduling total number is a first carrier total number on the one downlink subframe, the sequence and the number of the scheduled carriers are determined by the first carrier cumulative number on the one downlink subframe and the first carrier total number on the one downlink subframe, and the bit number of the HARQ feedback information is the number of the scheduled carriers; or,

the scheduling cumulative number is a second carrier cumulative number on a plurality of downlink subframes, the scheduling total number is a second carrier total number on the plurality of downlink subframes, the sequence and the number of the scheduled carriers are determined by the second carrier cumulative number on the plurality of downlink subframes and the second carrier total number on the plurality of downlink subframes, and the bit number of the HARQ feedback information is determined by the number of the scheduled carriers; or,

the scheduling cumulative number is a second carrier cumulative number on a plurality of downlink subframes, the scheduling total number is a first carrier total number on each downlink subframe in the plurality of downlink subframes, the sequence and the number of the scheduled carriers are determined by the second carrier cumulative number on the plurality of downlink subframes and the first carrier total number on each downlink subframe in the plurality of downlink subframes, and the bit number of the HARQ feedback information is determined by the number of the scheduled carriers; or,

the scheduling cumulative number is a second carrier cumulative number on the plurality of downlink subframes, and the scheduling total number is a third carrier total number on a first subframe set in the plurality of downlink subframes, wherein the first subframe set comprises a current downlink subframe and a downlink subframe before the current downlink subframe, the sequence and the number of the scheduled carriers are determined by the second carrier cumulative number on the plurality of downlink subframes and a third carrier total number on the first subframe set in the plurality of downlink subframes, and the bit number of the HARQ feedback information is determined by the number of the scheduled carriers; or,

the scheduling cumulative number is a first carrier cumulative number on each downlink subframe in a plurality of downlink subframes, the scheduling total number is a first carrier total number on each downlink subframe in the plurality of downlink subframes, the sequence and the number of the scheduled carriers are determined by the first carrier cumulative number on each downlink subframe in the plurality of downlink subframes and the first carrier total number on each downlink subframe in the plurality of downlink subframes, and the bit number of the HARQ feedback information is determined by the number of the scheduled carriers.

Optionally, the scheduling indication information further includes a total number of first scheduled carriers on the multiple downlink subframes, an order and a number of the scheduled carriers are determined by the scheduling cumulative number, the scheduling total number, and the total number of the first carriers on the multiple downlink subframes, and a bit number of the HARQ feedback information is determined by the number of the scheduled carriers.

Optionally, in this embodiment of the present invention, the transceiver 840 is specifically configured to:

and sending the HARQ feedback information to the access equipment, wherein the HARQ feedback information is arranged according to the sequence of the HARQ feedback information of each scheduled carrier on each downlink subframe, and then is arranged according to the sequence of the HARQ feedback information on each downlink subframe.

Therefore, the user equipment of the embodiment of the present invention can determine the number of carriers scheduled by the access equipment for the user equipment according to the scheduling cumulative number and the scheduling total number included in the scheduling indication information, and then determine the bit number of the HARQ feedback information according to the number of the scheduled carriers, so that the HARQ feedback information of the carriers that are not scheduled does not need to be filled, thereby improving the performance of transmitting the HARQ feedback information.

Optionally, in this embodiment of the present invention, the scheduling cumulative number is a first codeword cumulative number on one downlink subframe, the scheduling total number is a first codeword total number on the one downlink subframe, the order and number of the scheduled codewords are determined by the first codeword cumulative number on the one downlink subframe and the first codeword total number on the one downlink subframe, and the bit number of the HARQ feedback information is determined by the number of the scheduled codewords; or,

the scheduling cumulative number is a second codeword cumulative number on a plurality of downlink subframes, the scheduling total number is a second codeword total number on the plurality of downlink subframes, the order and number of the scheduled codewords are determined by the second codeword cumulative number on the plurality of downlink subframes and the second codeword total number on the plurality of downlink subframes, and the bit number of the HARQ feedback information is determined by the number of the scheduled codewords; or,

