CN110650548B

CN110650548B - Method and equipment for multi-cell data transmission

Info

Publication number: CN110650548B
Application number: CN201910894612.2A
Authority: CN
Inventors: 徐敏; 刘星; 韩立锋
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2021-11-23
Anticipated expiration: 2039-09-20
Also published as: WO2021052101A1; CN110650548A

Abstract

The embodiment of the invention provides a method and equipment for multi-cell data transmission, wherein when UE is in a non-connection state, transmission configuration information is obtained, the transmission configuration information comprises cell information corresponding to at least two candidate cells, when the UE has data to be sent, at least two target cells are selected from the candidate cells according to the transmission configuration information, and the data are respectively sent on uplink resources of the selected at least two target cells. That is, in the embodiment of the present invention, when the UE is in the non-connected state and has data to send, at least two cells are selected to send respectively according to the acquired transmission configuration information, so as to improve the possibility that the network device receives the data, thereby ensuring the reliability of the data transmitted by the UE.

Description

Method and equipment for multi-cell data transmission

Technical Field

The embodiment of the invention relates to the technical field of mobile communication, in particular to a method and equipment for multi-cell data transmission.

Background

With the rapid development of wireless communication technology, a fifth Generation mobile communication technology (5th Generation, abbreviated as 5G) has appeared. In a 5G New air interface (NR) system, a User Equipment (UE) has three states: IDLE (IDLE), INACTIVE (INACTIVE) and CONNECTED (CONNECTED).

In an idle state, the UE is not connected with the network equipment, and the UE only needs to initiate location updating, cell selection and reselection processes, receive paging and the like periodically; in the connected state, the UE is connected with the network equipment, and the network equipment can carry out uplink and downlink data scheduling on the UE; in an inactive state, the UE moves within a certain Radio Access Network (RAN) notification area (RNA) range without notifying the network device, the UE retains a certain configuration, and if the UE has data to send, the UE needs to migrate to a connected state, and recover the retained configuration for data transmission.

During the process of migrating the UE from the idle state or the inactive state to the connected state, the UE may perform data transmission, for example, the UE carries data in the third message Msg3 in the random access process, or the UE performs data transmission using a resource pre-configured by the network device. However, it is difficult for the current data transmission method to ensure the reliability of data transmitted by the UE.

Disclosure of Invention

The embodiment of the invention provides a method and equipment for multi-cell data transmission, which aim to solve the technical problem that the reliability of data transmitted by UE is difficult to guarantee by the existing data transmission mode when the UE is in a non-connection state at present.

In a first aspect, an embodiment of the present invention provides a method for multi-cell data transmission, where the method is applied to a UE, and the UE is in a non-connected state, where the method includes:

acquiring transmission configuration information, wherein the transmission configuration information comprises cell information corresponding to at least two candidate cells, the candidate cells are used for UE (user equipment) to perform data transmission in a non-connection state, and the non-connection state comprises an idle state or an inactive state;

when the UE has data to be sent, selecting at least two target cells from the alternative cells according to the transmission configuration information;

and respectively transmitting data on the uplink resources of the at least two target cells.

In one possible design, the obtaining transmission configuration information includes:

and acquiring the transmission configuration information from the information pre-configured by the UE, or acquiring the transmission configuration information from a data transmission protocol.

and acquiring the transmission configuration information from the network equipment.

In one possible design, the obtaining the transmission configuration information from the network device includes:

receiving a Radio Resource Control (RRC) release message from the network device, where the RRC release message includes the transmission configuration information.

In one possible design, the obtaining transmission configuration information from the network device includes:

receiving a System Information Block (SIB) from the network device, where the SIB includes the transmission configuration Information.

In one possible design, the transmission configuration information includes a multi-cell data transmission condition, and the multi-cell data transmission condition includes at least one of the following information: a data volume threshold, data service type information, an indication allowing multi-cell data transmission, and a data reliability threshold;

before the selecting at least two target cells from the candidate cells according to the transmission configuration information, the method further includes:

determining whether data to be transmitted by the UE satisfies the multi-cell data transmission condition;

and if the data to be sent by the UE meets the multi-cell data transmission condition, continuing to execute the step of selecting at least two target cells from the alternative cells according to the transmission configuration information.

In one possible design, the transmission configuration information includes a signal quality threshold for selecting the target cell and/or a maximum number of cells for multi-cell transmission;

the selecting at least two target cells from the candidate cells according to the transmission configuration information includes:

selecting at least two candidate cells as the target cell according to the measured cell signal quality of each candidate cell, or selecting a cell where the UE currently resides and at least one candidate cell as the target cell; wherein the cell signal quality of the target cell satisfies the signal quality threshold, and/or the number of the target cells is less than or equal to the maximum number of the multi-cell transmission cells.

In one possible design, the transmission configuration information includes at least two Radio Link Control (RLC) associated groups or target cell indication information, where each RLC associated group includes at least one candidate cell;

the selecting at least two target cells according to the transmission configuration information includes:

selecting one candidate cell from each RLC associated group as the target cell;

or, the candidate cell indicated in the target cell indication information is taken as the target cell.

