CN102752821A - Cell switching method, equipment and system - Google Patents

Cell switching method, equipment and system Download PDF

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Publication number
CN102752821A
CN102752821A CN2011101020278A CN201110102027A CN102752821A CN 102752821 A CN102752821 A CN 102752821A CN 2011101020278 A CN2011101020278 A CN 2011101020278A CN 201110102027 A CN201110102027 A CN 201110102027A CN 102752821 A CN102752821 A CN 102752821A
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China
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target
node
via node
information
rab
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陈思
陈琳
奚进
翟恒星
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ZTE Corp
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ZTE Corp
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Priority to CN2011101020278A priority Critical patent/CN102752821A/en
Priority to PCT/CN2011/081967 priority patent/WO2012142823A1/en
Publication of CN102752821A publication Critical patent/CN102752821A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a cell switching method, cell switching equipment and a cell switching system. The cell switching method comprises the following steps that: a source base station determines to carry information which indicates that a switching node is a relay node in the switching preparation process; and the source base station transmits the carried information which indicates that the switching node is the relay node to a target base station. According to the cell switching method, the target base station can reasonably judge whether the relay node is allowed to access to the cell to which the target base station belongs, and the resource utilization rate is improved.

Description

Cell switching method, equipment and system
Technical field
The present invention relates to the communications field, in particular to cell switching method, equipment and system.
Background technology
In GSM; In order to satisfy the mobility requirement; As subscriber equipment (UE; User Equipment) be after cell-of-origin and network connect at Serving cell, UE still need measure the signal quality of its Serving cell and neighbor cell, so that select more proper cell to switch.In handoff procedure; Target cell need be implemented access control to this UE, under the situation that resource allows, allows the handoff request of this UE; Concrete switching flow is as shown in Figure 1; This sentences evolution Universal Terrestrial Radio Access Network network (EUTRAN, Evolved Universal Terrestrial Radio Access Network) is example, and the switching flow of Fig. 1 may further comprise the steps:
Step 101 is that UE that the cell-of-origin is in connection status carries out according to measurement configuration and measures at Serving cell, when UE records the neighbor cell that satisfies report condition, and the source base station reporting measurement reports of UE under the cell-of-origin.
Here, measurement report is meant that the signal quality of measurement report or neighbor cell that the signal quality of neighbor cell is higher than the predetermined offset of Serving cell is higher than the measurement report of predetermined threshold.
After source base station under the step 102, cell-of-origin is received measurement report, make handover decisions, need UE be switched to the Target cell that adjacent base station is the target BS place, source base station sends handoff request message to target BS.
Here, there is X2 interface between source base station and the target BS.Service quality (QoS, the Quality of Service) parameter that in handoff request message, comprises the RAB (E-RAB, E-UTRAN RadioAccess Bearer) of UE foundation.
After step 103, target BS are received handoff request message, carry out access control, under the situation that resource allows, allow the switching of this UE, be this UE Resources allocation according to the qos parameter that comprises in the handoff request message.
Step 104, target BS sends switching request acknowledgement message to source base station, comprises the resource information of distribution.
Step 105 after source base station is received switching request acknowledgement message, is sent switching command to UE.
Here, in prior LTE system, source base station connects reconfiguration message through Radio Resource control (RRC, Radio Resource Control) and carries mobile control information (mobilityControlInfo) to UE transmission switching command.
Step 106, UE obtain with Target cell synchronously, initiate to insert at random at Target cell, send to switch to target BS and accomplish signaling, so far, UE switches to Target cell.
Wherein step 102～104 are called the switching set-up procedure.
In the step 103 of above-mentioned switching flow; Target BS is implemented access control according to the qos parameter of the E-RAB that UE sets up; Wherein qos parameter comprises QoS classification logotype (QCI; QoS Class Identifier), distribute and keep priority (ARP, Allocation and Retention Priority).If the E-RAB that UE sets up guarantees bit rate (GBR; Guaranteed Bit Rate) business; Then qos parameter also need comprise up GBR and the descending GBR and the maximum bit rate (MBR of uplink and downlink; Maximum Bit Rate), this maximum bit rate can be more than or equal to this GBR.Wherein, GBR can also be called the assurance bit rate; MBR can also be called Maximum Bit Rate.
