KR20130143531A - A method and an apparatus for uplink scheduling in wireless communication system - Google Patents

Abstract

A method for an evolved Node B (eNB) to perform uplink scheduling in a wireless communication system according to the present invention includes the following steps: a step of transmitting signaling information, which includes synchronous hybrid automatic repeat request (HARQ) timing information of a physical uplink shared channel (PUSCH), to user equipment (UE); and a step of receiving PUSCH information transmitted by the UE. The timing information is determined based on grouping information of uplink and downlink configurations. [Reference numerals] (100) Radio frame;(101) Half-frame;(110) Specific sub-frame;(AA) Time slot;(BB) Sub-frame 0;(CC) Sub-frame 1;(DD) Sub-frame 2;(EE) Sub-frame 3;(FF) Sub-frame 4;(GG) Sub-frame 5;(HH) Sub-frame 6;(II) Sub-frame 9

Description

A method and apparatus for uplink scheduling in a wireless communication system

The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for performing uplink scheduling.

Long-Term Evolution (LTE) has two duplexing modes, namely frequency division duplexing (FDD) and time division duplexing (TDD). 1 is a schematic diagram illustrating a frame structure in a system of LTE. Each radio frame has a length of 10 ms and is equally divided into two half-frames of 5 ms, each half-frame having three time slots of 0.5 ms, It contains three specific fields of length 1ms in total. The three specific fields are Downlink pilot time slot (DwPTS), Guard period (GP) and Uplink pilot time slot (UpPTS), each sub-frame It consists of two consecutive time slots.

In a TDD system, transmissions from base stations (evolved Node B: eNBs) to user equipments (UEs) (called “downlinks”) and transmissions from UEs to eNBs (“uplinks” uplink). In the frame structure as shown in FIG. 1, ten sub-frames are shared between uplink and downlink within 10 ms, and each sub-frame is also configured as uplink or downlink, and configured as uplink The sub-frame is called an uplink sub-frame, and the sub-frame consisting of the downlink is called a downlink sub-frame. The TDD system supports seven types of uplink and downlink configurations as shown in FIG. 1, D represents a downlink subframe, U represents an uplink subframe, and S represents three Represents a specific sub-frame that includes certain fields.

Configuration number Transition
Cycle Sub-frame index 0 One 2 3 4 5 6 7 8 9 0 5 ms D S U U U D S U U U One 5 ms D S U U D D S U U D 2 5 ms D S U D D D S U D D 3 10 ms D S U U U D D D D D 4 10 ms D S U U D D D D D D 5 10 ms D S U D D D D D D D 6 10 ms D S U U U D S U U D

 Table 1: Uplink and Downlink Configuration

The TDD system of LTE supports the HARQ mechanism, the principle of which: the eNB allocates uplink resources to the UE; The UE transmits uplink data using uplink resources to the eNB; the eNB receives the uplink data, sends an HARQ indication to the UE, and the UE retransmits the uplink and downlink data based on the indication. In particular, a UE transmits uplink data through a PUSCH, and an eNB transmits the PUSCH scheduling and control information, that is, an uplink grant (UL) through a downlink physical downlink control channel (PDCCH). grant, and the eNB retransmits the indication carried by HARQ over a physical hybrid retransmission indicator channel. In the process as described above, the timing position and the successive retransmission timing position in one transmission of the PUSCH are determined based on predefined timing relationships, the predefined timing relationships from the UL grant to the PUSCH. A timing relationship, a timing relationship from PHICH to PUSCH, and a timing relationship from PUSCH to PHICH, which will be collectively referred to as a synchronous HARQ timing relationship of the PUSCH.

First, the timing relationships between UL grant or PHICH and PUSCH in LTE and LTE-A will be described.

With respect to the timing relationship from the UL grant to the PUSCH, it is assumed that the UE receives the UL grant in downlink sub-frame n (n is the index of the sub-frame, similar below), which UL grant is uplink Used to control the PUSCH in sub-frame n + k, where the value of k is defined in Table 2. In particular, for TDD uplink and downlink configurations (or simply referred to as “UL / DL configurations”) 1-6, the number of uplink sub-frames is less than or equal to the number of downlink sub-frames. (Frame S may be used as a downlink sub-frame). For any downlink sub-frame n, the unique timing relationship of the synchronous HARQ of the PUSCH can be configured through a unique k as shown in Table 2. It is possible that a PUSCH may not be scheduled in one downlink sub-frame, or only a PUSCH in one uplink sub-frame may be scheduled. For TDD UL / DL configuration 0, the number of uplink sub-frames is greater than the number of downlink sub-frames. In each downlink sub-frame, the PDCCH needs to schedule a PUSCH in two uplink sub-frames, for which k is not unique. An uplink index is used in the PDCCH to schedule the PUSCH in two uplink sub-frames, and another k is used for the PUSCH with different indices. As an example, when a UE receives a PDCCH in downlink sub-frame 0, the scheduled by the UE is the PUSCH in uplink sub-frame 4 and / or uplink sub-frame 7 and the UE is downlink sub- When the PDCCH is received in frame 1, what is scheduled by the UE is the PUSCH in uplink sub-frame 7 and / or uplink sub-frame 8.

For the timing relationship from PHICH to PUSCH, the PHICH resource set is allocated dependently for PUSCH in uplink sub-frames in LTE and LTE-A. Assuming the UE has received a PHICH in downlink sub-frame n, this PHICH is then used to control the PUSCH in sub-frame n + j, where j is defined in Table 2. In particular, for TDD UL / DL configurations 1-6, the number of uplink sub-frames is less than or equal to the number of downlink sub-frames. For any downlink sub-frame n, the unique timing relationship of the synchronous HARQ of the PUSCH may be configured via unique j, as shown in Table 2. Other PHICH resource sets may be configured in one downlink sub-frame, or only PHICH resource sets in the uplink sub-frame may be configured. For TDD UL / DL configuration 0, the number of uplink sub-frames is greater than the number of downlink sub-frames, and j is not unique. Two PHICH resource sets are configured in downlink sub-frames 0 and 5, i.e., PHICH resource 0 and PHICH resource 1, and for other PHICH resources, a different j is used. For example, when the UE receives the PHICH in downlink sub-frame 0, the PUSCH may be triggered in uplink sub-frame 4 and / or uplink sub-frame 7.

Configuration number Sub-frame index n 0 One 2 3 4 5 6 7 8 9 0 4,7 6.7 4,7 6.7 One 6 4 6 4 2 4 4 3 4 4 4 4 4 4 5 4 6 7 7 7 7 5

Table 2: Timing Relationship from UL-Grant / PHICH to PUSCH

Secondly, the timing relationship from PUSCH to PHICH in LTE and LTE-A will be described.

For TDD UL / DL configurations 1-6, when the UE receives a PHICH in downlink sub-frame n, this PHICH indicates the HARQ-ACK of the PUSCH in uplink sub-frame nh, and the above The values are shown in Table 3.

For TDD UL / DL configuration 0, when the UE receives a PHICH at PHICH resource 0 in downlink sub-frame n, since two PHICH resources are configured, this PHICH is based on the definition of h in Table 3 Control PUSCH in uplink sub-frame nh. In contrast, when the UE receives a PHICH in PHICH resource 1 in downlink sub-frames 0 or 5, this PHICH controls the transmission of the PUSCH in uplink sub-frame n-6.

Configuration number Sub-frame index n 0 One 2 3 4 5 6 7 8 9 0 7 4 7 4 One 4 6 4 6 2 6 6 3 6 6 6 4 6 6 5 6 6 6 4 7 4 6

Table 3: Timing Relationship from PUSCH to PHICH

Based on the three timing relationship tables (Tables 2 and 3) as described above, one cell transmits synchronously according to this synchronous HARQ timing relationship of the PUSCH when one cell uses any TDD UL / DL configurations. In order to implement the synchronous HARQ timing relationship of the PUSCH may be determined.