In a possible design, the transmitting configuration information further includes uplink resources of each candidate cell, and the sending data on the uplink resources of the at least two target cells respectively includes:

sending a leader sequence and data on uplink resources of each target cell;

or when the Timing Advance (TA for short) of the UE is valid or the UE does not need the TA, respectively sending data on the uplink resources of each target cell;

or, when all target cells belong to the same TA group, respectively sending data on uplink resources of each target cell, and sending a preamble sequence on uplink resources of a first target cell of the at least two target cells, where the first target cell is any one of the following cells: the target cell where the UE currently resides, a target cell with a strongest signal among the at least two target cells, an original primary cell, a cell designated by the network device, and any one of the at least two target cells.

In one possible design, before the sending data on the uplink resources of the at least two target cells, respectively, the method includes:

and reading the system message of the target cell and acquiring the uplink resource of the target cell.

In one possible design, the separately transmitting data on the uplink resources of the at least two target cells includes:

and respectively sending the same data on the uplink resources of the at least two target cells, or respectively sending different data on the uplink resources of the at least two target cells.

In a second aspect, an embodiment of the present invention provides a method for multi-cell data transmission, which is applied to a network device, and the method includes:

sending transmission configuration information to UE, wherein the transmission configuration information comprises cell information corresponding to at least two candidate cells, the candidate cells are used for data transmission of the UE in a non-connection state, and the non-connection state comprises an idle state or an inactive state;

and receiving data sent by the UE on uplink resources of at least two target cells in a non-connected state, wherein the at least two target cells are determined by the UE from the at least two candidate cells according to the transmission configuration information.

In one possible design, the sending transmission configuration information to the UE includes:

and sending an RRC release message to the UE, wherein the RRC release message comprises the transmission configuration information.

and sending SIB to UE, wherein the SIB comprises the transmission configuration information.

In one possible design, the transmission configuration information includes:

a multi-cell data transmission condition, the multi-cell data transmission condition comprising at least one of the following information: a data transmission amount threshold, data traffic type information, an indication to allow multi-cell data transmission, and a data reliability threshold.

In one possible design, the transmission configuration information includes:

selecting a signal quality threshold of the target cell and/or a maximum number of cells for multi-cell transmission.

In one possible design, the transmission configuration information includes:

at least two RLC associated groups or target cell indication information, wherein each RLC associated group at least comprises one candidate cell, and the target cell indication information is used for indicating the target cell.

In a possible design, the transmission configuration information further includes uplink resources corresponding to the candidate cells;

the receiving data sent by the UE through uplink resources of at least two target cells in a non-connected state includes:

receiving a leader sequence and data sent by the UE through uplink resources of each target cell in a non-connection state;

or receiving data sent by the UE in a non-connected state through uplink resources of each target cell, where a TA of the UE is valid, or the UE does not need a TA;

or, receiving data sent by the UE through uplink resources of each target cell in the non-connected state, and receiving a preamble sequence sent by the UE through uplink resources of a first target cell of the at least two target cells in the non-connected state, where the at least two target cells all belong to the same TA group, and the first target cell is any one of the following cells: the target cell where the UE currently resides, a target cell with a strongest signal among the at least two target cells, an original primary cell, a cell designated by the network device, and any one of the at least two target cells.

In one possible design, the receiving data sent by the UE in a non-connected state on uplink resources of at least two target cells includes:

receiving the same data sent by the UE through uplink resources of each target cell in a non-connected state; or receiving different data sent by the UE on uplink resources of each target cell in a non-connected state.

In a third aspect, an embodiment of the present invention provides an apparatus for multi-cell data transmission, where the apparatus is applied to a UE, and the UE is in a non-connected state, and the apparatus includes:

an obtaining module, configured to obtain transmission configuration information, where the transmission configuration information includes cell information corresponding to at least two candidate cells, and the candidate cells are used for UE to perform data transmission in a non-connected state, where the non-connected state includes an idle state or an inactive state;

a selecting module, configured to select at least two target cells from the candidate cells according to the transmission configuration information when the UE has data to send;

and the transmission module is used for respectively transmitting data on the uplink resources of the at least two target cells.

In a fourth aspect, an embodiment of the present invention provides an apparatus for multi-cell data transmission, where the apparatus is applied to a network device, and the apparatus includes:

a sending module, configured to send transmission configuration information to a UE, where the transmission configuration information includes cell information corresponding to at least two candidate cells, and the candidate cells are used for the UE to perform data transmission in a non-connected state, where the non-connected state includes an idle state or an inactive state;

a receiving module, configured to receive data sent by the UE in a non-connected state through uplink resources of at least two target cells, where the at least two target cells are determined by the UE from the at least two candidate cells according to the transmission configuration information.

In a fifth aspect, an embodiment of the present invention provides a user equipment, including: at least one processor and memory;

the memory stores computer-executable instructions;

the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of multi-cell data transmission as provided by the first aspect.

In a sixth aspect, an embodiment of the present invention provides a network device, including: at least one processor and memory;

the memory stores computer-executable instructions;

the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of multi-cell data transmission as provided by the second aspect.

In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, where the computer-readable storage medium stores computer-executable instructions, and when a processor executes the computer-executable instructions, the method for multi-cell data transmission according to the first aspect is implemented.

In an eighth aspect, the embodiment of the present invention provides a computer-readable storage medium, where the computer-readable storage medium stores computer-executable instructions, and when a processor executes the computer-executable instructions, the method for multi-cell data transmission according to the second aspect is implemented.

