WO2013170484A1 - 小区配置信息的通知方法及相关装置和系统 - Google Patents

小区配置信息的通知方法及相关装置和系统 Download PDF

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Publication number
WO2013170484A1
WO2013170484A1 PCT/CN2012/075749 CN2012075749W WO2013170484A1 WO 2013170484 A1 WO2013170484 A1 WO 2013170484A1 CN 2012075749 W CN2012075749 W CN 2012075749W WO 2013170484 A1 WO2013170484 A1 WO 2013170484A1
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Prior art keywords
cell
frame number
system frame
user equipment
access device
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PCT/CN2012/075749
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English (en)
French (fr)
Inventor
李强
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.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2012/075749 priority Critical patent/WO2013170484A1/zh
Priority to CN201280000776.2A priority patent/CN104509160B/zh
Publication of WO2013170484A1 publication Critical patent/WO2013170484A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • H04W36/0061Transmission or use of information for re-establishing the radio link of neighbour cell information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method for notifying cell configuration information, a cell handover control method, and related devices and systems. Background technique
  • the coverage is usually small due to the limited transmit power of the micro cell.
  • a cell range expansion (CRE) technique is usually adopted. Based on the CRE technology, the coverage of the micro cell will be deliberately extended.
  • the extension mode is: For the traditional macro cell selection, the base station selects the UE to the macro cell with the strongest reference signal receiving power (RSRP, Reference Signal Receiving Power); In the micro cell, the base station first adds an offset offset to the RSRP-pico of the downlink signal of the micro cell, and becomes offset+RSRP-pico. Thus, even if the downlink signal RSRP-macro of the macro cell is strong, as long as the RSRP-macro ⁇ Offset+RSRP-pico, the base station may still choose to switch the UE to the micro cell.
  • RSRP Reference Signal Receiving Power
  • the base station initiates the macro-cell handover of the user equipment (UE, User Equipment) in advance based on the CRE technology, there may be problems such as neighboring area interference, which may result in the UE failing to correctly obtain the micro-area after switching to the micro-area.
  • the physical broadcast channel receives cell configuration information (eg, cell system frame number, etc.).
  • the embodiment of the present invention provides a method for notifying a cell configuration information, a cell handover control method, and a related device and a communication system, so that the UE can obtain related configuration information of the handover target cell relatively accurately.
  • An embodiment of the present invention provides a method for notifying a cell configuration information, including:
  • the access device acquires a correspondence between a system frame number of the second cell and a system frame number of the first cell where the user equipment resides;
  • the access device generates a frame number relationship indication, where the frame number relationship indication is used to indicate the Corresponding relationship between the system frame number of the second cell and the system frame number of the first cell;
  • the access device sends the frame number relationship indication to the user equipment before the user equipment switches to the second cell.
  • An embodiment of the present invention further provides a method for notifying a cell configuration information, including: receiving, by a user equipment that is in a first cell, a frame number sent by a service access device of a first cell before switching to a second cell a relationship indication, where the frame number relationship indication is used to indicate a correspondence between a system frame number of the second cell and a system frame number of the first cell;
  • the user equipment according to the system frame number of the first cell, and the frame number relationship, indicate the correspondence between the system frame number of the second cell and the system frame number of the first cell, Determining a system frame number of the second cell
  • an access device including:
  • An acquiring unit configured to acquire a correspondence between a system frame number of the second cell and a system frame number of the first cell where the user equipment resides;
  • a generating unit configured to generate a frame number relationship indication, where the frame number relationship indication is used to indicate a correspondence between a system frame number of the second cell and a system frame number of the first cell;
  • a transmitter configured to send the frame number relationship indication to the user equipment before the user equipment switches to the second cell.
  • Another aspect of the embodiment of the present invention further provides a user equipment, including:
  • a receiver configured to receive a frame number relationship indication sent by a serving access device of the first cell, where the frame number relationship indication is used to indicate a system frame number of the second cell, before the first cell is switched to the second cell Corresponding relationship with the system frame number of the first cell;
  • the estimating unit is configured to: according to the system frame number of the first cell, and the frame number relationship, indicate the correspondence between the indicated system frame number of the second cell and the system frame number of the first cell, and determine The system frame number of the second cell.
  • Another aspect of the embodiment of the present invention further provides a communication system, including:
  • Another aspect of the present invention further provides a computer storage medium, where the computer storage medium stores a program, and the program includes some or all of the steps as described in the foregoing method embodiments.
  • the access device acquires a correspondence between a system frame number of the second cell and a system frame number of the first cell where the UE resides; and the UE switches to the second cell.
  • the generated frame number relationship indication for indicating a correspondence between a system frame number of the second cell and a system frame number of the first cell is sent to the UE. Based on this mechanism, the UE can accurately know the current system frame number of the second cell after switching to the second cell, thereby facilitating the continuity of the UE communication.
  • FIG. 1 is a schematic diagram of a macro cell and a micro cell adjacent to each other according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for notifying a cell configuration information according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of another method for notifying a cell configuration information according to an embodiment of the present invention
  • FIG. 5 is a schematic flowchart of another cell handover control method according to an embodiment of the present invention
  • FIG. 6 is a schematic flowchart of another cell handover control method according to an embodiment of the present invention
  • Figure 7-a is a schematic diagram of an access device according to an embodiment of the present invention.
  • FIG. 7-b is a schematic diagram of another access device according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of another user equipment according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of a communication system according to an embodiment of the present invention. detailed description
  • the embodiment of the present invention provides a method for notifying a cell configuration information, a cell handover control method, and a related device and a communication system, so that the UE can obtain related configuration information of the handover target cell relatively accurately.
  • the access device refers to an entity that can implement the wireless access management function of the user equipment, and the access device and the mobility management network element may have different names and locations in different networks. And product form.
  • an access device mentioned in the following embodiments of the present invention may be referred to as: Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN, Evolved UMTS Territorial Radio Access Network) Evolved base station (eNodeB), home base station (HeNB) or other type of base station; or UMTS Territorial Radio Access Network (UTRAN) GSM EDGE Radio Access Network (GERAN, GSM EDGE Radio Access) Base station controller in Network), or Radio Network Controller (RNC); or high-rate packet data access network in Wideband Code Division Multiple Access (CDMA) network (HRPD-AN, High Rate Packet Data Access Network)
  • EDG Evolved Packet Data Gateway
  • ASN-BS Access Service Network Base Station
  • two adjacent cells cell 1 and cell 2 in FIG. 1 are a micro cell (cell 1 ) and a micro cell (cell 2 ), respectively.
  • one CRE region can be generated (as shown in the shaded region in FIG. 1).
  • the signal strength from the serving cell here, cell 2 is a serving cell
  • the neighbor cell cell 1
  • the interference signal of cell 1 in the neighboring cell may cause the UE to fail to correctly receive the information carried by the important common control channel of the serving cell, especially the physical broadcast channel (PBCH).
  • PBCH physical broadcast channel
  • the handover is initiated in advance, which may cause the UE to correctly receive the information carried by the PBCH of the cell 2 after switching to the cell 2, resulting in UE communication is interrupted.
  • the serving base station of the source cell (cell 1) notifies the UE of the important configuration information carried by the target cell (cell 2) PBCH through the high layer signaling, so that To some extent, the problem that the UE cannot correctly receive the information carried by the PBCH after switching to the cell 2 and the communication is interrupted is solved.
  • the PBCH carries a lot of important configuration information, including the number of cell antenna ports, the downlink bandwidth of the cell, and the system frame number (SFN).
  • the information such as the number of cell antenna ports and the downlink bandwidth of the cell are static or semi-statically changed, and notification by high layer signaling is possible.
  • the SFN changes with time. Due to the delay and retransmission of the high-level signaling, the target cell (cell 2) may not be obtained through the high-level signaling of the source cell (cell 1). System frame number.
  • An embodiment of the method for notifying the cell configuration information of the present invention may include: acquiring, by the access device, a correspondence between a system frame number of the second cell and a system frame number of the first cell where the UE resides; generating a frame number relationship indication, The frame number relationship indication is used to indicate a correspondence between a system frame number of the second cell and a system frame number of the first cell. Before the UE switches to the second cell, the generated frame number relationship is sent to the UE. Instructions.
  • a method for notifying a cell configuration information may include the following content:
  • the access device acquires a system frame number of the second cell and a system frame number of the first cell where the UE resides.
  • the first cell and the second cell are, for example, neighbor cells. If the access device is the serving access device of the first cell, the access device may obtain the correspondence between the system frame number of the second cell and the system frame number of the first cell according to the neighboring area configuration information, or The serving access device of the first cell may also obtain a correspondence between the system frame number of the second cell and the system frame number of the first cell from the serving access device of the second cell.
  • the access device generates a frame number relationship indication
  • the frame number relationship indication is used to indicate a correspondence between a system frame number of the second cell and a system frame number of the first cell.
  • the access device sends the generated frame number relationship indication to the UE before the UE switches to the second cell.
  • the access device may send the generated frame number relationship indication to the UE at any time before the UE switches to the second cell.
  • the access device may send the foregoing frame number relationship indication to the UE by using high layer signaling or other types of messages.
  • the access device may send the foregoing frame number relationship indication to the UE by using radio resource control signaling; or the access device may send the foregoing frame number relationship indication to the UE by using a system broadcast message.
  • the access device may send a handover command to the UE from the first cell to the second cell, where the handover command carries the frame number relationship indication.
  • the handover command may further carry the identifier of the second cell, random access information (other radio resource configuration information), and/or frequency information of the second cell, and the like.
  • the The frame number relationship indication is used to indicate the other correspondence.
  • the UE that is camped on the first cell knows the change rule of the system frame number of the first cell (for example, periodically changes with time), so that the current system frame number of the first cell can be known, and therefore, the UE can be based on the first The current system frame number of the cell, and the frame number relationship indicates the correspondence between the indicated system frame number of the second cell and the system frame number of the first cell, to calculate the current system frame number of the second cell.
  • the access device acquires a correspondence between a system frame number of the second cell and a system frame number of the first cell where the UE resides; and sends the UE to the UE before switching to the second cell.
  • the generated frame number relationship indication for indicating a correspondence between a system frame number of the second cell and a system frame number of the first cell. Based on this mechanism, the UE can accurately know the current system frame number of the second cell after switching to the second cell, thereby facilitating the continuity of the UE communication.
  • the serving access device of the first cell may be not only before the UE switches from the first cell to the second cell (such as at any time before the UE detaches the first '", the area) Sending a frame number relationship indication to the UE, and sending the antenna port number information and/or downlink bandwidth information of the second cell to the UE before the UE switches from the first cell to the second cell, and may also be in the UE.
  • the first cell is handed over to the second cell, other configuration information and the like of the PBCH bearer of the second cell are further sent to the UE.
  • the access device may, for example, after the UE needs to switch from the first cell to the second cell, before the UE switches from the first to the second cell.
  • the UE sends a frame number relationship indication.
  • the access device can determine, for example, that the UE needs to be handed over from the first cell to the second cell in multiple manners. For example, the access device may receive the measurement report reported by the UE.
  • the access device determines the signal quality of the second cell and the signal quality of the first cell after setting the offset according to the measurement report, it determines that the The UE performs handover from the first cell to the second cell, or if it is determined according to the measurement report that the signal quality of the second cell is better than the signal quality of the first cell, the access device may determine that the UE needs to be from the first cell.
