WO2012139465A1

WO2012139465A1 - Method and device for scheduling multi-subframe transmission

Info

Publication number: WO2012139465A1
Application number: PCT/CN2012/073154
Authority: WO
Inventors: 林亚男; 沈祖康; 肖国军
Original assignee: 电信科学技术研究院
Priority date: 2011-04-12
Filing date: 2012-03-27
Publication date: 2012-10-18
Also published as: CN102137504B; CN102137504A

Abstract

Disclosed is a method for scheduling multi-subframe transmission, for realizing the transmission of multi-subframe scheduling information, so as to schedule multiple subframes. The method includes: the network side determining Downlink Control Information (DCI) for scheduling the data transmission of N subframes, wherein the DCI includes public scheduling information and subframe scheduling information corresponding to each subframe, and N is a positive integer; and the network side sending the DCI to UE via a Physical Downlink Control Channel (PDCCH) in the downlink subframe n, with n being a positive integer; wherein for downlink scheduling, the N subframes are the downlink subframe n and the N - 1 successive downlink subframes thereafter; for uplink scheduling, the N subframes are the uplink subframe n + k and the N - 1 successive uplink subframes thereafter, with k being a preset parameter and a positive integer. Also disclosed is a device for implementing the method.

Description

Method and device for scheduling multi-subframe transmission This application claims to be Chinese patent filed on April 12, 2011, with the application number of 201110090796.0, and the invention titled "a method and device for scheduling multi-subframe transmission" Priority of the application, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD The present invention relates to the field of communications, and in particular, to a method and apparatus for scheduling multi-subframe transmission. In a current LTE (Long Term Evolution) system, for a dynamic scheduling service, a base station schedules a data transmission by transmitting a scheduling signaling (grant) in a Physical Downlink Control Channel (PDCCH) ( In addition to TDD (Time Division Duplexing) uplink and downlink configuration 0). For a UE, there can be only one DL grant (downlink scheduling signaling), or one UL grant (uplink scheduling signaling), or one DL grant and one UL grant in each downlink subframe. The DL grant in the downlink subframe is used to schedule downlink data transmission in the subframe. The UL grant in the downlink subframe is used to schedule uplink data transmission in the uplink subframe "+.

A variety of DCI (Downlink Control Information) formats are defined in the LTE system. The information contained in each DCI format is different and the length is different. For downlink scheduling, DCI formats 1, 1A, 1B, 1D, 2, 2A, 2B, and 2C can be used, as shown in Figure 1. Upstream scheduling can use DCI formats 0 and 4, as shown in Figure 2.

In the prior art, scheduling is performed in units of radio frames. In order to implement scheduling in units of subframes to improve scheduling flexibility, the requirements for scheduling signaling are improved. In order to increase the capacity to support more user scheduling, one possible method is to increase the PDCCH physical resources and separately schedule each subframe. However, the method obviously needs to occupy more resources and increase signaling overhead. Summary of the invention

The embodiments of the present invention provide a method and an apparatus for scheduling multi-subframe transmission, which are used to implement transmission of multi-subframe scheduling information, so as to schedule multiple subframes.

A method for scheduling multi-subframe transmission, applied to the network side, includes the following steps:

The network side determines downlink control signaling DCI information for scheduling N subframe data transmissions, where the DCI information includes common scheduling information and subframe scheduling information corresponding to each subframe, where N is a positive integer;

The network side sends the DCI information to the UE by using a physical downlink control channel PDCCH in the downlink subframe n, where n is a positive integer; For the downlink scheduling, the N subframes are the downlink subframe n and the subsequent consecutive N-1 downlink subframes; for the uplink scheduling, the N subframes are the uplink subframe n+k and the subsequent continuous N- 1 uplink subframe, k is a preset parameter and is a positive integer.

A method for scheduling multi-subframe transmission is applied to a terminal side, and includes the following steps:

The UE receives the DCI information sent by the network side in the downlink subframe n, and obtains the common scheduling information and the subframe scheduling information corresponding to each subframe, where n is a positive integer;

For the downlink scheduling, the UE receives the downlink data in the downlink subframe n and the subsequent N-1 downlink subframes according to the common scheduling information and the subframe scheduling information corresponding to each subframe, where N is a positive integer;

For the uplink scheduling, the UE sends the uplink data in the uplink subframe n+k and the subsequent N-1 uplink subframes according to the common scheduling information and the subframe scheduling information corresponding to each subframe.

A base station comprising:

a scheduling module, configured to determine downlink control signaling DCI information for scheduling N subframe data transmissions, where the DCI information includes common scheduling information and subframe scheduling information corresponding to each subframe, where N is a positive integer;

An interface module, configured to send the DCI information to the UE by using a physical downlink control channel PDCCH in the downlink subframe n, where n is a positive integer;

For the downlink scheduling, the N subframes are the downlink subframe n and the subsequent consecutive N-1 downlink subframes; for the uplink scheduling, the N subframes are the uplink subframe n+k and the subsequent continuous N- 1 uplink subframe, k is a preset parameter and is a positive integer.

