CN113498043A - Method and equipment for determining HARQ (hybrid automatic repeat request) process number - Google Patents

Method and equipment for determining HARQ (hybrid automatic repeat request) process number Download PDF

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Publication number
CN113498043A
CN113498043A CN202010260423.2A CN202010260423A CN113498043A CN 113498043 A CN113498043 A CN 113498043A CN 202010260423 A CN202010260423 A CN 202010260423A CN 113498043 A CN113498043 A CN 113498043A
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direct communication
harq process
process number
authorized
sending terminal
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CN113498043B (en
Inventor
赵亚利
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the application provides a method and equipment for determining a HARQ process number, and particularly provides a scheme for determining the HARQ process number authorized by pre-configuration of a direct communication interface, so that data combination and decoding are correctly performed when data retransmission is performed. The method comprises the steps that a direct communication sending terminal determines direct communication interface auxiliary information, and the direct communication interface auxiliary information is used for assisting a direct communication receiving terminal corresponding to the direct communication sending terminal to determine HARQ process numbers which are pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process; and the direct communication sending terminal sends the auxiliary information of the direct communication interface to the direct communication receiving terminal so that the direct communication receiving terminal determines the HARQ process number used by each HARQ process authorized by the pre-configuration of the direct communication sending terminal according to the auxiliary information of the direct communication interface after receiving the auxiliary information of the direct communication interface sent by the direct communication sending terminal.

Description

Method and equipment for determining HARQ (hybrid automatic repeat request) process number
Technical Field
The present application relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for determining a HARQ process number.
Background
Current communication means include cellular network communication and direct communication; wherein:
the cellular network communication is that the sending terminal and the receiving terminal communicate through network equipment, and at the moment, the terminal and the network equipment transmit uplink and downlink data/control information through a Uu interface. Fig. 1 is a diagram illustrating cellular network communication in the related art.
Direct communication is a way in which a terminal in the vicinity can perform data transmission through a direct communication link (also referred to as Sidelink) in a short distance range, that is, a transmitting terminal and a receiving terminal perform data transmission through the direct communication link without passing through a network side device. The wireless interface to which the sildelink link corresponds is referred to as a direct communication interface, also referred to as the sildelink interface or the PC5 interface. Fig. 2 is a diagram illustrating direct communication in the related art.
Currently, there are two resource allocation modes for the direct communication interface: a resource allocation mode of network scheduling and a terminal self-selection resource allocation mode:
the resource allocation mode of network scheduling is a mode that network equipment directly allocates direct communication interface resources for a terminal; the resource allocation mode selected autonomously by the terminal selects the resources sent on the direct communication interface for the terminal itself from a resource pool, which may be preconfigured or configured by the network through broadcast or dedicated signaling.
The resource allocation patterns for network scheduling can be further divided into dynamic scheduling and pre-configured grants. Dynamic scheduling is the need to dynamically allocate resources each time data is transmitted. The pre-configured grant may be periodically validated after resource configuration.
For dynamic scheduling, the direct communication interface transmits direct communication interface Control Information (SCI) each time. The SCI includes HARQ (Hybrid Automatic Repeat Request) process number indication information, and the direct communication receiving terminal can identify initial transmission and retransmission of the same process according to the HARQ process number indication information.
However, for the pre-configuration authorization, the direct communication interface may not send SCI or only sends SCI once at the activation time of the pre-configuration authorization, and the pre-configuration authorization that takes effect in the subsequent period does not have SCI sending, so how to ensure that the receiving end can identify the initial transmission and the retransmission of the same HARQ process is considered, thereby performing HARQ combining. There is currently no clear solution to this problem.
Disclosure of Invention
The application provides a method and equipment for determining the number of an HARQ process, and provides a scheme for determining the number of the HARQ process authorized by the pre-configuration of a direct communication interface, so as to ensure that data combination and decoding are correctly performed when data retransmission is performed.
In a first aspect, an embodiment of the present application provides a method for determining a HARQ process number, where the method includes:
the method comprises the steps that a direct communication sending terminal determines direct communication interface auxiliary information, and the direct communication interface auxiliary information is used for assisting a direct communication receiving terminal corresponding to the direct communication sending terminal to determine HARQ process numbers which are pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process;
the direct communication transmitting terminal transmits the direct communication interface auxiliary information to the direct communication receiving terminal.
In the application, the direct communication sending terminal determines the auxiliary information of the direct communication interface and sends the auxiliary information of the direct communication interface to the direct communication receiving terminal, and the auxiliary information of the direct communication interface is used for assisting the direct communication receiving terminal corresponding to the direct communication sending terminal to determine the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process, so that the direct communication receiving terminal determines the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process according to the auxiliary information of the direct communication interface sent by the direct communication sending terminal.
In a possible implementation manner, before the direct communication sending terminal determines the direct communication interface auxiliary information, the direct communication sending terminal determines, by using the following formula, that the direct communication sending terminal pre-configures an HARQ process number authorized to be used by each HARQ process:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization, and i is the index of pre-configuration authorizationNumber nrofHARQ-ProcessesiNumber of HARQ processes corresponding to a pre-configured grant, HARQoffsetiThe difference between the number of the first HARQ process corresponding to the pre-configured grant and 0.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
alternatively, the direct communication interface assistance information comprises one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In the application, the direct communication sending terminal determines, according to the formula, the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process, and determines, according to the auxiliary information of the direct communication interface, the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process, in order to ensure that the direct communication receiving terminal determines, according to the auxiliary information of the direct communication interface, that the direct communication sending terminal is pre-configured and authorized to be used by each HARQ process, the auxiliary information of the direct communication interface should include at least one parameter used for determining the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process, or include the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process, so that the application provides specific auxiliary information of the direct communication interface.
In a possible implementation manner, before the direct communication sending terminal determines the direct communication interface auxiliary information, the method further includes:
the direct communication sending terminal determines the HARQ process number corresponding to each HARQ process authorized by the direct communication sending terminal through the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization, i is the index number of pre-configuration authorization, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant, HARQoffsetiA difference value between the number of the first HARQ process corresponding to the pre-configuration authorization and 0;
and the direct communication sending terminal performs HARQ process number mapping on HARQ process numbers corresponding to each HARQ process which are pre-configured and authorized by the direct communication sending terminal, and takes the first target HARQ process number mapped by each HARQ process number as the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and used by each HARQ process.
In a possible implementation manner, the performing, by the direct communication sending terminal, HARQ process number mapping on HARQ process numbers corresponding to each HARQ process by the direct communication sending terminal through pre-configuration authorization includes:
the method comprises the steps that HARQ process numbers corresponding to any HARQ process are authorized to be pre-configured for a direct communication sending terminal, if the HARQ process numbers are not occupied currently at the direct communication sending terminal, the direct communication sending terminal determines that a first target HARQ process number is the same as the HARQ process number corresponding to the HARQ process, or the direct communication sending terminal determines that the first target HARQ process number is any HARQ process number which is idle currently at the direct communication sending terminal;
and if the HARQ process number is occupied at the direct communication sending terminal, the direct communication sending terminal determines that the first target HARQ process number is any HARQ process number which is idle at the direct communication sending terminal.
In the application, in order to avoid the conflict between the HARQ process number authorized by the direct communication sending terminal for pre-configuration and the HARQ process number used by dynamic scheduling, and affect the data transmission of dynamic scheduling, after the HARQ process number corresponding to each HARQ process authorized by the direct communication sending terminal for pre-configuration is determined through the formula, the HARQ process number mapping is performed on the determined HARQ process number corresponding to each HARQ process, and the determined HARQ process number corresponding to each HARQ process is mapped to the idle HARQ process number.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
the direct communication sending terminal pre-configures an offset value between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process;
alternatively, the direct communication interface assistance information comprises one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In the application, when determining that the direct communication sending terminal is pre-configured with the HARQ process number authorized to be used by each HARQ process, the direct communication sending terminal first determines, according to a formula, the HARQ process number corresponding to each HARQ process that the direct communication sending terminal is pre-configured with the authorization, and then performs HARQ process mapping on the determined HARQ process number corresponding to the HARQ process to obtain the HARQ process number authorized to be used by each HARQ process that the direct communication sending terminal is pre-configured with. In order to ensure that the direct communication receiving terminal can determine the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process according to the direct communication interface auxiliary information, the direct communication interface auxiliary information comprises at least one of a parameter used for determining the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and an offset value of the HARQ process number before and after mapping, or directly comprises the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process; therefore, the application provides specific auxiliary information of the direct communication interface.
In one possible implementation manner, a direct communication receiving terminal that a direct communication sending terminal sends direct communication interface assistance information to the direct communication sending terminal includes:
the direct communication sending terminal sends the auxiliary Information of the direct communication interface to a direct communication receiving terminal of the direct communication sending terminal through SCI (Sidelink Control Information); or
The direct communication sending terminal sends the auxiliary information of the direct communication interface to a direct communication receiving terminal of the direct communication sending terminal through a PC5-RRC (Radio Resource Control) signaling; or
The direct communication transmitting terminal transmits the auxiliary information of the direct communication interface to a direct communication receiving terminal of the direct communication transmitting terminal through a MAC CE (MAC: Medium Access Control; CE: Control Element).
In the application, a transmission mode that the direct communication sending terminal transmits the auxiliary information of the direct communication interface to the direct communication receiving terminal is provided so as to ensure that the direct communication sending terminal smoothly transmits the auxiliary information of the direct communication interface to the direct communication receiving terminal.
In a second aspect, an embodiment of the present application provides a method for determining a HARQ process number, where the method includes:
the direct communication receiving terminal receives the direct communication interface auxiliary information sent by the direct communication sending terminal corresponding to the direct communication receiving terminal;
and the direct communication receiving terminal determines the HARQ process number which is used by each HARQ process and authorized by the pre-configuration of the direct communication sending terminal according to the auxiliary information of the direct communication interface.
In the application, the direct communication receiving terminal receives the auxiliary information of the direct communication interface sent by the direct communication sending terminal, determines the HARQ process number used by each HARQ process through pre-configuration authorization of the direct communication sending terminal according to the auxiliary information of the direct communication interface, and provides a specific scheme aiming at the same pre-configuration authorization and determining the mapping relation between the HARQ process number used by each HARQ process of the direct communication receiving terminal and the HARQ process number used by each HARQ process of the direct communication sending terminal.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In a possible implementation manner, the determining, by the direct communication receiving terminal, the HARQ process number that each HARQ process is authorized to use by the direct communication sending terminal in a pre-configuration manner according to the direct communication interface auxiliary information includes:
the direct communication receiving terminal directly determines the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is used by each HARQ process according to the index number of the pre-configured authorization in the auxiliary information of the direct communication interface and the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is used by each HARQ process; or,
and the direct communication receiving terminal directly determines the HARQ process number which is used by each HARQ process and authorized by the direct communication sending terminal in the direct communication interface auxiliary information according to the HARQ process number which is used by each HARQ process and authorized by the direct communication sending terminal in the direct communication interface auxiliary information in a pre-configuration mode.
In this application, when the direct communication interface auxiliary information includes the HARQ process number that the direct communication sending terminal pre-configures and authorizes each HARQ process to use, the direct communication receiving terminal directly uses the HARQ process number that the direct communication sending terminal pre-configures and authorizes each HARQ process to use in the direct communication interface auxiliary information as the HARQ process number that the direct communication sending terminal pre-configures and authorizes each HARQ process to use.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ process numbers corresponding to authorization;
the difference between the first HARQ process number corresponding to the grant and 0 is preconfigured.
In a possible implementation manner, the determining, by the direct communication receiving terminal, the HARQ process number that each HARQ process is authorized to use by the direct communication sending terminal in a pre-configuration manner according to the direct communication interface auxiliary information includes:
the direct communication receiving terminal determines the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process according to the auxiliary information of the direct communication interface by the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization in the auxiliary information of the direct communication interface, i is the index number of pre-configuration authorization in the auxiliary information of the direct communication interface, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant in direct communication interface assistance information, HARQoffsetiThe difference between the number of the first HARQ process corresponding to the pre-configured grant and 0.
In the application, when the auxiliary information of the direct communication interface comprises a pre-configured authorized index number; pre-configuring a period of the grant; pre-configuring the number of HARQ process numbers corresponding to authorization; when at least one difference value between the first HARQ process number corresponding to the pre-configuration authorization and 0 is obtained, the direct communication receiving terminal determines the HARQ process number used by each HARQ process through the pre-configuration authorization of the direct communication sending terminal according to the formula.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
the direct communication sending terminal pre-configures an offset value between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process.
In a possible implementation manner, the determining, by the direct communication receiving terminal, the HARQ process number that each HARQ process is authorized to use by the direct communication sending terminal in a pre-configuration manner according to the direct communication interface auxiliary information includes:
the direct communication receiving terminal determines the HARQ process number corresponding to each HARQ process through the following formula according to the auxiliary information of the direct communication interface and through the pre-configuration authorization of the direct communication sending terminal:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization in the auxiliary information of the direct communication interface, i is the index number of pre-configuration authorization in the auxiliary information of the direct communication interface, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant in direct communication interface assistance information, HARQoffsetiA difference value between a first HARQ process number corresponding to a pre-configuration authorization in the auxiliary information of the direct communication interface and 0;
and the direct communication receiving terminal performs HARQ process number mapping on HARQ process numbers corresponding to each HARQ process which are pre-configured and authorized by the direct communication sending terminal, and takes the first target HARQ process number mapped by each HARQ process number as the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and used by each HARQ process.
In the application, when the auxiliary information of the direct communication interface comprises a pre-configured authorized index number; pre-configuring a period of the grant; pre-configuring the number of HARQ processes corresponding to authorization; pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0; when the direct communication sending terminal pre-configures at least one of the HARQ process number corresponding to each HARQ process authorized and the deviation value between the HARQ process numbers used by each HARQ process authorized by the direct communication sending terminal, the direct communication receiving terminal determines the HARQ process number corresponding to each HARQ process authorized by the direct communication sending terminal pre-configured according to at least one of the first four kinds of information, and performs HARQ process number mapping on the determined HARQ process number corresponding to each HARQ process to obtain the HARQ process number used by each HARQ process authorized by the direct communication sending terminal pre-configured.
