WO2015062276A1

WO2015062276A1 - Transmission processing method and device for tti bundling, network-side device and ue

Info

Publication number: WO2015062276A1
Application number: PCT/CN2014/079527
Authority: WO
Inventors: 陈宪明; 戴博; 左志松; 夏树强
Original assignee: 中兴通讯股份有限公司
Priority date: 2013-11-01
Filing date: 2014-06-09
Publication date: 2015-05-07
Also published as: CN104618075B; CN104618075A

Abstract

Provided are a transmission processing method and device for a transmission time interval bundling, a network-side device and a user equipment. The method comprises: acquiring trigger information used for triggering a transmission mechanism which uses an enhanced transmission time interval bundling; and sending the trigger information to a user equipment (UE). By means of the technical solution provided in the present invention, the problem in the related art that expected coverage requirements cannot be satisfied because an uplink VoIP service is still a bottleneck of coverage due to the limitation to a UL link or the maximum transmission power of a UE is solved, thereby effectively enhancing the coverage performance of the uplink VoIP service.

Description

The present invention relates to the field of mobile communications, and in particular to a transmission time interval bundle (Transmission Time Interval Bundling) (TTI bundling) transmission processing method and device Network equipment, user equipment (User Equipment, UE for short). The radio access network of the Long-Term Evolution (LTE) system includes: a network side (enhanced Node B, evolved Node B (e B)) and a UE, where the network side The core network or other network is connected, and communicates with UEs located in cells served by the network side through a wireless interface. In order to improve the coverage of the Uplink (UL) Voice over Internet Protocol (VoIP) service, LTE introduces TTI bundling technology at the physical layer. The TTI bundling refers to a radio resource allocated by the scheduler to the UE for more than one transmission time interval. The basic idea is to allow the UE to continuously transmit different redundancy versions (RVs) of the same transport block using consecutive frames, and to use the above operation as one transmission attempt of the transport block. Note: Since ΤΉ and sub-frames are usually equivalent, the remainder of this article will no longer distinguish between the two. It is known that, in the case of enabling TTI bundling transmission, the total number of Hybrid Automatic Repeat Request (HARQ) processes is four; in addition, for VoIP services, the arrival interval or period of the transport block is usually 20ms or 20 subframes, and its air interface delay limit is usually set to approximately 50ms. Specifically, as shown in FIG. 1, the scheduler allocates a transmission block arrival interval of 20 ms for the UE by using an uplink grant of a Semi-Persistent Scheduling (SPS) type on the subframe 6 of the radio frame n-1. For periodic uplink subframe resources (ie, subframes 0 to 3 of radio frame n+k (k=0, 2, 4, 6, ...)), these periodic uplink subframe resources are respectively The first transmission attempt for each VoIP transport block. The transport block 0 utilizes the HARQ process 0 resource, and the first transmission attempt is performed within the range of the radio frame n subframes 0 to 3, if the corresponding downlink HARQ response is a negative non-acknowledgement (NACK) response, 2 transmission attempts are performed in the range of radio frame n+1 subframes 6 to 9, and so on, until the corresponding response is a positive Acknowledgement (ACK) response, or the maximum number of transmission attempts is reached 4 times. , transport block 0 terminates the transmission. Similarly, other transport blocks also implement TTI bundling transmissions in the manner described above using the specified HARQ process resources. In the downlink control information (Downlink Control Information, DCI) format of the existing LTE (A) system, the Modulation and Coding Scheme (MCS) field includes 5 bits, as shown in Table 1 below. The index I _MCS range is 0 to 31 (decimal). The indexes 0 to 28 are used to indicate the modulation order and the transport block size (Transport Block Size, referred to as TBS) index (the RV index is fixed to 0) under the first transmission of the HARQ, and the indexes 29 to 31 are used to indicate the HARQ. The RV index under the secondary retransmission (the modulation order and the TBS index are the same as the first pass). However, in the case of enabling ΤΉ bundling transmission, most of the above 32 (0 to 31) indexes are not used. For example, since TTI bundling transmission is mainly used for VoIP services (small payload), the modulation order of size 2 (Quadrature Phase Shift Keying (QPSK)) and smaller TBS The index is already sufficient, so that indexes 11 to 28 may not be used; in addition, since the size of ΤΉ bundling is 4 subframes, each bundling transmission (including the first transmission and the retransmission) takes an RV ranging from 0 to 3. The index will be traversed so that the indexes 29 to 31 dedicated to the HARQ retransmission RV index indication may never be used. Table 1