As users increase the demand for higher data transmission rates, advanced LTE (LTE-A) technology is proposed. In LTE-A, the ratio of uplink sub-frames and downlink sub-frames is determined by dynamic TDD technology, i.e. by configuring UL / DL in TDD via physical layer signaling. It follows the rate of link throughput and enables an increase in UL / DL peak rate and system throughput.

For a dynamic TDD system, the TDD UL / DL configuration in the cell is dynamically changed using current UL / DL throughputs. In terms of existing LTE and LTE-A protocols, a UE obtains the UL / DL configuration in the cell through broadcast system information, and also based on Tables 2 and 3 by using a TDD configuration index. Acquire a synchronous HARQ timing relationship of the PUSCH. However, in the dynamic TDD scheme, fast switching between TDD UL / DL configurations is required, whereas, in terms of existing protocols of LTE and LTE-A, a short refresh of system information is 640 ms. As a result, in terms of methods of existing protocols of LTE and LTE-A, a change in the UE UL / DL configuration is indicated through system information to obtain a synchronous HARQ timing relationship of the PUSCH, and the switching period of the TDD configurations is very high. It will be long.

Therefore, for a dynamic TDD system, the synchronous HARQ timing relationship of the PUSCH cannot be derived through the TDD UL / DL configuration in the conventional method. Thus, there is a need for an efficient technical solution to address uplink scheduling issues in dynamic TDD systems.

An object of the present invention is to address one of the defects as described above, and in particular, to provide a PUSCH transmission method in a dynamic TDD system.

In the technical solution of the present invention, 7 TDD UL / DL configurations defined in the existing LTE / LTE-A are grouped based on the period of the round trip time (RTT) or other criterion of the PUSCH. the eNB schedules the PUSCH via signaling, the average time indicating the current grouping information for the UE; The UE determines the scheduled synchronous HARQ timing relationship of the PUSCH with reference to the synchronous HARQ timing relationship of the PUSCH of the TDD UL / DL configurations included in the group. Information of the existing seven UL / DL configurations after grouping by the present invention exists to indicate only the UE to the synchronous HARQ timing relationship of the PUSCH, and does not limit the operation of the UL / DL sub-frames in the current system. Do not. The UE obtains information about grouping of current TDD UL / DL configurations by scheduling of PUSCH and signaling sent by eNB, and UL / DL sub-frames of current TDD UL / DL configurations in the system are Although different from any of the UL / DL sub-frames, the UE is a synchronous HARQ timing relationship of the PUSCH of the TDD UL / DL configurations included in the group and a synchronous HARQ of the PUSCH to be scheduled based on the method of the present invention. The timing relationship can be determined.

In a wireless communication system according to an embodiment of the present invention, a method of performing uplink scheduling by an evolved Node B (eNB) may include a physical uplink shared channel (PUSCH) to a user equipment (UE). And transmitting signaling information including synchronous HARQ (Hybrid Automatic Repeat Request) timing information of the UE and receiving PUSCH information transmitted by the UE, wherein the timing information includes the uplink. Characterized in that it is determined based on the information of the grouping of the link and downlink configurations.

In addition, in a wireless communication system according to an embodiment of the present invention, a method of performing uplink scheduling by a UE includes: a synchronous HARQ (Hybrid) of an uplink physical shared channel (PUSCH) transmitted by an eNB Automatic Repeat request) receiving signaling information including timing information and transmitting PUSCH information to the eNB, wherein the synchronous HARQ timing information includes the uplink and downlink ) Is determined based on the information of the grouping of the components.

An evolved Node B (eNB) performing uplink scheduling in a wireless communication system according to an embodiment of the present invention includes a transceiver for transmitting and receiving data through a wireless network and an uplink physical shared channel to a UE. Transmitting signaling information including synchronous HARQ timing information of a shared channel (PUSCH) and receiving PUSCH information transmitted by the UE based on the synchronous HARQ timing information And a control unit for controlling an operation, wherein the timing information is determined based on information of grouping of the uplink and downlink configurations.

In addition, a user equipment (UE) performing uplink scheduling in a wireless communication system according to an embodiment of the present invention includes a transceiver for transmitting and receiving data through a wireless network and an evolved Node B (eNB). Controlling an operation of receiving signaling information including synchronous HARQ (Hybrid Automatic Repeat request) timing information of an uplink physical shared channel (PUSCH) and transmitting PUSCH information to the eNB It includes a control unit; The synchronous HARQ timing information is determined based on information of grouping of the uplink and downlink configurations.

In the technical solutions of the present invention, the transmission of a PUSCH in a dynamic TDD system can be efficiently coordinated, and the UE can identify the group of current configurations by receiving the signaling, and thus the synchronous HARQ timing relationship of the PUSCH to be scheduled. Can be determined. The solutions of the present invention can achieve scheduling of PUSCH in a dynamic TDD system with little modification of the system. In addition, the solution as described above of the present invention will have minimal changes to the existing system and will not jeopardize the compatibility of the system and is efficient and easy to achieve.

1 is a schematic diagram of a frame structure of a TDD system of LTE;
2 is a flowchart of an uplink scheduling method at a network side of an embodiment of the present invention;
3 is a schematic diagram of an uplink scheduling method at a UE side of an embodiment of the present invention;
4 is a schematic diagram of a synchronous HARQ timing relationship of a PUSCH determined by a bit value of a UL-index or a UL-DAI and a position of a UL-grant in a UL grant;
5 is a schematic diagram of a synchronous HARQ timing relationship of a PUSCH determined by a bit value of a UL-index or a UL-DAI and a position of a UL-grant in a UL-grant.
6 is a schematic diagram of a synchronous HARQ timing relationship of a PUSCH determined by the position of a UL-grant;
7 is a schematic diagram of a synchronous HARQ timing relationship of a PUSCH obtained by modifying TDD UL / DL configuration 0;

In the following, embodiments of the present invention will be described in more detail, examples of embodiments are shown in the drawings, and the same or similar reference numerals represent the same or similar elements or those having the same or similar functional throughputs. It should be noted that the embodiments to be described herein with reference to the drawings are schematic and are only used to explain the present invention, and should not be considered in a limiting manner.

The present invention mainly relates to the field of dynamic TDD. In this field, a TDD UL / DL configuration may be dynamically changed by controlling signaling of physical layers as the UL / DL throughput in a cell changes. Can be. According to existing LTE and LTE-A protocols, the shortest refresh period is 640 ms and the switching period of the TDD configuration makes the changes in the UE UL / DL configurations via system messages. It is very long by using the notification method, and then obtains the synchronous HARQ timing relationship of the PUSCH.

In order to achieve the object of the present invention, an embodiment of the present invention provides an uplink scheduling method including the following steps as shown in FIG.

210: The eNB transmits signaling information to the UE, wherein the signaling information includes synchronous HARQ timing information of a PUSCH, and the timing information is determined based on information of groups of the UL / DL configurations.

In particular, the eNB transmits signaling information to the UE, the signaling information including synchronous HARQ timing information of an uplink physical shared channel (PUSCH), wherein the timing information is for the groups of UL / DL configurations. It is determined based on the information.

The grouping of the UL / DL configurations includes grouping the UL / DL configurations based on the characteristics of the TDD UL / DL configurations, in particular PUSCH Round Trip Time (PUSCH RTT). Thus, UL / DL configurations can be grouped or combined as appropriate. It should be noted that the examples of the groups below are only part of the implementations.

In addition, as an example, the UL / DL configuration groups include any one of the following options:

Option A: Based on the period of the round trip time (RTT) of the PUSCH, the seven TDD UL / DL configurations of LTE and LTE-A TDD UL / DL configurations 1, with an RTT of 10 ms Grouping into a first group of 2, 3, 4, 5 and a second group of TDD UL / DL configurations 0, 6 with an RTT other than 10 ms;

Option B: TDD UL / DL configurations 1, wherein the seven TDD UL / DL configurations of LTE and LTE-A have an RTT of 10 ms based on the period of the round trip time (RTT) of PUSCH; Grouped into the first group of 2, 3, 4, 5, and the second group of TDD UL / DL configuration 0 with RTT not 10ms and the third group of TDD UL / DL configuration 6 with RTT not 10ms that;

Option C: TDD UL / DL configurations 1, wherein the seven TDD UL / DL configurations of LTE and LTE-A have an RTT of 10 ms based on the period of the round trip time (RTT) of PUSCH; Grouping into the first group of 2, 3, 4, 5 and the second group of TDD UL / DL configurations 0 with an RTT other than 10 ms. In this method, the system cannot dynamically set the TDD UL / DL configuration to TDD UL / DL configuration 6.