  • the handover is performed to the second cell, where the first cell is a macro cell, and the second cell is a micro cell (such as a micro cell or a common micro cell based on CRE technology) or a macro cell.
  • the access device may obtain the load ratio of the first cell and the second cell; if the load ratio of the first cell is higher than the load ratio of the second cell, determine that the UE needs to be performed from the first cell to the second cell. Switching, or, if the load ratio of the first cell is higher than a set first threshold, and If the load ratio of the first cell is higher than the load ratio of the second cell, it may be determined that the UE needs to be handed over from the first cell to the second cell.
  • the access device may receive the measurement report reported by the UE, and the access device acquires the load ratio of the first cell and the second cell, and if the signal quality of the second cell is determined according to the measurement report, the set offset is better than The second threshold is determined, and the load ratio of the first cell is higher than the load ratio of the second cell, and the access device may determine that the UE needs to be handed over from the first cell to the second cell.
  • the access device may also determine that the UE needs to be handed over from the first cell to the second cell by using other methods, which is not the case here.
  • An embodiment of the method for notifying the cell configuration information of the present invention may include: receiving, by the UE camping in the first cell, a frame number relationship indication sent by the serving access device of the first cell, the frame The number relationship indication is used to indicate a correspondence between the system frame number of the second cell and the system frame number of the first cell; the system frame number of the first cell of the UE, and the second indicated by the frame number relationship indication Corresponding relationship between the system frame number of the cell and the system frame number of the first cell, and determining the system frame number of the second cell.
  • a method for notifying a cell configuration information may include the following content:
  • the UE residing in the first cell receives the frame number relationship indication sent by the serving access device of the first cell, where the frame number relationship indication is used to indicate the system frame of the second cell. Correspondence between the number and the system frame number of the first cell;
  • the first cell and the second cell are, for example, neighbor cells.
  • the serving access device of the first cell may not only be before the UE switches from the first cell to the second cell (such as any time before the UE de-attaches the first cell),
  • the UE sends the frame number relationship indication, and may also send the antenna port number information and/or the downlink bandwidth information of the second cell to the UE before the UE switches from the first cell to the second cell, and may also be in the UE from the Before the handover to the second cell, the UE further sends other configuration information of the PBCH bearer of the second cell to the UE, and the UE may further send the service access device of the first cell before switching to the second cell. Antenna port number information and/or downlink bandwidth information of the second cell.
  • the generated device may send the generated frame number relationship indication to the UE at any time before the UE switches to the second cell. For example, staying in The UE of the first cell may receive a frame number relationship indication sent by the service access device of the first cell by using high layer signaling or other types of messages before switching to the second cell. For example, camping on the first cell
  • the UE Before receiving the second cell, the UE may receive a frame number relationship indication sent by the service access device of the first cell by using the radio resource control signaling; or receive the frame sent by the service access device of the first cell by using the system broadcast message. No. Relationship indication.
  • the UE residing in the first cell may receive a handover command that is sent by the serving access device of the first cell to the UE from the first cell to the second cell before switching to the second cell, where the handover is performed.
  • the command carries the indication of the frame number relationship.
  • the handover command may also carry the identifier of the second cell, random access information (or other radio resource configuration information), and/or frequency information of the second cell, and the like.
  • the system frame number of the first cell in the first cell, and the relationship between the frame number and the system frame number of the second cell and the system frame number of the first cell, and the second cell is determined.
  • System frame number is determined.
  • the frame number relationship indication is used to indicate the other correspondence.
  • the UE that is camped on the first cell knows the change rule of the system frame number of the first cell (for example, periodically changes with time), so that the current system frame number of the first cell can be known, and therefore, the UE can be based on the first
  • the current system frame number of the cell, and the frame number relationship indicates the correspondence between the indicated system frame number of the second cell and the system frame number of the first cell, to calculate the current system frame number of the second cell.
  • the UE may determine the second cell common control channel and the system message location according to the determined system frame number of the second cell, to search Searching for and receiving related system messages and/or paging messages of the second cell, and the like.
  • the serving access device of the first cell sends a system frame number indicating the second cell and the system frame of the first cell to the UE before the UE switches from the first cell to the second cell.
  • the frame number relationship of the correspondence between the numbers indicates that the UE corresponds to the indicated system frame number of the second cell and the system frame number of the first cell according to the system frame number of the first cell and the frame number relationship. Relationship, determining the system frame number of the second cell. Based on this mechanism, the UE can accurately learn the current system frame number of the second cell after switching from the first cell to the second cell, thereby facilitating the continuity of the UE communication.
  • the following describes an application scenario in which the cell configuration information notification is performed in the handover scenario.
  • another cell handover control method provided by an embodiment of the present invention may include the following inner valleys:
  • the UE 1 measures the downlink synchronization channel and the common pilot channel of the cell 1 and the cell 2, and reports the measurement report to the eNB1.
  • the eNB1 is the serving eNB of the cell 1
  • the eNB2 is the serving eNB of the cell 2.
  • the UE 1 is currently in the cell 1, the cell 2 and the cell 1 are the neighboring cells, and the cell 1 is the macro cell, and the cell 2 is the cell. Take the micro area based on CRE technology as an example.
  • the eNB 1 determines, according to the measurement report of the UE1, that the measurement result of the cell 2 is better than the measurement result of the cell 1 (for example, RSRP-Celll ⁇ RSRP-Cell2+offset), it is determined that the UE1 needs to be performed from the cell 1 to the cell 2. Switch.
  • eNB1 notifies UE 1 of an offset between system frame numbers of cell 1 and cell 2;
  • the eNB1 may notify the UE 1 of the offset between the system frame numbers of the cell 1 and the cell 2 through the UE-specific high-level signaling; or, the eNB1 may also broadcast the message to the UE through the system.
  • the eNB1 may also notify the UE 1 of the number of antenna ports and the downlink bandwidth of the cell 2, and may further notify the UE 1 of the PBCH of the cell 2, and may further notify the UE 1 of the offset between the system frame numbers of the cell 1 and the cell 2.
  • SFN_offset ( SFN_Celll - SFN_Cell2 ) mod N, or,
  • SFN_offset ( SFN_Cell2 - SFN_Celll ) mod N; SFN_Celll refers to the system frame number of cell 1, SFN_Cell2 refers to the system frame number of cell 2, mod refers to the modulo operation, N is the maximum system frame number of cell 1 and cell 2 plus 1, and SFN_offset is cell 1 and cell. The offset between the system frame numbers of 2.
  • the UE1 calculates a system frame number of the cell 2 according to the system frame number (SFN_Celll) of the source cell 1 and the system frame number difference (SFN_offset) of the source cell 1 and the target cell 2.
  • SFN_Cell2 ( SFN_Celll - SFN_offset ) mod N, or,
  • SFN_Cell2 ( SFN_Celll + SFN_offset ) mod N.
  • the eNB1 sends, to the UE1, a handover command for switching to the cell 2.
  • the foregoing switching command may carry the identifier of the cell 2, the frequency of the cell 2, and the random access information (or other radio resource configuration information), and of course, may further carry other information that is required to be carried by the existing handover command.
  • the UE1 initiates random access to the eNB2 according to the received handover command, and establishes a connection with the eNB2 to switch to the cell 2.
  • the UE1 determines, according to the calculated system frame number of the cell 2, the location of the cell 2 common control channel and the system message, so as to search for and receive the paging message of the cell 2 and other related system messages.
  • the serving eNB of the cell 1 currently in the UE determines that the measurement result of the cell 2 is better than the measurement result of the cell 1 according to the measurement report of the UE, the UE needs to switch from the cell 1 to the cell 2, then The eNB sends an offset between the system frame numbers of the cell 1 and the cell 2 to the UE before the UE detaches the cell 1.
  • another cell handover control method provided by an embodiment of the present invention may include the following inner valleys:
  • eNB1 obtains the current load ratio of cell 1 and cell 2.
  • the eNB 1 is the serving eNB of the cell 1
  • the eNB 2 is the serving eNB of the cell 2
  • the UE 1 Currently, it resides in cell 1, cell 2 and cell 1 are neighboring cells, cell 1 is a macro cell, and 0611 2 is a micro cell based on 0 ⁇ technology as an example.
  • the eNB1 determines that the UE1 needs to be switched from cell 1 to cell 2.
  • the eNB1 notifies the UE 1 of an offset between system frame numbers of cell 1 and cell 2.
  • the eNB1 may notify the UE 1 of the offset between the system frame numbers of the cell 1 and the cell 2 through the UE-specific high-level signaling; or, the eNB1 may also broadcast the message to the UE through the system.
  • the eNB1 may also notify the UE 1 of the number of antenna ports and the downlink bandwidth of the cell 2, and may further notify the UE 1 of the PBCH bearer of the cell 2. Other configuration information, etc.
  • SFN_offset ( SFN_Cell2-SFN_Celll ) mod N
  • SFN_Celll refers to the system frame number of cell 1
  • SFN_Cell2 refers to the system frame number of cell 2
  • mod refers to the modulo operation
  • N is the maximum system frame number of cell 1 and cell 2 plus 1
  • SFN_offset is cell 1 and cell. The offset between the system frame numbers of 2.
  • the UE1 calculates a system frame number of the cell 2 according to the system frame number (SFN_Celll) of the source cell 1 and the system frame number difference (SFN_offset) of the source cell 1 and the target cell 2.
  • SFN_Cell2 ( SFN_Celll - SFN_offset ) mod N,
  • SFN_Cell2 ( SFN_Celll + SFN_offset ) mod N.
  • the eNB1 sends, to the UE1, a handover command for switching to the cell 2.
  • the foregoing switching command may carry the identifier of the cell 2, the frequency of the cell 2, and the random access information (or other radio resource configuration information), and of course, may further carry other information that is required to be carried by the existing handover command.
  • the UE1 initiates a random access to the eNB2 according to the received handover command, and establishes a connection with the eNB2 to switch to the cell 2.
  • the UE1 determines, according to the calculated system frame number of the cell 2, the location of the cell 2 common control channel and the system message, so as to search for and receive the paging message of the cell 2 and other related system messages.
  • the serving eNB of the cell 1 currently in which the UE is located is determined according to the load situation.
  • the UE needs to switch from cell 1 to cell 2, and the eNB sends an offset between the system frame numbers of cell 1 and cell 2 to the UE before the UE detaches the cell 1; the UE switches from cell 1 to After cell 2, according to the current system frame number of cell 1, and the offset between the cell 2 and the system frame number indicated by the indication, the current system frame number of cell 2 is calculated, and the cell 2 is After the serving eNB establishes the connection, the UE may search for the system message and/or the paging message of the cell 2 according to the calculated system frame number of the cell 2.
  • another cell handover control method provided by an embodiment of the present invention may include the following content:
  • the UE 1 measures the downlink synchronization channel and the common pilot channel of the cell 1 and the cell 2, and reports the measurement report to the eNB1.
  • the eNB1 is the serving eNB of the cell 1
  • the eNB2 is the serving eNB of the cell 2.
  • the UE 1 is currently in the cell 1, the cell 2 and the cell 1 are the neighboring cells, and the cell 1 is the macro cell, and the 0611 is Take the micro-area based on 0 ⁇ technology as an example.
  • the measurement report of the UE1 determines that the measurement result of the cell 2 is better than the measurement result of the cell 1 (for example, RSRP-Celll ⁇ RSRP-Cell2+offset), it is determined that the UE1 needs to be switched from the cell 1 to the cell 2. .