Cable bow 1 IMCS modulation order Q _M TBS cable ITBS RV cable bow 1 rv _idx

0 2 0 0

1 2 1 0

2 2 2 0

3 2 3 0

4 2 4 0

5 2 5 0

6 2 6 0

7 2 7 0

8 2 8 0

9 2 9 0

10 2 10 0

11 4 10 0

12 4 11 0

13 4 12 0

14 4 13 0

15 4 14 0

16 4 15 0

17 4 16 0

18 4 17 0

19 4 18 0

20 4 19 0 21 6 19 0

22 6 20 0

23 6 21 0

24 6 22 0

25 6 23 0

26 6 24 0

27 6 25 0

28 6 26 0

29 1

30 reserved 2

31 3 Existing research and evaluation results show that even if the above-mentioned ΤΉ bundling transmission technology is applied, the uplink VoIP service is still the bottleneck of coverage due to the limitation of the maximum transmission power of the UL link or the UE, which cannot meet the desired coverage requirement. . A complete solution has not yet been proposed for how to continue to improve the coverage performance of uplink VoIP services. In view of the above problems in the related art, an effective solution has not yet been proposed. SUMMARY OF THE INVENTION In the related art, an embodiment of the present invention provides a transmission time interval, because the uplink VoIP service is still a bottleneck of coverage and cannot meet the required coverage requirement. The bundled transmission processing method and apparatus, the network side device, and the user equipment are to solve at least the above problems. According to an embodiment of the present invention, a transmission processing method for transmitting time interval bundles is provided, including: acquiring trigger information for triggering an enhanced transmission time interval bundle transmission mechanism; and transmitting the trigger message to a UE. Preferably, the trigger information includes: an uplink grant MCS field in a DCI format. Preferably, the trigger information further includes: a combination of an MCS field in an uplink grant DCI format and a Resource Allocation (RA) field. Preferably, the foregoing method includes: when the decimal index represented by the MCS field is equal to a minimum value, and the decimal index represented by the RA field is equal to a maximum value, the enhanced transmission time interval bundling transmission mechanism is triggered. Preferably, the enhanced transmission mechanism includes at least one of the following: an enhanced hybrid automatic repeat request HARQ operation, and a borrowing process of the HARQ process resource. Preferably, the enhanced HARQ operation includes: setting a Round-Trip Time (RTT) to 12 ms; and/or the borrowing process of the foregoing HARQ process resource includes one of the following: a borrowing process of the persistent HARQ process resource. The borrowing process of semi-persistent HARQ process resources and the borrowing process of dynamic HARQ process resources. Preferably, the borrowing process of the foregoing persistent HARQ process resource includes: for all consecutive network telephony VoIP transport blocks, the first HARQ process resource located after the first transmission attempt HARQ process resource is borrowed by the VoIP transport block; the semi-persistent HARQ process The borrowing process of the resource includes: For at least one consecutive VoIP transport block, the first HARQ process resource located after the first transmission attempt HARQ process resource is borrowed by the VoIP transport block; the borrowing process of the dynamic HARQ process resource includes: The VoIP transport block, the Xth HARQ process resource located after the first transmission attempt HARQ process resource or the retransmission attempt HARQ process resource is borrowed by the VoIP transport block, where X takes values from one of the following: 1, 2, 3. Preferably, when the borrowing process of the semi-persistent HARQ process resource is triggered by using the foregoing MCS field, the number of consecutive transmission blocks continued by the semi-persistent HARQ process resource borrowing process is determined by one of the following manners: determining according to an index represented by the MCS field. ; pre-setting. Preferably, when the foregoing MCS field is used to trigger the borrowing process of the persistent HARQ process resource, the MCS field is further used to close the borrowing process of the persistent HARQ process resource. Preferably, when the enhanced HARQ operation, the borrowing process of the persistent HARQ process resource, and the borrowing process of the dynamic HARQ process resource are used, and the decimal index represented by the MCS field is one of the following, the enhanced transmission is indicated. The time interval bundling transmission mechanism is triggered: 29, 30, 31; in the case of the borrowing process using the semi-persistent HARQ process resource, and the decimal index indicated by the MCS field is the following value, indicating an enhanced transmission time interval The bundle transfer mechanism is triggered: The value of the index value is greater than 10. Preferably, for the enhanced HARQ operation, the borrowing process of the persistent HARQ process resource, and the borrowing process of the semi-persistent HARQ process resource, the MCS field is transmitted in a fourth subframe before the arrival time of the transport block 0, where The transport block 0 is the first transport block that enables the enhanced transmission time interval bundling transmission mechanism; for the borrowing process of the dynamic HARQ process resource, the MCS field is in the first transport attempt of the designated transport block or the retransmission attempt HARQ process resource The transmission is performed on the first subframe, wherein the designated transport block is a transport block that enables the enhanced transmission time interval bundling transmission mechanism. According to another embodiment of the present invention, a transmission processing method for transmitting time interval bundles is provided, including: receiving, by a user equipment UE, trigger information from a network side device for triggering an enhanced transmission time interval bundle transmission mechanism; Under the triggering of the trigger information, the UE performs uplink transmission by using the enhanced transmission time interval bundling transmission mechanism. Preferably, the trigger information includes: a modulation coding scheme in a DCI format for granting downlink control information in an uplink.

