CN102118809B - Switching preparation method of communication system, relay node and communication system - Google Patents
Switching preparation method of communication system, relay node and communication system Download PDFInfo
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- CN102118809B CN102118809B CN200910238888.1A CN200910238888A CN102118809B CN 102118809 B CN102118809 B CN 102118809B CN 200910238888 A CN200910238888 A CN 200910238888A CN 102118809 B CN102118809 B CN 102118809B
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- 238000004891 communication Methods 0.000 title claims abstract description 75
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000012790 confirmation Methods 0.000 claims abstract description 14
- 230000003993 interaction Effects 0.000 claims 1
- 230000011664 signaling Effects 0.000 abstract description 12
- 238000005259 measurement Methods 0.000 description 14
- 238000005457 optimization Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 2
- JZEPSDIWGBJOEH-UHFFFAOYSA-N 4-decylbicyclo[2.2.1]hept-2-ene Chemical compound C1CC2C=CC1(CCCCCCCCCC)C2 JZEPSDIWGBJOEH-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000021186 dishes Nutrition 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
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Abstract
The embodiment of the invention provides a switching preparation method of a communication system, which comprises the steps: a communication node receives a switching request message; the switching request message contains the identifications of cells in a cell set under the node, the cell set comprises at least two cells; and when one cell of the cell set under the communication node receives the switching request, the communication node sends a switching request confirmation message so that the signaling cost in the switching process is reduced, wherein the switching request confirmation message carries the identification of the cell receiving the switching request. The embodiment of the invention also provides a relay node and a communication system.
Description
Technical field
The present invention relates to mobile communication and lead to technical field, be specifically related to a kind of communication system and switch preparation method, via node, communication system.
Background technology
Along with the development of mechanics of communication, relaying Relay technology by as a kind of for improve cell capacity and expansion cover key technology and propose, dispose relay station (Relay Node in a network, RN), the wireless communication signals between base station and terminal can be strengthened, in addition, RN also has hardware cost and the relatively low advantage of lower deployment cost and disposes the characteristics such as flexible.Introduce after RN, the link of eating dishes without rice or wine of the single-hop between UE and base station is divided into two sections, and comprise access link and back haul link, wherein access link is the link between UE and base station or between UE and RN; Back haul link is the link between RN and base station, also can be called repeated link.
Along with the introducing of relay station, owing to increasing the air interface transmission time of one section of back haul link, thus cause same message repeatedly to send between the two nodes, add signaling consumption, and cause switching time long and cause handoff failure.
Summary of the invention
The embodiment of the present invention provides a kind of communication system to switch preparation method, via node, communication system, to reduce the signaling consumption in handoff procedure.
On the one hand, embodiments provide a kind of communication system and switch preparation method, comprising:
Communication node receives handover request message, and described handover request message carries the mark of the community in the set of cells under described node, and described set of cells comprises at least Liang Ge community;
If a community in the set of cells under described communication node accepts described handover request;
Described communication node sends switching request acknowledgement message, and described switching request acknowledgement message carries the mark of the community of the described handover request of described acceptance.
On the one hand, embodiments provide a kind of communication node, comprising:
Transceiver module, for receiving handover request message, described handover request message carries the mark of the community in the set of cells under described node, and described set of cells comprises at least Liang Ge community;
Confirm module, for confirming that a community in the described set of cells under described node accepts described handover request;
Described transceiver module also sends switching request acknowledgement message for the confirmation result according to described confirmation module, and described switching request acknowledgement message carries the described mark accepting the community of handover request.
Again on the one hand, embodiments provide a kind of communication system, comprising:
Via node, in switching set-up procedure, receive the handover request message that base station sends, described handover request message carries the mark of the community in the set of cells under described node, and described set of cells comprises at least Liang Ge community; And a community in described set of cells is when accepting described handover request, send switching request acknowledgement message, described switching request acknowledgement message carries the described mark accepting the community of handover request.