  • the eNB1 sends, to the UE1, a handover command for switching to the cell 2.
  • the handover command may carry: an offset between the system frame numbers of the cell 1 and the cell 2, and may also carry the identifier of the cell 2, and may also carry the frequency of the cell 2 and random access information (or other radio resource configuration information). .
  • SFN_offset ( SFN_Cell2 - SFN_Celll ) mod N, where SFN_Celll refers to the system frame number of cell 1, SFN_Cell2 refers to the system frame number of cell 2, mod refers to the modulo operation, and N is the maximum system of cell 1 and cell 2. The frame number is incremented by 1, and SFN_offset is the offset between the system frame numbers of cell 1 and cell 2.
  • the UE1 is notified according to the system frame number (SFN_Celll) of the known source cell 1
  • SFN_offset system frame number difference
  • SFN_Cell2 (SFN_Celll - SFN_offset) mod N
  • SFN_Cell2 ( SFN_Celll + SFN_offset ) mod N.
  • the UE1 initiates random access to the eNB2 according to the received handover command, and establishes a connection with the eNB2 to switch to the cell 2.
  • the UE1 determines, according to the calculated system frame number of the cell 2, the location of the cell 2 common control channel and the system message, so as to search for and receive the paging message and other related system messages of the cell 2.
  • the serving eNB of the cell 1 currently in the UE determines that the measurement result of the cell 2 is better than the measurement result of the cell 1 according to the measurement report of the UE, the UE needs to switch from the cell 1 to the cell 2, then The eNB sends an offset between the system frame numbers of the cell 1 and the cell 2 to the UE before the UE detaches the cell 1.
  • the UE After the UE switches from the cell 1 to the cell 2, according to the current system frame number of the cell 1, Deducting the offset between the cell 2 and the system frame number of the cell 1 indicated by the indication, and deriving the current system frame number of the cell 2, after establishing a connection with the serving eNB of the cell 2, the UE may calculate according to the The system frame number of cell 2 searches for system messages and/or paging messages of cell 2. Based on this mechanism, after the UE is switched to the target cell 2, the UE can accurately obtain the current system frame number of the cell 1 based on the offset between the received cell 2 and the system frame number of the cell 1. The continuity of communication.
  • the embodiment of the present invention further provides a related device for implementing the above solution.
  • the access device 700 provided by the embodiment of the present invention may include:
  • the acquisition unit 710, the generation unit 720, and the transmitter 730 are the acquisition unit 710, the generation unit 720, and the transmitter 730.
  • the obtaining unit 710 is configured to acquire a correspondence between a system frame number of the second cell and a system frame number of the first cell where the UE resides.
  • the first cell and the second cell are, for example, neighbor cells. If the access device 700 is the first cell
  • the service access device may obtain the correspondence between the system frame number of the second cell and the system frame number of the first cell according to the neighboring cell configuration information, or the obtaining unit 710 may also be the second cell.
  • the service access device acquires a correspondence between a system frame number of the second cell and a system frame number of the first cell.
  • the generating unit 720 is configured to generate a frame number relationship indication, where the frame number relationship indication is used to indicate a correspondence between a system frame number of the second cell and a system frame number of the first cell;
  • the transmitter 730 is configured to send, to the UE, a frame number relationship indication generated by the generating unit 720 before the UE switches to the second cell.
  • the transmitter 730 can send the frame number relationship indication generated by the generating unit 720 to the UE at any time before the UE switches to the second cell.
  • the transmitter 730 may be specifically configured to send, by using the high layer signaling or other message, the frame number relationship indication generated by the generating unit 720 to the UE.
  • the transmitter 730 may be configured to: send, by using the radio resource control signaling, the frame number relationship indication generated by the generating unit 720 to the UE; or send the generating unit 720 to the UE by using a system broadcast message.
  • the frame number relationship indication may be configured to: send, by using the radio resource control signaling, the frame number relationship indication generated by the generating unit 720 to the UE; or send the generating unit 720 to the UE by using a system broadcast message.
  • the transmitter 730 may be configured to: send, to the UE, a handover command to switch from the first cell to the second cell, where the handover command carries a frame number relationship indication generated by the generating unit 720,
  • the handover command may further carry an identifier of the second cell, random access information of the second cell, and the like.
  • the The frame number relationship indication is used to indicate the other correspondence.
  • the UE that is camped on the first cell knows the change rule of the system frame number of the first cell (for example, periodically changes with time), so that the current system frame number of the first cell can be known, and therefore, the UE can be based on the first The current system frame number of the cell, and the frame number relationship indicates the correspondence between the indicated system frame number of the second cell and the system frame number of the first cell, to calculate the current system frame number of the second cell.
  • the access device 700 may send the UE to the UE after the UE is switched from the first cell to the second cell, for example, after determining that the UE needs to be handed over from the first cell to the second cell.
  • Frame number relationship indication may be used to indicate that the UE needs to be handed over from the first cell to the second cell.
  • the transmitter 730 may send a frame number relationship indication to the UE not only before the UE switches from the first cell to the second cell (such as any time before the UE de-attaches the first cell).
  • the antenna port number information and/or the downlink bandwidth information of the second cell may be sent to the UE before the UE is switched from the first cell to the second cell, and may also be switched from the first cell to the second in the UE.
  • further configuration information and the like of the PBCH bearer of the second cell are further sent to the UE.
  • the access device 700 may further include:
  • the determining unit 740 is configured to determine that the UE needs to be handed over from the first cell to the second cell.
  • the determining unit 740 can determine, for example, that the UE needs to be handed over from the first cell to the second cell in multiple manners.
  • the determining unit 740 may receive the measurement report reported by the UE.
  • the signal quality of the second cell is determined according to the measurement report, and the signal quality is better than the first cell after the offset is set, determining that the UE needs to be from the first
  • the cell is switched to the second cell, or if the signal quality of the second cell is better than the signal quality of the first cell according to the measurement report, it may be determined that the UE needs to be switched from the first cell to the second cell
  • the first cell is a macro cell
  • the second cell is a micro cell (such as a micro cell or a common micro cell based on CRE technology) or a macro cell.
  • determining unit 740 may obtain a load ratio of the first cell and the second cell.
  • the determining unit 740 may receive the measurement report reported by the UE, and obtain a load ratio of the first cell and the second cell, and determine, according to the measurement, that the signal quality of the second cell is higher than the setting after the setting of the offset.
  • the determining unit 740 may determine that the UE needs to be handed over from the first cell to the second cell. Certainly, the determining unit 740 may further determine that the UE needs to be switched from the first cell to the second cell by using other methods, which are not exemplified herein.
  • the access device 700 in this embodiment may be the access device in the foregoing method embodiment, and the functions of the respective functional modules may be specifically implemented according to the method described in the foregoing method embodiment. Related descriptions in the embodiments are not described herein again.
  • the access device 700 obtains a correspondence between a system frame number of the second cell and a system frame number of the first cell where the UE resides; before the UE switches to the second cell, the UE is sent to the UE. And transmitting the generated frame number relationship indication for indicating a correspondence between a system frame number of the second cell and a system frame number of the first cell. Based on this mechanism, the UE can accurately know the current system frame number of the second cell after switching to the second cell, thereby facilitating the continuity of the UE communication.
  • the user equipment 800 provided by the embodiment of the present invention may include: a receiver 810 and a derivation unit 820.
  • the receiver 810 is configured to receive, after the first cell is switched to the second cell, a frame number relationship indication sent by the serving access device of the first cell, where the frame number relationship indication is used to indicate a system frame number of the second cell. Corresponding relationship with the system frame number of the first cell;
  • the estimating unit 820 is configured to: according to the system frame number of the first cell, and the frame number relationship received by the receiver 810, indicate the correspondence between the indicated system frame number of the second cell and the system frame number of the first cell, and determine The system frame number of the second cell.
  • the receiver 810 is specifically configured to receive a frame number relationship indication sent by the service access device of the first cell by using the high layer signaling.
  • the receiver 810 is specifically configured to: receive a frame number relationship indication sent by the service access device of the first cell by using the radio resource control signaling; or receive a frame number sent by the service access device of the first cell by using a system broadcast message. Relationship indication.
  • the receiver 810 is specifically configured to receive a handover command that is sent by the serving access device of the first cell to switch from the first cell to the second cell, where the handover command carries a frame number relationship indication.
  • the receiver 810 is further configured to: before receiving the handover from the first cell to the second cell, receive the number of antenna port numbers of the second cell sent by the serving access device of the first cell, and/or Or downlink bandwidth information.
  • the frame number relationship indication is used to indicate the other correspondence.
  • the UE that has camped in the first cell knows the change rule of the system frame number of the first cell (for example, periodically changes with time), so that the current system frame number of the first cell can be known, and therefore, the estimating unit 820 can The current system frame number of the first cell, and the frame number relationship indicates a correspondence between the indicated system frame number of the second cell and the system frame number of the first cell, to calculate a current system frame number of the second cell.
  • the user equipment 800 may further include:
  • the searching unit 830 is configured to search for the system message and/or paging of the second cell according to the system frame number of the second cell calculated by the estimating unit 820 after the user equipment 800 establishes a connection with the serving access device of the second cell. Message.
  • the user equipment 800 in this embodiment may be the user equipment in the foregoing method embodiment, and the functions of the functional modules may be implemented according to the method described in the foregoing method embodiment.
  • the specific implementation process refer to the foregoing embodiment. The related description will not be repeated here.
  • the serving access device of the first cell sends a system frame number indicating the second cell to the first cell to the user equipment 800 before the user equipment 800 switches from the first cell to the second cell.
  • the frame number relationship of the correspondence between the system frame numbers indicates that the user equipment 800 indicates the system frame number of the second cell and the system of the first cell according to the system frame number of the first cell and the frame number relationship.
  • the correspondence between the frame numbers determines the system frame number of the second cell. Based on this mechanism, the user equipment 800 can accurately learn the current system of the second cell after switching from the first cell to the second cell.
  • the frame number is further improved to ensure the continuity of the communication of the user equipment 800.
  • the embodiment of the invention provides a communication system, which may include:
  • Access device 910 and user equipment 920 are configured to communicate with each other.
  • the access device 910 is configured to acquire a correspondence between a system frame number of the second cell and a system frame number of the first cell where the user equipment 920 resides, and generate a frame number relationship indication, where the frame number relationship indication is used.
  • the mapping between the system frame number of the second cell and the system frame number of the first cell is indicated; before the user equipment 920 switches to the second cell, the generated frame number relationship indication is sent to the user equipment 920.
  • the first cell and the second cell are, for example, neighbor cells. If the access device 910 is the serving access device of the first cell, the access device may obtain the correspondence between the system frame number of the second cell and the system frame number of the first cell according to the neighboring area configuration information, or The serving access device of the first cell may also obtain a correspondence between the system frame number of the second cell and the system frame number of the first cell from the serving access device of the second cell.
  • the user equipment 920 is configured to receive a frame number relationship indication sent by the service access device of the first cell before switching to the second cell, where the system frame number of the first cell is indicated, and the frame number relationship indication is indicated Corresponding relationship between the system frame number of the second cell and the system frame number of the first cell, and determining a system frame number of the second cell.
  • the access device 910 can send the generated frame number relationship indication to the user equipment 920 at any time before the user equipment 920 switches to the second cell.
  • the access device 910 can send the above frame number relationship indication to the user equipment 920 via higher layer signaling or other type of message.