Option D: TDD UL / DL configurations 1, wherein the seven TDD UL / DL configurations of LTE and LTE-A have an RTT of 10 ms based on the period of the round trip time (RTT) of PUSCH; Grouping into a first group of 2, 3, 4, 5 and a second group of TDD UL / DL configurations 6 with an RTT other than 10 ms. In this method, the system cannot dynamically set the TDD UL / DL configuration to TDD UL / DL configuration 0.

In the implementation of the present invention, the eNB is based on the preset grouping method and the bit values in the UL-Index or the UL-DAI in the UL-Grant in each sub-frame. Indicates the information of the groups. As an example, in option C, the eNB indicates the information of the groups via the bit values of the UL-index or the UL-DAI in the UL-grant of sub-frames 0, 1, 6.

For options A, B or C:

When the bit value is "00", it indicates that the current TDD DL / UL configuration is the first group.

If the bit value is "01", "10" or "11", it indicates that the current TDD DL / UL configuration is the second group,

For option D:

When the bit value is "01", "01", or "10", it indicates that the current TDD DL / UL configuration is the first group.

When the bit value is "11", it indicates that the current TDD DL / UL configuration is the second group.

Additionally, the eNB may also indicate the information of the groups using two bits in the TPC command in DCI format 0 or additional two bits in DCI format 0.

220: The eNB receives the PUSCH information transmitted by the UE based on the timing information.

Thereafter, the eNB receives the PUSCH information transmitted by the UE based on the timing information.

In addition, as shown in FIG. 3, an embodiment of the present invention provides an uplink scheduling method at the UE side, comprising the following steps:

310: The UE receives signaling information transmitted by the eNB, the signaling information includes synchronous HARQ timing information of a PUSCH, and the timing information is determined based on the information of groups of the UL / DL configurations.

The UE receives the signaling information transmitted by the eNB, the signaling information includes synchronous HARQ timing information of an uplink physical shared channel (PUSCH), the timing information of the UL / DL configurations. It is determined based on the information of the groups.

The grouping of the UL / DL configurations includes grouping the UL / DL configurations based on the PUSCH Round Trip Time (PUSCH RTT) of the TDD UL / DL configurations. Thus, UL / DL configurations can be grouped or combined as appropriate. It should be noted that the examples of the groups below are only part of the implementations.

In one example, UL / DL configuration groups include any of the following options:

Option A: Based on the period of the round trip time (RTT) of the PUSCH, the seven TDD UL / DL configurations of LTE and LTE-A TDD UL / DL configurations 1, with an RTT of 10 ms Grouping into a first group of 2, 3, 4, 5 and a second group of TDD UL / DL configurations 0, 6 with an RTT other than 10 ms;

Option B: TDD UL / DL configurations 1, wherein the seven TDD UL / DL configurations of LTE and LTE-A have an RTT of 10 ms based on the period of the round trip time (RTT) of PUSCH; Grouped into the first group of 2, 3, 4, 5, and the second group of TDD UL / DL configuration 0 with RTT not 10ms and the third group of TDD UL / DL configuration 6 with RTT not 10ms that;

Option C: TDD UL / DL configurations 1, wherein the seven TDD UL / DL configurations of LTE and LTE-A have an RTT of 10 ms based on the period of the round trip time (RTT) of PUSCH; Grouping into the first group of 2, 3, 4, 5 and the second group of TDD UL / DL configurations 0 with an RTT other than 10 ms. In this method, the system cannot dynamically set the TDD UL / DL configuration to TDD UL / DL configuration 6.

Option D: TDD UL / DL configurations 1, wherein the seven TDD UL / DL configurations of LTE and LTE-A have an RTT of 10 ms based on the period of the round trip time (RTT) of PUSCH; Grouping into a first group of 2, 3, 4, 5 and a second group of TDD UL / DL configurations 6 with an RTT other than 10 ms. In this method, the system cannot dynamically set the TDD UL / DL configuration to TDD UL / DL configuration 0.

In the implementation of the present invention, the UE receives the signaling information transmitted by the eNB, and a preset grouping method and a UL-Index in a UL-Grant in each sub-frames. Or determine the current information of groups based on the bit values in UL-DAI. As an example, in option C, the eNB indicates the information of the groups via the bit values of the UL-index or UL-DAI in the UL-grant of sub-frames 0, 1, 6:

If the bit value is "00", it indicates that a current TDD DL / UL configuration is the first group;

When the bit value is "01", "10" or "11", it indicates that the current TDD DL / UL configuration is the second group.

In addition, the UE may receive the information transmitted by the eNB and may also indicate the information of the groups using 2 bits in the TPC command in DCI format 0 or additional 2 bits in DCI format 0.

320: The UE transmits PUSCH information to the eNB based on the timing information.

Thereafter, the UE transmits PUSCH information to the eNB based on the timing information.

Corresponding to the method as described above, an embodiment of the present invention also provides an eNB including a transceiver comprising a transmitting module and a receiving module.

In addition, the eNB may include a transceiver for transmitting and receiving data to and from a wireless network, and a control unit for performing operations of the transmitting module and the receiving module using the transceiver.

In particular, the transmitting module is used for transmitting signaling information to the UE, the signaling information including synchronous HARQ timing information of an uplink physical shared channel (PUSCH), wherein the timing information is the UL / It is determined based on the information of groups of DL configurations.

In the device as described above, the grouping of the UL / DL configurations includes grouping UL / DL configurations based on the period of the PUSCH Round Trip Time (PUSCH RTT).

UL / DL configuration groups include any of the following options:

Option A: Based on the period of the round trip time (RTT) of the PUSCH, the seven TDD UL / DL configurations of LTE and LTE-A TDD UL / DL configurations 1, with an RTT of 10 ms Grouping into a first group of 2, 3, 4, 5 and a second group of TDD UL / DL configurations 0, 6 with an RTT other than 10 ms;

Option B: TDD UL / DL configurations 1, wherein the seven TDD UL / DL configurations of LTE and LTE-A have an RTT of 10 ms based on the period of the round trip time (RTT) of PUSCH; Grouped into the first group of 2, 3, 4, 5, and the second group of TDD UL / DL configuration 0 with RTT not 10ms and the third group of TDD UL / DL configuration 6 with RTT not 10ms that;

Option C: TDD UL / DL configurations 1, wherein the seven TDD UL / DL configurations of LTE and LTE-A have an RTT of 10 ms based on the period of the round trip time (RTT) of PUSCH; Grouping into the first group of 2, 3, 4, 5 and the second group of TDD UL / DL configurations 0 with an RTT other than 10 ms. In this method, the system cannot dynamically set the TDD UL / DL configuration to TDD UL / DL configuration 6.

Option D: TDD UL / DL configurations 1, wherein the seven TDD UL / DL configurations of LTE and LTE-A have an RTT of 10 ms based on the period of the round trip time (RTT) of PUSCH; Grouping into a first group of 2, 3, 4, 5 and a second group of TDD UL / DL configurations 6 with an RTT other than 10 ms. In this method, the system cannot dynamically set the TDD UL / DL configuration to TDD UL / DL configuration 0.

In the implementation of the present invention, the transmitting module in the eNB is a grouping method which is set in advance and the UL-Index in the UL-Grant in each sub-frames or the UL-Index in the UL-DAI. It indicates the information of groups based on bit values. As an example, in option C, the transmitting module at the eNB indicates the information of the groups via the bit values of the UL-index or the UL-DAI in the UL-grant of sub-frames 0, 1, 6:

When the bit value is "00", it indicates that the current TDD DL / UL configuration is the first group.

