CN113661754B - Data transmission method, device, user equipment and storage medium - Google Patents

Data transmission method, device, user equipment and storage medium Download PDF

Info

Publication number
CN113661754B
CN113661754B CN201980095173.7A CN201980095173A CN113661754B CN 113661754 B CN113661754 B CN 113661754B CN 201980095173 A CN201980095173 A CN 201980095173A CN 113661754 B CN113661754 B CN 113661754B
Authority
CN
China
Prior art keywords
target data
base station
pur
user equipment
data transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201980095173.7A
Other languages
Chinese (zh)
Other versions
CN113661754A (en
Inventor
石聪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Publication of CN113661754A publication Critical patent/CN113661754A/en
Application granted granted Critical
Publication of CN113661754B publication Critical patent/CN113661754B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Landscapes

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

Abstract

The application provides a data transmission method, a data transmission device, user equipment and a storage medium, and relates to the technical field of communication. The method comprises the following steps: transmitting target data to the base station through a first special pre-configured uplink resource D-PUR; and retransmitting the target data to the base station through the second D-PUR if the target data transmission fails. In the embodiment of the application, user equipment transmits target data to a base station through a first D-PUR; and if the target data transmission fails, retransmitting the target data to the base station through the second D-PUR. Therefore, if the target data transmission fails, the user equipment can retransmit the target data to the base station through the second D-PUR by itself, so that the data loss is reduced, and the reliability of the data transmission is improved.