  • the access device 910 may send the foregoing frame number relationship indication to the user equipment 920 by using radio resource control signaling; or the access device 910 may send the foregoing frame number relationship indication to the user equipment 920 by using a system broadcast message.
  • the access device 910 may also send a handover command from the first cell to the second cell to the user equipment 920, where the handover command carries the frame number relationship indication.
  • the handover command may also carry the identity of the second cell, random access information (or other radio resource configuration information), and/or frequency information of the second cell, and the like.
  • the frame number relationship indication is used to indicate the other correspondence.
  • the UE that is camped on the first cell knows the change rule of the system frame number of the first cell (for example, periodically changes with time), so that the current system frame number of the first cell can be known, and therefore, the UE can be based on the first
  • the current system frame number of the cell, and the frame number relationship indicates the correspondence between the indicated system frame number of the second cell and the system frame number of the first cell, to calculate the current system frame number of the second cell.
  • the embodiment of the invention provides a communication system, which may include: an access device 700.
  • the embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium can store a program, and the program includes some or all of the steps of the data processing method described in the foregoing method embodiments.
  • the serving access device of the first cell sends a system frame number indicating the second cell and the first to the UE before the UE switches from the first cell to the second cell.
  • the frame number relationship of the correspondence between the system frame numbers of the cells indicates that the UE indicates the system frame number of the second cell and the system frame of the first cell according to the system frame number of the first cell and the frame number relationship.
  • the correspondence between the numbers determines the system frame number of the second cell. Based on this mechanism, the UE can accurately know the current system frame number of the second cell after switching from the first cell to the second cell, thereby facilitating the continuity of the UE communication.
  • the program can be stored in a computer readable storage medium, for example, the storage medium can include : Read Only Memory, Random Access Memory, Disk or Disc Wait.

Abstract

一种小区配置信息的通知方法及相关装置和系统。其中,一种小区配置信息的通知方法,包括:接入设备获取第二小区的系统帧号与用户设备驻留的第一小区的系统帧号之间对应关系;接入设备生成帧号关系指示,其中,帧号关系指示用于指示第二小区的系统帧号与第一小区的系统帧号之间对应关系;接入设备在用户设备切换到第二小区之前向用户设备发送帧号关系指示。本发明实施例方案可使UE能相对准确的获取到切换目标小区的系统帧号。

Description

小区配置信息的通知方法及相关装置和系统 技术领域
本发明涉及通信技术领域,具体涉及小区配置信息的通知方法和小区切换 控制方法及相关装置和系统。 背景技术
目前, 在异构网络的部署中, 宏微小区联合部署是一种典型场景。
在宏微小区联合部署的场景中, 由于微小区发射功率受限,覆盖范围通常 比较小。 为了扩展微小区的覆盖范围, 从而更好的分流宏小区的流量, 通常会 采用一种小区扩展(CRE, cell range expansion )技术。 基于 CRE技术, 微小区 的覆盖范围会被刻意扩展, 扩展方式是: 对于传统宏小区选择, 基站将 UE选 择到参考信号接收功率(RSRP, Reference Signal Receiving Power )最强的宏 小区; 但是对于扩展微小区, 基站先给微小区的下行信号的 RSRP-pico加上一 个偏置 offset,变成 offset+RSRP-pico,如此,即使宏小区的下行信号 RSRP-macro 较强, 但只要 RSRP-macro <offset+RSRP-pico , 基站仍然可能选择将 UE切换到 该微小区。
实践发现,若基站基于 CRE技术提前发起用户设备( UE, User Equipment ) 的宏微小区切换, 有可能因邻区干扰等问题存在, 可能导致 UE在切换到微小 区后无法正确从该微小区的物理广播信道接收小区配置信息(如小区系统帧号 等)。
发明内容
本发明实施例提供一种小区配置信息的通知方法、小区切换控制方法以及 相关装置和通信系统, 以期使 UE能相对准确的获取到切换目标小区的相关配 置信息。
本发明实施例一方面提供一种小区配置信息的通知方法, 包括:
接入设备获取第二小区的系统帧号与用户设备驻留的第一小区的系统帧 号之间对应关系;
所述接入设备生成帧号关系指示, 其中, 所述帧号关系指示用于指示所述 第二小区的系统帧号与第一小区的系统帧号之间对应关系;
所述接入设备在所述用户设备切换到第二小区之前,向所述用户设备发送 所述帧号关系指示 (待定稿后补上)
本发明实施例另一方面还提供一种小区配置信息的通知方法, 包括: 驻留在第一小区的用户设备在切换到第二小区之前,接收第一小区的服务 接入设备发送的帧号关系指示,所述帧号关系指示用于指示所述第二小区的系 统帧号与第一小区的系统帧号之间对应关系;
所述用户设备^^据所述第一小区的系统帧号,和所述帧号关系指示所指示 出的所述第二小区的系统帧号与第一小区的系统帧号之间对应关系,确定所述 第二小区的系统帧号
本发明实施例另一方面还提供一种接入设备, 包括:
获取单元,用于获取第二小区的系统帧号与用户设备驻留的第一小区的系 统帧号之间对应关系;
生成单元, 用于生成帧号关系指示, 其中, 所述帧号关系指示用于指示所 述第二小区的系统帧号与第一小区的系统帧号之间对应关系;
发送器, 用于在所述用户设备切换到第二小区之前, 向所述用户设备发送 所述帧号关系指示。
本发明实施例另一方面还提供一种用户设备, 包括:
接收器, 用于从第一小区切换到第二小区之前,接收第一小区的服务接入 设备发送的帧号关系指示,所述帧号关系指示用于指示所述第二小区的系统帧 号与第一小区的系统帧号之间对应关系;
推算单元, 用于根据所述第一小区的系统帧号, 和所述帧号关系指示所指 示出的所述第二小区的系统帧号与第一小区的系统帧号之间对应关系,确定所 述第二小区的系统帧号。
本发明实施例另一方面还提供一种通信系统, 包括:
如上述实施例所述的接入设备。
本发明实施例另一方面还提供一种计算机存储介质,所述计算机存储介质 存储有程序, 所述程序执行时包括如上述方法实施例所述的部分或全部步骤。 由上可见, 本发明实施例提供的技术方案中,接入设备获取第二小区的系 统帧号与 UE驻留的第一小区的系统帧号之间对应关系; 在该 UE切换到第二小 区之前, 向该 UE发送该生成的用于指示第二小区的系统帧号与第一小区的系 统帧号之间对应关系的帧号关系指示。 基于此机制, 使得 UE在切换到第二小 区之后可准确获知第二小区当前的系统帧号, 进而有利于保证 UE通信的持续 性。 附图说明
为了更清楚地说明本发明实施例的技术方案,下面将对实施例描述所需要 使用的附图作筒单地介绍,显而易见地, 下面描述中的附图仅仅是本发明的一 些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还 可以根据这些附图获得其他的附图。
图 1是本发明实施例提供的一种宏小区和微小区相邻的示意图;
图 2是本发明实施例提供的一种小区配置信息的通知方法的流程示意图; 图 3是本发明实施例提供的另一种小区配置信息的通知方法意图; 图 4是本发明实施例提供的另一种小区切换控制方法的流程示意图; 图 5是本发明实施例提供的另一种小区切换控制方法的流程示意图; 图 6是本发明实施例提供的另一种小区切换控制方法的流程示意图; 图 7-a是本发明实施例提供的一种接入设备的示意图;
图 7-b是本发明实施例提供的另一种接入设备的示意图;
图 8-a是本发明实施例提供的一种用户设备的示意图;
图 8-b是本发明实施例提供的另一种用户设备的示意图;
图 9是是本发明实施例提供的一通信系统的示意图。 具体实施方式
本发明实施例提供一种小区配置信息的通知方法、小区切换控制方法以及 相关装置和通信系统, 以期使 UE能相对准确的获取到切换目标小区的相关配 置信息。
下面通过具体实施例, 分别进行详细的说明。
