CN108400845A

CN108400845A - Determine the method, apparatus and system of retransmission process number

Info

Publication number: CN108400845A
Application number: CN201710068394.8A
Authority: CN
Inventors: 石靖; 夏树强; 梁春丽; 韩祥辉; 张雯; 张文峰
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-02-06
Filing date: 2017-02-06
Publication date: 2018-08-14

Abstract

Present disclose provides a kind of method, apparatus and system of determining retransmission process number.Wherein it is determined that the method for retransmission process number includes：Retransmission process No. the first is determined by implicit mapping ruler and/or process number indication signaling, wherein terminal transmits identical data packet in first biography and re-transmission using different Transmission Time Intervals；Alternatively, determining retransmission process No. the second by implicit mapping ruler or process number indication signaling, wherein terminal transmits identical data packet in first biography and between retransmitting using same tranfer time interval difference Transmission Time Interval processing delay；Wherein, the implicit mapping ruler is used to implicitly indicate the mapping relations of the process of transmission identical data packet between the mapping relations of process or the different Transmission Time Interval processing delay at same tranfer time interval of transmission identical data packet between different Transmission Time Intervals.

Description

Method, device and system for determining retransmission process number

Technical Field

The present disclosure relates to the field of Long Term Evolution (LTE), and in particular, to a method, an apparatus, and a system for determining a retransmission process number.

Background

With the increasing development of the fourth Generation mobile communication technology (4G), Long Term Evolution (LTE, Long-Term Evolution)/Long Term Evolution advanced (LTE-Advance/LTE-a, Long-Term Evolution Advance) system, the technical index requirement for the next Generation mobile communication technology, i.e., the 5th Generation mobile communication technology (5G) is also higher. It is widely accepted in the industry that next generation mobile communication systems should have the characteristics of ultra-high speed, ultra-high capacity, ultra-high reliability, and ultra-low delay transmission characteristics. For the index of ultra-low delay in 5G systems, it is currently accepted that the delay of the air interface is in the order of about 1 ms.

For the 4G system, there is also a requirement for delay reduction, and one method for effectively achieving delay reduction is to reduce the Transmission Time Interval (TTI) of the LTE system by reducing the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols in a single Transmission Time Interval, so as to reduce the Transmission Time Interval length. Another method for effectively implementing delay reduction is to reduce the processing delay, i.e. reduce the scheduling timing and the feedback timing, on the basis of keeping the length of the transmission time interval unchanged.

In the LTE system, a fixed scheduling feedback timing is adopted, in the existing LTE system, a fixed scheduling timing relationship is adopted for the scheduling timing, and a Physical Downlink Control Channel (PDCCH) carries a Downlink grant (DL grant) to schedule a Physical Downlink data traffic Channel (PDSCH) in the same subframe. And scheduling a Physical Uplink data traffic Channel (PUSCH) located on a subframe n + k by using a PDCCH located on the subframe n to carry an Uplink grant (UL grant), wherein k is 4 in a Frequency Division Duplex (FDD) system, and k is greater than or equal to 4 in a Time Division Duplex (TDD) system and depends on Uplink and downlink subframe configurations. Accordingly, for the feedback timing of the PDSCH, a synchronous timing relationship is adopted, i.e., positive or negative acknowledgement (ACK/NACK) is fed back in subframe n + k for the PDSCH in subframe n. K is 4 in FDD, k is more than or equal to 4 in TDD and depends on the configuration of the uplink and downlink subframes.

The minimum scheduling feedback timing currently accepted by the industry is n + k, where k is 3, i.e. the processing delay is (n +3) ms. Meanwhile, for the users supporting 1ms transmission time interval delay reduction, whether to perform processing delay reduction (the minimum scheduling feedback timing is n +3) is configured semi-statically through RRC signaling.

At present, it is not known whether the initial transmission and the retransmission of the same data packet can be combined or not when switching between different transmission time interval lengths or between the same transmission time interval length and different processing delays. If the problem of combining the initial transmission and the retransmission of the same data packet in the switching process between different transmission time interval lengths or the same transmission time interval length and different processing time delays is not considered, the process sharing between different transmission time interval lengths or the same transmission time interval length and different processing time delays is not considered. But there may be data loss in this way, resulting in a reduction in communication efficiency. Therefore, the problem of combining the initial transmission and the retransmission of the same data packet during switching between different transmission time interval lengths or different processing delays of the same transmission time interval length needs to be studied, that is, processes between different transmission time interval lengths or different processing delays of the same transmission time interval length are allowed to be shared and it is necessary to determine to use the same process to transmit data. Therefore, there is a problem in the related art that data is lost due to process non-sharing when a transmission time interval is changed or a processing delay of the same transmission time interval is changed.

Disclosure of Invention

The embodiment of the disclosure provides a method, a device and a system for determining a retransmission process number, so as to solve at least the problem of data loss caused by process non-sharing when a transmission time interval is changed or the processing delay of the same transmission time interval is changed in the related art.

According to an embodiment of the present disclosure, there is provided a method of determining a retransmission process number, including: determining a first retransmission process number through implicit mapping rules and/or process number indication signaling, wherein the terminal transmits the same data packet by using different transmission time intervals in initial transmission and retransmission; or, determining a second retransmission process number through an implicit mapping rule or a process number indication signaling, wherein the terminal transmits the same data packet between the initial transmission and the retransmission using the same transmission time interval and different transmission time interval processing delays; the implicit mapping rule is used for implicitly indicating the mapping relationship of processes transmitting the same data packet between different transmission time intervals or the mapping relationship of processes transmitting the same data packet between different transmission time interval processing delays of the same transmission time interval.

Optionally, determining the first retransmission process number through process number indication signaling includes at least one of: determining according to a process number indication signaling during retransmission, wherein the bit number of the process number indication signaling during retransmission is determined according to the maximum process number of the transmission time interval length used during initial transmission and the maximum process number of the transmission time interval length used during retransmission; and determining according to the process number indication signaling during retransmission, wherein the bit number of the process number indication signaling during retransmission is determined according to the sum of the maximum process number of the transmission time interval length used during initial transmission and the maximum process number of the transmission time interval length used during retransmission.

Optionally, the method comprises at least one of: when the maximum number of processes of the transmission time interval length used for the initial transmission is X and the maximum number of processes of the transmission time interval length used for the retransmission is Y, the maximum value of the maximum number of processes of the transmission time interval length used for the initial transmission and the maximum number of processes of the transmission time interval length used for the retransmission is not less thanWhen the maximum number of processes of the transmission time interval length used for the initial transmission is X and the maximum number of processes of the transmission time interval length used for the retransmission is Y, the sum of the maximum number of processes of the transmission time interval length used for the initial transmission and the maximum number of processes of the transmission time interval length used for the retransmission is not less than

Optionally, the method is further used for determining the initial transfer process number.

Optionally, the method further comprises at least one of: the method comprises the following steps of using a short transmission time interval in initial transmission and using a 1ms transmission time interval in retransmission, wherein the processing delay of the 1ms transmission time interval at least comprises the following steps: (n +4) ms and/or (n +3) ms; or, a 1ms transmission time interval is used in the initial transmission, and a short transmission time interval is used in the retransmission, wherein the short transmission time interval at least comprises: 2 orthogonal frequency division multiplexing symbols and/or 1 slot in a subframe.

Optionally, determining the first retransmission process number through process number indication signaling further includes: and determining according to the process number indication signaling during retransmission, wherein the bit number of the process number indication signaling is determined according to the maximum process number of the transmission time interval length used by retransmission.

Optionally, determining the first retransmission process number through an implicit mapping rule and a process number indication signaling, further includes: and determining according to the process number indication signaling and the implicit mapping rule during retransmission, wherein the bit number of the process number indication signaling is determined according to the maximum process number of the transmission time interval length used by retransmission.

Optionally, the determining according to the process number indication signaling and the implicit mapping rule during retransmission includes: mapping each process number of the maximum L processes in the transmission time interval length used for initial transmission and the process number of the maximum M processes in the transmission time interval length used for retransmission according to a plurality of rules corresponding to one process; wherein, L > M; the numerical value indicated by the process number signaling during retransmission with the number of M processes is used for representing any one of a plurality of processes mapped to the process corresponding to the numerical value.

Optionally, the determining according to the process number indication signaling and the implicit mapping rule during retransmission further includes: all process numbers in the process numbers with P process numbers in the transmission time interval length used for initial transmission have a one-to-one mapping relation with the subframe numbers; process number indication signaling of a process number with Q process numbers in the transmission time interval length used for retransmission is effective in a corresponding part of subframes in the indication range of the process number indication signaling; the process number beyond the indication range of the process number indication signaling is determined according to the mapping of the corresponding subframe number; wherein P > Q.