If there is not X2 interface between source base station and the target BS, so also need pass through core network element (like Mobility Management Entity, Mobility Management Entity abbreviates MME as) and transmit the relevant signaling of switching in the set-up procedure, as shown in Figure 2:
Step 201 is that UE that the cell-of-origin is in connection status carries out according to measurement configuration and measures at Serving cell, when UE records the neighbor cell that satisfies report condition, and the source base station reporting measurement reports of UE under the cell-of-origin.
After source base station under the step 202, cell-of-origin is received measurement report, make handover decisions; Need UE be switched to the Target cell that adjacent base station is the target BS place; But,, in handoff request message, comprise the RAB (E-RAB that UE sets up so source base station sends handoff request message to MME owing to do not have X2 interface between source base station and target BS; E-UTRAN Radio Access Bearer) service quality (QoS, Quality of Service) parameter.
Step 203, MME with the handoff request forwards to target BS.
After step 204, target BS are received handoff request message, carry out access control, under the situation that resource allows, allow the switching of this UE, be this UE Resources allocation according to the qos parameter that comprises in the handoff request message.
Step 205, target BS sends switching request acknowledgement message to MME, comprises the resource information of distribution.
Step 206, MME is forwarded to source base station with switching request acknowledgement message.
Step 207 after source base station is received switching request acknowledgement message, is sent switching command message to UE.
Step 208, UE obtain with Target cell synchronously, initiate to insert at random at Target cell, send to switch to target BS and accomplish signaling, so far, UE switches to Target cell.
Wherein step 202～206 are called the switching set-up procedure.
In order to satisfy the demand that growing big bandwidth high-speed mobile inserts; Third generation partnership project (Third Generation Partnership Projects; Abbreviation 3GPP) releases senior Long Term Evolution (Long-Term Evolution Advance is called for short LTE-Advanced) standard.LTE-Advanced is for Long Term Evolution (Long-Term Evolution; Abbreviation LTE) evolution has kept the core of LTE; And adopt a series of technology that frequency domain, spatial domain are expanded on this basis, to reach purposes such as improving the availability of frequency spectrum, increase power system capacity.
Wireless relay (Wireless Relay) technology is one of technology among the LTE-Advanced, is intended to coverage, the area, dead angle in the minimizing communication, balanced load, the business of transfer hot zones and the transmitting power of saving UE of Extended Cell.As shown in Figure 3, RN (Relay Node, via node) provides and similar function of ordinary base station eNB and service the user terminal UE that inserts its sub-district, and wave point between the two is called " access link " (Access Link), is also referred to as the Uu interface.RN inserts an eNB who serves it through wave point with the mode that is similar to common UE, and the eNB that serves RN is referred to as donor base station Donor eNB, is called for short DeNB.Wave point between RN and DeNB is called " return link " (Backhaul Link), is also referred to as the Un mouth.
Whether identical according to RN in the centre frequency that Un mouth and Uu mouth use, can RN be divided into " in the band " (Inband) with " band is outer " (Outband) two kinds of mode of operations.Inband Relay refers to RN and uses identical frequency at the Un mouth with the Uu mouth, and Outband Relay is meant that RN uses different frequencies at the Un mouth with the Uu mouth.
For Inband Relay, be the individual cell that has oneself according to it, still, defined first type relaying Type1 Relay and second type relaying Type2 Relay respectively as the part of sub-district under the DeNB.Type1 Relay is meant that RN can create one's own individual cell; These sub-districts have the Physical Cell Identifier (Physical Cell ID is called for short PCI) of oneself, and RN works as the base station in the sub-district of oneself; As send reference signal, UE is dispatched etc.; And Type2 Relay does not have oneself independently sub-district and PCI, and just auxiliary DeNB carries out transfer of data.Except Type1 Relay, also defined " Type 1a " and " Type 1b " Relay in the standard.They and Type 1 Relay are similar, and independently sub-district and PCI are all arranged, and also independently carry out the transmitting-receiving and the scheduling of control signal.