为使得本发明的发明目的、 特征、 优点能够更加的明显和易懂, 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, 下面所描述的实施例仅仅是本发明一部分实施例, 而非全部的实施 例。基于本发明中的实施例, 本领域普通技术人员在没有做出创造性劳动前提 下所获得的所有其它实施例, 都属于本发明保护的范围。
本发明的说明书和权利要求书及上述附图中的术语 "第一"、 "第二"、 "第 三" "第四" 等(如果存在)是用于区别类似的对象, 而不必用于描述特定的 顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换, 以便这里 描述的本发明的实施例例如能够以除了在这里图示或描述的那些以外的顺序 实施。 此外, 术语 "包括" 和 "具有" 以及他们的任何变形, 意图在于覆盖不 排他的包含, 例如, 包含了一系列步骤或单元的过程、 方法、 系统、 产品或设 备不必限于清楚地列出的那些步骤或单元,而是可包括没有清楚地列出的或对 于这些过程、 方法、 产品或设备固有的其它步骤或单元。
首先说明的是,本发明实施例所指接入设备是指可实现用户设备无线接入 管理功能的实体,而接入设备和移动性管理网元在不同的网络中可能具有不同 的名称、 位置和产品形态。
举例来说, 本发明下述实施例中提及的接入设备例如可指: 演进通用移动 通信系统(UMTS, Universal Mobile Telecommunications System ) 陆地无线接 入网 (E-UTRAN, Evolved UMTS Territorial Radio Access Network ) 中的演进 基站(eNodeB )、 家庭基站( HeNB )或其它类型的基站; 或 UMTS陆地无线 接入网 ( UTRAN, UMTS Territorial Radio Access Network ) I GSM EDGE无线 接入网 (GERAN, GSM EDGE Radio Access Network ) 中的基站控制器、 或无 线网络控制器(RNC, Radio Network Controller ); 或者也可指宽带码分多址接 入( CDMA, Code Division Multiple Access ) 网络中具有高速率分组数据接入 网 ( HRPD-AN, High Rate Packet Data Access Network )接入网逻辑功能的实 体、 无线局域网 (WLAN, Wireless Local Area Network ) 中具有演进分组数据 网关( EPDG, Evolved Packet Data Gateway )接入网逻辑功能的实体; 微波存 取全球互通 ( WiMAX, Worldwide Interoperability for Microwave Access ) 网给 中的接入服务网络基站( ASN-BS , Access Service Network Base Station )或其 它网络中实现终端无线接入管理的实体。
参见图 1 , 图 1中相邻的两个小区 cell 1、 cell 2分别为微小区 ( cell 1 )和微 小区(cell 2 )。 根据 CRE技术, 可产生 1个 CRE区域(如图 1中阴影区域), 在这 个 CRE区域, 来自服务小区 (此处假设 cell 2为服务小区) 的信号强度很可能 小于邻区 ( cell 1 )信号强度, 在一些极端的情况下, 邻区 cell 1的干扰信号可 能导致 UE无法正确接收服务小区的重要的公共控制信道所承载信息, 特别是 物理广播信道 ( PBCH, Physical broadcasting channel )。 特别是对于 UE从 cell 1 切换到 cell 2的 CRE区域的情况, 由于是提前发起的切换, 可能导致该 UE在切 换到 cell 2之后, 发现其无法正确的接收 cell 2的 PBCH所承载信息, 导致 UE通 信中断。 其中, 一种可能的解决方式是, 在切换过程中, 源小区 (cell 1 ) 的 服务基站通过高层信令把目标小区( cell 2 ) PBCH所承载的重要配置信息通知 给 UE,这样,可以在一定的程度上解决 UE在切换到 cell 2后无法正确接收 PBCH 所承载信息而导致通信中断的问题。
研究和实践发现, 由于 PBCH承载了很多重要配置信息, 包括小区天线端 口个数、 小区下行带宽和小区系统帧号 ( SFN, system frame number )等。 其 中小区天线端口个数、 小区下行带宽等信息都是静态或半静态改变的,通过高 层信令来通知是可能的。 但是, SFN是随着时间改变而改变的, 由于高层信令 的时延以及重传等问题, 艮可能无法通过源小区 (cell l ) 的高层信令来获 取到目标小区 (cell 2 ) 的正确系统帧号。
下面继续探究其它解决方案。 本发明小区配置信息的通知方法的一个实施例, 可包括: 接入设备获取第 二小区的系统帧号与 UE驻留的第一小区的系统帧号之间对应关系; 生成帧号 关系指示, 其中, 该帧号关系指示用于指示第二小区的系统帧号与第一小区的 系统帧号之间对应关系; 在该 UE切换到第二小区之前, 向该 UE发送该生成的 帧号关系指示。
参见图 2, 本发明实施例提供的一种小区配置信息的通知方法, 可包括以 下内容:
201、接入设备获取第二小区的系统帧号与 UE驻留的第一小区的系统帧号 之间对应关系;
其中, 第一小区和第二小区例如为相邻小区。若接入设备为第一小区的服 务接入设备,则该接入设备可根据邻区配置信息获取到第二小区的系统帧号与 第一小区的系统帧号之间对应关系, 或者, 该第一小区的服务接入设备也可从 第二小区的服务接入设备来获取第二小区的系统帧号与第一小区的系统帧号 之间对应关系。
202、 接入设备生成帧号关系指示,
其中,该帧号关系指示用于指示第二小区的系统帧号与第一小区的系统帧 号之间对应关系;
203、 接入设备在上述 UE切换到第二小区之前, 向该 UE发送该生成的帧 号关系指示。
在本发明实施例中, 接入设备可通过多少方式, 在上述 UE切换到第二小 区之前的任意时刻, 向该 UE发送该生成的帧号关系指示。 例如, 接入设备可 通过高层信令或其它类型的消息向上述 UE发送上述帧号关系指示。 例如接入 设备可通过无线资源控制信令向该 UE发送上述帧号关系指示; 或接入设备可 通过系统广播消息向该 UE发送上述帧号关系指示。 或接入设备也可向该 UE发 送从第一小区向第二小区切换的切换命令, 其中, 该切换命令中携带上述帧号 关系指示。 此外, 该切换命令还可携带第二小区的标识、 随机接入信息(或其 它无线资源配置信息 )和 /或第二小区的频率信息等。
在本发明实施例中,用于指示第二小区的系统帧号与第一小区的系统帧号 之间对应关系的帧号关系指示,例如可用于指示出第二小区的系统帧号与第一 小区的系统帧号之间的偏置(此处,假设第二小区的系统帧号与第一小区的系 统帧号之间的偏置在一定时间段内固定不变),其中,假设以 SFN_offset来表示 第二小区的系统帧号与第一小区的系统帧号之间的偏置, 则该偏置 SFN_offset 例如可为: SFN_offset = ( SFN_Celll— SFN_Cell2 ) mod N, 或者, SFN_offset = ( SFN_Cell2-SFN_Celll ) mod N; 其中, N为第一小区或第二小区的最大系 统帧号加 1 , SFN_Celll为第一小区的系统帧号、 SFN_Cell2为第二小区的系统 帧号。 当然, 若第二小区与第一小区的系统帧号之间存在其它对应关系, 则该 帧号关系指示用于指示出该其它对应关系。 在第一小区驻留过的 UE知悉第一 小区的系统帧号的变化规律(例如会随着时间周期性变化), 故而能够知悉第 一小区当前的系统帧号, 因此, UE能够根据第一小区当前的系统帧号, 和该 帧号关系指示所指示的第二小区的系统帧号与第一小区的系统帧号间的对应 关系, 来推算出第二小区当前的系统帧号。
由上可见, 本实施例中接入设备获取第二小区的系统帧号与 UE驻留的第 一小区的系统帧号之间对应关系; 在该 UE切换到第二小区之前, 向该 UE发送 该生成的用于指示第二小区的系统帧号与第一小区的系统帧号之间对应关系 的帧号关系指示。 基于此机制, 使得 UE在切换到第二小区之后可准确获知第 二小区当前的系统帧号, 进而有利于保证 UE通信的持续性。
在本发明的一实施例中, 第一小区的服务接入设备不仅可在 UE从第一小 区切换到第二小区之前(如在该 UE去附着第一'』、区之前的任意时刻),向该 UE 发送帧号关系指示, 还可在该 UE从第一小区切换到第二小区之前, 向该 UE发 送第二小区的天线端口数信息和 /或下行带宽信息, 当然还可在该 UE从第一小 区切换到第二小区之前,进一步向该 UE发送第二小区的 PBCH承载的其它配置 信息等。
在本发明的一实施例中, 接入设备例如可在确定需将 UE从第一小区向第 二小区进行切换之后, 在该 UE从第一'』、区切换到第二小区之前, 向该 UE发送 帧号关系指示。 其中, 接入设备例如可通过多种方式来确定需将 UE从第一小 区向第二小区进行切换。 例如, 接入设备可接收 UE上报的测量报告; 接入设 备若根据该测量报告确定出第二小区的信号质量加上设定偏置之后优于第一 小区的信号质量, 则确定出需将 UE从第一小区向第二小区进行切换, 或者若 根据该测量报告确定出第二小区的信号质量优于第一小区的信号质量,则接入 设备可确定出需将该 UE从第一小区向第二小区进行切换, 其中, 第一小区为 宏小区, 第二小区为微小区(该微小区例如如为基于 CRE技术的微小区或普通 微小区)或宏小区。 或, 接入设备可获取第一小区和第二小区的负载比例; 若 第一小区的负载比例高于第二小区的负载比例, 则可确定出需将 UE从第一小 区向第二小区进行切换, 或者, 若第一小区的负载比例高于设定第一阈值, 且 第一小区的负载比例高于第二小区的负载比例, 则可确定出需将 UE从第一小 区向第二小区进行切换。 或者, 接入设备可接收 UE上报的测量报告, 接入设 备获取第一小区和第二小区的负载比例,若根据该测量报告确定出第二小区的 信号质量加设定偏置之后优于设定第二阈值,且第一小区的负载比例高于第二 小区的负载比例, 则接入设备可确定出需将 UE从第一小区向第二小区进行切 换。 当然, 接入设备还可通过其它方式现有, 来确定需将 UE从第一小区向第 二小区进行切换, 此处不再——举例。 本发明小区配置信息的通知方法的一实施例, 可包括: 驻留在第一小区的 UE在切换到第二小区之前, 接收第一小区的服务接入设备发送的帧号关系指 示,该帧号关系指示用于指示第二小区的系统帧号与第一小区的系统帧号之间 对应关系; 该 UE 居第一小区的系统帧号, 和该帧号关系指示所指示出的该 第二小区的系统帧号与第一小区的系统帧号之间对应关系,确定该第二小区的 系统帧号。
参见图 3 , 本发明实施例提供的一种小区配置信息的通知方法, 可包括以 下内容:
301、 驻留在第一小区的 UE在切换到第二小区之前, 接收第一小区的服务 接入设备发送的帧号关系指示, 其中, 该帧号关系指示用于指示第二小区的系 统帧号与第一小区的系统帧号之间对应关系;
其中, 第一小区和第二小区例如为相邻小区。
在本发明的一实施例中, 第一小区的服务接入设备不仅可在上述 UE从第 一小区切换到第二小区之前(如在该 UE去附着第一小区之前的任意时刻 ), 向 该 UE发送帧号关系指示, 还可在该 UE从第一小区切换到第二小区之前, 向该 UE发送第二小区的天线端口数信息和 /或下行带宽信息,当然还可在该 UE从第 一小区切换到第二小区之前,进一步向该 UE发送第二小区的 PBCH承载的其它 配置信息等, 而 UE则还可进一步在切换到第二小区之前, 接收第一小区的服 务接入设备发送的第二小区的天线端口数信息和 /或下行带宽信息等。
在本发明实施例中, 接入设备可通过多少方式, 在上述 UE切换到第二小 区之前的任意时刻, 向该 UE发送该生成的帧号关系指示。 举例来说, 驻留在 第一小区的 UE在切换到第二小区之前, 可接收第一小区的服务接入设备通过 高层信令或其它类型的消息发送的帧号关系指示。 例如, 驻留在第一小区的