Optionally, the number of the partial subframes is a maximum number of processes a of a transmission time interval length used by the retransmission; and the positions of the partial subframes are the subframes corresponding to the process 0 to the process (A-1).

Optionally, a many-to-one mapping relationship exists between all process numbers and subframe numbers in the process numbers of the K process numbers in the transmission time interval length used for initial transmission; and determining at least one process in the plurality of processes mapped to the subframe according to the value indicated by the process number indication signaling.

Optionally, the many-to-one mapping relationship is represented by at least:wherein N is a process number determined by a subframe number, SFN is a radio frame number, h is a subframe number in a radio frame, k represents a current subframe, N is a maximum process number of a short transmission time interval, and i is 0,1, 2.

Optionally, determining a second retransmission process number through process number indication signaling, where the second retransmission process number is used to indicate that transmission time intervals are the same, and that initial transmission and retransmission of data packets with different transmission time intervals and different processing delays are the same, and the method includes: and determining according to the process number indication signaling during retransmission, wherein the bit number of the process number indication signaling is determined according to the maximum value of the maximum process number of the processing time delay used for initial transmission and the maximum process number of the processing time delay used for retransmission.

Optionally, a second retransmission process number is determined by an implicit mapping rule, where the second retransmission process number is used to indicate that transmission time intervals are the same, and the transmission time intervals process data packets with different delays for initial transmission and retransmission and the same transmission, and at least includes one of the following: mapping all process numbers and subframe numbers of the processing time delay used in initial transmission; mapping all process numbers and subframe numbers of processing time delay used in retransmission; mapping all process numbers of processing time delay used in initial transmission with subframe numbers and subframes of configuration signaling for transmitting wireless resource reset, wherein the configuration signaling is high-level signaling containing configuration of same transmission time interval and different processing time delay; and mapping all process numbers of the processing time delay used in retransmission with subframe numbers and subframes of configuration signaling for transmitting wireless resource resetting, wherein the configuration signaling is high-level signaling containing configuration of the same transmission time interval and different processing time delays.

Optionally, configuring a determination manner of the retransmission process number through a higher layer signaling, where the determination manner at least includes one of: and the implicit mapping rule is used for determining, and the process number is used for indicating signaling determination.

According to another embodiment of the present disclosure, there is provided an apparatus for determining a retransmission process number, including: a determining module, configured to determine a first retransmission process number through an implicit mapping rule and/or a process number indication signaling, where the terminal transmits the same data packet using different transmission time intervals for initial transmission and retransmission; or, determining a second retransmission process number through an implicit mapping rule or a process number indication signaling, wherein the terminal transmits the same data packet between the initial transmission and the retransmission using the same transmission time interval and different transmission time interval processing delays; the implicit mapping rule is used for implicitly indicating the mapping relationship of processes transmitting the same data packet between different transmission time intervals or the mapping relationship of processes transmitting the same data packet between different transmission time interval processing delays of the same transmission time interval.

Optionally, the determining module further includes a first determining unit, configured to determine according to a process number indication signaling at the time of retransmission, where a bit number of the process number indication signaling at the time of retransmission is determined according to a maximum value of a maximum process number that a transmission time interval length used at the time of initial transmission and a maximum process number that the transmission time interval length used at the time of retransmission has, and/or determined according to a process number indication signaling at the time of retransmission, where the bit number of the process number indication signaling at the time of retransmission is determined according to a sum of the maximum process number that the transmission time interval length used at the time of initial transmission and the maximum process number that the transmission time interval length used at the time of retransmission has.

Optionally, the determining module further includes a second determining unit, configured to determine according to a process number indication signaling during retransmission, where a bit number of the process number indication signaling is determined according to a maximum process number of a transmission time interval length used for retransmission.

Optionally, the determining module further includes a third determining unit, configured to determine according to a process number indication signaling and an implicit mapping rule during retransmission, where a bit number of the process number indication signaling is determined according to a maximum process number of a transmission time interval length used for retransmission.

Optionally, the determining module further includes a fourth determining unit, configured to determine according to a process number indication signaling during retransmission, where a bit number of the process number indication signaling is determined according to a maximum value of a maximum process number of a processing delay used for initial transmission and a maximum process number of a processing delay used for retransmission.

Optionally, the determining module further includes a fifth determining unit, configured to perform an operation of one of: mapping all process numbers and subframe numbers of processing time delay used in initial transmission; mapping all process numbers and subframe numbers of processing time delay used in retransmission; mapping all process numbers of processing time delay used in initial transmission, subframe numbers and subframes of configuration signaling for transmitting wireless resource reset, wherein the configuration signaling is high-level signaling containing configuration of same transmission time interval and different processing time delay; and mapping all process numbers of processing time delay used in retransmission, subframe numbers and subframes of configuration signaling for transmitting wireless resource resetting, wherein the configuration signaling is high-level signaling containing configuration of the same transmission time interval and different processing time delays.

Optionally, the determining module further includes a sixth determining unit, configured to determine that a many-to-one mapping relationship exists between all process numbers and subframe numbers in the process numbers with the M process numbers in the transmission time interval length used for initial transmission; and determining at least one process in the plurality of processes mapped to the subframe according to the value indicated by the process number indication signaling.

According to still another embodiment of the present disclosure, there is provided a system for determining a retransmission process number, including: the network side equipment is used for determining a first retransmission process number through an implicit mapping rule and/or a process number indication signaling, or determining a second retransmission process number through the implicit mapping rule or the process number indication signaling; the terminal is used for transmitting the same data packet by using different transmission time intervals in initial transmission and retransmission according to the first retransmission process number, wherein the first retransmission process number is determined by an implicit mapping rule and/or a process number indication signaling; or, according to a second retransmission process number determined by the network side equipment, transmitting the same data packet between the processing time delays of the initial transmission and the retransmission by using the same transmission time interval and different transmission time intervals; the implicit mapping rule is used for implicitly indicating the mapping relationship of processes transmitting the same data packet between different transmission time intervals or the mapping relationship of processes transmitting the same data packet between different transmission time interval processing delays of the same transmission time interval.

According to yet another embodiment of the present disclosure, there is also provided a storage medium. The storage medium is configured to store program code for performing the steps of:

s1, determining a first retransmission process number through an implicit mapping rule and/or a process number indication signaling, wherein the terminal transmits the same data packet by using different transmission time intervals in initial transmission and retransmission; or, determining a second retransmission process number through an implicit mapping rule or a process number indication signaling, wherein the terminal transmits the same data packet between the initial transmission and the retransmission using the same transmission time interval and different transmission time interval processing delays; the implicit mapping rule is used for implicitly indicating the mapping relationship of processes transmitting the same data packet between different transmission time intervals or the mapping relationship of processes transmitting the same data packet between different transmission time interval processing delays of the same transmission time interval.

An implicit mapping rule of a mapping relation between initial transmission and retransmission can be implicitly indicated by using process number indication signaling. Therefore, the problem of data loss caused by process non-sharing when the transmission time interval is changed or the processing time delay of the same transmission time interval is changed in the related technology can be solved, and the effect of ensuring the combination of the data packets during initial forwarding and retransmission is further achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure. In the drawings:

fig. 1 is a block diagram of a hardware configuration of a computer of a method of determining a retransmission process number according to an embodiment of the present disclosure;

fig. 2 is a flow chart of a method of determining a retransmission process number according to an embodiment of the present disclosure;

fig. 3 is a diagram of a subframe shared by processes between different tti according to an embodiment of the present disclosure;

fig. 4 is a diagram of a subframe shared by processes between different tti according to an embodiment of the present disclosure;

fig. 5 is a diagram of a sub-frame for process sharing between different tti according to an embodiment of the present disclosure;

fig. 6 is a diagram of a subframe shared by processes between different tti according to an embodiment of the present disclosure;

fig. 7 is a diagram of a sub-frame for further inter-process sharing between different tti according to an embodiment of the present disclosure;

fig. 8 is a block diagram of an apparatus for determining a retransmission process number according to an embodiment of the present disclosure;

fig. 9 is a block diagram of a system for determining a retransmission process according to an embodiment of the present disclosure.