If the bit value is "01", "10" or "11", it indicates that the current TDD DL / UL configuration is the second group,

For option D:

When the bit value is "01", "01", or "10", it indicates that the current TDD DL / UL configuration is the first group.

When the bit value is "11", it indicates that the current TDD DL / UL configuration is the second group.

The transmitting module at the eNB indicates the information of the groups using 2 bits in the TPC command in DCI format 0 or additional 2 bits in DCI format 0.

The receiving module at the eNB is used to receive the PUSCH information transmitted by the UE based on the timing information.

Corresponding to the method as described above, an embodiment of the present invention also provides a UE comprising a transceiver consisting of a receiving module and a transmitting module.

In addition, the UE may include a transceiver for transmitting and receiving data over a wireless network, and a control unit for performing operations of the transmitting module and the receiving module using the transceiver.

In particular, the receiving module in the UE is used to receive signaling information transmitted by the eNB, the signaling information includes synchronous HARQ timing information of an uplink physical uplink shared channel (PUSCH), the timing The information is determined based on the above information of groups of UL / DL configurations.

The grouping of the UL / DL configurations includes grouping the UL / DL configurations based on the period of PUSCH Round Trip Time (PUSCH RTT).

UL / DL configuration groups include any of the following options:

Option A: Based on the period of the round trip time (RTT) of the PUSCH, the seven TDD UL / DL configurations of LTE and LTE-A TDD UL / DL configurations 1, with an RTT of 10 ms Grouping into a first group of 2, 3, 4, 5 and a second group of TDD UL / DL configurations 0, 6 with an RTT other than 10 ms;

Option B: TDD UL / DL configurations 1, wherein the seven TDD UL / DL configurations of LTE and LTE-A have an RTT of 10 ms based on the period of the round trip time (RTT) of PUSCH; Grouped into the first group of 2, 3, 4, 5, and the second group of TDD UL / DL configuration 0 with RTT not 10ms and the third group of TDD UL / DL configuration 6 with RTT not 10ms that;

Option C: TDD UL / DL configurations 1, wherein the seven TDD UL / DL configurations of LTE and LTE-A have an RTT of 10 ms based on the period of the round trip time (RTT) of PUSCH; Grouping into the first group of 2, 3, 4, 5 and the second group of TDD UL / DL configurations 0 with an RTT other than 10 ms. In this method, the system cannot dynamically set the TDD UL / DL configuration to TDD UL / DL configuration 6.

Option D: TDD UL / DL configurations 1, wherein the seven TDD UL / DL configurations of LTE and LTE-A have an RTT of 10 ms based on the period of the round trip time (RTT) of PUSCH; Grouping into a first group of 2, 3, 4, 5 and a second group of TDD UL / DL configurations 6 with an RTT other than 10 ms. In this method, the system cannot dynamically set the TDD UL / DL configuration to TDD UL / DL configuration 0.

In the implementation of the present invention, the receiving module at the UE receives the signaling information transmitted by the eNB, and is configured in the UL-index or UL-DAI in the UL-grant in the preset grouping method and respective sub-frames. Determine the current information of groups based on the bit values of. As an example, in the options A, B, or C, the receiving module at the eNB receives a UL-grant in sub-frames 0, 1, 6, and ULs the group to which the current uplink HARQ process belongs. Determine using the bit values in the UL-index or UL-DAI at the grant.

If the bit value is "00", it indicates that a current TDD DL / UL configuration is the first group;

When the bit value is "01", "10" or "11", it indicates that the current TDD DL / UL configuration is the second group.

For option D:

If the bit value is “01”, “01” or “10”, it indicates that the current TDD DL / UL configuration is the first group;

When the bit value is "11", it indicates that the current TDD DL / UL configuration is the second group.

The receiving module at the UE receives the information sent by the eNB and determines the information of the groups using two bits in the TPC command in DCI format 0 or using additional two bits in DCI format 0.

The transmitting module in the UE is used to transmit PUSCH information to the eNB based on the timing information.

In the technical solutions of the present invention, the transmission of the PUSCH in a dynamic TDD system can be efficiently coordinated, and the UE can identify the group of current configurations by receiving signaling, thus synchronous HARQ of the PUSCH to be scheduled. The timing relationship can be determined. The solutions of the present invention can achieve the scheduling of PUSCH in a dynamic TDD system with little modification of the system. In addition, the solution as described above of the present invention will have minimal changes to the existing system and will not jeopardize the compatibility of the system and is efficient and easy to achieve.

In order to enable an understanding of the present invention, the method or device of the present invention set forth above will also be described in conjunction with a specific application using a manner of interaction between the following devices:

Step 301: group the seven TDD UL / DL configurations into different groups in LTE and LTE-A to determine synchronous HARQ timing information of the PUSCH;

Step 302: the UE, after receiving the signaling sent by the eNB, identifies which group the current configurations belong to, and obtains a synchronous HARQ timing relationship of the PUSCH based on this grouping information;

Step 303: The UE transmits a PUSCH and receives a PHICH based on the timing relationship of the PUSCH determined in step 302.

In step 301, Embodiment 1 of grouping the seven TDD UL / DL configurations into different groups in LTE and LTE-A indicates the period of round trip time (RTT) of a PUSCH other than 10 ms or 10 ms. Grouping into two groups based on TDD UL / DL configurations 1, 2, 3, 4, 5 with an RTT of 10 ms and TDD UL / DL configurations 0 with an RTT other than 10 ms , Grouping into 6 different groups.

In step 301, Embodiment 2 of grouping the seven TDD UL / DL configurations into different groups in LTE and LTE-A groups based on the period of Round Trip Time (RTT) of a PUSCH. That is, the first group of TDD UL / DL configurations 1, 2, 3, 4, and 5 with an RTT of 10 ms, the second group of TDD UL / DL configuration 0, and the third of TDD UL / DL configuration 6 To group into groups;

In step 301, Embodiment 3 of grouping the seven TDD UL / DL configurations into different groups in LTE and LTE-A groups the seven TDD UL / DL configurations into two groups, that is, 10 ms. Grouping into a first group of TDD UL / DL configurations 1, 2, 3, 4, 5 with RTT and a second group of TDD UL / DL configuration 0. In this method, the system cannot dynamically set the TDD UL / DL configuration to TDD UL / DL configuration 6. The dynamic TDD UL / DL configurations mean configuring TDD UL / DL configurations through physical layer signaling.

In step 301, embodiment 4 of grouping the seven TDD UL / DL configurations into different groups in LTE and LTE-A groups the seven TDD UL / DL configurations into two groups, that is, 10 ms. Grouping into a first group of TDD UL / DL configurations 1, 2, 3, 4, 5 with RTT and a second group of TDD UL / DL configuration 6. In this method, the system cannot dynamically set the TDD UL / DL configuration to TDD UL / DL configuration 6.

One implementation of step 302 is for the UE to determine which group the current configurations belong to by the received location of the UL-grant or the bit values of the UL-index or UL-DAI at the UL-grant;

Another implementation of step 302 is to indicate which group the current configurations belong to by defining a new downlink control information (DCI) format or adding new bits to an existing UL-grant format;

Another implementation of step 302 is to indicate which group the current configuration belongs to by redefining some fields or padding bits in the existing DCI format and others.

For a PUSCH RTT period of 10 ms, the UE has the same location as that of the UL-grant of the PUSCH to be scheduled, because the location of each UL-grant is the signaling location transmitted by the eNB, for example the UL- The synchronous HARQ timing relationship of the PSUCH may be determined based on the position of the grant. For a PUSCH RTT period other than 10 ms, the UE needs to decide whether to allocate configuration 0 or 6 based on any scheme, and decide to use the synchronous HARQ timing relationship of the PUSCH of configuration 0 or 6. The scheme has some connectivity with the method in step 301, and the UE will decide to assign configuration 0 or 6 according to this grouping method and the signaling transmitted by the eNB. As an example, when option C is used, the UE has received the information indicating the second group, that is, the group of configuration 0, and the UE will determine that the group is configuration 0.