When the relaying node motion, it is not enough that target BS is only implemented access control according to qos parameter.For example for Type1 Relay, if target BS does not dispose the function of Un subframe for RN, even target BS has enough resources also can't make RN insert the back operate as normal so.For another example, if the resource of target BS only can be supported the QoS of part E-RAB, can not support to carry the QoS of the E-RAB of S1/X2 signaling, can't transmit the S1/X2 signaling after RN inserts so can't operate as normal.
Can not judge rationally that to target BS in the correlation technique can RN insert the sub-district of target BS administration, cause the long perhaps problem of access failure of RN access delay, not propose effective solution at present as yet.
Summary of the invention
The present invention proposes cell switching method and system, make target BS can reasonably judge whether to allow via node to insert the sub-district that target BS is had jurisdiction over, improve the utilance of resource.
According to an aspect of the present invention, a kind of cell switching method is provided, has comprised: in switching set-up procedure, it is the information of via node that source base station confirms to carry the indication switching node; It is that the information of via node is to target BS that said source base station sends the said indication switching node that carries.
Preferably, said carry the indication switching node be the information of via node comprise following one of at least: the sign of via node; The type of via node; The cause value of via node handover of dedicated; Being used to indicate RAB E-RAB is the information of the E-RAB of bear control information.
Preferably, the sign of said via node comprise following one of at least: the expression switching node is via node or is not the field of via node; The field that selection is carried representes that said switching node is a via node when carrying the field that said selection carries, when not carrying the field that said selection carries, represent that said switching node is not a via node; The cell ID ECGI of the sub-district that via node is had jurisdiction over; The interface X2 connection identifier that the via node that said source base station distributes is special-purpose.
Preferably, the type of said via node comprises one of following: inband relaying, the outer outband relaying of band in the band; Fixedly the fixed relaying, move the mobile relaying; Class1 relaying, Class1 a relaying, Class1 b relaying, type 2 relayings; Need return link Un sub-frame configuration relaying, do not need Un sub-frame configuration relaying.
Preferably, the cause value of said via node handover of dedicated comprises: switching node is a via node.
Preferably; Said to be used to indicate RAB E-RAB be that the information of the E-RAB of bear control information comprises one of following: with E-RAB sign E-RAB ID field one to one, represent that the corresponding E-RAB of said E-RAB ID is the E-RAB of bear control information or bear control information not; Selecting the field of carrying one to one with E-RAB sign E-RAB ID, is the E-RAB of bear control information if carry the corresponding E-RAB of the said E-RAB ID of expression, is the E-RAB of bear control information not if do not carry the corresponding E-RAB of the said E-RAB ID of expression.
Preferably, said control information comprise following one of at least: S1 signaling, X2 signaling, operation, management, safeguard the OAM data.
Preferably; Said source base station sends and carries the indication switching node is that the information of via node is to target BS; Comprise: when carrying out the S1 switching between said source base station and said target BS; Said source base station through switching require message HANDOVERREQUIRED send said carry the indication switching node be the information of via node to Mobility Management Entity MME, said MME sends through handoff request message HANDOVER REQUEST and carries information to the said target BS that the indication switching node is a via node; When carrying out the X2 switching between said source base station and said target BS, said source base station sends through handoff request message and carries information to the said target BS that the indication switching node is a via node.
According to another aspect of the present invention, a kind of cell switching method is provided, has comprised: send target BS reception sources base station, and to carry the indication switching node be the information of via node; Said target BS is that the information of via node judges whether to allow said switching node to switch to the sub-district that said target BS is had jurisdiction over according to the said indication switching node that carries.