A user equipment, including:

An interface module, configured to receive DCI information sent by the network side in the downlink subframe n, obtain common scheduling information, and corresponding subframe scheduling information of each subframe, where n is a positive integer;

For the downlink scheduling, the control module is configured to: according to the common scheduling information and the subframe scheduling information corresponding to each subframe, the control interface module receives the downlink data in the downlink subframe n and the subsequent N-1 downlink subframes, where For the uplink scheduling, the control module controls the interface module according to the common scheduling information and each subframe corresponding to the subframe scheduling information, and controls the interface module in the uplink subframe n+k and the following N-1 uplink subframes. Send upstream data.

In the embodiment of the present invention, the network side transmits scheduling information for multiple subframes by using one subframe, and the scheduling information includes common scheduling information and subframe scheduling information, and the common information of the scheduled multiple subframes is shared by the common scheduling information. The information respectively scheduled for each subframe is represented by subframe scheduling information, thereby saving signaling overhead. DRAWINGS

1 is a schematic diagram of a downlink scheduling DCI format in the prior art; 2 is a schematic diagram of an uplink scheduling DCI format in the prior art;

3 is a flowchart of a method for scheduling multi-subframe transmission on a network side according to an embodiment of the present invention;

4 is a flowchart of a method for scheduling multi-subframe transmission on a UE side according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a HARQ process when multiple subframes share the same HARQ process according to an embodiment of the present invention;

6 is a schematic diagram of a HARQ process when multiple subframes correspond to different HARQ processes according to an embodiment of the present invention;

7 is a structural diagram of a base station according to an embodiment of the present invention;

FIG. 8 is a structural diagram of a UE according to an embodiment of the present invention. detailed description

In the embodiment of the present invention, the network side transmits scheduling information for multiple subframes by using one subframe, in particular, the scheduling information includes common scheduling information and subframe scheduling information, and common scheduling information of multiple subframes is represented by common scheduling information, for each child. The information separately scheduled by the frame is represented by the subframe scheduling information, thereby saving signaling overhead.

Referring to FIG. 3, the method for scheduling multiple subframe transmissions on the network side in this embodiment is as follows:

Before performing multi-subframe scheduling, the network side may notify the UE to perform multi-subframe scheduling by using high layer signaling (such as RRC signaling).

Step 301: The network side determines downlink control signaling DCI information used for scheduling N subframe data transmissions. The DCI information includes common scheduling information and subframe scheduling information corresponding to each subframe, where N is a positive integer, and may be configured by a system preset or a network side. The common scheduling information in this embodiment includes one or more of a carrier indication, a resource block indication, a modulation and coding level, and precoding information.

Step 302: The network side sends the DCI information to the UE by using a physical downlink control channel PDCCH in the downlink subframe n. n is a positive integer. For the downlink scheduling, the N subframes are the downlink subframe n and the subsequent consecutive N-1 downlink subframes; for the uplink scheduling, the N subframes are the uplink subframe n+k and the subsequent continuous N- 1 uplink subframe, k is a preset parameter and is a positive integer.

The value of k may depend on actual needs. Preferably, for FDD (Frequency Division Duplex) systems, k=4. For TDD (Time Division Duplex) systems, the values of k are shown in Table 1. Or for the uplink and downlink configuration 0 of the TDD system, if the most significant bit (MSB) in the uplink index (UL index) information in the DCI information is 1, k is as shown in Table 1; if the uplink index in the DCI information The least significant bit (LSB) in the message is 1, then k=7.

Table 1

TDD UL/DL subframe number n (sub-frame nickname n)

Configuration (酉己) 0 1 2 3 4 5 6 7 8 9

0 4 6 4 6

1 6 4 6 4 4 4 4

5 4

6 7 7 7 7 5 If the network side needs to re-schedule some of the scheduled N subframes, the DCI information is re-determined, and the re-determined DCI information is sent through the PDCCH in the downlink subframe n', where n' A positive integer, and when the subframe is numbered in the order of small to large, n'>n, the downlink subframe n' is one of the scheduled N subframes. The number of DL grants sent in each downlink subframe is not greater than 1. The UE always performs data reception according to the scheduling information in the latest DL grant.

After the network side sends the DCI information, the UE needs to receive the DCI information and perform the data according to the following. The implementation process of the UE side is introduced by using an embodiment.

Referring to FIG. 4, the method for scheduling multiple subframe transmissions on the UE side in this embodiment is as follows:

After the multi-frame scheduling is enabled, the UE blindly detects the multi-frame scheduling DCI, otherwise the UE blindly detects the single-frame scheduling DCI.