In the application, the direct communication receiving terminal receives different direct communication interface auxiliary information, and determines that the direct communication sending terminal has different ways of pre-configuring the HARQ process number authorized to be used by each HARQ process, and the direct communication receiving terminal specifically provides three schemes for pre-configuring the HARQ process number authorized to be used by each HARQ process by the direct communication sending terminal according to the different direct communication interface auxiliary information.
In a possible implementation manner, the direct communication receiving terminal performs HARQ process number mapping on HARQ process numbers corresponding to each HARQ process and granted by the direct communication sending terminal in a pre-configuration manner, including:
the direct communication receiving terminal determines an offset value corresponding to each HARQ process which is pre-configured and authorized by the direct communication sending terminal according to the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is used by the direct communication sending terminal in the auxiliary information of the direct communication interface;
and the direct communication receiving terminal takes the sum of the HARQ process number corresponding to each HARQ process and the offset value corresponding to the HARQ process, which is pre-configured and authorized by the direct communication sending terminal, as the HARQ process number used by each HARQ process, which is pre-configured and authorized by the direct communication sending terminal.
In this application, when the direct communication receiving terminal determines, according to the direct communication interface auxiliary information and through the above formula, that the direct communication sending terminal preconfigured and authorized the HARQ process number corresponding to each HARQ process, the direct communication receiving terminal further maps the determined HARQ process number corresponding to each HARQ process preconfigured and authorized by the direct communication sending terminal according to the offset value between the HARQ process number corresponding to each HARQ process preconfigured and authorized by the direct communication sending terminal in the direct communication interface auxiliary information and the HARQ process number used by each HARQ process preconfigured and authorized by the direct communication sending terminal. In the mapping process, each direct communication sending terminal pre-configures an offset value authorizing each HARQ process to correspond to, which is an offset value in the auxiliary information of the direct communication interface, so that the mapped first target HARQ process number is the sum of the HARQ process number authorizing each HARQ process pre-configured by the direct communication sending terminal and the offset value in the auxiliary information of the direct communication interface.
In a possible implementation manner, after the direct communication receiving terminal determines, according to the direct communication interface auxiliary information, that the direct communication sending terminal pre-configures an HARQ process number authorized to be used by each HARQ process, the method further includes:
and the direct communication receiving terminal performs HARQ process number mapping on the HARQ process numbers which are pre-configured and authorized by the direct communication sending terminal and are used by each HARQ process, and the second target HARQ process numbers which are mapped by each HARQ process number are used as the HARQ process numbers which are pre-configured and authorized by the direct communication receiving terminal and used by each HARQ process.
In a possible implementation manner, the method for a direct communication receiving terminal to perform HARQ process number mapping on HARQ process numbers which are pre-configured and authorized by a direct communication sending terminal to be used by each HARQ process, and using a second target HARQ process number after each HARQ process number mapping as a HARQ process number which is pre-configured and authorized by the direct communication receiving terminal to be used by each HARQ process includes:
the method comprises the steps that HARQ process numbers authorized to be used by any HARQ process are pre-configured for a direct communication sending terminal, if the HARQ process numbers are not occupied at the current time of a direct communication receiving terminal, the direct communication receiving terminal determines that a second target HARQ process number is the same as the HARQ process number corresponding to the HARQ process, or the direct communication receiving terminal determines that the second target HARQ process number is any HARQ process number which is idle at the current time of the direct communication receiving terminal;
and if the HARQ process number is occupied at the current direct communication receiving terminal, the second target HARQ process number of the direct communication receiving terminal is any idle HARQ process number of the direct communication receiving terminal.
In this application, the direct communication interface auxiliary information is used to assist the direct communication receiving terminal to determine the HARQ process number that the direct communication sending terminal is pre-configured and authorized to use by each HARQ process, so that the HARQ process number determined by the direct communication receiving terminal according to the direct communication interface auxiliary information is the HARQ process number that the direct communication sending terminal is pre-configured and authorized to use by each HARQ process. Further, after determining that the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process, the direct communication receiving terminal executes HARQ process number mapping, maps the HARQ process number mapping to any idle HARQ process number of the direct communication receiving terminal, and uses the mapped second target HARQ process number as the HARQ process number pre-configured and authorized to be used by each HARQ process by the direct communication receiving terminal, wherein the specific mapping scheme is given.
In one possible implementation manner, the method for receiving the direct communication interface assistance information sent by the direct communication sending terminal by the direct communication receiving terminal includes:
the direct communication receiving terminal receives the auxiliary information of the direct communication interface sent by the direct communication sending terminal through the SCI; or
The direct communication receiving terminal receives the direct communication interface auxiliary information sent by the direct communication sending terminal through a PC5-RRC signaling; or
The direct communication receiving terminal receives the direct communication interface assistance information transmitted by the direct communication transmitting terminal through the MAC CE.
In the application, a specific way that the direct communication receiving terminal receives the direct communication interface auxiliary information sent by the direct communication sending terminal is given, so as to further determine, according to the received direct communication interface auxiliary information, that the direct communication interface is preconfigured with the HARQ process number authorized to be used by each HARQ process.
In a third aspect, an embodiment of the present application provides a sending terminal for determining a HARQ process number, where the sending terminal includes: a processor, a memory, and a transceiver;
the processor is used for reading the program in the memory and executing the following processes:
determining auxiliary information of a direct communication interface, wherein the auxiliary information of the direct communication interface is used for assisting a direct communication receiving terminal corresponding to a direct communication sending terminal to determine an HARQ process number which is used by each HARQ process and authorized by the pre-configuration of the direct communication sending terminal;
and transmitting the direct communication interface auxiliary information to the direct communication receiving terminal through the transceiver.
In one possible implementation, the processor is further configured to:
determining the HARQ process number which is authorized to be used by each HARQ process through the pre-configuration of the direct communication sending terminal by the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization, i is the index number of pre-configuration authorization, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant, HARQoffsetiThe difference between the number of the first HARQ process corresponding to the pre-configured grant and 0.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
alternatively, the direct communication interface assistance information comprises one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In one possible implementation, the processor is further configured to:
determining the HARQ process number corresponding to each HARQ process authorized by the direct communication sending terminal through the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization, i is the index number of pre-configuration authorization, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant, HARQoffsetiA difference value between the number of the first HARQ process corresponding to the pre-configuration authorization and 0;
and performing HARQ process number mapping on HARQ process numbers corresponding to each HARQ process authorized by the pre-configuration of the direct communication sending terminal, and taking the first target HARQ process number mapped by each HARQ process number as the HARQ process number authorized by the pre-configuration of the direct communication sending terminal to use for each HARQ process.
In one possible implementation, the processor is specifically configured to:
the method comprises the steps that HARQ process numbers corresponding to any HARQ process are authorized to a direct communication sending terminal in a pre-configuration mode, if the HARQ process numbers are not occupied at the current time of the direct communication sending terminal, the first target HARQ process numbers are determined to be the same as the HARQ process numbers corresponding to the HARQ processes, or the first target HARQ process numbers are determined to be any idle HARQ process numbers of the direct communication sending terminal at the current time;
and if the HARQ process number is occupied at the current direct communication sending terminal, determining that the first target HARQ process number is any HARQ process number which is idle at the current direct communication sending terminal.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
the direct communication sending terminal pre-configures an offset value between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process;
alternatively, the direct communication interface assistance information comprises one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In one possible implementation, the processor is specifically configured to:
transmitting the direct communication interface assistance information to a direct communication receiving terminal of the direct communication transmitting terminal through the SCI; or
Transmitting the direct communication interface assistance information to a direct communication receiving terminal of the direct communication transmitting terminal through PC5-RRC signaling; or
The direct communication interface assistance information is transmitted to a direct communication reception terminal of the direct communication transmission terminal through the MAC CE.
In a fourth aspect, an embodiment of the present application provides a receiving terminal for determining a HARQ process number, where the receiving terminal includes: a processor, a memory, and a transceiver;
the processor is used for reading the program in the memory and executing the following processes:
receiving the auxiliary information of the direct communication interface sent by a direct communication sending terminal corresponding to a direct communication receiving terminal through a receiver;
and determining the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process according to the auxiliary information of the direct communication interface.
The direct communication interface assistance information comprises one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In one possible implementation, the processor is specifically configured to:
directly determining the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is used by each HARQ process according to the index number of the pre-configured authorization in the auxiliary information of the direct communication interface and the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is used by each HARQ process; or,
and directly determining the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process according to the HARQ process number which is pre-configured and authorized by the direct communication sending terminal in the auxiliary information of the direct communication interface.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ process numbers corresponding to authorization;
the difference between the first HARQ process number corresponding to the grant and 0 is preconfigured.
In one possible implementation, the processor is specifically configured to:
according to the auxiliary information of the direct communication interface, determining the HARQ process number which is used by each HARQ process and is authorized by the pre-configuration of the direct communication sending terminal through the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT TimePeriod is the period of pre-configuration authorization in the auxiliary information of the direct communication interface, i is the index number of pre-configuration authorization in the auxiliary information of the direct communication interface, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant in direct communication interface assistance information, HARQoffsetiA difference between a first HARQ process number corresponding to the pre-configured grant in the direct communication interface assistance information and 0.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
the direct communication sending terminal pre-configures an offset value between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process.
In one possible implementation, the processor is specifically configured to:
according to the auxiliary information of the direct communication interface, determining the HARQ process number corresponding to each HARQ process which is pre-configured and authorized by the direct communication sending terminal through the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization in the auxiliary information of the direct communication interface, i is the index number of pre-configuration authorization in the auxiliary information of the direct communication interface, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant in direct communication interface assistance information, HARQoffsetiA difference value between a first HARQ process number corresponding to a pre-configuration authorization in the auxiliary information of the direct communication interface and 0;
and performing HARQ process number mapping on HARQ process numbers corresponding to each HARQ process authorized by the pre-configuration of the direct communication sending terminal, and taking the first target HARQ process number mapped by each HARQ process number as the HARQ process number authorized by the pre-configuration of the direct communication sending terminal to use for each HARQ process.
In one possible implementation, the processor is specifically configured to:
determining an offset value corresponding to each HARQ process which is pre-configured and authorized by the direct communication sending terminal according to the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is corresponding to each HARQ process and used by the direct communication sending terminal;
and the sum of the HARQ process number corresponding to each HARQ process and the offset value corresponding to the HARQ process, which is pre-configured and authorized by the direct communication sending terminal, is used as the HARQ process number used by each HARQ process, which is pre-configured and authorized by the direct communication sending terminal.
In one possible implementation, the processor is further configured to:
and performing HARQ process number mapping on the HARQ process numbers which are pre-configured and authorized by the direct communication sending terminal and used by each HARQ process, and taking the second target HARQ process number mapped by each HARQ process number as the HARQ process number which is pre-configured and authorized by the direct communication receiving terminal and used by each HARQ process.
In one possible implementation, the processor is specifically configured to:
the method comprises the steps that HARQ process numbers authorized to be used by any HARQ process are pre-configured for a direct communication sending terminal, if the HARQ process numbers are not occupied at the current time of a direct communication receiving terminal, the second target HARQ process numbers are determined to be the same as the HARQ process numbers used by the HARQ processes, or the second target HARQ process numbers are determined to be any idle HARQ process numbers of the direct communication receiving terminal;
and if the HARQ process number is occupied at the direct communication receiving terminal currently, determining that the second target HARQ process number is any HARQ process number which is idle at the direct communication receiving terminal currently.
In one possible implementation, the processor is specifically configured to:
receiving direct communication interface auxiliary information transmitted by a direct communication transmitting terminal through an SCI; or
Receiving direct communication interface auxiliary information sent by a direct communication sending terminal through PC5-RRC signaling; or
And receiving the direct communication interface auxiliary information transmitted by the direct communication transmitting terminal through the MAC CE.
In a fifth aspect, an embodiment of the present application provides a sending terminal for determining a HARQ process number, where the sending terminal includes: the device comprises a first determining module and a sending module; wherein:
the first determining module is to: determining auxiliary information of a direct communication interface, wherein the auxiliary information of the direct communication interface is used for assisting a direct communication receiving terminal corresponding to a direct communication sending terminal to determine an HARQ process number which is used by each HARQ process and authorized by the pre-configuration of the direct communication sending terminal;
the sending module is used for: and sending the auxiliary information of the direct communication interface to a direct communication receiving terminal.
In a sixth aspect, an embodiment of the present application provides a receiving terminal for determining a HARQ process number, where the receiving terminal includes: the receiving module and the second determining module; wherein:
the receiving module is used for: receiving direct communication interface auxiliary information sent by a direct communication sending terminal corresponding to a direct communication receiving terminal;
the second determination module is to: and determining the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process according to the auxiliary information of the direct communication interface.
In addition, for technical effects brought by any one implementation manner of the third aspect to the sixth aspect, reference may be made to technical effects brought by different implementation manners of the first aspect and the second aspect, and details are not described here.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic diagram of cellular network communication in the related art;
fig. 2 is a schematic diagram illustrating a direct communication between a transmitting terminal and a receiving terminal in the related art;
fig. 3 is a system structure diagram for determining an HARQ process number according to an embodiment of the present application;
fig. 4 is a flowchart of an overall method for determining a HARQ process number according to an embodiment of the present application;
fig. 5 is a structural diagram of a direct communication sending terminal for determining a HARQ process number according to an embodiment of the present application;
fig. 6 is a structural diagram of a direct communication receiving terminal for determining a HARQ process number according to an embodiment of the present application;
fig. 7 is a structural diagram of another direct communication sending terminal for determining a HARQ process number according to an embodiment of the present application;
fig. 8 is a structural diagram of another direct communication receiving terminal for determining a HARQ process number according to an embodiment of the present application;
fig. 9 is a flowchart of a method for determining a HARQ process number according to an embodiment of the present application;
fig. 10 is a flowchart of another method for determining a HARQ process number according to an embodiment of the present application.