Detailed Description

The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Example 1

The method provided by embodiment 2 of the present application may be executed in a mobile terminal, a computer terminal, or a similar computing device. Taking the example of the operation on the terminal, fig. 1 is a hardware structure block diagram of a computer of a method for determining a retransmission process number according to an embodiment of the present disclosure. As shown in fig. 1, computer 10 may include one or more (only one shown) processors 102 (processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 104 for storing data, and a transmission device 106 for communication functions. It will be understood by those skilled in the art that the structure shown in fig. 1 is only an illustration and is not intended to limit the structure of the electronic device. For example, computer 10 may also include more or fewer components than shown in FIG. 1, or have a different configuration than shown in FIG. 1.

The memory 104 may be used to store software programs and modules of application software, such as program instructions/modules corresponding to the method for determining a retransmission process number in the embodiment of the present disclosure, and the processor 102 executes various functional applications and data processing by executing the software programs and modules stored in the memory 104, so as to implement the method described above. The memory 104 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, memory 104 may further include memory located remotely from processor 102, which may be connected to computer 10 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The transmission device 106 is used for receiving or transmitting data via a network. Specific examples of such networks may include wireless networks provided by the communications provider of computer 10. In one example, the transmission device 106 includes a Network adapter (NIC) that can be connected to other Network devices through a base station to communicate with the internet. In one example, the transmission device 106 can be a Radio Frequency (RF) module, which is used to communicate with the internet in a wireless manner.

In this embodiment, a method operating in the mobile terminal is provided, and fig. 2 is a flowchart of a method for determining a retransmission process number according to an embodiment of the present disclosure, and as shown in fig. 2, the flowchart includes the following steps:

step S202, a first retransmission process number is determined through an implicit mapping rule and/or a process number indication signaling, wherein the terminal transmits the same data packet by using different transmission time intervals in initial transmission and retransmission; or, determining a second retransmission process number through an implicit mapping rule or a process number indication signaling, wherein the terminal transmits the same data packet between the initial transmission and the retransmission using the same transmission time interval and different transmission time interval processing delays; the implicit mapping rule is used for implicitly indicating the mapping relationship of processes transmitting the same data packet between different transmission time intervals or the mapping relationship of processes transmitting the same data packet between different transmission time interval processing delays of the same transmission time interval.

Optionally, the present embodiment first provides a definition of terms to be used below, and it should be noted that the following definition is not limited to the definition and description itself, and any variation or extension based on the idea of the embodiments of the present disclosure is included in the scope of the present embodiment:

initial transmission refers to the first transmission of a data packet by the base station or terminal, and retransmission refers to the second transmission of the same data packet by the base station or terminal. Where the retransmission may use the same redundancy version or a different redundancy version than the initial transmission.

In addition, the length of the transmission time interval used in the initial transmission may be the same as or different from the length of the transmission time interval used in the retransmission. When the lengths of the transmission time intervals used for the initial transmission and the retransmission are the same, the processing delay used for the initial transmission is different from the processing delay used for the retransmission. When the lengths of the transmission time intervals used for the initial transmission and the retransmission are different, the processing delay used for the initial transmission and the processing delay used for the retransmission may be the same or different.

The length of the transmission time interval indicated below includes at least one of: 1ms, 2 or 3 orthogonal frequency division multiplexing symbols and 1 slot in a subframe.

Optionally, when the same data packet is transmitted by using different transmission time intervals for the initial transmission and the retransmission of the terminal, that is, determining the first retransmission process number through the implicit mapping rule and/or the process number indication signaling is implemented at least in the following manner:

1. the first retransmission process number is determined using process number indication signaling.

The specific method at least comprises the following two steps:

a. determining a first retransmission process number by process number indication signaling, comprising: and determining according to the process number indication signaling during retransmission. Specifically, the method also specifically covers two modes:

I. the bit number of the process number indication signaling during retransmission is determined according to the maximum value of the maximum process number of the transmission time interval length used during initial transmission and the maximum process number of the transmission time interval length used during retransmission.

Specifically, when the maximum number of processes of the transmission time interval length used in the initial transmission is X and the maximum number of processes of the transmission time interval length used in the retransmission is Y; the maximum process number of the transmission time interval length used in the initial transmission and the maximum process number of the transmission time interval length used in the retransmission are not less thanIt should also be noted that, as an advantageous mode, the maximum value of the maximum number of processes isFor example, if the length of the transmission time interval used in the initial transmission is 2-symbol short transmission time interval, the processing delay adopts n +6 timing relationship, and there are 12 processes at maximum; the length of the transmission time interval used in retransmission is 1ms, the processing time delay adopts n +4 timing relation, and has maximum 8 processes, so the process number indicates the bit number of the signalingIt should be noted that the above method is not only suitable for determining the retransmission process number, but also can be used for determining the initial transmission process number.

And II, the bit number of the process number indication signaling during retransmission is determined according to the sum of the maximum process number of the transmission time interval length used during initial transmission and the maximum process number of the transmission time interval length used during retransmission.

Specifically, when the maximum number of processes of the transmission time interval length used in the initial transmission is X and the maximum number of processes of the transmission time interval length used in the retransmission is Y; the above-mentionedThe sum of the maximum process number of the transmission time interval length used in the initial transmission and the maximum process number of the transmission time interval length used in the retransmission is not less thanIt should also be noted that, as an advantageous mode, the sum of the maximum number of processes isFor example, if the length of the transmission time interval used in the initial transmission is 2-symbol short transmission time interval, the processing delay adopts n +6 timing relationship, and there are 12 processes at maximum; the length of the transmission time interval used in retransmission is 1ms, the processing time delay adopts n +4 timing relation, and has maximum 8 processes, so that the bit quantity of the process number indication signaling isIt should be noted that the above method is not only suitable for determining the retransmission process number, but also can be used for determining the initial transmission process number.

Specifically, if a short transmission time interval is used in the initial transmission, a 1ms transmission time interval is used in the retransmission, wherein the processing delay of the 1ms transmission time interval at least comprises: (n +4) ms and (n +3) ms;

specifically, if a short transmission time interval is used in the initial transmission, a 1ms transmission time interval is used in the retransmission, wherein the processing delay of the 1ms transmission time interval at least comprises: (n +4) ms or (n +3) ms;

specifically, if a 1ms transmission time interval is used at the initial transmission, a short transmission time interval is used at the retransmission, wherein the short transmission time interval at least comprises: 2 orthogonal frequency division multiplexing symbols and 1 slot in a subframe.

Specifically, if a 1ms transmission time interval is used at the initial transmission, a short transmission time interval is used at the retransmission, wherein the short transmission time interval at least comprises: 2 orthogonal frequency division multiplexing symbols or 1 slot in a subframe.

b. The method is determined according to the process number indication signaling during retransmission, wherein the bit number of the process number indication signaling is determined according to the maximum process number of the transmission time interval length used by retransmission.

Specifically, the number of bits of the process number indication signaling may be determined by the following formula:

W＝log₂V

where V represents the maximum number of processes.

2. And determining a first retransmission process number by using the process number indication signaling and the implicit mapping rule.

The method specifically comprises the following steps: and determining according to the process number indication signaling and the implicit mapping rule during retransmission, wherein the bit number of the process number indication signaling is determined according to the maximum process number of the transmission time interval length used by retransmission.

The method is realized by at least the following three methods:

a. mapping each process number of the maximum L processes in the transmission time interval length used for initial transmission and the process number of the maximum M processes in the transmission time interval length used for retransmission according to a plurality of rules corresponding to one process; wherein, L > M; the numerical value indicated by the process number signaling during retransmission with the number of M processes is used for representing any one of a plurality of processes mapped to the process corresponding to the numerical value.

Wherein the plurality of corresponding one rules are mapped as:

b. all process numbers in the process numbers with P process numbers in the transmission time interval length used for initial transmission have a one-to-one mapping relation with the subframe numbers; process number indication signaling of a process number with Q process numbers in the transmission time interval length used for retransmission is effective in a corresponding part of subframes in the indication range of the process number indication signaling; the process number beyond the indication range of the process number indication signaling is determined according to the mapping of the corresponding subframe number; wherein P > Q. It should be noted that the number of the partial subframes is the maximum number of processes a of the transmission time interval length used by the retransmission; and the positions of the partial subframes are the subframes corresponding to the process 0 to the process (A-1).