Preferably; Said target BS is that the information of via node judges whether to allow said switching node to switch to the sub-district that said target BS is had jurisdiction over according to the said indication switching node that carries; Comprise: if when said target BS does not allow said via node to switch to the sub-district that said target BS has jurisdiction over, said target BS sends information to the said source base station that carries the special-purpose cause value of via node.
Preferably, the special-purpose cause value of said via node comprise following one of at least: said target BS does not allow said via node to insert; Said target BS does not allow the via node of particular type to insert; Said target BS can't be set up the E-RAB that carries the S1/X2 signaling.
According to another aspect of the present invention, a kind of cell switching method is provided, has comprised: in switching set-up procedure, source base station is confirmed to carry the indication switching node and is the information of via node and is sent to target BS; Said target BS receives that said source base station sends, and to carry the indication switching node be the information of via node, and be that the information of via node judges whether to allow said switching node to switch to the sub-district that said target BS is had jurisdiction over according to the said indication switching node that carries.
According to another aspect of the present invention, a kind of source base station is provided, has comprised: determination module, be used for switching set-up procedure, confirming to carry the indication switching node is the information of via node; Sending module, being used to send the said indication switching node that carries is that the information of via node is to target BS.
According to another aspect of the present invention, a kind of target BS is provided, has comprised: receiver module, be used for that the reception sources base station sends to carry the indication switching node be the information of via node; Judge module, being used for according to the said indication switching node that carries is that the information of via node judges whether to allow said switching node to switch to the sub-district that said target BS is had jurisdiction over.
According to another aspect of the present invention, a kind of sub-district switched system is provided, has comprised source base station and target BS: said source base station, be used for switching set-up procedure, confirm to carry the indication switching node and be the information of via node and be sent to target BS; Said target BS; Be used to receive that said source base station sends that to carry the indication switching node be the information of via node, and be that the information of via node judges whether to allow said switching node to switch to the sub-district that said target BS is had jurisdiction over according to the said indication switching node that carries.
In embodiments of the present invention; In switching set-up procedure; Source base station send carry the indication switching node be the information of via node to target BS, target BS is that the information of via node judges whether to allow switching node to switch to the sub-district that target BS is had jurisdiction over according to carrying the indication switching node.Promptly; In embodiments of the present invention; Target BS judges accurately whether switching node allows to switch, and has solved the target BS misjudgment, the QoS that does not only enough support part E-RAB for the function or the resource of RN configuration Un subframe; Problem that can't operate as normal after making RN insert improves the utilance of the resource of target BS.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is according to the switching set-up procedure sketch map in the X2 switching of correlation technique;
Fig. 2 is according to the switching set-up procedure sketch map in the S1 switching of correlation technique;
Fig. 3 is the schematic network structure of utilizing the wireless relay technology according to correlation technique;
Fig. 4 is the flow chart according to first kind of cell switching method of the embodiment of the invention;
Fig. 5 is the flow chart according to second kind of cell switching method of the embodiment of the invention;
Fig. 6 is the flow chart according to the third cell switching method of the embodiment of the invention;
Fig. 7 is the flow chart according to the preferred embodiment one of the embodiment of the invention;
Fig. 8 is the flow chart according to the preferred embodiment two of the embodiment of the invention;
Fig. 9 is the structural representation according to the source base station of the embodiment of the invention;
Figure 10 is the structural representation according to the target BS of the embodiment of the invention;
Figure 11 is the structural representation according to the sub-district switched system of the embodiment of the invention.
Embodiment
Mention in the correlation technique, when the relaying node motion, it is not enough that target BS is only implemented access control according to qos parameter.For example for Type 1 Relay, if target BS does not dispose the function of Un subframe for RN, even target BS has enough resources also can't make RN insert the back operate as normal so.For another example, if the resource of target BS only can be supported the QoS of part E-RAB, can not support to carry the QoS of the E-RAB of S1/X2 signaling, can't transmit the S1/X2 signaling after RN inserts so can't operate as normal.