Detailed Description
Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.
(1) In the embodiments of the present application, the terms "network" and "system" are often used interchangeably, but those skilled in the art can understand the meaning.
(2) In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.
(3) "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
In a direct communication scenario, there is no clear scheme for ensuring that the direct communication sending terminal and the direct communication receiving terminal have the same understanding on the HARQ process number used by the direct communication sending terminal, so the present application provides a technical scheme for determining the HARQ process number.
The direct communication sending terminal and the direct receiving terminal are both devices with wireless communication functions, can be deployed on land and comprise indoor or outdoor, handheld or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal may be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote medical treatment (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), etc.; but also UEs in various forms, Mobile Stations (MSs), terminal equipment (terminal devices).
The network device may be a base station, which is a device providing a wireless communication function for a terminal, including but not limited to: a gbb in 5G, a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved node B or home node B, HNB), a BaseBand Unit (BBU), a transmission point (TRP), a Transmission Point (TP), a mobile switching center (msc), and the like. The base station in the present application may also be a device that provides a terminal with a wireless communication function in other communication systems that may appear in the future.
In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 3, a schematic diagram of a system structure for determining a HARQ process number according to an embodiment of the present application is provided, where the system includes a direct communication sending terminal 30 and a direct communication receiving terminal 31; wherein:
the direct communication transmission terminal 30 is configured to: determining auxiliary information of a direct communication interface, and sending the auxiliary information of the direct communication interface to a direct communication receiving terminal, wherein the auxiliary information of the direct communication interface is used for assisting the direct communication receiving terminal corresponding to the direct communication sending terminal to determine the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is used by each HARQ process;
the direct communication reception terminal 31 is configured to: receiving direct communication interface auxiliary information sent by a direct communication sending terminal corresponding to a direct communication receiving terminal; and determining the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process according to the auxiliary information of the direct communication interface.
In the application, a direct communication sending terminal determines the auxiliary information of a direct communication interface and sends the auxiliary information of the direct communication interface to a direct communication receiving terminal, wherein the auxiliary information of the direct communication interface is used for assisting the direct communication receiving terminal to determine the HARQ process number which is used by each HARQ process and authorized by the direct communication sending terminal in a pre-configuration mode; after receiving the direct communication interface auxiliary information sent by the corresponding direct communication sending terminal, the direct communication receiving terminal determines HARQ process numbers which are used by each HARQ process and are authorized by the direct communication sending terminal in a pre-configuration mode according to the direct communication interface auxiliary information; according to the auxiliary information of the direct communication interface, the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process can be determined, and a technical scheme for determining how to pre-configure and authorize the HARQ process number which is used by each HARQ process by the direct communication interface is provided.
In the application, because the direct communication sending terminal sends data to the direct communication receiving terminal, the direct communication sending terminal can directly or indirectly determine the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process through the following formula.
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
Wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization, i is the index number of pre-configuration authorization, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant, HARQoffsetiThe difference between the number of the first HARQ process corresponding to the pre-configured grant and 0.
When the direct communication sending terminal directly determines that the direct communication sending terminal is pre-configured to authorize the HARQ process number used by each HARQ process according to the formula:
the direct communication sending terminal determines that the auxiliary information of the direct communication interface comprises one or a combination of the following items:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
or, the direct communication sending terminal determines that the direct communication interface auxiliary information includes one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
When the direct communication sending terminal indirectly determines that the direct communication sending terminal is pre-configured with the HARQ process number authorized to be used by each HARQ process according to the formula:
the direct communication sending terminal determines the HARQ process number corresponding to each HARQ process which is pre-configured and authorized by the direct communication sending terminal according to the formula, performs HARQ process number mapping on the determined HARQ process number corresponding to each HARQ process, and takes the mapped first target HARQ process number as the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and used for each HARQ process;
at this time, the direct communication transmitting terminal determines that the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
the direct communication sending terminal pre-configures an offset value between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process;
or, the direct communication sending terminal determines that the direct communication interface auxiliary information includes one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In the application, when the direct communication sending terminal performs HARQ process mapping on the determined HARQ process number corresponding to each HARQ process, a HARQ process number corresponding to any HARQ process is pre-configured and authorized for the direct communication sending terminal, and if the HARQ process number corresponding to the HARQ process is not occupied currently, the first target HARQ process number is determined to be the same as the HARQ process number corresponding to the HARQ process, or the first target HARQ process number is determined to be any idle HARQ process number currently;
and if the HARQ process number corresponding to the HARQ process is occupied currently, determining that the first target HARQ process number is any idle HARQ process number currently.
Based on the above, in the present application, the direct communication interface auxiliary information determined by the direct communication sending terminal includes three forms:
the first form: the direct communication interface assistance information comprises one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
the difference between the first HARQ process number corresponding to the grant and 0 is preconfigured.
The second form: the direct communication interface assistance information comprises one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
the direct communication sending terminal pre-configures an offset value between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process.
The third form: the direct communication interface assistance information comprises one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In this application, after determining the auxiliary information of the direct communication interface, the direct communication sending terminal transmits the auxiliary information of the direct communication interface to the corresponding direct communication receiving terminal through the following transmission modes:
transmitting the direct communication interface assistance information to a direct communication receiving terminal of the direct communication transmitting terminal through the SCI; or
Transmitting the direct communication interface assistance information to a direct communication receiving terminal of the direct communication transmitting terminal through PC5-RRC signaling; or
The direct communication interface assistance information is transmitted to a direct communication reception terminal of the direct communication transmission terminal through the MAC CE.
Correspondingly, the direct communication receiving terminal receives the direct communication interface auxiliary information sent by the corresponding direct communication sending terminal in the following way:
receiving direct communication interface auxiliary information transmitted by a direct communication transmitting terminal through an SCI; or
Receiving direct communication interface direct auxiliary information sent by a direct communication sending terminal through PC5-RRC signaling; or
And receiving the direct communication interface auxiliary information transmitted by the direct communication transmitting terminal through the MAC CE.
And after the direct communication receiving terminal receives the direct communication interface auxiliary information sent by the corresponding direct communication sending terminal, determining the HARQ process number which is used by each HARQ process and authorized by the direct communication sending terminal in a pre-configuration mode according to the received direct communication interface auxiliary information.
Since the direct communication interface assistance information transmitted by the direct communication transmitting terminal exists in three forms, the direct communication receiving terminal may receive any one of the three forms of direct communication interface assistance information.
In the application, the direct communication receiving terminal receives different direct communication interface auxiliary information, and the determination mode for determining the HARQ process number pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process according to the direct communication interface auxiliary information is different.
In the present application, how to determine the HARQ process number in the case of different direct communication interface auxiliary information is described by the following embodiments.
The first embodiment is as follows: the direct communication interface assistance information comprises one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
the difference between the first HARQ process number corresponding to the grant and 0 is preconfigured.
As shown in fig. 4, a flowchart of an overall method for determining a HARQ process number according to an embodiment of the present application is provided.
Step 400, the direct communication sending terminal determines that the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
Specifically, the direct communication sending terminal determines, according to the following formula, an HARQ process number that the direct communication sending terminal pre-configures and authorizes each HARQ process to use:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein: CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization, i is the index number of pre-configuration authorization, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant, HARQoffsetiThe difference between the number of the first HARQ process corresponding to the pre-configured grant and 0.
Step 401, the direct communication sending terminal sends the direct communication interface auxiliary information to the direct communication receiving terminal.
In this implementation, the direct communication interface auxiliary information includes: pre-configuring an authorized index number, pre-configuring an authorized period, pre-configuring the number of HARQ processes corresponding to the authorization, and pre-configuring at least one of a difference value between a first HARQ process number corresponding to the authorization and 0.
It should be noted that, when only one set of pre-configuration authorization exists, the index number of the pre-configuration authorization does not need to be included in the auxiliary information of the direct communication interface; when there are multiple pre-configuration authorizations, in order for the direct communication receiving terminal to determine which set of pre-configuration authorization HARQ process to use, the index number of the pre-configuration authorization needs to be included in the direct communication interface auxiliary information.
In this application, the direct communication interface auxiliary information may be transmitted to the direct communication receiving terminal of the direct communication transmitting terminal by at least one of the following methods:
transmitting the direct communication interface auxiliary information to a direct communication receiving terminal of the direct communication transmitting terminal through the direct communication interface control information SCI;
transmitting the direct communication interface auxiliary information to a direct communication receiving terminal of the direct communication transmitting terminal through a direct communication interface radio resource control PC5-RRC signaling;
and transmitting the direct communication interface auxiliary information to a direct communication receiving terminal of the direct communication transmitting terminal through a direct communication interface media access control unit MAC CE.
It should be noted that, if the direct communication interface auxiliary information is sent through the direct communication interface control information SCI, before the direct communication sending terminal sends the direct communication interface auxiliary information to the direct communication receiving terminal, a step of determining that the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process must be performed; if it is through PC5-RRC signaling or MAC CE, the direct communication transmitting terminal transmitting the direct communication interface assistance information to the direct communication receiving terminal may be performed before the step of determining that the direct communication transmitting terminal pre-configures the HARQ process number authorized for use by each HARQ process.
Step 402, the direct communication receiving terminal determines the HARQ process number pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process according to the auxiliary information of the direct communication interface.
In the implementation process, the direct communication receiving terminal determines the HARQ process number of the HARQ process which is pre-configured and authorized by the direct communication sending terminal, and takes the determined HARQ process number of the HARQ process which is pre-configured and authorized by the direct communication sending terminal as the HARQ process number corresponding to each HARQ process which is pre-configured and authorized by the direct communication receiving terminal.
It should be noted that the way in which the direct communication receiving terminal determines that the direct communication receiving terminal pre-configures the HARQ process number corresponding to each HARQ process is the same as the way in which the direct communication sending terminal determines that the direct communication sending terminal pre-configures the HARQ process number used by each HARQ process, that is, the method is determined according to the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization in the auxiliary information of the direct communication interface, i is the index number of pre-configuration authorization in the auxiliary information of the direct communication interface, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant in direct communication interface assistance information, HARQoffsetiA difference between a first HARQ process number corresponding to the pre-configured grant in the direct communication interface assistance information and 0.
And step 403, the direct communication receiving terminal performs HARQ process number mapping on HARQ process numbers which are pre-configured and authorized by the direct communication sending terminal for each HARQ process, and determines the HARQ process numbers which are pre-configured and authorized by the direct communication receiving terminal for each HARQ process.
And after the direct communication receiving terminal determines that the direct communication sending terminal is pre-configured with the HARQ process number authorized to be used by each HARQ process, the direct communication receiving terminal performs HARQ process number mapping aiming at the HARQ process number pre-configured by the direct communication sending terminal and authorized to be used by each HARQ process to obtain a mapped second target HARQ process number, wherein the second target HARQ process number is the HARQ process number pre-configured by the direct communication receiving terminal and authorized to be used by each HARQ process, and the second target HARQ process number is the currently idle HARQ process number of the direct communication receiving terminal.
When the direct communication receiving terminal performs the mapping of the HARQ process number, if the HARQ process number corresponding to the HARQ process preconfigured by the direct communication receiving terminal is idle at the current receiving terminal, the direct communication receiving terminal can be directly used to preconfigured the HARQ process number corresponding to the authorized HARQ process as the HARQ process number used by the direct communication receiving terminal for preconfigured the authorized HARQ process, that is, the second target HARQ process number is the same as the HARQ process number corresponding to the HARQ process preconfigured by the direct communication receiving terminal; or
If the number of the HARQ process corresponding to the pre-configured authorized HARQ process of the direct communication receiving terminal is idle at the current receiving terminal, an idle HARQ process number can be selected from the number of the HARQ process of the current idle direct communication receiving terminal and used as the number of the HARQ process used by the pre-configured authorized HARQ process of the direct communication receiving terminal; or
And if the HARQ process number corresponding to the pre-configured authorized HARQ process of the direct communication receiving terminal is occupied at the current receiving terminal, selecting an idle HARQ process number from the current idle HARQ process numbers of the direct communication receiving terminal as the HARQ process number used by the pre-configured authorized HARQ process of the direct communication receiving terminal.
And after determining that the direct communication receiving terminal is preconfigured with the HARQ process number used by the authorized HARQ process, mapping the HARQ process number corresponding to the HARQ process which is preconfigured by the direct communication receiving terminal to the HARQ process number used by the authorized HARQ process, and maintaining the mapping relation between the HARQ process number and the HARQ process number.
Examples are as follows:
suppose nrofHARQ-ProcessesiValue 3, HARQoffsetiAnd 4, the direct communication receiving terminal determines that the HARQ process numbers corresponding to the pre-configured authorized HARQ process of the direct communication receiving terminal are #4, #5 and #6 in sequence according to the formula.
Assuming that the HARQ process number #5 of the direct communication receiving terminal is currently occupied, a new available HARQ process number needs to be reselected for the HARQ process number #5, and assuming that the reselected HARQ process number is #9, at this time, establishing the HARQ process number corresponding to each HARQ process which is pre-configured and authorized by the direct communication receiving terminal and the HARQ process number which is pre-configured and authorized by the direct communication receiving terminal and is used by each HARQ process. The specific mapping relationship is shown in table 1:
TABLE 1
Figure BDA0002439076750000281
The direct communication receiving terminal determines the mapping relation between the HARQ process number corresponding to the pre-configuration authorization of the direct communication receiving terminal and the HARQ process ID used by the pre-configuration authorization of the direct communication receiving terminal, namely determines the mapping relation between the HARQ process number used by the pre-configuration authorization of the direct communication sending terminal and the HARQ process ID used by the pre-configuration authorization of the direct communication receiving terminal;
after the mapping relation is determined, when data corresponding to the HARQ process number is received from the direct communication sending terminal, the received data is placed into the HARQ buffer corresponding to the mapped HARQ process number according to the mapping relation; for example, the direct communication receiving terminal receives the data sent by the direct communication sending terminal in the HARQ process number #5, and according to the mapping relationship, puts the received data into the HARQ buffer corresponding to the HARQ process number # 9.