MCS field. Preferably, the trigger information further includes: a combination of an MCS field in the uplink grant DCI format and a resource allocation RA field. Preferably, when the decimal index represented by the MCS field is equal to the minimum value, and the decimal index represented by the RA field is equal to the maximum value, the enhanced transmission time interval bundle transmission mechanism is triggered. Preferably, the enhanced transmission time interval bundling transmission mechanism includes at least one of the following: an enhanced hybrid automatic repeat request HARQ operation, and a borrowing process of the HARQ process resource. Preferably, the foregoing enhanced HARQ operation comprises: setting a HARQ RTT to 12 ms; and/or the borrowing process of the foregoing HARQ process resource includes one of the following: a borrowing process of persistent HARQ process resources, a borrowing process of semi-persistent HARQ process resources, dynamic HARQ The process of borrowing process resources. According to still another embodiment of the present invention, a transmission processing apparatus for transmitting time interval bundling is provided, which is applied to a network side device, and includes: an obtaining module configured to acquire a trigger for triggering an enhanced transmission time interval bundle transmission mechanism The sending module is configured to send the trigger message to the user equipment UE. Preferably, the acquiring module is configured to acquire the trigger information when the trigger information includes the following content: an uplink granting a modulation coding scheme MCS field in a downlink control information DCI format. Preferably, the acquiring module is further configured to acquire the trigger information when the trigger information includes the following content: the combination of the MCS field in the uplink grant DCI format and the resource allocation RA field. Preferably, the acquiring module is configured to obtain the trigger information when the enhanced transmission time interval bundling transmission mechanism comprises at least one of the following: an enhanced hybrid automatic repeat request HARQ operation, and a borrowing process of the HARQ process resource. According to still another embodiment of the present invention, a transmission processing apparatus for transmitting a time interval bundle is further provided, which is applied to a user terminal UE, and includes: a receiving module, configured to receive a trigger from a network side device for triggering an increase Strong transmission time interval triggering mechanism of the bundle transmission mechanism; the transmission module is configured to perform uplink transmission by using the enhanced transmission time interval bundle transmission mechanism triggered by the trigger information. Preferably, the receiving module is configured to receive the trigger information when the trigger information includes the following information: an uplink granting a modulation coding scheme MCS field in a downlink control information DCI format. Preferably, the receiving module is further configured to receive the trigger information when the trigger information includes the following content: the combination of the MCS field in the uplink grant DCI format and the resource allocation RA field. Preferably, the receiving module is configured to receive the trigger information when the enhanced transmission time interval bundle transmission mechanism includes at least one of the following: an enhanced hybrid automatic repeat request HARQ operation, and a borrowing process of the HARQ process resource. According to still another embodiment of the present invention, there is further provided a network side device, comprising the transmission processing device of any of the above transmission time interval bundles. According to still another embodiment of the present invention, there is further provided a user equipment UE, including a transmission processing apparatus of any of the above transmission time interval bundles. According to the embodiment of the present invention, the triggering information for triggering the use of the enhanced transmission time interval bundle transmission mechanism is adopted; the technical solution of sending the trigger message to the UE is solved, and the related art is limited by the UL link or the UE. The maximum transmit power, uplink VoIP service is still the bottleneck of coverage, and can not meet the expected coverage requirements, thus effectively enhancing the coverage performance of uplink VoIP services. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of a transmission time interval bundling transmission principle according to the related art; FIG. 2 is a flowchart of a transmission processing method of transmission time interval bundling according to an embodiment of the present invention; FIG. 3 is a flowchart according to an embodiment of the present invention. A schematic diagram of triggering an enhanced HARQ operation by using an MCS field in an uplink grant DCI format; FIG. 4 is a schematic diagram of a borrowing process of triggering persistent HARQ process resources according to a preferred embodiment of the present invention; 5 is a schematic diagram of a borrowing process for triggering a semi-persistent HARQ process resource and determining a number of transport blocks for which the process continues, in accordance with a preferred embodiment of the present invention; FIG. 6 is a borrowing process for triggering dynamic HARQ process resources according to a preferred embodiment of the present invention. Schematic

7 is a schematic diagram of a borrowing process for triggering dynamic HARQ process resources according to a preferred embodiment of the present invention.

8 is another flowchart of a transmission processing method of transmission time interval bundling according to an embodiment of the present invention; FIG. 9 is a structural block diagram of a transmission processing apparatus for transmitting time interval bundling according to an embodiment of the present invention; Another structural block diagram of a transmission processing apparatus for transmitting time interval bundling according to an embodiment of the invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. 2 is a flow chart of a transmission processing method of transmission time interval bundling according to an embodiment of the present invention. As shown in FIG. 2, the method includes: Step S202 to Step S204, S202: Acquire trigger information for triggering an enhanced transmission time interval bundle transmission mechanism; In this step, the trigger information includes: uplink grant DCI format MCS field; uplink grants the combination of the MCS field and the RA field in the DCI format. For example, when the decimal index represented by the MCS field above is equal to the minimum value of 0, and the decimal index represented by the RA field is equal to the maximum value, the above-described enhanced transmission time interval bundling transmission mechanism is triggered. The above enhanced transmission time interval bundling transmission mechanism includes at least one of the following: enhanced HARQ operation,

The borrowing process of HARQ process resources.