the scheduling cumulative number is a second codeword cumulative number on a plurality of downlink subframes, the scheduling total number is a first codeword total number on each downlink subframe in the plurality of downlink subframes, the sequence and number of the scheduled codewords are determined by the second codeword cumulative number on the plurality of downlink subframes and the first codeword total number on each downlink subframe in the plurality of downlink subframes, and the bit number of the HARQ feedback information is determined by the number of the scheduled codewords; or,

the scheduling cumulative number is a third codeword cumulative number on a first subframe set in the plurality of downlink subframes, and the scheduling total number is a third codeword total number on the first subframe set in the plurality of downlink subframes, wherein the first subframe set includes a current downlink subframe and a downlink subframe before the current downlink subframe, the order and number of the scheduled codewords are determined by the third codeword cumulative number on the first subframe set in the plurality of downlink subframes and the third codeword total number on the first subframe set in the plurality of downlink subframes, and the bit number of the HARQ feedback information is determined by the number of the scheduled codewords; or,

the scheduling cumulative number is a first codeword cumulative number on each downlink subframe in a plurality of downlink subframes, the scheduling total number is a first codeword total number on each downlink subframe in the plurality of downlink subframes, the sequence and number of the scheduled codewords are determined by the first codeword cumulative number on each downlink subframe in the plurality of downlink subframes and the first codeword total number on each downlink subframe in the plurality of downlink subframes, and the bit number of the HARQ feedback information is determined by the number of the scheduled codewords.

Therefore, the user equipment of the embodiment of the invention can determine the number of the code words scheduled by the access equipment for the user equipment according to the scheduling indication information, and then determine the bit number of the HARQ feedback information according to the number of the scheduled code words, so that the HARQ feedback information of the code words which are not scheduled does not need to be filled, and the performance of transmitting the HARQ feedback information is improved.

As shown in fig. 17, an embodiment of the present invention further provides an access device 900, where the access device 900 includes a processor 910, a memory 920, a bus system 930, and a transceiver 940. The processor 910, the memory 920 and the transceiver 940 are connected via a bus system 930, the memory 920 is used for storing instructions, and the processor 910 is used for executing the instructions stored in the memory 920 to control the transceiver 940 to receive signals or transmit signals. The transceiver 940 is configured to send scheduling indication information to the UE, where the scheduling indication information includes a scheduling cumulative number and a scheduling total number, and the scheduling cumulative number and the scheduling total number are used to determine the number of carriers or scheduled codewords that are scheduled by the access device for the UE; the transceiver 940 is further configured to receive HARQ feedback information sent by the UE, where a bit number of the HARQ feedback information is determined by the number of the scheduled carriers or the scheduled codewords.

Therefore, the access device of the embodiment of the present invention can determine the number of scheduled carriers or scheduled codewords according to the scheduling cumulative number and the scheduling total number included in the scheduling indication information by sending the scheduling indication information to the user equipment, and then determine the bit number of the HARQ feedback information according to the number of the scheduled carriers or the scheduled codewords, so that the HARQ feedback information of the carriers that are not scheduled or the scheduled codewords is not filled, and thus the performance of transmitting the HARQ feedback information is improved.

It should be understood that, in the embodiment of the present invention, the processor 910 may be a Central Processing Unit (CPU), and the processor 910 may also be other general-purpose 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, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 920 may include a read-only memory and a random access memory, and provides instructions and data to the processor 910. A portion of the memory 920 may also include non-volatile random access memory. For example, the memory 920 may also store device type information.

The bus system 930 may include a power bus, a control bus, a status signal bus, and the like, in addition to a data bus. For clarity of illustration, however, the various buses are designated in the figure as the bus system 930.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 910. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 920, and the processor 910 reads the information in the memory 920 and performs the steps of the above method in combination with the hardware thereof. To avoid repetition, it is not described in detail here.

the scheduling cumulative number is a second codeword cumulative number on a plurality of downlink subframes, and the scheduling total number is a first codeword total number on each downlink subframe in the plurality of downlink subframes; or

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.

It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. 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 invention.

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 be in an electrical, mechanical or other form.

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 embodiment.