And if the subsequent direct communication sending terminal retransmits the HARQ process number, the direct communication receiving terminal performs merging and decoding on the received data and the data in the HARQ buffer corresponding to the mapped HARQ process number according to the mapping relation.
Example two: the direct communication interface assistance information comprises one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
the direct communication sending terminal pre-configures an offset value between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process.
As shown in fig. 4, a flowchart of an overall method for determining a HARQ process number according to an embodiment of the present application is provided.
Step 400, the direct communication sending terminal determines that the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
Specifically, the direct communication sending terminal determines, according to the following formula, an HARQ process number corresponding to each HARQ process authorized by the direct communication sending terminal through pre-configuration:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein: CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization, i is the index number of pre-configuration authorization, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant, HARQoffsetiThe difference between the number of the first HARQ process corresponding to the pre-configured grant and 0.
In the application, after the direct communication sending terminal calculates the HARQ process number corresponding to each HARQ process pre-configured and authorized by the direct communication sending terminal according to the formula, performing HARQ process number mapping on the calculated HARQ process number corresponding to each HARQ process pre-configured and authorized by the direct communication sending terminal to obtain a first target HARQ process number, wherein the first target HARQ process number is used as the HARQ process number used by each HARQ process pre-configured and authorized by the direct communication sending terminal, and the first target HARQ process number is the currently idle HARQ process number of the direct communication sending terminal.
Optionally, if the calculated direct communication sending terminal pre-configures an HARQ process number corresponding to each HARQ process, and the direct communication sending terminal is currently idle, the direct communication sending terminal may be directly used to pre-configure an HARQ process number corresponding to an authorized HARQ process, as an HARQ process number used by the direct communication sending terminal pre-configured and authorized HARQ process, that is, the first target HARQ process number is the same as the HARQ process number corresponding to the direct communication sending terminal pre-configured and authorized HARQ process; or
If the direct communication sending terminal is preconfigured with the HARQ process number corresponding to the authorized HARQ process, the direct communication sending terminal is idle at present, or an idle HARQ process number can be selected from the currently idle HARQ process numbers of the direct communication sending terminal and used as the HARQ process number used by the preconfigured authorized HARQ process of the direct communication sending terminal; or
And if the HARQ process number corresponding to the pre-configured authorized HARQ process of the direct communication sending terminal is occupied at the current time of the direct communication sending terminal, selecting an idle HARQ process number from the current idle HARQ process numbers of the direct communication sending terminal as the HARQ process number used by the pre-configured authorized HARQ process of the direct communication sending terminal.
And after determining that the direct communication sending terminal is preconfigured with the HARQ process number used by the authorized HARQ process, mapping the HARQ process number corresponding to the HARQ process which is preconfigured by the direct communication sending terminal to the HARQ process number which is preconfigured by the authorized HARQ process by the direct communication receiving terminal, and maintaining the mapping relation between the HARQ process number and the HARQ process number.
Examples are as follows:
suppose nrofHARQ-ProcessesiValue 3, HARQoffsetiAnd taking the value of 0, determining that the HARQ process numbers corresponding to each HARQ process are sequentially #0, #1 and #2 by the direct communication sending terminal according to the formula.
Assuming that the HARQ process number #2 of the direct communication transmission terminal is currently occupied, a new available HARQ process number needs to be reselected from the currently idle HARQ process numbers in the direct communication transmission terminal for the HARQ process number #2, assuming that the new available HARQ process number is the HARQ process number #4, and establishing a mapping relationship between the HARQ process number corresponding to each HARQ process and the HARQ process number corresponding to each HARQ process, which is pre-configured and authorized by the direct communication transmission terminal. The specific mapping relationship is shown in table 2:
TABLE 2
Figure BDA0002439076750000311
After the direct communication sending terminal determines that the direct communication sending terminal pre-configures the mapping relationship between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process, the direct communication sending terminal may determine that: the direct communication sending terminal pre-configures an offset value between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process.
Step 401, the direct communication sending terminal sends the direct communication interface auxiliary information to the direct communication receiving terminal.
In this implementation, the direct communication interface auxiliary information includes: pre-configuring an authorized index number, pre-configuring an authorized period, pre-configuring the number of HARQ processes corresponding to the authorization, pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0, and pre-configuring, by the direct communication sending terminal, at least one of an HARQ process number corresponding to each HARQ process authorized by the pre-configuration of the direct communication sending terminal and an offset value between HARQ process numbers used by each HARQ process authorized by the pre-configuration of the direct communication sending terminal.
It should be noted that, when only one set of pre-configuration authorization exists, the index number of the pre-configuration authorization does not need to be included in the auxiliary information of the direct communication interface; when there are multiple pre-configured grants, in order for the direct communication receiving terminal to determine which set of pre-configured grant HARQ process number is used, the index number of the pre-configured grant needs to be included in the direct communication interface assistance information.
In this application, the direct communication interface auxiliary information may be transmitted to the direct communication receiving terminal of the direct communication transmitting terminal by at least one of the following methods:
transmitting the direct communication interface auxiliary information to a direct communication receiving terminal of the direct communication transmitting terminal through the direct communication interface control information SCI;
transmitting the direct communication interface auxiliary information to a direct communication receiving terminal of the direct communication transmitting terminal through a direct communication interface radio resource control PC5-RRC signaling;
and transmitting the direct communication interface auxiliary information to a direct communication receiving terminal of the direct communication transmitting terminal through a direct communication interface media access control unit MAC CE.
It should be noted that, if the direct communication interface auxiliary information is sent through the direct communication interface control information SCI, before the direct communication sending terminal sends the direct communication interface auxiliary information to the direct communication receiving terminal, a step of determining that the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process must be performed; if it is through PC5-RRC signaling or MAC CE, the direct communication transmitting terminal transmitting the direct communication interface assistance information to the direct communication receiving terminal may be performed before the step of determining that the direct communication transmitting terminal pre-configures the HARQ process number authorized for use by each HARQ process.
Step 402, the direct communication receiving terminal determines the HARQ process number pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process according to the auxiliary information of the direct communication interface.
In the implementation process, because the auxiliary information of the direct communication interface contains the deviation value between the HARQ process number corresponding to each HARQ process which is pre-configured and authorized by the direct communication sending terminal and the HARQ process number used by each HARQ process which is pre-configured and authorized by the direct communication sending terminal, the direct communication receiving terminal firstly determines the HARQ process number corresponding to each HARQ process which is pre-configured and authorized by the direct communication sending terminal; then, determining the HARQ process number which is used by each HARQ process and authorized by the pre-configuration of the direct communication sending terminal according to the deviation value in the auxiliary information of the direct communication interface; and taking the determined HARQ process number of the HARQ process which is pre-configured and authorized by the direct communication sending terminal as the HARQ process number corresponding to each HARQ process which is pre-configured and authorized by the direct communication receiving terminal.
The direct communication receiving terminal calculates the HARQ process number corresponding to each HARQ process authorized by the direct communication sending terminal according to the following formula.
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
Wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization in the auxiliary information of the direct communication interface, and i is direct communicationIndex number of pre-configured grant, nrofHARQ-Processes, in the information interface assistance informationiNumber of HARQ processes corresponding to a pre-configured grant in direct communication interface assistance information, HARQoffsetiA difference between a first HARQ process number corresponding to the pre-configured grant in the direct communication interface assistance information and 0.
After determining that the direct communication sending terminal is preconfigured and authorized with the HARQ process number corresponding to each HARQ process, the direct communication receiving terminal maps the HARQ process number corresponding to each HARQ process according to an offset value between the HARQ process number corresponding to each HARQ process which is preconfigured and authorized by the direct communication sending terminal and the HARQ process number which is preconfigured and authorized by the direct communication sending terminal and used by each HARQ process in the auxiliary information of the direct communication interface, so as to obtain a mapped first target HARQ process number, namely the HARQ process number which is preconfigured and authorized by the direct communication sending terminal and used by each HARQ process.
In the implementation process, when the direct communication receiving terminal pre-configures and authorizes the HARQ process number corresponding to each HARQ process to perform HARQ process number mapping, the direct communication sending terminal in the auxiliary information of the direct communication interface pre-configures and authorizes an offset value between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process and pre-configured and authorized by the direct communication sending terminal to serve as the offset value corresponding to each HARQ process pre-configured and authorized by the direct communication sending terminal; and then the sum of the HARQ process number corresponding to each HARQ process and the offset value corresponding to the HARQ process is authorized by the direct communication sending terminal in a pre-configuration mode, and the sum is used as the HARQ process number used by each HARQ process by the direct communication sending terminal in the pre-configuration mode. Illustrated by table 3 is as follows:
TABLE 3
Figure BDA0002439076750000341
And step 403, the direct communication receiving terminal performs HARQ process number mapping on HARQ process numbers which are pre-configured and authorized by the direct communication sending terminal for each HARQ process, and determines the HARQ process numbers which are pre-configured and authorized by the direct communication receiving terminal for each HARQ process.
And after the direct communication receiving terminal determines that the direct communication sending terminal is pre-configured with the HARQ process number authorized to be used by each HARQ process, the direct communication receiving terminal performs HARQ process number mapping aiming at the HARQ process number pre-configured by the direct communication sending terminal and authorized to be used by each HARQ process to obtain a mapped second target HARQ process number, wherein the second target HARQ process number is the HARQ process number pre-configured by the direct communication receiving terminal and authorized to be used by each HARQ process, and the second target HARQ process number is the currently idle HARQ process number of the direct communication receiving terminal.
When the direct communication receiving terminal performs the mapping of the HARQ process number, if the HARQ process number corresponding to the HARQ process preconfigured by the direct communication receiving terminal is idle at the current receiving terminal, the direct communication receiving terminal can be directly used to preconfigured the HARQ process number corresponding to the authorized HARQ process as the HARQ process number used by the direct communication receiving terminal for preconfigured the authorized HARQ process, that is, the second target HARQ process number is the same as the HARQ process number corresponding to the HARQ process preconfigured by the direct communication receiving terminal; or
If the number of the HARQ process corresponding to the pre-configured authorized HARQ process of the direct communication receiving terminal is idle at the current receiving terminal, an idle HARQ process number can be selected from the number of the HARQ process of the current idle direct communication receiving terminal and used as the number of the HARQ process used by the pre-configured authorized HARQ process of the direct communication receiving terminal; or
And if the HARQ process number corresponding to the pre-configured authorized HARQ process of the direct communication receiving terminal is occupied at the current receiving terminal, selecting an idle HARQ process number from the current idle HARQ process numbers of the direct communication receiving terminal as the HARQ process number used by the pre-configured authorized HARQ process of the direct communication receiving terminal.
And after determining that the direct communication receiving terminal is preconfigured with the HARQ process number used by the authorized HARQ process, mapping the HARQ process number corresponding to the HARQ process which is preconfigured by the direct communication receiving terminal to the HARQ process number used by the authorized HARQ process, and maintaining the mapping relation between the HARQ process number and the HARQ process number.
Examples are as follows:
as in the above example, the direct communication receiving terminal determines, according to the direct communication interface auxiliary information, that the HARQ process numbers that the direct communication sending terminal is preconfigured and authorized to use by each HARQ process are sequentially #0, #1, #4, that is, it determines that the HARQ process numbers that the direct communication receiving terminal is preconfigured and authorized to correspond to each HARQ process are sequentially #0, #1, # 4.
Supposing that the HARQ process number #1 and the HARQ process number #4 of the direct communication receiving terminal are currently occupied, reselecting a corresponding new available HARQ process number from currently idle HARQ process numbers in the direct communication receiving terminal for the HARQ process number #1 and the HARQ process number #4, supposing that the new available HARQ process numbers are respectively the HARQ process number #9 and the HARQ process number # 10; at this time, a mapping relation between the HARQ process number which is pre-configured and authorized by the direct communication receiving terminal and corresponds to each HARQ process and the HARQ process number which is pre-configured and authorized by the direct communication receiving terminal and used by each HARQ process is established. The specific mapping relationship is shown in table 4:
TABLE 4
Figure BDA0002439076750000361
The direct communication receiving terminal determines the mapping relation between the HARQ process number corresponding to the pre-configuration authorization of the direct communication receiving terminal and the HARQ process ID used by the pre-configuration authorization of the direct communication receiving terminal, namely determines the mapping relation between the HARQ process number used by the pre-configuration authorization of the direct communication sending terminal and the HARQ process ID used by the pre-configuration authorization of the direct communication receiving terminal;
after the mapping relation is determined, when data corresponding to the HARQ process number is received from the direct communication sending terminal, the received data is placed into the HARQ buffer corresponding to the mapped HARQ process number according to the mapping relation; for example, the direct communication receiving terminal receives the data sent by the direct communication sending terminal in the HARQ process number #5, and according to the mapping relationship, puts the received data into the HARQ buffer corresponding to the HARQ process number # 9.
And if the subsequent direct communication sending terminal retransmits the HARQ process number, the direct communication receiving terminal performs merging and decoding on the received data and the data in the HARQ buffer corresponding to the mapped HARQ process number according to the mapping relation.
Example three: the direct communication interface assistance information comprises one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
As shown in fig. 4, a flowchart of an overall method for determining a HARQ process number according to an embodiment of the present application is provided.
Step 400, the direct communication sending terminal determines that the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In the embodiment, the direct communication sending terminal directly determines the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process according to the following formula; or determining the HARQ process number corresponding to each HARQ process pre-configured and authorized by the direct communication sending terminal according to the following formula, performing HARQ process number mapping on the HARQ process number corresponding to each HARQ process pre-configured and authorized by the determined direct communication sending terminal, and taking the mapped first target HARQ process number as the HARQ process number pre-configured and authorized by the direct communication sending terminal and used for each HARQ process.