S204: Send the trigger message to the UE. Through the execution of the above steps, when the MCS field in the uplink grant DCI format for triggering the use of the enhanced transmission time interval bundle transmission mechanism (enhanced hybrid automatic repeat request HARQ operation or the borrowing process of the HARQ process resource) is acquired, The above trigger information is sent to the user. With such a technical solution, the uplink VoIP industry can be effectively solved due to the maximum transmit power limited by the UL link or the UE in the prior art. The service is still the bottleneck of coverage and cannot meet the expected coverage needs. It effectively enhances the coverage performance of uplink VoIP services and also avoids the large impact on higher layer protocols or specifications. In this embodiment, the foregoing enhanced HARQ operation includes: setting the HARQ RTT to 12 ms. A further improvement of the foregoing technical solution in the embodiment of the present invention is that the borrowing process of the foregoing HARQ process resource includes one of the following: a borrowing process of a persistent HARQ process resource, a borrowing process of a semi-persistent HARQ process resource, and a borrowing process of a dynamic HARQ process resource. The borrowing process of the persistent HARQ process resource may be expressed as the following implementation form: For all consecutive VoIP transport blocks, the first HARQ process resource located after the first transmission attempt HARQ process resource is borrowed by the VoIP transport block; the semi-persistent HARQ process The borrowing process of the resource may be expressed as the following implementation form: For at least one consecutive VoIP transport block, the first HARQ process resource located after the first transmission attempt HARQ process resource is borrowed by the VoIP transport block; the borrowing process of the dynamic HARQ process resource The following implementation forms may be implemented: For one VoIP transport block, the Xth HARQ process resource located after the first transmission attempt HARQ process resource or the retransmission attempt HARQ process resource is borrowed by the VoIP transport block, where the above X is from the following One of the values: 1, 2, 3. It should be noted that the above retransmission attempt refers to one transmission attempt among all other transmission attempts except the first transmission attempt during the actual operation. In the following two cases, the enhanced transmission time interval bundling transmission mechanism is triggered:

(1) In the case where the enhanced HARQ operation, the borrowing process of the persistent HARQ process resource, and the borrowing process of the dynamic HARQ process resource are used, and the decimal index indicated by the MCS field is one of the following: 29, 30, 31; (2) In the case of using the borrowing process of the semi-persistent HARQ process resource, and when the decimal index indicated by the MCS field is the following value: the index value is greater than 10. The further improvement of the foregoing technical solution in this embodiment is that, when the borrowing process of the semi-persistent HARQ process resource is triggered by using the MCS field, the MCS field is further used to determine the continuous number of consecutive transmission blocks of the semi-persistent HARQ process resource borrowing process, except In addition to the manner of determining the number of consecutive transmission blocks provided by the present embodiment, for the semi-persistent HARQ process resource borrowing process, the number of consecutive continuous transmission blocks may also determine the number of consecutive transmissions in a predetermined manner. The role of the above MCS field in this embodiment is not limited to the above functions. The MCS field is further configured to: when the borrowing process of the persistent HARQ process resource is triggered by using the MCS field, the MCS field is further A borrowing process for closing the persistent HARQ process resource. For example, when the decimal index indicated by the MCS field is not equal to 31, the borrowing process indicating that the persistent HARQ process resource is closed. A further improvement of the foregoing technical solution in this embodiment is that, in the foregoing enhanced HARQ operation, the borrowing process of the persistent HARQ process resource, and the borrowing process of the semi-persistent HARQ process resource, the foregoing MCS field is before the arrival time of the transport block 0 The transmission is performed on the four subframes, where the transport block 0 is the first transport block that enables the enhanced transmission time interval bundle transmission mechanism; for the borrowing process of the dynamic HARQ process resource, the MCS field is in the first transmission attempt of the designated transport block. Or retransmitting the transmission on the first subframe of the attempted HARQ process resource, wherein the designated transport block is a transport block that enables an enhanced transmission time interval bundle transmission mechanism. In order to better understand the above embodiments, the following detailed description will be given in conjunction with the preferred embodiments. It should be noted that the following preferred embodiments do not constitute a limitation of the present invention. Specifically, FIG. 3 is a schematic diagram of triggering an enhanced HARQ operation by using an MCS field in an uplink grant DCI format according to an embodiment of the present invention. Note: The pattern parameter in the figure represents the normal uplink grant, and the pattern ▲ represents the uplink grant used to trigger the enhanced HARQ operation. As shown in Figure 3: In the case of enabling ΤΉ bundling transmission, the enhanced HARQ operation is triggered by the MCS field in the uplink grant DCI format. For example, if the decimal index I _MCS indicated by the MCS field above is equal to 31, it indicates that the enhanced HARQ operation is triggered or enabled. Wherein, the above RTT refers to a duration interval from the start of one transmission attempt to the start of the next transmission attempt. Specifically, the uplink grant for triggering the enhanced HARQ operation is transmitted in the radio frame n-1 subframe 6, wherein the radio frame n-1 subframe 6 is located in the fourth subframe before the arrival time of the transport block 0, and is transmitted. Block 0 is the first transport block that enables enhanced HARQ operation. In the case of enhanced HARQ operation, with a delay limit of approximately 50 ms, transport block 0 can perform at most 5 transmission attempts, occupying 20 subframe resources. Similarly, other transport blocks 1 (>0) can also perform at most 5 transmission attempts. 4 is a schematic diagram of a borrowing process for triggering persistent HARQ process resources in accordance with a preferred embodiment of the present invention. As shown in FIG. 4, note: the pattern parameter in the figure indicates a normal uplink grant, and the pattern ▲ indicates an uplink grant for triggering a persistent HARQ process resource borrowing process. In the case of enabling TTI bundling transmission, the MCS field in the uplink grant DCI format is used to trigger the borrowing process of the persistent HARQ process resource. The borrowing process of the foregoing persistent HARQ process resource refers to: for all consecutive VoIP transport blocks, the first HARQ after the first transmission attempt HARQ process resource Process resources are borrowed by the transport block. For example, if the decimal index I _MCS indicated by the MCS field is equal to 31, the borrowing process indicating that the persistent HARQ process resource is triggered is triggered. Specifically, as shown in FIG. 4, the uplink grant for triggering the persistent HARQ process resource borrowing process is transmitted in the radio frame n-1 subframe 6, wherein the radio frame n-1 subframe 6 is before the transport block 0 arrival time. In the fourth subframe, transport block 0 is the first transport block that enables persistent HARQ process resource borrowing. Under normal circumstances, transport block 0 will not use the HARQ process 1 resource, but in the case of enabling the persistent HARQ process resource borrowing process, transport block 0 will use the first transport at transport block 0 in addition to the HARQ process 0 resource. The HARQ process 1 resource after the HARQ process 0 resource is tried, that is, the HARQ process 1 resource is borrowed by the transport block 0. Similarly, the HARQ Process 2 resource is borrowed by Transport Block 1, the HARQ Process 3 resource is borrowed by Transport Block 2, the HARQ Process 0 resource is borrowed by Transport Block 3, and so on. In addition, in the case of persistent HARQ process resource borrowing, the borrowing process of the above-mentioned persistent HARQ process resource may be closed by using the MCS field in the uplink grant DCI format. For example, if the index IMCS indicated by the MCS field is not equal to 31, the borrowing process indicating that the persistent HARQ process resource is closed is closed. 5 is a schematic diagram of a borrowing process for triggering a semi-persistent HARQ process resource and determining the number of transport blocks that are continued by the above process, in accordance with a preferred embodiment of the present invention. As shown in Figure 5, Note: The pattern "in the figure represents a normal uplink grant, and the pattern represents the uplink grant used to trigger the semi-persistent HARQ process resource borrowing process. In the case of enabling ΤΉ bundling transmission, the MCS field in the uplink grant DCI format is used to trigger the borrowing process of the semi-persistent HARQ process resource, and the number of consecutive transport blocks continued by the above process is determined. The above continuous continuous transmission block may also adopt a preset manner. The semi-persistent HARQ process resource borrowing process refers to: for at least one consecutive VoIP transport block, the first HARQ process resource located after the first transmission attempt HARQ process resource is borrowed by the transport block. For example, if the decimal index I _MCS indicated by the MCS field is greater than 10, the borrowing process indicating the semi-persistent HARQ process resource is triggered, and the number of consecutive transport blocks is indicated by the value of the specific decimal index I _MCS (as shown in Table 2 below). ). Taking the index I _MCS indicated by the above MCS field equal to 13 as an example, it indicates that the semi-persistent HARQ process resource borrowing process is triggered, and the number of consecutive continuous transmission blocks is three. Table 2