Description

Data transmission method, device, user equipment and storage medium
Technical Field
The present application relates to the field of communications technologies, and in particular, to a data transmission method, a data transmission device, a user equipment, and a storage medium.
Background
In the 5G (5 th-Generation, fifth Generation mobile communication technology) technology, in order to reduce the energy consumption of the user equipment, the user equipment such as an intelligent water meter, an intelligent gas meter, a temperature and humidity controller in the internet of things system can transmit data to the base station in an idle state or an inactive state.
In the related art, a base station configures a D-PUR (Dedicated Preconfigured Uplink Resource, dedicated pre-configured uplink resource) for transmitting data for a user equipment; and the user equipment transmits data to the base station through the D-PUR, and if the user equipment does not receive the feedback information of the base station within the preset time length, the data transmission failure transmitted to the base station through the D-PUR is determined.
Disclosure of Invention
The embodiment of the application provides a data transmission method, a data transmission device, user equipment and a storage medium, which can reduce loss in the data transmission process. The technical scheme is as follows:
in one aspect, a data transmission method is provided and applied to a user equipment, and the method includes:
transmitting target data to the base station through a first special pre-configured uplink resource D-PUR; and retransmitting the target data to the base station through a second D-PUR if the target data transmission fails.
In a possible implementation manner, before the retransmission of the target data to the base station through the second D-PUR, the method further includes:
and if the available D-PUR exists in the plurality of D-PURs to which the first D-PUR belongs, selecting an available second D-PUR from the plurality of D-PURs, wherein the second D-PUR is used for retransmitting the target data to the base station.
In another possible implementation, the selecting the available second D-PUR from the plurality of D-PURs includes:
selecting a second D-PUR from the plurality of D-PURs that is closest to the first D-PUR and that is unused; or,
and selecting a second D-PUR which is matched with the data quantity and is not used from the plurality of D-PURs according to the data quantity of the target data.
In another possible implementation, the method further includes:
receiving the reassigned D-PUR of the base station if there is no available D-PUR of the plurality of D-PURs;
and selecting an available second D-PUR from the D-PURs reassigned by the base station.
In another possible implementation, the method further includes:
if feedback information returned by the base station is not received within a preset time period after the target data is transmitted to the base station, determining that the target data transmission fails; or,
and if the control message returned by the base station and used for indicating the failure of the transmission of the target data is received in a preset time period after the transmission of the target data to the base station, determining that the transmission of the target data fails.
In another possible implementation, the control message comprises a radio resource control, RRC, message.
In another possible implementation manner, if the control message returned by the base station and used for indicating the failure of the transmission of the target data is received in a preset time period after the transmission of the target data to the base station, determining that the transmission of the target data fails includes:
and if the Physical Downlink Shared Channel (PDSCH) message sent by the base station through a Physical Downlink Control Channel (PDCCH) is received in a preset time period after the target data is transmitted to the base station, and the RRC message used for indicating the failure of the transmission of the target data is included in the PDSCH message, determining that the transmission of the target data fails.
In another possible implementation manner, the control message includes an uplink retransmission control message; the method further comprises the steps of:
if the PDCCH message sent by the base station is received in a preset time period after the target data is transmitted to the base station, the PDCCH message comprises an uplink retransmission control message for indicating that the target data is transmitted to fail, and the uplink retransmission control message comprises a resource identifier of an uplink scheduling grant (UL grant);
and retransmitting the target data to the base station through the UL grant resources corresponding to the UL grant resource identifications.
In another possible implementation, the target data is stored in a buffer, and the method further includes:
deleting the target data in the buffer area when the target data is successfully transmitted; or,
deleting the target data in the buffer when there is no available D-PUR of the plurality of D-PURs; or,
and deleting the target data in the buffer area when the retransmission times of the target data reach the preset times.
In another possible implementation manner, the buffer is a HARQ buffer.
In another possible implementation manner, the transmitting the target data to the base station through the first dedicated preconfigured uplink resource D-PUR includes:
and when the user equipment is in an idle state, a suspend state or an inactive state, transmitting target data to a base station through the first D-PUR.
In another aspect, there is provided a data transmission apparatus applied to a user equipment, the apparatus comprising:
the transmission module is used for transmitting target data to the base station through the first special pre-configured uplink resource D-PUR; and retransmitting the target data to the base station through a second D-PUR if the target data transmission fails.
In one possible implementation, the apparatus further includes:
a selecting module, configured to select an available second D-PUR from among the plurality of D-PURs, if there is an available D-PUR among the plurality of D-PURs to which the first D-PUR belongs, where the second D-PUR is used to retransmit the target data to the base station.
In another possible implementation, the selecting module is further configured to select a second D-PUR from the plurality of D-PURs that is closest to the first D-PUR and is not used;
the selecting module is further configured to select, according to the data amount of the target data, a second D-PUR that matches the data amount and is not used from the plurality of D-PURs.
In another possible implementation, the selecting module is further configured to receive a D-PUR reassigned by the base station if there is no available D-PUR in the plurality of D-PURs; and selecting an available second D-PUR from the D-PURs reassigned by the base station.
In another possible implementation, the apparatus further includes:
the determining module is used for determining that the target data transmission fails if feedback information returned by the base station is not received within a preset time period after the target data is transmitted to the base station;
And the determining module is further configured to determine that the target data transmission fails if a control message returned by the base station and used for indicating the target data transmission failure is received in a preset time period after the target data is transmitted to the base station.
In another possible implementation, the control message comprises a radio resource control, RRC, message.
In another possible implementation manner, the determining module is further configured to determine that the target data transmission fails if a physical downlink shared channel PDSCH message sent by the base station through a physical downlink control channel PDCCH is received in a preset duration after the target data is transmitted to the base station, where the PDSCH message includes the RRC message for indicating that the target data transmission fails.
In another possible implementation manner, the control message includes an uplink retransmission control message; the transmission module is further configured to receive, if a PDCCH message sent by the base station is received in a preset time period after the target data is transmitted to the base station, where the PDCCH message includes an uplink retransmission control message for indicating that the target data is transmitted failure, and the uplink retransmission control message includes a resource identifier of an uplink scheduling grant UL grant; and retransmitting the target data to the base station through ULMART resources corresponding to the resource identification of the UL grant.
In another possible implementation, the target data is stored in a buffer, and the apparatus further includes:
the deleting module is used for deleting the target data in the buffer area when the target data is successfully transmitted;
the deleting module is further configured to delete the target data in the buffer when there is no available D-PUR in the plurality of D-PURs;
the deleting module is further configured to delete the target data in the buffer area when the retransmission times of the target data reach a preset number.
In another possible implementation manner, the buffer is a HARQ buffer.