The method and the device for multi-cell data transmission provided by the embodiments of the present invention obtain transmission configuration information when the UE is in a non-connected state, where the transmission configuration information includes cell information corresponding to at least two candidate cells, and when the UE has data to send, select at least two target cells from the candidate cells according to the transmission configuration information, and send the data on uplink resources of the selected at least two target cells, respectively. That is, in the embodiment of the present invention, when the UE is in the non-connected state and has data to send, at least two cells are selected to send respectively according to the acquired transmission configuration information, so as to improve the possibility that the network device receives the data, thereby ensuring the reliability of the data transmitted by the UE.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a system for multi-cell data transmission according to an embodiment of the present invention;

fig. 2 is a first signaling diagram illustrating state transition in a multi-cell data transmission method according to an embodiment of the present invention;

fig. 3 is a signaling diagram illustrating a state transition in a multi-cell data transmission method according to an embodiment of the present invention;

fig. 4 is a first flowchart illustrating a method for multi-cell data transmission according to an embodiment of the present invention;

fig. 5 is a second flowchart illustrating a method for multi-cell data transmission according to an embodiment of the present invention;

fig. 6 is a first schematic block diagram of an apparatus for multi-cell data transmission according to an embodiment of the present invention;

fig. 7 is a second block diagram of an apparatus for multi-cell data transmission according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a hardware structure of an apparatus according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a system for multi-cell data transmission according to an embodiment of the present invention. The system for multi-cell data transmission provided by the embodiment comprises a UE101 and a network device 102.

UE101 may refer to various forms of user equipment, access terminal, subscriber unit, subscriber station, Mobile Station (MS), remote station, remote terminal, mobile device, terminal device, wireless communication device, user agent, or user equipment. The UE may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device or other processing devices connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network, or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment of the application as long as the UE101 can wirelessly communicate with the Network device 102.

In the embodiment of the application, a unidirectional communication link from an access network to UE is defined as a downlink, data transmitted on the downlink is downlink data, and the transmission direction of the downlink data is called as a downlink direction; the unidirectional communication link from the UE to the access network is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is referred to as an uplink direction.

The network device 102, i.e. a public mobile communication network device, is an interface device for the UE101 to access the internet, and is also a form of a radio station, and refers to a radio transceiver station for performing information transmission with the UE101 in a certain radio coverage area, and includes a Base Station (BS), which may also be referred to as a base station device, and is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, a device providing base station functionality in a 2G network includes a Base Transceiver Station (BTS), a device providing base station functionality in a 3G network includes a node b (nodeb), apparatuses for providing a base station function in a 4G network include evolved node bs (enbs), which, in a Wireless Local Area Network (WLAN), the devices providing the base station function are an Access Point (AP), a device providing the base station function in the 5G NR, a gNB, and a node B continuing evolution (ng-eNB), the gNB and the UE communicate with each other by adopting an NR (noise reduction) technology, the ng-eNB and the UE communicate with each other by adopting an Evolved Universal Terrestrial Radio Access (E-UTRA) technology, and both the gNB and the ng-eNB can be connected to a 5G core network. The base station in the embodiment of the present application also includes a device and the like that provide a function of the base station in a future new communication system.

In the embodiment of the present invention, the UE101 is communicatively connected to the network device 102 through a wireless communication network, and the method for multi-cell data transmission in the embodiment of the present invention may be executed by the UE101, or by the network device 102, or by both the UE101 and the network device 102. For example, in some embodiments, the network device 102 sends notification information to the UE 101; upon receiving the notification information, the UE101 executes the corresponding task item based on the notification information. The following examples are given for illustrative purposes.

In this embodiment of the present invention, when the UE is in the unconnected state, if data transmission needs to be initiated, a random access process needs to be migrated to the connected (connected) state, specifically referring to fig. 2, where fig. 2 is a first signaling diagram illustrating a state migration performed in the method for multi-cell data transmission provided in this embodiment of the present invention, in this embodiment, a process of migrating the UE from the unconnected state to the connected state includes:

the first step is as follows: the UE selects an SSB or CSI-RS from a cell primary and secondary Synchronization Signal (SS)/Physical Broadcast Channel (PBCH) resource block (also abbreviated as SSB) or a Channel State Information Reference Signal (CSI-RS) that satisfies a condition, then selects a preamble, and sends a random access preamble on a time-frequency resource that is allowed to be initiated, i.e., Msg 1: random Access Preamble.

The second step is that: the UE receives a random access response sent by the network equipment, namely Msg 2: random Access Response, which contains TA information.

The third step: the UE sends scheduling transmission information using the grant received in Msg2, namely Msg 3: scheduled Transmission.

The fourth step: if the UE receives the collision resolution message, i.e. Msg 4: and if the scheduling of the base station is not received within a certain time, the conflict Resolution is considered to be failed.

To speed up the random access process, reduce the time delay and reduce the number of messages, a two-step random access process is proposed, specifically referring to fig. 3, fig. 3 is a signaling diagram ii for performing state transition in the multi-cell data transmission method provided in the embodiment of the present invention.

In fig. 3, MsgA includes original Msg1 and Msg3 information, that is, includes a preamble sent on a Physical Random Access Channel (PRACH) and a payload (payload) sent on a Physical Uplink Shared Channel (PUSCH); MsgB contains the Msg2 and Msg4 messages. Or MsgA contains only payload part sent on PUSCH.

In the embodiment of the present invention, in order to send data in a non-connected state, Msg3 or MsgA may carry data in addition to sending RRC message.

Based on the above theory, the embodiment of the present invention provides a method for multi-cell data transmission.