The method according to the present invention is implemented as the following application scheme 1:

For the PUSCH RTT period other than 10ms, TDD UL rather than Configuration 6 because the uplink / downlink ratio of Configuration 6 can be obtained by averaging configurations other than Configuration 0 using high downlink / uplink radios in time. / DL configuration 0 is used. The UE detects the PDCCH using the UL-grant in all downlink sub-frames with possibly UL-grant. If the UL-grant is detected as sub-frames # 0, # 1, or # 6, the synchronous HARQ timing relationship of the PUSCH to be scheduled is based on the bit values of the UL-index or UL-DAI and the UL in the UL-grant. It is determined based on the position of the grant; And, if it is determined that the UL-grant is sub-frames different from sub-frames 0, 1, or 6, the synchronous HARQ timing relationship of the PUSCH to be scheduled is determined based on the position of the UL-grant in the sub-frame. do.

Additional steps of the solution as described above are as an example:

Step 401: Configurations 0, 1, 2, 3, 4, 5 in the 7 TDD UL / DL configurations defined in LTE and LTE-A are grouped in option C, i.e .:

Group 1: TDD UL / DL configuration 0;

Group 2: TDD UL / DL configurations 1, 2, 3, 4, 5;

Step 402: Detect the PDCCH in all sub-frames with possible uplink scheduling and obtain a UL-grant, where the sub-frames with the possible uplink scheduling are sub-frames # 0, # 1, # 3, # 4, # 5, # 6, # 8, # 9. If the UL-grant exists in sub-frames # 0, # 1, # 6, the synchronous HARQ timing relationship of the PUSCH to be scheduled is based on the bit values of the UL-index or UL-DAI and the UL-grant of the UL-grant. Determined based on location; When the UL-grant is present in sub-frames other than sub-frames # 0, # 1, # 6, i.e., in subframes # 3, # 4, # 5, # 8, or # 9 The synchronous HARQ timing relationship of the PUSCH to be scheduled is determined based on the location of the UL-grant of the sub-frames and has the following specific steps:

(1) The mapping relationship table from UL-Grant / PHICH to PUSCH of Group 2 is obtained by merging portions of Group 2 of Table 2, as shown in FIG. 4;

Group number Downlink sub-frame index n 0 One 2 3 4 5 6 7 8 9 Group 2 4 6 4 4 6 4 4

Table 4: Separation k from UL-Grant / PHICH sub-frames of Group 2 to PUSCH sub-frames

(2) Redefine the bit value of the UL-DAI in the UL-index or UL-grant of the sub-frames 0, 1, 6 as follows:

If the bit value of the UL-index or the UL-DAI is “00”, the current TDD UL / DL configuration is Group 2, ie, TDD UL / DL configurations 1, 2, 3, 4, or 5;

When the bit value of the UL-index or the UL-DAI is “01”, “10” or “11”, the current TDD UL / DL configuration is group 1, that is, TDD UL / DL configuration 0; Such three bit values have the same definitions as in LTE and LTE-A, indicating that the uplink sub-frames are scheduled;

(3) when detecting an UL-grant in sub-frames 0, 1, or 6, it is determined based on (2) which group the TDD UL / DL configurations belong to in the cell; If the UL-grant is detected in sub-frames 3, 4, 8, 9, it is determined as group 2; if the UL-grant is detected in sub-frame 5, it is determined as group 1, LTE and LTE-A Receive a UL-index or a UL-DAI at a UL-index according to a TDD UL / DL configuration 0 in S;

For group 1, the above definition of the synchronous HARQ timing relationship of a PUSCH is defined in configuration 0 in Tables 2 and 3 of the prior art portion of the synchronous HARQ timing relationship of the PUSCH of configuration 0 in LTE and LTE-A. Same as definition. For group 2, when determining the UL-grant in sub-frame n, the scheduled PUSCH is transmitted in sub-frame n + k, and synchronous transmission of HARQ is delivered in HARQ RTT of 10 ms, i.e., PHICH is sub- It is received at frame n + 10. If non-adaptive retransmission occurs for PUSCH, the UE will transmit the mth non-adaptive retransmission in sub-frame n + 10 × m + k and in sub-frame n + 10 × (m + 1). At the m th retransmissions we will receive the PHICH, where k is as shown in Table 4, where 1 ≦ m ≦ M, M is the maximum number of retransmissions defined by the system.

Step 403: The UE transmits a PUSCH and receives a PHICH based on a synchronous HARQ timing relationship of the PUSCH defined in step 302.

Here, the HARQ process in which the PUSCH is changed before and after configuring the TDD according to the method of the present invention may be the same HARQ process or different HARQ processes.

For example, if the UL-grant is detected in sub-frame 6, and if the bit value of the UL-index or the UL-DAI in the UL-grant is "00", the UE determines that the TDD UL / DL configuration is Group 2 And transmit a PUSCH in the sub-frame (6 + 6), ie, the sub-frame # 2 of the next frame based on Table 4, and receive the PHICH in the sub-frame (6 + 10). If the PHICH provides a NACK as feedback, the first retransmission will be transmitted as in sub-frame (6 + 10 + 6) or the like as shown in FIG.

If the UL-grant is detected in sub-frame 6, and if the bit value of the UL-index or UL-DAI in the UL-grant is "10", the UE determines that the TDD UL / DL configuration is Group 1, and FIG. As illustrated in FIG. 5, the PUSCH will be transmitted based on the synchronous HARQ timing relationship of the PUSCH of configuration 0 in LTE and LTE-A, and will receive a PHICH.

Upon detecting the UL-Grant in sub-frame 8, the UE will determine that the TDD UL / DL configuration is Group 2, and will transmit a PUSCH in sub-frame (8 + 4), based on Table 4 Receive PHICH in frame 8 + 10. If the PHICH provides NACK as feedback, the first retransmission will be transmitted as in sub-frame (8 + 10 + 4) or the like as shown in FIG.

In addition, another solution according to the present invention may be implemented as the following application method 2:

The seven TDD UL / DL configurations defined in LTE and LTE-A are grouped in option A, where the groups are located at the location of the UL-grant or the bit value of the UL-index or UL-DAI of the UL-grant or Is determined based on the combination. If a PUSCH RTT period and configuration 6 other than 10ms are used, the PUSCH of configuration 6 will be scheduled by the synchronous HARQ timing relationship of configuration 0, and the PUSCH will not be scheduled in sub-frame 9, in particular as follows:

Step 501: Grouping in Option A, i.e .:

Group 1: TDD UL / DL configuration 0, 6;

Group 2: TDD UL / DL configuration 1, 2, 3, 4, 5;

Step 502: The groups are determined according to the method of Method 1 above.

In the case of Group 2, the synchronous HARQ timing relationship of the PUSCH is determined using the same manner as in the embodiment as described above.

In the case of group 1, the UE detects a UL-grant or PHICH in subframes 0, 1, and 6, or a UL-grant with UL-index ≠ 00 in sub-frame 5 or a _PHICH with I _PHICH = 0. And the timing relationship from UL-Grant or PHICH to PUSCH is determined in LTE and LTE-A as shown in sub-frames 0, 1, 5, 6 of configuration 0 of Table 2 of the prior art section. The same as the timing relationship from the UL-grant or PHICH to PUSCH of configuration 0.

When the UE detects a PHICH with I _PHICH = 1 in sub-frame 5, the UE transmits a PUSCH in sub-frame 9 of the last frame, which PHICH is a PUSCH ACK / NACK of the sub-frame 9 of the last frame. Considered as an indication, the scheduled PUSCH will be transmitted in sub-frame 2 of the next frame. If the UE did not transmit the PUSCH in the sub-frame 9 of the last frame, it will transmit the scheduled PUSCH in the sub-frame 2 of the next frame;

When the UE detects a UL-grant with UL-index = 00 in sub-frame 5, it is considered which scheduling is currently scheduling the PUSCH of sub-frame 8 of the last frame, and the UE is new to the UL-grant. The PUSCH of sub-frame 8 of the last frame must be retransmitted or transmitted according to a New Data Indication (NDI) value.