In addition, functional units in the embodiments of the present invention 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 functions, if implemented in the form of software functional units 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 invention may be embodied in the form of 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 invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A method for transmitting feedback information, comprising:

the method comprises the steps that user equipment receives scheduling indication information sent by access equipment, wherein the scheduling indication information comprises scheduling cumulant and scheduling total, and the scheduling cumulant and the scheduling total are used for determining the number of carriers scheduled for the user equipment by the access equipment;

the user equipment sends HARQ feedback information to the access equipment, wherein the HARQ feedback information is used for indicating whether data is correctly received on the scheduled carriers, the bit number of the HARQ feedback information is determined by the number of the scheduled carriers, and the feedback bit number corresponding to each carrier in the scheduled carriers in the HARQ feedback information is the same under the condition that different numbers of code words transmitted on different carriers exist in the scheduled carriers.

2. The method according to claim 1, wherein different carriers existing in the scheduled carriers are a first carrier for transmitting 1 codeword and a second carrier for transmitting 2 codewords, wherein the number of feedback bits corresponding to 1 codeword transmitted on the first carrier is 1 bit, and the number of feedback bits corresponding to 2 codewords transmitted on the second carrier after spatial bundling is 1 bit.

3. The method according to claim 1, wherein different carriers exist in the scheduled carriers, and are a first carrier for transmitting 1 codeword and a second carrier for transmitting 2 codewords, wherein the number of feedback bits corresponding to 2 codewords transmitted on the second carrier is 2 bits, and the number of feedback bits corresponding to 1 codeword transmitted on the first carrier is 2 bits.

4. The method according to any of claims 1-3, wherein the bit sequence of the HARQ feedback information is that in each downlink subframe, the HARQ feedback information is arranged according to the sequence of each scheduled carrier first and then according to the sequence of each downlink subframe.

5. The method of claim 4, wherein the arranging in each scheduled carrier order in each downlink subframe comprises: and arranging feedback bits corresponding to each scheduled carrier in each downlink subframe according to the sequence number of each scheduled carrier.

6. A method for transmitting feedback information, comprising:

the access equipment sends scheduling indication information to User Equipment (UE), wherein the scheduling indication information comprises scheduling cumulant and scheduling total, and the scheduling cumulant and the scheduling total are used for determining the number of carriers scheduled for the user equipment by the access equipment;

the access equipment receives HARQ feedback information sent by the UE, the bit number of the HARQ feedback information is determined by the number of the scheduled carriers, and the feedback bit number corresponding to each carrier in the scheduled carriers in the HARQ feedback information is the same under the condition that different numbers of code words transmitted on different carriers exist in the scheduled carriers.

7. The method according to claim 6, wherein different carriers existing in the scheduled carriers are a first carrier for transmitting 1 codeword and a second carrier for transmitting 2 codewords, wherein the number of feedback bits corresponding to 1 codeword transmitted on the first carrier is 1 bit, and the number of feedback bits corresponding to 2 codewords transmitted on the second carrier after spatial bundling is 1 bit.

8. The method according to claim 6, wherein different carriers exist in the scheduled carriers, and are a first carrier for transmitting 1 codeword and a second carrier for transmitting 2 codewords, wherein the number of feedback bits corresponding to the 2 codewords transmitted on the second carrier is 2 bits, and the number of feedback bits corresponding to the 1 codeword transmitted on the first carrier is padded to 2 bits.

9. The method according to any of claims 6-8, wherein the bit sequence of the HARQ feedback information is that in each downlink subframe, the HARQ feedback information is arranged according to the carrier sequence of each scheduling first, and then arranged according to the sequence of each downlink subframe.

10. The method of claim 9, wherein the arranging in each scheduled carrier order in each downlink subframe comprises: and arranging feedback bits corresponding to each scheduled carrier in each downlink subframe according to the sequence number of each scheduled carrier.