Referring to fig. 4, fig. 4 is a first flowchart illustrating a method for multi-cell data transmission according to an embodiment of the present invention, where an execution main body of the embodiment is a UE in the embodiment shown in fig. 1, and the UE is in a non-connected state. As shown in fig. 4, the method includes:

s401, obtaining transmission configuration information, where the transmission configuration information includes cell information corresponding to at least two candidate cells, where the candidate cells are used for UE to perform data transmission in a non-connected state, and the non-connected state includes an idle state or an inactive state.

In the embodiment of the present invention, when the UE is in the non-connected state, the transmission configuration information may be obtained, where the transmission configuration information includes cell information corresponding to at least two candidate cells. The candidate cell is used for data transmission of the UE in a non-connected state, where the non-connected state includes an IDLE state (RRC _ IDLE) and an INACTIVE state (RRC _ INACTIVE).

The cell information may include cell identifiers, uplink resources, and the like of each candidate cell.

S402, when the UE has data to be sent, selecting at least two target cells from the candidate cells according to the transmission configuration information.

In the embodiment of the invention, when the UE is in a non-connected state and has data to be sent, at least two target cells are selected from the candidate cells according to the transmission configuration information. For example, two cells most suitable for data transmission may be selected as the target cell from all the candidate cells according to the transmission configuration information.

And S403, respectively sending data on the uplink resources of the at least two target cells.

Each target cell may be a cell with different frequency points, if each target cell belongs to the same base station, a Carrier Aggregation (CA) operation is performed, and if each target cell does not belong to the same base station, a Dual-Connectivity (DC) operation is performed.

The CA operation can aggregate a plurality of carriers (Component carriers, CCs), thereby realizing a maximum transmission bandwidth of 100MHz and effectively increasing an uplink transmission rate; DC operation may enable data transmission through multiple base stations.

It can be understood that, the above-mentioned manner of sending the same data on the uplink resources of at least two target cells respectively is a repeated transmission (duplicate) manner. The same data is transmitted through a plurality of paths, so that the reliability of data transmission can be improved, and the transmission delay can be reduced. Or different data are respectively sent on the uplink resources of at least two target cells, so that the transmission efficiency can be improved and the data transmission delay can be reduced.

Further, based on the content described in the foregoing embodiment, in a possible embodiment, the acquiring of the transmission configuration information in step S401 includes:

and acquiring the transmission configuration information from the information pre-configured by the UE or acquiring the transmission configuration information from the data transmission protocol.

That is, in the embodiment of the present invention, the transmission configuration information may be stored in information configured in advance by the UE. Or, the transmission configuration information is written in advance in a data transmission protocol corresponding to the UE.

Further, based on the content described in the foregoing embodiment, in another possible embodiment, the acquiring the transmission configuration information in step S401 includes:

transmission configuration information is obtained from a network device.

Specifically, acquiring the transmission configuration information from the network device may include the following two ways:

the first method is as follows:

and receiving an RRC release message from the network equipment, wherein the RRC release message comprises the transmission configuration information. The network may migrate the UE to a non-connected state using an RRC release message, where the RRC release message may indicate the UE to reserve configuration information such as radio bearers, and configure the transmission configuration information, and the configuration of each UE may be different.

The transmission configuration information may include uplink resources corresponding to each candidate cell (where the UE may use the uplink resources to transmit data), cell identification information of each candidate cell, and one or more of the following information:

the signal quality threshold of the target cell, the cell meeting the signal quality threshold can carry out multi-cell transmission; transmitting a maximum number of cells by the multi-cell; an indication that only one preamble is allowed to be sent; a condition of a cell transmitting a preamble; the base station can judge the uplink transmission resource of the UE through the received preamble and receive the data sent by the UE on the corresponding resource; distributing proportions of power among multiple cells; and at least two RLC association sets, wherein one RLC configuration is associated with one or more cells or frequency points.

That is, in the embodiment of the present invention, the UE may obtain the transmission configuration information through an RRC release message received from the network device.

The second method comprises the following steps:

and receiving the SIB from the network equipment, wherein the SIB comprises the transmission configuration information. The UE in a non-connection state can perform cell selection or reselection based on the cell measurement reselection parameters and reside in a cell, when the cell reselects to a new cell, the SIB needs to be read to obtain the relevant information of the cell, wherein the transmission configuration information is also configured, and at the moment, the obtained information is the same for each UE.

The transmission configuration information configured in the SIB is consistent with the transmission configuration information configured in the RRC release message in the above embodiment, which may be referred to specifically for the above embodiment and is not described herein again.

That is, in the embodiment of the present invention, the UE may acquire the transmission configuration information through an SIB received from the network device.

In addition, in another possible embodiment of the present invention, the UE may receive the RRC release message and the SIB at the same time from the network device, and when the transmission configuration information in the RRC release message and the transmission configuration information in the SIB have a conflict, if the conflict is an uplink resource, the transmission configuration information in the SIB is taken as a criterion.

Further, based on the content described in the foregoing embodiment, in a possible embodiment, the transmission configuration information includes a multi-cell data transmission condition, where the multi-cell data transmission condition includes at least one of the following information: a data volume threshold, data service type information, an indication allowing multi-cell data transmission, and a data reliability threshold;

before selecting at least two target cells from the candidate cells according to the transmission configuration information in step S402, the method further includes:

determining whether data to be sent by the UE meets the multi-cell data transmission condition; if yes, continue to step S402.