In another possible implementation manner, the transmission module is further configured to transmit, when the ue is in an idle state, a suspend state, or an inactive state, target data to a base station through the first D-PUR.
In another aspect, a user equipment is provided, where the user equipment includes a processor and a memory, where the memory stores at least one instruction, and the at least one instruction is loaded and executed by the processor to implement the data transmission method according to any one of the possible implementations described above.
In another aspect, a computer readable storage medium having at least one instruction stored therein is provided, the at least one instruction being loaded and executed by a processor to implement a data transmission method according to any one of the possible implementations described above.
In another aspect, a chip is provided, the chip including programmable logic circuits and/or program instructions, which when the chip is run is configured to implement the data transmission method according to any one of the possible implementations described above.
In another aspect, a computer program product is provided, comprising one or more computer programs, which when executed by a processor, are adapted to carry out the data transmission method according to any one of the possible implementations described above.
The technical scheme provided by the embodiment of the application has the beneficial effects that at least:
the user equipment transmits target data to the base station through the first D-PUR; and if the target data transmission fails, retransmitting the target data to the base station through the second D-PUR. Therefore, if the target data transmission fails, the user equipment can retransmit the target data to the base station through the second D-PUR by itself, so that the data loss is reduced, and the reliability of the data transmission is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of an implementation environment provided by an exemplary embodiment of the present application;
fig. 2 is a flow chart of a data transmission method according to an exemplary embodiment of the present application;
fig. 3 is a schematic diagram of data transmission between a ue and a base station according to an exemplary embodiment of the present application;
fig. 4 is a schematic diagram of data transmission between a ue and a base station according to an exemplary embodiment of the present application;
fig. 5 is a schematic structural view of a data transmission device according to an exemplary embodiment of the present application;
fig. 6 is a schematic structural diagram of an apparatus according to an exemplary embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic diagram illustrating an implementation environment according to an example embodiment. The implementation environment mainly includes a User Equipment (UE) 110 and a base station 120. The ue 110 may communicate with the base station 120 through a communication network, where the ue 110 may perform data transmission according to the method provided by the embodiment of the present application, and the ue 110 is all devices capable of implementing data transmission, and in some embodiments, the ue 110 may also be referred to as a terminal; the base station may be an evolved Node B (eNB), that is, a fourth generation mobile communication technology (the 4th Generation mobile communication technology,4G) base station; or 5g base station (5 th-generation Node B, gNB), to which embodiments of the present application are not limited.
In the embodiment of the present application, the resource allocated by the base station 120 to the user equipment 110 is D-PUR; user equipment 110 transmits the target data to base station 120 through the D-PUR.
The user equipment 110 may be any user equipment in the internet of things system, or may be user equipment with a single service type in the internet of things system. For example, the user device 110 may be a user device such as a smart water meter, a smart electricity meter, a smart gas meter, a temperature controller, a humidity controller, and the like. In long term evolution (Long Term Evolution, LTE) systems, small data transmission (Early Data Transmission, EDT) has been introduced. The small data transmission refers to the transmission of uplink and/or downlink small data by the ue 110 in an idle state (idle), a suspended state (suspended), or an inactive state (inactive).
The small data may be data with smaller data size, that is, the small data is data with smaller data size than the preset data size. For example, the user equipment 110 is a temperature controller, and accordingly, the small data may be temperature change data detected by the temperature controller. The small data may also be data corresponding to a specified service type. The specified traffic type may be a non-immediate traffic type. The preset data volume can be set and changed according to the needs; in the embodiment of the present application, the preset data amount is not particularly limited; for example, the preset data amount may be 5 bits or 5 megabits, etc. The target data transmitted by the user equipment 110 to the base station 120 through the D-PUR may be the small data as described above.
Fig. 2 is a flowchart illustrating a data transmission method according to an exemplary embodiment, which may be applied to a user equipment in the above-described implementation environment, and the method may include the following implementation steps:
step 201: the user equipment transmits the target data to the base station through the first D-PUR.
In a 5G network, user equipment can transmit target data to a base station through a first D-PUR in any state; the user equipment may also transmit the target data to the base station via the first D-PUR in certain specific states. The specific state may be an idle state (idle), a suspend state (suspend), or an inactive state (inactive). Accordingly, the steps may be: and when the user equipment is in idle, suspend or inactive, transmitting target data to the base station through the first D-PUR.
When the user equipment is in idle, suspend or inactive, the base station configures at least one D-PUR for the user equipment, and the user equipment can transmit target data to the base station through a first D-PUR in the at least one D-PUR. The base station may periodically configure D-PUR for the user equipment, may configure D-PUR for the user equipment when the user equipment is first accessed to the base station, and may also configure D-PUR for the user equipment when the user equipment needs to transmit the target data. In the embodiment of the present application, the actual manner in which the base station configures the D-PUR for the user equipment is not specifically limited. And, when the base station configures the D-PUR for the user equipment, the duration of the D-PUR and the TB size (Transport Block size ) of the D-PUR are also configured. For example, the base station may configure the user equipment with a D-PUR once every 1 hour, which may have a duration of 1 minute or 1 hour, etc., with the TB size of the D-PUR being the maximum amount of data that can be transmitted over the D-PUR.
In the embodiment of the application, the base station can configure one D-PUR for the user equipment at a time, and can also configure a plurality of D-PURs for the user equipment at a time. In the embodiment of the application, the number of the D-PUR configured by the base station for the user equipment is not particularly limited. In one possible implementation, the base station may configure at least one D-PUR for the user equipment according to the equipment type of the user equipment, which matches the equipment type. For example, the user device is of a smart meter type; the base station configures 10D-PURs for the intelligent ammeter; the user equipment is a controller, and the base station configures 8D-PURs for the controller. In another possible implementation manner, the base station may further configure at least one D-PUR matching the service type for the user equipment according to the service type of the target data. In another possible implementation manner, the base station may further configure at least one D-PUR matching the data amount for the user equipment according to the data amount of the target data transmitted by the user equipment.
When the user equipment is in idle, suspend or inactive state, before transmitting the target data to the base station, the user equipment selects one D-PUR from at least one D-PUR configured by the base station, and in order to facilitate distinguishing from the D-PUR for subsequent retransmission, the D-PUR selected at this time is referred to as a first D-PUR. Wherein the step of the user equipment selecting one D-PUR from the at least one D-PUR configured by the base station may be: the user equipment may randomly select one D-PUR from at least one D-PUR configured by the base station; it is also possible to select from at least one D-PUR configured by the base station, the one closest to the last D-PUR used.
After the user equipment selects the first D-PUR, the user equipment transmits target data to the base station through the first D-PUR. The target data may be data in a Control Plane (CP) scheme or data in a User Plane (UP) scheme. When the target data is data in the control plane scheme, referring to fig. 3, the process of transmitting the target data to the base station by the user equipment may be implemented by the following steps (1) to (2), including:
(1) The user equipment sends a radio resource control data early transmission request (Radio Resource Control Early Data Request, RRCEarlyDataRequest) to the base station via the first D-PUR.
The RRCEarlyDataRequest comprises a device identifier of the user equipment, an establishment cause value establishntCause, and a dedicated Non-Access stratum (NAS) message DedimedinfoNAS.
The device identifier may be a temporary mobile subscriber identifier (S-TMSI) or a Serving-Temporary Mobile Subscriber Identity. The establishntcause is used to represent the access type of the user device; the dediedbnfonas carries the target data.
If the base station receives the target data of the user equipment and the target data is complete, the base station returns a control message for indicating successful transmission to the user equipment; if the base station receives the target data but the target data is incomplete, the base station returns a control message for indicating transmission failure to the user equipment; if the base station does not receive the target data, the base station does not return any message to the user equipment. Correspondingly, after the step (1), the method further comprises the step (2):
(2) The base station returns a control message to the user equipment.
The control message may be an RRC (Radio Resource Control ) message; and, when the target data transmission is successful, the control message may be a radio resource control data early transmission complete (Radio Resource Control Early Data Complete, RRCEarlyDataComplete) message. The RRCEarlyDataComplete message is used for indicating that the target data transmission is successful; and, the RRCEarlyDataComplete message may carry a dedicated downstream NAS message; the downlink NAS message carries downlink data to be transmitted. When the target data transmission fails, the control message may be a radio resource control connection reject (Radio Resource Control Connection Reject) message indicating that the target data transmission fails.
When the target data is data in the user plane scheme, referring to fig. 4, the process of transmitting the target data to the base station by the user equipment may be implemented by the following steps (a) to (B), including:
(A) The user equipment transmits a radio resource control connection resume request (Radio Resource Control Connection Resume Request, RRCConnectionResumeRequest) and target data to the base station through the first D-PUR.
The RRCConnectionResumeRequest includes a device identification of the user equipment, a resume cause value (resume au) and a resume message integrity authentication code (short Resume Message Authentication Code Integrity, shortresummac-I).
The device identifier may be resumeID of the device, the resume cause value is used to represent an access type of the user device, and the resume message integrity authentication code is used to identify and verify the user device.
(B) The base station returns a control message to the user equipment.
The control message may be an RRC message; and, when the target data transmission is successful, the control message may be a radio resource control connection release (Radio Resource Control Connection Release) message and downlink data to be transmitted. The RRCConnectionRelease message may include a release cause value release mechanism, a device identification of the user equipment, and a next hop link counter (Next Hop Chaining Counter, NCC), among others. The control message may be an RRCConnectionReject message when the target data transmission fails.
In the embodiment of the application, the user equipment can directly transmit the target data to the base station through the D-PUR, does not need to send a random access request to the base station, and transmits the target data to the base station after receiving the random access response of the base station, thereby simplifying the access step and improving the data transmission efficiency.
It should be noted that the target data is stored in the buffer, so that the target data is extracted from the buffer when the transmission of the target data fails, and the target data is retransmitted to the base station. The buffer may be an HARQ buffer (Hybrid Automatic Repeat request buffer ). Accordingly, the ue may store the target data in the HARQ buffer in the form of MAC PDU (Media Access Control Packet Data Unit, medium access control layer protocol data unit). Wherein, the user equipment can store the target data in the buffer area when transmitting the target data to the base station; the target data may also be stored in the buffer after transmission to the base station; the target data may also be stored in the buffer before being transmitted to the base station, and in the embodiment of the present application, the time for storing the target data is not specifically limited.
In the embodiment of the application, when the target data transmission fails, the user equipment can also extract the target data from the buffer area, so that the retransmission of the target data is performed, and the reliability of the target data transmission is improved.
Another point to be described is that, in the embodiment of the present application, if the transmission of the target data fails, the ue may automatically select the D-PUR to retransmit the target data; thus, step 201 may be a process in which the ue first transmits the target data to the base station, or may be a process in which the ue retransmits the target data to the base station.
Step 202: the user equipment determines the transmission result of the target data, wherein the transmission result is transmission success or transmission failure.
After the user equipment transmits the target data to the base station, the base station returns a control message or does not return any message to the user equipment according to the receiving result of the target data. Therefore, the user equipment can determine the transmission result of the target data according to the feedback information of the base station within the preset time period.
In the first implementation manner, if the user equipment does not receive the feedback information returned by the base station, the target data transmission at the time is considered to be failed; accordingly, the steps may be: if the user equipment does not receive the feedback information returned by the base station within the preset time after transmitting the target data to the base station, the user equipment determines that the target data transmission fails.
The control of the preset duration can be realized through a timer, and when the user equipment transmits target data to the base station, the timer is started, and the timing duration of the timer is the preset duration. If the timer is overtime and the user equipment does not receive the feedback information of the base station, the user equipment determines that the target data transmission fails; if the timer is not overtime, the user equipment receives the feedback information of the base station, and the user equipment can determine that the transmission result of the target data is successful or failed according to the feedback information of the base station. When the target data transmission is successful or fails, the timer is stopped.
In the embodiment of the application, the user equipment determines whether the transmission of the target data fails according to the feedback information of the base station within the preset time length, so that the method is simpler.
In a second implementation manner, if the user equipment receives feedback information returned by the base station, determining a transmission result of the target data according to the feedback information. Accordingly, the steps may be: if the control message which is returned by the base station and used for indicating the failure of the transmission of the target data is received in the preset time after the user equipment transmits the target data to the base station, the user equipment determines that the transmission of the target data fails.
In one possible implementation manner, the control message includes an RRC message, and the user equipment may determine a transmission result of the target data according to the RRC message. For example, the RRC message may be an RRCEarlyDataComplete message in the control plane scheme, which indicates that the target data transmission is successful. The RRC message may also be an RRCConnectionRelease message in the user plane scheme, which indicates that the target data transmission is successful. The RRC message may also be an RRCConnectionReject message, which is used to indicate that the target data transmission failed.
The base station can send a control message to the user through a PDCCH (Physical Downlink Control Channel ); the user equipment monitors PDCCH scheduling, and the PDCCH can schedule PDSCH (Physical Downlink Shared Channel ), and determines a transmission result of target data according to RRC message included in the PDSCH. Accordingly, if the control message returned by the base station and used for indicating the failure of the transmission of the target data is received in the preset time period after the user equipment transmits the target data to the base station, the step of determining that the transmission of the target data fails by the user equipment may be: and if the PDSCH message of the physical downlink shared channel sent by the base station through the PDCCH is received in a preset time period after the user equipment transmits the target data to the base station, and the PDSCH message comprises the RRC message for indicating the failure of the transmission of the target data, determining that the transmission of the target data fails.