Specifically, the one-to-one mapping relationship is determined by the following formula:

HARQ_Process_ID＝[SFN*number_of_DL_SFs_per_radio_frame+index_of_DL_SF]modulo[number_of_DL_HARQ_processes]；

the SFN is a wireless frame number (the value range of the SFN is 0-1023);

number _ of _ DL _ SFs _ per _ radio _ frame is the number of downlink subframes in each radio frame (e.g., in an FDD system, the above parameter takes the value of 10);

index _ of _ DL _ SF is the downlink subframe number (the value range of the parameter is 0-9);

number _ of _ DL _ HARQ _ processes is the maximum number of processes corresponding to the tti length used in different ttis.

c. All process numbers in the process numbers with M process numbers in the transmission time interval length used for initial transmission have a many-to-one mapping relation with the subframe number; and determining at least one process in the plurality of processes mapped to the subframe according to the value indicated by the process number indication signaling.

Specifically, the many-to-one mapping relationship is determined by the following formula:

wherein N is a process number determined by a subframe number, SFN is a radio frame number, h is a subframe number in a radio frame, k represents a current subframe, N is a maximum process number of a short transmission time interval, and i is 0,1, 2.

It should be noted that, in this embodiment, the value indicated by the process number indication signaling is determined to be mapped to at least one process in the multiple processes in the subframe, and the indication manner adopted at least includes: the bitmap indicates the mode.

In addition, the following scenario is provided in this embodiment to understand the technical solution described in this embodiment:

scene 1:

fig. 3 is a sub-frame diagram of a process sharing between different tti according to an embodiment of the disclosure. As shown in fig. 1, the base station schedules the terminal to transmit new data in a short transmission time interval #1 in a subframe n by using a process x, and the new data is carried by a short Physical Downlink Shared Channel (sPDSCH). Assuming that the short transmission time interval is 2 ofdm symbols at this time, the 14 ofdm symbols in the 1ms subframe are divided into 6 short transmission time intervals, each of which has 3-2-2-2-2-3 ofdm symbols or 2-3-2-2-2-3 ofdm symbols, and assuming that the uplink data scheduling timing and the downlink data feedback timing are n +6 short transmission time intervals, there are at most 12 processes at this time, and x is any one of 0 to 11.

The terminal feeds back NACK after receiving the data of the short transmission time interval #1 in the subframe n, and at the moment, the base station dynamically schedules the terminal to transmit the data of the same process by using the transmission time interval of 1ms in the subframe n +2 due to objective reasons, such as that the transmission time interval of 1ms has no other service transmission or the time delay requirement changes, and the like, wherein the processing time delay of the transmission time interval of 1ms is (n +4) ms, and the maximum process number is 8. At this time, when x is 0 to 7, the base station continuously retransmits the same data packet in the same process by using a Downlink Control Information (DCI) supporting a 1ms transmission time interval and having a processing delay of (n +4) ms, and transmits the same data packet in the same redundancy version or different redundancy versions. After receiving the retransmission data, the terminal combines the initial transmission data and the retransmission data of the same process. For x of 8-11, the transmission of the initial transmission data and the new transmission data of the same process by using different transmission time intervals is not supported.

Similarly, if the used 1ms transmission time interval processing delay is (n +3) ms and the maximum number of processes is 6, at this time, when x is 0 to 5, the base station continues to retransmit the same data packet in the same process through the downlink control information scheduling terminal which supports the 1ms transmission time interval and has the processing delay of (n +3) ms, and performs transmission in the same redundancy version or different redundancy versions. After receiving the retransmission data, the terminal combines the initial transmission data and the retransmission data of the same process. For x of 6-11, the transmission of the initial transmission data and the new transmission data of the same process by using different transmission time intervals is not supported.

Scene 2

As shown in fig. 3, the base station schedules the terminal to transmit new data in a short transmission time interval #1 in a subframe n by using a process x, and the new data is carried by a short physical downlink shared channel. Assuming that the short transmission time interval is 2 ofdm symbols at this time, the 14 ofdm symbols in the 1ms subframe are divided into 6 short transmission time intervals, each of which has 3-2-2-2-2-3 ofdm symbols or 2-3-2-2-2-3 ofdm symbols, and assuming that the uplink data scheduling timing and the downlink data feedback timing are n +6 short transmission time intervals, there are at most 12 processes at this time, and x is any one of 0 to 11.

In this case, process sharing is allowed between different tti lengths, and the maximum number of processes with a short tti of 2 symbols is different from the maximum number of processes with a tti of 1ms, which requires many-to-one mapping. When the transmission time interval is 1ms and the processing delay is (n +4) ms, the mapping relationship between 12 processes with a short transmission time interval of 2 symbols and 8 processes with a transmission time interval of 1ms is shown in table 1.

TABLE 1

The terminal feeds back NACK after receiving the data of the short transmission time interval #1 in the subframe n, and at the moment, the base station dynamically schedules the terminal to transmit the data of the same process by using the transmission time interval of 1ms in the subframe n +2 due to objective reasons, such as that the transmission time interval of 1ms has no other service transmission or the time delay requirement changes, and the like, wherein the processing time delay of the transmission time interval of 1ms is (n +4) ms, and the maximum process number is 8. At this time, when x is 0 to 11, the base station continues to retransmit the same data packet with the same process through the downlink control information scheduling terminal which supports the 1ms transmission time interval and has the processing delay of (n +4) ms, and when the process number in the downlink control information is indicated as 0 to 7, the process number represents the 0 to 7 process number which is the same as the short transmission time interval or the process number 8 to 11 can also be represented when the process number in the downlink control information is 0 to 3, and the data packet is transmitted with the same redundancy version or different redundancy versions. After receiving the retransmission data, the terminal combines the first transmission data and the retransmission data of the same process. At this time, when process sharing with different tti lengths is implemented, processes 0 and 8 cannot be supported simultaneously, processes 1 and 9 cannot be supported simultaneously, processes 2 and 10 cannot be supported simultaneously, and processes 3 and 11 cannot be supported simultaneously. For example, taking processes 0 and 8 as examples for explanation, when the initial transmission of the terminal only has process 0 and does not have process 8, when the process number in retransmission is indicated as 0, it indicates that the data of the initial transmission process 0 for transmitting the same data packet is transmitted; when the process 8 is only initially transmitted and the process 0 is not provided, the data of the initially transmitted process 8 for transmitting the same data packet is represented when the process number is indicated as 0 during retransmission; when the process 0 and the process 8 are simultaneously in initial transmission, when the process number is indicated as 0 in retransmission, the data of the initial transmission process 0 for transmitting the same data packet is represented, and at this time, the process 8 preferably still adopts the same transmission time interval for retransmission (the data of the process 8 is discarded in suboptimal mode);

similarly, if the used 1ms tti processing delay is (n +3) ms and the maximum number of processes is 6, the process many-to-one mapping for process sharing is shown in table 2. At this time, when x is 0 to 11, the base station continues to retransmit the same data packet in the same process through the downlink control information scheduling terminal which supports the 1ms transmission time interval and has the processing delay of (n +3) ms, and when the process number in the downlink control information is indicated as 0 to 5, the process number represents the 0 to 5 process number which is the same as the short transmission time interval or can also represent the process number 6 to 11, and the data packet is transmitted in the same redundancy version or different redundancy versions. After receiving the retransmission data, the terminal combines the first transmission data and the retransmission data of the same process. At this time, when process sharing with different tti lengths is implemented, processes 0 and 6 cannot be supported simultaneously, processes 1 and 7 cannot be supported simultaneously, processes 2 and 8 cannot be supported simultaneously, processes 3 and 9 cannot be supported simultaneously, processes 4 and 10 cannot be supported simultaneously, and processes 5 and 11 cannot be supported simultaneously.

TABLE 2

Short tti 2 symbol process	Transmission time interval 1ms procedure
		0、6	0
1、7	1
		2、8	2
3、9	3
		4、10	4
5、11	5

Scene 3

The base station schedules the terminal to transmit new data using process x in a short transmission time interval. Assuming that the short transmission time interval is 2 ofdm symbols at this time, the 14 ofdm symbols in the 1ms subframe are divided into 6 short transmission time intervals, each of which has 3-2-2-2-2-3 ofdm symbols or 2-3-2-2-2-3 ofdm symbols, and assuming that the uplink data scheduling timing and the downlink data feedback timing are n +6 short transmission time intervals, there are at most 12 processes at this time, and x is any one of 0 to 11.