5 2 5 0

6 2 6 0

7 2 7 0

8 2 8 0

9 2 9 0

10 2 10 0

Semi-persistent HARQ process resource borrowing process continuous number of transport blocks

11 1

12 2

13 3

14 4

15 5

16 6

17 7

18 8

19 9

20 10

21 11

22 12

23 13

24 14

25 15

26 16

27 17

28 18

29 19

30 20

31 21

Specifically, as shown in FIG. 5, the uplink grant for enabling semi-persistent HARQ process resource borrowing is transmitted in the radio frame n-1 subframe 6, wherein the radio frame n-1 subframe 6 is the transport block 0 arrival time. In the previous 4th subframe, transport block 0 is the first of three consecutive transport blocks that enable semi-persistent HARQ process resource borrowing. Under normal circumstances, transport block 0 will not use the HARQ process 1 resource, but in the case of enabling the semi-persistent HARQ process resource borrowing process, transport block 0 will use the first transport at transport block 0 in addition to the HARQ process 0 resource. The HARQ process 1 resource after the HARQ process 0 resource is tried, that is, the HARQ process 1 resource is borrowed by the transport block 0. Similarly, the HARQ process 2 resource is borrowed by the transport block 1, and the HARQ process 3 resource is transported by the block. 2 borrowed. Since the number of consecutive transport blocks continued by the semi-persistent HARQ process resource borrowing process is set to three, the HARQ process 0 resource is no longer borrowed by the transport block 3. When the borrowing process of the dynamic HARQ process resource is triggered, the following two situations exist: In the case of enabling ΤΉ bundling transmission, the MCS field in the uplink grant DCI format is used to trigger the borrowing process of the dynamic HARQ process resource. The dynamic HARQ process resource borrowing process refers to: for a VoIP transport block, the Xth (=1, 2, or 3) HARQ process resources after the first transmission attempt HARQ process resource or the retransmission attempt HARQ process resource. Borrowed by the transport block. For example, if the above-mentioned MCS field indicates that the decimal index I _{MCS is} greater than 28, it indicates that the dynamic HARQ process resource borrowing process is triggered, and the value of the above variable X is indicated by the value of the specific index I _MCS (as shown in Table 3 below). . Taking the value of the index I _MCS equal to 29 as an example, the dynamic HARQ process resource borrowing process is enabled and the value of X is 1. table 3