11. An apparatus for transmitting feedback information, comprising:

a unit configured to receive scheduling indication information sent by an access device, where the scheduling indication information includes a scheduling cumulative number and a scheduling total number, and the scheduling cumulative number and the scheduling total number are used to determine the number of carriers scheduled by the access device for the apparatus;

a unit configured to send HARQ feedback information to the access device, where the HARQ feedback information is used to indicate whether data is correctly received on the scheduled carriers, where a bit number of the HARQ feedback information is determined by the number of the scheduled carriers, and when there are different numbers of codewords transmitted on different carriers in the scheduled carriers, feedback bit numbers corresponding to each carrier in the scheduled carriers in the HARQ feedback information are the same.

12. The apparatus according to claim 11, wherein different carriers existing in the scheduled carriers are a first carrier for transmitting 1 codeword and a second carrier for transmitting 2 codewords, where a feedback bit number corresponding to 1 codeword transmitted on the first carrier is 1 bit, and a feedback bit number corresponding to 2 codewords transmitted on the second carrier after spatial bundling is 1 bit.

13. The apparatus according to claim 11, wherein different carriers exist in the scheduled carriers, and are a first carrier for transmitting 1 codeword and a second carrier for transmitting 2 codewords, where the number of feedback bits corresponding to 2 codewords transmitted on the second carrier is 2 bits, and the number of feedback bits corresponding to 1 codeword transmitted on the first carrier is 2 bits.

14. The apparatus according to any of claims 11-13, wherein the bit sequence of the HARQ feedback information is that in each downlink subframe, the HARQ feedback information is arranged according to the carrier sequence of each scheduling first, and then arranged according to the sequence of each downlink subframe.

15. The apparatus of claim 14, wherein the downlink subframes are arranged in an order of each scheduled carrier, and wherein the downlink subframes comprise: and arranging feedback bits corresponding to each scheduled carrier in each downlink subframe according to the sequence number of each scheduled carrier.

16. An apparatus for transmitting feedback information, comprising:

a unit configured to send scheduling indication information to a user equipment UE, where the scheduling indication information includes a scheduling cumulative number and a scheduling total number, and the scheduling cumulative number and the scheduling total number are used to determine the number of carriers scheduled by the apparatus for the user equipment;

and a unit configured to receive HARQ feedback information sent by the ue, where a bit number of the HARQ feedback information is determined by the number of the scheduled carriers, where the bit number of the HARQ feedback information is determined by the number of the scheduled carriers, and when there are different numbers of codewords transmitted on different carriers in the scheduled carriers, feedback bit numbers corresponding to each carrier in the scheduled carriers in the HARQ feedback information are the same.

17. The apparatus according to claim 16, wherein different carriers existing in the scheduled carriers are a first carrier for transmitting 1 codeword and a second carrier for transmitting 2 codewords, wherein a feedback bit number corresponding to 1 codeword transmitted on the first carrier is 1 bit, and a feedback bit number corresponding to 2 codewords transmitted on the second carrier after spatial bundling is 1 bit.

18. The apparatus according to claim 16, wherein different carriers exist in the scheduled carriers, and are a first carrier for transmitting 1 codeword and a second carrier for transmitting 2 codewords, where the number of feedback bits corresponding to 2 codewords transmitted on the second carrier is 2 bits, and the number of feedback bits corresponding to 1 codeword transmitted on the first carrier is 2 bits.

19. The apparatus according to any of claims 16-18, wherein the bit sequence of the HARQ feedback information is that in each downlink subframe, the HARQ feedback information is arranged according to the carrier sequence of each scheduling first, and then arranged according to the sequence of each downlink subframe.

20. The apparatus of claim 19, wherein the downlink subframes are arranged in an order of each scheduled carrier, and wherein the downlink subframes comprise: and arranging feedback bits corresponding to each scheduled carrier in each downlink subframe according to the sequence number of each scheduled carrier.

21. A communications device comprising a processor and a memory storing a computer program, wherein the computer program is invoked by the processor to cause the communications device to perform the method of any of claims 1 to 5.

22. A communication apparatus comprising a processor and a memory storing a computer program, wherein the computer program is invoked by the processor to cause the communication apparatus to perform the method of any one of claims 6 to 10.

23. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which is invoked by a computer to cause the method according to any of claims 1-5 to be performed.

24. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which is invoked by a computer to cause the method according to any of claims 6-10 to be performed.