In the embodiment of the application, the user equipment can determine that the target data is successfully transmitted or fails to be transmitted through the control message sent by the base station, so that the target data is retransmitted or stopped according to the transmission result of the target data, and the efficiency and the reliability of the data transmission are improved.
In another possible implementation manner, the base station may retransmit the target data to the base station through uplink retransmission scheduled by the PDCCH. The user equipment monitors PDCCH scheduling, the PDCCH can schedule uplink retransmission, and the user equipment can retransmit target data to the base station through dynamic resources indicated by the PDCCH. The step of retransmitting the target data to the base station by the user equipment according to the uplink retransmission control message may be: if the user equipment receives a PDCCH message sent by the base station within a preset time period after transmitting target data to the base station, the PDCCH message comprises an Uplink retransmission control message for indicating failure of the transmission of the target data, and the Uplink retransmission control message comprises a resource identifier of an Uplink grant (UL grant); and retransmitting the target data to the base station through the UL grant resources corresponding to the UL grant resource identifications.
In the embodiment of the application, the user equipment can acquire the dynamic resource configured by the base station for the user equipment according to the uplink retransmission control message sent by the base station, and retransmit the target data to the base station, thereby improving the reliability of data transmission.
It should be noted that, if the ue determines that the transmission result of the target data is successful, the ue does not execute step 203 and step 204 any more; if the ue determines that the transmission result of the target data is transmission failure, the ue performs steps 203 and 204.
Step 203: if the target data transmission fails, the user equipment acquires a second D-PUR.
If the target data transmission fails, the user equipment can acquire a second D-PUR by itself, and the target data is retransmitted to the base station through the second D-PUR. When the user equipment acquires the second D-PUR, the following two cases are mainly included:
first: currently, there are still available D-PURs among the D-PURs configured by the base station for the user equipment.
Correspondingly, the step of the user equipment obtaining the second D-PUR may be: if there is an available D-PUR from among the plurality of D-PURs to which the first D-PUR belongs, the user equipment selects an available second D-PUR from among the plurality of D-PURs.
In the embodiment of the application, if the target data transmission fails, the user equipment can acquire the available D-PUR by itself and retransmit the target data to the base station, and the base station is not required to allocate dynamic resources to the user equipment, so that the existing resources can be effectively utilized, the data loss is reduced, and the reliability of the data transmission is improved.
Wherein there may be a plurality of available D-PURs, the user equipment may select one available second D-PUR from the plurality of available D-PURs. The user equipment may randomly select an available second D-PUR from a plurality of available D-PURs, or may select a most recently available D-PUR. Accordingly, the step of the user equipment selecting an available second D-PUR from the plurality of D-PURs may be: the user equipment selects a second D-PUR from the plurality of D-PURs that is closest to the first D-PUR and that is not in use.
In the embodiment of the application, the user equipment selects the most recently available D-PUR from the plurality of D-PURs, can quickly acquire the D-PUR, retransmits target data to the base station, and improves the data transmission efficiency.
The user equipment may also select an available D-PUR based on the TB size of the D-PUR and the data amount of the target data. Correspondingly, the step of the user equipment selecting the available second D-PUR from the plurality of D-PURs may be: the user equipment selects a second D-PUR which is matched with the data volume of the target data and is unused from the plurality of D-PURs according to the data volume of the target data. For example, the user equipment may select a second D-PUR having a TB size slightly larger than the data amount of the target data and not used from among the plurality of D-PURs according to the TB size of the D-PUR, i.e., the maximum data amount that the D-PUR can transmit, and the data amount of the target data.
In the embodiment of the application, the user equipment selects the D-PUR matched with the data volume of the target data according to the data volume of the target data, so that the complete transmission of the target data through the D-PUR can be ensured, the reliability of data transmission is improved, resources can be reasonably utilized, and the resource waste is reduced.
Second,: currently, there is no available D-PUR from among the D-PURs configured by the base station for the user equipment.
If there is no available D-PUR in the D-PUR configured by the current base station for the user equipment, the user equipment can receive the D-PUR reassigned by the base station for the user equipment, and select the available D-PUR from the D-PURs reassigned by the base station for the user equipment. Correspondingly, the step of the user equipment obtaining the second D-PUR may further be: if there is no available D-PUR in the plurality of D-PURs to which the first D-PUR belongs, the user equipment receives the D-PUR reassigned by the base station; and selecting an available second D-PUR from the D-PURs reassigned by the base station.
If there is no available D-PUR in the plurality of D-PURs to which the first D-PUR belongs, the user equipment may send a configuration request to the base station for requesting the base station to reconfigure the available D-PUR; the base station responds to the configuration request of the user equipment and reallocates at least one available D-PUR for the user equipment; the user equipment receives the at least one D-PUR reassigned by the base station and selects an available second D-PUR from the at least one D-PUR reassigned by the base station. Wherein the user equipment may randomly select an available second D-PUR from the at least one D-PUR reassigned by the base station; the user equipment may also select a second D-PUR closest to the last D-PUR used from the at least one D-PUR reassigned by the base station; the user equipment may also select a second D-PUR matching the data amount of the target data from the at least one D-PUR reassigned by the base station.
In the embodiment of the application, if the D-PUR is not available, the user equipment can also select the D-PUR reconfigured by the base station for the user equipment, and the target data is continuously retransmitted to the base station, so that the data loss is reduced, and the reliability of data transmission is improved.
Step 204, the user equipment retransmits the target data to the base station through the second D-PUR.
The buffer area stores target data, and the steps can be as follows: the user equipment extracts the target data with failed transmission from the buffer zone and retransmits the target data to the base station through the second D-PUR. The buffer may be an HARQ buffer. The step of retransmitting the target data to the base station by the user equipment through the second D-PUR is similar to step 201, and will not be described here again.
It should be noted that, if the retransmission of the target data is successful, the ue may transmit the next target data to the base station; if the retransmission of the target data fails, the user equipment can also acquire a third D-PUR, and retransmit the target data to the base station through the third D-PUR until the transmission of the target data is successful; or the transmission times of the target data reach the preset times. The step that the user equipment determines whether the target data is successfully retransmitted is similar to the step that the user equipment determines whether the target data is successfully transmitted; the step of obtaining the third D-PUR by the user equipment is similar to the step of obtaining the second D-PUR by the user equipment, and will not be described in detail herein.
The other point to be described is that the ue may delete the target data in the buffer in time; the user deleting the target data in the buffer area actually comprises the following three types:
first: and when the target data transmission is successful, the user equipment deletes the target data in the buffer area.
When the target data transmission is successful, the user equipment does not need to continuously buffer the target data, so that the target data in the buffer zone can be deleted, thereby releasing the storage space of the buffer zone and facilitating the storage of other data which are not successfully transmitted.
Second,: when there is no available D-PUR among the plurality of D-PURs, the user equipment deletes the target data in the buffer.
If the base station does not have available D-PUR among the plurality of D-PURs currently configured for the user equipment, the target data cannot be retransmitted to the base station through the D-PUR, the user equipment may delete the target data in the buffer.
