WO2017161973A1

WO2017161973A1 - Data transmission method, user equipment and base station

Info

Publication number: WO2017161973A1
Application number: PCT/CN2017/073205
Authority: WO
Inventors: 肖芳英; 刘仁茂
Original assignee: 夏普株式会社; 肖芳英
Priority date: 2016-03-22
Filing date: 2017-02-10
Publication date: 2017-09-28
Also published as: CN107222935A

Abstract

Disclosed is a data transmission method executed at a user equipment (UE), comprising: receiving radio resource control (RRC) signalling from a base station, the RRC signalling at least including information about a non-anchor physical resource block (PRB) configured for a UE; and after media access control (MAC) random access is successfully executed on an anchor PRB, switching from the anchor PRB back to the non-anchor PRB so as to send, on the non-anchor PRB, unicast data to the base station and/or receive the unicast data from the base station. Correspondingly, also disclosed are a data transmission method executed at a base station, and a UE and a base station respectively using the method.

Description

Data transmission method, user equipment and base station

Technical field

The present invention relates to the field of wireless communication technologies, and more particularly, to a method for transmitting and/or receiving unicast data on a non-anchor PRB after performing random access successfully on an anchor physical resource block (PRB) and a corresponding user. Equipment and base stations.

Background technique

With the rapid growth of mobile communications and the tremendous advances in technology, the world will move toward a fully interconnected network society where anyone or anything can access information and share data anytime and anywhere. It is estimated that by 2020, the number of connected devices will reach 50 billion, of which only about 10 billion may be mobile phones and tablets, while others are not machines that talk to people, but machines that talk to each other. Therefore, how to design a system to better support the Internet of Everything is a topic that needs in-depth study.

In the 3rd Generation Partnership Project (3GPP) Long Term Evolution Project (LTE) standard, machine-to-machine communication is referred to as Machine Type Communication (MTC). MTC is a data communication service that does not require human involvement. Large-scale deployment of MTC user equipment can be used in security, tracking, billing, measurement, and consumer electronics. Applications include video surveillance, supply chain tracking, smart meters, and remote monitoring. MTC requires lower power consumption, supports lower data transmission rates and lower mobility. The current LTE system is mainly aimed at human-to-human communication services. The key to achieving the scale competitive advantage and application prospect of MTC services lies in the fact that LTE networks support low-cost MTC devices.

In addition, some MTC equipment needs to be installed in the basement of the residential building or protected by insulated foil, metal window or thick wall of traditional buildings, compared to conventional equipment terminals (such as mobile phones, tablets, etc.) in LTE networks. The air interface will obviously suffer from more severe penetration losses. 3GPP decided to study the design and performance evaluation of MTC devices with additional 20dB coverage enhancement. It is worth noting that MTC devices located in poor network coverage areas have the following characteristics: very low data transmission rate, very loose latency requirements and limited Mobility. For the above With the MTC feature, the LTE network can further optimize some signaling and/or channels to better support the MTC service.

To this end, at the 3GPP RAN #64 plenary meeting held in June 2014, a new work item for Rel-13 low complexity and coverage enhanced MTC was proposed (see Non-Patent Document: RP-140990 New Work). Item on Even Lower Complexity and Enhanced Coverage LTE UE for MTC, Ericsson, NSN). In the description of the work item, the LTE Rel-13 system needs to support the uplink and downlink 1.4MHz RF bandwidth of the MTC user equipment to work in any system bandwidth (for example, 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, 20MHz, etc.). The standardization of this work item will be completed by the end of 2015.

In addition, in order to better realize the Internet of Everything, a new work project was proposed at the 3GPP RAN#69 plenary meeting held in September 2015 (see Non-Patent Document: RP-151621 New Work Item: NarrowBand IOT (NB) -IOT)), which can be called a narrowband Internet of Things (NB-IOT). In the description of the project, NB-IOT needs to support 180KHz uplink and downlink RF bandwidth, and supports three operating modes: stand-alone mode, guard-band mode and in-band mode. (in-band). The standalone mode of operation is to implement NB-IOT on the existing GSM band. The guard band mode of operation is to implement NB-IOT on the guard band of an LTE carrier. The in-band mode of operation is to implement NB-IOT on the existing LTE band. Different bearer modes may use different physical parameters and processing mechanisms.

In the existing LTE system, the LTE user equipment UE implements data transmission through a service request procedure. In the service request process, the base station (eNB) first acquires UE context information from the core network (CN) and saves it locally, and then sends a radio resource control (RRC) connection reconfiguration message to the UE to establish a data radio bearer (DRB). Data is transmitted through the DRB. In the NB-IoT system, a UE in an RRC IDLE state only needs to transmit a small amount of data (small data) in one RRC connection. If the existing LTE data transmission process is used for small data transmission, the wireless resource utilization will be reduced. In order to reduce the signaling overhead, the SA2 working group has achieved the following two solutions for small data transmission: (1) control plane data transmission method based on non-access layer (NAS) messages (referred to as CP scheme); in this scheme, The data is encapsulated in a NAS Message Packet Data Unit (NAS PDU) and transmitted to the receiving end via a Signaling Radio Bearer (SRB). (2) User plane data transmission mode (abbreviated as UP scheme) based on the eNB storing the access layer context information; in this scheme, the access layer context information is established in the eNB and the DRB is established, and the data passes through the DRB. Send to the receiving end. At the same time, SA2 is also reached, the CP solution is a solution that must be implemented in the product, and the UP solution is an optional implementation.

The 3GPP RAN1&2 Working Group reached the division of the PRB of the NB IoT into an anchor PRB and a non-anchor PRB. The anchor PRB may be used to transmit data such as a NB-IoT related physical broadcast channel (PBCH), a primary synchronization signal (PSS)/secondary synchronization signal (SSS), a system information block (SIB), or may be used for receiving or transmitting by a user equipment. NB-IoT related physical downlink control channel (PDCCH), physical downlink shared channel (PDSCH), physical uplink shared channel (PUSCH) and other unicast transmission data; non-anchor PRB can only be used for user equipment to receive or transmit NB- Data for unicast transmission such as PDCCH, PDSCH, and PUSCH related to IoT. The base station may configure a non-anchor PRB for the user equipment by using a radio resource control (RRC) connection setup message, an RRC connection reestablishment message, an RRC reconfiguration message, an RRC connection resume message, or the like.

The 3GPP RAN1 Working Group also concluded that the user equipment only performs a random access procedure on the anchor PRB. After the base station configures the non-anchor PRB for the user equipment, during the RRC connection process, the user equipment will work on the non-anchor PRB until a random access needs to be performed or another physical resource block is re-allocated. When the user equipment working on the non-anchor PRB needs to perform random access, the user equipment will return to the anchor PRB to perform random access. After the user equipment in the RRC connection state successfully performs the random access procedure on the back-end anchor PRB, the user equipment continues to transmit unicast data on the anchor PRB (for example, receiving the PDCCH, the PDSCH, and/or transmitting the PUSCH). ) Returning to a non-anchor PRB to transmit unicast data is a problem that needs to be solved.

Summary of the invention

To this end, the present invention proposes a technical solution for the UE in the RRC connected state to switch back to the non-anchor PRB to transmit and/or receive unicast data after performing the random access procedure on the anchor PRB.

According to an aspect of the present invention, a data transmission method performed at a user equipment UE is provided, including:

Receiving radio resource control RRC signaling from a base station, the RRC signaling including at least information about a non-anchor physical resource block PRB configured for the UE;

After the media access control MAC random access is successfully performed on the anchor PRB, the anchor PRB is switched back to the non-anchor PRB to transmit unicast data to the base station and/or receive unicast data from the base station on the non-anchor PRB.

In one embodiment, the step of switching from the anchor PRB back to the non-anchor PRB comprises: after the random access performed on the anchor PRB is successful, the UE automatically performs a handover from the anchor PRB back to the non-anchor PRB for on the non-anchor PRB The base station transmits unicast data and/or receives unicast data from the base station.

In an embodiment, the method further includes:

Receiving, from the base station, a handover indication for indicating that the UE switches from the anchor PRB back to the non-anchor PRB after the random access is successful to transmit unicast data to the base station on the non-anchor PRB and/or receive unicast data from the base station,

The step of switching from the anchor PRB back to the non-anchor PRB (S103) includes: performing handover from the anchor PRB back to the non-anchor PRB to the base station on the non-anchor PRB after the random access succeeds according to the received handover indication Send unicast data and/or receive unicast data from a base station.

In one embodiment, the handover indication is represented by parameters included in RRC signaling from a base station.

In an embodiment, the RRC signaling is one of the following: an RRC connection setup message, an RRC connection reestablishment message, an RRC connection reconfiguration message, and an RRC connection recovery message.

In one embodiment, the handover indication is represented by a medium access control control element MAC CE received from a base station in a random access procedure.

In one embodiment, the MAC CE is transmitted in a random access collision resolution message from a base station.

In one embodiment, the MAC CE is transmitted in a random access response message from a base station.

In one embodiment, after successful random access performed on the anchor PRB, the UE continues to transmit unicast data to the base station on the anchor PRB and/or receive unicast data from the base station until the MAC CE is received.

In one embodiment, the handover indication is represented by a field of a Media Access Control Protocol Data Unit MAC PDU header.

In one embodiment, the handover indication is carried by a downlink control information DCI carried by a downlink control channel received from a base station on an anchor PRB.

In one embodiment, after successful random access performed on the anchor PRB, the UE continues to transmit unicast data to the base station on the anchor PRB and/or receive unicast data from the base station until received on the downlink control channel. The switching indication.

According to another aspect of the present invention, a data transmission method performed at a base station is provided, include:

Transmitting radio resource control RRC signaling to the user equipment UE, the RRC signaling including at least information about a non-anchor physical resource block PRB configured for the UE;

The UE is configured to switch from the anchor PRB back to the non-anchor PRB after performing media access control MAC random access on the anchor PRB to send unicast data to the base station and/or receive unicast data from the base station on the non-anchor PRB.

In an embodiment, the method further includes:

Transmitting, to the UE, a handover indication for indicating that the UE switches from the anchor PRB back to the non-anchor PRB after the random access is successful to send unicast data to the base station on the non-anchor PRB and/or receive unicast data from the base station,

The step of configuring the UE to switch from the anchor PRB to the non-anchor PRB (S203) includes: configuring the UE to perform handover from the anchor PRB to the non-anchor PRB to be non-anchor after the random access succeeds according to the received handover indication. The PRB transmits unicast data to the base station and/or receives unicast data from the base station.

In one embodiment, the handover indication is represented by a medium access control control element MAC CE sent to the UE during a random access procedure.

In one embodiment, the MAC CE is transmitted in a random access collision resolution message sent to the UE.

In one embodiment, the MAC CE is transmitted in a random access response message sent to the UE.

In one embodiment, the handover indication is carried by a downlink control information DCI carried by a downlink control channel transmitted to the UE on the anchor PRB.

In one embodiment, after the random access performed on the anchor PRB is successful, the configuration UE continues to transmit unicast data to the base station on the anchor PRB and/or receive unicast data from the base station until receiving on the downlink control channel. To the switching indication.

According to another aspect of the present invention, a user equipment UE is provided, including:

a transceiver configured to receive radio resource control RRC signaling from a base station, the RRC signaling including at least information about a non-anchor physical resource block PRB configured for the UE;

a switching unit configured to switch from the anchor PRB back to the non-anchor PRB to perform unicast data to the base station on the non-anchor PRB and/or receive unicast from the base station after performing media access control MAC random access on the anchor PRB data.

In one embodiment, the switching unit is configured to:

After the random access performed on the anchor PRB is successful, switching from the anchor PRB back to the non-anchor PRB is performed automatically to transmit unicast data to the base station and/or receive unicast data from the base station on the non-anchor PRB.

In one embodiment, the transceiver is further configured to: receive from the base station to indicate that the UE switches from the anchor PRB back to the non-anchor PRB after the random access is successful to send the unicast data to the base station on the non-anchor PRB and / or a handover indication to receive unicast data from the base station;

The switching unit is further configured to perform handover from the anchor PRB back to the non-anchor PRB after the random access is successful to send unicast data to the base station on the non-anchor PRB and/or from the received handover indication. The base station receives unicast data.

In one embodiment, the transceiver is further configured to:

After the random access performed on the anchor PRB is successful, the unicast data is continuously transmitted to the base station on the anchor PRB and/or the unicast data is received from the base station until the MAC CE is received.

In one embodiment, the transceiver is further configured to:

After the random access performed on the anchor PRB is successful, unicast data is continued to be transmitted to the base station on the anchor PRB and/or received from the base station until the handover indication is received on the downlink control channel.

According to another aspect of the present invention, a base station is provided, comprising:

a transceiver configured to transmit radio resource control RRC signaling to the user equipment UE, the RRC signaling including at least information about a non-anchor physical resource block PRB configured for the UE;

a configuration unit configured to configure the UE to switch from the anchor PRB back to the non-anchor PRB after performing media access control MAC random access on the anchor PRB to send unicast data to the base station on the non-anchor PRB and/or receive the single from the base station Broadcast data.

In an embodiment, the transceiver is further configured to: send to the UE, to indicate that the UE switches from the anchor PRB back to the non-anchor PRB after the random access is successful to send the unicast data to the base station on the non-anchor PRB and / or a handover indication to receive unicast data from the base station;

The configuration unit is further configured to: configure, according to the received handover indication, the UE to perform handover from the anchor PRB to the non-anchor PRB after the random access is successful to send the unicast data to the base station on the non-anchor PRB and/or Or receive unicast data from the base station.

In one embodiment, the configuration unit is further configured to:

After the random access performed by the UE on the anchor PRB is successfully configured, the UE continues to send unicast data to the base station on the anchor PRB and/or receive unicast data from the base station until the MAC CE is received.

In one embodiment, the configuration unit is further configured to:

After the random access performed on the anchor PRB is successful, the configured UE continues to transmit unicast data to the base station on the anchor PRB and/or receive unicast data from the base station until the handover indication is received on the downlink control channel.

According to the foregoing embodiment of the present invention, when the number of users accessing the anchor PRB is large, the UE in the RRC connected state switches back to the non-anchor PRB to send and/or receive the ticket after successfully performing the random access procedure on the anchor PRB. Broadcast data can reduce the load of the anchor PRB and improve the channel utilization on the non-anchor PRB.

DRAWINGS

The above and other features of the present invention will become more apparent from the detailed description of the appended claims.

FIG. 1 shows a flow chart of a method performed at a UE, in accordance with an exemplary embodiment of the present invention;

2 shows a flow chart of a method performed at a base station in accordance with an exemplary embodiment of the present invention;

3-6 illustrate schematic signal flow diagrams between a UE and a base station when performing a method in accordance with an exemplary embodiment of the present invention;

FIG. 7 shows a schematic structural diagram of a UE according to an exemplary embodiment of the present invention;

FIG. 8 shows a schematic structural diagram of a base station according to an exemplary embodiment of the present invention.

detailed description

The invention is described in detail below with reference to the drawings and specific embodiments. It should be noted that the present invention should not be limited to the specific embodiments described below. In addition, for the sake of brevity, omitted Detailed descriptions of well-known techniques that are not directly related to the present invention are provided to avoid obscuring the understanding of the present invention.

The LTE mobile communication system and its subsequent evolved version are taken as an example application environment to support the base station and the UE of the NB-IOT as an example, and various embodiments according to the present invention are specifically described. However, it should be noted that the present invention is not limited to the following embodiments, but can be applied to more other wireless communication systems, such as future 5G cellular communication systems, and can be applied to other base stations and UEs, for example, supporting eMTC, MMTC. Base stations and UEs.

Hereinafter, a method performed at a UE according to an exemplary embodiment of the present invention will be described with reference to FIG. 1 and in conjunction with FIGS. 3 through 6.

FIG. 1 shows a flow diagram of a method 100 performed at a UE, in accordance with an exemplary embodiment of the present invention.

As shown in FIG. 1, in step S101, the UE receives Radio Resource Control (RRC) signaling from the base station. The RRC signaling includes at least information about a non-anchor PRB configured by the base station for the UE, as shown in the signal flows labeled 301, 401, 501, 601 in Figures 3-6, respectively. The RRC signaling includes, but is not limited to, any of the following messages: an RRC Connection Setup message, an RRC Connection Reestablishment message, an RRC Connection Reconfiguration message, an RRC Connection Recovery message, and the like.

Thus, in the RRC connected state, the UE may transmit unicast data to the base station and/or receive unicast data from the base station on the non-anchor PRB. For example, the unicast data may be a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), a Physical Uplink Shared Channel (PUSCH), etc., as labeled 302 in FIGS. 3 to 6, respectively. The signal flows of 402, 502, and 602 are shown.

However, when the UE detects a random access event, for example, when uplink data arrives or downlink data arrives but the user equipment uplink is not synchronized, the random access procedure is triggered, as labeled 303, 403 in FIGS. 3 to 6, respectively. The signal flows of 503 and 603 are shown.

Next, the UE performs MAC random access on the anchor PRB, as shown in the signal flows labeled 304, 404, 504, 604, respectively, in Figures 3-6.

In step S103, after the MAC random access performed by the UE on the anchor PRB is successful, the UE switches from the anchor PRB back to the non-anchor PRB to transmit the unicast data and/or the base station to the base station on the non-anchor PRB. Receiving the unicast data.

Here, steps S101 and S103 constitute a basic procedure for implementing the basic principle of the present invention, that is, information about a non-anchor PRB configured for a UE is included in RRC signaling received from a base station; And after the UE performs MAC random access successfully on the anchor PRB, the slave PRB switches back to the non-anchor PRB to send unicast data to the base station and/or receive unicast data from the base station on the non-anchor PRB. Thus, only steps S101 and S103 associated with the present invention are shown in the method 100 of FIG. 1 to avoid confusion. However, those skilled in the art will appreciate that the method in accordance with embodiments of the present invention may also include other steps, such as the signal streams labeled 302-304, 402-404, 502-504, 602-604, respectively, as in Figures 3-6. The process shown.

In an embodiment, after the random access performed on the anchor PRB is successful, the UE may automatically perform handover from the anchor PRB back to the non-anchor PRB in step S103 to transmit the unicast data to the base station on the non-anchor PRB and / or receiving the unicast data from the base station, as shown in the schematic signal flow diagram between the UE and the base station as shown in FIG.

The schematic signal flow diagram according to this embodiment shown in FIG. 3 may include the following process:

301: The UE receives RRC signaling from a base station, where the RRC signaling includes information about a non-anchor PRB configured for the UE.

302: The UE in the RRC connected state sends and receives unicast data on the non-anchor PRB.

303: The UE triggers a random access procedure based on a random access event (for example, uplink data arrives or downlink data arrives but the user equipment uplink is not synchronized).

304: The UE performs a random access procedure on the anchor PRB.

305: After the MAC random access succeeds, the UE automatically performs handover from the anchor PRB to the non-anchor PRB to send and receive the unicast data on the non-anchor PRB.

In another embodiment, the method 100 may further include the following steps (not shown in FIG. 1): receiving, from the base station, indicating that the UE switches from the anchor PRB back to the non-anchor PRB after the random access is successful to the non-anchor PRB. A handover indication that transmits unicast data to the base station and/or receives unicast data from the base station.

In this embodiment, step S103 may include: performing, according to the received handover indication, the handover from the anchor PRB to the non-anchor PRB after the random access is successful to send the unicast to the base station on the non-anchor PRB. The data and/or the unicast data is received from a base station.

There are several ways to switch the indication transmission.

In one embodiment, the handover indication may be transmitted by RRC signaling from the base station, as shown by the signal flow labeled 401' in FIG.

For example, the handover indication may be represented by parameters included in RRC signaling from a base station. For example, the UE receives the RRC signaling from the base station, where the RRC signaling includes a parameter, where the parameter is used to indicate whether the UE starts after the MAC random access succeeds on the anchor PRB. The unicast data is sent and received on the non-anchor PRB. As described above, the RRC signaling includes but is not limited to any of the following messages: an RRC Connection Setup message, an RRC Connection Reestablishment message, an RRC Connection Reconfiguration message, an RRC Connection Recovery message, and the like.

The schematic signal flow diagram according to this embodiment shown in FIG. 4 may include the following process:

401: The UE receives RRC signaling from a base station, where the RRC signaling includes information about a non-anchor PRB configured for the UE.

401 ′: The UE receives the RRC signaling from the base station, where the RRC signaling includes a handover indication indicated by a parameter, where the handover indication is used to indicate whether the UE starts to be non-anchor after the MAC random access succeeds on the anchor PRB. Transmitting and receiving the unicast data on the PRB;

402: The UE in the RRC connected state sends and receives unicast data on the non-anchor PRB.

403: The UE triggers a random access procedure based on a random access event (for example, uplink data arrives or downlink data arrives but the user equipment uplink is not synchronized).

404: The UE performs a random access procedure on the anchor PRB.

405: According to the handover indication, after the MAC random access succeeds, the UE switches from the anchor PRB to the non-anchor PRB to send and receive the unicast data on the non-anchor PRB.

It should be noted that the RRC signaling labeled 401 and 401 ′ in FIG. 4 may be different RRC signaling, or may be the same RRC signaling, that is, the base station configures a non-anchor for the user equipment in the same RRC signaling. The PRB and carrying parameters indicating whether the UE switches from the anchor PRB back to the non-anchor PRB after successful random access to transmit unicast data to the base station on the non-anchor PRB and/or receive unicast data from the base station.

In another embodiment, the handover indication may be represented by a Medium Access Control Control Element (MAC CE) in a message received from a base station in a random access procedure, such as the signal flow labeled 504' in FIG. Shown.

The schematic signal flow diagram according to this embodiment shown in FIG. 5 may include the following process:

501: The UE receives RRC signaling from a base station, where the RRC signaling includes information about a non-anchor PRB configured for the UE.

502: The UE in the RRC connected state sends and receives unicast data on the non-anchor PRB.

503: The UE triggers a random access procedure based on a random access event (for example, uplink data arrives or downlink data arrives but the user equipment uplink is not synchronized).

504: The UE performs a random access procedure on the anchor PRB.

504': The UE receives the MAC CE table in the message sent by the base station in the random access procedure. The handover indication is used to indicate that the UE switches to the non-anchor PRB to send and receive the unicast data after the MAC random access succeeds on the anchor PRB;

505: According to the handover indication, after the MAC random access succeeds, the UE sends and receives unicast data on the non-anchor PRB.

It should be noted that the signal stream 504' shown in Figure 5 is applicable to the following two situations:

Scenario 1: When the UE performs random access access on the anchor PRB, the MAC CE indicating the handover indication may be transmitted in the random access collision resolution message or the random access response message RAR from the base station, so that the UE may be in the MAC random access. After successful, the switch to the non-anchor PRB transmits and receives the unicast data.

Alternatively, the handover indication may also be represented by a field of the Media Access Control Protocol Data Unit MAC PDU header.

For example, for contention-based random access, the MAC PDU header of the conflict resolution message 4 of the random access procedure may include a field (indicator bit) for indicating that the UE starts to be non-anchor after the MAC random access succeeds. The unicast data is sent and received on the PRB. For the non-contention based random access, the MAC PDU header of the random access response message of the random access procedure may include a field (indicator bit) for indicating that the UE starts to be in the non-MAC after the random access of the MAC is successful. The PDCCH, the PDSCH, and/or the PUSCH unicast data are received on the anchor PRB.

Case 2: After performing the random access on the anchor PRB, the UE continues to send and receive the unicast data on the anchor PRB until receiving the MAC CE indicating that the UE switches to the non-anchor PRB to send and receive the unicast data.

In another implementation manner, the handover indication may be carried by downlink control information DCI carried by a downlink control channel PDCCH received from a base station in a random access procedure, such as the signal labeled as 605 ′ in FIG. 6 . The flow shows.

The schematic signal flow diagram according to this embodiment shown in FIG. 6 may include the following process:

601: The UE receives RRC signaling from a base station, where the RRC signaling includes information about a non-anchor PRB configured for the UE.

602: The UE in the RRC connected state sends and receives unicast data on the non-anchor PRB.

603: The UE triggers a random access procedure based on a random access event (for example, uplink data arrives or downlink data arrives but the user equipment uplink is not synchronized).

604: The UE performs a random access procedure on the anchor PRB.

605': the UE receives on the PDCCH that the UE operating on the anchor PRB switches to a non-anchor The downlink control information DCI on the PRB, instructing the UE to switch to the non-anchor PRB to send and receive the unicast data after the MAC random access succeeds on the anchor PRB;

605: According to the handover indication, after the MAC random access succeeds, the UE sends and receives unicast data on the non-anchor PRB.

Optionally, for contention based random access, the PDCCH corresponds to a conflict resolution message of a random access procedure. For non-contention based random access, the PDCCH corresponds to a random access procedure random access response message.

Hereinafter, a method performed at a base station according to an exemplary embodiment of the present invention will be described with reference to FIG. 2 and in conjunction with FIGS. 3 through 6.

FIG. 2 shows a flow diagram of a method 200 performed at a base station in accordance with an exemplary embodiment of the present invention.

As shown in FIG. 2, in step S201, the base station sends RRC signaling to the UE, where the RRC signaling includes at least information about a non-anchor physical resource block PRB configured for the UE, as marked in FIGS. 3 to 6 respectively. The signal flows of 301, 401, 501, and 601 are shown. The RRC signaling includes, but is not limited to, any of the following messages: an RRC Connection Setup message, an RRC Connection Reestablishment message, an RRC Connection Reconfiguration message, an RRC Connection Recovery message, and the like.

Thus, in the RRC connected state, the base station can receive unicast data from the UE and/or transmit unicast data to the UE on the non-anchor PRB. For example, the unicast data may be a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), a Physical Uplink Shared Channel (PUSCH), etc., as labeled 302 in FIGS. 3 to 6, respectively. The signal flows of 402, 502, and 602 are shown.

When the UE detects a random access event, for example, when the uplink data arrives or the downlink data arrives but the user equipment uplink is not synchronized, the random access procedure is triggered, as labeled 303, 403, and 503 in FIG. 3 to FIG. 6, respectively. The signal flow of 603 is shown.

Next, the base station receives a random access request from the UE, and performs signaling interaction with the UE on the anchor PRB to enable the UE to implement MAC random access, as labeled as 304, 404, 504, and 604 in FIGS. 3-6, respectively. The signal flow is shown.

In step S203, the base station configures the UE to switch from the anchor PRB back to the non-anchor PRB after performing MAC random access on the anchor PRB to send unicast data to the base station on the non-anchor PRB and/or receive unicast from the base station. data.

Here, steps S201 and S203 constitute a basic process for implementing the basic principles of the present invention, That is, the RRC signaling sent by the base station to the UE includes information about the non-anchor PRB configured for the UE; and the base station configures the UE to switch from the anchor PRB back to the non-anchor PRB after performing the MAC random access successfully on the anchor PRB. To transmit unicast data to the base station and/or receive unicast data from the base station on the non-anchor PRB. Thus, only steps S201 and S203 associated with the present invention are shown in the method 200 of FIG. 2 to avoid confusion. However, those skilled in the art will appreciate that the method 200 of FIG. 2 may also include other steps, such as the signal streams labeled 302 and 304, 402 and 404, 502 and 504, 602, and 604, respectively, in FIGS. 3-6. The process of showing.

In an embodiment, the method 200 may further include the following steps (not shown in FIG. 1): transmitting to the UE, indicating that the UE switches from the anchor PRB back to the non-anchor PRB after the random access is successful to be on the non-anchor PRB. A handover indication that transmits unicast data to the base station and/or receives unicast data from the base station.

In this embodiment, step S203 may include: configuring the UE to perform handover from the anchor PRB to the non-anchor PRB to send to the base station on the non-anchor PRB after the random access is successful according to the received handover indication. The unicast data and/or the unicast data is received from a base station.

As mentioned earlier, the transmission of the handover indication can take many forms.

In an embodiment, the handover indication may be transmitted by RRC signaling sent by the base station, as indicated by the signal flow labeled 401' in FIG.

For example, the handover indication may be represented by a parameter included in the RRC signaling sent by the base station. For example, the eNB sends the RRC signaling to the UE, where the RRC signaling includes a parameter, where the parameter is used to indicate whether the UE starts to send and receive the unicast data on the non-anchor PRB after the MAC random access succeeds on the anchor PRB. .

401 ′: transmitting RRC signaling to the UE, where the RRC signaling includes a handover indication indicated by a parameter, where the handover indication is used to indicate whether the UE starts to send and receive on the non-anchor PRB after the MAC random access succeeds on the anchor PRB. The unicast data;

402: Send and receive the unicast data on a non-anchor PRB.

404: Perform signaling interaction with the UE on the anchor PRB to enable the UE to implement MAC random access in response to the random access request of the UE.

405. Configure, according to the handover indication, the UE performs handover from the anchor PRB to the non-anchor PRB after the MAC random access is successful to send and receive the unicast data on the non-anchor PRB.

In another embodiment, the handover indication may be represented by a MAC CE in a message transmitted by the base station during a random access procedure, as indicated by the signal flow labeled 504' in FIG.

501: Send RRC signaling to the UE, where the RRC signaling includes information about a non-anchor PRB configured for the UE;

502: Send and receive unicast data on the non-anchor PRB.

504: Perform signaling interaction with the UE on the anchor PRB to enable the UE to implement MAC random access in response to the random access request of the UE.

504 ′: transmitting a handover indication indicated by a MAC CE in a message sent by the base station in the random access procedure, where the handover indication is used to indicate that the UE switches to the non-anchor PRB after the MAC random access succeeds on the anchor PRB. Unicast data;

505. Configure, according to the handover indication, the UE performs handover from the anchor PRB to the non-anchor PRB after the MAC random access is successful to send and receive the unicast data on the non-anchor PRB.

In another implementation manner, the handover indication may be carried by the downlink control information DCI carried by the downlink control channel PDCCH sent by the base station in the random access procedure, as shown in FIG. The flow shows.

601: Send RRC signaling to the UE, where the RRC signaling includes information about a non-anchor PRB configured for the UE;

602: Send and receive unicast data on the non-anchor PRB.

604: Perform signaling interaction with the UE on the anchor PRB to enable the UE to implement MAC random access in response to the random access request of the UE.

605 ′: transmitting, on the PDCCH, a DCI that indicates that the UE working on the anchor PRB switches to the non-anchor PRB, and indicates that the UE switches to the non-anchor PRB to send and receive the unicast data after the MAC random access succeeds on the anchor PRB.

605: Configure the UE to perform handover from the anchor PRB to the non-anchor PRB to send and receive the unicast data on the non-anchor PRB after the MAC random access is successful according to the handover indication.

Hereinafter, a schematic structural diagram of a UE according to an exemplary embodiment of the present invention will be described with reference to FIG. 7.

FIG. 7 shows a schematic structural diagram of a UE 700 according to an exemplary embodiment of the present invention.

As shown in FIG. 7, the UE 700 includes a transceiver 701 and a switching unit 703.

In one embodiment, the UE 700 can perform the method 100 as shown in FIG.

The transceiver 701 can be configured to perform step S101, that is, receiving an RRC letter from the base station Let the RRC signaling include at least information about a non-anchor physical resource block PRB configured for the UE.

The switching unit 703 may be configured to perform step S103, that is, after the UE performs MAC random access success on the anchor PRB, switch from the anchor PRB back to the non-anchor PRB to send unicast data to the base station on the non-anchor PRB and/or Or receive unicast data from the base station.

Here, the transceiver 701 performing step S101 and the switching unit 703 performing step S103 constitute a basic procedure for implementing the basic principle of the present invention, that is, the transceiver 701 includes information about configuring the UE in the RRC signaling received from the base station. Information of the non-anchor PRB; and the handover unit 703 switches from the anchor PRB back to the non-anchor PRB to transmit unicast data and/or from the non-anchor PRB to the base station after the UE performs the MAC random access success on the anchor PRB. The base station receives unicast data. Thus, only the fabric transceiver 701 and switching unit 703 associated with the present invention are shown in the UE 700 of FIG. 7 to avoid confusion. However, those skilled in the art will appreciate that a UE in accordance with an embodiment of the present invention may also include other units, such as to perform the labels 302-304, 402-404, 502-504, 602-604, respectively, in Figures 3-6. The signal flow is shown in the various units of the process.

In one embodiment, after the random access performed on the anchor PRB is successful, the handover unit 703 of the UE 700 may automatically perform a handover from the anchor PRB back to the non-anchor PRB to transmit to the base station on the non-anchor PRB in step S103. The unicast data is received and/or received from the base station, as shown in the schematic signal flow diagram between the UE and the base station as shown in FIG.

The schematic signal flow diagram according to this embodiment on the UE 700 side shown in FIG. 3 may include the following process:

301: The transceiver 701 of the UE 700 receives RRC signaling from a base station, where the RRC signaling includes information about a non-anchor PRB configured for the UE;

302: The transceiver 701 of the UE 700 in the RRC connected state sends and receives unicast data on the non-anchor PRB.

303: The triggering unit (not shown) of the UE 700 triggers a random access procedure based on a random access event (eg, uplink data arrives or downlink data arrives but the user equipment uplink is not synchronized);

304: a unit (not shown) of the UE 700 for performing random access performs a random access procedure on the anchor PRB;

305: After the MAC random access succeeds, the handover unit 703 of the UE 700 automatically performs handover from the anchor PRB back to the non-anchor PRB to send and receive the unicast data on the non-anchor PRB.

In another embodiment, the transceiver 701 of the UE 700 may be further configured to: receive from the base station to indicate that the UE switches from the anchor PRB back to the non-anchor PRB after the random access is successful to be in the non-anchor A handover indication for transmitting unicast data to the base station and/or receiving unicast data from the base station on the PRB.

In this embodiment, the switching unit 703 of the UE 700 may be further configured to perform switching from the anchor PRB back to the non-anchor PRB to perform on the non-anchor PRB after the random access succeeds according to the received handover indication. The base station transmits the unicast data and/or receives the unicast data from a base station.

For example, the handover indication may be represented by parameters included in RRC signaling from a base station. For example, the UE receives the RRC signaling from the base station, where the RRC signaling includes a parameter, where the parameter is used to indicate whether the UE starts to send and receive the ticket on the non-anchor PRB after the MAC random access succeeds on the anchor PRB. Broadcast data. As described above, the RRC signaling includes but is not limited to any of the following messages: an RRC Connection Setup message, an RRC Connection Reestablishment message, an RRC Connection Reconfiguration message, an RRC Connection Recovery message, and the like.

The schematic signal flow diagram according to this embodiment on the UE 700 side shown in FIG. 4 may include the following process:

401: The transceiver 701 of the UE 700 receives RRC signaling from a base station, where the RRC signaling includes information about a non-anchor PRB configured for the UE;

401 ′: The transceiver 701 of the UE 700 receives the RRC signaling from the base station, where the RRC signaling includes a handover indication indicated by a parameter, where the handover indication is used to indicate that the UE successfully accesses the MAC on the anchor PRB. Whether to start sending and receiving the unicast data on the non-anchor PRB;

402: The transceiver 701 of the UE 700 in the RRC connected state sends and receives unicast data on the non-anchor PRB.

403: The triggering unit (not shown) of the UE 700 triggers a random access procedure based on a random access event (eg, uplink data arrives or downlink data arrives but the user equipment uplink is not synchronized);

404: A unit (not shown) of the UE 700 for performing random access performs a random access procedure on the anchor PRB;

405: According to the handover indication, after the MAC random access is successful, the handover unit 703 of the UE 700 performs handover from the anchor PRB to the non-anchor PRB to send and receive the unicast data on the non-anchor PRB.

As mentioned above, the RRC signaling labeled 401 and 401' in Figure 4 may be different RRC signaling or the same RRC signaling.

In another embodiment, the handover indication may be represented by a MAC CE in a message received from a base station in a random access procedure, as indicated by the signal flow labeled 504' in FIG.

The schematic signal flow diagram according to this embodiment on the UE 700 side shown in FIG. 5 may include the following process:

501: The transceiver 701 of the UE 700 receives RRC signaling from a base station, where the RRC signaling includes information about a non-anchor PRB configured for the UE;

502: The transceiver 701 of the UE 700 in the RRC connected state sends and receives unicast data on the non-anchor PRB.

503: The triggering unit (not shown) of the UE 700 triggers a random access procedure based on a random access event (eg, uplink data arrives or downlink data arrives but the user equipment uplink is not synchronized);

504: a unit (not shown) of the UE 700 for performing random access performs a random access procedure on the anchor PRB;

504 ′: The transceiver 701 of the UE 700 receives the handover indication indicated by the MAC CE in the message sent by the base station in the random access procedure, where the handover indication is used to indicate that the UE switches after the MAC random access succeeds on the anchor PRB. Transmitting and receiving the unicast data to a non-anchor PRB;

505: According to the handover indication, after the MAC random access is successful, the handover unit 703 of the UE 700 performs handover from the anchor PRB to the non-anchor PRB to send and receive the unicast data on the non-anchor PRB.

As previously mentioned, the signal stream 504' shown in Figure 5 is suitable for the following two situations:

For example, for contention-based random access, the MAC PDU header of the conflict resolution message 4 of the random access procedure may include a field (indicator bit) for indicating that the UE starts to be non-anchor after the MAC random access succeeds. The unicast data is sent and received on the PRB. For the non-contention based random access, the MAC PDU header of the random access response (RAR) message of the random access procedure may include a field (indicator bit) for indicating that after the MAC random access succeeds, Start receiving PDCCH, PDSCH, and/or transmitting PUSCH unicast data on a non-anchor PRB.

The schematic signal flow diagram according to this embodiment on the UE 700 side shown in FIG. 6 may include the following process:

601: The transceiver 701 of the UE 700 receives RRC signaling from a base station, where the RRC signaling includes information about a non-anchor PRB configured for the UE;

602: The transceiver 701 of the UE 700 in the RRC connected state sends and receives unicast data on the non-anchor PRB.

603: The triggering unit (not shown) of the UE 700 triggers a random access procedure based on a random access event (eg, uplink data arrives or downlink data arrives but the user equipment uplink is not synchronized);

604: A unit (not shown) of the UE 700 for performing random access performs a random access procedure on the anchor PRB;

605 ′: The transceiver 701 of the UE 700 receives the DCI indicating that the UE operating on the anchor PRB switches to the non-anchor PRB on the PDCCH, and instructs the UE to switch to the non-anchor PRB after the MAC random access succeeds on the anchor PRB. The unicast data;

605: According to the handover indication, after the MAC random access succeeds, the handover unit 703 of the UE 700 performs handover from the anchor PRB to the non-anchor PRB to send and receive the unicast data on the non-anchor PRB.

Hereinafter, a schematic configuration diagram of a base station according to an exemplary embodiment of the present invention will be described with reference to FIG. 8.

FIG. 8 shows a schematic structural diagram of a base station 800 according to an exemplary embodiment of the present invention.

As shown in FIG. 8, the base station 800 includes a transceiver 801 and a configuration unit 803.

In one embodiment, base station 800 can perform method 200 as shown in FIG.

The transceiver 801 can be configured to perform step S201 of transmitting RRC signaling to the UE, the RRC signaling including at least information about a non-anchor physical resource block PRB configured for the UE.

The configuration unit 803 can be configured to perform step S203, that is, configuring the UE to switch from the anchor PRB back to the non-anchor PRB after performing the media access control MAC random access on the anchor PRB. The non-anchor PRB transmits unicast data to the base station and/or receives unicast data from the base station.

Here, the transceiver 801 performing step S201 and the configuration unit 803 performing step S203 constitute a basic procedure for implementing the basic principle of the present invention, that is, the transceiver 801 includes information about configuring the UE in the RRC signaling transmitted to the UE. The non-anchor PRB information; and the configuration unit 803 configures the UE such that the UE switches from the anchor PRB back to the non-anchor PRB to send the unicast to the base station on the non-anchor PRB after the MAC random access is successfully performed on the anchor PRB. Data and/or receiving unicast data from a base station. Thus, only the fabric transceiver 801 and configuration unit 803 associated with the present invention are shown in the base station 800 of FIG. 8 to avoid confusion. However, those skilled in the art will appreciate that a base station in accordance with embodiments of the present invention may also include other units, such as to perform the labels 302 and 304, 402 and 404, 502 and 504, 602 and 604, respectively, in Figures 3-6. The signal flow is shown in the various units of the process.

In an embodiment, the transceiver 801 may be further configured to: send to the UE, to indicate that the UE switches from the anchor PRB back to the non-anchor PRB after the random access succeeds to send the unicast data to the base station on the non-anchor PRB and / or receiving a handover indication of unicast data from the base station.

In this embodiment, the configuration unit 803 may be further configured to: configure the UE to perform handover from the anchor PRB back to the non-anchor PRB to perform the non-anchor PRB after the random access is successful according to the received handover indication. The unicast data is transmitted to the base station and/or received from the base station.

The schematic signal flow diagram according to this embodiment on the side of the base station 800 shown in FIG. 4 may include the following process:

401: The transceiver 801 of the base station 800 sends RRC signaling to the UE, where the RRC signaling includes information about a non-anchor PRB configured for the UE;

401': The transceiver 801 of the base station 800 sends RRC signaling to the UE, where the RRC signaling includes a handover indication indicated by a parameter, where the handover indication is used to indicate that the UE is on the anchor PRB. Whether the unicast data is sent and received on the non-anchor PRB after the random access succeeds;

402: The transceiver 801 of the base station 800 sends and receives the unicast data on the non-anchor PRB.

404: A unit (not shown) of the base station 800 for performing random access with the UE performs signaling interaction with the UE on the anchor PRB to enable the UE to implement MAC random access in response to the random access request of the UE.

405: The configuration unit 803 of the base station 800 configures the UE to perform handover from the anchor PRB to the non-anchor PRB to transmit and receive the unicast data on the non-anchor PRB after the MAC random access is successful according to the handover indication.

The schematic signal flow diagram according to this embodiment on the side of the base station 800 shown in FIG. 5 may include the following process:

501: The transceiver 801 of the base station 800 sends RRC signaling to the UE, where the RRC signaling includes information about a non-anchor PRB configured for the UE;

502: The transceiver 801 of the base station 800 sends and receives unicast data on the non-anchor PRB.

504: A unit (not shown) of the base station 800 for performing random access with the UE performs signaling interaction with the UE on the anchor PRB to enable the UE to implement MAC random access in response to the random access request of the UE.

504 ′: The transceiver 801 of the base station 800 sends a handover indication indicated by the MAC CE in the message sent by the base station in the random access procedure, where the handover indication is used to indicate that the UE switches to the MAC random access on the anchor PRB. Transmitting and receiving the unicast data on the non-anchor PRB;

505: The configuration unit 803 of the base station 800 configures the UE to perform handover from the anchor PRB to the non-anchor PRB to transmit and receive the unicast data on the non-anchor PRB after the MAC random access is successful according to the handover indication.

The schematic signal flow diagram according to this embodiment on the side of the base station 800 shown in FIG. 6 may include the following process:

601: The transceiver 801 of the base station 800 sends RRC signaling to the UE, where the RRC signaling includes information about a non-anchor PRB configured for the UE;

602: The transceiver 801 of the base station 800 sends and receives unicast data on the non-anchor PRB.

604: The unit (not shown) of the base station 800 for performing the random access with the UE performs signaling interaction with the UE on the anchor PRB to enable the UE to implement MAC random access in response to the random access request of the UE.

605 ′: The transceiver 801 of the base station 800 sends a DCI indicating that the UE operating on the anchor PRB switches to the non-anchor PRB on the PDCCH, and instructs the UE to switch to the non-anchor PRB after the MAC random access succeeds on the anchor PRB. Unicast data;

605: The configuration unit 803 of the base station 800 configures the UE to perform handover from the anchor PRB back to the non-anchor PRB to transmit and receive the unicast data on the non-anchor PRB after the MAC random access is successful according to the handover indication.

According to the foregoing exemplary embodiment of the present invention, when the number of users accessing the anchor PRB is large, the UE in the RRC connected state switches back to the non-anchor PRB by performing a random access procedure on the anchor PRB, and/or Receiving unicast data can reduce the load of the anchor PRB and improve the channel utilization on the non-anchor PRB.

The method and apparatus of the present invention have been described above in connection with the preferred embodiments. Those skilled in the art will appreciate that the methods shown above are merely exemplary. The method of the present invention is not limited to the steps and sequences shown above. The network nodes and user equipment shown above may include more modules, for example, may also include modules that may be developed or developed in the future for base stations or UEs, and the like. The various logos shown above are merely exemplary and not limiting, and the invention is not limited to specific cells as examples of such identifications. Many variations and modifications can be made by those skilled in the art in light of the teachings of the illustrated embodiments.

It should be understood that the above-described embodiments of the present invention can be implemented by software, hardware, or a combination of both software and hardware. For example, the base station and various components within the user equipment in the above embodiments may be implemented by various devices including, but not limited to, analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, and programmable processing. , Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), Programmable Logic Devices (CPLDs), and more.

In the present application, "base station" refers to a mobile communication data and control switching center having a large transmission power and a relatively large coverage area, including resource allocation scheduling, data reception and transmission, and the like. "User equipment" refers to a user mobile terminal, for example, a terminal device including a mobile phone, a notebook, etc., which can perform wireless communication with a base station or a micro base station.

Moreover, embodiments of the invention disclosed herein may be implemented on a computer program product. More specifically, the computer program product is a product having a computer readable medium encoded with computer program logic that, when executed on a computing device, provides related operations to implement The above technical solution of the present invention. When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in the embodiments of the present invention. Such an arrangement of the present invention is typically provided as software, code and/or other data structures, or such as one or more, that are arranged or encoded on a computer readable medium such as an optical medium (e.g., CD-ROM), floppy disk, or hard disk. Firmware or microcode of other media on a ROM or RAM or PROM chip, or downloadable software images, shared databases, etc. in one or more modules. Software or firmware or such a configuration may be installed on the computing device such that one or more processors in the computing device perform the technical solutions described in the embodiments of the present invention.

Furthermore, each functional module or individual feature of the base station device and the terminal device used in each of the above embodiments may be implemented or executed by circuitry, typically one or more integrated circuits. Circuitry designed to perform the various functions described in this specification can include general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs) or general purpose integrated circuits, field programmable gate arrays (FPGAs), or others. Program logic, discrete gate or transistor logic, or discrete hardware components, or any combination of the above. A general purpose processor may be a microprocessor, or the processor may be an existing processor, controller, microcontroller, or state machine. The above general purpose processor or each circuit may be configured by a digital circuit or may be configured by a logic circuit. Further, when advanced technologies capable of replacing current integrated circuits have emerged due to advances in semiconductor technology, the present invention can also use integrated circuits obtained by using the advanced technology.

While the invention has been described in terms of the preferred embodiments of the present invention, it will be understood that Therefore, the present invention should not be limited by the foregoing embodiments, but by the appended claims and their equivalents.

The program running on the device according to the present invention may be a program that causes a computer to implement the functions of the embodiments of the present invention by controlling a central processing unit (CPU). The program or information processed by the program may be temporarily stored in a volatile memory (such as a random access memory RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memory system.

A program for realizing the functions of the embodiments of the present invention can be recorded on a computer readable recording medium. The program recorded on the recording medium can be read by a computer system and executed Program to achieve the corresponding function. The so-called "computer system" herein may be a computer system embedded in the device, and may include an operating system or hardware (such as a peripheral device). The "computer readable recording medium" may be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a recording medium of a short-term dynamic storage program, or any other recording medium readable by a computer.

The various features or functional blocks of the apparatus used in the above embodiments may be implemented or executed by circuitry (e.g., monolithic or multi-chip integrated circuits). Circuitry designed to perform the functions described in this specification can include general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other programmable logic devices, discrete Gate or transistor logic, discrete hardware components, or any combination of the above. A general purpose processor may be a microprocessor or any existing processor, controller, microcontroller, or state machine. The above circuit may be a digital circuit or an analog circuit. In the case of new integrated circuit technologies that replace existing integrated circuits due to advances in semiconductor technology, the present invention can also be implemented using these new integrated circuit technologies.

Further, the present invention is not limited to the above embodiment. Although various examples of the embodiments have been described, the invention is not limited thereto. Fixed or non-mobile electronic devices installed indoors or outdoors can be used as terminal devices or communication devices such as AV devices, kitchen devices, cleaning devices, air conditioners, office equipment, vending machines, and other home appliances.

As above, the embodiments of the present invention have been described in detail with reference to the accompanying drawings. However, the specific structure is not limited to the above embodiments, and the present invention also includes any design modifications not departing from the gist of the present invention. In addition, various modifications may be made to the invention within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments are also included in the technical scope of the present invention. Further, the components having the same effects described in the above embodiments may be substituted for each other.

Claims

A data transmission method (100) performed at a user equipment UE, comprising:

Receiving (S101) radio resource control RRC signaling from a base station, the RRC signaling including at least information about a non-anchor physical resource block PRB configured for the UE;

After the media access control MAC random access is successfully performed on the anchor PRB, the anchor PRB is handed over (S103) back to the non-anchor PRB to transmit unicast data to the base station and/or receive unicast data from the base station on the non-anchor PRB.
The method of claim 1, wherein the step of switching back from the anchor PRB to the non-anchor PRB (S103) comprises: after the random access performed on the anchor PRB is successful, the UE automatically performs switching from the anchor PRB back to the non-anchor PRB To transmit unicast data to the base station and/or receive unicast data from the base station on the non-anchor PRB.
The method of claim 1 further comprising:

Receiving, from the base station, a handover indication for indicating that the UE switches from the anchor PRB back to the non-anchor PRB after the random access is successful to transmit unicast data to the base station on the non-anchor PRB and/or receive unicast data from the base station,

The step of switching from the anchor PRB back to the non-anchor PRB (S103) includes: performing handover from the anchor PRB back to the non-anchor PRB to the base station on the non-anchor PRB after the random access succeeds according to the received handover indication Send unicast data and/or receive unicast data from a base station.
The method of claim 3 wherein

The handover indication is represented by a parameter included in RRC signaling from a base station.
The method according to any one of claims 1 to 4, wherein the RRC signaling is one of: an RRC Connection Setup message, an RRC Connection Reestablishment message, an RRC Connection Reconfiguration message, an RRC Connection Recovery message.
The method of claim 3 wherein

The handover indication is represented by a medium access control control element MAC CE received from a base station in a random access procedure.
The method of claim 6 wherein

The MAC CE is transmitted in a random access collision resolution message from a base station.
The method of claim 6 wherein

The MAC CE is transmitted in a random access response message from a base station.
The method of claim 6 wherein

After the random access performed on the anchor PRB is successful, the UE continues to transmit unicast data to the base station on the anchor PRB and/or receive unicast data from the base station until the MAC CE is received.
The method of claim 3 wherein

The handover indication is represented by a field of the Media Access Control Protocol Data Unit MAC PDU header.
The method of claim 3 wherein

The handover indication is carried by a downlink control information DCI carried by a downlink control channel received from a base station on an anchor PRB.
The method of claim 11 wherein

After the random access performed on the anchor PRB is successful, the UE continues to transmit unicast data to the base station on the anchor PRB and/or receive unicast data from the base station until the handover indication is received on the downlink control channel.
A data transmission method (200) performed at a base station, comprising:

Transmitting (S201) radio resource control RRC signaling to the user equipment UE, the RRC signaling including at least information about a non-anchor physical resource block PRB configured for the UE;

Configuring (S203) the UE switches from the anchor PRB back to the non-anchor PRB after performing media access control MAC random access on the anchor PRB to send unicast data to the base station and/or receive unicast data from the base station on the non-anchor PRB.
The method of claim 13 further comprising:

Transmitting, to the UE, a handover indication for indicating that the UE switches from the anchor PRB back to the non-anchor PRB after the random access is successful to send unicast data to the base station on the non-anchor PRB and/or receive unicast data from the base station,

The step of configuring the UE to switch from the anchor PRB to the non-anchor PRB (S203) includes: configuring the UE to perform handover from the anchor PRB to the non-anchor PRB to be non-anchor after the random access succeeds according to the received handover indication. The PRB transmits unicast data to the base station and/or receives unicast data from the base station.
The method of claim 14 wherein

The handover indication is represented by a parameter included in RRC signaling from a base station.
The method according to any one of claims 12 to 15, wherein the RRC signaling is one of: an RRC connection setup message, an RRC connection reestablishment message, an RRC connection reconfiguration cancellation Information, RRC connection recovery message.
The method of claim 14 wherein

The handover indication is represented by a medium access control control element MAC CE sent to the UE in a random access procedure.
The method of claim 17 wherein

The MAC CE is transmitted in a random access conflict resolution message sent to the UE.
The method of claim 17 wherein

The MAC CE is transmitted in a random access response message sent to the UE.
The method of claim 17 wherein

After the random access performed on the anchor PRB is successful, the UE continues to transmit unicast data to the base station on the anchor PRB and/or receive unicast data from the base station until the MAC CE is received.
The method of claim 14 wherein

The handover indication is represented by a field of the Media Access Control Protocol Data Unit MAC PDU header.
The method of claim 14 wherein

The handover indication is carried by a downlink control information DCI carried by a downlink control channel transmitted to the UE on the anchor PRB.
The method of claim 22 wherein

After the random access performed on the anchor PRB is successful, the configured UE continues to transmit unicast data to the base station on the anchor PRB and/or receive unicast data from the base station until the handover indication is received on the downlink control channel.
A user equipment UE (700) includes:

a transceiver (701) configured to receive radio resource control RRC signaling from a base station, the RRC signaling including at least information about a non-anchor physical resource block PRB configured for the UE;

The switching unit (703) is configured to switch from the anchor PRB back to the non-anchor PRB to perform unicast data and/or from the base station on the non-anchor PRB after performing media access control MAC random access on the anchor PRB. Receive unicast data.
The UE (700) according to claim 24, wherein the switching unit (703) is configured to:

After the random access performed on the anchor PRB is successful, switching from the anchor PRB back to the non-anchor PRB is performed automatically to transmit unicast data to the base station and/or receive unicast data from the base station on the non-anchor PRB.
The UE (700) of claim 21 wherein

The transceiver (701) is further configured to: receive from the base station to instruct the UE to switch from the anchor PRB back to the non-anchor PRB after the random access is successful to send unicast data to the base station on the non-anchor PRB and/or from the base station a handover indication that the base station receives unicast data;

The switching unit (703) is further configured to: perform handover from the anchor PRB back to the non-anchor PRB to transmit unicast data to the base station on the non-anchor PRB after the random access succeeds according to the received handover indication / or receive unicast data from the base station.
The UE (700) of claim 26, wherein

The handover indication is represented by a parameter included in RRC signaling from a base station.
The UE (700) according to any one of claims 24 to 27, wherein the RRC signaling is one of: an RRC Connection Setup message, an RRC Connection Reestablishment message, an RRC Connection Reconfiguration message, an RRC Connection Recovery message.
The UE (700) of claim 26, wherein

The handover indication is represented by a medium access control control element MAC CE received from a base station in a random access procedure.
The UE (700) of claim 29, wherein

The MAC CE is transmitted in a random access collision resolution message from a base station.
The UE (700) of claim 29, wherein

The MAC CE is transmitted in a random access response message from a base station.
The UE (700) of claim 29, wherein the transceiver (701) is further configured to:

After the random access performed on the anchor PRB is successful, the unicast data is continuously transmitted to the base station on the anchor PRB and/or the unicast data is received from the base station until the MAC CE is received.
The UE (700) of claim 26, wherein

The handover indication is represented by a field of the Media Access Control Protocol Data Unit MAC PDU header.
The UE (700) of claim 26, wherein

The handover indication is carried by a downlink control information DCI carried by a downlink control channel received from a base station on an anchor PRB.
The UE (700) of claim 34, wherein the transceiver (701) is further configured to:

After the random access performed on the anchor PRB is successful, unicast data is continued to be transmitted to the base station on the anchor PRB and/or received from the base station until the handover indication is received on the downlink control channel.
A base station (800) comprising:

a transceiver (801) configured to transmit radio resource control RRC signaling to the user equipment UE, the RRC signaling including at least information about a non-anchor physical resource block PRB configured for the UE;

The configuration unit (803) is configured to configure the UE to switch from the anchor PRB back to the non-anchor PRB after performing media access control MAC random access on the anchor PRB to send unicast data and/or from the base station on the non-anchor PRB. The base station receives unicast data.
A base station (800) according to claim 36, wherein

The transceiver (801) is further configured to: send a signal to the UE to indicate that the UE switches from the anchor PRB back to the non-anchor PRB after the random access is successful to send unicast data to the base station on the non-anchor PRB and/or from the base station. a handover indication that the base station receives unicast data;

The configuration unit (803) is further configured to: configure the UE to perform handover from the anchor PRB to the non-anchor PRB after the random access is successful according to the received handover indication to send the unicast to the base station on the non-anchor PRB. Data and/or receiving unicast data from a base station.
A base station (800) according to claim 37, wherein

The handover indication is represented by a parameter included in RRC signaling from a base station.
The base station (800) according to any one of claims 36 to 38, wherein the RRC signaling is one of: an RRC Connection Setup message, an RRC Connection Reestablishment message, an RRC Connection Reconfiguration message, an RRC Connection Recovery message.
A base station (800) according to claim 37, wherein

The handover indication is represented by a medium access control control element MAC CE sent to the UE in a random access procedure.
A base station (800) according to claim 40, wherein

The MAC CE is transmitted in a random access conflict resolution message sent to the UE.
A base station (800) according to claim 40, wherein

The MAC CE is transmitted in a random access response message sent to the UE.
The base station (800) of claim 40 wherein said configuration unit (803) is further configured to:

After the random access performed by the UE on the anchor PRB is successfully configured, the UE continues to send unicast data to the base station on the anchor PRB and/or receive unicast data from the base station until the MAC CE is received.
A base station (800) according to claim 37, wherein

The handover indication is represented by a field of the Media Access Control Protocol Data Unit MAC PDU header.
A base station (800) according to claim 37, wherein

The handover indication is carried by a downlink control information DCI carried by a downlink control channel transmitted to the UE on the anchor PRB.
A base station (800) according to claim 45, wherein said configuration unit (803) is further configured to:

After the random access performed on the anchor PRB is successful, the configured UE continues to transmit unicast data to the base station on the anchor PRB and/or receive unicast data from the base station until the handover indication is received on the downlink control channel.