The embodiment of the present invention is by carrying the cell ID under node in set of cells in handover request message, if a community in the set of cells under described communication node accepts described handover request, described communication node sends switching request acknowledgement message, described switching request acknowledgement message carries the mark of the community of the described handover request of described acceptance, thus after avoiding a community refusal handover request due to communication node, the direct neighbor node of the downstream site of this communication node also needs to repeat to send handover request message to this communication node or this communication node direct neighbor node, thus decrease signaling consumption in handoff procedure, reduce switching controls face time delay.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly introduced, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the communication system switching preparation method of the embodiment of the present invention one;
Fig. 2 is the schematic flow sheet of the communication system switching preparation method of the embodiment of the present invention two;
Fig. 3 is the schematic flow sheet of the communication system switching preparation method of the embodiment of the present invention three;
Fig. 4 is the schematic flow sheet of the communication system switching preparation method of the embodiment of the present invention four;
Fig. 5 is the schematic flow sheet of the communication system switching preparation method of the embodiment of the present invention five;
Fig. 6 is the schematic flow sheet of the communication system switching preparation method of the embodiment of the present invention six;
Fig. 7 is the schematic flow sheet of the communication system switching preparation method of the embodiment of the present invention seven;
Fig. 8 is the schematic flow sheet of the communication system switching preparation method of the embodiment of the present invention eight;
Fig. 9 is the schematic flow sheet of the communication system switching preparation method of the embodiment of the present invention nine;
Figure 10 is the structural representation of the via node of the embodiment of the present invention;
Figure 11 is a kind of structural representation of the communication system of the embodiment of the present invention;
Figure 12 is the another kind of structural representation of the communication system of the embodiment of the present invention;
Figure 13 is the structural representation of the base station in the communication system of the embodiment of the present invention.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, and obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the schematic flow sheet of the communication system preparation method of the embodiment of the present invention one, comprising:
101, communication node receives handover request message, and described handover request message carries the mark of the community in the set of cells under described node, and described set of cells comprises at least Liang Ge community;
If a community in the set of cells under 102 described communication nodes accepts described handover request;
103, described communication node sends switching request acknowledgement message, and described switching request acknowledgement message carries the mark of the community of the described handover request of described acceptance.
The embodiment of the present invention is by carrying the cell ID under node in set of cells in handover request message, if a community in the set of cells under described communication node accepts described handover request, described communication node sends switching request acknowledgement message, described switching request acknowledgement message carries the mark of the community of the described handover request of described acceptance, thus after avoiding a community refusal handover request due to communication node, the direct neighbor node of the downstream site of this communication node also needs to repeat to send handover request message to this communication node or this communication node direct neighbor node, thus decrease signaling consumption in handoff procedure, reduce switching controls face time delay.
Fig. 2 is the schematic flow sheet of the switching optimization method of the communication system of the embodiment of the present invention two, is switched, specifically comprise by the cell ID and security key parameter carrying multiple Target cells of RN node in handover request message:
201, UE sends measurement report to eNB1, and this measurement report carries the measurement result of multiple community;
202, eNB1 carries out switch decision according to the measurement result of this measurement report;
If 203 eNB1 determine to switch, eNB1 selects multiple communities of RN node as Target cell according to measurement result;
204, eNB1 sends handover request message to eNB2, and this message carries cell ID and the security key parameter of multiple Target cells of RN node;
Wherein, cell ID is used for identifying cells, such as E-UTRAN Cell Global Identifier (ECGI); Security key parameter is used for using the described security key parameter accepting the Target cell of handover request to carry out Access Layer AS safeguard protection when UE is mutual with the target cell data accepting handover request.
205, eNB2 sends handover request message to RN node, and this message carries cell ID and the security key parameter of multiple Target cells of described RN node;
206, RN node judges in multiple Target cell, whether each Target cell can accept this handover request successively, until certain Target cell in multiple Target cell accepts this handover request;
207, RN node sends switching request acknowledgement message to eNB2, and this message carries the configuration parameter that this accepts handover request Target cell;
Wherein configuration parameter comprises Target Cell Identifier, Target cell security algorithm identification, system message of target cell etc.