Step 401: The UE receives the DCI information sent by the network side in the downlink subframe n, and obtains the common scheduling information and the subframe scheduling information corresponding to each subframe, where n is a positive integer. The common scheduling information in this embodiment includes one or more of a carrier indication, a resource block indication, a modulation coding level, and precoding information.

Step 402: For the downlink scheduling, the UE receives the downlink data in the downlink subframe n and the subsequent N-1 downlink subframes according to the common scheduling information and the subframe scheduling information corresponding to each subframe, where N is A positive integer.

Step 403: For uplink scheduling, the UE sends uplink data in the uplink subframe n+k and the following N-1 uplink subframes according to the common scheduling information and the subframe scheduling information corresponding to each subframe.

The UE receives the DCI information sent by the network side in the downlink subframe n′, and receives the downlink data or sends the uplink data according to the DCI information in the downlink subframe n′, where n′ is a positive integer, and n,>n, the downlink sub- The frame n' is one of the scheduled N subframes. The number of UL grants sent in each subframe is not greater than 1. The UE always receives data according to the scheduling information in the last UL grant.

Regarding the subframe scheduling information and the HARQ process, this embodiment provides various implementation manners.

The first mode: N subframes respectively correspond to N sub-processes in the same hybrid automatic retransmission (HARQ) process, where one HARQ process is composed of N sub-processes, and N sub-processes are sequentially arranged. The position of each child process in the HARQ process is fixed, that is, the child process X is always transmitted on the Xth subframe in N subframes, 0 < x < N, as shown in FIG. In this case, the HARQ process number can be configured in advance on the network side and the UE side, and the HARQ process information (such as the HARQ process ID) is not required to be carried in the DCI information. Or, the N subframes correspond to the same HARQ process, and therefore carry the HARQ process information in the common scheduling information.

In addition, the correspondence between the number of transmissions of each sub-process and the redundancy version information (RV) is configured in advance on the network side and the UE side, for example, the initial transmission uses the redundancy version 0, and the first retransmission uses the redundancy version 2, The second retransmission uses the redundancy version 3, the third retransmission uses redundancy version 1, then the network side does not need to notify the RV in the DCI. At this time, when the DCI information is scheduled to be transmitted by the single codeword, the subframe scheduling information includes: new data indication information (NDI). When the DCI information is scheduled to be transmitted by the multi-codeword, the subframe scheduling information includes: an NDI corresponding to the codeword 1 and an NDI corresponding to the codeword 2.

Preferably, the multi-frame scheduling DCI in this embodiment is formed by adding the subframe scheduling information corresponding to the sub-process 2-N to the existing DCI information of the LTE Rel-10 (version 10). The original NDI in the LTE Rel-10 DCI corresponds to the child process 1 , and the original RV is reserved. The subframe scheduling information corresponding to the added sub-process 2-N can be implemented by reusing the reserved bits in the original DCI, such as reusing the bits reserved by the RV (if a reserved bit is insufficient, a new bit can also be added), Directly add new bit implementations. Preferably, the NDI information has a length of 1 bit and the RV information has a length of 2 bits. The receiving end needs to count the number of transmissions of each sub-process to determine the RV information of the corresponding sub-process.

If the network side can schedule any part of the N subframes, the DCI needs to notify the subframe scheduling identifier to indicate the scheduled subframes in the N subframes. Preferably, N bits can be set, corresponding to N subframes in order. If the subframe is scheduled, the corresponding bit is set to T, otherwise it is "0".

The second method: N subframes respectively correspond to N sub-processes in the same hybrid automatic retransmission (HARQ) process, where one HARQ process is composed of N sub-processes, and N sub-processes are sequentially arranged. The position of each child process in the HARQ process is fixed, that is, the child process X is always transmitted on the Xth subframe in N subframes, 0 < x < N. In this case, the HARQ process number can be configured in the network side and the UE side in advance, and the HARQ process information (such as the HARQ process ID) is not required to be carried in the DCI information. Alternatively, the scheduled N subframes correspond to the same HARQ process, and therefore the HARQ process information is carried in the common scheduling information.

In addition, the network side dynamically configures the RV of each child process. The subframe scheduling information includes: NDI and RV; and the DCI information scheduling multi-codeword transmission, the subframe scheduling information includes: NDI corresponding to the codeword 1 RV, NDI corresponding to codeword 2, and RV corresponding to codeword 2.

Preferably, the multi-frame scheduling DCI in this embodiment is formed by adding the subframe scheduling information corresponding to the sub-process 2-N to the existing DCI information of the LTE Rel-10 (version 10). The original NDI in the LTE Rel-10 DCI corresponds to the child process 1 , and the original RV is reserved. The subframe scheduling information corresponding to the added sub-process 2-N can be implemented by reusing the reserved bits in the original DCI, such as reusing the bits reserved by the RV (if a reserved bit is insufficient, a new bit can also be added), Directly add new bit implementations. Preferably, the NDI information has a length of 1 bit and the RV information has a length of 2 bits. The transmitting end uses the same physical resource, modulation coding level, and precoding matrix in N subframes to perform data transmission according to the NDI and RV corresponding to each subframe.