At this time, the process sharing between different transmission time interval lengths is allowed, the maximum process number of the short transmission time interval 2 symbols is different from the maximum process number of the transmission time interval 1ms, the subframe number and the + process number are firstly in one-to-one correspondence through implicit mapping, and the process sharing is realized through the following formula:

the SFN is a wireless frame number (the value range of the SFN is 0-1023);

number _ of _ DL _ SFs _ per _ radio _ frame is the number of downlink subframes in each radio frame (e.g., the value of the above parameter is 10 in a Frequency Division Duplex (FDD) system);

index _ of _ DL _ SF is a downlink subframe number (the value range of the parameter is 0 to 9);

The maximum number of processes corresponding to a larger number of processes in different tti lengths is 12, where the tti is 2 symbols. Fig. 4 is a diagram of a subframe for process sharing between different tti according to an embodiment of the disclosure. As shown in fig. 4, when the tti is 1ms, 12 processes corresponding to 2 symbols are mapped to each 12 subframe (when the timing is n + 6). For the uplink mapping, the downlink subframe in the expression may be replaced by the uplink subframe, for example, in the case of the frequency division duplex system, a group of 12 subframes is mapped to 12 processes corresponding to 2 symbols (when the timing is n + 6).

The terminal feeds back NACK after receiving the data of the short transmission time interval #1 in a certain subframe n, and at the moment, the base station dynamically schedules the terminal to transmit the data of the same process by using the transmission time interval of 1ms in a subframe n +2 due to objective reasons, such as that the transmission time interval of 1ms has no other service transmission or the time delay requirement changes, and the like, wherein the processing time delay of the transmission time interval of 1ms is (n +4) ms, and the maximum process number is 8. At this time, when x is 0-11, the base station ensures that the terminal continues to retransmit the same data packet in the same process through the process number indication signaling indication and the implicit transmission rule in the downlink control information which supports the 1ms transmission time interval and has the processing delay of (n +4) ms. At this time, when the transmission time interval is 1ms and the timing is (n +4) ms, the maximum number of processes is 8. The downlink asynchronous HARQ has a process number indicating signaling, for the sub-frame of the mapped process between 0 and 7, the process number indicating signaling (the value range is 0 to 7) actually determines the specific process, and the sub-frame number mapping process number is invalid at the moment; and for the sub-frame of which the process is between 8 and 11 after mapping, the process number indicates invalidity and is determined by the sub-frame number mapping process number. For example: the process number is determined by process number indication signaling in subframe #3 of downlink of radio frame #1, at which time subframe #3 implicitly maps to process 1 as invalid. Another example is: in the downlink subframe #3 of the radio frame #2, the process number is determined as the process 11 by subframe number implicit. The retransmission is transmitted with the same redundancy version or different redundancy versions. After receiving the retransmission data, the terminal combines the first transmission data and the retransmission data of the same process. At this time, when process sharing with different transmission time interval lengths is realized, the processes 0 to 7 are determined through signaling indication, and the processes 8 to 11 are determined through implicit transmission. For the uplink scheduling timing (n +4) ms, when the UL grant has no process number indication, the process number is determined only by implicit mapping.

Similarly, if the used 1ms transmission time interval processing delay is (n +3) ms and the maximum number of processes is 6, the process sharing is realized by the process 0-5 determined by the signaling indication and the process 6-11 determined by the implicit transmission, which is different from the 1ms transmission time interval processing delay of (n +4) ms. At this time, when x is 0-11, the base station ensures that the terminal continues to retransmit the same data packet in the same process through the process number indication signaling indication and the implicit transmission rule in the downlink control information which supports the 1ms transmission time interval and has the processing delay of (n +3) ms. After receiving the retransmission data, the terminal combines the first transmission data and the retransmission data of the same process.

Scene 4

At this time, process sharing between different tti lengths is allowed, the maximum number of processes with a short tti of 2 symbols is different from the maximum number of processes with a tti of 1ms, and first, a process number with a larger number of processes and a subframe number are mapped many-to-one by implicit mapping, for example, for a downlink mapping relationship expression:

where N denotes a Process number HARQ _ Process _ ID determined by a subframe number, h denotes number _ of _ DL _ SFs _ per _ radio _ frame, k denotes index _ of _ DL _ SF, N denotes number _ of _ DL _ HARQ _ processes, and i is 0,1, 2. The SFN is a radio frame number (taking a value of 0 to 1023), number _ of _ DL _ SFs _ per _ radio _ frame is the number of downlink subframes in each radio frame (for example, the value is 10 in an FDD system), index _ of _ DL _ SF is the number of downlink subframes (taking a value of 0 to 9), number _ of _ DL _ HARQ _ processes is the maximum number of processes corresponding to more processes in different tti lengths, and at this time, the number of processes corresponding to 2 symbols is a short tti, which is 12. Fig. 5 is a diagram of a sub-frame for process sharing between different tti according to an embodiment of the present disclosure; as shown in fig. 5, when the tti is 1ms, 12 processes corresponding to 2 symbols are mapped in each group of 4 subframes (when the timing is n + 6). For the uplink mapping, the downlink subframe in the expression may be replaced by the uplink subframe, for example, in the case of an FDD system, a group of 12 subframes is mapped to 12 processes corresponding to 2 symbols (when the timing is n + 6).

The terminal feeds back NACK after receiving the data of the short transmission time interval #1 in a certain subframe n, and at the moment, the base station dynamically schedules the terminal to transmit the data of the same process by using the transmission time interval of 1ms in a subframe n +2 due to objective reasons, such as that the transmission time interval of 1ms has no other service transmission or the time delay requirement changes, and the like, wherein the processing time delay of the transmission time interval of 1ms is (n +4) ms, and the maximum process number is 8. At this time, when x is 0-11, the base station ensures that the terminal continues to retransmit the same data packet in the same process through the process number indication signaling indication and the implicit transmission rule in the downlink control information which supports the 1ms transmission time interval and has the processing delay of (n +4) ms. At this time, when the transmission time interval is 1ms and the timing is (n +4) ms, the maximum number of processes is 8. And the downlink asynchronous HARQ has process number indication signaling, and at most 3 processes exist in a certain subframe after mapping, and at least one process in the 3 processes is further determined through the process number indication signaling. For at most 3 processes in a certain subframe, the sequences are a, b and c from small to large, wherein a < b < c, and a 3bits process number indicates that the signaling indicates at least one process in the 3 processes as shown in table 3. In this case, data packets of multiple processes are allowed to be transmitted in the same physical downlink shared channel, and independent coding or joint coding is used among multiple data packets.

TABLE 3

3bits process number indication signaling	Progress of indication (at least one of a, b, c)
		000	a
001	b
		010	c
011	a,b
		100	b,c
101	a,c
		110	a,b,c
111	reserved

For example: in the wireless frame #0 downlink sub-frame #1, firstly, according to the implicit mapping rule from the sub-frame number to the process numberDetermining to transmit data of at least one of the processes 3,4,5 of the original short transmission time interval, and further determining a specific process according to the process number indication signaling, for example, the indication is 001 to indicate the process 4, and the indication is 110 to indicate the data of the processes 3,4, 5. The retransmission is transmitted with the same redundancy version or different redundancy versions. When the retransmitted data packet can distinguish data of each process, the terminal combines the first transmitted data and the retransmitted data of the same process after receiving the retransmitted data. At this time, when the sharing of the processes with different transmission time interval lengths is realized, at least one of a group of processes is determined through a subframe number, and further, the specific number of the processes in the group of processes is determined through signaling indication. For the uplink scheduling timing (n +4) ms, when the UL grant has no process number indication, a group of process numbers is determined only by implicit mapping, and the specific process number can be carried by data information.

Similarly, if the used 1ms tti processing delay is (n +3) ms and the maximum number of processes is 6, there is no difference between the implementation of process sharing and the 1ms tti processing delay is (n +4) ms. At this time, when x is 0-11, the base station ensures that the terminal continues to retransmit the same data packet in the same process through the process number indication signaling indication and the implicit transmission rule in the downlink control information which supports the 1ms transmission time interval and has the processing delay of (n +3) ms. After receiving the retransmission data, the terminal combines the first transmission data and the retransmission data of the same process.

Scene 5:

as shown in FIG. 3, the base station schedules the terminal to transmit new data in a short transmission time interval #1 in a subframe n by using a process x, and the new data is transmitted by a short physical downlinkThe shared channel carries. Assuming that the short transmission time interval is 2 ofdm symbols at this time, the 14 ofdm symbols in the 1ms subframe are divided into 6 short transmission time intervals, each of which has 3-2-2-2-3 ofdm symbols or 2-3-2-2-3 ofdm symbols, and assuming that the uplink data scheduling timing and the downlink data feedback timing are n +6 short transmission time intervals, the maximum 12 processes are provided at this time, and in the case of supporting switching of different transmission time interval lengths between initial transmission and retransmission, the processing delay of the 1ms transmission time interval is (n +4) ms and the maximum number of processes is 8, and the process numbers of the short transmission time intervals and the 1ms transmission time interval indicate the maximum number of bits of the bit field according to the transmission time interval length used at initial transmission and the transmission time used at retransmission The maximum of the maximum number of processes that the inter-interval length has is determined, i.e. preferablyA maximum of 12 processes is indicated, i.e. x is any one of 0-11.