208, eNB2 forwards this switching request acknowledgement message to eNB1;
209, after eNB1 receives switching request acknowledgement message, know that handover request is accepted, then send switching command message to UE, this message carries the configuration parameter that this accepts handover request Target cell;
210, the configuration parameter that UE accepts handover request Target cell according to this accesses Target cell.
The embodiment of the present invention is switched by the cell ID and security key parameter carrying multiple Target cells of RN node in handover request message, thus after avoiding a community refusal handover request due to RN, eNB1 also needs from repeating to RN or eNB2 to send handover request message, decrease signaling consumption in handoff procedure, reduce switching controls face time delay.
Fig. 3 is the schematic flow sheet of the switching optimization method of the communication system of the embodiment of the present invention two, switched by the cell ID and security key parameter that carry multiple Target cells of RN node and eNB2 in handover request message, the step 301 of this embodiment, 302,308,310,311 and embodiment step 201,202,208,209,210 similar, difference is:
If 303 eNB1 determine to switch, eNB1 selects multiple communities of RN node and eNB2 as Target cell according to measurement result;
304, eNB1 sends handover request message to eNB2, and this message carries cell ID and the security key parameter of multiple Target cells of RN node and eNB2;
Wherein, cell ID is used for identifying cells, such as E-UTRAN Cell Global Identifier (ECGI); Security key parameter is used for using the described security key parameter accepting the Target cell of handover request to carry out Access Layer AS safeguard protection when UE is mutual with the target cell data accepting handover request.
305, eNB2 sends handover request message to RN node, and this message carries cell ID and the security key parameter of multiple Target cells of described RN node;
Wherein, eNB2 sends handover request message to RN node and is different from the handover request message that eNB2 receives, it is that eNB2 regenerates new handover request message that eNB2 sends handover request message to RN node, different cell ID and the security key parameter being multiple Target cells of only carrying RN node of the new handover request message of this generation and the handover request message received.
Whether what 306, RN node judged each Target cell in multiple Target cell successively according to Target cell priority height can accept this handover request;
Wherein, the priority of each Target cell carries out arranging or random alignment according to the quality of the cell ID signal quality of Target cell.
If 307 multiple Target cells do not meet switching condition and refuse this handover request, RN sends to switch to eNB2 and prepares failed message;
Wherein, the reason not meeting switching condition can comprise that cell load is overweight, community is restricted cell or security algorithm does not mate.
308, after eNB2 receives this message, whether what judge each Target cell in multiple Target cell successively according to the Target cell priority height of eNB2 can accept this handover request, until certain Target cell in multiple Target cell accepts this handover request;
309, eNB2 sends this switching request acknowledgement message to eNB1, and this message carries the configuration parameter of the Target cell of eNB2;
Wherein configuration parameter comprises Target Cell Identifier, Target cell security algorithm identification, system message of target cell etc.
Wherein, the priority of each Target cell carries out arranging or random alignment according to the quality of the cell ID signal quality of Target cell.
The embodiment of the present invention is switched by the cell ID and security key parameter carrying multiple Target cells of RN and eNB2 in handover request message, thus after avoiding a community refusal handover request due to RN, eNB1 also needs from repeating to RN or eNB2 to send handover request message, decrease signaling consumption in handoff procedure, reduce switching controls face time delay.