The third mode: N subframes correspond to different HARQ processes, and N subframes have N HARQ processes. The order of the processes is not fixed, see Figure 6. Then, the subframe scheduling information includes HARQ process information.

In addition, the correspondence between the number of transmissions of each sub-process and the redundancy version information (RV) is configured in advance on the network side and the UE side, for example, the initial transmission uses the redundancy version 0, and the first retransmission uses the redundancy version 2, The second retransmission uses redundancy version 3, and the third retransmission uses redundancy version 1, so the network side does not need to notify the RV in the DCI. At this time, when the DCI information is scheduled to be transmitted by the single codeword, the subframe scheduling information includes: a HARQ process number and an NDI. When the DCI information is scheduled to be transmitted by the multi-codeword, the subframe scheduling information includes: a HARQ process number, an NDI corresponding to the codeword 1, and an NDI corresponding to the codeword 2.

Preferably, the multi-frame scheduling DCI in this embodiment is formed by adding the subframe scheduling information corresponding to the sub-process 2-N to the existing DCI information of the LTE Rel-10 (version 10). The original DI in the LTE Rel-10 DCI corresponds to the first HARQ process, and the original RV is reserved. The subframe scheduling information corresponding to the added sub-process 2-N can be implemented by reusing the reserved bits in the original DCI, such as reusing the bits reserved by the RV (if a reserved bit is insufficient, a new bit can also be added), Directly add new bit implementations. Preferably, the HARQ process number occupies 4 bits in the TDD system and 3 bits in the FDD system; the NDI message length is 1 bit. The UE needs to count the number of transmissions of each sub-process to determine the RV information of the corresponding sub-process.

If the network side can schedule any part of the N subframes, the DCI needs to notify the subframe scheduling identifier to indicate the scheduled subframes in the N subframes. Preferably, N bits can be set, corresponding to N subframes in order. If the subframe is scheduled, the corresponding bit is set to "1", otherwise it is "0". Alternatively, if the network side can schedule any part of the N subframes, the HARQ process number corresponding to the unscheduled downlink subframe is set to a preset invalid value. Or, if the network side can schedule any part of the N subframes, the HARQ process ID of the unscheduled downlink subframe m is the same as the HARQ process ID of the scheduled downlink subframe m′ where the location is closest; Is a positive integer, m 'is a positive integer, and w ≤ m ' < m when numbering the sub-frames in ascending order.

The fourth mode: N subframes correspond to different HARQ processes, and N subframes have N HARQ processes, and the order of processes is not fixed. Then, the subframe scheduling information includes HARQ process information.

In addition, the network side dynamically configures the RV of each child process. When the DCI information is scheduled to be transmitted by the single codeword, the subframe scheduling information includes: a HARQ process number, an NDI, and an RV. When the DCI information is scheduled to be transmitted by the multiple codewords, the subframe scheduling information includes: a HARQ process number, a codeword 1 Corresponding NDI, RV corresponding to codeword 1, NDI corresponding to codeword 2, and RV corresponding to codeword 2.

If the network side can schedule any part of the N subframes, the DCI needs to notify the subframe scheduling identifier to indicate A subframe that is scheduled in N subframes. Preferably, N bits can be set, corresponding to N subframes in order. If the subframe is scheduled, the corresponding bit is set to "1", otherwise it is "0". Alternatively, if the network side can schedule any part of the N subframes, the HARQ process number corresponding to the unscheduled downlink subframe is set to a preset invalid value. Or, if the network side can schedule any part of the N subframes, the HARQ process ID of the unscheduled downlink subframe m is the same as the HARQ process ID of the scheduled downlink subframe m′ where the location is closest; Is a positive integer, m 'is a positive integer, and w ≤ m '< m when numbering the sub-frames in ascending order.

The implementation process of changing a special cell is understood by the above description. The process is mainly implemented by the UE and the network side device. The internal structure and functions of the UE and the network side device are introduced below.

Referring to FIG. 7, the base station in this embodiment includes: a scheduling module 701 and an interface module 702. The base station may be specifically an evolved base station (e B ) or the like.

The scheduling module 701 is configured to determine downlink control signaling DCI information for scheduling N subframe data transmissions. The DCI information includes common scheduling information and subframe scheduling information corresponding to each subframe, where N is a positive integer. The common scheduling information includes one or more of a carrier indication, a resource block indication, a modulation coding level, and precoding information.