The terminal feeds back NACK after receiving the data of the short transmission time interval #1 in the subframe n, and at the moment, the base station dynamically schedules the terminal to transmit the data of the same process by using the transmission time interval of 1ms in the subframe n +2 due to objective reasons, such as that the transmission time interval of 1ms has no other service transmission or the time delay requirement changes, and the processing time delay of the transmission time interval of 1ms is (n +4) ms. At this time, the base station continues to retransmit the same data packet in the same process through the downlink control information scheduling terminal containing the 4-bits process number indication bit field, and transmits the same data packet in the same redundancy version or different redundancy versions. After receiving the retransmission data, the terminal combines the initial transmission data and the retransmission data of the same process.

Similarly, if the 1ms tti processing delay is (n +3) ms and the maximum number of processes is 6, the process number indicates that the bit field isIndicating a maximum of 12 processes, i.e. xIs any one of 0 to 11. The base station continuously retransmits the same data packet in the same process through the downlink control information scheduling terminal containing the 4bits process number indication bit field, and the same redundancy version or different redundancy versions are used for transmission. After receiving the retransmission data, the terminal combines the initial transmission data and the retransmission data of the same process.

Scene 6:

as shown in fig. 3, the base station schedules the terminal to transmit new data in a short transmission time interval #1 in a subframe n by using a process x, and the new data is carried by a short physical downlink shared channel. Assuming that the short transmission time interval is 2 ofdm symbols at this time, the 14 ofdm symbols in the 1ms subframe are divided into 6 short transmission time intervals, each of which has 3-2-2-2-3 ofdm symbols or 2-3-2-2-3 ofdm symbols, and assuming that the uplink data scheduling timing and the downlink data feedback timing are n +6 short transmission time intervals, the maximum 12 processes are provided at this time, and in the case of supporting switching of different transmission time interval lengths between initial transmission and retransmission, the processing delay of the 1ms transmission time interval is (n +4) ms and the maximum number of processes is 8, and the process numbers of the short transmission time intervals and the 1ms transmission time interval indicate the maximum number of bits of the bit field according to the transmission time interval length used at initial transmission and the transmission time used at retransmission The sum of the maximum number of processes that the inter-interval length has is determined, i.e. preferablyA maximum of 12+ 8-20 processes is indicated, i.e. x is any one of 0-19.

The terminal feeds back NACK after receiving the data of the short transmission time interval #1 in the subframe n, and at the moment, the base station dynamically schedules the terminal to transmit the data of the same process by using the transmission time interval of 1ms in the subframe n +2 due to objective reasons, such as that the transmission time interval of 1ms has no other service transmission or the time delay requirement changes, and the processing time delay of the transmission time interval of 1ms is (n +4) ms. At the moment, the base station continuously retransmits the same data packet by the same process through the downlink control information scheduling terminal containing the 5bits process number indication bit field, and the same redundancy version or different redundancy versions are used for transmission. After receiving the retransmission data, the terminal combines the initial transmission data and the retransmission data of the same process.

Similarly, if the 1ms tti processing delay is (n +3) ms and the maximum number of processes is 6, the process number indicates that the bit field isA maximum of 12+6 is indicated as 18 processes, i.e. x is any one of 0-17. The base station continuously retransmits the same data packet in the same process through the downlink control information scheduling terminal containing the 5bits process number indication bit field, and the same redundancy version or different redundancy versions are used for transmission. After receiving the retransmission data, the terminal combines the initial transmission data and the retransmission data of the same process.

Optionally, for the terminal, the same data packet is transmitted between the first transmission and the retransmission using the same transmission time interval and different transmission time interval processing delays, that is, determining the second retransmission process number through an implicit mapping rule or a process number indication signaling is implemented at least in the following manner:

1. determining a second retransmission process number by process number indication signaling

And determining according to the process number indication signaling during retransmission, wherein the bit number of the process number indication signaling is determined according to the maximum value of the maximum process number of the processing time delay used for initial transmission and the maximum process number of the processing time delay used for retransmission.

2. Determining a second retransmission process number by implicit mapping rules

The specific method at least comprises one of the following steps: mapping all process numbers and subframe numbers of the processing time delay used in initial transmission; mapping all process numbers and subframe numbers of processing time delay used in retransmission; mapping all process numbers of processing time delay used in initial transmission, subframe numbers and subframes of configuration signaling for transmitting wireless resource reset, wherein the configuration signaling is high-level signaling containing configuration of same transmission time interval and different processing time delay; and mapping all process numbers of processing time delay used in retransmission, subframe numbers and subframes of configuration signaling for transmitting wireless resource resetting, wherein the configuration signaling is high-level signaling containing configuration of the same transmission time interval and different processing time delays.

Optionally, the above mentioned configuration signaling includes but is not limited to: RRC signaling.

It should be noted that the mapping relationship between the subframe number and the subframe transmitting the configuration signaling of the radio resource reset may be represented by the following formula:

HARQ_Process_ID＝[CURRENT_TTI–(CSS_for_fallback_start_TTI+4)]modulo[number_of_UL_HARQ_processes]；

the CURRENT _ TTI may be represented as follows:

CURRENT_TTI＝[(SFN*number_of_UL_SFs_per_radio_frame)+subframenumber]。

the CSS _ for _ fallback _ start _ TTI may be represented as follows:

CSS_for_fallback_start_TTI＝[(SFN*number_of_UL_SFs_per_radio_frame)+subframe number of CSS for fallback start]。

the SFN is a wireless frame number (the value range of the SFN is 0-1023);

subframe number is the uplink subframe number (e.g., in FDD systems the above parameters range from 0 to 9),

the number _ of _ UL _ HARQ _ processes is the maximum number of processes corresponding to a transmission time interval of 1 ms.

Specifically, in this embodiment, the following scenario is further provided to describe a scheme for determining the second retransmission process number by using an implicit mapping rule or a process number indication signaling:

scene 7

The base station schedules the terminal to transmit new data using a process x in a transmission time interval of 1ms and timing (n +3) ms, where x is any one of 0 to 5. At this time, the transmission time interval is allowed to be shared between different timings, i.e., the timing (n +3) ms is shared with the (n +4) ms process, which is 1 ms. When scheduling transmission uplink data, a process number indication signaling exists in timing (n +3) ms, but no process number indication signaling exists in timing (n +4) ms, and at this time, a process number used in timing (n +4) ms needs to be determined in an implicit transmission mode. The above process sharing scenario occurs when the base station configures the ambiguity period of the terminal timing change through RRC signaling, by scheduling the retransmission data of timing (n +4) ms in the Common Search Space (CSS).

At this time, the process sharing between the processing delays with the same transmission time interval length (i.e. timing (n +3) ms and timing (n +4) ms) is allowed, and because the timing (n +4) ms has no process number indication when uplink data is scheduled, the subframe number, and/or the subframe number and the process number of the RRC configured with the same transmission time interval and different processing delays are in one-to-one correspondence by implicit mapping, and the mapping relation expression is, for example: HARQ _ Process _ ID [ CURRENT _ TTI- (CSS _ for _ fallback _ start _ TTI +4) ] module number _ of _ UL _ HARQ _ Process ═ c rrent _ TTI [ ]

Wherein, CURRENT _ TTI ═ SFN number _ of _ UL _ SFs _ per _ radio _ frame) + subframe number ]. CSS _ for _ fallback _ start _ TTI [ (SFN number _ of _ UL _ SFs _ per _ radio _ frame) + subframe number of CSS for fallback start ]. The SFN is a radio frame number (taking a value of 0 to 1023), the number _ of _ UL _ SFs _ per _ radio _ frame is the number of uplink subframes in each radio frame (for example, the value is 10 in an FDD system), the subframe number is an uplink subframe number (taking a value of 0 to 9 in an FDD system), and the number _ of _ UL _ HARQ _ processes is the maximum number of processes corresponding to a transmission time interval of 1ms, preferably the maximum number of processes corresponding to a timing n +4 is 8, or may also be the maximum number of processes corresponding to a timing n +3 is 6. The subframe number of the CSS for fallback start is a RRC ambiguity period starting subframe, and the determination mode is a subframe where RRC signaling with configuration timing n +3 or n +4 scheduled by the CSS is received. Fig. 6 is a subframe diagram of a further different inter-tti process sharing according to an embodiment of the present disclosure, as shown in fig. 6, when the tti is 1ms, starting from an RRC ambiguity start subframe of a CSS configuration timing n +3 or n +4, every 8 subframes maps 8 processes corresponding to the tti of 1ms (at this time, both timings n +3 and n +4 can work); fig. 7 is a sub-frame diagram of still another process sharing among different tti according to an embodiment of the present disclosure, and as shown in fig. 7, a group of 6 processes corresponding to 1ms tti are mapped every 6 subframes (only the process determination of 6 processes at timing n +3 at timing n +4 is considered at this time).