Further, the timing relationships of PHICH from PUSCH of all uplink sub-frames are the same as the timing relationship of PHICH from PUSCH of configuration 0 in LTE and LTE-A, as shown in configuration 0 of Table 2 of the prior art portion. . The UE must be listening to PDCCCH in sub-frame 9;

For group 1 and also for eNB, in TDD UL / DL configuration 6, the I _PHICH of PHICH of uplink sub-frame 8 of the last frame is present in sub-frame 5 by the eNB and must be set to 1 The UL-index of the UL-grant of the uplink sub-frame 8 of the last frame is transmitted in sub-frame 5 and must be set to "00". In addition, the eNB may transmit downlink data in sub-frame 9.

Step 503: Same as step 403 of the application scheme 1.

As an example, for TDD UL / DL configuration 6, the UE detects “01” of the UL-index of the UL-grant in sub-frame 1, and then the UE then PSUCH from the UL-grant of TDD UL / DL configuration 0. The PUSCH is transmitted based on the timing relationship in the. Here, the I _PHICH may only be equal to “1”, and this PUSCH will be scheduled in sub-frame 2 of the next frame as shown in FIG. 7.

In addition, another solution according to the present invention may be implemented as the following application method 3:

Step 601: Grouping in Option B, i.e .:

Group 1: TDD UL / DL configuration 0;

Group 2: TDD UL / DL configuration 6;

Group 3: TDD UL / DL configuration 1, 2, 3, 4, 5;

Step 602: A new DCI format is defined based on DCI format 0 in LTE and LTE-A, and the new DCI format is to add two bits to all DCI format 0 (hereinafter referred to as “new bits”). . The groups are indicated using the values of the new bits, for example "00" indicates group 1, "01" indicates group 2, and "10" indicates group 3. The current grouping is determined using the bit value of the newly defined DCI. In the case of Group 1 or Group 2, the synchronous HARQ timing relationship of the PUSCH is determined in the same manner as that of the Group 2 of the application scheme.

Step 603: Same as step 403 of the application scheme 1.

In addition, another solution according to the present invention can be implemented as the following application method 4:

The seven TDD UL / DL configurations in LTE and LTE-A are grouped using option B. The UE detects the PDCCH with the UL-grant in downlink sub-frames with the possible UL-grant. If the UL-grant is present in sub-frames # 0, # 1, # 5, # 6, # 9, the synchronous HARQ timing relationship of the PUSHC to be scheduled depends on the TPC value and the position of the UL-grant in the UL-grant. If determined based on the UL-grant in other sub-frames, the synchronous HARQ timing relationship of the PUSHC to be scheduled is determined based on the sub-frame position of the UL-grant and has the following specific steps:

Step 701: Grouping in Option B, i.e .:

Group 1: TDD UL / DL configuration 0;

Group 2: TDD UL / DL configuration 6;

Group 3: TDD UL / DL Configurations 1, 2, 3, 4, 5.

Step 702: The UE detects the PDCCH in possible sub-frames in uplink scheduling to obtain a UL-grant, where the possible sub-frames in uplink scheduling are # 0, # 1, # 3, # 4, # 5, # 6, # 8, # 9. If the UL-grant is present in sub-frames # 0, # 1, # 5, # 6, # 9, the synchronous HARQ timing relationship of the PUSCH to be scheduled is based on the TPC value of the UL-grant and the position of the UL-grant. If the UL-grant is present in other sub-frames, that is, # 3, # 4, or # 8, the synchronous HARQ timing relationship of the PUSCH to be scheduled is determined based on the sub-frame position of the UL-grant. And has the following specific steps:

(1) the specific sub-step of step 403 (1)

(2) define the relationship between the TPC bit and configuration groups of the UL-grant in sub-frames 0,1,5,6,9, for example,

“00” corresponds to group 1, “01” corresponds to group 2, and “10” corresponds to group 3.

(3) When the UE detects that the UL-grant is present in sub-frames # 0, # 1, # 5, # 6, and # 9, the above-mentioned group indicates which group the TDD UL / DL configuration belongs to. Determined based on (2) as described; If the UE determines the UL-grant in sub-frames # 3, # 4, # 8, it is TDD UL / DL configuration 3.

(4) For Group 1 and Group 2, the synchronous HARQ timing relationship of the PUSCH is shown in Configuration 0 and Configuration 6 of Tables 2 and 3 of the prior art section, and the PUSCH of Configuration 0 in LTE and LTE-A. Is equal to the synchronous HARQ timing relationship. For group 3, when the UE detects an UL-grant in sub-frame n, the PUSCH to be scheduled is transmitted in sub-frame n + k, and the synchronous transmission of HARQ is delivered in HARQ RTT of 10 ms, i.e., PHICH is Received in sub-frame n + 10. If non-adaptive retransmission occurs for PUSCH, the UE will transmit the mth non-adaptive retransmission in sub-frame n + 10 × m + k and in sub-frame n + 10 × (m + 1). At the m th retransmissions we will receive the PHICH, where k is as shown in Table 4, where 1 ≦ m ≦ M, M is the maximum number of retransmissions defined by the system.

Step 703: Same as step 403 of the application scheme 1.

In addition, another solution according to the present invention may be implemented as the following application scheme 5.

In the space of TDD UL / DL configuration 0, configuration 6 is used in the PUSCH RTT period rather than 10ms for compatibility of the system. The UE detects the PDCCH with the UL-grant in downlink sub-frames with the possible UL-grant. If the UL-grant is present in sub-frames # 0, # 1, # 5, # 6, # 9, the synchronous HARQ timing relationship of the PUSHC to be scheduled is the value of the UL-DAI in the UL-grant and of the UL-grant If the location is determined based on the UL-grant in other sub-frames, the synchronous HARQ timing relationship of the PUSHC to be scheduled is determined based on the sub-frame location of the UL-grant, and the following specific steps are taken. Has:

Step 801: Grouping in Option D, i.e .:

Group 1: TDD UL / DL configuration 6;

Group 3: TDD UL / DL Configurations 1, 2, 3, 4, 5.

Step 802: The UE detects the PDCCH in possible sub-frames in uplink scheduling to obtain a UL-grant, where the possible sub-frames in uplink scheduling are # 0, # 1, # 3, # 4, # 5, # 6, # 8, # 9. If an UL-grant is present in sub-frames # 0, # 1, # 6, # 9, the synchronous HARQ timing relationship of the PUSCH to be scheduled is based on the UL-DAI value of the UL-grant and the position of the UL-grant. If the UL-grant is present in other sub-frames, i.e., # 3, # 4, # 5 or # 8, then the synchronous HARQ timing relationship of the PUSCH to be scheduled is based on the sub-frame location of the UL-grant. Has been determined and has the following specific steps:

(1) the specific sub-step of step 403 (1)

(2) Redefine the meaning of UL-DAI of UL-Grant in sub-frames 0,1,6,9 as follows:

When the bit value of the UL-DAI is “00”, “01” or “10”, group 2, that is, TDD UL / DL configurations 1, 2, 3, 4 or 5; The three bit values as described above have the same definition as the definitions in LTE and LTE-A, and of the downlink sub-frames to be scheduled in the downlink sub-frames associated with the uplink sub-frames to be scheduled. Indicates the number:

Bit value of UL-DAI The values 0.0 1, 4 or 7 0,1 2, 5 or 8 1,0 3, 6 or 9

Table 5: Specific values corresponding to bit values of UL-DAI

If the bit value of the UL-DAI is “11”, it is group 1, that is, TDD UL / DL configuration 6.

(3) When the UE detects a UL-grant in sub-frames 0, 1, 6 or 9, which group the TDD UL / DL configurations belong to in the cell depends on (2) as described above. Is determined on the basis of If the UL-grant is in sub-frames 3, 4, 8, it is group 2, and if the UL- grant is in sub-frame 5, it is group 1.