The interface module 702 is configured to send the DCI information to the UE by using a physical downlink control channel PDCCH in the downlink subframe n, where n is a positive integer. For the downlink scheduling, the N subframes are the downlink subframe n and the subsequent consecutive N-1 downlink subframes; for the uplink scheduling, the N subframes are the uplink subframe n+k and the subsequent continuous N- 1 uplink subframe, where k is a preset parameter and is a positive integer. The interface module 702 is further configured to notify the UE to perform multi-subframe scheduling by using high layer signaling before performing multi-subframe scheduling.

The scheduling module 701 is further configured to re-determine the DCI information if it is necessary to re-schedule a portion of the scheduled N subframes. The interface module 702 is further configured to send DCI information by using a PDCCH in the downlink subframe n', where n' is a positive integer, and when the subframe is numbered in a small to large order, n, >n, the downlink subframe n' is One of the scheduled N subframes.

The scheduling module 701 is further configured to schedule any part of the N subframes, and the subframe scheduling information needs to include a subframe scheduling identifier to indicate the scheduled subframes in the N subframes. Alternatively, the scheduling module 701 is further configured to schedule any part of the N subframes, and the scheduling module sets the HARQ process number corresponding to the unscheduled downlink subframe to a preset invalid value. Alternatively, the scheduling module 701 is further configured to schedule any part of the N subframes, and the scheduling module sets the HARQ process ID of the unscheduled downlink subframe m and the HARQ process ID of the scheduled downlink subframe m ' that is closest to the location. The same; where, is a positive integer, m 'is a positive integer, and w ≤ m ' < m when the sub-frames are numbered in ascending order.

The N subframes respectively correspond to N child processes in the same hybrid automatic retransmission HARQ process, wherein one HARQ process is composed of N child processes, and the N child processes are sequentially arranged. The common scheduling information in the downlink scheduling information further includes a hybrid automatic retransmission HARQ process number. The subframe scheduling information includes: new data indication information DI; or: DI and redundancy version RV. When the DCI information is scheduled to transmit multiple codewords, The subframe scheduling information includes: NDI corresponding to codeword 1 and NDI corresponding to codeword 2; or: NDI corresponding to codeword 1, RV corresponding to codeword 1, NDI corresponding to codeword 2, and codeword 2 RV.

The N subframes are respectively paired with N different HARQ processes. When the DCI information is scheduled to be transmitted by a single codeword, the subframe scheduling information includes: a HARQ process number and an NDI; or includes: a HARQ process number, an NDI, and an RV. When the DCI information is scheduled to be transmitted by the multi-codeword, the subframe scheduling information includes: a HARQ process number, an NDI corresponding to the codeword 1 and an NDI corresponding to the codeword 2; or: a HARQ process number, and an NDI corresponding to the codeword 1. The RV corresponding to codeword 1, the NDI corresponding to codeword 2, and the RV corresponding to codeword 2.

Referring to FIG. 8, the user equipment in this embodiment includes:

The interface module 801 is configured to receive DCI information sent by the network side in the downlink subframe n, and obtain common scheduling information and subframe scheduling information corresponding to each subframe, where n is a positive integer. The common scheduling information includes one or more of a carrier indication, a resource block indication, a modulation coding level, and precoding information. The interface module 801 is further configured to learn, by using high layer signaling, that the network side performs multi-subframe scheduling.

For the downlink scheduling, the control module 802 is configured to: according to the common scheduling information and the subframe scheduling information corresponding to each subframe, the control interface module 801 receives the downlink data in the downlink subframe n and the subsequent N-1 downlink subframes, Where N is a positive integer.

For the uplink scheduling, the control module 802 corresponding to the subframe scheduling information according to the common scheduling information and each subframe, and the control interface module 801 sends the uplink in the uplink subframe n+k and the subsequent N-1 uplink subframes. data.

The interface module 801 is further configured to receive DCI information sent by the network side in the downlink subframe n'. The control module 802 controls the interface module according to the DCI information in the downlink subframe n', and receives the downlink data or sends the uplink data, where n' is a positive integer, and when the subframe is numbered in the order of small to large, n'>n The downlink subframe n' is one of the scheduled N subframes.

The interface module 801 is further configured to determine, according to the subframe scheduling identifier, which subframes in the N subframes are scheduled. Alternatively, the interface module 801 is further configured to determine, according to the corresponding HARQ process ID in the N subframes, which subframes in the N subframes are scheduled or not scheduled. If the HARQ process ID of the subframe is a preset invalid value, or the HARQ process ID of the subframe is the same as the HARQ process ID of the scheduled downlink subframe m′ where the location is closest, it is determined that the subframe m is not scheduled; Is a positive integer, m 'is a positive integer, and w ≤ m ' < m when numbering the sub-frames in ascending order.