It should be noted that, when there is no available D-PUR in the plurality of D-PURs, the ue may not delete the target data in the buffer first, receive the D-PUR reconfigured by the base station for the ue, and transmit the target data to the base station through the reconfigured D-PUR, until the target data is successfully transmitted, and delete the target data in the buffer.
In the embodiment of the application, when the D-PUR is not available, the user equipment can delete the target data in the buffer zone, and does not retransmit the target data to the base station, so that the continuous occupation of the target data with transmission failure to the resources is reduced, and the resource waste is reduced. The user equipment can also receive the D-PUR reconfigured by the base station for the user equipment, and then retransmit the target data to the base station through the reconfigured D-PUR, so that the data loss is reduced, and the reliability of data transmission is improved.
Third,: and when the retransmission times of the target data reach the preset times, the user equipment deletes the target data in the buffer zone.
The ue may also control the number of retransmissions of the target data, and when the number of retransmissions of the target data reaches a preset number of retransmissions, the ue does not retransmit the target data to the base station, and deletes the target data in the buffer. The preset times can be a set reasonable value, for example, the preset times are reasonable values of 5, 10 and the like; the preset number of times may also be set according to the time delay and the timeout time of the timer, which is not particularly limited herein.
In the embodiment of the application, when the retransmission times of the target data reach the preset times, the target data in the buffer area are deleted, and the target data are not retransmitted to the base station, so that the continuous occupation of the transmission failure target data on resources can be reduced, and the data transmission efficiency is improved.
In the embodiment of the application, user equipment transmits target data to a base station through a first D-PUR; and if the target data transmission fails, retransmitting the target data to the base station through the second D-PUR. Therefore, if the target data transmission fails, the user equipment can retransmit the target data to the base station through the second D-PUR by itself, so that the data loss is reduced, and the reliability of the data transmission is improved.
Fig. 5 is a schematic structural diagram of a data transmission apparatus according to an exemplary embodiment, which is applied to a user equipment, and includes:
a transmission module 501, configured to transmit target data to a base station through a first dedicated pre-configured uplink resource D-PUR; and if the target data transmission fails, retransmitting the target data to the base station through the second D-PUR.
In one possible implementation, the apparatus further includes: and the selection module is used for selecting an available second D-PUR from the plurality of D-PURs if the available D-PUR exists in the plurality of D-PURs to which the first D-PUR belongs, and the second D-PUR is used for retransmitting the target data to the base station.
In another possible implementation, the selection module is further configured to select a second D-PUR from the plurality of D-PURs that is closest to the first D-PUR and is not in use;
The selection module is also used for selecting a second D-PUR which is matched with the data volume and is unused from the plurality of D-PURs according to the data volume of the target data.
In another possible implementation, the selecting module is further configured to receive a D-PUR reassigned by the base station if there is no D-PUR available in the plurality of D-PURs; and selecting an available second D-PUR from the D-PURs reassigned by the base station.
In another possible implementation, the apparatus further includes:
the determining module is used for determining that the target data transmission fails if feedback information returned by the base station is not received within a preset time period after the target data is transmitted to the base station;
the determining module is further configured to determine that the target data transmission fails if a control message returned by the base station and used for indicating the failure of the target data transmission is received in a preset time period after the target data is transmitted to the base station.
In another possible implementation, the control message comprises a radio resource control, RRC, message.
In another possible implementation manner, the determining module is further configured to determine that the target data transmission fails if a physical downlink shared channel PDSCH message sent by the base station through the physical downlink control channel PDCCH is received within a preset time period after the target data is transmitted to the base station, and the PDSCH message includes an RRC message for indicating that the target data transmission fails.
In another possible implementation, the control message comprises an uplink retransmission control message; the transmission module 501 is further configured to receive, if a PDCCH message sent by a base station is received in a preset time period after transmission of target data to the base station, where the PDCCH message includes an uplink retransmission control message for indicating failure of transmission of the target data, and the uplink retransmission control message includes a resource identifier of an uplink scheduling grant UL grant; and retransmitting the target data to the base station through the UL grant resources corresponding to the UL grant resource identifications.
In another possible implementation, the target data is stored in a buffer, and the apparatus further includes:
the deleting module is used for deleting the target data in the buffer area when the target data is successfully transmitted;
the deleting module is further used for deleting the target data in the buffer area when the available D-PUR does not exist in the plurality of D-PURs;
and the deleting module is also used for deleting the target data in the buffer area when the retransmission times of the target data reach the preset times.
In another possible implementation, the buffer is a hybrid automatic repeat request buffer, HARQ buffer.
In another possible implementation manner, the transmission module 501 is further configured to transmit, when the ue is in an idle state, a suspend state, or an inactive state, the target data to the base station through the first D-PUR.
In the embodiment of the application, user equipment transmits target data to a base station through a first D-PUR; and if the target data transmission fails, retransmitting the target data to the base station through the second D-PUR. Therefore, if the target data transmission fails, the user equipment can retransmit the target data to the base station through the second D-PUR by itself, so that the data loss is reduced, and the reliability of the data transmission is improved.
Fig. 6 is a schematic structural diagram of an apparatus, which may be a user equipment, according to an exemplary embodiment. The apparatus includes: processor 601, receiver 602, transmitter 603, memory 604 and bus 605.
Processor 601 includes one or more processing cores, and processor 601 executes various functional applications and information processing by running software programs and modules.
The receiver 602 and the transmitter 603 may be implemented as one communication component, which may be a communication chip.
The memory 604 is connected to the processor 601 by a bus 605.
The memory 604 may be used for storing at least one instruction that the processor 601 may use to execute to implement the steps performed by the apparatus in the various method embodiments described above.
Further, the memory 604 may be implemented by any type or combination of volatile or nonvolatile storage devices including, but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static Random Access Memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, programmable read-only memory (PROM).
The present application provides a computer readable storage medium having stored therein at least one instruction that is loaded and executed by the processor to implement the data transmission method provided by each of the method embodiments described above.
The application also provides a chip which comprises the programmable logic circuit and/or the program instructions and is used for realizing the data transmission method provided by each method embodiment when the chip runs.
The application also provides a computer program product comprising one or more computer programs for implementing the data transmission method provided by the above-mentioned method embodiments when the computer program is executed by a processor.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program for instructing relevant hardware, where the program may be stored in a computer readable storage medium, and the storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The foregoing description of the preferred embodiments of the application is not intended to limit the application to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the application are intended to be included within the scope of the application.