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of cell switching method, and its handling process is as shown in Figure 4, comprising:
Step S402, in switching set-up procedure, it is the information of via node that source base station confirms to carry the indication switching node;
Step S404, source base station send and carry the indication switching node is that the information of via node is to target BS.
In embodiments of the present invention, in switching set-up procedure, it is the information of via node that source base station confirms to carry the indication switching node, and source base station sends and carries the indication switching node is that the information of via node is to target BS.Promptly; Can source base station prior notice target BS RN operate as normal; The information that adopted of notice is and carries the indication switching node is the information of via node, is the function of RN configuration Un subframe if solved target BS, even operate as normal perhaps after target BS had enough resources also can't make RN insert so; If the resource of target BS only can be supported the QoS of part E-RAB; Can not support to carry the QoS of the E-RAB of S1/X2 signaling, can't transmit after RN inserts so the S1/X2 signaling can't operate as normal etc. problem, improve the utilance of the resource that target BS has.
During enforcement, carrying the indication switching node is that the information of via node can be selected different carriers according to different situations, and for example, can select following information one of at least to carry the indication switching node is the information of via node:
The sign of via node;
The type of via node;
The cause value of via node handover of dedicated;
Being used to indicate RAB E-RAB is the information of the E-RAB of bear control information.
In the practical application, also possibly select other information is the carrier of via node as carrying the indication switching node, and can carry the indication switching node is that via node gets final product.
It is existing that to carry the indication switching node with above-mentioned several kinds of mentioning be that the information of via node is that example describes; For example; Selecting the sign of via node is the carrier of via node as carrying the indication switching node; Then consider the characteristic of the indicating self of via node accordingly, the sign of via node can comprise following one of at least:
The expression switching node is via node or is not the field of via node;
The field that selection is carried representes that switching node is a via node when carrying the field of selecting to carry, when not carrying the field of selecting to carry, represent that switching node is not a via node;
The cell ID ECGI of the sub-district that via node is had jurisdiction over;
The interface X2 connection identifier X2AP ID that the via node that source base station distributes is special-purpose.
Again for example, selecting the type of via node is the carrier of via node as carrying the indication switching node, then considers the type self characteristics of via node accordingly, the type of via node can comprise following one of at least:
Inband relaying, the outer outband relaying of band in the band;
Fixedly the fixed relaying, move the mobile relaying;
Class1 (Type 1) relaying, Class1 a (Type 1a) relaying, Class1 b (Type 1b) relaying, type 2 (Type2) relaying;
Need return link Un sub-frame configuration relaying, do not need Un sub-frame configuration relaying.
Again for example; Selecting the cause value of via node handover of dedicated is the carrier of via node as carrying the indication switching node; Then consider the cause value self characteristics of via node handover of dedicated accordingly, the cause value of via node handover of dedicated can comprise: switching node is a via node.
Again for example; It is that the information of the E-RAB of bear control information is the carrier of via node as carrying the indication switching node that selection is used to indicate RAB E-RAB; Consider accordingly that then being used to indicate E-RAB is the information self characteristics of the E-RAB of bear control information, indication E-RAB is that the information of the E-RAB of bear control information can comprise:
With E-RAB sign E-RAB ID field one to one, the corresponding E-RAB of expression E-RAB ID is the E-RAB of bear control information or bear control information not;
Selecting the field of carrying one to one with E-RAB sign E-RAB ID, is the E-RAB of bear control information if carry the corresponding E-RAB of expression E-RAB ID, is the E-RAB of bear control information not if do not carry the corresponding E-RAB of expression E-RAB ID.
During enforcement, the control information that E-RAB carries can comprise following one of at least: S1 signaling, X2 signaling, operation, management, safeguard (OAM, Operations, Administration and Maintenance) data.