The N subframes respectively correspond to N sub-processes in the same hybrid automatic retransmission HARQ process, wherein one HARQ process is composed of N sub-processes, and N sub-processes are sequentially arranged. The common scheduling information in the downlink scheduling information further includes a hybrid automatic retransmission HARQ process number. When the DCI information is scheduled to be transmitted by a single codeword, the subframe scheduling information includes: new data indication information DI; or: DI and redundancy version RV. When the DCI information is scheduled to be transmitted by the multi-codeword, the subframe scheduling information includes: an NDI corresponding to the codeword 1 and an NDI corresponding to the codeword 2; or an NDI corresponding to the codeword 1 and an RV corresponding to the codeword 1. The NDI corresponding to codeword 2 and the RV corresponding to codeword 2.

The N subframes respectively correspond to different HARQ processes. When the DCI information is scheduled to be transmitted by a single codeword, the sub The frame scheduling information includes: a HARQ process number and an NDI; or includes: a HARQ process number, an NDI, and an RV. When the DCI information is scheduled to be transmitted by the multi-codeword, the subframe scheduling information includes: a HARQ process number, an NDI corresponding to the codeword 1 and an NDI corresponding to the codeword 2; or: a HARQ process number, and an NDI corresponding to the codeword 1. The RV corresponding to codeword 1, the NDI corresponding to codeword 2, and the RV corresponding to codeword 2.

In the embodiment of the present invention, the network side transmits scheduling information for multiple subframes by using one subframe, and the scheduling information includes common scheduling information and subframe scheduling information, and scheduling information common to multiple subframes is represented by common scheduling information, for each subframe. The separately scheduled information is represented by subframe scheduling information, thereby saving signaling overhead. The embodiment of the present invention further provides different embodiments for whether the multiple subframes share the same HARQ process. If the same HARQ process is shared, the HARQ process ID or only one HARQ process number may be carried in the scheduling information. If multiple subframes correspond to different HARQ processes, the order of each HARQ process is not fixed, and scheduling is more flexible. And the corresponding relationship between the number of transmissions and the RV can be set in advance in the system, and the RV is not carried in the scheduling information, thereby further reducing the signaling overhead. Alternatively, the network side dynamically configures the RV to make scheduling more flexible.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer usable storage medium (including but not limited to disk storage and optical storage, etc.) in which computer usable program code is embodied.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and the equivalents thereof The invention is also intended to encompass such modifications and variations.

Claims

Rights request

A method for scheduling multi-subframe transmission, comprising the steps of:

The network side sends the DCI information to the UE by using a physical downlink control channel PDCCH in the downlink subframe n, where n is a positive integer;

2. The method according to claim 1, wherein the common scheduling information comprises one or more of a carrier indication, a resource block indication, a modulation coding level, and precoding information.

The method according to claim 1 or 2, wherein the N subframes respectively correspond to N child processes in the same hybrid automatic retransmission HARQ process, wherein one HARQ process is composed of N child processes, N children The order of the processes; or

The N subframes are respectively paired with N different HARQ processes.

The method according to claim 3, wherein, when the N subframes respectively correspond to N sub-processes in the same HARQ process, for the downlink scheduling, the common scheduling information further includes a hybrid automatic retransmission HARQ process. Numbering.

The method according to claim 3, wherein the N subframes respectively correspond to N sub-processes in the same HARQ process, and when the DCI information is scheduled to transmit a single codeword, the subframe scheduling information includes : new data indication information NDI; or include: NDI and redundancy version RV;

The N subframes respectively correspond to the N sub-processes in the same HARQ process, and when the DCI information is scheduled to be transmitted by the multi-codeword, the subframe scheduling information includes: an NDI corresponding to the codeword 1 and an NDI corresponding to the codeword 2; Or include: NDI corresponding to codeword 1, RV corresponding to codeword 1, NDI corresponding to codeword 2, and RV corresponding to codeword 2.

The method according to claim 3, wherein the N subframes are respectively used for N different HARQ processes, and when the DCI information is scheduled to be transmitted by a single codeword, the subframe scheduling information includes: a HARQ process. Number and NDI; or include: HARQ process number, NDI and RV;

The N subframes are respectively used for N different HARQ processes, and when the DCI information is scheduled to be transmitted by the multi-codeword, the subframe scheduling information includes: a HARQ process number, an NDI corresponding to the codeword 1, and an NDI corresponding to the codeword 2. Or include: HARQ process number, NDI corresponding to codeword 1, RV corresponding to codeword 1, NDI corresponding to codeword 2, and RV corresponding to codeword 2.

The method according to claim 3, wherein the subframe scheduling information further comprises a subframe scheduling identifier, configured to indicate a scheduled subframe in the N subframes.

The method according to claim 3, wherein the N subframes are respectively for N different HARQ processes, and if the network side schedules some subframes in the N subframes, the unscheduled The HARQ process ID of the subframe m is set to a preset invalid value; or the HARQ process number corresponding to the unscheduled subframe m of the network side is the same as the HARQ process ID of the scheduled subframe m′ where the location is closest; , is a positive integer; m 'is a positive integer, and "≤ m ' < m when numbering the sub-frames in order from small to large.