Fig. 4 is the schematic flow sheet of the switching optimization method of the communication system of the embodiment of the present invention four, by the cell ID of a Target cell of RN node that carries in handover request message and security key parameter, switch with the cell ID of multiple candidate cells of RN node and security key parameter, step 201, the step 202 of the step 401 of this embodiment and step 402 and embodiment two are similar, and difference is:
If 403 eNB1 determine to switch, eNB1 selects a community of RN node as Target cell according to measurement result, selects the alternatively community, multiple communities of RN node;
404, eNB1 sends handover request message to eNB2, and this message carries cell ID and the security key parameter of a Target cell of RN node, and the cell ID of multiple candidate cells of RN node and security key parameter;
405, eNB2 sends handover request message to RN node, and this message carries cell ID and the security key parameter of a Target cell of RN node, and the cell ID of multiple candidate cells of RN node and security key parameter;
If this handover request is refused owing to not meeting switching condition in the Target cell of 406 RN nodes, RN node judges whether candidate cell can accept this handover request further;
If a candidate cell in multiple candidate cells of 407 RN nodes accepts this handover request, select candidate cell that this accepts handover request as Target cell;
408, RN node sends switching request acknowledgement message to eNB2, and this message carries the configuration parameter of the Target cell of RN node;
409, eNB2 forwards this switching request acknowledgement message to eNB1, and this message carries the configuration parameter of Target cell;
410, after eNB1 receives switching request acknowledgement message, eNB1 judges whether to accept the Target cell selected by this eNB2;
If 411 eNB1 accept the Target cell selected by this eNB2, then send switching command message to UE, this message carries the configuration parameter of the Target cell of described eNB2;
412, UE is according to the configuration parameter access Target cell of the Target cell of eNB2.
The embodiment of the present invention is by the cell ID of a Target cell of RN node that carries in handover request message and security key parameter, switch with the cell ID of multiple candidate cells of RN node and security key parameter, thus after avoiding a community refusal handover request due to RN, eNB1 also needs to repeat to send handover request message to RN or eNB2, decrease signaling consumption in handoff procedure, reduce switching controls face time delay.
Fig. 5 is the schematic flow sheet of the switching optimization method of the communication system of the embodiment of the present invention five, by carrying cell ID and the security key parameter of a Target cell of RN node in handover request message, switch with the cell ID of multiple candidate cells and security key parameter that carry RN node and eNB2, the step 501 of this embodiment, 502 and the step 401,402 similar of embodiment four, difference is:
If 503 eNB1 determine to switch, eNB1 selects a community of RN node as Target cell according to measurement result, and selects the alternatively community, multiple communities of RN node and eNB2;
504, eNB1 sends handover request message to eNB2, and this message carries cell ID and the security key parameter of the Target cell of RN node, and carries the cell ID of multiple candidate cells and the security key parameter of RN node and eNB2;
505, eNB2 sends handover request message to RN node, and this message carries cell ID and the security key parameter of the Target cell of RN node, and carries the cell ID of multiple candidate cells and the security key parameter of RN node;
If this handover request is refused owing to not meeting switching condition in the Target cell of 506 RN nodes, RN node judges whether candidate cell can accept this handover request;
If 507 multiple candidate cells all can not accept handover request, RN node sends to switch to eNB2 and prepares failed message;
If a candidate cell in 508 eNB2 many candidate cells accepts this handover request, select candidate cell that this accepts handover request as Target cell;
509, eNB2 sends switching request acknowledgement message to eNB1, and this message is carried the configuration parameter of the Target cell of described eNB2 and switched instruction, the instruction that this switching is designated as the instruction of handover request of RN node refusal, eNB2 accepts handover request;
510, after eNB1 receives switching request acknowledgement message, know that eNB2 accepts handover request, eNB1 judges whether the Target cell accepting this eNB2;
If 511 eNB1 accept the Target cell of this eNB2, then send switching command to UE, this switching command carries the configuration parameter of the Target cell of this eNB2;
512, UE is according to the configuration parameter access Target cell of the Target cell of this eNB2.
The embodiment of the present invention is by carrying a community of RN node as Target cell in handover request message, alternatively switch community with selecting multiple communities of RN node and eNB2, thus after avoiding a community refusal handover request due to RN, eNB1 also needs to repeat to send handover request message to RN or eNB2, decrease signaling consumption in handoff procedure, reduce switching controls face time delay.
As shown in Figure 6, embodiments of the invention can also be switched by the cell ID and security key parameter carrying a Target cell of RN node in handover request message, if this handover request is refused owing to not meeting switching condition in the Target cell of RN node, RN node judges whether the alternative cell except this Target cell can accept this handover request further, this alternative cell is the community under RN and DeNB except Target cell and candidate cell, if certain community accepts this handover request message in the alternative cell of this RN node, select community that this accepts handover request as Target cell, the switching request acknowledgement message of carrying Target cell configuration parameter is sent to eNB1 by eNB2 by RN node, if eNB1 accepts this Target cell selected by RN node, eNB1 sends the security key parameter of this Target cell to eNB2, eNB2 forwards this security key parameter to RN, eNB1 sends switching command message to UE simultaneously, to make UE according to the configuration parameter access Target cell of this RN node.