UE在切换到第二小区之前, 可接收第一小区的服务接入设备通过无线资源控 制信令发送的帧号关系指示; 或者,接收第一小区的服务接入设备通过系统广 播消息发送的帧号关系指示。 或者, 驻留在第一小区的 UE在切换到第二小区 之前, 可接收第一小区的服务接入设备向该 UE发送的从第一小区向第二小区 进行切换的切换命令, 其中, 切换命令携带有该帧号关系指示。 此外, 该切换 命令还可携带第二小区的标识、 随机接入信息(或其它无线资源配置信息 )和 /或第二小区的频率信息等。
303、 上述 UE 居第一小区的系统帧号, 和该帧号关系指示所指示出的该 第二小区的系统帧号与第一小区的系统帧号之间对应关系,确定该第二小区的 系统帧号。
在本发明实施例中,用于指示第二小区的系统帧号与第一小区的系统帧号 之间对应关系的帧号关系指示,例如可用于指示出第二小区的系统帧号与第一 小区的系统帧号之间的偏置(此处,假设第二小区的系统帧号与第一小区的系 统帧号之间的偏置在一定时间段内固定不变),其中,假设以 SFN_offset来表示 第二小区的系统帧号与第一小区的系统帧号之间的偏置, 则该偏置 SFN_offset 例如可为: SFN_offset = ( SFN_Celll— SFN_Cell2 ) mod N, 或者, SFN_offset = ( SFN_Cell2-SFN_Celll ) mod N; 其中, N为第一小区或第二小区的最大系 统帧号加 1 , SFN_Celll为第一小区的系统帧号、 SFN_Cell2为第二小区的系统 帧号。 当然, 若第二小区与第一小区的系统帧号之间存在其它对应关系, 则该 帧号关系指示用于指示出该其它对应关系。 在第一小区驻留过的 UE知悉第一 小区的系统帧号的变化规律(例如会随着时间周期性变化), 故而能够知悉第 一小区当前的系统帧号, 因此, UE能够根据第一小区当前的系统帧号, 和该 帧号关系指示所指示的第二小区的系统帧号与第一小区的系统帧号间的对应 关系, 来推算出第二小区当前的系统帧号。
进一步的, UE在与第二小区的服务接入设备建立连接之后, 可根据确定 出的第二小区的系统帧号,确定第二小区公共控制信道及系统消息位置, 以搜 寻和接收第二小区的相关系统消息和 /或寻呼消息等。
由上可见, 本实施例中第一小区的服务接入设备在 UE从第一小区切换到 第二小区之前, 向该 UE发送用于指示第二小区的系统帧号与第一小区的系统 帧号之间对应关系的帧号关系指示, UE根据第一小区的系统帧号, 和该帧号 关系指示所指示出的该第二小区的系统帧号与第一小区的系统帧号之间对应 关系, 确定该第二小区的系统帧号。 基于此机制, 使得 UE在从第一小区切换 到第二小区之后可准确获知第二小区当前的系统帧号, 进而有利于保证 UE通 信的持续性。 为便于更好的理解实施本发明实施例的技术方案,下面通过几个在切换场 景下进行小区配置信息通知的应用场景进一步进行介绍。
参见图 4, 本发明实施例提供的另一种小区切换控制方法, 可包括以下内 谷:
401、 UE 1测量 cell 1和 cell 2的下行同步信道及公共导频信道, 并向 eNBl 上报测量报告。
本实施例中以 eNBl为 cell 1的服务 eNB, eNB2为为 cell 2的服务 eNB , UE 1 当前驻留在 cell 1 , cell 2和 cell 1为相邻小区, cell 1为宏小区、 cell 2为基于 CRE 技术的微小区为例。
402、 eNB 1若根据 UE1的测量报告确定出 cell 2的测量结果优于 cell 1的测量 结果(如, RSRP-Celll< RSRP-Cell2+offset ), 则确定需将 UE1从 cell 1向 cell 2 进行切换。
403、 eNBl向 UE 1通知 cell 1和 cell 2的系统帧号之间的偏置;
在本发明一实施例中, eNBl可通过 UE特定的高层信令, 向 UE 1通知 cell l 和 cell 2的系统帧号之间的偏置; 或者, eNBl也可通过系统广播消息, 向 UE 1 通知 cell 1和 cell 2的系统帧号之间的偏置, eNBl还可一并向 UE 1通知 cell 2的天 线端口数和下行带宽等, 当然还可进一步向 UE 1通知 cell 2的 PBCH |载的其它 配置信息等。
其中, SFN_offset = ( SFN_Celll— SFN_Cell2 ) mod N, 或者,
SFN_offset = ( SFN_Cell2— SFN_Celll ) mod N; 其中, SFN_Celll指 cell 1的系统帧号, SFN_Cell2指 cell 2的系统帧号, mod指的是取模运算, N 为 cell 1和 cell 2的最大系统帧号加 1 , 而 SFN_offset为 cell 1和 cell 2的系统帧号之间的偏置。
404、 UE1根据已知的源小区 cell 1的系统帧号 (SFN_Celll ), 和被通知的 源小区 cell 1和目标小区 cell 2的系统帧号差( SFN_offset ), 推算出 cell 2的系统 帧号, SFN_Cell2 = ( SFN_Celll - SFN_offset ) mod N, 或者,
SFN_Cell2 = ( SFN_Celll + SFN_offset ) mod N。
405、 eNBl向 UE1发送向 cell 2进行切换的切换命令;
其中,上述切换命令可携带 cell 2的标识、 cell 2的频率和随机接入信息(或 其它无线资源配置信息)等, 当然, 还可进一步携带现有切换命令所需携带的 其它信息。
406、 UE1根据接收到的上述切换命令向 eNB2发起随机接入, 建立与 eNB2 的连接, 以切换到 cell 2。
407、 UE1根据推算出的 cell 2的系统帧号, 确定 cell 2公共控制信道及系统 消息的位置, 以便搜寻并接收 cell 2的寻呼消息和其它相关系统消息。
由上可见, 本实施例中 UE当前所在 cell 1的服务 eNB若根据 UE的测量报告 确定出 cell 2的测量结果优于 cell 1的测量结果, 需将 UE从 cell 1向 cell 2进行切 换,则该 eNB在 UE去附着 cell 1之前, 向该 UE发送 cell 1和 cell 2的系统帧号之间 的偏置; 该 UE在从 cell 1切换到 cell 2之后, 根据 cell 1当前的系统帧号, 和该指 示所指示出的 cell 2与 cell 1的系统帧号之间的偏置, 推算出 cell 2当前的系统帧 号, 在与 cell 2的服务 eNB建立连接之后, UE可根据该推算出的 cell 2的系统帧 号搜寻 cell 2的系统消息和 /或寻呼消息。 基于此机制, 使得 UE在切换到目标小 区 cell 2之后, 便可基于接收到的 cell 2与 cell 1的系统帧号之间偏置, 准确获知 cell 1当前的系统帧号, 进而有利于保证 UE通信的持续性。 参见图 5 , 本发明实施例提供的另一种小区切换控制方法, 可包括以下内 谷:
501、 eNBl获取 cell 1和 cell 2当前的负载比例。
本实施例中以 eNB 1为 cell 1的服务 eNB , eNB2为为 cell 2的服务 eNB , UE 1 当前驻留在 cell 1 , cell 2和 cell 1为相邻小区, cell 1为宏小区、 0611 2为基于0^ 技术的微小区为例。
502、 若 cell 1当前的负载比例大于 cell 2当前的负载比例, 则 eNBl确定需 将 UE1从 cell 1向 cell 2进行切换。
503、 eNBl向 UE 1通知 cell 1和 cell 2的系统帧号之间的偏置;
在本发明一实施例中, eNBl可通过 UE特定的高层信令, 向 UE 1通知 cell l 和 cell 2的系统帧号之间的偏置; 或者, eNBl也可通过系统广播消息, 向 UE 1 通知 cell 1和 cell 2的系统帧号之间的偏置, eNBl还可一并向 UE 1通知 cell 2的天 线端口数和下行带宽等, 当然还可进一步向 UE 1通知 cell 2的 PBCH承载的其它 配置信息等。
其中, SFN_offset = ( SFN_Celll-SFN_Cell2 ) mod N,
或者, SFN_offset = ( SFN_Cell2-SFN_Celll ) mod N,
其中, SFN_Celll指 cell 1的系统帧号, SFN_Cell2指 cell 2的系统帧号, mod 指的是取模运算, N 为 cell 1和 cell 2的最大系统帧号加 1 , 而 SFN_offset为 cell 1 和 cell 2的系统帧号之间的偏置。
504、 UE1根据已知的源小区 cell 1的系统帧号 (SFN_Celll ), 和被通知的 源小区 cell l和目标小区 cell 2的系统帧号差( SFN_offset ), 推算出 cell 2的系统 帧号, SFN_Cell2 = ( SFN_Celll - SFN_offset ) mod N,
或者, SFN_Cell2 = ( SFN_Celll + SFN_offset ) mod N。
505、 eNBl向 UE1发送向 cell 2进行切换的切换命令;
其中,上述切换命令可携带 cell 2的标识、 cell 2的频率和随机接入信息(或 其它无线资源配置信息)等, 当然, 还可进一步携带现有切换命令所需携带的 其它信息。
506、 UE1根据接收到的上述切换命令向 eNB2发起随机接入, 建立与 eNB2 的连接, 以切换到 cell 2。
507、 UE1根据推算出的 cell 2的系统帧号, 确定 cell 2公共控制信道及系统 消息的位置, 以便搜寻并接收 cell 2的寻呼消息和其它相关系统消息。
由上可见, 本实施例中 UE当前所在 cell 1的服务 eNB根据负载情况, 确定 需将 UE从 cell 1向 cell 2进行切换, 则该 eNB在 UE去附着 cell 1之前, 向该 UE发 送 cell 1和 cell 2的系统帧号之间的偏置;该 UE在从 cell 1切换到 cell 2之后,根据 cell 1当前的系统帧号, 和该指示所指示出的 cell 2与 cell 1的系统帧号之间的偏 置, 推算出 cell 2当前的系统帧号, 在与 cell 2的服务 eNB建立连接之后, UE可 根据该推算出的 cell 2的系统帧号搜寻 cell 2的系统消息和 /或寻呼消息。 基于此 机制, 使得 UE在切换到目标小区 cell 2之后, 便可基于接收到的 cell 2与 cell 1 的系统帧号之间偏置, 准确获知 cell 1当前的系统帧号, 进而有利于保证 UE通 信的持续性。 参见图 6, 本发明实施例提供的另一种小区切换控制方法, 可包括以下内 容:
601、 UE 1测量 cell 1和 cell 2的下行同步信道及公共导频信道, 并向 eNBl 上报测量报告。
本实施例中以 eNBl为 cell 1的服务 eNB , eNB2为为 cell 2的服务 eNB , UE 1 当前驻留在 cell 1 , cell 2和 cell 1为相邻小区, cell 1为宏小区、 0611 2为基于0^ 技术的微小区为例。
602、 eNBl若 居 UE1的测量报告确定出 cell 2的测量结果优于 cell 1的测量 结果(如, RSRP-Celll< RSRP-Cell2+offset ), 则确定需将 UE1从 cell 1向 cell 2 进行切换。
603、 eNBl向 UE1发送向 cell 2进行切换的切换命令;
其中, 该切换命令可携带: cell 1和 cell 2的系统帧号之间的偏置, 还可携 带 cell 2的标识, 还可携带 cell 2的频率及随机接入信息 (或其它无线资源配置 信息。
其中, SFN_offset = ( SFN_Celll-SFN_Cell2 ) mod N,