Specifically, the step can be referred to as step 400 in the first embodiment or step 400 in the second embodiment.
Step 401, the direct communication sending terminal sends the direct communication interface auxiliary information to the direct communication receiving terminal.
In this implementation, the direct communication interface auxiliary information includes: and pre-configuring an authorized index number, and pre-configuring at least one of HARQ process numbers authorized to be used by each HARQ process by the direct communication sending terminal.
It should be noted that, when only one set of pre-configuration authorization exists, the index number of the pre-configuration authorization does not need to be included in the auxiliary information of the direct communication interface; when there are multiple pre-configured grants, in order for the direct communication receiving terminal to determine which set of pre-configured grant HARQ process number is used, the index number of the pre-configured grant needs to be included in the direct communication interface assistance information.
In this application, the direct communication interface auxiliary information may be transmitted to the direct communication receiving terminal of the direct communication transmitting terminal by at least one of the following methods:
transmitting the direct communication interface auxiliary information to a direct communication receiving terminal of the direct communication transmitting terminal through the direct communication interface control information SCI;
transmitting the direct communication interface auxiliary information to a direct communication receiving terminal of the direct communication transmitting terminal through a direct communication interface radio resource control PC5-RRC signaling;
and transmitting the direct communication interface auxiliary information to a direct communication receiving terminal of the direct communication transmitting terminal through a direct communication interface media access control unit MAC CE.
It should be noted that, if the direct communication interface auxiliary information is sent through the direct communication interface control information SCI, before the direct communication sending terminal sends the direct communication interface auxiliary information to the direct communication receiving terminal, a step of determining that the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process must be performed; if it is through PC5-RRC signaling or MAC CE, the direct communication transmitting terminal transmitting the direct communication interface assistance information to the direct communication receiving terminal may be performed before the step of determining that the direct communication transmitting terminal pre-configures the HARQ process number authorized for use by each HARQ process.
Step 402, the direct communication receiving terminal determines the HARQ process number pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process according to the auxiliary information of the direct communication interface.
In the implementation process, the direct communication receiving terminal directly determines the HARQ process number corresponding to each HARQ process pre-configured and authorized by the direct communication sending terminal according to the auxiliary information of the direct communication interface:
specifically, the direct communication receiving terminal directly determines the HARQ process number corresponding to each HARQ process pre-configured and authorized by the direct communication sending terminal according to the index number of the pre-configured authorization in the direct communication interface auxiliary information and the HARQ process number pre-configured and authorized by the direct communication sending terminal and used by each HARQ process; or,
and the direct communication receiving terminal directly determines the HARQ process number corresponding to each HARQ process which is pre-configured and authorized by the direct communication sending terminal according to the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and used by each HARQ process in the auxiliary information of the direct communication interface.
In the implementation process, the direct communication receiving terminal determines the HARQ process number of the HARQ process which is pre-configured and authorized by the direct communication sending terminal, and takes the determined HARQ process number of the HARQ process which is pre-configured and authorized by the direct communication sending terminal as the HARQ process number corresponding to each HARQ process which is pre-configured and authorized by the direct communication receiving terminal.
It should be noted that, when the direct communication interface auxiliary information includes the HARQ process number that the direct communication sending terminal pre-configures and authorizes each HARQ process to use, the direct communication receiving terminal does not need to perform calculation according to a formula, and the direct communication sending terminal pre-configures and authorizes the HARQ process number that each HARQ process uses in the direct communication interface auxiliary information directly as the HARQ process number that the direct communication receiving terminal pre-configures and authorizes each HARQ process to use.
And step 403, the direct communication receiving terminal performs HARQ process number mapping on HARQ process numbers which are pre-configured and authorized by the direct communication sending terminal for each HARQ process, and determines the HARQ process numbers which are pre-configured and authorized by the direct communication receiving terminal for each HARQ process.
And after the direct communication receiving terminal determines that the direct communication sending terminal is pre-configured with the HARQ process number authorized to be used by each HARQ process, the direct communication receiving terminal performs HARQ process number mapping aiming at the HARQ process number pre-configured by the direct communication sending terminal and authorized to be used by each HARQ process to obtain a mapped second target HARQ process number, wherein the second target HARQ process number is the HARQ process number pre-configured by the direct communication receiving terminal and authorized to be used by each HARQ process, and the second target HARQ process number is the currently idle HARQ process number of the direct communication receiving terminal.
When the direct communication receiving terminal performs the mapping of the HARQ process number, if the HARQ process number corresponding to the HARQ process preconfigured by the direct communication receiving terminal is idle at the current receiving terminal, the direct communication receiving terminal can be directly used to preconfigured the HARQ process number corresponding to the authorized HARQ process as the HARQ process number used by the direct communication receiving terminal for preconfigured the authorized HARQ process, that is, the second target HARQ process number is the same as the HARQ process number corresponding to the HARQ process preconfigured by the direct communication receiving terminal; or
If the number of the HARQ process corresponding to the pre-configured authorized HARQ process of the direct communication receiving terminal is idle at the current receiving terminal, an idle HARQ process number can be selected from the number of the HARQ process of the current idle direct communication receiving terminal and used as the number of the HARQ process used by the pre-configured authorized HARQ process of the direct communication receiving terminal; or
And if the HARQ process number corresponding to the pre-configured authorized HARQ process of the direct communication receiving terminal is occupied at the current receiving terminal, selecting an idle HARQ process number from the current idle HARQ process numbers of the direct communication receiving terminal as the HARQ process number used by the pre-configured authorized HARQ process of the direct communication receiving terminal.
And after determining that the direct communication receiving terminal is preconfigured with the HARQ process number used by the authorized HARQ process, mapping the HARQ process number corresponding to the HARQ process which is preconfigured by the direct communication receiving terminal to the HARQ process number used by the authorized HARQ process, and maintaining the mapping relation between the HARQ process number and the HARQ process number.
Examples are as follows:
suppose that the direct communication receiving terminal determines, according to the direct communication interface auxiliary information, that the HARQ process numbers which are pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process are sequentially #0, #1, #4, that is, it determines that the HARQ process numbers which are pre-configured and authorized by the direct communication receiving terminal and correspond to each HARQ process are sequentially #0, #1, # 4.
Supposing that the HARQ process number #1 and the HARQ process number #4 of the direct communication receiving terminal are currently occupied, reselecting a corresponding new available HARQ process number from currently idle HARQ process numbers in the direct communication receiving terminal for the HARQ process number #1 and the HARQ process number #4, supposing that the new available HARQ process numbers are respectively the HARQ process number #9 and the HARQ process number # 10; at this time, a mapping relation between the HARQ process number which is pre-configured and authorized by the direct communication receiving terminal and corresponds to each HARQ process and the HARQ process number which is pre-configured and authorized by the direct communication receiving terminal and used by each HARQ process is established. The specific mapping relationship is shown in table 5:
TABLE 5
Figure BDA0002439076750000401
The direct communication receiving terminal determines the mapping relation between the HARQ process number corresponding to the pre-configuration authorization of the direct communication receiving terminal and the HARQ process ID used by the pre-configuration authorization of the direct communication receiving terminal, namely determines the mapping relation between the HARQ process number used by the pre-configuration authorization of the direct communication sending terminal and the HARQ process ID used by the pre-configuration authorization of the direct communication receiving terminal;
after the mapping relation is determined, when data corresponding to the HARQ process number is received from the direct communication sending terminal, the received data is placed into the HARQ buffer corresponding to the mapped HARQ process number according to the mapping relation; for example, the direct communication receiving terminal receives the data sent by the direct communication sending terminal in the HARQ process number #5, and according to the mapping relationship, puts the received data into the HARQ buffer corresponding to the HARQ process number # 9.
And if the subsequent direct communication sending terminal retransmits the HARQ process number, the direct communication receiving terminal performs merging and decoding on the received data and the data in the HARQ buffer corresponding to the mapped HARQ process number according to the mapping relation.
In the application, the direct communication receiving terminal determines the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and used by each HARQ process according to the auxiliary information of the direct communication interface, maps the HARQ process number which is pre-configured and authorized by the determined direct communication sending terminal and used by each HARQ process into the current idle process number of the direct communication receiving terminal, and maintains the mapping relation between the HARQ process number and the idle process number so as to ensure that the HARQ retransmission aiming at any pre-configured and authorized process can be correctly combined and decoded after being received.
As shown in fig. 5, a direct communication sending terminal structure diagram for determining an HARQ process number according to an embodiment of the present application is provided, where the direct communication sending terminal includes: a processor 500, a memory 501, and a transceiver 502.
The processor 500 is responsible for managing the bus architecture and general processing, and the memory 501 may store data used by the processor 500 in performing operations. The transceiver 502 is used to receive and transmit data under the control of the processor 500.
The bus architecture may include any number of interconnected buses and bridges, with one or more processors 500, represented by a processor, and various circuits of memory 501, represented by memory 501, being specifically linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 501 may store data used by the processor 500 in performing operations.
The processes disclosed in the embodiments of the present application may be applied to the processor 500, or implemented by the processor 500. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 500. The processor 500 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor, or in a combination of hardware and software modules in the processor 500. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 501, and the processor 500 reads the information in the memory 501, and completes the steps of the signal processing flow in combination with the hardware thereof.
The processor 500 is configured to read a program in the memory 501 and execute the following processes:
determining auxiliary information of a direct communication interface, wherein the auxiliary information of the direct communication interface is used for assisting a direct communication receiving terminal corresponding to a direct communication sending terminal to determine an HARQ process number which is used by each HARQ process and authorized by the pre-configuration of the direct communication sending terminal;
the direct communication interface assistance information is transmitted to the direct communication receiving terminal through the transceiver 502.
In one possible implementation, the processor 500 is further configured to:
determining the HARQ process number which is authorized to be used by each HARQ process through the pre-configuration of the direct communication sending terminal by the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization, i is the index number of pre-configuration authorization, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant, HARQoffsetiThe difference between the number of the first HARQ process corresponding to the pre-configured grant and 0.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
alternatively, the direct communication interface assistance information comprises one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In one possible implementation, the processor 500 is further configured to:
determining the HARQ process number corresponding to each HARQ process authorized by the direct communication sending terminal through the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization, i is the index number of pre-configuration authorization, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant, HARQoffsetiA difference value between the number of the first HARQ process corresponding to the pre-configuration authorization and 0;
and performing HARQ process number mapping on HARQ process numbers corresponding to each HARQ process authorized by the pre-configuration of the direct communication sending terminal, and taking the first target HARQ process number mapped by each HARQ process number as the HARQ process number authorized by the pre-configuration of the direct communication sending terminal to use for each HARQ process.
In one possible implementation, the processor 500 is specifically configured to:
the method comprises the steps that HARQ process numbers corresponding to any HARQ process are authorized to a direct communication sending terminal in a pre-configuration mode, if the HARQ process numbers are not occupied at the current time of the direct communication sending terminal, the first target HARQ process numbers are determined to be the same as the HARQ process numbers corresponding to the HARQ processes, or the first target HARQ process numbers are determined to be any idle HARQ process numbers of the direct communication sending terminal at the current time;
and if the HARQ process number is occupied at the current direct communication sending terminal, determining that the first target HARQ process number is any HARQ process number which is idle at the current direct communication sending terminal.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
the direct communication sending terminal pre-configures an offset value between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process;
alternatively, the direct communication interface assistance information comprises one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In one possible implementation, the processor 500 is specifically configured to:
transmitting the direct communication interface assistance information to a direct communication receiving terminal of the direct communication transmitting terminal through the SCI; or
Transmitting the direct communication interface assistance information to a direct communication receiving terminal of the direct communication transmitting terminal through PC5-RRC signaling; or
The direct communication interface assistance information is transmitted to a direct communication reception terminal of the direct communication transmission terminal through the MAC CE.
As shown in fig. 6, a structure diagram of a direct communication receiving terminal for determining a HARQ process number according to an embodiment of the present application is provided, where the direct communication receiving terminal includes: a processor 600, a memory 601, and a transceiver 602.
The processor 600 is responsible for managing the bus architecture and general processing, and the memory 601 may store data used by the processor 600 in performing operations. The transceiver 602 is used to receive and transmit data under the control of the processor 600.
The bus architecture may include any number of interconnected buses and bridges, with one or more processors 600, represented in particular by processors, and various circuits of memory 601, represented in particular by memory 601, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 600 is responsible for managing the bus architecture and general processing, and the memory 601 may store data used by the processor 600 in performing operations.
The processes disclosed in the embodiments of the present application may be applied to the processor 600, or implemented by the processor 600. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 600. The processor 600 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor, or in a combination of hardware and software modules in the processor 600. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 601, and the processor 600 reads the information in the memory 601 and completes the steps of the signal processing flow in combination with the hardware thereof.
The processor 600 is configured to read the program in the memory 601 and execute the following processes:
receiving, by the transceiver 602, direct communication interface auxiliary information transmitted by a direct communication transmitting terminal corresponding to a direct communication receiving terminal;
and determining the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process according to the auxiliary information of the direct communication interface.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In one possible implementation, the processor 600 is specifically configured to:
directly determining the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is used by each HARQ process according to the index number of the pre-configured authorization in the auxiliary information of the direct communication interface and the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is used by each HARQ process; or,
and directly determining the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process according to the HARQ process number which is pre-configured and authorized by the direct communication sending terminal in the auxiliary information of the direct communication interface.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ process numbers corresponding to authorization;
the difference between the first HARQ process number corresponding to the grant and 0 is preconfigured.