22 6 20 0

23 6 21 0

24 6 22 0

25 6 23 0

26 6 24 0

27 6 25 0

28 6 26 0

The value of the variable X

29 1

30 2

31 3

6 is a first schematic diagram of a borrowing process for triggering dynamic HARQ process resources in accordance with a preferred embodiment of the present invention. As shown in FIG. 6, Note: The pattern parameter in the figure indicates a normal uplink grant, and the pattern ▲ indicates an uplink grant for triggering a dynamic HARQ process resource borrowing process. Specifically, the uplink grant for triggering the borrowing of the dynamic HARQ process resource is transmitted in the first subframe (radio frame n subframe 0) of the first transmission attempt of the transport block 0, and the value of the index I _MCS indicated by the MCS field is assumed. It is 29, which indicates that the first HARQ process resource (HARQ Process 1 resource) after the first transmission of the transport block 0 attempts the HARQ process resource is borrowed by the transport block 0. Similarly, the second HARQ process resource (HARQ process 0 resource) after the first transmission of the attempted HARQ process resource by the transport block 2 is borrowed by the transport block 2, and the transport block 3 first transmits the first HARQ process resource after the attempted HARQ process resource ( HARQ process 0 resource) is borrowed by transport block 3. 7 is a second schematic diagram of a borrowing process for triggering dynamic HARQ process resources in accordance with a preferred embodiment of the present invention. As shown in FIG. 7, Note: The pattern parameter in the figure indicates a normal uplink grant, and the pattern ▲ indicates an uplink grant for triggering a dynamic HARQ process resource borrowing process. Specifically, as shown in FIG. 7, the uplink grant for triggering the borrowing of the dynamic HARQ process resource is in the transport block.

2 The first subframe (equivalent to the first retransmission attempt) of the first subframe (radio frame n+5 subframe 6) is transmitted, and it is assumed that the value of the index IMCS indicated by the MCS field is 30, which The second HARQ process resource (HARQ Process 0 resource) after the second transmission of the attempted HARQ process resource of the transport block 2 is borrowed by the transport block 2. FIG. 8 is another flow chart of a transmission processing method of transmission time interval bundling according to an embodiment of the present invention. As shown in FIG. 8, the method is described from the UE side with respect to the embodiment shown in FIG. 2, and specifically includes steps S802 to S804:

S802: The UE receives the trigger information from the network side device for triggering the enhanced transmission time interval bundling transmission mechanism. In the step, the trigger information includes: an MCS field in the uplink grant DCI format; and an uplink grant in the DCI format. The combination of the MCS field and the resource allocation RA field. For example, when the decimal index represented by the MCS field is equal to the minimum value 0, and the decimal index represented by the RA field is equal to the maximum value, the enhanced transmission time interval bundling transmission mechanism is triggered; the enhanced transmission time interval bundling transmission mechanism includes At least one of the following: an enhanced hybrid automatic repeat request HARQ operation, a borrowing process of a HARQ process resource.