The method according to claim 1, wherein the network side notifies the UE to perform multi-subframe scheduling by high layer signaling before performing multi-subframe scheduling.

The method according to claim 1, wherein after the network side sends the DCI information in the downlink subframe n, the method further includes the following steps:

If the network side needs to re-schedule some of the scheduled N subframes, re-determine the DCI information, and send DCI information through the PDCCH in the downlink subframe n', where n' is a positive integer, and In the small to large sequence, when the subframe number is n'>n, the downlink subframe n' is one of the scheduled N subframes.

A method for scheduling multi-subframe transmission, comprising the steps of:

For the downlink scheduling, the UE receives the downlink data in the downlink subframe n and the subsequent N-1 downlink subframes according to the common scheduling information and the subframe scheduling information corresponding to each subframe, where N is a positive integer. ;

For the uplink scheduling, the UE sends uplink data in the uplink subframe n+k and the following N-1 uplink subframes according to the common scheduling information and the subframe scheduling information corresponding to each subframe, where k is The default parameter is a positive integer.

The method according to claim 11, wherein the common scheduling information comprises one or more of a carrier indication, a resource block indication, a modulation coding level, and precoding information.

The method according to claim 11 or 12, wherein the N subframes respectively correspond to N child processes in the same hybrid automatic retransmission HARQ process, wherein one HARQ process is composed of N child processes, and N child processes Arrange in order; or

The N subframes are respectively paired with N different HARQ processes.

The method according to claim 13, wherein, when the N subframes respectively correspond to N sub-processes in the same HARQ process, the common scheduling information in the downlink scheduling information further includes a hybrid automatic retransmission HARQ process number. .

The method according to claim 13, wherein the N subframes respectively correspond to N sub-processes in the same HARQ process, and when the DCI information is scheduled to transmit a single codeword, the subframe scheduling information includes: The new data indicates the information NDI; or includes: NDI and redundancy version RV;

The N subframes respectively correspond to the N sub-processes in the same HARQ process, and when the DCI information is scheduled to be transmitted by the multi-codeword, the subframe scheduling information includes: an NDI corresponding to the codeword 1 and an NDI corresponding to the codeword 2; or Includes: Codeword 1 pair The corresponding NDI, the RV corresponding to codeword 1, the NDI corresponding to codeword 2, and the RV corresponding to codeword 2.

The method according to claim 13, wherein the N subframes are respectively used for N different HARQ processes, and when the DCI information is scheduled to be transmitted by a single codeword, the subframe scheduling information includes: a HARQ process. Number and NDI; or include: HARQ process number, NDI and RV;

The method according to claim 13, wherein the subframe scheduling information further comprises a subframe scheduling identifier, configured to indicate a scheduled subframe in the N subframes.

The method according to claim 13, wherein the N subframes are respectively used for N different HARQ processes, and the step of obtaining the common scheduling information by the UE and the subframe scheduling information corresponding to each subframe respectively includes:

The UE detects that the HARQ process number of the subframe m in the N subframes that can be scheduled by the DCI is a preset invalid value, and determines that the subframe is not scheduled; or

The UE detects that the HARQ process number of the subframe m in the N subframes that can be scheduled by the DCI is the same as the HARQ process ID of the downlink subframe m′, and determines that the downlink subframe is not scheduled; where, is a positive integer; ' is a positive integer, and w ≤ m ' < m when numbering the sub-frame by 'j, in the big order.

The method according to claim 11, wherein the UE learns that the network side performs multi-subframe scheduling by using high layer signaling before performing multi-subframe scheduling.

The method according to claim 11, wherein after receiving the DCI information sent by the network side in the downlink subframe n, the UE further includes the following steps:

The UE receives the DCI information sent by the network side in the downlink subframe n', and receives the downlink data or the uplink data according to the DCI information in the downlink subframe n', where n' is a positive integer, and is in order from small to large. When the subframe number is n, >n, the downlink subframe n' is one of the scheduled N subframes.

A base station, comprising:

The base station according to claim 21, wherein the common scheduling information comprises one or more of a carrier indication, a resource block indication, a modulation and coding level, and precoding information.

The base station according to claim 21 or 22, wherein the N subframes respectively correspond to N child processes in the same hybrid automatic retransmission HARQ process, wherein one HARQ process is composed of N child processes, and N child processes Arrange in order; or

The N subframes are respectively paired with N different HARQ processes.

The base station according to claim 23, wherein, when the N subframes respectively correspond to N sub-processes in the same HARQ process, for the downlink scheduling, the common scheduling information further includes a hybrid automatic retransmission HARQ process. Numbering.