The multi-cell data transmission method provided by the embodiment of the invention can be used for packet data transmission, for example, when the data volume of data to be sent by the UE needs to be smaller than the data volume threshold value, multi-cell data transmission is adopted.

The above-mentioned multi-cell data transmission method may also be directed to a specific service type, where the data service type information may include logical channel information or Radio Bearer (RB) information, and the UE compares the data information that needs to be sent to determine whether to adopt multi-cell data transmission. For example, when the logical channel or RB for the data to be transmitted by the UE conforms to the data traffic type information, the multi-cell data transmission is adopted.

The multi-cell data transmission method may also be applied to a service with a high reliability requirement, for example, a service with a high reliability requirement for data to be sent by the UE, for example, a URLLC (Ultra-Reliable Low-Latency Communication) service.

The method for multi-cell data transmission may further be based on the indication allowing multi-cell data transmission, for example, when the multi-cell data transmission condition includes the indication allowing multi-cell data transmission, the UE may use multi-cell data transmission.

Further, based on the description in the above embodiments, in a possible embodiment, the transmission configuration information includes cell information of each candidate cell, a signal quality threshold with the target cell, and/or a maximum number of multi-cell transmission cells.

In the step S402, selecting at least two target cells from the candidate cells according to the transmission configuration information includes:

selecting at least two candidate cells as the target cell according to the measured cell signal quality of each candidate cell, or selecting a cell where the UE currently resides and at least one candidate cell as the target cell; wherein the cell signal quality of the target cell meets the signal quality threshold, and/or the number of the target cells is less than or equal to the maximum number of the multi-cell transmission cells.

In the embodiment of the present invention, each candidate cell may be ranked according to the cell signal quality of each candidate cell, then the number N of target cells is determined (N is greater than or equal to 2), and the first N candidate cells with the best cell signal quality in the ranking result are determined as the target cells.

In addition, according to the candidate cell list, the candidate cell satisfying the signal quality threshold may be selected as the target cell.

In another possible embodiment, the transmission configuration information includes at least two RLC association groups, or target cell indication information, where the RLC association groups include at least one candidate cell.

In the step S402, selecting at least two target cells from the candidate cells according to the transmission configuration information, further includes:

selecting one candidate cell from each RLC associated group as the target cell, wherein the selected target cell does not exceed the maximum number of cells transmitted by the multiple cells; or, the candidate cell indicated in the target cell indication information is taken as the target cell.

That is, in the embodiment of the present invention, the target cell may be a cell in the RLC association group, or may be an alternative cell specified by the network device, where the cell signal quality of the target cell also satisfies the signal quality threshold.

In addition, in this embodiment of the present invention, the target cell may also be a cell configured by the network device, for example, a cell configured to operate in CA or DC in a connected state, and at least two of the cells may be selected as the target cells.

Further, based on the content described in the foregoing embodiment, in a possible embodiment, the transmission configuration information further includes uplink resources of each candidate cell, and the step S403 sends data on the uplink resources of at least two target cells respectively, including:

sending a leader sequence and data on uplink resources of each target cell;

or when the TA of the UE is effective or the UE does not need the TA, respectively sending data on the uplink resources of each target cell;

or, when all target cells belong to the same TA group, respectively sending data on uplink resources of the target cells, and sending a preamble sequence on uplink resources of a first target cell of the at least two target cells. The first target cell is any one of the following cells: the target cell where the UE currently resides, the target cell with the strongest signal among the at least two target cells, the original primary cell, the cell designated by the network device, and any one of the at least two target cells.

The data may be RRC message, UE Identification (ID), service data, and the like.

When all target cells belong to the same TA group, one target cell may be selected from all target cells to send a preamble, and the selected mode of sending the preamble includes: the UE selects a cell where the UE currently resides, selects a cell with the strongest signal in an alternative cell, an original primary cell (Pcell), a cell designated by network equipment and the like based on cell information pre-configured by a network.

The network equipment can determine that the UE carries out multi-cell transmission through a preamble sent by the UE and/or corresponding uplink resources; or it may be determined that the UE is performing multi-cell transmission by indication information added by the UE in the transmitted data.

If the duplicate transmission mode is adopted, after the UE sends data transmission, a timer is started to receive a response message by taking the time point of the last sending completion as the criterion, and if the response of one cell is received, the transmission is considered to be successful.

If the uplink resource of the selected target cell is not included in the transmission configuration information, the system message corresponding to the target cell needs to be read to obtain the relevant uplink resource. Because the uplink resources are configured periodically, if one or more uplink resources exist in a period, the uplink resource of the target cell corresponding to the closest time domain is selected according to the uplink resource of the selected resident cell, or the uplink resource of the cell sending the preamble, or the uplink resource of the selected target cell.

Further, based on the content described in the foregoing embodiment, an embodiment of the present invention further provides a method for multi-cell data transmission, where the method is applied to the network device shown in fig. 1, and referring to fig. 5, fig. 5 is a second flowchart of the method for multi-cell data transmission provided in the embodiment of the present invention, where the method for multi-cell data transmission includes:

s501, transmitting transmission configuration information to the UE, wherein the transmission configuration information comprises cell information corresponding to at least two candidate cells, the candidate cells are used for the UE to perform data transmission in a non-connection state, and the non-connection state comprises an idle state or an inactive state.

S502, receiving data sent by the UE on uplink resources of at least two target cells in a non-connected state, wherein the at least two target cells are determined by the UE from the at least two candidate cells according to the transmission configuration information.