(4) For Group 1, the synchronous HARQ timing relationship of the PUSCH is as shown in the configuration 0 of Table 2 and Table 3 of the prior art portion, and the synchronous HARQ timing relationship of the PUSCH of configuration 6 in LTE and LTE-A. same. For group 2, when the UE detects an UL-grant in sub-frame n, the PUSCH to be scheduled is transmitted in sub-frame n + k, and the synchronous transmission of HARQ is delivered in HARQ RTT of 10 ms, i.e., PHICH is Received in sub-frame n + 10. If non-adaptive retransmission occurs for PUSCH, the UE will transmit the mth non-adaptive retransmission in sub-frame n + 10 × m + k and in sub-frame n + 10 × (m + 1). At the m th retransmissions we will receive the PHICH, where k is as shown in Table 4, where 1 ≦ m ≦ M, M is the maximum number of retransmissions defined by the system.

Step 803: Same as step 403 of the application scheme 1.

In addition, another solution according to the present invention may be implemented as the following application method 6:

Step 901: Grouping in Option D, i.e .:

Group 1: TDD UL / DL configuration 6;

Group 3: TDD UL / DL Configurations 1, 2, 3, 4, 5.

Step 902: A new DCI format is defined based on DCI format 0 in LTE and LTE-A, and the new DCI format is to add one bit to every DCI format 0 (hereinafter referred to as “new bit”). The groups are indicated using the value of the new bit, for example, "0" indicates group 1 and "1" indicates group 2. The current grouping is determined using the bit value of the new bits of the newly defined DCI. In case of Group 1, the synchronous HARQ timing relationship of PUSCH is the same as the synchronous HARQ timing relationship of PUSCH of TDD UL / DL configuration 6 of LTE and LTE-A. In the case of group 2, the synchronous HARQ timing relationship of the PUSCH is determined in the same manner as that in the group 2 of the application scheme.

Step 903: Same as step 403 of the application scheme 1.

In the technical solution of the present invention, 7 TDD UL / DL configurations defined in the existing LTE / LTE-A are grouped based on the period of the round trip time (RTT) or other criterion of the PUSCH. the eNB schedules the PUSCH via signaling, the average time indicating the current grouping information for the UE; The UE determines the scheduled synchronous HARQ timing relationship of the PUSCH with reference to the synchronous HARQ timing relationship of the PUSCH of the TDD UL / DL configurations included in the group. Information of the existing seven UL / DL configurations exists to indicate only the UE to the synchronous HARQ timing relationship of the PUSCH, and does not limit the operation of the UL / DL sub-frames in the current system. The UE obtains information about grouping of current TDD UL / DL configurations by scheduling of PUSCH and signaling sent by eNB, and UL / DL sub-frames of current TDD UL / DL configurations in the system are Although different from any of the UL / DL sub-frames, the UE is a synchronous HARQ timing relationship of the PUSCH of the TDD UL / DL configurations included in the group and a synchronous HARQ of the PUSCH to be scheduled based on the method of the present invention. The timing relationship can be determined.

It is well known to those skilled in the art that all steps or portions of the method as described above can be implemented through programs that instruct relevant hardware. The program may be stored on a computer readable medium, and when executed, may include any one of the steps of the method of the embodiments or a combination thereof.

In addition, the individual functional units in the various embodiments of the present invention may be integrated in a processing module, physically present as a single unit, or may be implemented in a single module via two or more units. Can be. The integrated modules may be implemented in hardware or in software function modules. The integrated module may be implemented in a software function module and stored in a computer readable storage medium when sold or used as separate products.

The storage medium as described above may be a ROM, a disk or CDs.

The above description is only a part of the embodiments of the present invention. Those skilled in the art can make various modifications and changes without departing from the principles of the present invention, and such modifications and changes fall within the scope of rights which should be protected by the present invention.

Claims (30)