或者, SFN_offset = ( SFN_Cell2-SFN_Celll ) mod N, 其中, SFN_Celll 指 cell 1的系统帧号, SFN_Cell2指 cell 2的系统帧号, mod指的是取模运算, N 为 cell 1和 cell 2的最大系统帧号加 1 ,而 SFN_offset为 cell 1和 cell 2的系统帧号之间 的偏置。
604、 UE1根据已知的源小区 cell 1的系统帧号 (SFN_Celll ), 和被通知的 源小区 cell 1和目标小区 cell 2的系统帧号差( SFN_offset ), 推算出 cell 2的系统 帧号, SFN_Cell2 = ( SFN_Celll - SFN_offset ) mod N,
或者, SFN_Cell2 = ( SFN_Celll + SFN_offset ) mod N。
605、 UE1根据收到的切换命令, 向 eNB2发起随机接入, 建立与 eNB2的连 接, 以切换到 cell 2。
606、 UE1根据推算出的 cell 2的系统帧号, 确定 cell 2公共控制信道及系统 消息的位置, 以便搜寻并接收 cell 2的寻呼消息和其它相关系统消息
由上可见, 本实施例中 UE当前所在 cell 1的服务 eNB若根据 UE的测量报告 确定出 cell 2的测量结果优于 cell 1的测量结果, 需将 UE从 cell 1向 cell 2进行切 换,则该 eNB在 UE去附着 cell 1之前, 向该 UE发送 cell 1和 cell 2的系统帧号之间 的偏置; 该 UE在从 cell 1切换到 cell 2之后, 根据 cell 1当前的系统帧号, 和该指 示所指示出的 cell 2与 cell 1的系统帧号之间的偏置, 推算出 cell 2当前的系统帧 号, 在与 cell 2的服务 eNB建立连接之后, UE可根据该推算出的 cell 2的系统帧 号搜寻 cell 2的系统消息和 /或寻呼消息。 基于此机制, 使得 UE在切换到目标小 区 cell 2之后, 便可基于接收到的 cell 2与 cell 1的系统帧号之间偏置, 准确获知 cell 1当前的系统帧号, 进而有利于保证 UE通信的持续性。
需要说明的是, 对于前述的各方法实施例, 为了筒单描述, 故将其都表述 为一系列的动作组合,但是本领域技术人员应该知悉, 本发明并不受所描述的 动作顺序的限制, 因为依据本发明, 某些步骤也可以采用其他顺序或者同时进 行。 其次, 本领域技术人员也应该知悉, 说明书中所描述的实施例均属于优选 实施例, 所涉及的动作和模块并不一定是本发明所必须的。
为便于更好的实施本发明实施例的上述方案,本发明实施例还提供用于实 施上述方案的相关装置。 参见图 7-a, 本发明实施例提供的接入设备 700, 可包括:
获取单元 710、 生成单元 720和发送器 730。
其中, 获取单元 710, 用于获取第二小区的系统帧号与 UE驻留的第一小区 的系统帧号之间对应关系。
其中, 第一小区和第二小区例如为相邻小区。 若接入设备 700为第一小区 的服务接入设备, 则该获取单元 710可根据邻区配置信息获取到第二小区的系 统帧号与第一小区的系统帧号之间对应关系, 或者, 获取单元 710也可从第二 小区的服务接入设备来获取第二小区的系统帧号与第一小区的系统帧号之间 对应关系。
生成单元 720, 用于生成帧号关系指示, 其中, 该帧号关系指示用于指示 第二小区的系统帧号与第一小区的系统帧号之间对应关系;
发送器 730, 用于在上述 UE切换到第二小区之前, 向该 UE发送生成单元 720生成的帧号关系指示。
在本发明实施例中, 发送器 730可通过多少方式, 在上述 UE切换到第二小 区之前的任意时刻, 向该 UE发送生成单元 720生成的帧号关系指示。
在本发明一实施例中, 发送器 730可具体用于, 通过高层信令或其它消息 向上述 UE发送生成单元 720生成的帧号关系指示。
在本发明一实施例中, 发送器 730可具体用于, 通过无线资源控制信令向 上述 UE发送生成单元 720生成的帧号关系指示; 或者, 通过系统广播消息向上 述 UE发送生成单元 720生成的帧号关系指示。
在本发明一实施例中, 发送器 730可具体用于, 向上述 UE发送向从第一小 区向第二小区进行切换的切换命令, 其中, 切换命令携带生成单元 720生成的 帧号关系指示,该切换命令还可携带第二小区的标识和第二小区的随机接入信 息等。
在本发明实施例中,用于指示第二小区的系统帧号与第一小区的系统帧号 之间对应关系的帧号关系指示,例如可用于指示出第二小区的系统帧号与第一 小区的系统帧号之间的偏置(此处,假设第二小区的系统帧号与第一小区的系 统帧号之间的偏置在一定时间段内固定不变),其中,假设以 SFN_offset来表示 第二小区的系统帧号与第一小区的系统帧号之间的偏置, 则该偏置 SFN_offset 例如可为: SFN_offset = ( SFN_Celll— SFN_Cell2 ) mod N, 或者, SFN_offset = ( SFN_Cell2-SFN_Celll ) mod N; 其中, N为第一小区或第二小区的最大系 统帧号加 1 , SFN_Celll为第一小区的系统帧号、 SFN_Cell2为第二小区的系统 帧号。 当然, 若第二小区与第一小区的系统帧号之间存在其它对应关系, 则该 帧号关系指示用于指示出该其它对应关系。 在第一小区驻留过的 UE知悉第一 小区的系统帧号的变化规律(例如会随着时间周期性变化), 故而能够知悉第 一小区当前的系统帧号, 因此, UE能够根据第一小区当前的系统帧号, 和该 帧号关系指示所指示的第二小区的系统帧号与第一小区的系统帧号间的对应 关系, 来推算出第二小区当前的系统帧号。
在本发明的一实施例中,接入设备 700例如可在确定需将 UE从第一小区向 第二小区进行切换之后, 在该 UE从第一小区切换到第二小区之前, 向该 UE发 送帧号关系指示。
在本发明的一实施例中,发送器 730不仅可在 UE从第一小区切换到第二小 区之前(如在该 UE去附着第一小区之前的任意时刻), 向该 UE发送帧号关系 指示, 还可在该 UE从第一小区切换到第二小区之前, 向该 UE发送第二小区的 天线端口数信息和 /或下行带宽信息, 当然还可在该 UE从第一小区切换到第二 小区之前, 进一步向该 UE发送第二小区的 PBCH承载的其它配置信息等。
参见图 7-b, 在本发明一实施例中, 接入设备 700还可包括:
确定单元 740, 用于确定需将 UE从第一小区向第二小区进行切换; 其中,确定单元 740例如可通过多种方式来确定需将 UE从第一小区向第二 小区进行切换。 例如, 确定单元 740可接收 UE上报的测量报告; 若根据测量报 告确定出第二小区的信号质量加上设定偏置之后优于第一小区的信号质量,则 确定出需将 UE从第一小区向第二小区进行切换, 或者若根据该测量报告确定 出第二小区的信号质量优于第一小区的信号质量, 则可确定出需将该 UE从第 一小区向第二小区进行切换,其中,第一小区为宏小区,第二小区为微小区(该 微小区例如如为基于 CRE技术的微小区或普通微小区)或宏小区。 或, 确定单 元 740可获取第一小区和第二小区的负载比例; 若第一小区的负载比例高于第 二小区的负载比例, 则可确定出需将 UE从第一小区向第二小区进行切换, 或 者, 若第一小区的负载比例高于设定第一阈值, 且第一小区的负载比例高于第 二小区的负载比例, 则可确定出需将 UE从第一小区向第二小区进行切换。 或 者, 确定单元 740可接收 UE上报的测量报告, 获取第一小区和第二小区的负载 比例,若根据该测量 告确定出第二小区的信号质量加设定偏置之后优于设定 第二阈值, 且第一小区的负载比例高于第二小区的负载比例, 则确定单元 740 可确定出需将 UE从第一小区向第二小区进行切换。 当然, 确定单元 740还可通 过其它方式现有, 来确定需将 UE从第一小区向第二小区进行切换, 此处不再 一一举例。
可以理解的是, 本实施例的接入设备 700可以如上述方法实施例中的接入 设备, 其各个功能模块的功能可根据上述方法实施例介绍的方法具体实现, 其 具体实现过程可以参见上述实施例中的相关描述, 在此不再赘述。
由上可见,本实施例中接入设备 700获取第二小区的系统帧号与 UE驻留的 第一小区的系统帧号之间对应关系; 在该 UE切换到第二小区之前, 向该 UE发 送该生成的用于指示第二小区的系统帧号与第一小区的系统帧号之间对应关 系的帧号关系指示。 基于此机制, 使得 UE在切换到第二小区之后可准确获知 第二小区当前的系统帧号, 进而有利于保证 UE通信的持续性。 参见图 8-a, 本发明实施例提供的用户设备 800, 可包括: 接收器 810和推 算单元 820。
其中, 接收器 810, 用于从第一小区切换到第二小区之前, 接收第一小区 的服务接入设备发送的帧号关系指示,该帧号关系指示用于指示第二小区的系 统帧号与第一小区的系统帧号之间对应关系;
推算单元 820, 用于根据第一小区的系统帧号, 和接收器 810接收的帧号关 系指示所指示出的第二小区的系统帧号与第一小区的系统帧号之间对应关系, 确定第二小区的系统帧号。
在本发明一实施例中, 接收器 810可具体用于, 接收第一小区的服务接入 设备通过高层信令发送的帧号关系指示。 例如, 接收器 810具体用于, 接收第 一小区的服务接入设备通过无线资源控制信令发送的帧号关系指示; 或者,接 收第一小区的服务接入设备通过系统广播消息发送的帧号关系指示。或者,接 收器 810具体用于, 接收第一小区的服务接入设备发送的从第一小区向第二小 区进行切换的切换命令, 其中, 该切换命令携带有帧号关系指示。
在本发明一实施例中, 接收器 810还可用于, 在从第一小区切换到第二小 区之前, 接收第一小区的服务接入设备发送的第二小区的天线端口数信息和 / 或下行带宽信息。
在本发明实施例中,用于指示第二小区的系统帧号与第一小区的系统帧号 之间对应关系的帧号关系指示,例如可用于指示出第二小区的系统帧号与第一 小区的系统帧号之间的偏置(此处,假设第二小区的系统帧号与第一小区的系 统帧号之间的偏置在一定时间段内固定不变),其中,假设以 SFN_offset来表示 第二小区的系统帧号与第一小区的系统帧号之间的偏置, 则该偏置 SFN_offset 例如可为: SFN_offset = ( SFN_Celll— SFN_Cell2 ) mod N, 或者, SFN_offset = ( SFN_Cell2-SFN_Celll ) mod N; 其中, N为第一小区或第二小区的最大系 统帧号加 1 , SFN_Celll为第一小区的系统帧号、 SFN_Cell2为第二小区的系统 帧号。 当然, 若第二小区与第一小区的系统帧号之间存在其它对应关系, 则该 帧号关系指示用于指示出该其它对应关系。 在第一小区驻留过的 UE知悉第一 小区的系统帧号的变化规律(例如会随着时间周期性变化), 故而能够知悉第 一小区当前的系统帧号, 因此, 推算单元 820能够根据第一小区当前的系统帧 号,和该帧号关系指示所指示的第二小区的系统帧号与第一小区的系统帧号间 的对应关系, 来推算出第二小区当前的系统帧号。
参见图 8-b, 在本发明一实施例中, 用户设备 800还可包括:
搜寻单元 830,用于在用户设备 800与第二小区的服务接入设备建立连接之 后, 根据推算单元 820推算出的第二小区的系统帧号, 搜寻第二小区的系统消 息和 /或寻呼消息。
可以理解的是, 本实施例的用户设备 800可以如上述方法实施例中的用户 设备, 其各功能模块的功能可根据上述方法实施例介绍的方法具体实现, 具体 实现过程可以参见上述实施例中的相关描述, 在此不再赘述。
由上可见, 本实施例中第一小区的服务接入设备在用户设备 800从第一小 区切换到第二小区之前, 向用户设备 800发送用于指示第二小区的系统帧号与 第一小区的系统帧号之间对应关系的帧号关系指示, 用户设备 800根据第一小 区的系统帧号,和该帧号关系指示所指示出的该第二小区的系统帧号与第一小 区的系统帧号之间对应关系, 确定该第二小区的系统帧号。 基于此机制, 使得 用户设备 800在从第一小区切换到第二小区之后可准确获知第二小区当前的系 统帧号, 进而有利于保证用户设备 800通信的持续性。 本发明实施例提供一种通信系统, 可包括:
接入设备 910和用户设备 920。
其中,接入设备 910用于, 获取第二小区的系统帧号与用户设备 920驻留 的第一小区的系统帧号之间对应关系; 生成帧号关系指示, 其中, 该帧号关系 指示用于指示第二小区的系统帧号与第一小区的系统帧号之间对应关系;在该 用户设备 920切换到第二小区之前,向用户设备 920发送该生成的帧号关系指 示。
其中, 第一小区和第二小区例如为相邻小区。若接入设备 910为第一小区 的服务接入设备,则该接入设备可根据邻区配置信息获取到第二小区的系统帧 号与第一小区的系统帧号之间对应关系, 或者, 该第一小区的服务接入设备也 可从第二小区的服务接入设备来获取第二小区的系统帧号与第一小区的系统 帧号之间对应关系。
用户设备 920, 用于在切换到第二小区之前, 接收第一小区的服务接入设 备发送的帧号关系指示; ^^据第一小区的系统帧号, 和该帧号关系指示所指示 出的该第二小区的系统帧号与第一小区的系统帧号之间对应关系,确定该第二 小区的系统帧号。
在本发明实施例中, 接入设备 910可通过多少方式, 在上述用户设备 920 切换到第二小区之前的任意时刻, 向该用户设备 920发送该生成的帧号关系指 示。例如,接入设备 910可通过高层信令或其它类型的消息向用户设备 920发送 上述帧号关系指示。例如接入设备 910可通过无线资源控制信令向用户设备 920 发送上述帧号关系指示; 或接入设备 910可通过系统广播消息向用户设备 920 发送上述帧号关系指示。或接入设备 910也可向用户设备 920发送从第一小区向 第二小区切换的切换命令, 该切换命令中携带上述帧号关系指示。 此外, 该切 换命令还可携带第二小区的标识、随机接入信息(或者其它无线资源配置信息 ) 和 /或第二小区的频率信息等。
在本发明实施例中,用于指示第二小区的系统帧号与第一小区的系统帧号 之间对应关系的帧号关系指示,例如可用于指示出第二小区的系统帧号与第一 小区的系统帧号之间的偏置(此处,假设第二小区的系统帧号与第一小区的系 统帧号之间的偏置在一定时间段内固定不变),其中,假设以 SFN_offset来表示 第二小区的系统帧号与第一小区的系统帧号之间的偏置, 则该偏置 SFN_offset 例如可为: SFN_offset = ( SFN_Celll— SFN_Cell2 ) mod N, 或者, SFN_offset = ( SFN_Cell2-SFN_Celll ) mod N; 其中, N为第一小区或第二小区的最大系 统帧号加 1 , SFN_Celll为第一小区的系统帧号、 SFN_Cell2为第二小区的系统 帧号。 当然, 若第二小区与第一小区的系统帧号之间存在其它对应关系, 则该 帧号关系指示用于指示出该其它对应关系。 在第一小区驻留过的 UE知悉第一 小区的系统帧号的变化规律(例如会随着时间周期性变化), 故而能够知悉第 一小区当前的系统帧号, 因此, UE能够根据第一小区当前的系统帧号, 和该 帧号关系指示所指示的第二小区的系统帧号与第一小区的系统帧号间的对应 关系, 来推算出第二小区当前的系统帧号。
本发明实施例提供一种通信系统, 可包括: 接入设备 700。 本发明实施例还提供一种计算机存储介质, 其中, 该计算机存储介质可存 储有程序,该程序执行时包括上述方法实施例中记载的数据处理方法的部分或 全部步骤。
在上述实施例中, 对各个实施例的描述都各有侧重, 某个实施例中没 有详述的部分, 可以参见其他实施例的相关描述。
综上, 本发明实施例的技术方案中, 第一小区的服务接入设备在 UE从第 一小区切换到第二小区之前, 向该 UE发送用于指示第二小区的系统帧号与第 一小区的系统帧号之间对应关系的帧号关系指示, UE根据第一小区的系统帧 号,和该帧号关系指示所指示出的该第二小区的系统帧号与第一小区的系统帧 号之间对应关系, 确定该第二小区的系统帧号。 基于此机制, 使得 UE在从第 一小区切换到第二小区之后可准确获知第二小区当前的系统帧号,进而有利于 保证 UE通信的持续性。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步 骤是可以通过程序来指令相关的硬件来完成,该程序可以存储于一计算机可读 存储介质中, 存储介质例如可以包括: 只读存储器、 随机存储器、 磁盘或光盘 等。
以上对本发明实施例所提供的一种小区配置信息的通知方法以及相关装 置和通信系统进行了详细介绍,本文中应用了具体个例对本发明的原理及实施 方式进行了阐述,以上实施例的说明只是用于帮助理解本发明的方法及其核心 思想; 同时, 对于本领域的一般技术人员, 依据本发明的思想, 在具体实施方 式及应用范围上均会有改变之处, 综上, 本说明书内容不应理解为对本发明的 限制。

Claims

权 利 要 求
1、 一种小区配置信息的通知方法, 其特征在于, 包括:
接入设备获取第二小区的系统帧号与用户设备驻留的第一小区的系统帧 号之间对应关系;
所述接入设备生成帧号关系指示, 其中, 所述帧号关系指示用于指示所述 第二小区的系统帧号与第一小区的系统帧号之间对应关系;
所述接入设备在所述用户设备切换到第二小区之前,向所述用户设备发送 所述帧号关系指示。
2、 根据权利要求 1所述的方法, 其特征在于,
所述向所述用户设备发送所述帧号关系指示, 包括: 通过高层信令向所述 用户设备发送所述帧号关系指示。
3、 根据权利要求 2所述的方法, 其特征在于,
所述通过高层信令向所述用户设备发送所述帧号关系指示, 包括: 通过无 线资源控制信令向所述用户设备发送所述帧号关系指示; 或者,通过系统广播 消息向所述用户设备发送所述帧号关系指示。
4、 根据权利要求 2所述的方法, 其特征在于,
所述通过高层信令向所述用户设备发送所述帧号关系指示, 包括: 向所述 用户设备发送从所述第一小区向所述第二小区切换的切换命令, 其中, 所述切 换命令携带有所述帧号关系指示。
5、 根据权利要求 1至 4任一项所述的方法, 其特征在于,
所述方法还包括:
在所述用户设备切换到第二小区之前,向所述用户设备发送所述第二小区 的天线端口数信息和 /或下行带宽信息。
6、 根据权利要求 1至 5任一项所述的方法, 其特征在于,
所述第二小区与第一小区的系统帧号之间对应关系包括所述第二小区的 系统帧号与第一小区的系统帧号之间的偏置。
7、 根据权利要求 6所述的方法, 其特征在于,
所述偏置 SFN_offset = ( SFN_Celll-SFN_Cell2 ) mod N, 或者, 所述偏置 SFN_offset = ( SFN_Cell2-SFN_Celll ) mod N;
其中, SFN_Celll为所述第一小区的系统帧号、 SFN_Cell2为所述第二小区 的系统帧号, 所述 N为所述第一小区或所述第二小区的最大系统帧号加 1。
8、 一种小区配置信息的通知方法, 其特征在于, 包括:
驻留在第一小区的用户设备在切换到第二小区之前,接收第一小区的服务 接入设备发送的帧号关系指示,所述帧号关系指示用于指示所述第二小区的系 统帧号与第一小区的系统帧号之间对应关系;
所述用户设备^^据所述第一小区的系统帧号,和所述帧号关系指示所指示 出的所述第二小区的系统帧号与第一小区的系统帧号之间对应关系,确定所述 第二小区的系统帧号。
9、根据权利要求 8所述的方法, 其特征在于, 所述接收第一小区的服务接 入设备发送的帧号关系指示, 包括: 接收第一小区的服务接入设备通过高层信 令发送的所述帧号关系指示。
10、 根据权利要求 9所述的方法, 其特征在于, 所述接收第一小区的服务 接入设备通过高层信令发送所述帧号关系指示, 包括: 接收第一小区的服务接 入设备通过无线资源控制信令发送的所述帧号关系指示; 或者,接收第一小区 的服务接入设备通过系统广播消息发送的所述帧号关系指示。
11、 根据权利要求 9所述的方法, 其特征在于, 所述接收第一小区的服务 接入设备通过高层信令发送所述帧号关系指示, 包括: 接收第一小区的服务接 入设备向所述用户设备发送的从所述第一小区向所述第二小区进行切换的切 换命令, 其中, 所述切换命令携带有所述帧号关系指示。
12、 根据权利要求 8至 11任一项所述的方法, 其特征在于,
所述方法还包括:
所述用户设备在切换到第二小区之前,接收第一小区的服务接入设备发送 的所述第二小区的天线端口数信息和 /或下行带宽信息。
13、 根据权利要求 8至 11任一项所述的方法, 其特征在于,
所述第二小区的系统帧号与第一小区的系统帧号之间对应关系包括所述 第二小区的系统帧号与第一小区的系统帧号之间的偏置。
14、 根据权利要求 13所述的方法, 其特征在于,
所述偏置 SFN_offset = ( SFN_Celll-SFN_Cell2 ) mod N,
或者, 所述偏置 SFN_offset = ( SFN_Cell2-SFN_Celll ) mod N;
其中, SFN_Celll为所述第一小区的系统帧号、 SFN_Cell2为所述第二小区 的系统帧号, 所述 N为所述第一小区或所述第二小区的最大系统帧号加 1。
15、 一种接入设备, 其特征在于, 包括:
获取单元,用于获取第二小区的系统帧号与用户设备驻留的第一小区的系 统帧号之间对应关系;
生成单元, 用于生成帧号关系指示, 其中, 所述帧号关系指示用于指示所 述获取单元获取的第二小区的系统帧号与第一小区的系统帧号之间对应关系; 发送器, 用于在所述用户设备切换到第二小区之前, 向所述用户设备发送 所述帧号关系指示。
16、 根据权利要求 15所述的接入设备, 其特征在于,
所述发送器具体用于,通过高层信令向所述用户设备发送所述帧号关系指 示。
17、 根据权利要求 16所述的接入设备, 其特征在于,
所述发送器具体用于,通过无线资源控制信令向所述用户设备发送所述帧 号关系指示;或者,通过系统广播消息向所述用户设备发送所述帧号关系指示。
18、 根据权利要求 15所述的接入设备, 其特征在于,
所述发送器具体用于,向所述用户设备发送从所述第一小区向所述第二小 区切换的切换命令, 其中, 所述切换命令携带有所述帧号关系指示。
19、 根据权利要求 15至 18任一项所述的接入设备, 其特征在于, 所述发送器还用于,在所述用户设备切换到第二小区之前, 向所述用户设 备发送所述第二小区的天线端口数信息和 /或下行带宽信息。
20、 一种用户设备, 其特征在于, 包括:
接收器, 用于从第一小区切换到第二小区之前,接收第一小区的服务接入 设备发送的帧号关系指示,所述帧号关系指示用于指示所述第二小区的系统帧 号与第一小区的系统帧号之间对应关系; 推算单元, 用于根据所述第一小区的系统帧号, 和所述接收器接收的帧号 关系指示所指示出的所述第二小区的系统帧号与第一小区的系统帧号之间对 应关系, 确定所述第二小区的系统帧号。
21、 根据权利要求 20所述的用户设备, 其特征在于,
所述接收器具体用于,接收第一小区的服务接入设备通过高层信令发送的 所述帧号关系指示。
22、 根据权利要求 21所述的用户设备, 其特征在于,
所述接收器具体用于,接收第一小区的服务接入设备通过无线资源控制信 令发送的所述帧号关系指示; 或者,接收第一小区的服务接入设备通过系统广 播消息发送的所述帧号关系指示。
23、 根据权利要求 21所述的用户设备, 其特征在于,
所述接收器具体用于,接收第一小区的服务接入设备向所述用户设备发送 的从所述第一小区向所述第二小区进行切换的切换命令, 其中, 所述切换命令 携带有所述帧号关系指示。
24、 根据权利要求 20至 23任一项所述的用户设备, 其特征在于, 所述接收器还用于,在从第一小区切换到第二小区之前,接收第一小区的 服务接入设备发送的所述第二小区的天线端口数信息和 /或下行带宽信息。
25、 一种通信系统, 其特征在于, 包括:
如权利要求 15~19任一项所述的接入设备,以及如权利要求 20~24任一项所 述的用户设备。
26、 一种计算机存储介质, 其特征在于,
所述计算机存储介质存储有程序, 所述程序执行时包括如权利要求 1至 14 任一项所述的步骤。
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