That is, in the embodiment of the present invention, the network device may pre-configure the transmission configuration information and send the transmission configuration information to the UE, and may receive data sent by the UE through uplink resources of at least two target cells in a non-connected state, thereby ensuring reliability of the data sent by the UE.

Further, in a possible embodiment, the sending, in step S501, transmission configuration information to the UE includes:

Further, in a possible embodiment, the transmission configuration information includes:

After receiving the transmission configuration information, when data to be sent by the UE satisfies the multi-cell data transmission condition, the UE may select at least two target cells from the candidate cells according to the transmission configuration information, and then send the data on uplink resources of the selected target cells in a non-connected state.

a signal quality threshold for the target cell and/or a maximum number of cells for multi-cell transmission is selected.

After receiving the transmission configuration information, the UE may select at least two candidate cells as target cells according to the measured cell signal quality of each candidate cell, where the cell signal quality of the target cell satisfies the signal quality threshold, and/or the number of the target cells is less than or equal to the maximum number of the cells transmitted by multiple cells.

at least two RLC association groups or target cell indication information, where the RLC association groups include at least one candidate cell, and the target cell indication information is used to indicate the target cell.

After receiving the transmission configuration information, the UE may select one candidate cell from each RLC association group as the target cell; or, the candidate cell indicated in the target cell indication information is taken as the target cell.

Further, in a possible embodiment, the transmitting configuration information further includes uplink resources of each candidate cell, and the receiving, in step S502, data sent by the UE in a non-connected state through the uplink resources of at least two target cells includes:

and receiving a leader sequence and data sent by the UE through uplink resources of each target cell in a non-connection state.

Or receiving data sent by the UE through uplink resources of each target cell in a non-connected state, wherein the TA of the UE is valid; or the UE does not need a TA.

Or, receiving data sent by the UE through uplink resources of each target cell in the non-connected state, and receiving a preamble sequence sent by the UE through uplink resources of a first target cell of the at least two target cells in the non-connected state, where the at least two target cells all belong to the same TA group, and the first target cell is any one of the following cells: the method comprises the steps of a target cell where the UE currently resides, a target cell with the strongest signal in at least two target cells, an original main cell, a cell designated by network equipment and any one target cell in the at least two target cells.

Further, in a possible embodiment, the receiving, in step S502, data sent by the UE in the non-connected state through uplink resources of at least two target cells includes:

receiving the same data sent by the UE through the uplink resources of each target cell in a non-connected state; or receiving different data sent by the UE on uplink resources of each target cell in a non-connected state.

It should be noted that the network device described in the embodiment corresponding to fig. 5 is consistent with the function implemented by the network device described in the embodiment corresponding to fig. 4, and specific contents may refer to the network device described in the embodiment corresponding to fig. 4, which is not described herein again.

In the method for multi-cell data transmission provided in the embodiment of the present invention, a network device may pre-configure transmission configuration information, where the transmission configuration information includes cell information corresponding to at least two candidate cells, where the candidate cells are used for a UE to perform data transmission in a non-connected state, then send the transmission configuration information to the UE, and receive data sent by the UE in the non-connected state through uplink resources of at least two target cells, where the at least two target cells are determined by the UE from the at least two candidate cells according to the transmission configuration information. That is, in the embodiment of the present invention, when the UE is in the non-connected state and has data to send, at least two cells are selected to send respectively according to the transmission configuration information acquired from the network device, so as to improve the possibility that the network device receives the data, and further ensure the reliability of the data transmitted by the UE.

Further, based on the content described in the foregoing embodiment, an embodiment of the present invention further provides an apparatus for multi-cell data transmission, where the apparatus is applied to the UE shown in fig. 1, and referring to fig. 6, fig. 6 is a first schematic block diagram of the apparatus for multi-cell data transmission provided in the embodiment of the present invention, where the apparatus 60 for multi-cell data transmission includes:

an obtaining module 601, configured to obtain transmission configuration information, where the transmission configuration information includes cell information corresponding to at least two candidate cells, and the candidate cells are used for data transmission of a UE in a non-connected state, where the non-connected state includes an idle state or an inactive state.

A selecting module 602, configured to select at least two target cells from the candidate cells according to the transmission configuration information when the UE has data to send.

A transmission module 603, configured to send data on uplink resources of the at least two target cells, respectively.

In one possible embodiment, the obtaining module 601 is configured to:

In a possible embodiment, the obtaining the transmission configuration information from the network device includes:

receiving an RRC release message from the network device, wherein the RRC release message comprises the transmission configuration information.

and receiving the SIB from the network equipment, wherein the SIB comprises the transmission configuration information.

In a possible embodiment, the transmission configuration information includes a multi-cell data transmission condition, and the multi-cell data transmission condition includes at least one of the following information: a data volume threshold, data service type information, an indication allowing multi-cell data transmission, and a data reliability threshold;

the apparatus 60 for multi-cell data transmission further includes:

a determining module, configured to determine whether data to be sent by the UE satisfies the multi-cell data transmission condition; if the data to be sent by the UE satisfies the multi-cell data transmission condition, the selecting module 602 is continuously executed.

In a possible embodiment, the transmission configuration information includes a signal quality threshold for selecting the target cell, and/or a maximum number of cells for multi-cell transmission;

the selection module 602 is configured to:

In a possible embodiment, the transmission configuration information includes at least two RLC association sets, or target cell indication information, where the RLC association sets include at least one candidate cell.

The selection module 602 is configured to:

and selecting one candidate cell from each RLC associated group as the target cell.

In a feasible embodiment, the transmission configuration information further includes uplink resources of each candidate cell, and the transmission module 603 is configured to:

sending a leader sequence and data on uplink resources of each target cell;

or when the TA of the UE is valid or the UE does not need the TA, respectively sending data on the uplink resources of each target cell;

In a possible embodiment, the apparatus further comprises:

and the reading module is used for reading the system message of the target cell and acquiring the uplink resource of the target cell.

In one possible embodiment, the transmission module 603 is configured to:

The multi-cell data transmission apparatus 60 provided in the embodiment of the present invention is applied to a UE, and when the UE is in a non-connected state, obtains transmission configuration information, where the transmission configuration information includes cell information corresponding to at least two candidate cells, and when the UE has data to send, selects at least two target cells from the candidate cells according to the transmission configuration information, and sends the data on uplink resources of the selected at least two target cells, respectively. That is, in the embodiment of the present invention, when the UE is in the non-connected state and has data to send, at least two cells are selected to send respectively according to the acquired transmission configuration information, so as to improve the possibility that the network device receives the data, thereby ensuring the reliability of the data transmitted by the UE.

Further, based on the content described in the foregoing embodiment, an embodiment of the present invention further provides an apparatus for multi-cell data transmission, where the apparatus is applied to the network device shown in fig. 1, and referring to fig. 7, fig. 7 is a second module schematic diagram of the apparatus for multi-cell data transmission provided in the embodiment of the present invention, where the apparatus 70 for multi-cell data transmission includes:

a sending module 701, configured to send transmission configuration information to a UE, where the transmission configuration information includes cell information corresponding to at least two candidate cells, where the candidate cells are used for data transmission of the UE in a non-connected state, and the non-connected state includes an idle state or an inactive state.

A receiving module 702, configured to receive data sent by the UE in a non-connected state through uplink resources of at least two target cells, where the at least two target cells are determined by the UE from the at least two candidate cells according to the transmission configuration information.

In one possible embodiment, the sending module 701 is configured to:

In a possible embodiment, the transmission configuration information includes:

a multi-cell data transmission condition, the multi-cell data transmission condition including at least one of the following information: a data transmission amount threshold, data traffic type information, an indication to allow multi-cell data transmission, and a data reliability threshold.

In a possible embodiment, the transmission configuration information includes:

at least two RLC association sets or target cell indication information, where the RLC association set includes at least one candidate cell, and the target cell indication information is used to indicate the target cell.

In a feasible embodiment, the transmission configuration information further includes uplink resources corresponding to the candidate cells;

the receiving module 702 is configured to:

The multi-cell data transmission apparatus 70 provided in the embodiment of the present invention is applied to a network device, where the network device may pre-configure transmission configuration information, where the transmission configuration information includes cell information corresponding to at least two candidate cells, where the candidate cells are used for a UE to perform data transmission in a non-connected state, then send the transmission configuration information to the UE, and receive data sent by the UE on uplink resources of at least two target cells in the non-connected state, where the at least two target cells are determined by the UE from the at least two candidate cells according to the transmission configuration information. That is, in the embodiment of the present invention, when the UE is in the non-connected state and has data to send, at least two cells are selected to send respectively according to the transmission configuration information acquired from the network device, so as to improve the possibility that the network device receives the data, and further ensure the reliability of the data transmitted by the UE.

Further, an embodiment of the present invention further provides a user equipment, including: at least one processor and memory; the memory stores computer-executable instructions; the at least one processor executes the memory-stored computer-executable instructions to cause the at least one processor to perform a method of multi-cell data transmission as described in fig. 4.

Further, an embodiment of the present invention further provides a network device, including: at least one processor and memory; the memory stores computer-executable instructions; the at least one processor executes the memory-stored computer-executable instructions to cause the at least one processor to perform a method of multi-cell data transmission as described in fig. 5.

The user equipment and the network equipment provided in the above embodiments may be respectively configured to execute the technical solutions of the above method embodiments, and the implementation principles and technical effects thereof are similar, and this embodiment is not described herein again.

For better understanding of the embodiment of the present invention, referring to fig. 8, fig. 8 is a schematic diagram of a hardware structure of an apparatus according to the embodiment of the present invention. As shown in fig. 8, when the apparatus 80 is the UE shown in fig. 1, the apparatus 80 includes: a processor 801 and a memory 802; wherein:

memory 802 for storing computer-executable instructions.

The processor 801 is configured to execute the computer-executable instructions stored in the memory to implement the steps performed by the UE in the above embodiments. Reference may be made in particular to the description relating to the method embodiments described above.

Alternatively, when the device 80 is a network device shown in fig. 1, the device 80 includes: a processor 801 and a memory 802; wherein:

memory 802 for storing computer-executable instructions.

The processor 801 is configured to execute the computer-executable instructions stored in the memory to implement the steps performed by the network device in the above embodiments. Reference may be made in particular to the description relating to the method embodiments described above.

Alternatively, the memory 802 may be separate or integrated with the processor 801.

When the memory 802 is provided separately, the device 80 further includes a bus 803 for connecting the memory 802 and the processor 801.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer executable instruction is stored in the computer-readable storage medium, and when a processor executes the computer executable instruction, the method for multi-cell data transmission applied to a UE as above is implemented.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer executable instruction is stored in the computer-readable storage medium, and when a processor executes the computer executable instruction, the method for multi-cell data transmission applied to a network device as above is implemented.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

In addition, functional modules in the embodiments of the present invention may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.

The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application.

It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.

The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.

The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.

The storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in an electronic device or host device.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for multi-cell data transmission, applied to a User Equipment (UE), wherein the UE is in a non-connected state, and the method comprises:

respectively sending data on uplink resources of the at least two target cells;

the transmitting configuration information further includes uplink resources of each candidate cell, and the sending data on the uplink resources of the at least two target cells respectively includes:

when all target cells belong to the same TA group, respectively sending data on uplink resources of each target cell, and sending a leader sequence on uplink resources of a first target cell of the at least two target cells, wherein the first target cell is any one of the following cells: the target cell where the UE currently resides, a target cell with a strongest signal among the at least two target cells, an original primary cell, a cell designated by the network device, and any one of the at least two target cells.

2. The method of claim 1, wherein the obtaining the transmission configuration information comprises:

3. The method of claim 1, wherein the obtaining the transmission configuration information comprises:

4. The method of claim 3, wherein the obtaining the transmission configuration information from the network device comprises:

receiving a Radio Resource Control (RRC) release message from the network device, wherein the RRC release message comprises the transmission configuration information.

5. The method of claim 3, wherein obtaining the transmission configuration information from the network device comprises:

receiving a system information block, SIB, from the network device, the SIB including the transmission configuration information.

6. The method according to any of claims 1 to 5, wherein the transmission configuration information comprises a multi-cell data transmission condition, and the multi-cell data transmission condition comprises at least one of the following information: a data volume threshold, data service type information, an indication allowing multi-cell data transmission, and a data reliability threshold;

7. The method according to any of claims 1 to 5, wherein the transmission configuration information comprises a signal quality threshold for selecting the target cell and/or a maximum number of cells for multi-cell transmission;

8. The method according to any of claims 1 to 5, wherein the transmission configuration information includes at least two radio link control layer (RLC) association sets, each of which includes at least one candidate cell, or target cell indication information;

selecting one candidate cell from each RLC associated group as the target cell;

9. The method according to any one of claims 1 to 5, wherein the separately transmitting data on the uplink resources of the at least two target cells comprises:

sending a leader sequence and data on uplink resources of each target cell;

or when the Timing Advance (TA) of the UE is valid or the UE does not need the TA, respectively transmitting data on the uplink resources of each target cell.

10. The method according to any one of claims 1 to 5, wherein before the sending data on the uplink resources of the at least two target cells respectively, the method comprises:

11. The method according to any one of claims 1 to 5, wherein the separately transmitting data on the uplink resources of the at least two target cells comprises:

12. A method for multi-cell data transmission, applied to a network device, the method comprising:

receiving data sent by the UE on uplink resources of at least two target cells in a non-connected state, wherein the at least two target cells are determined by the UE from the at least two candidate cells according to the transmission configuration information;

wherein, the transmission configuration information further includes uplink resources corresponding to the candidate cells;

receiving data sent by the UE through uplink resources of each target cell in a non-connected state, and receiving a preamble sequence sent by the UE through uplink resources of a first target cell of the at least two target cells in the non-connected state, where the at least two target cells all belong to the same TA group, and the first target cell is any one of the following cells: the target cell where the UE currently resides, a target cell with a strongest signal among the at least two target cells, an original primary cell, a cell designated by the network device, and any one of the at least two target cells.

13. The method of claim 12, wherein sending transmission configuration information to the UE comprises:

14. The method of claim 12, wherein sending transmission configuration information to the UE comprises:

15. The method according to any one of claims 12 to 14, wherein the transmission configuration information comprises:

16. The method according to any one of claims 12 to 14, wherein the transmission configuration information comprises:

17. The method according to any one of claims 12 to 14, wherein the transmission configuration information comprises:

18. The method according to any of claims 12 to 14, wherein the receiving data sent by the UE in the non-connected state via uplink resources of at least two target cells comprises:

or receiving data sent by the UE in the non-connected state through uplink resources of each target cell, where a TA of the UE is valid, or the UE does not need a TA.

19. The method according to any of claims 12 to 14, wherein the receiving data sent by the UE in the non-connected state via uplink resources of at least two target cells comprises:

20. An apparatus for multi-cell data transmission, applied to a UE, wherein the UE is in a non-connected state, the apparatus comprising:

a transmission module, configured to send data on uplink resources of the at least two target cells respectively;

the transmission configuration information further includes uplink resources of each candidate cell, and the transmission module is specifically configured to:

21. An apparatus for multi-cell data transmission, applied to a network device, the apparatus comprising:

a receiving module, configured to receive data sent by the UE in a non-connected state through uplink resources of at least two target cells, where the at least two target cells are determined by the UE from the at least two candidate cells according to the transmission configuration information;

the receiving module is specifically configured to:

22. A user device, comprising: at least one processor and memory;

the memory stores computer-executable instructions;

the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of multi-cell data transmission according to any of claims 1 to 11.

23. A network device, comprising: at least one processor and memory;

the memory stores computer-executable instructions;

the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of multi-cell data transmission according to any of claims 12 to 19.

24. A computer-readable storage medium having stored thereon computer-executable instructions which, when executed by a processor, implement a method of multi-cell data transmission according to any one of claims 1 to 11.

25. A computer-readable storage medium having stored thereon computer-executable instructions which, when executed by a processor, implement a method of multi-cell data transmission according to any one of claims 12 to 19.