Claims (19)

1. A data transmission method, applied to a user equipment, the method comprising:
transmitting target data to the base station through a first special pre-configured uplink resource D-PUR;
retransmitting the target data to the base station through a second D-PUR if the target data transmission fails;
before retransmitting the target data to the base station via the second D-PUR, the method further comprises:
if there is a D-PUR available among the plurality of D-PURs to which the first D-PUR belongs, selecting a second D-PUR which is nearest to the first D-PUR and is not used from among the plurality of D-PURs; or selecting a second D-PUR which is matched with the data quantity and is not used from the plurality of D-PURs according to the data quantity of the target data, wherein the second D-PUR is used for retransmitting the target data to the base station;
The method further comprises the steps of:
receiving the reassigned D-PUR of the base station if there is no available D-PUR of the plurality of D-PURs;
and selecting an available second D-PUR from the D-PURs reassigned by the base station.
2. The method according to claim 1, wherein the method further comprises:
if feedback information returned by the base station is not received within a preset time period after the target data is transmitted to the base station, determining that the target data transmission fails; or,
and if the control message returned by the base station and used for indicating the failure of the transmission of the target data is received in a preset time period after the transmission of the target data to the base station, determining that the transmission of the target data fails.
3. The method of claim 2, wherein the control message comprises a radio resource control, RRC, message.
4. The method according to claim 3, wherein determining that the target data transmission fails if a control message returned by the base station for indicating that the target data transmission fails is received within a preset time period after the target data is transmitted to the base station comprises:
And if the Physical Downlink Shared Channel (PDSCH) message sent by the base station through a Physical Downlink Control Channel (PDCCH) is received in a preset time period after the target data is transmitted to the base station, and the RRC message used for indicating the failure of the transmission of the target data is included in the PDSCH message, determining that the transmission of the target data fails.
5. The method of claim 2, wherein the control message comprises an uplink retransmission control message; the method further comprises the steps of:
if the PDCCH message sent by the base station is received in a preset time period after the target data is transmitted to the base station, the PDCCH message comprises an uplink retransmission control message for indicating that the target data is transmitted to fail, and the uplink retransmission control message comprises a resource identifier of an uplink scheduling grant (UL grant);
and retransmitting the target data to the base station through the UL grant resources corresponding to the UL grant resource identifications.
6. The method of claim 1, wherein the target data is stored in a buffer, the method further comprising:
deleting the target data in the buffer area when the target data is successfully transmitted; or,
Deleting the target data in the buffer when there is no available D-PUR of the plurality of D-PURs; or,
and deleting the target data in the buffer area when the retransmission times of the target data reach the preset times.
7. The method of claim 6 wherein the buffer is a hybrid automatic repeat request buffer, HARQ buffer.
8. The method of claim 1, wherein the transmitting the target data to the base station via the first dedicated pre-configured uplink resource D-PUR comprises:
and when the user equipment is in an idle state, a suspended state or an inactive state, transmitting target data to a base station through the first D-PUR.
9. A data transmission apparatus for use with a user device, the apparatus comprising:
the transmission module is used for transmitting target data to the base station through the first special pre-configured uplink resource D-PUR; retransmitting the target data to the base station through a second D-PUR if the target data transmission fails;
the apparatus further comprises:
a selecting module, configured to select an available second D-PUR from among a plurality of D-PURs to which the first D-PUR belongs, if there is an available D-PUR among the plurality of D-PURs, where the second D-PUR is used to retransmit the target data to the base station;
The selecting module is further configured to select a second D-PUR that is closest to the first D-PUR and is not used from the plurality of D-PURs;
the selecting module is further used for selecting a second D-PUR which is matched with the data quantity and is unused from the plurality of D-PURs according to the data quantity of the target data;
the selecting module is further configured to receive a D-PUR reassigned by the base station if there is no available D-PUR in the plurality of D-PURs; and selecting an available second D-PUR from the D-PURs reassigned by the base station.
10. The apparatus of claim 9, wherein the apparatus further comprises:
the determining module is used for determining that the target data transmission fails if feedback information returned by the base station is not received within a preset time period after the target data is transmitted to the base station;
and the determining module is further configured to determine that the target data transmission fails if a control message returned by the base station and used for indicating the target data transmission failure is received in a preset time period after the target data is transmitted to the base station.
11. The apparatus of claim 10, wherein the control message comprises a radio resource control, RRC, message.
12. The apparatus of claim 11, wherein the determining module is further configured to determine that the target data transmission failed if a physical downlink shared channel PDSCH message sent by the base station through a physical downlink control channel PDCCH is received within a preset duration after the target data transmission to the base station, and the PDSCH message includes the RRC message indicating that the target data transmission failed.
13. The apparatus of claim 10, wherein the control message comprises an uplink retransmission control message; the transmission module is further configured to receive, if a PDCCH message sent by the base station is received in a preset time period after the target data is transmitted to the base station, where the PDCCH message includes an uplink retransmission control message for indicating that the target data is transmitted failure, and the uplink retransmission control message includes a resource identifier of an uplink scheduling grant UL grant; and retransmitting the target data to the base station through the UL grant resources corresponding to the UL grant resource identifications.
14. The apparatus of claim 9, wherein the target data is stored in a buffer, the apparatus further comprising:
The deleting module is used for deleting the target data in the buffer area when the target data is successfully transmitted;
the deleting module is further configured to delete the target data in the buffer when there is no available D-PUR in the plurality of D-PURs;
the deleting module is further configured to delete the target data in the buffer area when the retransmission times of the target data reach a preset number.
15. The apparatus of claim 14, wherein the buffer is a hybrid automatic repeat request buffer, HARQ buffer.
16. The apparatus of claim 9, wherein the transmitting module is further configured to transmit, via the first D-PUR, target data to a base station when the user equipment is in an idle state, a suspended state, or an inactive state.
17. A user equipment comprising a processor and a memory storing at least one instruction to be loaded and executed by the processor to implement the data transmission method of any of claims 1 to 8.
18. A computer readable storage medium having stored therein at least one instruction that is loaded and executed by a processor to implement the data transmission method of any one of claims 1 to 8.
19. A chip comprising programmable logic circuits and/or program instructions for implementing the data transmission method according to any one of claims 1 to 8 when said chip is run.
CN201980095173.7A 2019-09-30 2019-09-30 Data transmission method, device, user equipment and storage medium Active CN113661754B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/109514 WO2021062660A1 (en) 2019-09-30 2019-09-30 Data transmission method and device, user equipment and storage medium