In one possible implementation, the processor 600 is specifically configured to:
according to the auxiliary information of the direct communication interface, determining the HARQ process number which is used by each HARQ process and is authorized by the pre-configuration of the direct communication sending terminal through the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization in the auxiliary information of the direct communication interface, i is the index number of pre-configuration authorization in the auxiliary information of the direct communication interface, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant in direct communication interface assistance information, HARQoffsetiA difference between a first HARQ process number corresponding to the pre-configured grant in the direct communication interface assistance information and 0.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
the direct communication sending terminal pre-configures an offset value between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process.
In one possible implementation, the processor 600 is specifically configured to:
according to the auxiliary information of the direct communication interface, determining the HARQ process number corresponding to each HARQ process which is pre-configured and authorized by the direct communication sending terminal through the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, and period is in the auxiliary information of the direct communication interfaceA period of pre-configuration authorization, i is an index number of the pre-configuration authorization in the auxiliary information of the direct communication interface, nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant in direct communication interface assistance information, HARQoffsetiA difference value between a first HARQ process number corresponding to a pre-configuration authorization in the auxiliary information of the direct communication interface and 0;
and performing HARQ process number mapping on HARQ process numbers corresponding to each HARQ process authorized by the pre-configuration of the direct communication sending terminal, and taking the first target HARQ process number mapped by each HARQ process number as the HARQ process number authorized by the pre-configuration of the direct communication sending terminal to use for each HARQ process.
In one possible implementation, the processor 600 is specifically configured to:
determining an offset value corresponding to each HARQ process which is pre-configured and authorized by the direct communication sending terminal according to the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is corresponding to each HARQ process and used by the direct communication sending terminal;
and the sum of the HARQ process number corresponding to each HARQ process and the offset value corresponding to the HARQ process, which is pre-configured and authorized by the direct communication sending terminal, is used as the HARQ process number used by each HARQ process, which is pre-configured and authorized by the direct communication sending terminal.
In one possible implementation, the processor 600 is further configured to:
and performing HARQ process number mapping on the HARQ process numbers which are pre-configured and authorized by the direct communication sending terminal and used by each HARQ process, and taking the second target HARQ process number mapped by each HARQ process number as the HARQ process number which is pre-configured and authorized by the direct communication receiving terminal and used by each HARQ process.
In one possible implementation, the processor 600 is specifically configured to:
the method comprises the steps that HARQ process numbers authorized to be used by any HARQ process are pre-configured for a direct communication sending terminal, if the HARQ process numbers are not occupied at the current time of a direct communication receiving terminal, the second target HARQ process numbers are determined to be the same as the HARQ process numbers used by the HARQ processes, or the second target HARQ process numbers are determined to be any idle HARQ process numbers of the direct communication receiving terminal;
and if the HARQ process number is occupied at the direct communication receiving terminal currently, determining that the second target HARQ process number is any HARQ process number which is idle at the direct communication receiving terminal currently.
In one possible implementation, the processor 600 is specifically configured to:
receiving direct communication interface auxiliary information transmitted by a direct communication transmitting terminal through an SCI; or
Receiving direct communication interface auxiliary information sent by a direct communication sending terminal through PC5-RRC signaling; or
And receiving the direct communication interface auxiliary information transmitted by the direct communication transmitting terminal through the MAC CE.
As shown in fig. 7, for another direct communication sending terminal for determining a HARQ process number provided in this embodiment of the present application, the direct communication sending terminal includes: a first determining module 700 and a sending module 701;
the first determination module 700 is configured to: determining auxiliary information of a direct communication interface, wherein the auxiliary information of the direct communication interface is used for assisting a direct communication receiving terminal corresponding to a direct communication sending terminal to determine an HARQ process number which is used by each HARQ process and authorized by the pre-configuration of the direct communication sending terminal;
the sending module 701 is configured to: and sending the auxiliary information of the direct communication interface to a direct communication receiving terminal.
In one possible implementation, the first determining module 700 is further configured to:
determining the HARQ process number which is authorized to be used by each HARQ process through the pre-configuration of the direct communication sending terminal by the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, and period is the presetA period of grant setting, i is an index number of a pre-configured grant, nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant, HARQoffsetiThe difference between the number of the first HARQ process corresponding to the pre-configured grant and 0.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
alternatively, the direct communication interface assistance information comprises one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In a possible implementation manner, the first determining module 701 is further configured to:
determining the HARQ process number corresponding to each HARQ process authorized by the direct communication sending terminal through the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization, i is the index number of pre-configuration authorization, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant, HARQoffsetiA difference value between the number of the first HARQ process corresponding to the pre-configuration authorization and 0;
and performing HARQ process number mapping on HARQ process numbers corresponding to each HARQ process authorized by the pre-configuration of the direct communication sending terminal, and taking the first target HARQ process number mapped by each HARQ process number as the HARQ process number authorized by the pre-configuration of the direct communication sending terminal to use for each HARQ process.
In a possible implementation manner, the first determining module 700 is specifically configured to:
the method comprises the steps that HARQ process numbers corresponding to any HARQ process are authorized to a direct communication sending terminal in a pre-configuration mode, if the HARQ process numbers are not occupied at the current time of the direct communication sending terminal, the first target HARQ process numbers are determined to be the same as the HARQ process numbers corresponding to the HARQ processes, or the first target HARQ process numbers are determined to be any idle HARQ process numbers of the direct communication sending terminal at the current time;
and if the HARQ process number is occupied at the current direct communication sending terminal, determining that the first target HARQ process number is any HARQ process number which is idle at the current direct communication sending terminal.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
the direct communication sending terminal pre-configures an offset value between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process;
alternatively, the direct communication interface assistance information comprises one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In a possible implementation manner, the sending module 701 is specifically configured to:
transmitting the direct communication interface assistance information to a direct communication receiving terminal of the direct communication transmitting terminal through the SCI; or
Transmitting the direct communication interface assistance information to a direct communication receiving terminal of the direct communication transmitting terminal through PC5-RRC signaling; or
The direct communication interface assistance information is transmitted to a direct communication reception terminal of the direct communication transmission terminal through the MAC CE.
As shown in fig. 8, for another direct communication receiving terminal for determining a HARQ process number provided in an embodiment of the present application, the direct communication receiving terminal includes: a receiving module 800 and a second determining module 801;
the receiving module 800 is configured to: receiving direct communication interface auxiliary information sent by a direct communication sending terminal corresponding to a direct communication receiving terminal;
the second determination module 801 is configured to: and determining the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process according to the auxiliary information of the direct communication interface.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In a possible implementation manner, the second determining module 801 is specifically configured to:
directly determining the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is used by each HARQ process according to the index number of the pre-configured authorization in the auxiliary information of the direct communication interface and the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is used by each HARQ process; or,
and directly determining the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process according to the HARQ process number which is pre-configured and authorized by the direct communication sending terminal in the auxiliary information of the direct communication interface.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ process numbers corresponding to authorization;
the difference between the first HARQ process number corresponding to the grant and 0 is preconfigured.
In a possible implementation manner, the second determining module 801 is specifically configured to:
according to the auxiliary information of the direct communication interface, determining the HARQ process number which is used by each HARQ process and is authorized by the pre-configuration of the direct communication sending terminal through the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization in the auxiliary information of the direct communication interface, i is the index number of pre-configuration authorization in the auxiliary information of the direct communication interface, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant in direct communication interface assistance information, HARQoffsetiA difference between a first HARQ process number corresponding to the pre-configured grant in the direct communication interface assistance information and 0.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
the direct communication sending terminal pre-configures an offset value between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process.
In a possible implementation manner, the second determining module 801 is specifically configured to:
according to the auxiliary information of the direct communication interface, determining the HARQ process number corresponding to each HARQ process which is pre-configured and authorized by the direct communication sending terminal through the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization in the auxiliary information of the direct communication interface, i is the index number of pre-configuration authorization in the auxiliary information of the direct communication interface, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant in direct communication interface assistance information, HARQoffsetiA difference value between a first HARQ process number corresponding to a pre-configuration authorization in the auxiliary information of the direct communication interface and 0;
and performing HARQ process number mapping on HARQ process numbers corresponding to each HARQ process authorized by the pre-configuration of the direct communication sending terminal, and taking the first target HARQ process number mapped by each HARQ process number as the HARQ process number authorized by the pre-configuration of the direct communication sending terminal to use for each HARQ process.
In a possible implementation manner, the second determining module 801 is specifically configured to:
determining an offset value corresponding to each HARQ process which is pre-configured and authorized by the direct communication sending terminal according to the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is corresponding to each HARQ process and used by the direct communication sending terminal;
and the sum of the HARQ process number corresponding to each HARQ process and the offset value corresponding to the HARQ process, which is pre-configured and authorized by the direct communication sending terminal, is used as the HARQ process number used by each HARQ process, which is pre-configured and authorized by the direct communication sending terminal.
In one possible implementation, the second determining module 801 is further configured to:
and performing HARQ process number mapping on the HARQ process numbers which are pre-configured and authorized by the direct communication sending terminal and used by each HARQ process, and taking the second target HARQ process number mapped by each HARQ process number as the HARQ process number which is pre-configured and authorized by the direct communication receiving terminal and used by each HARQ process.
In a possible implementation manner, the second determining module 801 is specifically configured to:
the method comprises the steps that HARQ process numbers authorized to be used by any HARQ process are pre-configured for a direct communication sending terminal, and if the HARQ process numbers are not occupied at the current time of a direct communication receiving terminal, the second target HARQ process numbers are determined to be the same as the HARQ process numbers corresponding to the HARQ processes, or the second target HARQ process numbers are determined to be any idle HARQ process numbers of the direct communication receiving terminal;
and if the HARQ process number is occupied at the direct communication receiving terminal currently, determining that the second target HARQ process number is any HARQ process number which is idle at the direct communication receiving terminal currently.
In a possible implementation manner, the receiving module 800 is specifically configured to:
receiving direct communication interface auxiliary information transmitted by a direct communication transmitting terminal through an SCI; or
Receiving direct communication interface auxiliary information sent by a direct communication sending terminal through PC5-RRC signaling; or
And receiving the direct communication interface auxiliary information transmitted by the direct communication transmitting terminal through the MAC CE.
Based on the same inventive concept, the embodiment of the present application further provides a method for determining a HARQ process number, because the device corresponding to the method is a direct communication sending terminal in the system for determining a HARQ process number in the embodiment of the present application, and the principle of solving the problem of the method is similar to that of the direct communication sending terminal, the implementation of the method can refer to the implementation of the direct communication sending terminal, and repeated parts are not described again.
As shown in fig. 9, a flowchart of a method for determining a HARQ process number provided in an embodiment of the present application includes the following steps:
step 900, the direct communication sending terminal determines the auxiliary information of the direct communication interface, and the auxiliary information of the direct communication interface is used for assisting the direct communication receiving terminal corresponding to the direct communication sending terminal to determine the HARQ process number used by the pre-configured authorized HARQ process of the direct communication sending terminal;
in step 901, the direct communication sending terminal sends the direct communication interface auxiliary information to the direct communication receiving terminal.
In a possible implementation manner, before the direct communication sending terminal determines the direct communication interface auxiliary information, the method further includes:
the direct communication sending terminal determines the HARQ process number which is pre-configured and authorized to be used by each HARQ process by the direct communication sending terminal according to the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization, i is the index number of pre-configuration authorization, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant, HARQoffsetiThe difference between the number of the first HARQ process corresponding to the pre-configured grant and 0.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
alternatively, the direct communication interface assistance information comprises one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In a possible implementation manner, before the direct communication sending terminal determines the direct communication interface auxiliary information, the method further includes:
the direct communication sending terminal determines the HARQ process number corresponding to each HARQ process authorized by the direct communication sending terminal through the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization, i is the index number of pre-configuration authorization, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant, HARQoffsetiA difference value between the number of the first HARQ process corresponding to the pre-configuration authorization and 0;
and the direct communication sending terminal performs HARQ process number mapping on HARQ process numbers corresponding to each HARQ process which are pre-configured and authorized by the direct communication sending terminal, and takes the first target HARQ process number mapped by each HARQ process number as the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and used by each HARQ process.
In a possible implementation manner, the performing, by the direct communication sending terminal, HARQ process number mapping on HARQ process numbers corresponding to each HARQ process by the direct communication sending terminal through pre-configuration authorization includes:
the method comprises the steps that HARQ process numbers corresponding to any HARQ process are authorized to be pre-configured for a direct communication sending terminal, if the HARQ process numbers are not occupied currently at the direct communication sending terminal, the direct communication sending terminal determines that a first target HARQ process number is the same as the HARQ process number corresponding to the HARQ process, or the direct communication sending terminal determines that the first target HARQ process number is any HARQ process number which is idle currently at the direct communication sending terminal;
and if the HARQ process number is occupied at the direct communication sending terminal, the direct communication sending terminal determines that the first target HARQ process number is any HARQ process number which is idle at the direct communication sending terminal.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
the direct communication sending terminal pre-configures an offset value between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process;
alternatively, the direct communication interface assistance information comprises one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In one possible implementation manner, a direct communication receiving terminal that a direct communication sending terminal sends direct communication interface assistance information to the direct communication sending terminal includes:
the direct communication sending terminal sends the auxiliary information of the direct communication interface to a direct communication receiving terminal of the direct communication sending terminal through the control information SCI of the direct communication interface; or
The direct communication sending terminal sends the auxiliary information of the direct communication interface to a direct communication receiving terminal of the direct communication sending terminal through a direct communication interface wireless resource control PC5-RRC signaling; or
The direct communication transmitting terminal transmits the direct communication interface auxiliary information to a direct communication receiving terminal of the direct communication transmitting terminal through a direct communication interface media access control unit MAC CE.
Based on the same inventive concept, the embodiment of the present application further provides another method for determining a HARQ process number, because the device corresponding to the method is a direct communication receiving terminal in the system for determining a HARQ process number in the embodiment of the present application, and the principle of solving the problem of the method is similar to that of the direct communication receiving terminal, the implementation of the method may refer to the implementation of the direct communication receiving terminal, and repeated parts are not described again.