The base station according to claim 23, wherein the N subframes respectively correspond to N sub-processes in the same HARQ process, and when the DCI information is scheduled to transmit a single codeword, the subframe scheduling information includes : new data indication information NDI; or include: NDI and redundancy version RV;

The base station according to claim 23, wherein the N subframes are respectively used for N different HARQ processes, and when the DCI information is scheduled to be transmitted by a single codeword, the subframe scheduling information includes: a HARQ process. Number and NDI; or include: HARQ process number, NDI and RV;

The base station according to claim 23, wherein the subframe scheduling information further includes a subframe scheduling identifier, which is used to indicate a scheduled subframe in the N subframes.

The base station according to claim 23, wherein the N subframes are respectively used for N different HARQ processes, and if the network side schedules some subframes in the N subframes, the scheduling The module sets the HARQ process ID of the unscheduled subframe m to a preset invalid value; or the scheduling module sets the HARQ process ID corresponding to the unscheduled subframe and the HARQ process ID of the scheduled subframe that is closest to the location Same; where W is a positive integer; 'is a positive integer, and w ≤ ' < m when numbering the sub-frames in order from small to large.

The base station according to claim 21, wherein the interface module is further configured to notify the UE to perform multi-subframe scheduling by using high layer signaling before performing multi-subframe scheduling.

The base station according to claim 21, wherein the scheduling module is further configured to: re-determine DCI information if a part of the scheduled N subframes needs to be re-scheduled; the interface module is further configured to pass the downlink The PDCCH in the frame n' transmits DCI information, where n' is a positive integer, and when the subframe is numbered in the order of small to large, n, >n, and the downlink subframe n' is one of the scheduled N subframes. Subframe.

31. A user equipment, comprising: An interface module, configured to receive DCI information sent by the network side in the downlink subframe n, obtain common scheduling information, and subframe scheduling information corresponding to each subframe, where n is a positive integer;

For the downlink scheduling, the control module is configured to: according to the common scheduling information and the subframe scheduling information corresponding to each subframe, the control interface module receives the downlink data in the downlink subframe n and the subsequent N-1 downlink subframes, The N is a positive integer. For the uplink scheduling, the control module controls the interface module to perform the uplink subframe n+k and the subsequent N-1 uplinks according to the common scheduling information and the subframe scheduling information corresponding to each subframe. The uplink data is sent in the subframe.

The user equipment according to claim 31, wherein the common scheduling information comprises one or more of a carrier indication, a resource block indication, a modulation coding level, and precoding information.

The user equipment according to claim 31 or 32, wherein the N subframes respectively correspond to N child processes in the same hybrid automatic retransmission HARQ process, wherein one HARQ process is composed of N child processes, N children The order of the processes; or

The N subframes are respectively paired with N different HARQ processes.

The user equipment according to claim 33, wherein when the N subframes respectively correspond to N sub-processes in the same HARQ process, the common scheduling information in the downlink scheduling information further includes a hybrid automatic retransmission HARQ process. Numbering.

The user equipment according to claim 33, wherein the N subframes respectively correspond to N sub-processes in the same HARQ process, and when the DCI information is scheduled to transmit a single codeword, the subframe scheduling information includes : new data indication information NDI; or include: NDI and redundancy version RV;

The N subframes respectively correspond to the N sub-processes in the same HARQ process, and when the DCI information is scheduled to be transmitted by the multi-codeword, the subframe scheduling information includes: an NDI corresponding to the codeword 1 and an NDI corresponding to the codeword 2; or The method includes: NDI corresponding to codeword 1, RV corresponding to codeword 1, NDI corresponding to codeword 2, and RV corresponding to codeword 2.

The user equipment according to claim 33, wherein the N subframes are respectively used for N different HARQ processes, and when the DCI information is scheduled to be transmitted by a single codeword, the subframe scheduling information includes: HARQ Process ID and NDI; or include: HARQ process number, NDI, and RV;

The user equipment according to claim 33, wherein the subframe scheduling information further includes a subframe scheduling identifier, configured to indicate a scheduled subframe in the N subframes.

The user equipment according to claim 33, wherein the N subframes respectively detect N different HARQ processes, and the interface module detects a subframe m in the N subframes that the DCI can schedule. When the HARQ process number is a preset invalid value, it is determined that the subframe w is not scheduled; or

The interface module detects a HARQ process ID and a downlink of the subframe w in the N subframes that the DCI can schedule. When the HARQ number of the subframe m' is the same, it is determined that the downlink subframe w is unscheduled; where w is a positive integer; m 'is a positive integer, and w_m '< m when the subframe is numbered by 'j, in the big order .

The user equipment according to claim 31, wherein the interface module is further configured to learn, by the high layer signaling, that the network side performs multi-subframe scheduling.

The user equipment according to claim 31, wherein the interface module is further configured to receive DCI information sent by the network side in the downlink subframe n'; and the control module controls the interface according to the DCI information in the downlink subframe n' The module receives the downlink data or sends the uplink data, where n' is a positive integer, and when the subframe is numbered in the order of small to large, n, >n, the downlink subframe n' is one of the scheduled N subframes. frame.