As shown in fig. 6, the terminal feeds back NACK after receiving data with a transmission time interval of 1ms and a timing of n +3 in a certain subframe n, and at this time, since the RRC reconfigures the timing to n +4 and an ambiguity period may occur, the base station schedules the terminal to transmit data of the same process x with the transmission time interval of 1ms and the timing of n +4 in the ambiguity period, where x is 0 to 5, and at this time, the processing delay of the transmission time interval of 1ms is (n +4) ms, and the maximum number of processes is 8. At this time, when n +4 is timed, no process number signaling indication is provided, and the base station performs implicit transmission rules through the subframe number and the process number of the same transmission time interval and different processing time delays configured by the RRC to ensure that the terminal continuously retransmits the same data packet in the same process. For example: PUSCH data is transmitted in a process 3 in an uplink subframe #1 of a radio frame #0, an RRC fuzzy period, namely RRC configuration timing change, occurs in a downlink subframe #2 of the radio frame #0, at the moment, data of the terminal process 3 needs to be retransmitted in the RRC fuzzy period, and data of the same process 3 is retransmitted in a subframe #8 of the radio frame #0 through an implicit. The retransmission is transmitted with the same redundancy version or different redundancy versions. After receiving the retransmission data, the terminal combines the first transmission data and the retransmission data of the same process.

Optionally, the determination mode of the retransmission process number is configured through high-layer signaling.

Specifically, the mode that the network side device determines the retransmission process number within a period of time through the high-layer signaling configuration terminal is determined only through the process number indication signaling. For example, processes 0-7 are indicated by only 3 bits.

Specifically, the way that the network side device configures the terminal through the high-level signaling to determine the retransmission process number in the other end time is determined through an implicit mapping rule.

Specifically, the method for the network side device to determine the retransmission process number in the other end time through the high-level signaling configuration terminal is determined through the process number indication and the implicit mapping rule, for example, mapping each process number of the maximum R process numbers in the transmission time interval length used for initial transmission and the process number of the maximum T process numbers in the transmission time interval length used for retransmission according to a plurality of rules corresponding to one process number; wherein R > T; the value indicated by the process number signaling during the retransmission with the number of T processes is used for representing one of the processes mapped to the process corresponding to the value.

Through the steps, the problem of data loss caused by process non-sharing when the transmission time interval is changed or the processing time delay of the same transmission time interval is changed in the related technology is solved, and the effect of ensuring the combination of the data packets during initial forwarding and retransmission is further achieved.

Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present disclosure.

Example 2

In this embodiment, a device for determining a retransmission process number is also provided, and the device is used to implement the foregoing embodiments and preferred embodiments, and details are not repeated for what has been described. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Fig. 8 is a block diagram of an apparatus for determining a retransmission process number according to an embodiment of the present disclosure, as shown in fig. 8, the apparatus including:

a determining module 82, configured to determine a first retransmission process number through implicit mapping rules and/or process number indication signaling, where the terminal transmits the same data packet using different transmission time intervals in initial transmission and retransmission; or, determining a second retransmission process number through an implicit mapping rule or a process number indication signaling, wherein the terminal transmits the same data packet between the initial transmission and the retransmission using the same transmission time interval and different transmission time interval processing delays; the implicit mapping rule is used for implicitly indicating the mapping relationship of processes transmitting the same data packet between different transmission time intervals or the mapping relationship of processes transmitting the same data packet between different transmission time interval processing delays of the same transmission time interval.

Optionally, the determining module 82 includes: a first determining unit, configured to determine according to a process number indication signaling during retransmission, where a bit number of the process number indication signaling during retransmission is determined according to a maximum value of a maximum process number of a transmission time interval length used during initial transmission and a maximum process number of the transmission time interval length used during retransmission.

Optionally, the determining module 82 further includes: and a second determining unit, configured to determine according to a process number indication signaling during retransmission, where a bit number of the process number indication signaling is determined according to a maximum process number of a transmission time interval length used for retransmission.

Optionally, the determining module 82 further includes: and a third determining unit, configured to determine according to a process number indication signaling and an implicit mapping rule during retransmission, where a bit number of the process number indication signaling is determined according to a maximum process number of a transmission time interval length used for retransmission.

Optionally, the determining module 82 further includes: and a fourth determining unit, configured to determine according to the process number indication signaling during retransmission, where a bit number of the process number indication signaling is determined according to a maximum value of a maximum process number of the processing delay used for initial transmission and a maximum process number of the processing delay used for retransmission.

Optionally, the determining module 82 further includes: a fifth determining unit configured to perform an operation of one of: mapping all process numbers and subframe numbers of processing time delay used in initial transmission; mapping all process numbers and subframe numbers of processing time delay used in retransmission; mapping all process numbers of processing time delay used in initial transmission, subframe numbers and subframes of configuration signaling for transmitting wireless resource reset, wherein the configuration signaling is high-level signaling containing configuration of same transmission time interval and different processing time delay; and mapping all process numbers of processing time delay used in retransmission, subframe numbers and subframes of configuration signaling for transmitting wireless resource resetting, wherein the configuration signaling is high-level signaling containing configuration of the same transmission time interval and different processing time delays.

It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.

Example 3

In this embodiment, a system for determining a retransmission process number is also provided, and the system is used to implement the foregoing embodiments and preferred embodiments, and details are not repeated for what has been described.

Fig. 9 is a block diagram of a system for determining a retransmission process according to an embodiment of the present disclosure, as shown in fig. 9, the system includes: a network side device 92 and a terminal 94.

The network side device 92 is configured to determine a first retransmission process number through an implicit mapping rule and/or a process number indication signaling, or determine a second retransmission process number through an implicit mapping rule or a process number indication signaling;

a terminal 94, configured to transmit the same data packet at different transmission time intervals for initial transmission and retransmission according to the first retransmission process number, where the first retransmission process number is determined by an implicit mapping rule and/or a process number indication signaling; or, according to the second retransmission process number determined by the network side device 92, the same data packet is transmitted between the processing delays of the initial transmission and the retransmission using the same transmission time interval and different transmission time intervals; the implicit mapping rule is used for implicitly indicating the mapping relationship of processes transmitting the same data packet between different transmission time intervals or the mapping relationship of processes transmitting the same data packet between different transmission time interval processing delays of the same transmission time interval.

Example 4

Embodiments of the present disclosure also provide a storage medium. Alternatively, in the present embodiment, the storage medium may be configured to store program codes for performing the following steps:

Optionally, in this embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.

It will be apparent to those skilled in the art that the modules or steps of the present disclosure described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. As such, the present disclosure is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A method for determining a retransmission process number, comprising:

determining a first retransmission process number through implicit mapping rules and/or process number indication signaling, wherein the terminal transmits the same data packet by using different transmission time intervals in initial transmission and retransmission;

or,

determining a second retransmission process number through an implicit mapping rule or a process number indication signaling, wherein the terminal transmits the same data packet between the initial transmission and the retransmission by using the same transmission time interval and different transmission time interval processing time delays;

the implicit mapping rule is used for implicitly indicating the mapping relationship of processes transmitting the same data packet between different transmission time intervals or the mapping relationship of processes transmitting the same data packet between different transmission time interval processing delays of the same transmission time interval.

2. The method of claim 1, wherein determining the first retransmission process number via process number indication signaling comprises at least one of:

determining according to a process number indication signaling during retransmission, wherein the bit number of the process number indication signaling during retransmission is determined according to the maximum process number of the transmission time interval length used during initial transmission and the maximum process number of the transmission time interval length used during retransmission;

and determining according to the process number indication signaling during retransmission, wherein the bit number of the process number indication signaling during retransmission is determined according to the sum of the maximum process number of the transmission time interval length used during initial transmission and the maximum process number of the transmission time interval length used during retransmission.