As shown in fig. 10, a flowchart of another method for determining a HARQ process number according to an embodiment of the present application includes the following steps:
step 1000, the direct communication receiving terminal receives the auxiliary information of the direct communication interface sent by the direct communication sending terminal corresponding to the direct communication receiving terminal;
step 1001, the direct communication receiving terminal determines, according to the direct communication interface auxiliary information, an HARQ process number that the direct communication sending terminal has been preconfigured and authorized to use by each HARQ process.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
In a possible implementation manner, the determining, by the direct communication receiving terminal, the HARQ process number that each HARQ process is authorized to use by the direct communication sending terminal in a pre-configuration manner according to the direct communication interface auxiliary information includes:
the direct communication receiving terminal directly determines the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is used by each HARQ process according to the index number of the pre-configured authorization in the auxiliary information of the direct communication interface and the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is used by each HARQ process; or,
and the direct communication receiving terminal directly determines the HARQ process number which is used by each HARQ process and authorized by the direct communication sending terminal in the direct communication interface auxiliary information according to the HARQ process number which is used by each HARQ process and authorized by the direct communication sending terminal in the direct communication interface auxiliary information in a pre-configuration mode.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ process numbers corresponding to authorization;
the difference between the first HARQ process number corresponding to the grant and 0 is preconfigured.
In a possible implementation manner, the determining, by the direct communication receiving terminal, the HARQ process number that each HARQ process is authorized to use by the direct communication sending terminal in a pre-configuration manner according to the direct communication interface auxiliary information includes:
the direct communication receiving terminal determines the HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process according to the auxiliary information of the direct communication interface by the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization in the auxiliary information of the direct communication interface, i is the index number of pre-configuration authorization in the auxiliary information of the direct communication interface, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant in direct communication interface assistance information, HARQoffsetiA difference between a first HARQ process number corresponding to the pre-configured grant in the direct communication interface assistance information and 0.
In one possible implementation, the direct communication interface assistance information includes one or a combination of the following:
pre-configuring an authorized index number;
pre-configuring a period of the grant;
pre-configuring the number of HARQ processes corresponding to authorization;
pre-configuring a difference value between a first HARQ process number corresponding to the authorization and 0;
the direct communication sending terminal pre-configures an offset value between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process.
In a possible implementation manner, the determining, by the direct communication receiving terminal, the HARQ process number that each HARQ process is authorized to use by the direct communication sending terminal in a pre-configuration manner according to the direct communication interface auxiliary information includes:
the direct communication receiving terminal determines the HARQ process number corresponding to each HARQ process through the following formula according to the auxiliary information of the direct communication interface and through the pre-configuration authorization of the direct communication sending terminal:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein, CURRENT _ Time is the CURRENT Time, period is the period of pre-configuration authorization in the auxiliary information of the direct communication interface, i is the index number of pre-configuration authorization in the auxiliary information of the direct communication interface, and nrofHARQ-processesiNumber of HARQ processes corresponding to a pre-configured grant in direct communication interface assistance information, HARQoffsetiA difference value between a first HARQ process number corresponding to a pre-configuration authorization in the auxiliary information of the direct communication interface and 0;
and the direct communication receiving terminal performs HARQ process number mapping on HARQ process numbers corresponding to each HARQ process which are pre-configured and authorized by the direct communication sending terminal, and takes the first target HARQ process number mapped by each HARQ process number as the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and used by each HARQ process.
In a possible implementation manner, a direct communication receiving terminal pre-configures and authorizes a direct communication sending terminal to perform HARQ process number mapping for a HARQ process number corresponding to each HARQ process, including:
the direct communication receiving terminal determines an offset value corresponding to each HARQ process which is pre-configured and authorized by the direct communication sending terminal according to the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is used by the direct communication sending terminal in the auxiliary information of the direct communication interface;
and the direct communication receiving terminal takes the sum of the HARQ process number corresponding to each HARQ process and the offset value corresponding to the HARQ process, which is pre-configured and authorized by the direct communication sending terminal, as the HARQ process number used by each HARQ process, which is pre-configured and authorized by the direct communication sending terminal.
In a possible implementation manner, after the direct communication receiving terminal determines, according to the direct communication interface auxiliary information, that the direct communication sending terminal pre-configures an HARQ process number authorized to be used by each HARQ process, the method further includes:
and the direct communication receiving terminal performs HARQ process number mapping on the HARQ process numbers which are pre-configured and authorized by the direct communication sending terminal and are used by each HARQ process, and the second target HARQ process numbers which are mapped by each HARQ process number are used as the HARQ process numbers which are pre-configured and authorized by the direct communication receiving terminal and used by each HARQ process.
In a possible implementation manner, the method for a direct communication receiving terminal to perform HARQ process number mapping on HARQ process numbers which are pre-configured and authorized by a direct communication sending terminal to be used by each HARQ process, and using a second target HARQ process number after each HARQ process number mapping as a HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process includes:
the method comprises the steps that HARQ process numbers authorized to be used by any HARQ process are pre-configured for a direct communication sending terminal, if the HARQ process numbers are not occupied at the current time of a direct communication receiving terminal, the direct communication receiving terminal determines that a second target HARQ process number is the same as the HARQ process number corresponding to the HARQ process, or the direct communication receiving terminal determines that the second target HARQ process number is any HARQ process number which is idle at the current time of the direct communication receiving terminal;
and if the HARQ process number is occupied at the direct communication receiving terminal, the direct communication receiving terminal determines that the second target HARQ process number is any HARQ process number which is idle at the direct communication receiving terminal.
In one possible implementation manner, the method for receiving the direct communication interface assistance information sent by the direct communication sending terminal by the direct communication receiving terminal includes:
the direct communication receiving terminal receives the auxiliary information of the direct communication interface sent by the direct communication sending terminal through the SCI; or
The direct communication receiving terminal receives the direct communication interface auxiliary information sent by the direct communication sending terminal through a PC5-RRC signaling; or
The direct communication receiving terminal receives the direct communication interface assistance information transmitted by the direct communication transmitting terminal through the MAC CE.
An embodiment of the present application provides a readable storage medium, which is a non-volatile storage medium, and the readable storage medium is a non-volatile readable storage medium, and includes program code, when the program code is executed on a computing device, the program code is configured to cause the computing device to execute the method for determining a HARQ process number described above.
Embodiments of the present application provide a computer program product containing instructions, which when run on a computer, cause the computing device to perform the above method for determining a HARQ process number.
The present application is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the application. It will be understood that one block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.
Accordingly, the subject application may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (39)

1. A method for determining HARQ process numbers, the method comprising:
a direct communication sending terminal determines direct communication interface auxiliary information, wherein the direct communication interface auxiliary information is used for assisting a direct communication receiving terminal corresponding to the direct communication sending terminal to determine an HARQ process number which is pre-configured and authorized by the direct communication sending terminal to be used by each HARQ process;
and the direct communication sending terminal sends the auxiliary information of the direct communication interface to the direct communication receiving terminal.
2. The method of claim 1, wherein before the direct communication transmitting terminal determines the direct communication interface assistance information, further comprising:
the direct communication sending terminal determines the HARQ process number which is pre-configured and authorized to be used by each HARQ process by the direct communication sending terminal according to the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein the CURRENT _ Time is the CURRENT Time, the period is the period of the pre-configuration authorization, i is the index number of the pre-configuration authorization, and nrofHARQ-processesiNumber of HARQ processes corresponding to the pre-configured grant, HARQoffsetiAnd the difference value between the number of the first HARQ process corresponding to the pre-configuration authorization and 0.
3. The method of claim 2, wherein the direct communication interface assistance information comprises one or a combination of:
the preconfigured authorized index number;
a period of the pre-configured grant;
the number of HARQ processes corresponding to the pre-configuration authorization;
a difference between a first HARQ process number corresponding to the pre-configured grant and 0;
alternatively, the direct communication interface assistance information comprises one or a combination of the following:
the preconfigured authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
4. The method of claim 1, wherein before the direct communication transmitting terminal determines the direct communication interface assistance information, further comprising:
the direct communication sending terminal determines the HARQ process number corresponding to each HARQ process authorized by the direct communication sending terminal through the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein the CURRENT _ Time is the CURRENT Time, the period is the period of the pre-configuration authorization, i is the index number of the pre-configuration authorization, and nrofHARQ-processesiNumber of HARQ processes corresponding to the pre-configured grant, HARQoffsetiA difference value between a first HARQ process number corresponding to the pre-configuration authorization and 0;
and the direct communication sending terminal performs HARQ process number mapping on HARQ process numbers corresponding to each HARQ process authorized by the direct communication sending terminal in a pre-configuration manner, and takes the first target HARQ process number mapped by each HARQ process number as the HARQ process number authorized by the direct communication sending terminal in the pre-configuration manner.
5. The method of claim 4, wherein the direct communication sending terminal performs HARQ process number mapping on HARQ process numbers corresponding to each HARQ process for which the direct communication sending terminal is pre-configured and authorized, and comprises:
pre-configuring a HARQ process number corresponding to any HARQ process authorized by the direct communication sending terminal, and if the HARQ process number is not occupied currently at the direct communication sending terminal, determining that the first target HARQ process number is the same as the HARQ process number corresponding to the HARQ process by the direct communication sending terminal, or determining that the first target HARQ process number is any HARQ process number which is idle currently at the direct communication sending terminal by the direct communication sending terminal;
and if the HARQ process number is occupied at the direct communication sending terminal currently, the direct communication sending terminal determines that the first target HARQ process number is any HARQ process number which is idle at the direct communication sending terminal currently.
6. The method of claim 4, wherein the direct communication interface assistance information comprises one or a combination of:
the preconfigured authorized index number;
a period of the pre-configured grant;
the number of HARQ processes corresponding to the pre-configuration authorization;
a difference between a first HARQ process number corresponding to the pre-configured grant and 0;
the direct communication sending terminal pre-configures an offset value between an HARQ process number corresponding to each HARQ process and an HARQ process number used by each HARQ process;
alternatively, the direct communication interface assistance information includes one or a combination of the following:
the preconfigured authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
7. The method according to any one of claims 1 to 6, wherein the sending terminal of direct communication sends the auxiliary information of direct communication interface to a receiving terminal of direct communication of the sending terminal of direct communication, comprising:
the direct communication sending terminal sends the auxiliary information of the direct communication interface to a direct communication receiving terminal of the direct communication sending terminal through direct communication interface control information SCI; or
The direct communication sending terminal sends the auxiliary information of the direct communication interface to a direct communication receiving terminal of the direct communication sending terminal through direct communication interface radio resource control (PC 5-RRC) signaling; or
And the direct communication sending terminal sends the auxiliary information of the direct communication interface to a direct communication receiving terminal of the direct communication sending terminal through a direct communication interface media access control unit (MAC CE).
8. A method for determining HARQ process numbers, the method comprising:
the direct communication receiving terminal receives the direct communication interface auxiliary information sent by the direct communication sending terminal corresponding to the direct communication receiving terminal;
and the direct communication receiving terminal determines the HARQ process number which is used by each HARQ process and authorized by the direct communication sending terminal in a pre-configuration mode according to the auxiliary information of the direct communication interface.
9. The method of claim 8, wherein the direct communication interface assistance information comprises one or a combination of:
the preconfigured authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
10. The method of claim 9, wherein the direct communication receiving terminal determining, according to the direct communication interface assistance information, that the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process, comprises:
the direct communication receiving terminal directly determines the HARQ process number which is used by each HARQ process and is authorized by the direct communication sending terminal in a pre-configuration mode according to the index number of the pre-configuration authorization in the auxiliary information of the direct communication interface and the HARQ process number which is used by each HARQ process and is authorized by the direct communication sending terminal in the pre-configuration mode; or,
and the direct communication receiving terminal directly determines the HARQ process number which is used by each HARQ process and authorized by the direct communication sending terminal through pre-configuration according to the HARQ process number which is used by each HARQ process and authorized by the direct communication sending terminal through pre-configuration in the auxiliary information of the direct communication interface.
11. The method of claim 8, wherein the direct communication interface assistance information comprises one or a combination of:
the preconfigured authorized index number;
a period of the pre-configured grant;
the number of HARQ processes corresponding to the pre-configuration authorization;
a difference between a first HARQ process number corresponding to the pre-configured grant and 0.
12. The method of claim 11, wherein the direct communication receiving terminal determining, according to the direct communication interface assistance information, that the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process, comprises:
the direct communication receiving terminal determines the HARQ process number which is used by each HARQ process and is authorized by the direct communication sending terminal through the following formula according to the auxiliary information of the direct communication interface:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein the CURRENT _ Time is a CURRENT Time, the period is the period of the pre-configuration authorization in the direct communication interface auxiliary information, i is the index number of the pre-configuration authorization in the direct communication interface auxiliary information, and nrofHARQ-processesiThe number of HARQ processes corresponding to the pre-configuration authorization in the auxiliary information of the direct communication interface, HARQoffsetiA difference between a first HARQ process number corresponding to the pre-configured grant in direct communication interface assistance information and 0.
13. The method of claim 12, wherein the direct communication interface assistance information comprises one or a combination of:
the preconfigured authorized index number;
a period of the pre-configured grant;
the number of HARQ processes corresponding to the pre-configuration authorization;
a difference between a first HARQ process number corresponding to the pre-configured grant and 0;
and the direct communication sending terminal pre-configures an offset value between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process.
14. The method of claim 13, wherein the direct communication receiving terminal determining, according to the direct communication interface assistance information, that the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process, comprises:
the direct communication receiving terminal determines the HARQ process number corresponding to each HARQ process which is pre-configured and authorized by the direct communication sending terminal according to the auxiliary information of the direct communication interface by the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein the CURRENT _ Time is a CURRENT Time, the period is the period of the pre-configuration authorization in the direct communication interface auxiliary information, i is the index number of the pre-configuration authorization in the direct communication interface auxiliary information, and nrofHARQ-processesiThe number of HARQ processes corresponding to the pre-configuration authorization in the auxiliary information of the direct communication interface, HARQoffsetiA difference value between a first HARQ process number corresponding to the pre-configuration authorization in the direct communication interface auxiliary information and 0;
and the direct communication receiving terminal performs HARQ process number mapping on HARQ process numbers corresponding to each HARQ process which are pre-configured and authorized by the direct communication sending terminal, and takes the first target HARQ process number mapped by each HARQ process number as the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and used by each HARQ process.
15. The method of claim 14, wherein the direct communication receiving terminal performs HARQ process number mapping by authorizing HARQ process numbers corresponding to each HARQ process for the direct communication transmitting terminal pre-configuration, comprising:
the direct communication receiving terminal determines an offset value corresponding to each HARQ process which is pre-configured and authorized by the direct communication sending terminal according to the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is corresponding to each HARQ process in the auxiliary information of the direct communication interface and the offset value between the HARQ process numbers which are pre-configured and authorized by the direct communication sending terminal and are used by each HARQ process;
and the direct communication receiving terminal takes the sum of the HARQ process number corresponding to each HARQ process authorized by the direct communication sending terminal in the pre-configuration mode and the offset value corresponding to the HARQ process as the HARQ process number used by each HARQ process authorized by the direct communication sending terminal in the pre-configuration mode.
16. The method of claim 8, wherein after the direct communication receiving terminal determines, according to the direct communication interface assistance information, that the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process, the method further comprises:
and the direct communication receiving terminal performs HARQ process number mapping on the HARQ process numbers which are pre-configured and authorized by the direct communication sending terminal and are used by each HARQ process, and the second target HARQ process number mapped by each HARQ process number is used as the HARQ process number which is pre-configured and authorized by the direct communication receiving terminal and is used by each HARQ process.
17. The method of claim 16, wherein the direct communication receiving terminal pre-configuring HARQ process numbers authorized for use by each HARQ process for the direct communication transmitting terminal to perform HARQ process number mapping comprises:
pre-configuring a HARQ process number authorized to be used by any HARQ process for the direct communication sending terminal, and if the HARQ process number is not occupied currently at the direct communication receiving terminal, determining that the second target HARQ process number is the same as the HARQ process number corresponding to the HARQ process by the direct communication receiving terminal, or determining that the second target HARQ process number is any HARQ process number which is idle currently at the direct communication receiving terminal by the direct communication receiving terminal;
and if the HARQ process number is occupied at the direct communication receiving terminal currently, the direct communication receiving terminal determines that the second target HARQ process number is any idle HARQ process number of the direct communication receiving terminal currently.
18. The method according to any one of claims 8 to 17, wherein the receiving terminal of direct communication receives the auxiliary information of direct communication interface sent by the sending terminal of direct communication, including:
the direct communication receiving terminal receives the direct communication interface auxiliary information sent by the direct communication sending terminal through the SCI; or
The direct communication receiving terminal receives the direct communication interface auxiliary information sent by the direct communication sending terminal through PC5-RRC signaling; or
And the direct communication receiving terminal receives the direct communication interface auxiliary information transmitted by the direct communication transmitting terminal through the MAC CE.
19. A direct communication transmission terminal for determining a HARQ process number, the direct communication transmission terminal comprising: a processor, a memory, and a transceiver;
the processor is used for reading the program in the memory and executing the following processes:
determining direct communication interface auxiliary information, wherein the direct communication interface auxiliary information is used for assisting a direct communication receiving terminal corresponding to the direct communication sending terminal to determine an HARQ process number which is used by each HARQ process and authorized by the direct communication sending terminal in a pre-configuration mode;
and sending the auxiliary information of the direct communication interface to the direct communication receiving terminal through the transceiver.
20. The direct communication transmission terminal according to claim 19, wherein the processor is further configured to:
determining the HARQ process number which is authorized to be used by each HARQ process by the direct communication sending terminal through the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein the CURRENT _ Time is the CURRENT Time, the period is the period of the pre-configuration authorization, i is the index number of the pre-configuration authorization, and nrofHARQ-processesiNumber of HARQ processes corresponding to the pre-configured grant, HARQoffsetiAnd the difference value between the number of the first HARQ process corresponding to the pre-configuration authorization and 0.
21. The direct communication transmission terminal according to claim 20, wherein the direct communication interface assistance information includes one or a combination of:
the preconfigured authorized index number;
a period of the pre-configured grant;
the number of HARQ processes corresponding to the pre-configuration authorization;
a difference between a first HARQ process number corresponding to the pre-configured grant and 0;
alternatively, the direct communication interface assistance information comprises one or a combination of the following:
the preconfigured authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
22. The direct communication transmission terminal according to claim 19, wherein the processor is further configured to:
determining the HARQ process number corresponding to each HARQ process authorized by the direct communication sending terminal through the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein the CURRENT _ Time is the CURRENT Time, the period is the period of the pre-configuration authorization, i is the index number of the pre-configuration authorization, and nrofHARQ-processesiNumber of HARQ processes corresponding to the pre-configured grant, HARQoffsetiA difference value between a first HARQ process number corresponding to the pre-configuration authorization and 0;
and performing HARQ process number mapping on HARQ process numbers corresponding to each HARQ process authorized by the direct communication sending terminal, and taking the first target HARQ process number mapped by each HARQ process number as the HARQ process number used by each HARQ process authorized by the direct communication sending terminal.
23. The direct communication transmitting terminal of claim 22, wherein the processor is specifically configured to:
pre-configuring a HARQ process number corresponding to any HARQ process authorized for the direct communication sending terminal, and if the HARQ process number is not occupied currently at the direct communication sending terminal, determining that the first target HARQ process number is the same as the HARQ process number corresponding to the HARQ process, or determining that the first target HARQ process number is any HARQ process number which is idle currently at the direct communication sending terminal;
and if the HARQ process number is occupied at the direct communication sending terminal currently, determining that the first target HARQ process number is any idle HARQ process number of the direct communication sending terminal currently.
24. The direct communication transmission terminal according to claim 22, wherein the direct communication interface assistance information includes one or a combination of:
the preconfigured authorized index number;
a period of the pre-configured grant;
the number of HARQ processes corresponding to the pre-configuration authorization;
a difference between a first HARQ process number corresponding to the pre-configured grant and 0;
the direct communication sending terminal pre-configures an offset value between an HARQ process number corresponding to each HARQ process and an HARQ process number used by each HARQ process;
alternatively, the direct communication interface assistance information includes one or a combination of the following:
the preconfigured authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
25. The direct communication transmitting terminal according to any of claims 19 to 24, wherein the processor is specifically configured to:
transmitting the direct communication interface assistance information to a direct communication receiving terminal of the direct communication transmitting terminal through an SCI; or
Transmitting the direct communication interface assistance information to a direct communication receiving terminal of the direct communication transmitting terminal through PC5-RRC signaling; or
And transmitting the direct communication interface auxiliary information to a direct communication receiving terminal of the direct communication transmitting terminal through the MAC CE.
26. A direct communication receiving terminal for determining a HARQ process number, the direct communication transmitting terminal comprising: a processor, a memory, and a transceiver;
the processor is used for reading the program in the memory and executing the following processes:
receiving, by the receiver, direct communication interface auxiliary information sent by a direct communication sending terminal corresponding to the direct communication receiving terminal;
and determining the HARQ process number which is used by each HARQ process and authorized by the direct communication sending terminal in a pre-configuration manner according to the auxiliary information of the direct communication interface.
27. The direct communication receiving terminal of claim 26, wherein the direct communication interface assistance information includes one or a combination of:
the preconfigured authorized index number;
the direct communication sending terminal pre-configures the HARQ process number authorized to be used by each HARQ process.
28. The direct communication receiving terminal of claim 27, wherein the processor is specifically configured to:
directly determining the HARQ process number which is used by each HARQ process and is authorized by the direct communication sending terminal in a pre-configuration mode according to the index number of the pre-configuration authorization in the auxiliary information of the direct communication interface and the HARQ process number which is used by each HARQ process and is authorized by the direct communication sending terminal in the pre-configuration mode; or,
and directly determining the HARQ process number which is used by each HARQ process and authorized by the direct communication sending terminal through pre-configuration according to the HARQ process number which is used by each HARQ process and authorized by the direct communication sending terminal through pre-configuration in the auxiliary information of the direct communication interface.
29. The direct communication receiving terminal of claim 26, wherein the direct communication interface assistance information includes one or a combination of:
the preconfigured authorized index number;
a period of the pre-configured grant;
the number of HARQ processes corresponding to the pre-configuration authorization;
a difference between a first HARQ process number corresponding to the pre-configured grant and 0.
30. The direct communication receiving terminal of claim 29, wherein the processor is specifically configured to:
according to the auxiliary information of the direct communication interface, determining the HARQ process number which is used by each HARQ process and is authorized by the direct communication sending terminal through the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein the CURRENT _ Time is a CURRENT Time, the period is the period of the pre-configuration authorization in the direct communication interface auxiliary information, i is the index number of the pre-configuration authorization in the direct communication interface auxiliary information, and nrofHARQ-processesiThe number of HARQ processes corresponding to the pre-configuration authorization in the auxiliary information of the direct communication interface, HARQoffsetiA difference between a first HARQ process number corresponding to the pre-configured grant in the direct communication interface assistance information and 0.
31. The direct communication receiving terminal of claim 26, wherein the direct communication interface assistance information includes one or a combination of:
the preconfigured authorized index number;
a period of the pre-configured grant;
the number of HARQ processes corresponding to the pre-configuration authorization;
a difference between a first HARQ process number corresponding to the pre-configured grant and 0;
and the direct communication sending terminal pre-configures an offset value between the HARQ process number corresponding to each HARQ process and the HARQ process number used by each HARQ process.
32. The direct communication receiving terminal of claim 31, wherein the processor is specifically configured to:
according to the auxiliary information of the direct communication interface, determining the HARQ process number corresponding to each HARQ process which is pre-configured and authorized by the direct communication sending terminal through the following formula:
HARQ Process ID
＝[floor(CURRENT_Time
/periodicity)]modulo nrofHARQ-Processsesi+HARQoffseti
wherein the CURRENT _ Time is a CURRENT Time, the period is the period of the pre-configuration authorization in the direct communication interface auxiliary information, i is the index number of the pre-configuration authorization in the direct communication interface auxiliary information, and nrofHARQ-processesiThe number of HARQ processes corresponding to the pre-configuration authorization in the auxiliary information of the direct communication interface, HARQoffsetiA difference value between a first HARQ process number corresponding to the pre-configuration authorization in the direct communication interface auxiliary information and 0;
and performing HARQ process number mapping on HARQ process numbers corresponding to each HARQ process authorized by the direct communication sending terminal, and taking the first target HARQ process number mapped by each HARQ process number as the HARQ process number used by each HARQ process authorized by the direct communication sending terminal.
33. The direct communication receiving terminal of claim 32, wherein the processor is specifically configured to:
determining an offset value corresponding to each HARQ process which is pre-configured and authorized by the direct communication sending terminal according to the HARQ process number which is pre-configured and authorized by the direct communication sending terminal and is used by the direct communication sending terminal;
and taking the sum of the HARQ process number corresponding to each HARQ process authorized by the direct communication sending terminal in pre-configuration and the offset value corresponding to the HARQ process as the HARQ process number used by each HARQ process authorized by the direct communication sending terminal in pre-configuration.
34. The direct communication receiving terminal of claim 26, wherein the processor is further configured to:
and performing HARQ process number mapping on the HARQ process numbers which are pre-configured and authorized by the direct communication sending terminal and are used by each HARQ process, and taking the second target HARQ process number after the HARQ process number mapping as the HARQ process number which is pre-configured and authorized by the direct communication receiving terminal and is used by each HARQ process.
35. The direct communication receiving terminal of claim 34, wherein the processor is specifically configured to:
pre-configuring a HARQ process number authorized to be used by any HARQ process for the direct communication sending terminal, and if the HARQ process number is not occupied currently at the direct communication receiving terminal, determining that the second target HARQ process number is the same as the HARQ process number used by the HARQ process, or determining that the second target HARQ process number is any HARQ process number which is idle currently at the direct communication receiving terminal;
and if the HARQ process number is occupied at the direct communication receiving terminal currently, determining that the second target HARQ process number is any idle HARQ process number of the direct communication receiving terminal currently.
36. The direct communication receiving terminal according to any of claims 26 to 35, wherein the processor is specifically configured to:
receiving direct communication interface auxiliary information sent by the direct communication sending terminal through the SCI; or
Receiving direct communication interface auxiliary information sent by the direct communication sending terminal through PC5-RRC signaling; or
And receiving the direct communication interface auxiliary information transmitted by the direct communication transmitting terminal through the MAC CE.
37. A direct communication transmission terminal for determining a HARQ process number, the direct communication transmission terminal comprising: the device comprises a first determining module and a sending module;
the first determination module is to: determining direct communication interface auxiliary information, wherein the direct communication interface auxiliary information is used for assisting a direct communication receiving terminal corresponding to the direct communication sending terminal to determine an HARQ process number which is used by each HARQ process and authorized by the direct communication sending terminal in a pre-configuration mode;
the sending module is used for: and sending the auxiliary information of the direct communication interface to the direct communication receiving terminal.
38. A direct communication receiving terminal for determining a HARQ process number, the direct communication receiving terminal comprising: a receiving module and a second determining module;
the receiving module is used for: receiving direct communication interface auxiliary information sent by a direct communication sending terminal corresponding to the direct communication receiving terminal;
the second determination module is to: and determining the HARQ process number which is used by each HARQ process and authorized by the direct communication sending terminal in a pre-configuration manner according to the auxiliary information of the direct communication interface.
39. A computer storage medium having a computer program stored thereon, the program, when executed by a processor, implementing the steps of a method according to any one of claims 1 to 7 or implementing the steps of a method according to any one of claims 8 to 18.
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