S804: The UE uses the enhanced transmission time interval bundling transmission mechanism to perform uplink transmission, triggered by the trigger information. Through the execution of the above steps, when the UE receives the MCS field in the uplink grant DCI format for triggering the use of the enhanced transmission time interval bundle transmission mechanism (enhanced HARQ operation or borrowing process of HARQ process resources), the UE adopts the above enhancement. The transmission time interval bundle transmission mechanism performs uplink transmission. With such a technical solution, the problem that the uplink VoIP service is still the bottleneck of coverage due to the maximum transmission power limited by the UL link or the UE in the prior art is still effectively solved, and the desired coverage requirement cannot be met. It effectively enhances the coverage performance of uplink VoIP services and also avoids the large impact on higher layer protocols or specifications. In this embodiment, the foregoing enhanced HARQ operation includes: setting the HARQ RTT to 12 ms. A further improvement of the foregoing technical solution is that the borrowing process of the foregoing HARQ process resource includes one of the following: a borrowing process of persistent HARQ process resources, a borrowing process of semi-persistent HARQ process resources, and a borrowing process of dynamic HARQ process resources. In this embodiment, a transmission processing method device for transmitting a time interval bundle is further provided, and the device is applied to the network side device, and is used to implement the foregoing embodiments and preferred embodiments. The modules involved in the device will be described. As used hereinafter, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and conceivable. 9 is a block diagram showing the structure of a transmission processing apparatus for transmitting time interval bundling according to an embodiment of the present invention. As shown in Figure 9, the device includes: The obtaining module 90 is configured to obtain trigger information for triggering the use of the enhanced transmission time interval bundle transmission mechanism. The triggering information of the obtaining module 90 includes: a modulation coding scheme MCS field in the uplink grant DCI format, and an enhanced transmission time. The interval bundling transmission mechanism includes at least one of the following: an enhanced HARQ operation, and a borrowing process of the HARQ process resource, the obtaining module 90 acquires the trigger information. The trigger information may also be a combination of the MCS field and the RA field in the uplink grant DCI format, for example, when the decimal index represented by the MCS field is equal to the minimum value 0, and the decimal index represented by the RA field is equal to the maximum value. The enhanced transmission time interval bundling transmission mechanism is triggered. The sending module 92 is connected to the obtaining module 90 and configured to send the trigger message to the UE. When the MCS field in the uplink grant DCI format for triggering the enhanced transmission time interval bundle transmission mechanism (enhanced HARQ operation or the borrowing process of the HARQ process resource) is obtained through the combined action of the above various modules, the network side device immediately Sending the trigger information to the user equipment UE. With such a technical solution, the problem that the uplink VoIP service is still the bottleneck of coverage due to the maximum transmission power limited by the UL link or the UE in the prior art is still effectively solved, and the desired coverage requirement cannot be met. The received energy or subframe utilization of the VoIP transport block under the 50ms delay limit is increased, which ultimately improves the coverage performance of the uplink VoIP service and avoids a large impact on higher layer protocols or specifications. FIG. 10 is a block diagram showing another structure of a transmission processing apparatus for transmitting time interval bundling according to an embodiment of the present invention. As shown in FIG. 10, the device is applied to the UE, and includes: a receiving module 100, configured to receive, from a network side device, trigger information for triggering an enhanced transmission time interval bundling transmission mechanism; wherein, the receiving module 100 is in trigger information. The method includes: uplink granting an MCS field in a DCI format, and an enhanced transmission time interval bundle transmission mechanism including at least one of the following: an enhanced hybrid automatic repeat request HARQ operation, a borrowing process of a HARQ process resource, where the receiving module 100 acquires The above trigger information. The trigger information may also be a combination of the MCS field and the RA field in the row grant DCI format, for example, when the decimal index represented by the MCS field is equal to the minimum value 0, and the decimal index represented by the RA field is equal to the maximum value. The enhanced transmission time interval bundling transmission mechanism is triggered. The transmission module 102 is connected to the receiving module 100, and is configured to perform uplink transmission by using the enhanced transmission time interval bundling transmission mechanism under the triggering of the trigger information. It should be noted that the embodiment of the present invention can be applied to the enhanced ΤΉ bundling processing under the Frequency Division Duplex (FDD) system, and can also be applied to the Time Division Duplex (TDD) system. Enhanced TTI bundling processing. In summary, the embodiments of the present invention achieve the following beneficial effects: Based on the foregoing embodiments of the present invention, the related VoIP service is still the bottleneck of coverage due to the limitation of the UL link or the maximum transmit power of the UE. , unable to meet the expected coverage needs. Effectively enhances the coverage performance of uplink VoIP services: Increases the received energy or subframe utilization of the VoIP transport block under the 50ms delay limit, which further improves the coverage performance of the uplink VoIP service and avoids the high-level protocols or specifications. Great impact. The Cyclic Redundancy Check (CRC) field of the uplink grant DCI format in the existing LTE system uses the Cell-specific Radio Network Temporal Identity (C-RNTI) assigned to the UE by the network side. ) Perform scrambling. The C-RNTI includes a semi-persistent SPS C-RNTI and a dynamic C-RNTL. Similar to the prior art, the CRC field of the uplink grant DCI format used to trigger the enhanced TTI bundling transmission mechanism in the embodiment of the present invention can also utilize the SPS C. - RNTI or dynamic C-RNTI for scrambling. In another embodiment, software is also provided for performing the technical solutions described in the above embodiments and preferred embodiments. In another embodiment, a storage medium is provided, the software being stored, including but not limited to: an optical disk, a floppy disk, a hard disk, a rewritable memory, and the like. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention. INDUSTRIAL APPLICABILITY The above technical solution provided by the present invention can be applied to a transmission process of a transmission time interval bundle, and acquires trigger information for triggering an enhanced transmission time interval bundling transmission mechanism; and transmitting the trigger message to the UE The technical solution solves the related art, because the uplink VoIP service is still the bottleneck of coverage due to the maximum transmission power of the UL link or the UE, and the problem of the desired coverage is not met, thereby effectively enhancing the coverage of the uplink VoIP service. performance.

Claims

Claim

A transmission processing method for transmitting time interval bundles, comprising: acquiring trigger information for triggering an enhanced transmission time interval bundle transmission mechanism; and transmitting the trigger message to a user equipment UE.

2. The method according to claim 1, wherein the trigger information comprises:

Uplink grant downlink control information The modulation coding scheme MCS field in the DCI format.

The method of claim 1, wherein the trigger information further comprises:

The uplink grants a combination of the MCS field in the DCI format and the resource allocation RA field.

4. The method according to claim 3, wherein the method comprises: when the decimal index represented by the MCS field is equal to a minimum value, and the decimal index represented by the RA field is equal to a maximum value, the enhanced transmission The time interval bundle transmission mechanism is triggered.

The method according to any one of claims 1 to 4, wherein the enhanced transmission mechanism comprises at least one of the following:

Enhanced hybrid automatic repeat request HARQ operation, borrowing process of HARQ process resources.

The method according to claim 5, wherein the enhanced HARQ operation comprises: setting a HARQ loopback delay RTT to 12 ms; and/or the borrowing process of the HARQ process resource includes one of the following: a persistent HARQ process The borrowing process of resources, the borrowing process of semi-persistent HARQ process resources, and the borrowing process of dynamic HARQ process resources.