Publications (2)

Publication Number Publication Date
CN113661754A CN113661754A (en) 2021-11-16
CN113661754B true CN113661754B (en) 2023-09-12

Family

ID=75337622

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201980095173.7A Active CN113661754B (en) 2019-09-30 2019-09-30 Data transmission method, device, user equipment and storage medium

Country Status (2)

Country Link
CN (1) CN113661754B (en)
WO (1) WO2021062660A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116056052B (en) * 2022-08-17 2023-10-31 荣耀终端有限公司 Message processing method, device, electronic equipment and storage medium

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108809580A (en) * 2017-05-05 2018-11-13 北京三星通信技术研究有限公司 Transmit method, user equipment and the base station of uplink signal

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018080561A1 (en) * 2016-10-25 2018-05-03 Intel Corporation Buffer status reporting in 5g nr-things sidelink communications
CN109392062B (en) * 2017-08-11 2020-10-09 华为技术有限公司 Communication method, access network equipment and terminal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108809580A (en) * 2017-05-05 2018-11-13 北京三星通信技术研究有限公司 Transmit method, user equipment and the base station of uplink signal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"LTE下行控制信道检测算法的研究";陈婷婷;《北京邮电大学硕士论文》;全文 *

Also Published As

Publication number Publication date
WO2021062660A1 (en) 2021-04-08
CN113661754A (en) 2021-11-16

Similar Documents

Publication Publication Date Title
US20210168814A1 (en) Method and apparatus for resource configuration for sidelink in internet of vehicles
CN102685913B (en) Method for improving uplink transmission in a wireless communication system
US20240276511A1 (en) Information processing method, device and equipment
CN102123399B (en) Scheduling request method and device
CN101385381B (en) Initial connection establishment in a wireless communication system
CN101686490A (en) Method and related device of scheduling request behavior in a wireless communication system
CN107769898A (en) The user equipment (ue) device and its operating method operated in a wireless communication system
CN104247543A (en) Processing-time dependent control of data block transmission
CN113891423A (en) Method and device for transmitting response message
CN103796320A (en) Schedule requesting method and device
CN105991224A (en) Method and device for uplink data transmission control
CN108696340B (en) Method and device for sending and receiving feedback information
CN113661754B (en) Data transmission method, device, user equipment and storage medium
WO2019179105A1 (en) Radio communication method, user equipment, and network device
CN111527786B (en) Resource scheduling method, device, access network equipment, terminal and storage medium
WO2021159272A1 (en) Communication method, apparatus, device, and readable storage medium
EP2719111A1 (en) Acknowledgement mechanism
CN116210346A (en) Method, device, equipment and medium for starting discontinuous reception retransmission timer
CN116326120A (en) Communication method and device
JP2023536002A (en) Method and apparatus for data transmission
CN103974390B (en) Starting method, user equipment, base station and the system of DRX mode
WO2016074201A1 (en) Buffer status report (bsr) reporting method and device in random access process
KR100600821B1 (en) Apparatus and method for access control in wireless packet switched cellular Orthogonal Frequency Division Multiple Access system
WO2023065316A1 (en) Small data transmission method and apparatus based on preconfigured resource, device, and medium
CN108616911B (en) Uplink data transmission method, device and system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant