WO2016065580A1 - 小区间切换的方法、装置及系统 - Google Patents

小区间切换的方法、装置及系统 Download PDF

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Publication number
WO2016065580A1
WO2016065580A1 PCT/CN2014/089927 CN2014089927W WO2016065580A1 WO 2016065580 A1 WO2016065580 A1 WO 2016065580A1 CN 2014089927 W CN2014089927 W CN 2014089927W WO 2016065580 A1 WO2016065580 A1 WO 2016065580A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
switched
base station
information
handover
Prior art date
Application number
PCT/CN2014/089927
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English (en)
French (fr)
Inventor
王晓娜
唐小勇
李铕
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/089927 priority Critical patent/WO2016065580A1/zh
Priority to CN201910127585.6A priority patent/CN109819490B/zh
Priority to CN201480082296.4A priority patent/CN107079367B/zh
Publication of WO2016065580A1 publication Critical patent/WO2016065580A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point

Definitions

  • the embodiments of the present invention relate to communication technologies, and in particular, to a method, device, and system for inter-cell handover.
  • the signaling flow of the user equipment switching between the source cell and the target cell is: 1) the source base station sends a handover request message to the target base station; 2) the target base station returns a handover response message to the source base station; 3) if the target The cell allows the user equipment to perform the handover, and the handover response message includes the handover indication of the user equipment to the target cell, and the source base station forwards the handover indication to the user equipment. 4) the user equipment sends a random access request to the target base station according to the received handover indication.
  • the target base station returns a random access response message to the user equipment, where the random access response message includes a time advance (TA, Time Advance); wherein the TA is the target base station estimates according to the random access request message sent by the user equipment. Obtained; 6) the user equipment communicates with the target base station according to the TA.
  • TA time advance
  • the present invention provides a method, an apparatus, and a system for inter-cell handover, which are used to solve the problem of large air interface signaling overhead and handover delay when performing inter-cell handover in the prior art.
  • the present invention provides a method for inter-cell handover, including:
  • the target base station receives a handover request message sent by the source base station, where the handover request message includes status information of the user equipment to be switched;
  • the source base station is a serving base station of the source cell, and the target base station is a serving base station of the target cell;
  • the target base station Determining, by the target base station, the coordinated user equipment for assisting the user equipment to be switched to perform handover according to the state information of the user equipment to be switched, and according to the TA of the collaborative user equipment Determining a TA of the user equipment to be switched;
  • the target base station sends a handover response message to the source base station, where the handover response message includes the TA of the user equipment to be switched.
  • the status information is the mobile information of the user equipment to be switched; the mobile information The location information of the user equipment to be switched is currently included;
  • the target base station determines, according to the status information of the user equipment to be switched, the coordinated user equipment, which is used to assist the user equipment to be switched, for the handover, including:
  • the target base station determines, according to the current location information of the user equipment to be switched, that the user equipment that is less than the preset threshold with the user equipment to be switched is the coordinated user equipment of the user equipment to be switched.
  • the mobile information further includes location correction information, where the location correction information includes at least one of the following information Kind:
  • the target base station determines, according to the current location information of the user equipment to be switched, that the user equipment that is less than the preset threshold with the user equipment to be switched is the coordinated user of the user equipment to be switched.
  • Equipment including:
  • the target base station obtains the corrected location information of the to-be-switched user equipment according to the current location information of the to-be-switched user equipment and the location correction information, and the corrected location information according to the to-be-switched user equipment Determining that the user equipment that is less than the preset threshold between the user equipment to be switched is the coordinated user equipment of the user equipment to be switched.
  • the status information is device-to-device (D2D) information of the user equipment to be switched;
  • the D2D information includes: a D2D identifier of the user equipment to be switched, and first resource configuration information, where the first resource configuration information is used to indicate a communication resource occupied by the D2D signal of the user equipment to be switched;
  • the target base station determines, according to the status information of the user equipment to be switched, the coordinated user equipment, which is used to assist the user equipment to be switched, for the handover, including:
  • the target base station sends a D2D measurement indication message to the service user equipment in the target cell;
  • the D2D measurement indication message includes: a D2D identifier of the user equipment to be switched, and first resource configuration information;
  • the D2D measurement response message includes D2D signal quality information;
  • the D2D signal quality information is a D2D of the service user equipment according to the to-be-switched user equipment Determining D2D signal quality information between the service user equipment and the to-be-switched user equipment measured by the first resource configuration information;
  • the target base station determines that the serving user equipment with the best D2D signal quality is the coordinated user equipment of the user equipment to be switched.
  • the handover response message further includes: Transmitting, by the user equipment, the cell radio network in the target cell to temporarily identify the CRNTI and the second resource configuration information, where the second resource configuration information is used to indicate the initial uplink allocated by the target base station to the user equipment to be switched Authorized resource UL-Grant.
  • the present invention further provides a method for inter-cell handover, including:
  • the source base station sends a handover request message to the target base station, where the handover request message includes status information of the user equipment to be switched;
  • the source base station is a serving base station of the source cell, and the target base station is required to access the user equipment to be switched. a serving base station of the target cell;
  • the source base station receives the handover response message sent by the target base station, where the handover response message includes: a timing advance TA of the user equipment to be switched; wherein the TA of the user equipment to be switched is the target base station according to the target base station Determining, by the state information of the user equipment to be switched, the cooperative user equipment used to assist the user equipment to be switched to perform handover, and determining according to the TA of the collaborative user equipment;
  • the source base station sends a handover indication message to the to-be-switched user equipment, where the handover indication message includes the TA of the user equipment to be switched.
  • the method before the source base station sends the handover request message to the target base station, the method further includes:
  • the status information includes: mobile information of the user equipment to be switched or device-to-device D2D information.
  • the determining, by the source base station, status information of the user equipment to be switched includes:
  • the source base station acquires mobile information of the user equipment to be switched
  • the source base station allocates D2D information to the to-be-switched user equipment.
  • the mobile information includes: the user equipment to be switched is currently located in the first possible manner. Location information;
  • the D2D information includes: a D2D identifier of the user equipment to be switched, and first resource configuration information, where the first resource configuration information is used to indicate a communication resource occupied by a D2D signal of the user equipment to be switched.
  • the mobile information further includes location correction information, where the location correction information includes at least one of the following information Kind:
  • the moving speed, moving direction, and positional accuracy of the user equipment to be switched are the moving speed, moving direction, and positional accuracy of the user equipment to be switched.
  • the handover response message further includes: Transmitting, by the user equipment, the cell radio network in the target cell to temporarily identify the CRNTI and the second resource configuration information, where the second resource configuration information is used to indicate the initial uplink allocated by the target base station to the user equipment to be switched Authorized resource UL-Grant;
  • the handover indication message further includes: the CRNTI and the second resource configuration information.
  • the present invention provides a target base station, where the target base station is a serving base station of a target cell, and the target base station includes:
  • a receiving module configured to receive a handover request message sent by the source base station, where the handover request message packet is And including status information of the user equipment to be switched;
  • the source base station is a serving base station of the source cell;
  • a determining module configured to determine, according to the status information of the user equipment to be switched, a coordinated user equipment for assisting the user equipment to be switched to perform handover, and determining, according to the TA of the cooperative user equipment, the user equipment to be switched TA;
  • a sending module configured to send a handover response message to the source base station, where the handover response message includes a TA of the user equipment to be switched.
  • the determining module is specifically configured to: determine that a TA of the user equipment to be switched is equal to a TA of the collaborative user equipment; or The TA of the switching user equipment is equal to the sum of the TA and the offset value of the cooperative user equipment; wherein the offset value is determined according to a distance between the cooperative user equipment and the to-be-switched user equipment.
  • the status information is the mobile information of the user equipment to be switched; the mobile information The location information of the user equipment to be switched is currently included;
  • the determining module is configured to: determine, according to the current location information of the user equipment to be switched, that the user equipment that is less than the preset threshold with the user equipment to be switched is the to-be-switched A collaborative user device of a user device.
  • the mobile information further includes location correction information, where the location correction information includes at least one of the following information Kind:
  • the determining module is configured to: obtain the corrected location information of the user equipment to be switched according to the current location information of the user equipment to be switched and the location correction information, and according to the The user equipment that is modified by the user equipment is configured to determine that the user equipment that is less than the preset threshold is the coordinated user equipment of the user equipment to be switched.
  • the status information is device-to-device D2D information of the user equipment to be switched;
  • the D2D information includes: the user equipment to be switched a D2D identifier and a first resource configuration information, where the first resource configuration information is used to indicate a communication resource occupied by the D2D signal of the user equipment to be switched;
  • the determining module is specifically configured to:
  • the D2D measurement indication message includes: a D2D identifier of the user equipment to be switched, and first resource configuration information;
  • the D2D measurement response message includes D2D signal quality information;
  • the D2D signal quality information is a D2D identifier of the user equipment according to the to-be-switched user equipment, and the first D2D signal quality information between the service user equipment and the to-be-switched user equipment measured by the resource configuration information;
  • the service user equipment that determines the best D2D signal quality is the coordinated user equipment of the user equipment to be switched.
  • the handover response message further includes: Transmitting, by the user equipment, the cell radio network in the target cell to temporarily identify the CRNTI and the second resource configuration information, where the second resource configuration information is used to indicate the initial uplink allocated by the target base station to the user equipment to be switched Authorized resource UL-Grant.
  • the present invention provides a source base station, where the source base station is a serving base station of a source cell, and the source base station includes:
  • a handover request sending module configured to send a handover request message to the target base station, where the handover request message includes status information of the user equipment to be switched;
  • the target base station is a serving base station of a target cell to be switched by the user equipment to be switched ;
  • a receiving module configured to receive a handover response message sent by the target base station, where the handover response message includes: a timing advance TA of the user equipment to be switched; wherein, the TA of the user equipment to be switched is the target base station Determining, according to the state information of the user equipment to be switched, a coordinated user equipment for assisting the to-be-switched user equipment to perform handover, and determining according to the TA of the collaborative user equipment;
  • the handover indication sending module is configured to send a handover indication message to the to-be-switched user equipment, where the handover indication message includes the TA of the user equipment to be switched.
  • the method further includes:
  • a determining module configured to determine status information of the user equipment to be switched; wherein the status information includes: mobile information of the user equipment to be switched or device-to-device D2D information.
  • the second possible implementation in the fourth aspect In the manner of the determining module, specifically for:
  • the D2D information is allocated to the user equipment to be switched.
  • the mobile information includes: the user equipment to be switched is currently located Location information;
  • the D2D information includes: a D2D identifier of the user equipment to be switched, and first resource configuration information, where the first resource configuration information is used to indicate a communication resource occupied by a D2D signal of the user equipment to be switched.
  • the mobile information further includes location correction information, where the location correction information includes at least one of the following information Kind:
  • the moving speed, moving direction, and positional accuracy of the user equipment to be switched are the moving speed, moving direction, and positional accuracy of the user equipment to be switched.
  • the handover response message further includes: Transmitting, by the user equipment, the cell radio network in the target cell to temporarily identify the CRNTI and the second resource configuration information, where the second resource configuration information is used to indicate the initial uplink allocated by the target base station to the user equipment to be switched Authorized resource UL-Grant;
  • the handover indication message further includes: the CRNTI and the second resource configuration information.
  • the present invention provides a system for inter-cell handover, comprising: a base station in a third aspect, a first to a fifth possible implementation manner of the third aspect, and a fourth aspect, the first aspect of the fourth aspect To the base station in any of the fifth possible ways.
  • the present invention provides a method, a device, and a system for inter-cell handover.
  • the target base station determines, according to the state information of the user equipment to be switched sent by the source base station, the coordinated user equipment for assisting the user equipment to be switched, and according to
  • the TA of the cooperative user equipment determines the TA of the user equipment to be switched, and sends a handover response message of the TA including the user equipment to be switched to the source base station, so that the source base station sends the TA of the user equipment to be handed over to the TA through the handover indication message.
  • the user equipment to be switched avoids the random access process of the user equipment to be switched during the handover process, thereby reducing the space Port signaling overhead and reduced handover delay.
  • FIG. 1 is a schematic diagram of an application scenario of a method for inter-cell handover according to the present invention
  • Embodiment 1 is a flowchart of Embodiment 1 of a method for inter-cell handover according to the present invention
  • Embodiment 3 is a flowchart of Embodiment 2 of a method for inter-cell handover according to the present invention
  • Embodiment 4 is a flowchart of Embodiment 3 of a method for inter-cell handover according to the present invention.
  • FIG. 5 is a flowchart of Embodiment 4 of a method for inter-cell handover according to the present invention.
  • Embodiment 5 is a flowchart of Embodiment 5 of a method for inter-cell handover according to the present invention.
  • Embodiment 6 is a flowchart of Embodiment 6 of a method for inter-cell handover according to the present invention.
  • Embodiment 8 is a flowchart of Embodiment 7 of a method for inter-cell handover according to the present invention.
  • Embodiment 9 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
  • Embodiment 4 of a base station according to the present invention is a schematic structural diagram of Embodiment 4 of a base station according to the present invention.
  • Embodiment 5 of a base station according to the present invention is a schematic structural diagram of Embodiment 5 of a base station according to the present invention.
  • Embodiment 6 of a base station is a schematic structural diagram of Embodiment 6 of a base station according to the present invention.
  • FIG. 13 is a schematic structural diagram of Embodiment 9 of a base station according to the present invention.
  • FIG. 14 is a schematic structural diagram of Embodiment 10 of a base station according to the present invention.
  • FIG. 1 is a schematic diagram of an application scenario of a method for inter-cell handover according to the present invention
  • a user equipment 13 in a wireless communication network, a user equipment 13 resides in a source cell 11 when the user equipment 13 is in a direction indicated by a dotted arrow in FIG.
  • the user equipment 13 needs to perform the slave source cell 11 Inter-cell handover to the target cell 12.
  • the user equipment 13 after receiving the handover indication message sent by the serving base station of the source cell 11, the user equipment 13 needs to send a random access request message to the serving base station of the target cell 12, so that the serving base station of the target cell 12 can
  • the access request message estimates the TA of the user equipment 13, and sends the TA to the user equipment 13 through the random access response message; therefore, when performing inter-cell handover, there is a problem of large air interface signaling overhead and handover delay.
  • the serving base station of the source cell and the target cell of the present invention may be the same or different; that is, in the present invention, the source base station and the target base station may be the same base station or different base stations.
  • FIG. 2 is a flowchart of Embodiment 1 of a method for inter-cell handover according to the present invention. As shown in FIG. 2, the method in this embodiment may include:
  • Step 201 The target base station receives a handover request message sent by the source base station, where the handover request message includes status information of the user equipment to be switched; the source base station is a serving base station of the source cell, and the target base station is a serving base station of the target cell;
  • Step 202 The target base station determines, according to the state information of the user equipment to be switched, a coordinated user equipment that is used to assist the user equipment to be switched, and determines the user to be switched according to the TA of the collaborative user equipment.
  • Equipment TA Equipment TA
  • Step 203 The target base station sends a handover response message to the source base station, where the handover response message includes the TA of the user equipment to be switched.
  • the target base station estimates the TA of the user equipment to be switched according to the random access request message sent by the user equipment to be switched, and sends the TA to the PA through the random access response message.
  • Switch user equipment the target base station determines, according to the state information of the user equipment to be switched sent by the source base station, the coordinated user equipment for assisting the switching user equipment to perform handover, and determines the to-be-switched according to the TA of the coordinated user equipment.
  • the TA of the user equipment sends a handover response message of the TA including the user equipment to be switched to the source base station, so that the source base station sends the TA of the user equipment to be switched to the user equipment to be switched through the handover indication message.
  • the target base station needs to estimate the TA of the user equipment to be switched according to the random access request message sent by the user equipment to be switched, and sends the TA to the user equipment to be switched through the random access response message;
  • the switching user equipment sends a random access request to the target base station, and the target base station returns a random access response message (that is, a random access procedure) of the TA including the to-be-switched user equipment to the user equipment to be switched, the user equipment to be switched
  • the TA value that should be used when the station communicates therefore, there is a problem of large air interface signaling overhead and handover delay.
  • the target base station determines, according to the state information of the user equipment to be switched sent by the source base station, the coordinated user equipment for assisting the switching of the user equipment to be switched, and determines the to-be-switched according to the TA of the coordinated user equipment.
  • the TA of the user equipment sends a handover response message of the TA including the user equipment to be switched to the source base station, so that the source base station sends the TA of the user equipment to be switched to the user equipment to be switched through the handover indication message, thereby avoiding the user equipment to be switched.
  • the random access procedure in the handover process thereby reducing the air interface signaling overhead and reducing the handover delay.
  • the target base station determines, according to the state information of the user equipment to be switched that is sent by the source base station, the coordinated user equipment that is used to assist the user equipment to be switched, and determines according to the TA of the coordinated user equipment.
  • the TA of the user equipment to be switched transmits a handover response message of the TA including the user equipment to be switched to the source base station, so that the source base station sends the TA of the user equipment to be switched to the user equipment to be switched through the handover indication message, thereby avoiding the to-be-switched
  • the random access procedure of the user equipment in the handover process thereby reducing the air interface signaling overhead and reducing the handover delay.
  • FIG. 3 is a flowchart of Embodiment 2 of a method for inter-cell handover according to the present invention. As shown in FIG. 3, the method in this embodiment may include:
  • Step 301 The target base station receives a handover request message sent by the source base station, where the handover request message includes mobile information of the user equipment to be switched; the mobile information includes: location information of the user equipment to be switched currently; the source The base station is a serving base station of the source cell, and the target base station is a serving base station of the target cell;
  • Step 302 The target base station determines, according to the mobile information of the user equipment to be switched, that the user equipment that is less than the preset threshold with the user equipment to be switched is the coordinated user equipment of the user equipment to be switched;
  • the target base station may obtain the current location information of the serving user equipment by sending a location information request to the serving user equipment in the target cell; the target base station is further determined according to the current location of the serving user equipment.
  • the information and the location information of the user equipment to be switched are determined, and the user equipment whose distance from the user equipment to be switched is less than a preset threshold is determined.
  • the service user equipment may be all service user equipments in the target cell, or may be service user equipments in the same direction and in the same direction as the user equipment to be switched.
  • the location information of the user equipment to be switched and the current location of the service user equipment may be represented by latitude and longitude, and the distance between the user equipment to be switched and the service user equipment may be calculated by latitude and longitude.
  • the target base station may send a location information request to the service user equipment.
  • the service user equipment After receiving the location information request, the service user equipment obtains the latitude and longitude information that is currently located by the Global Positioning System (GPS), and passes the location.
  • GPS Global Positioning System
  • the information response message transmits the latitude and longitude information currently in which the service user equipment is located to the target base station.
  • the target base station may also estimate a relative location between the serving user equipment and the target base station; for example, using the target base station as a reference point, and sandwiching between the serving user equipment and the target base station. Angle, distance or coordinate representation.
  • the mobile information may further include location correction information, where the location correction information includes at least one of the following information:
  • the target base station may obtain the corrected location information of the to-be-switched user equipment according to the current location information of the to-be-switched user equipment and the location correction information, and according to the to-be-switched user
  • the device-corrected location information determines that the user equipment that is less than the preset threshold between the user equipment to be switched is the collaborative user equipment of the user equipment to be switched.
  • the target base station determines that the distance between the user equipment and the user equipment to be switched is less than a preset threshold
  • the distance between the user equipment and the user equipment to be switched may be The smallest user equipment serves as the collaborative user equipment of the user equipment to be switched.
  • Step 303 The target base station determines, according to the TA of the coordinated user equipment, the TA of the user equipment to be switched;
  • the target base station first obtains the TA of the cooperative user equipment by using a measurement, and then determines the TA of the user equipment to be switched according to the TA of the coordinated user equipment.
  • the target base station determines, according to the TA of the coordinated user equipment, the TA of the user equipment to be switched, including:
  • Determining, by the target base station, that the TA of the user equipment to be switched is equal to the TA of the cooperative user equipment;
  • the target base station Determining, by the target base station, that the TA of the to-be-switched user equipment is equal to a sum of the TA and the offset value of the coordinated user equipment, where the offset value is used according to the coordinated user equipment and the to-be-switched The distance between the household devices is determined.
  • an offset value is equal to a distance between the collaborative user equipment and the user to be switched. Divide by the transmission speed of electromagnetic waves in the air (3*10 ⁇ 8m/s).
  • Step 304 The target base station sends a handover response message to the source base station, where the handover response message includes the TA of the user equipment to be switched.
  • the handover response message may further include: a Cell Radio Network Temporary Identify (CRNTI) and a second resource configuration information of the to-be-switched user equipment in the target cell;
  • the second resource configuration information is used to indicate an initial uplink grant resource (UL-Grant) allocated by the target base station to the user equipment to be switched.
  • the source base station can send the CRNTI and the second resource configuration information by using the handover indication message after receiving the handover response message.
  • the user equipment to be switched is configured to obtain the CRNTI and the second resource configuration information in the target cell after receiving the handover indication message, and can perform the CRNTI and the second resource configuration information with the target base station according to the CRNTI and the second resource configuration information. Communication further reduces switching delays.
  • the target user base station determines, according to the mobile information of the user equipment to be switched that is sent by the source base station, that the user equipment that is less than the preset threshold with the user equipment to be switched is the coordinated user of the user equipment to be switched. Determining, by the TA of the coordinated user equipment, the TA of the user equipment to be switched, and transmitting, by the source base station, a handover response message of the TA including the user equipment to be switched, so that the source base station switches the TA of the user equipment to be switched.
  • the indication message is sent to the user equipment to be switched, and the random access procedure of the user equipment to be switched in the handover process is avoided, thereby reducing the air interface signaling overhead and reducing the handover delay.
  • Embodiment 3 is a flowchart of Embodiment 3 of a method for inter-cell handover according to the present invention. As shown in FIG. 4, the method in this embodiment may include:
  • Step 401 The target base station receives a handover request message sent by the source base station, where the handover request message includes D2D information of the user equipment to be switched, and the D2D information includes: a D2D identifier of the user equipment to be switched, and first resource configuration information.
  • the first resource configuration information is used to indicate a communication resource occupied by a D2D signal of the user equipment to be switched;
  • the source base station is a serving base station of a source cell
  • the target base station is a serving base station of a target cell;
  • Step 402 The target base station sends a D2D measurement indication message to a service user equipment in the target cell, where the D2D measurement indication message includes: a D2D identifier of the user equipment to be switched, and first resource configuration information;
  • the service user equipment may be all service user equipments in the target cell, or may be service user equipments in the same direction and in the same direction as the user equipment to be switched.
  • the D2D measurement indication message may further include: a measurement time, a measurement result report format, and the like.
  • Step 403 The target base station receives a D2D measurement response message sent by the service user equipment, where the D2D measurement response message includes D2D signal quality information, and the D2D signal quality information is used by the serving user equipment according to the to-be-switched user. D2D signal quality information between the service user equipment and the to-be-switched user equipment measured by the D2D identifier of the device and the first resource configuration information;
  • Step 404 The target base station determines that the service user equipment with the best D2D signal quality is the coordinated user equipment of the user equipment to be switched.
  • Step 405 The target base station determines, according to the TA of the coordinated user equipment, the TA of the user equipment to be switched;
  • the target base station first obtains the TA of the cooperative user equipment by using a measurement, and then determines the TA of the user equipment to be switched according to the TA of the coordinated user equipment.
  • the target base station may determine that the TA of the to-be-switched user equipment is equal to the TA of the coordinated user equipment.
  • Step 406 The target base station sends a handover response message to the source base station, where the handover response message includes the TA of the user equipment to be switched.
  • the handover response message may further include: a CRNTI and a second resource configuration information of the to-be-switched user equipment in the target cell, where the second resource configuration information is used to indicate the The initial uplink grant resource (UL-Grant) allocated by the target base station to the user equipment to be switched.
  • the source base station can send the CRNTI and the second resource configuration information by using the handover indication message after receiving the handover response message.
  • the CRNTI and the second resource configuration information can communicate with the target base station according to the CRNTI and the second resource configuration information, thereby further reducing the handover delay.
  • the target user base station determines, according to the D2D information of the user equipment to be switched sent by the source base station, that the service user equipment with the best D2D signal quality between the user equipment to be switched is the coordinated user of the user equipment to be switched. Determining, by the TA of the coordinated user equipment, the TA of the user equipment to be switched, and transmitting, by the source base station, a handover response message of the TA including the user equipment to be switched, so that the source base station switches the TA of the user equipment to be switched.
  • the indication message is sent to the user equipment to be switched, and the random access procedure of the user equipment to be switched in the handover process is avoided, thereby reducing the air interface signaling overhead and reducing the handover delay.
  • FIG. 5 is a flowchart of Embodiment 4 of a method for inter-cell handover according to the present invention. As shown in FIG. 5, the method in this embodiment may include:
  • Step 501 The source base station sends a handover request message to the target base station, where the handover request message includes status information of the user equipment to be switched; the source base station is a serving base station of the source cell, and the target base station is a user equipment to be switched. a serving base station of a target cell to be accessed;
  • Step 502 The source base station receives a handover response message sent by the target base station, where the handover response message includes: a timing advance TA of the user equipment to be switched; wherein the TA of the user equipment to be switched is the Determining, by the target base station, the coordinated user equipment for assisting the to-be-switched user equipment to perform handover according to the status information of the user equipment to be switched, and determining according to the TA of the coordinated user equipment;
  • Step 503 The source base station sends a handover indication message to the to-be-switched user equipment, where the handover indication message includes the TA of the user equipment to be switched.
  • the source base station after receiving the handover response message including the handover indication sent by the target base station, the source base station sends a handover indication message to the user equipment to be switched, so that the user equipment to be switched can be directed to the target base station according to the received handover indication.
  • the target base station estimates the TA of the to-be-switched user equipment according to the random access request message, and the target base station sends the TA to the to-be-switched user equipment by using a random access response message.
  • the source base station sends a handover request message including the status information of the user equipment to be switched to the target base station, so that the target base station determines, according to the state information of the user equipment to be switched, the assistance for the user equipment to be switched.
  • a cooperative user equipment that performs handover, and determines a TA of the user equipment to be switched according to the TA of the cooperative user equipment; and the source base station receives, by the target base station, the user equipment that is to be switched
  • the handover response message of the TA is sent to the user equipment to be switched by the handover indication message.
  • the source base station after the source base station receives the handover response message that includes the handover indication sent by the target base station, the source base station sends a handover indication message to the user equipment to be switched, so that the user equipment to be switched can be directed to the target base station according to the received handover indication.
  • the target base station estimates the TA of the user equipment to be switched according to the random access request message, and the target base station sends the TA to the user equipment to be switched through a random access response message; After the user equipment to be switched sends a random access request to the target base station, and the target base station returns a random access response message (that is, a random access procedure) of the TA including the user equipment to be switched to the user equipment to be switched, the user to be switched
  • the device can obtain the TA value that should be used when communicating with the target base station; therefore, there is a problem of large air interface signaling overhead and handover delay.
  • the source base station sends a handover request message including the status information of the user equipment to be switched to the target base station, so that the target base station determines, according to the status information of the user equipment to be switched, the assistance for the user to be switched.
  • the device performs the handover of the coordinated user equipment, and determines the TA of the to-be-switched user equipment according to the TA of the coordinated user equipment; the source base station receives the handover response message of the TA that is sent by the target base station, including the to-be-switched user equipment, and passes the The handover indication message sends the TA of the user equipment to be switched to the user equipment to be switched; the random access procedure of the user equipment to be switched during the handover process is avoided, thereby reducing the air interface signaling overhead and reducing the handover delay.
  • FIG. 6 is a flowchart of Embodiment 5 of a method for inter-cell handover according to the present invention. As shown in FIG. 6, the method in this embodiment may include:
  • Step 601 The source base station determines, according to the measurement information of the user equipment, that the user equipment is a target cell that the user equipment to be switched and the user equipment to be switched need to access; the source base station is a serving base station of the source cell;
  • Step 602 The source base station determines whether the mobile information of the user equipment to be switched can be obtained.
  • step 603 If yes, go to step 603; otherwise, go to step 606;
  • Step 603 The source base station acquires the mobile information of the user equipment to be switched; the mobile information includes: location information that the user equipment to be switched is currently located;
  • the mobile information may further include location correction information, where the location correction information includes at least one of the following information:
  • the moving speed, moving direction, and positional accuracy of the user equipment to be switched are the moving speed, moving direction, and positional accuracy of the user equipment to be switched.
  • Step 604 The source base station sends a handover request message to the target base station, where the handover request message includes the mobile information of the user equipment to be switched; the target base station is a serving base station of the target cell;
  • Step 605 The source base station receives the handover response message sent by the target base station, where the handover response message includes: the TA of the user equipment to be switched; wherein the TA of the user equipment to be switched is the target base station according to the target base station. Determining, by the TA of the coordinated user equipment, the coordinated user equipment that is used to assist the user equipment to be switched, and the mobility information of the user equipment to be switched;
  • step 605 is performed, step 609 is performed.
  • Step 606 The source base station allocates D2D information to the user equipment to be switched.
  • the D2D information includes: a D2D identifier of the user equipment to be switched, and first resource configuration information, where the first resource configuration information is used to indicate The communication resource occupied by the D2D signal of the user equipment to be switched.
  • Step 607 The source base station sends a handover request message to the target base station, where the handover request message includes D2D information of the user equipment to be switched, and the target base station is a serving base station of the target cell.
  • Step 608 The source base station receives the handover response message sent by the target base station, where the handover response message includes: the TA of the user equipment to be switched; wherein the TA of the user equipment to be switched is the target base station according to the target base station.
  • the D2D information of the user equipment to be switched is determined, and the coordinated user equipment for assisting the switching of the user equipment to be switched is determined, and determined according to the TA of the collaborative user equipment;
  • Step 609 The source base station sends a handover indication message to the to-be-switched user equipment, where the handover indication message includes the TA of the user equipment to be switched.
  • the handover response message may further include: the cell radio network in the target cell that the to-be-switched user equipment temporarily identifies the CRNTI and the second resource configuration information; wherein the second resource configuration information is used to indicate the An initial uplink grant resource (UL-Grant) allocated by the target base station to the user equipment to be switched;
  • the cell radio network in the target cell that the to-be-switched user equipment temporarily identifies the CRNTI and the second resource configuration information
  • the second resource configuration information is used to indicate the An initial uplink grant resource (UL-Grant) allocated by the target base station to the user equipment to be switched
  • the handover indication message may further include: the CRNTI and the second resource configuration information.
  • the handover indication message After the handover indication message carries the CRNTI and the second resource configuration information of the user equipment to be switched in the target cell, the user equipment to be switched after receiving the handover indication message
  • the CRNTI and the second resource configuration information under the target cell can be obtained, and the CRNTI and the second resource configuration information can be used to communicate with the target base station, thereby further reducing the handover delay.
  • the source base station sends a handover request message including the mobile information or the D2D information of the user equipment to be switched to the target base station, so that the target base station determines, according to the mobile information or the D2D information of the user equipment to be switched.
  • a cooperative user equipment that assists the user equipment to be switched to perform handover, and determines a TA of the user equipment to be switched according to the TA of the cooperative user equipment; and the source base station receives a TA that is sent by the target base station and includes the user equipment to be switched.
  • FIG. 7 is a flowchart of Embodiment 6 of a method for inter-cell handover according to the present invention. As shown in FIG. 7, the method in this embodiment may include:
  • Step 701 The source base station sends a handover request message to the target base station, where the handover request message includes the mobile information of the user equipment to be switched, and the mobile information includes: location information of the user equipment to be switched currently located;
  • the source base station is a serving base station of the source cell
  • the target base station is a serving base station of a target cell to be switched by the user equipment to be switched;
  • step 701 is the same as step 603, and details are not described herein again.
  • Step 702 The target base station sends a location information request message to a service user equipment in the target cell, to obtain location information that the service user equipment is currently located.
  • Step 703 The target base station receives a location information report message sent by the service user equipment, where the location information report message includes location information that the service user equipment is currently located.
  • Step 704 The target base station determines, according to the current location information of the serving user equipment and the current location information of the user equipment to be switched, that the distance between the user equipment to be switched is less than a preset threshold.
  • the user equipment is the coordinated user equipment of the user equipment to be switched; and the TA of the user equipment to be switched is determined according to the TA of the cooperative user equipment;
  • step 704 is the same as step 302 and step 303, and details are not described herein again.
  • the target base station sends the location information request message to only one serving user equipment.
  • the target base station can send the location information request to one or more service user equipments.
  • Step 705 The target base station sends a handover response message to the source base station, where the handover response is The message includes the TA of the user equipment to be switched;
  • step 705 is the same as step 304, and details are not described herein again.
  • Step 706 After receiving the handover response message sent by the target base station, the source base station sends a handover indication message to the to-be-switched user equipment, where the handover indication message includes the TA of the user equipment to be switched;
  • step 706 is the same as step 609, and details are not described herein again.
  • Step 707 The to-be-switched user equipment performs data transmission with the target base station by using the TA included in the handover indication message.
  • FIG. 8 is a flowchart of Embodiment 7 of a method for inter-cell handover according to the present invention. As shown in FIG. 8, the method in this embodiment may include:
  • Step 801 The source base station sends a handover request message to the target base station, where the handover request message includes D2D information of the user equipment to be switched, and the D2D information includes: a D2D identifier of the user equipment to be switched and a first resource configuration information.
  • the first resource configuration information is used to indicate a communication resource occupied by the D2D signal of the user equipment to be switched;
  • the source base station is a serving base station of the source cell, and the target base station is required to be accessed by the user equipment to be switched. a serving base station of the target cell;
  • step 801 is the same as step 606, and details are not described herein again.
  • Step 802 The target base station sends a D2D measurement indication message to the service user equipment in the target cell.
  • the D2D measurement indication message includes: a D2D identifier of the user equipment to be switched, and first resource configuration information.
  • step 802 is the same as step 402, and details are not described herein again.
  • Step 803 The target base station receives a D2D measurement response message sent by the service user equipment, where the D2D measurement response message includes D2D signal quality information, and the D2D signal quality information is used by the serving user equipment according to the to-be-switched user. D2D signal quality information between the service user equipment and the to-be-switched user equipment measured by the D2D identifier of the device and the first resource configuration information;
  • step 802 is the same as step 403, and details are not described herein again.
  • Step 804 the target base station determines that the service user equipment with the best D2D signal quality is the coordinated user equipment of the user equipment to be switched; and determines the TA of the user equipment to be switched according to the TA of the cooperative user equipment;
  • step 804 is the same as step 404 and step 405, and details are not described herein again.
  • the target base station sends the location information request message to only one serving user equipment is shown in FIG. 8; those skilled in the art should be aware that the target base station can send the location information request to one or more service user equipments.
  • Step 805 The target base station sends a handover response message to the source base station, where the handover response message includes the TA of the user equipment to be switched;
  • step 805 is the same as step 705, and details are not described herein again.
  • Step 806 After receiving the handover response message sent by the target base station, the source base station sends a handover indication message to the user equipment to be switched, where the handover indication message includes the TA of the user equipment to be switched;
  • step 806 is the same as step 706, and details are not described herein again.
  • Step 807 The to-be-switched user equipment performs data transmission with the target base station by using the TA included in the handover indication message.
  • step 807 is the same as step 707, and details are not described herein again.
  • FIG. 9 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
  • the base station in this embodiment may include: a receiving module 901, a determining module 902, and a sending module 903.
  • the receiving module 901 is configured to receive a handover request message sent by the source base station, where the handover request message includes status information of the user equipment to be switched;
  • the source base station is a serving base station of the source cell;
  • the determining module 902 is configured to Determining the status information of the user equipment to be switched, determining the coordinated user equipment for assisting the user equipment to be switched, and determining the TA of the user equipment to be switched according to the TA of the cooperation user equipment; And sending a handover response message to the source base station, where the handover response message includes a TA of the user equipment to be switched.
  • the base station in this embodiment is a serving base station of the target cell, and can be used to implement the technical solution of the method embodiment shown in FIG. 2, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the determining module 902 is specifically configured to:
  • Determining that the TA of the user equipment to be switched is equal to the sum of the TA and the offset value of the coordinated user equipment; wherein the offset value is determined according to a distance between the coordinated user equipment and the user equipment to be switched.
  • the status information may be mobile information of the user equipment to be switched;
  • the action information includes: the location information of the user equipment to be switched that is currently located; the determining module 902 is specifically configured to: determine, according to the current location information of the user equipment to be switched, between the user equipment to be switched The user equipment whose distance is less than the preset threshold is the coordinated user equipment of the user equipment to be switched.
  • the mobile information may further include location correction information, where the location correction information includes at least one of: a moving speed, a moving direction, and a location accuracy of the user equipment to be switched; and a determining module 902, Specifically, the method is: obtaining the corrected location information of the to-be-switched user equipment according to the current location information of the user equipment to be switched, and the location correction information, and correcting the location information according to the to-be-switched user equipment. Determining that the user equipment that is less than the preset threshold between the user equipment to be switched is the coordinated user equipment of the user equipment to be switched.
  • the base station in this embodiment is a serving base station of the target cell, and can be used to implement the technical solution of the method embodiment shown in FIG. 3, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the status information may be D2D information of the user equipment to be switched; the D2D information includes: a D2D identifier of the user equipment to be switched, and first resource configuration information.
  • the first resource configuration information is used to indicate the communication resource occupied by the D2D signal of the user equipment to be switched; the determining module 902 is specifically configured to: send a D2D measurement indication message to the service user equipment in the target cell;
  • the D2D measurement indication message includes: a D2D identifier of the to-be-switched user equipment and first resource configuration information; and a D2D measurement response message sent by the service user equipment;
  • the D2D measurement response message includes D2D signal quality information;
  • the D2D signal quality information is D2D signal quality information between the service user equipment and the to-be-switched user equipment measured by the serving user equipment according to the D2D identifier of the to-be-switched user equipment and the first resource configuration information.
  • the handover response message may further include: the cell radio network in the target cell that the to-be-switched user equipment temporarily identifies the CRNTI and the second resource configuration information; wherein, the second resource configuration information is used by And indicating an initial uplink grant resource (UL-Grant) allocated by the target base station to the to-be-switched user equipment.
  • the cell radio network in the target cell that the to-be-switched user equipment temporarily identifies the CRNTI and the second resource configuration information
  • the second resource configuration information is used by And indicating an initial uplink grant resource (UL-Grant) allocated by the target base station to the to-be-switched user equipment.
  • the base station in this embodiment is a serving base station of the target cell, and can be used to implement the technical solution of the method embodiment shown in FIG. 4, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 10 is a schematic structural diagram of Embodiment 4 of a base station according to the present invention.
  • the base station in this embodiment may include: a handover request sending module 1001, a receiving module 1002, and a handover indication sending module 1003.
  • the handover request sending module 1001 is configured to send a handover request message to the target base station, where the handover request message includes status information of the user equipment to be switched; and the target base station is a target cell that the user equipment to be switched needs to access.
  • the receiving base station is configured to receive the handover response message sent by the target base station, where the handover response message includes: a timing advance TA of the user equipment to be switched; wherein the TA of the user equipment to be switched Determining, by the target base station, the coordinated user equipment for assisting the to-be-switched user equipment to perform handover according to the status information of the user equipment to be switched, and determining according to the TA of the coordinated user equipment; the handover indication sending module 1003 And sending, to the user equipment to be switched, a handover indication message, where the handover indication message includes a TA of the user equipment to be switched.
  • the base station in this embodiment is a serving base station of the source cell, and can be used to implement the technical solution of the method embodiment shown in FIG. 5, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 11 is a schematic structural diagram of Embodiment 5 of a base station according to the present invention.
  • the base station of the present embodiment further includes: a determining module 1004, the determining module 1004, based on the structure of the base station shown in FIG. And determining the status information of the user equipment to be switched; wherein the status information includes: mobile information of the user equipment to be switched or device-to-device D2D information.
  • the determining module 1004 is specifically configured to: determine whether the mobile information of the user equipment to be switched can be obtained; if yes, obtain the mobile information of the user equipment to be switched; otherwise, allocate the user equipment to be switched D2D information.
  • the mobile information includes: the location information of the user equipment to be switched, the D2D information, the D2D identifier of the user equipment to be switched, and the first resource configuration information, the first resource.
  • the configuration information is used to indicate a communication resource occupied by the D2D signal of the user equipment to be switched.
  • the mobile information may further include location correction information, where the location correction information includes at least one of the following information:
  • the moving speed, moving direction, and positional accuracy of the user equipment to be switched are the moving speed, moving direction, and positional accuracy of the user equipment to be switched.
  • the handover response message may further include: the cell radio network in the target cell that the to-be-switched user equipment temporarily identifies the CRNTI and the second resource configuration information; wherein, the second resource configuration information is used by Instructing the target base station to allocate to the user equipment to be switched
  • the initial uplink grant resource (UL-Grant) correspondingly, the handover indication message may further include: the CRNTI and the second resource configuration information.
  • the base station in this embodiment is a serving base station of the source cell, and can be used to implement the technical solution of the method embodiment shown in FIG. 6.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 12 is a schematic structural diagram of Embodiment 6 of a base station according to the present invention.
  • the base station in this embodiment may include: a receiver 1201, a processor 1202, and a transmitter 1203.
  • the receiver 1201 is configured to receive a handover request message sent by the source base station, where the handover request message includes status information of the user equipment to be switched;
  • the source base station is a serving base station of the source cell;
  • the processor 1202 is configured to Determining the status information of the user equipment to be switched, determining the cooperative user equipment for assisting the user equipment to be switched, and determining the TA of the user equipment to be switched according to the TA of the cooperation user equipment; And sending a handover response message to the source base station, where the handover response message includes a TA of the user equipment to be switched.
  • the base station in this embodiment is a serving base station of the target cell, and can be used to implement the technical solution of the method embodiment shown in FIG. 2, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the processor 1202 is specifically configured to:
  • Determining that the TA of the user equipment to be switched is equal to the sum of the TA and the offset value of the coordinated user equipment; wherein the offset value is determined according to a distance between the coordinated user equipment and the user equipment to be switched.
  • the status information may be the mobile information of the user equipment to be switched; the mobile information includes: the location information of the user equipment to be switched, and the processor 1202, specifically, according to the And determining, by the user equipment that the user equipment is to be switched, the user equipment that is less than the preset threshold, and the user equipment that is to be switched, is the coordinated user equipment of the user equipment to be switched.
  • the mobile information may further include location correction information, where the location correction information includes at least one of: a moving speed, a moving direction, and a location accuracy of the user equipment to be switched; and a processor 1202, Specifically, the method is: obtaining the corrected location information of the to-be-switched user equipment according to the current location information of the user equipment to be switched, and the location correction information, and correcting the location information according to the to-be-switched user equipment. Determining with the user equipment to be switched The user equipment whose distance is less than the preset threshold is the coordinated user equipment of the user equipment to be switched.
  • the base station in this embodiment is a serving base station of the target cell, and can be used to implement the technical solution of the method embodiment shown in FIG. 3, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the status information may be D2D information of the user equipment to be switched; the D2D information includes: a D2D identifier of the user equipment to be switched, and first resource configuration information.
  • the first resource configuration information is used to indicate the communication resource occupied by the D2D signal of the user equipment to be switched; the processor 1202 is specifically configured to: send a D2D measurement indication message to the service user equipment in the target cell;
  • the D2D measurement indication message includes: a D2D identifier of the to-be-switched user equipment and first resource configuration information; and a D2D measurement response message sent by the service user equipment;
  • the D2D measurement response message includes D2D signal quality information;
  • the D2D signal quality information is D2D signal quality information between the service user equipment and the to-be-switched user equipment measured by the serving user equipment according to the D2D identifier of the to-be-switched user equipment and the first resource configuration information.
  • the handover response message may further include: the cell radio network in the target cell that the to-be-switched user equipment temporarily identifies the CRNTI and the second resource configuration information; wherein, the second resource configuration information is used by And indicating an initial uplink grant resource (UL-Grant) allocated by the target base station to the to-be-switched user equipment.
  • the cell radio network in the target cell that the to-be-switched user equipment temporarily identifies the CRNTI and the second resource configuration information
  • the second resource configuration information is used by And indicating an initial uplink grant resource (UL-Grant) allocated by the target base station to the to-be-switched user equipment.
  • the base station in this embodiment is a serving base station of the target cell, and can be used to implement the technical solution of the method embodiment shown in FIG. 4, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 13 is a schematic structural diagram of Embodiment 9 of a base station according to the present invention.
  • the base station in this embodiment may include: a transmitter 1301 and a receiver 1302.
  • the transmitter 1301 is configured to send a handover request message to the target base station, where the handover request message includes status information of the user equipment to be switched, and the target base station is a service of a target cell to be switched by the user equipment to be switched.
  • a base station configured to receive a handover response message sent by the target base station, where the handover response message includes: a timing advance TA of the user equipment to be switched; wherein the TA of the user equipment to be switched is a Determining, according to the state information of the user equipment to be switched, the coordinated user equipment for assisting the to-be-switched user equipment to perform handover, and determining, according to the TA of the coordinated user equipment, the transmitter 1301 is further configured to: Sending a handover indication message to the user equipment to be switched, The handover indication message includes a TA of the user equipment to be switched.
  • the base station in this embodiment is a serving base station of the source cell, and can be used to implement the technical solution of the method embodiment shown in FIG. 5, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 14 is a schematic structural diagram of a tenth embodiment of a base station according to the present invention.
  • the base station of the present embodiment further includes: a processor 1303, the processor 1303, based on the structure of the base station shown in FIG. And determining the status information of the user equipment to be switched; wherein the status information includes: mobile information of the user equipment to be switched or device-to-device D2D information.
  • the processor 1303 is configured to: determine whether the mobile information of the user equipment to be switched can be obtained; if yes, obtain the mobile information of the user equipment to be switched; otherwise, allocate the user equipment to be switched. D2D information.
  • the mobile information includes: the location information of the user equipment to be switched, the D2D information, the D2D identifier of the user equipment to be switched, and the first resource configuration information, the first resource.
  • the configuration information is used to indicate a communication resource occupied by the D2D signal of the user equipment to be switched.
  • the mobile information may further include location correction information, where the location correction information includes at least one of the following information:
  • the moving speed, moving direction, and positional accuracy of the user equipment to be switched are the moving speed, moving direction, and positional accuracy of the user equipment to be switched.
  • the handover response message may further include: the cell radio network in the target cell that the to-be-switched user equipment temporarily identifies the CRNTI and the second resource configuration information; wherein, the second resource configuration information is used by Instructing the target base station to allocate an initial uplink grant resource (UL-Grant) to the to-be-switched user equipment; correspondingly, the handover indication message may further include: the CRNTI and the second resource configuration information.
  • the base station in this embodiment is a serving base station of the source cell, and can be used to implement the technical solution of the method embodiment shown in FIG. 6.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • the present invention further provides a system for inter-cell handover, comprising: a base station according to the first embodiment, the second embodiment, or the third embodiment of the base station, and the base station described in the fourth embodiment or the fifth embodiment.
  • the system of the present embodiment can be used to implement the technical solutions of the method embodiments shown in FIG. 7 and FIG. 8.
  • the implementation principle and the technical effects are similar, and details are not described herein again.
  • the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

本发明提供一种小区间切换的方法、装置及系统。一种小区间切换的方法，包括：目标基站接收源基站发送的切换请求消息，所述切换请求消息包括待切换用户设备的状态信息；所述源基站为源小区的服务基站，所述目标基站为目标小区的服务基站；所述目标基站根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的时间提前量TA确定所述待切换用户设备的TA；所述目标基站向所述源基站发送切换响应消息，所述切换响应消息包括所述待切换用户设备的TA。解决了现有技术中在进行小区间切换时，存在空口信令开销较大以及切换延迟的问题。

Description

小区间切换的方法、装置及系统 技术领域
本发明实施例涉及通信技术，尤其涉及一种小区间切换的方法、装置及系统。
背景技术
通信系统中，当用户设备从一小区的覆盖区域移动到另一小区的覆盖区域时，需要进行小区间切换。
现有技术中，用户设备在源小区与目标小区之间切换的信令流程为：1)源基站向目标基站发送切换请求消息；2)目标基站向源基站返回切换响应消息；3)如果目标小区允许用户设备进行切换，则切换响应消息中包括用户设备到目标小区的切换指示，源基站将切换指示转发至用户设备；4)用户设备根据接收到的切换指示向目标基站发送随机接入请求消息；5)目标基站向用户设备返回随机接入响应消息，该随机接入响应消息包括时间提前量(TA，Time Advance)；其中，TA是目标基站根据用户设备发送的随机接入请求消息估计获得的；6)用户设备根据该TA与目标基站进行通信。
但是，现有技术中，在进行小区间切换时，存在空口信令开销较大以及切换延迟的问题。
发明内容
本发明提供一种小区间切换的方法、装置及系统，用以解决现有技术中在进行小区间切换时，存在空口信令开销较大以及切换延迟的问题。
第一方面，本发明提供一种小区间切换的方法，包括：
目标基站接收源基站发送的切换请求消息，所述切换请求消息包括待切换用户设备的状态信息；所述源基站为源小区的服务基站，所述目标基站为目标小区的服务基站；
所述目标基站根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA 确定所述待切换用户设备的TA；
所述目标基站向所述源基站发送切换响应消息，所述切换响应消息包括所述待切换用户设备的TA。
结合第一方面，在第一方面的第一种可能实现的方式中，所述目标基站根据所述协作用户设备的TA确定所述待切换用户设备的TA，包括：所述目标基站确定所述待切换用户设备的TA等于所述协作用户设备的TA；或者，所述目标基站确定所述待切换用户设备的TA等于所述协作用户设备的TA与偏移值之和；其中，所述偏移值根据所述协作用户设备与所述待切换用户设备之间的距离确定。
结合第一方面或者第一方面的第一种可能实现的方式，在第一方面的第二种可能实现的方式中，所述状态信息为所述待切换用户设备的移动信息；所述移动信息包括：所述待切换用户设备当前所处的位置信息；
相应的，所述目标基站根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，包括：
所述目标基站根据所述待切换用户设备当前所处的位置信息，确定与所述待切换用户设备之间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备。
结合第一方面的第二种可能实现的方式，在第一方面的第三种可能实现的方式中，所述移动信息还包括位置修正信息，所述位置修正信息包括下述信息中的至少一种：
所述待切换用户设备的移动速度、移动方向和位置精度；
相应的，所述目标基站根据所述待切换用户设备当前所处的位置信息，确定与所述待切换用户设备之间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备，包括：
所述目标基站根据所述待切换用户设备当前所处的位置信息以及所述位置修正信息，获得所述待切换用户设备修正后的位置信息，并根据所述待切换用户设备修正后的位置信息确定与所述待切换用户设备之间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备。
结合第一方面，在第一方面的第四种可能实现的方式中，所述状态信息为所述待切换用户设备的设备到设备(D2D，Device to Device)信息；所述 D2D信息包括：所述待切换用户设备的D2D标识以及第一资源配置信息，所述第一资源配置信息用于指示所述待切换用户设备的D2D信号所占的通信资源；
相应的，所述目标基站根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，包括：
所述目标基站向所述目标小区内的服务用户设备发送D2D测量指示消息；所述D2D测量指示消息包括：所述待切换用户设备的D2D标识以及第一资源配置信息；
所述目标基站接收所述服务用户设备发送的D2D测量响应消息；所述D2D测量响应消息包括D2D信号质量信息；所述D2D信号质量信息为所述服务用户设备根据所述待切换用户设备的D2D标识及第一资源配置信息所测得的所述服务用户设备与所述待切换用户设备之间的D2D信号质量信息；
所述目标基站确定D2D信号质量最好的服务用户设备为所述待切换用户设备的协作用户设备。
结合第一方面、第一方面的第一种至第四种任一种可能实现的方式，在第一方面的第五种可能实现的方式中，所述切换响应消息，还包括：所述待切换用户设备在所述目标小区下的小区无线网络临时识别CRNTI以及第二资源配置信息；其中，所述第二资源配置信息用于指示所述目标基站分配给所述待切换用户设备的初始上行授权资源UL-Grant。
第二方面，本发明又提供一种小区间切换的方法，包括：
源基站向目标基站发送切换请求消息，所述切换请求消息包括所述待切换用户设备的状态信息；所述源基站为源小区的服务基站，所述目标基站为待切换用户设备所需接入的目标小区的服务基站；
所述源基站接收所述目标基站发送的切换响应消息，所述切换响应消息包括：所述待切换用户设备的时间提前量TA；其中，所述待切换用户设备的TA为所述目标基站根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定的；
所述源基站向所述待切换用户设备发送切换指示消息，所述切换指示消息包括所述待切换用户设备的TA。
结合第二方面，在第二方面的第一种可能实现的方式中，所述源基站向目标基站发送切换请求消息之前，还包括：
所述源基站确定所述待切换用户设备的状态信息；
其中，所述状态信息，包括：所述待切换用户设备的移动信息或设备到设备D2D信息。
结合第二方面的第一种可能实现的方式，在第二方面的第二种可能实现的方式中，所述源基站确定所述待切换用户设备的状态信息，包括：
所述源基站确定是否能够获得所述待切换用户设备的移动信息；
若是，则所述源基站获取所述待切换用户设备的移动信息；
否则，所述源基站为所述待切换用户设备分配D2D信息。
结合第二方面的第一种至第二种任一种可能实现的方式，在第二方面的第三种可能实现的方式中，所述移动信息，包括：所述待切换用户设备当前所处的位置信息；
所述D2D信息，包括：所述待切换用户设备的D2D标识以及第一资源配置信息，所述第一资源配置信息用于指示所述待切换用户设备的D2D信号所占的通信资源。
结合第二方面的第三种可能实现的方式，在第二方面的第四种可能实现的方式中，所述移动信息还包括位置修正信息，所述位置修正信息包括下述信息中的至少一种：
所述待切换用户设备的移动速度、移动方向和位置精度。
结合第二方面、第二方面的第一种至第四种任一种可能实现的方式，在第二方面的第五种可能实现的方式中，所述切换响应消息，还包括：所述待切换用户设备在所述目标小区下的小区无线网络临时识别CRNTI以及第二资源配置信息；其中，所述第二资源配置信息用于指示所述目标基站分配给所述待切换用户设备的初始上行授权资源UL-Grant；
相应的，所述切换指示消息，还包括：所述CRNTI及所述第二资源配置信息。
第三方面，本发明提供一种目标基站，所述目标基站为目标小区的服务基站，所述目标基站包括：
接收模块，用于接收源基站发送的切换请求消息，所述切换请求消息包 括待切换用户设备的状态信息；所述源基站为源小区的服务基站；
确定模块，用于根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定所述待切换用户设备的TA；
发送模块，用于向所述源基站发送切换响应消息，所述切换响应消息包括所述待切换用户设备的TA。
结合第三方面，在第三方面的第一种可能实现的方式中，所述确定模块，具体用于：确定所述待切换用户设备的TA等于所述协作用户设备的TA；或者，确定所述待切换用户设备的TA等于所述协作用户设备的TA与偏移值之和；其中，所述偏移值根据所述协作用户设备与所述待切换用户设备之间的距离确定。
结合第三方面或第三方面的第一种可能实现的方式，在第三方面的第二种可能实现的方式中，所述状态信息为所述待切换用户设备的移动信息；所述移动信息包括：所述待切换用户设备当前所处的位置信息；
相应的，所述确定模块，具体用于：根据所述待切换用户设备当前所处的位置信息，确定与所述待切换用户设备之间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备。
结合第三方面的第二种可能实现的方式，在第三方面的第三种可能实现的方式中，所述移动信息还包括位置修正信息，所述位置修正信息包括下述信息中的至少一种：
所述待切换用户设备的移动速度、移动方向和位置精度；
相应的，所述确定模块，具体用于：根据所述待切换用户设备当前所处的位置信息以及所述位置修正信息，获得所述待切换用户设备修正后的位置信息，并根据所述待切换用户设备修正后的位置信息确定与所述待切换用户设备之间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备。
结合第三方面，在第三方面的第四种可能实现的方式中，所述状态信息为所述待切换用户设备的设备到设备D2D信息；所述D2D信息包括：所述待切换用户设备的D2D标识以及第一资源配置信息，所述第一资源配置信息用于指示所述待切换用户设备的D2D信号所占的通信资源；
相应的，所述确定模块，具体用于：
向所述目标小区内的服务用户设备发送D2D测量指示消息；所述D2D测量指示消息包括：所述待切换用户设备的D2D标识以及第一资源配置信息；
接收所述服务用户设备发送的D2D测量响应消息；所述D2D测量响应消息包括D2D信号质量信息；所述D2D信号质量信息为所述服务用户设备根据所述待切换用户设备的D2D标识及第一资源配置信息所测得的所述服务用户设备与所述待切换用户设备之间的D2D信号质量信息；
确定D2D信号质量最好的服务用户设备为所述待切换用户设备的协作用户设备。
结合第三方面、第三方面的第一种至第四种任一种可能实现的方式，在第三方面的第五种可能实现的方式中，所述切换响应消息，还包括：所述待切换用户设备在所述目标小区下的小区无线网络临时识别CRNTI以及第二资源配置信息；其中，所述第二资源配置信息用于指示所述目标基站分配给所述待切换用户设备的初始上行授权资源UL-Grant。
第四方面，本发明提供一种源基站，所述源基站为源小区的服务基站，所述源基站包括：
切换请求发送模块，用于向目标基站发送切换请求消息，所述切换请求消息包括所述待切换用户设备的状态信息；所述目标基站为待切换用户设备所需接入的目标小区的服务基站；
接收模块，用于接收所述目标基站发送的切换响应消息，所述切换响应消息包括：所述待切换用户设备的时间提前量TA；其中，所述待切换用户设备的TA为所述目标基站根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定的；
切换指示发送模块，用于向所述待切换用户设备发送切换指示消息，所述切换指示消息包括所述待切换用户设备的TA。
结合第四方面，在第四方面的第一种可能实现的方式中，还包括：
确定模块，用于确定所述待切换用户设备的状态信息；其中，所述状态信息，包括：所述待切换用户设备的移动信息或设备到设备D2D信息。
结合第四方面的第一种可能实现的方式，在第四方面的第二种可能实现 的方式中，所述确定模块，具体用于：
确定是否能够获得所述待切换用户设备的移动信息；
若是，则获取所述待切换用户设备的移动信息；
否则，为所述待切换用户设备分配D2D信息。
结合第四方面的第一种至第二种任一种可能实现的方式，在第四方面的第三种可能实现的方式中，所述移动信息，包括：所述待切换用户设备当前所处的位置信息；
所述D2D信息，包括：所述待切换用户设备的D2D标识以及第一资源配置信息，所述第一资源配置信息用于指示所述待切换用户设备的D2D信号所占的通信资源。
结合第四方面的第三种可能实现的方式，在第四方面的第四种可能实现的方式中，所述移动信息还包括位置修正信息，所述位置修正信息包括下述信息中的至少一种：
所述待切换用户设备的移动速度、移动方向和位置精度。
结合第四方面、第四方面的第一种至第四种任一种可能实现的方式，在第四方面的第五种可能实现的方式中，所述切换响应消息，还包括：所述待切换用户设备在所述目标小区下的小区无线网络临时识别CRNTI以及第二资源配置信息；其中，所述第二资源配置信息用于指示所述目标基站分配给所述待切换用户设备的初始上行授权资源UL-Grant；
相应的，所述切换指示消息，还包括：所述CRNTI及所述第二资源配置信息。
本发明提供一种小区间切换的系统，包括：第三方面、第三方面的第一种至第五种任一种可能实现的方式中的基站和第四方面、第四方面的第一种至第五种任一种可能实现的方式中的基站。
本发明提供一种小区间切换的方法、装置及系统，通过目标基站根据源基站发送的待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定所述待切换用户设备的TA，向源基站发送包括待切换用户设备的TA的切换响应消息，以使源基站将待切换用户设备的TA通过切换指示消息发送至该待切换用户设备，避免了待切换用户设备在切换过程中的随机接入过程，从而减少了空 口信令开销且减小了切换延迟。
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图1为本发明小区间切换的方法的应用场景示意图；
图2为本发明小区间切换的方法实施例一的流程图；
图3为本发明小区间切换的方法实施例二的流程图；
图4为本发明小区间切换的方法实施例三的流程图；
图5为本发明小区间切换的方法实施例四的流程图；
图6为本发明小区间切换的方法实施例五的流程图；
图7为本发明小区间切换的方法实施例六的流程图；
图8为本发明小区间切换的方法实施例七的流程图；
图9为本发明基站实施例一的结构示意图；
图10为本发明基站实施例四的结构示意图；
图11为本发明基站实施例五的结构示意图；
图12为本发明基站实施例六的结构示意图；
图13为本发明基站实施例九的结构示意图；
图14为本发明基站实施例十的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
图1为本发明小区间切换的方法的应用场景示意图；如图1所示，无线通信网络中，用户设备13驻留在源小区11，当用户设备13沿图1中虚线箭头所示方向从位置L1移动至位置L2时，用户设备13需要进行从源小区11 到目标小区12的小区间切换。现有技术中，用户设备13接收到源小区11的服务基站发送的切换指示消息后，需要向目标小区12的服务基站发送随机接入请求消息，以使目标小区12的服务基站能够根据该随机接入请求消息估计用户设备13的TA，并将该TA通过随机接入响应消息发送至用户设备13；因此，在进行小区间切换时，存在空口信令开销较大以及切换延迟的问题。
需要说明的是，本发明源小区和目标小区的服务基站可以相同，也可以不同；也即，本发明中源基站和目标基站可以为同一基站，也可以为不同的基站。
图2为本发明小区间切换的方法实施例一的流程图，如图2所示，本实施例的方法可以包括：
步骤201、目标基站接收源基站发送的切换请求消息，所述切换请求消息包括待切换用户设备的状态信息；所述源基站为源小区的服务基站，所述目标基站为目标小区的服务基站；
步骤202、所述目标基站根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定所述待切换用户设备的TA；
步骤203、所述目标基站向所述源基站发送切换响应消息，所述切换响应消息包括所述待切换用户设备的TA。
现有技术，在待切换用户设备的切换过程中，目标基站根据待切换用户设备发送的随机接入请求消息估计该待切换用户设备的TA，并通过随机接入响应消息将该TA发送至待切换用户设备。本发明中，目标基站根据源基站发送的待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定所述待切换用户设备的TA，向源基站发送包括待切换用户设备的TA的切换响应消息，以使源基站将待切换用户设备的TA通过切换指示消息发送至该待切换用户设备。
现有技术中，由于目标基站需要根据待切换用户设备发送的随机接入请求消息估计该待切换用户设备的TA，并通过随机接入响应消息将该TA发送至待切换用户设备；需要通过待切换用户设备向目标基站发送随机接入请求，目标基站向待切换用户设备返回包括该待切换用户设备的TA的随机接入响应消息(也即，随机接入过程)之后，该待切换用户设备才能获得与目标基 站进行通信时应使用的TA值；因此，存在空口信令开销较大以及切换延迟的问题。通过本发明中目标基站根据源基站发送的待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定所述待切换用户设备的TA，向源基站发送包括待切换用户设备的TA的切换响应消息，以使源基站将待切换用户设备的TA通过切换指示消息发送至该待切换用户设备，避免了待切换用户设备在切换过程中的随机接入过程，从而减少了空口信令开销且减小了切换延迟。
本实施例中，通过目标基站根据源基站发送的待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定所述待切换用户设备的TA，向源基站发送包括待切换用户设备的TA的切换响应消息，以使源基站将待切换用户设备的TA通过切换指示消息发送至该待切换用户设备，避免了待切换用户设备在切换过程中的随机接入过程，从而减少了空口信令开销且减小了切换延迟。
图3为本发明小区间切换的方法实施例二的流程图，如图3所示，本实施例的方法可以包括：
步骤301、目标基站接收源基站发送的切换请求消息，所述切换请求消息包括待切换用户设备的移动信息；所述移动信息包括：所述待切换用户设备当前所处的位置信息；所述源基站为源小区的服务基站，所述目标基站为目标小区的服务基站；
步骤302、所述目标基站根据所述待切换用户设备的移动信息，确定与所述待切换用户设备之间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备；
可选的，目标基站可以通过向所述目标小区内的服务用户设备发送位置信息请求的方式，获得服务用户设备的当前所处的位置信息；目标基站再根据服务用户设备的当前所处的位置信息与待切换用户设备当前所处的位置信息，确定与所述待切换用户设备之间的距离小于预设门限的用户设备。
其中，所述服务用户设备可以为目标小区内的所有服务用户设备，或者，也可以为所述目标小区内、与所述待切换用户设备处于同一方向的服务用户设备。
可选的，待切换用户设备当前所处的位置信息及服务用户设备当前所处 的位置信息可以通过经纬度的方式表示，可以通过经纬度来计算待切换用户设备与服务用户设备之间的距离。
可选的，目标基站可以向服务用户设备发送位置信息请求；服务用户设备接收到所述位置信息请求后通过全球定位系统(GPS，Global Positioning System)获得自身当前所处的经纬度信息，并通过位置信息响应消息将所述服务用户设备当前所处的经纬度信息发送至目标基站。
可选的，目标基站也可以估计出服务用户设备与所述目标基站之间的相对位置；例如，以所述目标基站为参考点，以所述服务用户设备与所述目标基站之间的夹角、距离或坐标的方式表示。
可选的，所述移动信息还可以包括位置修正信息，所述位置修正信息包括下述信息中的至少一种：
所述待切换用户设备的移动速度、移动方向和位置精度；
进一步可选的，所述目标基站可以根据所述待切换用户设备当前所处的位置信息以及所述位置修正信息，获得所述待切换用户设备修正后的位置信息，并根据所述待切换用户设备修正后的位置信息确定与所述待切换用户设备之间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备。
可选的，当目标基站确定与所述待切换用户设备之间的距离小于预设门限的用户设备为多个时：可以将该多个用户设备中与所述待切换用户设备之间的距离最小的一用户设备作为所述待切换用户设备的协作用户设备。
步骤303、所述目标基站根据所述协作用户设备的TA确定所述待切换用户设备的TA；
具体的，所述目标基站先通过测量获得所述协作用户设备的TA，再根据所述协作用户设备的TA确定所述待切换用户设备的TA。
可选的，所述目标基站根据所述协作用户设备的TA确定所述待切换用户设备的TA，包括：
所述目标基站确定所述待切换用户设备的TA等于所述协作用户设备的TA；或者，
所述目标基站确定所述待切换用户设备的TA等于所述协作用户设备的TA与偏移值之和；其中，所述偏移值根据所述协作用户设备与所述待切换用 户设备之间的距离确定。
可选的，根据所述协作用户设备与所述待切换用户设备之间的距离，确定所述偏移值可以为：偏移值等于所述协作用户设备与所述待切换用户之间的距离除以电磁波在空气中的传输速度(3*10^8m/s)。
步骤304、所述目标基站向所述源基站发送切换响应消息，所述切换响应消息包括所述待切换用户设备的TA。
可选的，所述切换响应消息中，还可以包括：所述待切换用户设备在所述目标小区下的小区无线网络临时识别(CRNTI，Cell Radio Network Temporary Identify)以及第二资源配置信息；其中，所述第二资源配置信息用于指示所述目标基站分配给所述待切换用户设备的初始上行授权资源(UL-Grant)。通过在切换响应消息中携带待切换用户设备在目标小区下的CRNTI及第二资源配置信息，使得源基站在接收到该切换响应消息后能够通过切换指示消息将该CRNTI及第二资源配置信息发送至待切换用户设备；使得待切换用户设备在接收到切换指示消息后就能够获得其在目标小区下的CRNTI及第二资源配置信息，并能够根据该CRNTI及第二资源配置信息与目标基站进行通信，进一步减少了切换延迟。
本实施例中，通过目标基站根据源基站发送的待切换用户设备的移动信息，确定与所述待切换用户设备之间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备，并根据所述协作用户设备的TA确定所述待切换用户设备的TA，向源基站发送包括待切换用户设备的TA的切换响应消息，以使源基站将待切换用户设备的TA通过切换指示消息发送至该待切换用户设备，避免了待切换用户设备在切换过程中的随机接入过程，从而减少了空口信令开销且减小了切换延迟。
图4为本发明小区间切换的方法实施例三的流程图，如图4所示，本实施例的方法可以包括：
步骤401、目标基站接收源基站发送的切换请求消息，所述切换请求消息包括待切换用户设备的D2D信息；所述D2D信息包括：所述待切换用户设备的D2D标识以及第一资源配置信息，所述第一资源配置信息用于指示所述待切换用户设备的D2D信号所占的通信资源；所述源基站为源小区的服务基站，所述目标基站为目标小区的服务基站；
步骤402、所述目标基站向所述目标小区内的服务用户设备发送D2D测量指示消息；所述D2D测量指示消息包括：所述待切换用户设备的D2D标识以及第一资源配置信息；
其中，所述服务用户设备可以为目标小区内的所有服务用户设备，或者，也可以为所述目标小区内、与所述待切换用户设备处于同一方向的服务用户设备。
可选的，所述D2D测量指示消息，还可以包括：测量时刻、测量结果上报格式等。
步骤403、所述目标基站接收所述服务用户设备发送的D2D测量响应消息；所述D2D测量响应消息包括D2D信号质量信息；所述D2D信号质量信息为所述服务用户设备根据所述待切换用户设备的D2D标识及第一资源配置信息所测得的所述服务用户设备与所述待切换用户设备之间的D2D信号质量信息；
步骤404、所述目标基站确定D2D信号质量最好的服务用户设备为所述待切换用户设备的协作用户设备；
步骤405、所述目标基站根据所述协作用户设备的TA确定所述待切换用户设备的TA；
具体的，所述目标基站先通过测量获得所述协作用户设备的TA，再根据所述协作用户设备的TA确定所述待切换用户设备的TA。
可选的，所述目标基站可以确定所述待切换用户设备的TA等于所述协作用户设备的TA。
步骤406、所述目标基站向所述源基站发送切换响应消息，所述切换响应消息包括所述待切换用户设备的TA。
可选的，所述切换响应消息中，还可以包括：所述待切换用户设备在所述目标小区下的CRNTI以及第二资源配置信息；其中，所述第二资源配置信息用于指示所述目标基站分配给所述待切换用户设备的初始上行授权资源(UL-Grant)。通过在切换响应消息中携带待切换用户设备在目标小区下的CRNTI及第二资源配置信息，使得源基站在接收到该切换响应消息后能够通过切换指示消息将该CRNTI及第二资源配置信息发送至待切换用户设备；使得待切换用户设备在接收到切换指示消息后就能够获得其在目标小区下的 CRNTI及第二资源配置信息，并能够根据该CRNTI及第二资源配置信息与目标基站进行通信，进一步减少了切换延迟。
本实施例中，通过目标基站根据源基站发送的待切换用户设备的D2D信息，确定与所述待切换用户设备之间D2D信号质量最好的服务用户设备为所述待切换用户设备的协作用户设备，并根据所述协作用户设备的TA确定所述待切换用户设备的TA，向源基站发送包括待切换用户设备的TA的切换响应消息，以使源基站将待切换用户设备的TA通过切换指示消息发送至该待切换用户设备，避免了待切换用户设备在切换过程中的随机接入过程，从而减少了空口信令开销且减小了切换延迟。
图5为本发明小区间切换的方法实施例四的流程图，如图5所示，本实施例的方法可以包括：
步骤501、源基站向目标基站发送切换请求消息，所述切换请求消息包括所述待切换用户设备的状态信息；所述源基站为源小区的服务基站，所述目标基站为待切换用户设备所需接入的目标小区的服务基站；
步骤502、所述源基站接收所述目标基站发送的切换响应消息，所述切换响应消息包括：所述待切换用户设备的时间提前量TA；其中，所述待切换用户设备的TA为所述目标基站根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定的；
步骤503、所述源基站向所述待切换用户设备发送切换指示消息，所述切换指示消息包括所述待切换用户设备的TA。
现有技术中，源基站接收到目标基站发送的包括切换指示的切换响应消息后，向所述待切换用户设备发送切换指示消息，以使待切换用户设备能够根据接收到的切换指示向目标基站发送随机接入请求消息，目标基站根据该随机接入请求消息估计获得所述待切换用户设备的TA，目标基站再通过随机接入响应消息将该TA发送至所述待切换用户设备。本发明中，源基站向目标基站发送包括所述待切换用户设备的状态信息的切换请求消息，以使目标基站根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定所述待切换用户设备的TA；源基站接收目标基站发送的包括所述待切换用户设备的 TA的切换响应消息，并通过切换指示消息将待切换用户设备的TA发送至该待切换用户设备。
现有技术中，由于源基站接收目标基站发送的包括切换指示的切换响应消息后，向所述待切换用户设备发送切换指示消息，以使待切换用户设备能够根据接收到的切换指示向目标基站发送随机接入请求消息，目标基站根据该随机接入请求消息估计获得所述待切换用户设备的TA，目标基站再通过随机接入响应消息将该TA发送至所述待切换用户设备；需要通过待切换用户设备向目标基站发送随机接入请求，目标基站向待切换用户设备返回包括该待切换用户设备的TA的随机接入响应消息(也即，随机接入过程)之后，该待切换用户设备才能获得与目标基站进行通信时应使用的TA值；因此，存在空口信令开销较大以及切换延迟的问题。通过本发明中，源基站向目标基站发送包括所述待切换用户设备的状态信息的切换请求消息，以使目标基站根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定所述待切换用户设备的TA；源基站接收目标基站发送的包括所述待切换用户设备的TA的切换响应消息，并通过切换指示消息将待切换用户设备的TA发送至该待切换用户设备；避免了待切换用户设备在切换过程中的随机接入过程，从而减少了空口信令开销且减小了切换延迟。
图6为本发明小区间切换的方法实施例五的流程图，如图6所示，本实施例的方法可以包括：
步骤601、源基站根据用户设备的测量信息，确定所述用户设备为待切换用户设备及所述待切换用户设备所需接入的目标小区；所述源基站为源小区的服务基站；
步骤602、所述源基站确定是否能够获得所述待切换用户设备的移动信息；
若是，则执行步骤603；否则，执行步骤606；
步骤603、所述源基站获取所述待切换用户设备的移动信息；所述移动信息包括：所述待切换用户设备当前所处的位置信息；
可选的，所述移动信息还可以包括位置修正信息，所述位置修正信息包括下述信息中的至少一种：
所述待切换用户设备的移动速度、移动方向和位置精度。
步骤604、所述源基站向目标基站发送切换请求消息，所述切换请求消息包括所述待切换用户设备的移动信息；所述目标基站为所述目标小区的服务基站；
步骤605、所述源基站接收所述目标基站发送的切换响应消息，所述切换响应消息包括：所述待切换用户设备的TA；其中，所述待切换用户设备的TA为所述目标基站根据所述待切换用户设备的移动信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定的；
需要说明的是，执行完步骤605后，执行步骤609。
步骤606、所述源基站为所述待切换用户设备分配D2D信息；所述D2D信息包括：所述待切换用户设备的D2D标识以及第一资源配置信息，所述第一资源配置信息用于指示所述待切换用户设备的D2D信号所占的通信资源。
步骤607、所述源基站向目标基站发送切换请求消息，所述切换请求消息包括所述待切换用户设备的D2D信息；所述目标基站为所述目标小区的服务基站；
步骤608、所述源基站接收所述目标基站发送的切换响应消息，所述切换响应消息包括：所述待切换用户设备的TA；其中，所述待切换用户设备的TA为所述目标基站根据所述待切换用户设备的D2D信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定的；
步骤609、所述源基站向所述待切换用户设备发送切换指示消息，所述切换指示消息包括所述待切换用户设备的TA。
所述切换响应消息，还可以包括：所述待切换用户设备在所述目标小区下的小区无线网络临时识别CRNTI以及第二资源配置信息；其中，所述第二资源配置信息用于指示所述目标基站分配给所述待切换用户设备的初始上行授权资源(UL-Grant)；
相应的，所述切换指示消息，还可以包括：所述CRNTI及所述第二资源配置信息。通过在切换指示消息中携带待切换用户设备在目标小区下的CRNTI及第二资源配置信息，使得待切换用户设备在接收到切换指示消息后 就能够获得其在目标小区下的CRNTI及第二资源配置信息，并能够根据该CRNTI及第二资源配置信息与目标基站进行通信，进一步减少了切换延迟。
本实施例中，通过源基站向目标基站发送包括所述待切换用户设备的移动信息或D2D信息的切换请求消息，以使目标基站根据所述待切换用户设备的移动信息或D2D信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定所述待切换用户设备的TA；源基站接收目标基站发送的包括所述待切换用户设备的TA的切换响应消息，并通过切换指示消息将待切换用户设备的TA发送至该待切换用户设备；避免了待切换用户设备在切换过程中的随机接入过程，从而减少了空口信令开销且减小了切换延迟。
图7为本发明小区间切换的方法实施例六的流程图，如图7所示，本实施例的方法可以包括：
步骤701、源基站向目标基站发送切换请求消息，所述切换请求消息包括所述待切换用户设备的移动信息；所述移动信息，包括：所述待切换用户设备当前所处的位置信息；所述源基站为源小区的服务基站，所述目标基站为待切换用户设备所需接入的目标小区的服务基站；
需要说明的是，步骤701与步骤603相同，在此不再赘述。
步骤702、所述目标基站向所述目标小区内的服务用户设备发送位置信息请求消息，以获取服务用户设备当前所处的位置信息；
步骤703、所述目标基站接收所述服务用户设备发送的位置信息上报消息；所述位置信息上报消息中包括所述服务用户设备当前所处的位置信息；
步骤704、所述目标基站根据所述服务用户设备的当前所处的位置信息与所述待切换用户设备当前所处的位置信息，确定与所述待切换用户设备之间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备；并根据所述协作用户设备的TA确定所述待切换用户设备的TA；
需要说明的是，步骤704与步骤302、步骤303相同，在此不再赘述。
需要说明的是，图7中给出了目标基站仅向一个服务用户设备发送位置信息请求消息的情况；本领域技术人员应该明确，目标基站可以向一个或多个服务用户设备发送位置信息请求。
步骤705、所述目标基站向所述源基站发送切换响应消息，所述切换响应 消息包括所述待切换用户设备的TA；
需要说明的是，步骤705与步骤304相同，在此不再赘述。
步骤706、所述源基站接收到所述目标基站发送的切换响应消息后，向所述待切换用户设备发送切换指示消息，所述切换指示消息包括所述待切换用户设备的TA；
需要说明的是，步骤706与步骤609相同，在此不再赘述。
步骤707、所述待切换用户设备使用所述切换指示消息中包括的TA，与所述目标基站进行数据传输。
图8为本发明小区间切换的方法实施例七的流程图，如图8所示，本实施例的方法可以包括：
步骤801、源基站向目标基站发送切换请求消息，所述切换请求消息包括所述待切换用户设备的D2D信息；所述D2D信息包括：所述待切换用户设备的D2D标识以及第一资源配置信息，所述第一资源配置信息用于指示所述待切换用户设备的D2D信号所占的通信资源；所述源基站为源小区的服务基站，所述目标基站为待切换用户设备所需接入的目标小区的服务基站；
需要说明的是，步骤801与步骤606相同，在此不再赘述。
步骤802、所述目标基站向所述目标小区内的服务用户设备发送D2D测量指示消息；所述D2D测量指示消息包括：所述待切换用户设备的D2D标识以及第一资源配置信息；
需要说明的是，步骤802与步骤402相同，在此不再赘述。
步骤803、所述目标基站接收所述服务用户设备发送的D2D测量响应消息；所述D2D测量响应消息包括D2D信号质量信息；所述D2D信号质量信息为所述服务用户设备根据所述待切换用户设备的D2D标识及第一资源配置信息所测得的所述服务用户设备与所述待切换用户设备之间的D2D信号质量信息；
需要说明的是，步骤802与步骤403相同，在此不再赘述。
步骤804、所述目标基站确定D2D信号质量最好的服务用户设备为所述待切换用户设备的协作用户设备；并根据所述协作用户设备的TA确定所述待切换用户设备的TA；
需要说明的是，步骤804与步骤404、步骤405相同，在此不再赘述。
需要说明的是，图8中给出了目标基站仅向一个服务用户设备发送位置信息请求消息的情况；本领域技术人员应该明确，目标基站可以向一个或多个服务用户设备发送位置信息请求。
步骤805、所述目标基站向所述源基站发送切换响应消息，所述切换响应消息包括所述待切换用户设备的TA；
需要说明的是，步骤805与步骤705相同，在此不再赘述。
步骤806、所述源基站接收到所述目标基站发送的切换响应消息后，向所述待切换用户设备发送切换指示消息，所述切换指示消息包括所述待切换用户设备的TA；
需要说明的是，步骤806与步骤706相同，在此不再赘述。
步骤807、所述待切换用户设备使用所述切换指示消息中包括的TA，与所述目标基站进行数据传输。
需要说明的是，步骤807与步骤707相同，在此不再赘述。
图9为本发明基站实施例一的结构示意图，如图9所示，本实施例的基站可以包括：接收模块901、确定模块902和发送模块903。其中，接收模块901，用于接收源基站发送的切换请求消息，所述切换请求消息包括待切换用户设备的状态信息；所述源基站为源小区的服务基站；确定模块902，用于根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定所述待切换用户设备的TA；发送模块903，用于向所述源基站发送切换响应消息，所述切换响应消息包括所述待切换用户设备的TA。
本实施例的基站为目标小区的服务基站，可以用于执行图2所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
基站实施例二
在基站实施例一的基础上，可选的，确定模块902，具体用于：
确定所述待切换用户设备的TA等于所述协作用户设备的TA；或者，
确定所述待切换用户设备的TA等于所述协作用户设备的TA与偏移值之和；其中，所述偏移值根据所述协作用户设备与所述待切换用户设备之间的距离确定。
可选的，所述状态信息可以为所述待切换用户设备的移动信息；所述移 动信息包括：所述待切换用户设备当前所处的位置信息；确定模块902，具体用于：根据所述待切换用户设备当前所处的位置信息，确定与所述待切换用户设备之间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备。
可选的，所述移动信息还可以包括位置修正信息，所述位置修正信息包括下述信息中的至少一种：所述待切换用户设备的移动速度、移动方向和位置精度；确定模块902，具体用于：根据所述待切换用户设备当前所处的位置信息以及所述位置修正信息，获得所述待切换用户设备修正后的位置信息，并根据所述待切换用户设备修正后的位置信息确定与所述待切换用户设备之间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备。
本实施例的基站为目标小区的服务基站，可以用于执行图3所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
基站实施例三
在基站实施例一的基础上，可选的，所述状态信息可以为所述待切换用户设备的D2D信息；所述D2D信息包括：所述待切换用户设备的D2D标识以及第一资源配置信息，所述第一资源配置信息用于指示所述待切换用户设备的D2D信号所占的通信资源；确定模块902，具体用于：向所述目标小区内的服务用户设备发送D2D测量指示消息；所述D2D测量指示消息包括：所述待切换用户设备的D2D标识以及第一资源配置信息；接收所述服务用户设备发送的D2D测量响应消息；所述D2D测量响应消息包括D2D信号质量信息；所述D2D信号质量信息为所述服务用户设备根据所述待切换用户设备的D2D标识及第一资源配置信息所测得的所述服务用户设备与所述待切换用户设备之间的D2D信号质量信息；确定D2D信号质量最好的服务用户设备为所述待切换用户设备的协作用户设备。
可选的，所述切换响应消息，还可以包括：所述待切换用户设备在所述目标小区下的小区无线网络临时识别CRNTI以及第二资源配置信息；其中，所述第二资源配置信息用于指示所述目标基站分配给所述待切换用户设备的初始上行授权资源(UL-Grant)。
本实施例的基站为目标小区的服务基站，可以用于执行图4所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
图10为本发明基站实施例四的结构示意图，如图10所示，本实施例的基站可以包括：切换请求发送模块1001、接收模块1002和切换指示发送模块1003。其中，切换请求发送模块1001，用于向目标基站发送切换请求消息，所述切换请求消息包括所述待切换用户设备的状态信息；所述目标基站为待切换用户设备所需接入的目标小区的服务基站；接收模块1002，用于接收所述目标基站发送的切换响应消息，所述切换响应消息包括：所述待切换用户设备的时间提前量TA；其中，所述待切换用户设备的TA为所述目标基站根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定的；切换指示发送模块1003，用于向所述待切换用户设备发送切换指示消息，所述切换指示消息包括所述待切换用户设备的TA。
本实施例的基站为源小区的服务基站，可以用于执行图5所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
图11为本发明基站实施例五的结构示意图，如图11所示，本实施例的基站在图10所示基站结构的基础上，进一步地，还可以包括：确定模块1004，该确定模块1004，用于确定所述待切换用户设备的状态信息；其中，所述状态信息，包括：所述待切换用户设备的移动信息或设备到设备D2D信息。
可选的，确定模块1004，具体用于：确定是否能够获得所述待切换用户设备的移动信息；若是，则获取所述待切换用户设备的移动信息；否则，为所述待切换用户设备分配D2D信息。
其中，所述移动信息，包括：所述待切换用户设备当前所处的位置信息；所述D2D信息，包括：所述待切换用户设备的D2D标识以及第一资源配置信息，所述第一资源配置信息用于指示所述待切换用户设备的D2D信号所占的通信资源。
可选的，所述移动信息还可以包括位置修正信息，所述位置修正信息包括下述信息中的至少一种：
所述待切换用户设备的移动速度、移动方向和位置精度。
可选的，所述切换响应消息，还可以包括：所述待切换用户设备在所述目标小区下的小区无线网络临时识别CRNTI以及第二资源配置信息；其中，所述第二资源配置信息用于指示所述目标基站分配给所述待切换用户设备的 初始上行授权资源(UL-Grant)；相应的，所述切换指示消息，还可以包括：所述CRNTI及所述第二资源配置信息。
本实施例的基站为源小区的服务基站，可以用于执行图6所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
图12为本发明基站实施例六的结构示意图，如图12所示，本实施例的基站可以包括：接收机1201、处理器1202和发射机1203。其中，接收机1201，用于接收源基站发送的切换请求消息，所述切换请求消息包括待切换用户设备的状态信息；所述源基站为源小区的服务基站；处理器1202，用于根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定所述待切换用户设备的TA；发射机1203，用于向所述源基站发送切换响应消息，所述切换响应消息包括所述待切换用户设备的TA。
本实施例的基站为目标小区的服务基站，可以用于执行图2所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
基站实施例七
在基站实施例六的基础上，可选的，处理器1202，具体用于：
确定所述待切换用户设备的TA等于所述协作用户设备的TA；或者，
确定所述待切换用户设备的TA等于所述协作用户设备的TA与偏移值之和；其中，所述偏移值根据所述协作用户设备与所述待切换用户设备之间的距离确定。
可选的，所述状态信息可以为所述待切换用户设备的移动信息；所述移动信息包括：所述待切换用户设备当前所处的位置信息；处理器1202，具体用于：根据所述待切换用户设备当前所处的位置信息，确定与所述待切换用户设备之间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备。
可选的，所述移动信息还可以包括位置修正信息，所述位置修正信息包括下述信息中的至少一种：所述待切换用户设备的移动速度、移动方向和位置精度；处理器1202，具体用于：根据所述待切换用户设备当前所处的位置信息以及所述位置修正信息，获得所述待切换用户设备修正后的位置信息，并根据所述待切换用户设备修正后的位置信息确定与所述待切换用户设备之 间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备。
本实施例的基站为目标小区的服务基站，可以用于执行图3所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
基站实施例八
在基站实施例六的基础上，可选的，所述状态信息可以为所述待切换用户设备的D2D信息；所述D2D信息包括：所述待切换用户设备的D2D标识以及第一资源配置信息，所述第一资源配置信息用于指示所述待切换用户设备的D2D信号所占的通信资源；处理器1202，具体用于：向所述目标小区内的服务用户设备发送D2D测量指示消息；所述D2D测量指示消息包括：所述待切换用户设备的D2D标识以及第一资源配置信息；接收所述服务用户设备发送的D2D测量响应消息；所述D2D测量响应消息包括D2D信号质量信息；所述D2D信号质量信息为所述服务用户设备根据所述待切换用户设备的D2D标识及第一资源配置信息所测得的所述服务用户设备与所述待切换用户设备之间的D2D信号质量信息；确定D2D信号质量最好的服务用户设备为所述待切换用户设备的协作用户设备。
可选的，所述切换响应消息，还可以包括：所述待切换用户设备在所述目标小区下的小区无线网络临时识别CRNTI以及第二资源配置信息；其中，所述第二资源配置信息用于指示所述目标基站分配给所述待切换用户设备的初始上行授权资源(UL-Grant)。
本实施例的基站为目标小区的服务基站，可以用于执行图4所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
图13为本发明基站实施例九的结构示意图，如图13所示，本实施例的基站可以包括：发射机1301和接收机1302。其中，发射机1301，用于向目标基站发送切换请求消息，所述切换请求消息包括所述待切换用户设备的状态信息；所述目标基站为待切换用户设备所需接入的目标小区的服务基站；接收机1302，用于接收所述目标基站发送的切换响应消息，所述切换响应消息包括：所述待切换用户设备的时间提前量TA；其中，所述待切换用户设备的TA为所述目标基站根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定的；发射机1301，还用于向所述待切换用户设备发送切换指示消息， 所述切换指示消息包括所述待切换用户设备的TA。
本实施例的基站为源小区的服务基站，可以用于执行图5所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
图14为本发明基站实施例十的结构示意图，如图14所示，本实施例的基站在图13所示基站结构的基础上，进一步地，还可以包括：处理器1303，该处理器1303，用于确定所述待切换用户设备的状态信息；其中，所述状态信息，包括：所述待切换用户设备的移动信息或设备到设备D2D信息。
可选的，处理器1303，具体用于：确定是否能够获得所述待切换用户设备的移动信息；若是，则获取所述待切换用户设备的移动信息；否则，为所述待切换用户设备分配D2D信息。
其中，所述移动信息，包括：所述待切换用户设备当前所处的位置信息；所述D2D信息，包括：所述待切换用户设备的D2D标识以及第一资源配置信息，所述第一资源配置信息用于指示所述待切换用户设备的D2D信号所占的通信资源。
可选的，所述移动信息还可以包括位置修正信息，所述位置修正信息包括下述信息中的至少一种：
所述待切换用户设备的移动速度、移动方向和位置精度。
可选的，所述切换响应消息，还可以包括：所述待切换用户设备在所述目标小区下的小区无线网络临时识别CRNTI以及第二资源配置信息；其中，所述第二资源配置信息用于指示所述目标基站分配给所述待切换用户设备的初始上行授权资源(UL-Grant)；相应的，所述切换指示消息，还可以包括：所述CRNTI及所述第二资源配置信息。
本实施例的基站为源小区的服务基站，可以用于执行图6所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
本发明还提供一种小区间切换的系统，包括：基站实施例一、实施例二、或实施例三中所述的基站，以及基站实施例四或实施例五中所述的基站。
本实施例的系统，可以用于执行图7、图8所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
本领域普通技术人员可以理解：实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读 取存储介质中，该程序在执行时，执行包括上述方法实施例的步骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (25)

  1. 一种小区间切换的方法，其特征在于，包括：
    目标基站接收源基站发送的切换请求消息，所述切换请求消息包括待切换用户设备的状态信息；所述源基站为源小区的服务基站，所述目标基站为目标小区的服务基站；
    所述目标基站根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的时间提前量TA确定所述待切换用户设备的TA；
    所述目标基站向所述源基站发送切换响应消息，所述切换响应消息包括所述待切换用户设备的TA。
  2. 根据权利要求1所述的方法，其特征在于，所述目标基站根据所述协作用户设备的TA确定所述待切换用户设备的TA，包括：
    所述目标基站确定所述待切换用户设备的TA等于所述协作用户设备的TA；
    或者，
    所述目标基站确定所述待切换用户设备的TA等于所述协作用户设备的TA与偏移值之和；其中，所述偏移值根据所述协作用户设备与所述待切换用户设备之间的距离确定。
  3. 根据权利要求1或2所述的方法，其特征在于，所述状态信息为所述待切换用户设备的移动信息；所述移动信息包括：所述待切换用户设备当前所处的位置信息；
    相应的，所述目标基站根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，包括：
    所述目标基站根据所述待切换用户设备当前所处的位置信息，确定与所述待切换用户设备之间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备。
  4. 根据权利要求3所述的方法，其特征在于，所述移动信息还包括位置修正信息，所述位置修正信息包括下述信息中的至少一种：
    所述待切换用户设备的移动速度、移动方向和位置精度；
    相应的，所述目标基站根据所述待切换用户设备当前所处的位置信息， 确定与所述待切换用户设备之间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备，包括：
    所述目标基站根据所述待切换用户设备当前所处的位置信息以及所述位置修正信息，获得所述待切换用户设备修正后的位置信息，并根据所述待切换用户设备修正后的位置信息确定与所述待切换用户设备之间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备。
  5. 根据权利要求1所述的方法，其特征在于，所述状态信息为所述待切换用户设备的设备到设备D2D信息；所述D2D信息包括：所述待切换用户设备的D2D标识以及第一资源配置信息，所述第一资源配置信息用于指示所述待切换用户设备的D2D信号所占的通信资源；
    相应的，所述目标基站根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，包括：
    所述目标基站向所述目标小区内的服务用户设备发送D2D测量指示消息；所述D2D测量指示消息包括：所述待切换用户设备的D2D标识以及第一资源配置信息；
    所述目标基站接收所述服务用户设备发送的D2D测量响应消息；所述D2D测量响应消息包括D2D信号质量信息；所述D2D信号质量信息为所述服务用户设备根据所述待切换用户设备的D2D标识及第一资源配置信息所测得的所述服务用户设备与所述待切换用户设备之间的D2D信号质量信息；
    所述目标基站确定D2D信号质量最好的服务用户设备为所述待切换用户设备的协作用户设备。
  6. 根据权利要求1～5任一项所述的方法，其特征在于，所述切换响应消息，还包括：所述待切换用户设备在所述目标小区下的小区无线网络临时识别CRNTI以及第二资源配置信息；其中，所述第二资源配置信息用于指示所述目标基站分配给所述待切换用户设备的初始上行授权资源UL-Grant。
  7. 一种小区间切换的方法，其特征在于，包括：
    源基站向目标基站发送切换请求消息，所述切换请求消息包括所述待切换用户设备的状态信息；所述源基站为源小区的服务基站，所述目标基站为待切换用户设备所需接入的目标小区的服务基站；
    所述源基站接收所述目标基站发送的切换响应消息，所述切换响应消息 包括：所述待切换用户设备的时间提前量TA；其中，所述待切换用户设备的TA为所述目标基站根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定的；
    所述源基站向所述待切换用户设备发送切换指示消息，所述切换指示消息包括所述待切换用户设备的TA。
  8. 根据权利要求7所述的方法，其特征在于，所述源基站向目标基站发送切换请求消息之前，还包括：
    所述源基站确定所述待切换用户设备的状态信息；
    其中，所述状态信息，包括：所述待切换用户设备的移动信息或设备到设备D2D信息。
  9. 根据权利要求8所述的方法，其特征在于，所述源基站确定所述待切换用户设备的状态信息，包括：
    所述源基站确定是否能够获得所述待切换用户设备的移动信息；
    若是，则所述源基站获取所述待切换用户设备的移动信息；
    否则，所述源基站为所述待切换用户设备分配D2D信息。
  10. 根据权利要求8或9所述的方法，其特征在于，所述移动信息，包括：所述待切换用户设备当前所处的位置信息；
    所述D2D信息，包括：所述待切换用户设备的D2D标识以及第一资源配置信息，所述第一资源配置信息用于指示所述待切换用户设备的D2D信号所占的通信资源。
  11. 根据权利要求10所述的方法，其特征在于，所述移动信息还包括位置修正信息，所述位置修正信息包括下述信息中的至少一种：
    所述待切换用户设备的移动速度、移动方向和位置精度。
  12. 根据权利要求7～11任一项所述的方法，其特征在于，所述切换响应消息，还包括：所述待切换用户设备在所述目标小区下的小区无线网络临时识别CRNTI以及第二资源配置信息；其中，所述第二资源配置信息用于指示所述目标基站分配给所述待切换用户设备的初始上行授权资源UL-Grant；
    相应的，所述切换指示消息，还包括：所述CRNTI及所述第二资源配置信息。
  13. 一种目标基站，其特征在于，所述目标基站为目标小区的服务基站，所述目标基站包括：
    接收模块，用于接收源基站发送的切换请求消息，所述切换请求消息包括待切换用户设备的状态信息；所述源基站为源小区的服务基站；
    确定模块，用于根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的时间提前量TA确定所述待切换用户设备的TA；
    发送模块，用于向所述源基站发送切换响应消息，所述切换响应消息包括所述待切换用户设备的TA。
  14. 根据权利要求13所述的基站，其特征在于，所述确定模块，具体用于：
    确定所述待切换用户设备的TA等于所述协作用户设备的TA；
    或者，
    确定所述待切换用户设备的TA等于所述协作用户设备的TA与偏移值之和；其中，所述偏移值根据所述协作用户设备与所述待切换用户设备之间的距离确定。
  15. 根据权利要求13或14所述的基站，其特征在于，所述状态信息为所述待切换用户设备的移动信息；所述移动信息包括：所述待切换用户设备当前所处的位置信息；
    相应的，所述确定模块，具体用于：根据所述待切换用户设备当前所处的位置信息，确定与所述待切换用户设备之间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备。
  16. 根据权利要求15所述的基站，其特征在于，所述移动信息还包括位置修正信息，所述位置修正信息包括下述信息中的至少一种：
    所述待切换用户设备的移动速度、移动方向和位置精度；
    相应的，所述确定模块，具体用于：根据所述待切换用户设备当前所处的位置信息以及所述位置修正信息，获得所述待切换用户设备修正后的位置信息，并根据所述待切换用户设备修正后的位置信息确定与所述待切换用户设备之间的距离小于预设门限的用户设备为所述待切换用户设备的协作用户设备。
  17. 根据权利要求13所述的基站，其特征在于，所述状态信息为所述待切换用户设备的设备到设备D2D信息；所述D2D信息包括：所述待切换用户设备的D2D标识以及第一资源配置信息，所述第一资源配置信息用于指示所述待切换用户设备的D2D信号所占的通信资源；
    相应的，所述确定模块，具体用于：
    向所述目标小区内的服务用户设备发送D2D测量指示消息；所述D2D测量指示消息包括：所述待切换用户设备的D2D标识以及第一资源配置信息；
    接收所述服务用户设备发送的D2D测量响应消息；所述D2D测量响应消息包括D2D信号质量信息；所述D2D信号质量信息为所述服务用户设备根据所述待切换用户设备的D2D标识及第一资源配置信息所测得的所述服务用户设备与所述待切换用户设备之间的D2D信号质量信息；
    确定D2D信号质量最好的服务用户设备为所述待切换用户设备的协作用户设备。
  18. 根据权利要求13～17任一项所述的基站，其特征在于，所述切换响应消息，还包括：所述待切换用户设备在所述目标小区下的小区无线网络临时识别CRNTI以及第二资源配置信息；其中，所述第二资源配置信息用于指示所述目标基站分配给所述待切换用户设备的初始上行授权资源UL-Grant。
  19. 一种源基站，其特征在于，所述源基站为源小区的服务基站，所述源基站包括：
    切换请求发送模块，用于向目标基站发送切换请求消息，所述切换请求消息包括所述待切换用户设备的状态信息；所述目标基站为待切换用户设备所需接入的目标小区的服务基站；
    接收模块，用于接收所述目标基站发送的切换响应消息，所述切换响应消息包括：所述待切换用户设备的时间提前量TA；其中，所述待切换用户设备的TA为所述目标基站根据所述待切换用户设备的状态信息，确定用于协助所述待切换用户设备进行切换的协作用户设备，并根据所述协作用户设备的TA确定的；
    切换指示发送模块，用于向所述待切换用户设备发送切换指示消息，所述切换指示消息包括所述待切换用户设备的TA。
  20. 根据权利要求19所述的基站，其特征在于，还包括：
    确定模块，用于确定所述待切换用户设备的状态信息；其中，所述状态信息，包括：所述待切换用户设备的移动信息或设备到设备D2D信息。
  21. 根据权利要求20所述的基站，其特征在于，所述确定模块，具体用于：
    确定是否能够获得所述待切换用户设备的移动信息；
    若是，则获取所述待切换用户设备的移动信息；
    否则，为所述待切换用户设备分配D2D信息。
  22. 根据权利要求20或21所述的基站，其特征在于，所述移动信息，包括：所述待切换用户设备当前所处的位置信息；
    所述D2D信息，包括：所述待切换用户设备的D2D标识以及第一资源配置信息，所述第一资源配置信息用于指示所述待切换用户设备的D2D信号所占的通信资源。
  23. 根据权利要求22所述的基站，其特征在于，所述移动信息还包括位置修正信息，所述位置修正信息包括下述信息中的至少一种：
    所述待切换用户设备的移动速度、移动方向和位置精度。
  24. 根据权利要求19～23任一项所述的基站，其特征在于，所述切换响应消息，还包括：所述待切换用户设备在所述目标小区下的小区无线网络临时识别CRNTI以及第二资源配置信息；其中，所述第二资源配置信息用于指示所述目标基站分配给所述待切换用户设备的初始上行授权资源UL-Grant；
    相应的，所述切换指示消息，还包括：所述CRNTI及所述第二资源配置信息。
  25. 一种小区间切换系统，其特征在于，包括：权利要求13～18任一项所述的基站和权利要求19～24任一项所述的基站。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109891957A (zh) * 2016-10-28 2019-06-14 瑞典爱立信有限公司 Ue补偿的定时提前
US12052626B2 (en) 2021-12-23 2024-07-30 T-Mobile Usa, Inc. Steering non-mobile connected-mode user equipment to higher capacity radio cells

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112019018266A2 (pt) * 2017-11-16 2020-07-14 Guangdong Oppo Mobile Telecommunications Corp., Ltd. método de recebimento de informações, e equipamento de usuário
CN108933996B (zh) * 2018-07-19 2021-02-02 重庆邮电大学 一种针对lte-v2x系统的联合切换方法
CN112449416A (zh) * 2019-08-30 2021-03-05 成都华为技术有限公司 一种数据传输方法以及装置
WO2021168665A1 (zh) * 2020-02-25 2021-09-02 Oppo广东移动通信有限公司 通信方法及装置
CN114679794A (zh) * 2020-12-24 2022-06-28 中兴通讯股份有限公司 随机接入方法、装置、终端、电子设备和可读存储介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101370267A (zh) * 2007-08-19 2009-02-18 中兴通讯股份有限公司 一种移动通信系统中的切换方法
CN101883406A (zh) * 2009-05-07 2010-11-10 株式会社Ntt都科摩 一种切换方法、移动终端及基站
CN101932052A (zh) * 2009-06-23 2010-12-29 华为技术有限公司 一种切换方法、用户终端及网络侧设备
CN103139855A (zh) * 2011-11-21 2013-06-05 上海贝尔股份有限公司 一种由源基站切换至目标基站的方法、装置与系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101998553B (zh) * 2009-08-14 2013-07-31 电信科学技术研究院 上行资源的分配方法和设备
US9198094B2 (en) * 2011-02-24 2015-11-24 Lg Electronics Inc. Method for setting search space for handover of relay node in wireless communication system, and device therefor
CN102740385B (zh) * 2011-04-11 2016-08-10 华为技术有限公司 用于小区切换的方法和装置
CN102843742B (zh) * 2012-09-20 2016-04-20 新邮通信设备有限公司 一种无线网络临时标识分配方法和系统
CN103945471B (zh) * 2013-01-21 2019-01-22 电信科学技术研究院 一种小区切换方法及装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101370267A (zh) * 2007-08-19 2009-02-18 中兴通讯股份有限公司 一种移动通信系统中的切换方法
CN101883406A (zh) * 2009-05-07 2010-11-10 株式会社Ntt都科摩 一种切换方法、移动终端及基站
CN101932052A (zh) * 2009-06-23 2010-12-29 华为技术有限公司 一种切换方法、用户终端及网络侧设备
CN103139855A (zh) * 2011-11-21 2013-06-05 上海贝尔股份有限公司 一种由源基站切换至目标基站的方法、装置与系统

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109891957A (zh) * 2016-10-28 2019-06-14 瑞典爱立信有限公司 Ue补偿的定时提前
US12052626B2 (en) 2021-12-23 2024-07-30 T-Mobile Usa, Inc. Steering non-mobile connected-mode user equipment to higher capacity radio cells

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