7. The method according to claim 6, wherein the borrowing process of the persistent HARQ process resource comprises: for all consecutive network telephony VoIP transport blocks, the first HARQ process resource located after the first transmission attempt HARQ process resource is The VoIP transport block borrowing process; the borrowing process of the semi-persistent HARQ process resource includes: for at least one consecutive VoIP transport block, the first HARQ process resource located after the first transmission attempt HARQ process resource is used by the VoIP transport block borrow; The borrowing process of the dynamic HARQ process resource includes: for a VoIP transport block, the Xth HARQ process resource located after the first transmission attempt HARQ process resource or the retransmission attempt HARQ process resource is borrowed by the VoIP transport block, where X takes values from one of the following: 1, 2, 3.

8. The method according to claim 6, wherein, when the borrowing process of the semi-persistent HARQ process resource is triggered by using the MCS field, the semi-persistent HARQ process resource borrowing process continues the number of consecutive transport blocks, by using the following One way to determine:

Determined according to an index represented by the MCS field; preset.

The method according to claim 6, further comprising: when the borrowing process of the persistent HARQ process resource is triggered by using the MCS field, the MCS field is further used to close the borrowing of the persistent HARQ process resource. process.

10. The method according to claim 6, wherein, in the case of employing the enhanced HARQ operation, the borrowing process of the persistent HARQ process resource, and the borrowing process of the dynamic HARQ process resource, and in the MCS When the decimal index represented by the field is one of the following, it indicates that the enhanced transmission time interval bundle transmission mechanism is triggered: 29, 30, 31; in the case of the borrowing process using the semi-persistent HARQ process resource, and in the MCS field When the decimal index is represented as the following value, it indicates that the enhanced transmission time interval bundle transmission mechanism is triggered: the value of the index value is greater than 10.

11. The method according to claim 6, wherein, for the enhanced HARQ operation, the borrowing process of the persistent HARQ process resource, and the borrowing process of the semi-persistent HARQ process resource, the MCS field is in transport block 0. Transmitting on the fourth subframe before the arrival time, wherein the transport block 0 is the first transport block that enables the enhanced transmission time interval bundle transmission mechanism;

For the borrowing process of the dynamic HARQ process resource, the MCS field is transmitted on a first subframe that specifies a transport block first transmission attempt or a retransmission attempt HARQ process resource, where the specified transport block is enabled for the enhancement. The transmission block of the transmission time interval bundle transmission mechanism.

12. A transmission processing method for transmitting time interval bundles, comprising:

The user equipment UE receives trigger information from the network side device for triggering the use of the enhanced transmission time interval bundle transmission mechanism; The UE uses the enhanced transmission time interval bundle transmission mechanism to perform uplink transmission, triggered by the trigger information.

The method according to claim 12, wherein the trigger information comprises: an uplink granting downlink control information, a modulation coding scheme MCS field in a DCI format.

The method according to claim 12, wherein the trigger information further comprises: a combination of an MCS field in an uplink grant DCI format and a resource allocation RA field.

15. The method according to claim 14, wherein, when the decimal index represented by the MCS field is equal to a minimum value, and the decimal index represented by the RA field is equal to a maximum value, the enhanced transmission time interval bundling transmission mechanism is trigger.

The method according to any one of claims 12 to 15, wherein the enhanced transmission time interval bundle transmission mechanism comprises at least one of the following:

17. The method according to claim 16, wherein the enhanced HARQ operation comprises: setting a HARQ loopback delay RTT to 12 ms; and/or the borrowing process of the HARQ process resource comprises one of the following: a persistent HARQ process The borrowing process of resources, the borrowing process of semi-persistent HARQ process resources, and the borrowing process of dynamic HARQ process resources.

A transmission processing device for transmitting a time interval bundle, which is applied to a network side device, comprising: an obtaining module, configured to acquire trigger information for triggering a bundle transmission mechanism using an enhanced transmission time interval;

The sending module is configured to send the trigger message to the user equipment UE.

The device according to claim 18, wherein the acquiring module is configured to acquire the trigger information when the trigger information includes the following content:

The device according to claim 18, wherein the acquiring module is further configured to acquire the trigger information when the trigger information includes the following content: The uplink grants a combination of the MCS field in the DCI format and the resource allocation RA field.

The device according to any one of claims 18 to 20, wherein the acquiring module is configured to acquire the trigger information when the enhanced transmission time interval bundle transmission mechanism comprises at least one of the following: enhanced Hybrid automatic repeat request HARQ operation, borrowing process of HARQ process resources.

A transmission processing apparatus for transmitting time interval bundling, which is applied to a user terminal UE, comprising: a receiving module, configured to receive trigger information from a network side device for triggering an enhanced transmission time interval bundling transmission mechanism;

The transmission module is configured to perform uplink transmission by using the enhanced transmission time interval bundling transmission mechanism under the triggering of the trigger information.

The device according to claim 22, wherein the receiving module is configured to receive the trigger information when the trigger information includes the following information:

The device according to claim 22, wherein the receiving module is further configured to receive the trigger information when the trigger information includes the following content:

The device according to any one of claims 22 to 24, wherein the receiving module is configured to receive the trigger information when the enhanced transmission time interval bundling transmission mechanism comprises at least one of the following: enhanced Hybrid automatic repeat request HARQ operation, borrowing process of HARQ process resources.

26. A network side device, comprising: the device of any of claims 18-21.

27. A user equipment UE, comprising: the apparatus of any of claims 22-25.