A method for performing uplink scheduling by an evolved Node B (eNB) in a wireless communication system,
Transmitting signaling information including synchronous HARQ (Hybrid Automatic Repeat Request) timing information of an uplink physical uplink shared channel (PUSCH) to a user equipment (UE);
Receiving PUSCH information sent by the UE;
And wherein the timing information is determined based on information of the grouping of the uplink and downlink configurations.
The method of claim 1,
The grouping of the uplink and downlink configurations,
Uplink scheduling method characterized in that the grouping based on the periodic characteristics of the PUSCH Round Trip Time (PUSCH RTT) of the Time Division Duplex (TDD) uplink and downlink configurations.
3. The method of claim 2,
Grouping the uplink and downlink configurations is:
Option A: Seven TDD uplink and downlink configurations comprising TDD uplink and downlink configurations 1, 2, 3, 4, 5 with an RTT of 10 ms based on the period of the RTT of the PUSCH. Grouping into a first group and a second group containing TDD uplink and downlink configurations 0,6 with an RTT other than 10 ms;
Option B: First group of 7 TDD uplink and downlink configurations comprising TDD uplink and downlink configurations 1, 2, 3, 4, 5 with an RTT of 10 ms based on the period of the RTT of the PUSCH Grouping into a second group comprising a TDD uplink and downlink configuration 0 with a RTT other than 10 ms and a third group including a TDD uplink and downlink configuration 6 with a RTT other than 10 ms;
Option C: first group of seven TDD uplink and downlink configurations comprising TDD uplink and downlink configurations 1, 2, 3, 4, 5 with an RTT of 10 ms based on the period of the RTT of the PUSCH Grouping into a second group comprising a TDD uplink and downlink configuration 0 with an RTT other than 10 ms,
Option D: first group of seven TDD uplink and downlink configurations comprising TDD uplink and downlink configurations 1, 2, 3, 4, 5 with an RTT of 10 ms based on the period of the RTT of the PUSCH And grouping into a second group including a TDD uplink and downlink configuration 6 having an RTT other than 10 ms.
The method of claim 3,
The UE includes:
And determine the PUSCH synchronized HARQ timing of the scheduled PUSCH according to the synchronized PUSCH HARQ timing of the TDD UL / DL configurations in the groups determined to be one of the options A to D.
The method of claim 3,
The grouping of the configurations is indicated based on bit values in the UL-Index or UL-Uplink Downlink Assignment Index (UL-DAI) of the UL-Grant in sub-frames 0, 1, 6 Uplink scheduling method further comprising the step of.
5. The method of claim 4,
For option A, B or C above:
When the bit value is "00", it indicates that the group according to the current TDD uplink and downlink configuration is the first group.
When the bit value is "01", "10" or "11", it indicates that the group according to the current TDD uplink and downlink configuration is the second group,
For option D above:
When the bit value is "01", "01", or "10", it indicates that the group according to the current TDD uplink and downlink configuration is the first group.
If the bit value is "11", the uplink scheduling method characterized in that the group according to the current TDD uplink and downlink configuration is the second group.
The method of claim 3,
And indicating the grouping information using 2 bits corresponding to a TPC command in Downlink Control Information (DCI) format 0.
The method of claim 3,
And defining a DCI format having 2 bits in DCI format 0 to indicate the groups.
A method for performing uplink scheduling by a user equipment (UE) in a wireless communication system,
receiving signaling information including synchronous HARQ (Hybrid Automatic Repeat Request) timing information of an uplink physical shared channel (PUSCH) transmitted by an evolved Node B (eNB); ,
Transmitting PUSCH information to the eNB;
The synchronous HARQ timing information is determined based on the information of the grouping of the uplink and downlink configurations.
10. The method of claim 9,
The grouping of the uplink and downlink configurations,
Uplink scheduling method characterized in that the grouping based on the periodic characteristics of the PUSCH Round Trip Time (PUSCH RTT) of the TDD uplink and downlink configurations.
The method of claim 10,
Grouping the uplink and downlink configurations is:
Option A: Seven TDD uplink and downlink configurations comprising TDD uplink and downlink configurations 1, 2, 3, 4, 5 with an RTT of 10 ms based on the period of the RTT of the PUSCH. Grouping into a first group and a second group containing TDD uplink and downlink configurations 0,6 with an RTT other than 10 ms;
Option B: First group of 7 TDD uplink and downlink configurations comprising TDD uplink and downlink configurations 1, 2, 3, 4, 5 with an RTT of 10 ms based on the period of the RTT of the PUSCH Grouping into a second group comprising a TDD uplink and downlink configuration 0 with a RTT other than 10 ms and a third group including a TDD uplink and downlink configuration 6 with a RTT other than 10 ms;
Option C: first group of seven TDD uplink and downlink configurations comprising TDD uplink and downlink configurations 1, 2, 3, 4, 5 with an RTT of 10 ms based on the period of the RTT of the PUSCH Grouping into a second group comprising a TDD uplink and downlink configuration 0 with an RTT other than 10 ms,
Option D: first group of seven TDD uplink and downlink configurations comprising TDD uplink and downlink configurations 1, 2, 3, 4, 5 with an RTT of 10 ms based on the period of the RTT of the PUSCH And grouping into a second group including a TDD uplink and downlink configuration 6 having an RTT other than 10 ms.
12. The method of claim 11,
Uplink scheduling method further comprising the step of obtaining the grouping information based on the bit value in the UL-Index or UL-Uplink Downlink Assignment Index (UL-Grant) of the UL-Grant. .
The method of claim 12,
For option A, B or C above:
If the bit value is "00", it indicates that the group for the current TDD uplink and downlink configuration is the first group,
If the bit value is "01", "10" or "11", it indicates that the group for the current TDD uplink and downlink configuration is the second group,
For option D above:
If the bit value is "01", "01" or "10", it indicates that the group for the current TDD uplink and downlink configuration is the first group,
If the bit value is "11", the uplink scheduling method characterized in that the group for the current TDD uplink and downlink configuration is the second group.
12. The method of claim 11,
The eNB,
Uplink scheduling method characterized by indicating the grouping information using 2 bits corresponding to a TPC command in Downlink Control Information (DCI) format 0.
12. The method of claim 11,
Receiving the information transmitted by the eNB, and determining the grouping information based on the two bits defined in DCI format 0.
In an evolved Node B (eNB) performing uplink scheduling in a wireless communication system,
A transceiver for transmitting and receiving data through a wireless network,
Transmitting signaling information including synchronous HARQ timing information of an uplink physical shared channel (PUSCH) to a UE and transmitting the signaling information including the synchronous HARQ timing information It includes a control unit for controlling the operation of receiving the PUSCH information transmitted by the UE,
The timing information is determined based on information of the grouping of the uplink and downlink configurations.
17. The method of claim 16,
The control unit,
And grouping the uplink and downlink configurations based on periodic characteristics of a PUSCH Round Trip Ttime (PUSCH RTT) of time division duplex (TDD) uplink and downlink configurations.
18. The method of claim 17,
Grouping the uplink and downlink configurations is:
Option A: Seven TDD uplink and downlink configurations comprising TDD uplink and downlink configurations 1, 2, 3, 4, 5 with an RTT of 10 ms based on the period of the RTT of the PUSCH. Grouping into a first group and a second group containing TDD uplink and downlink configurations 0,6 with an RTT other than 10 ms;
Option B: First group of 7 TDD uplink and downlink configurations comprising TDD uplink and downlink configurations 1, 2, 3, 4, 5 with an RTT of 10 ms based on the period of the RTT of the PUSCH Grouping into a second group comprising a TDD uplink and downlink configuration 0 with a RTT other than 10 ms and a third group including a TDD uplink and downlink configuration 6 with a RTT other than 10 ms;
Option C: first group of seven TDD uplink and downlink configurations comprising TDD uplink and downlink configurations 1, 2, 3, 4, 5 with an RTT of 10 ms based on the period of the RTT of the PUSCH Grouping into a second group comprising a TDD uplink and downlink configuration 0 with an RTT other than 10 ms,
Option D: first group of seven TDD uplink and downlink configurations comprising TDD uplink and downlink configurations 1, 2, 3, 4, 5 with an RTT of 10 ms based on the period of the RTT of the PUSCH And grouping into a second group including a TDD uplink and downlink configuration 6 having an RTT other than 10 ms.
19. The method of claim 18,
The UE includes:
And determine the PUSCH synchronized HARQ timing of the scheduled PUSCH according to the synchronized PUSCH HARQ timing of the TDD UL / DL configurations in the groups determined to be one of the options A to D.
19. The method of claim 18,
The control unit,
The grouping of the configurations is indicated based on bit values in the UL-Index or UL-Uplink Downlink Assignment Index (UL-DAI) of the UL-Grant in sub-frames 0, 1, 6 ENB characterized in that.
20. The method of claim 19,
For option A, B or C above:
When the bit value is "00", it indicates that the group according to the current TDD uplink and downlink configuration is the first group.
When the bit value is "01", "10" or "11", it indicates that the group according to the current TDD uplink and downlink configuration is the second group,
For option D above:
When the bit value is "01", "01", or "10", it indicates that the group according to the current TDD uplink and downlink configuration is the first group.
If the bit value is "11", eNB indicates that the group according to the current TDD uplink and downlink configuration is the second group.
19. The method of claim 18,
The control unit,
ENB indicates the grouping information using 2 bits corresponding to a transmit power control (TPC) command in downlink control information (DCI) format 0.
19. The method of claim 18,
The control unit,
ENB defines a DCI format having 2 bits in DCI format 0 to indicate the groups.
In a user equipment (UE) for performing uplink scheduling in a wireless communication system,
A transceiver for transmitting and receiving data through a wireless network,
Receive signaling information including synchronous HARQ (Hybrid Automatic Repeat request) timing information of an uplink physical shared channel (PUSCH) transmitted by an evolved Node B (eNB), and a control unit for controlling an operation of transmitting PUSCH information to an eNB;
The synchronous HARQ timing information is determined based on the information of the grouping of the uplink and downlink configurations.
25. The method of claim 24,
The control unit,
And grouping the uplink and downlink configurations based on periodic characteristics of a PUSCH Round Trip Time (PUSCH RTT) of TDD uplink and downlink configurations.
26. The method of claim 25,
Grouping the uplink and downlink configurations is:
Option A: Seven TDD uplink and downlink configurations comprising TDD uplink and downlink configurations 1, 2, 3, 4, 5 with an RTT of 10 ms based on the period of the RTT of the PUSCH. Grouping into a first group and a second group containing TDD uplink and downlink configurations 0,6 with an RTT other than 10 ms;
Option B: First group of 7 TDD uplink and downlink configurations comprising TDD uplink and downlink configurations 1, 2, 3, 4, 5 with an RTT of 10 ms based on the period of the RTT of the PUSCH Grouping into a second group comprising a TDD uplink and downlink configuration 0 with a RTT other than 10 ms and a third group including a TDD uplink and downlink configuration 6 with a RTT other than 10 ms;
Option C: first group of seven TDD uplink and downlink configurations comprising TDD uplink and downlink configurations 1, 2, 3, 4, 5 with an RTT of 10 ms based on the period of the RTT of the PUSCH Grouping into a second group comprising a TDD uplink and downlink configuration 0 with an RTT other than 10 ms,
Option D: first group of seven TDD uplink and downlink configurations comprising TDD uplink and downlink configurations 1, 2, 3, 4, 5 with an RTT of 10 ms based on the period of the RTT of the PUSCH And grouping into a second group including a TDD uplink and downlink configuration 6 having an RTT other than 10 ms.
The method of claim 26,
The control unit,
And receiving the grouping information based on the bit value in a UL-Index or a UL-Uplink Downlink Assignment Index (UL-DAI) of a UL-Grant.
28. The method of claim 27,
For option A, B or C above:
If the bit value is "00", it indicates that the group for the current TDD uplink and downlink configuration is the first group,
If the bit value is "01", "10" or "11", it indicates that the group for the current TDD uplink and downlink configuration is the second group,
For option D above:
If the bit value is "01", "01" or "10", it indicates that the group for the current TDD uplink and downlink configuration is the first group,
If the bit value is “11”, it indicates that the group for the current TDD uplink and downlink configuration is the second group.
The method of claim 26,
The control unit,
UE indicating the grouping information using 2 bits corresponding to a transmit power control (TPC) command in downlink control information (DCI) format 0.
The method of claim 26,
The control unit,
And recognize through the transceiver that the information transmitted by the eNB is received, and determine the grouping information based on the two bits defined in DCI format 0.

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