As shown in Figure 7, embodiments of the invention can also be switched by the cell ID and security key parameter carrying a Target cell of RN node in handover request message, if the Target cell of RN node does not meet switching condition refuse this handover request, continue to judge whether the alternative cell of RN node except this Target cell can accept this handover request, if the alternative cell of RN node all can not accept this handover request, whether the alternative cell of the further eNB2 of judgement can accept this handover request, if a certain community can accept this handover request in the alternative cell of eNB2, then select the community accepting handover request of eNB2 as Target cell, if eNB1 accepts the Target cell of this eNB2, eNB1 sends the security key parameter of this Target cell to eNB2, eNB1 sends switching command message to UE simultaneously, to make UE according to the configuration parameter access Target cell of this RN node.
As shown in Figure 8, the embodiment of the present invention can not also comprise via node, switched by the cell ID and security key parameter that carry multiple Target cells of eNB2 in handover request message, eNB2 judges in multiple Target cell, whether each Target cell can accept this handover request successively, until certain Target cell in multiple Target cell accepts this handover request, eNB2 sends switching request acknowledgement message to eNB1, this message carries the configuration parameter that this accepts handover request Target cell, eNB1 sends switching command message to UE, to make UE according to the configuration parameter access Target cell of the Target cell of this eNB2.
Fig. 9 is the schematic flow sheet of the switching optimization method of the embodiment of the present invention, is rebuild, specifically comprise by the rebuild community security parameter of the RN node carried in handover request message:
901, UE sends measurement report to eNB1, and this measurement report carries the measurement result of multiple community;
902, eNB1 carries out switch decision according to the measurement result of this measurement report;
903, eNB1 selects a community of RN node as Target cell;
904, eNB1 sends handover request message to eNB2, and this message carries the cell list rebuild of eNB2 and RN node;
This can be rebuild in cell list and comprise the security parameter shor tMAC-I that each can rebuild community.
905, eNB2 sends handover request message to RN node, and this message carries the rebuild community security parameter list of this RN node;
If the Target cell of 906 RN nodes accepts this handover request, then RN node sends switching request acknowledgement message to eNB2, and this message carries the configuration parameter of the Target cell of this RN node;
907, eNB2 forwards to eNB1 and send switching request acknowledgement message;
908, eNB1 sends switching command to UE, and this order is carried the configuration parameter of the Target cell of this RN node and can be rebuild security parameter;
909, UE receives this message and switches to Target cell, if UE is according to this configuration parameter configuration failure or switch the reasons such as timer expiration and cause handoff failure, then UE selects community to rebuild according to signal quality;
910, optional, if the community that UE selects is to rebuild the community in the security parameter list of community, ZeUEXiang Gai community sends the request of RRC connection reconstruction, and this request uses the security parameter of the rebuild community of this community to carry out Access Layer AS safeguard protection.
The embodiment of the present invention selects a community under RN as Target cell by eNB1, eNB1 sends handover request message to eNB2, under this message carries eNB2 and RN, other can rebuild community security parameter, thus eNB1 also needs to send to eNB2 the security parameter can rebuilding community after decreasing handoff failure, when comprising relay station in mobile communication system, signaling consumption in handoff procedure, reduces switching controls face time delay.
Figure 10 is the structural representation of embodiment of the present invention via node, comprising:
Transceiver module 101, for receiving handover request message, described handover request message carries the mark of the community in the set of cells under described node, and described set of cells comprises at least Liang Ge community; Described transceiver module also sends switching request acknowledgement message for the confirmation result according to described confirmation module, and described switching request acknowledgement message carries the described mark accepting the community of handover request;
Confirm module 102, for confirming that a community in the described set of cells under described node accepts described handover request.