3. The method of claim 2, wherein the method comprises at least one of:

when the maximum number of processes of the transmission time interval length used for the initial transmission is X and the maximum number of processes of the transmission time interval length used for the retransmission is Y, the maximum value of the maximum number of processes of the transmission time interval length used for the initial transmission and the maximum number of processes of the transmission time interval length used for the retransmission is not less than

The maximum process number of the transmission time interval length used in the initial transmission is X, and the transmission time used in the retransmission is XWhen the maximum process number of the interval length is Y, the sum of the maximum process number of the transmission time interval length used in the initial transmission and the maximum process number of the transmission time interval length used in the retransmission is not less than

4. A method according to claim 2 or 3, characterized in that the method is further adapted to determine the number of the initial process.

5. The method of claim 2, further comprising at least one of:

the method comprises the following steps of using a short transmission time interval in initial transmission and using a 1ms transmission time interval in retransmission, wherein the processing delay of the 1ms transmission time interval at least comprises the following steps: (n +4) ms and/or (n +3) ms; or,

using a 1ms transmission time interval at initial transmission and a short transmission time interval at retransmission, wherein the short transmission time interval at least comprises: 2 orthogonal frequency division multiplexing symbols and/or 1 slot in a subframe.

6. The method of claim 1, wherein determining the first retransmission process number via process number indication signaling, further comprises:

and determining according to the process number indication signaling during retransmission, wherein the bit number of the process number indication signaling is determined according to the maximum process number of the transmission time interval length used by retransmission.

7. The method of claim 1, wherein determining the first retransmission process number by implicit mapping rules and process number indication signaling comprises:

and determining according to the process number indication signaling and the implicit mapping rule during retransmission, wherein the bit number of the process number indication signaling is determined according to the maximum process number of the transmission time interval length used by retransmission.

8. The method of claim 7, wherein the determining according to the process number indication signaling and the implicit mapping rule at the time of retransmission comprises:

mapping each process number of the maximum L processes in the transmission time interval length used for initial transmission and the process number of the maximum M processes in the transmission time interval length used for retransmission according to a plurality of rules corresponding to one process; wherein, L > M;

the value indicated by the process number signaling during retransmission with the number of M processes is used for representing one of the processes mapped to the process corresponding to the value.

9. The method of claim 7, wherein the determining according to the process number indication signaling and the implicit mapping rule at the time of retransmission further comprises:

all process numbers in the process numbers with P process numbers in the transmission time interval length used for initial transmission have a one-to-one mapping relation with the subframe numbers;

process number indication signaling of a process number with Q process numbers in the transmission time interval length used for retransmission is effective in a corresponding part of subframes in the indication range of the process number indication signaling; the process number beyond the indication range of the process number indication signaling is determined according to the mapping of the corresponding subframe number;

wherein P > Q.

10. The method according to claim 9, wherein the number of the partial sub-frames is a maximum number of processes a of a transmission time interval length used by the retransmission; and the positions of the partial subframes are the subframes corresponding to the process 0 to the process (A-1).

11. The method of claim 7, wherein the determining according to the process number indication signaling and the implicit mapping rule at the time of retransmission further comprises:

all process numbers in the process numbers with K process numbers in the transmission time interval length used for initial transmission have a many-to-one mapping relation with the subframe number;

and determining at least one process in the plurality of processes mapped to the subframe according to the value indicated by the process number indication signaling.

12. The method of claim 11, wherein the many-to-one mapping is represented by at least:wherein N is a process number determined by a subframe number, SFN is a radio frame number, h is a subframe number in a radio frame, k represents a current subframe, N is a maximum process number of a short transmission time interval, and i is 0,1, 2.

13. The method of claim 1, wherein determining the second retransmission process number via process number indication signaling comprises:

14. The method of claim 1, wherein determining the second retransmission process number by implicit mapping rules comprises at least one of:

mapping all process numbers and subframe numbers of the processing time delay used in initial transmission;

mapping all process numbers and subframe numbers of processing time delay used in retransmission;

mapping all process numbers of processing time delay used in initial transmission with subframe numbers and subframes of configuration signaling for transmitting wireless resource reset, wherein the configuration signaling is high-level signaling containing configuration of same transmission time interval and different processing time delay;

and mapping all process numbers of the processing time delay used in retransmission with subframe numbers and subframes of configuration signaling for transmitting wireless resource resetting, wherein the configuration signaling is high-level signaling containing configuration of the same transmission time interval and different processing time delays.

15. The method of claim 1, further comprising: configuring a determination mode of the retransmission process number through high-layer signaling, wherein the determination mode at least comprises one of the following modes: and the implicit mapping rule is used for determining, and the process number is used for indicating signaling determination.

16. An apparatus for determining a retransmission process number, comprising:

a determining module, configured to determine a first retransmission process number through an implicit mapping rule and/or a process number indication signaling, where the terminal transmits the same data packet using different transmission time intervals for initial transmission and retransmission; or, determining a second retransmission process number through an implicit mapping rule or a process number indication signaling, wherein the terminal transmits the same data packet between the initial transmission and the retransmission using the same transmission time interval and different transmission time interval processing delays; the implicit mapping rule is used for implicitly indicating the mapping relationship of processes transmitting the same data packet between different transmission time intervals or the mapping relationship of processes transmitting the same data packet between different transmission time interval processing delays of the same transmission time interval.

17. The apparatus of claim 16, wherein the means for determining comprises,

a first determining unit, configured to determine according to a process number indication signaling at the time of retransmission, where a bit number of the process number indication signaling at the time of retransmission is determined according to a maximum value of a maximum process number that a transmission time interval length used at the time of initial transmission and a maximum process number that the transmission time interval length used at the time of retransmission has, and/or is determined according to the process number indication signaling at the time of retransmission, where the bit number of the process number indication signaling at the time of retransmission is determined according to a sum of the maximum process number that the transmission time interval length used at the time of initial transmission and the maximum process number that the transmission time interval length used at the time of retransmission has.

18. The apparatus of claim 16, wherein the determining module further comprises,

and a second determining unit, configured to determine according to a process number indication signaling during retransmission, where a bit number of the process number indication signaling is determined according to a maximum process number of a transmission time interval length used for retransmission.

19. The apparatus of claim 16, wherein the determining module further comprises,

and a third determining unit, configured to determine according to a process number indication signaling and an implicit mapping rule during retransmission, where a bit number of the process number indication signaling is determined according to a maximum process number of a transmission time interval length used for retransmission.

20. The apparatus of claim 16, wherein the determining module further comprises,

and a fourth determining unit, configured to determine according to the process number indication signaling during retransmission, where a bit number of the process number indication signaling is determined according to a maximum value of a maximum process number of the processing delay used for initial transmission and a maximum process number of the processing delay used for retransmission.

21. The apparatus of claim 16, wherein the determining module further comprises,

a fifth determining unit configured to perform an operation of one of: mapping all process numbers and subframe numbers of processing time delay used in initial transmission; mapping all process numbers and subframe numbers of processing time delay used in retransmission; mapping all process numbers of processing time delay used in initial transmission, subframe numbers and subframes of configuration signaling for transmitting wireless resource reset, wherein the configuration signaling is high-level signaling containing configuration of same transmission time interval and different processing time delay; and mapping all process numbers of processing time delay used in retransmission, subframe numbers and subframes of configuration signaling for transmitting wireless resource resetting, wherein the configuration signaling is high-level signaling containing configuration of the same transmission time interval and different processing time delays.

22. The apparatus of claim 16, wherein the determining module further comprises,

a sixth determining unit, configured to determine that a many-to-one mapping relationship exists between all process numbers and subframe numbers in the process numbers with the M process numbers in the transmission time interval length used for initial transmission; and determining at least one process in the plurality of processes mapped to the subframe according to the value indicated by the process number indication signaling.

23. A system for determining a retransmission process number, comprising:

the network side equipment is used for determining a first retransmission process number through an implicit mapping rule and/or a process number indication signaling, or determining a second retransmission process number through the implicit mapping rule or the process number indication signaling;

the terminal is used for transmitting the same data packet by using different transmission time intervals in initial transmission and retransmission according to the first retransmission process number, wherein the first retransmission process number is determined by an implicit mapping rule and/or a process number indication signaling; or, according to a second retransmission process number determined by the network side equipment, transmitting the same data packet between the processing time delays of the initial transmission and the retransmission by using the same transmission time interval and different transmission time intervals; the implicit mapping rule is used for implicitly indicating the mapping relationship of processes transmitting the same data packet between different transmission time intervals or the mapping relationship of processes transmitting the same data packet between different transmission time interval processing delays of the same transmission time interval.