Wherein, if described node is eNB, described transceiver module is for receiving the handover request message of the mark of at least two Target cells in the set of cells that carries under described eNB, and described set of cells comprises at least two Target cells.
Wherein, if described node is RN, described transceiver module is for receiving the handover request message of the mark of at least two Target cells in the set of cells that carries under described RN, and described set of cells comprises at least two Target cells; Or, described transceiver module is for receiving the handover request message of the mark of at least one Target cell in the set of cells that carries under described RN and the mark of at least one candidate cell, and described set of cells comprises at least one Target cell and at least one candidate cell; Or described transceiver module is for receiving the handover request message of at least one Target Cell Identifier in the set of cells that carries under described RN, and described set of cells comprises at least one Target cell and at least one alternative cell.
Wherein, described confirmation module is for confirming that a Target cell in the set of cells under described RN accepts described handover request; Or for confirming that described handover request is refused in the target complete community in the set of cells under described RN, in described set of cells, a candidate cell or an alternative cell accept described handover request.
Wherein, described confirmation module, also for confirming that described handover request is all refused in the community in the set of cells under described RN;
Wherein, described transceiver module, after described handover request is all refused in community also for confirming in the set of cells under described RN in described confirmation module, send to switch to the set of cells under the direct neighbor node of described RN and prepare failed message, to make the direct neighbor node of described RN after determining that a community in the set of cells under described direct neighbor node accepts described handover request, superior node to described direct neighbor node sends switching request acknowledgement message, described switching request acknowledgement message carries the mark of the community of the described handover request of described acceptance.
Wherein, described confirmation module is for confirming that described handover request is refused in the target complete community in the set of cells under described RN, and an alternative cell in described set of cells accepts described handover request, the security key parameter of that the direct neighbor node of described transceiver module also for receiving described RN sends, under described direct neighbor node Target cell, described Target cell is the Target cell that described direct neighbor node confirms.
The embodiment of the present invention is by carrying the cell ID under node in set of cells in handover request message, if a community in the set of cells under described communication node accepts described handover request, described communication node sends switching request acknowledgement message, described switching request acknowledgement message carries the mark of the community of the described handover request of described acceptance, thus after avoiding a community refusal handover request due to communication node, the direct neighbor node of the downstream site of this communication node also needs to repeat to send handover request message to this communication node or this communication node direct neighbor node, thus decrease signaling consumption in handoff procedure, reduce switching controls face time delay.
Figure 11 is the structural representation of embodiment of the present invention communication system, comprising:
Via node 110, in switching set-up procedure, receive the handover request message that base station sends, described handover request message carries the mark of the community in the set of cells under described node, and described set of cells comprises at least Liang Ge community; And a community in described set of cells is when accepting described handover request, send switching request acknowledgement message, described switching request acknowledgement message carries the described mark accepting the community of handover request.
Wherein, described via node, when also refusing described handover request for the whole communities in described set of cells, sends to described base station and switches preparation failed message.
A nearly step, as shown in figure 12, this communication system also comprises base station 111, for receiving the handover request message that superior node sends, described handover request message carries the mark of the community in the set of cells under the mark of the community in the set of cells under described base station and described via node, and the set of cells under described base station comprises at least one community; For sending handover request message to via node; And for receiving the switching preparation failed message that described via node sends, and a community in set of cells under described base station is when accepting described handover request, switching request acknowledgement message is sent to described superior node, described switching request acknowledgement message is carried the described mark accepting the community of handover request and is indicated with switching, and described switching is designated as the instruction that described base station accepts handover request, described via node refusal handover request;
Further, as shown in figure 13, described base station comprises:
Transceiver module 1111, for receiving the handover request message that superior node sends, described handover request message carries the mark of the community in the set of cells under the mark of the community in the set of cells under described base station and described via node, and the set of cells under described base station comprises at least one community; For sending handover request message to via node, and for receiving the switching preparation failed message that described via node sends, and a community in described confirmation module confirms under described base station set of cells is when accepting described handover request, switching request acknowledgement message is sent to described superior node, described switching request acknowledgement message is carried the described mark accepting the community of handover request and is indicated with switching, and described switching is designated as the instruction that described base station accepts handover request, described via node refusal handover request;
Confirm module 1112, accept described handover request for a community in the set of cells under the described RN of described confirmation.
The embodiment of the present invention is by carrying the cell ID under node in set of cells in handover request message, if a community in the set of cells under described communication node accepts described handover request, described communication node sends switching request acknowledgement message, described switching request acknowledgement message carries the mark of the community of the described handover request of described acceptance, thus after avoiding a community refusal handover request due to communication node, the direct neighbor node of the downstream site of this communication node also needs to repeat to send handover request message to this communication node or this communication node direct neighbor node, thus decrease signaling consumption in handoff procedure, reduce switching controls face time delay.
In the description by above each embodiment, those skilled in the art can be well understood to the present invention and can realize by the mode of software and required general hardware platform, certainly, also hardware can be passed through, but in a lot of situation, the former is better execution mode.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform the method that each embodiment of the present invention is somebody's turn to do.
Although by referring to some of the preferred embodiment of the invention, to invention has been diagram and describing, but those of ordinary skill in the art should be understood that and can do various change to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (5)
1. communication system switches a preparation method, it is characterized in that, comprising:
Sources traffic node sends handover request message to a destination communication node;
Described destination communication node receives described handover request message, and described handover request message carries the mark of at least two Target cells in the set of cells under described node, and described set of cells comprises at least two Target cells;
Described destination communication node judges whether each Target cell in described set of cells can accept described handover request, until determine that a Target cell in described set of cells accepts described handover request;
Described destination communication node sends switching request acknowledgement message, and described switching request acknowledgement message carries the mark of the Target cell of the described handover request of described acceptance.
2. method according to claim 1, is characterized in that, described destination communication node is base station eNB.
3. method according to claim 1, is characterized in that,
Described handover request message also carries the security key parameter of Target cell in the set of cells under described node; after making handover success; when user terminal UE carries out data interaction with the Target cell accepting handover request, the described security key parameter accepting handover request Target cell is used to carry out Access Layer AS safeguard protection.
4. a communication node, is characterized in that, comprising:
Transceiver module, for receiving handover request message, described handover request message carries the mark of at least two Target cells in the set of cells under described node, described set of cells comprises at least two Target cells, and described handover request message is that sources traffic node sends to described communication node;
Confirm module, for judging whether each Target cell in described set of cells can accept described handover request, until determine that a Target cell in described set of cells accepts described handover request;
Described transceiver module also sends switching request acknowledgement message for the confirmation result according to described confirmation module, and described switching request acknowledgement message carries the described mark accepting the Target cell of handover request.
5. node according to claim 4, is characterized in that, described node is eNB.
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| CN200910238888.1A CN102118809B (en) | 2009-12-31 | 2009-12-31 | Switching preparation method of communication system, relay node and communication system |
| PCT/CN2010/080597 WO2011079818A1 (en) | 2009-12-31 | 2010-12-31 | Handover preparation method for communication system, relay node and communication system |
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| CN103327475B (en) * | 2012-03-21 | 2017-05-24 | 电信科学技术研究院 | Addressing method and addressing device for cell switch |
| CN110493836B (en) * | 2015-09-11 | 2021-07-27 | 展讯通信（上海）有限公司 | MTC terminal cell switching control method and device |
| CN113825183A (en) * | 2020-06-19 | 2021-12-21 | 展讯通信（上海）有限公司 | Communication method and device |
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| CN101180909A (en) * | 2005-03-30 | 2008-05-14 | 诺基亚公司 | Systems, devices, methods and programs for reducing service interruption during routing area changes |
| CN101400088A (en) * | 2007-09-30 | 2009-04-01 | 华为技术有限公司 | Switching method and device for evolution network |
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| US8121094B2 (en) * | 2006-12-04 | 2012-02-21 | Electronics And Telecommunications Research Institute | Method for managing cross-layer handover |
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| CN101400088A (en) * | 2007-09-30 | 2009-04-01 | 华为技术有限公司 | Switching method and device for evolution network |
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