Flow process as shown in Figure 4, step S404 when implementing, source base station send carry the indication switching node be the information of via node to target BS, source base station is different with the target BS interface, can cause different switching modes, sending method is also inequality, comprising:
When carrying out S1 switching (the control signaling that relate in this moment should be the S1 signaling) between source base station and target BS; Source base station through handoff request message HANDOVER REQUEST send carry the indication switching node be the information of via node to Mobility Management Entity MME, it is that the information of via node is to target BS that MME requires message HANDOVER REQUIRED to send to carry the indication switching node through switching;
When carrying out X2 between source base station and target BS when switching (control information that relate in this moment should be the X2 signaling),, source base station sends through handoff request message that to carry the indication switching node be that the information of via node is to target BS.
Based on same inventive concept, the embodiment of the invention also provides other a kind of cell switching method, and its handling process is as shown in Figure 5, comprising:
Step S502, target BS reception sources base station send, and to carry the indication switching node be the information of via node;
Step S504, target BS are that the information of via node judges whether to allow switching node to switch to the sub-district that target BS is had jurisdiction over according to carrying the indication switching node.
After target BS is judged, if when target BS does not allow via node to switch to the sub-district that target BS has jurisdiction over, target BS send carry the special-purpose cause value of via node information to source base station.
Wherein, the special-purpose cause value of via node comprise following one of at least:
Target BS does not allow via node to insert;
Target BS does not allow the via node of particular type to insert;
Target BS can't be set up the E-RAB that carries the S1/X2 signaling.
Based on same inventive concept, the present invention also provides other a kind of cell switching method, and its handling process is as shown in Figure 6, comprising:
Step S602, in switching set-up procedure, source base station is confirmed to carry the indication switching node and is the information of via node and is sent to target BS;
Step S604, target BS reception sources base station send, and to carry the indication switching node be the information of via node, and be that the information of via node judges whether to allow switching node to switch to the sub-district that target BS is had jurisdiction over according to carrying the indication switching node.
To sum up can know; In embodiments of the present invention; In switching set-up procedure; Source base station send carry the indication switching node be the information of via node to target BS, target BS is that the information of via node judges whether to allow switching node to switch to the sub-district that target BS is had jurisdiction over according to carrying the indication switching node.Promptly; In embodiments of the present invention; Target BS judges accurately whether switching node allows to switch, and has solved the target BS misjudgment, the QoS that does not only enough support part E-RAB for the function or the resource of RN configuration Un subframe; Problem that can't operate as normal after making RN insert improves the utilance of the resource of target BS.
In addition, in correlation technique, target BS can't judge that switching node is common UE or via node; Therefore possibly be inappropriate resource of via node distribution, cause the long or access failure of via node access delay, the method that adopts the embodiment of the invention to provide; Can know in advance that carrying the indication switching node is the information of via node; Avoid occurring the situation that target BS can't be judged, can distribute adequate resources, improve the utilance of resource for via node.
In addition, under the situation that allows via node to insert, can also make via node successfully insert the sub-district that target BS is had jurisdiction over fast.
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Embodiment one
What present embodiment was described is the scene that X2 switches, and handling process is as shown in Figure 7.
Step S701: source base station sends handoff request (HANDOVER REQUEST) message and gives target BS, and wherein carrying the indication switching node is the information of via node (RN).
The indication switching node be the information of RN refer to following one of at least:
The sign of RN;
The expression switching node is via node or is not the field of via node;
Optional field of carrying is a via node if carry the expression switching node, is not via node if do not carry the expression switching node;
The cell ID of via node jurisdiction district (ECGI);
The X2 connection identifier (X2AP ID) that the RN that source base station distributes is special-purpose.
The type of RN comprises one of following:
(inband) relaying, outer (outband) relaying of band in the band;
Fixing (fixed) relaying, mobile (mobile) relaying;
Class1 (Type 1) relaying, Class1 a (Type 1a) relaying, Class1 b (Type 1b) relaying, type 2 (Type2) relaying;
Need the Un sub-frame configuration, do not need the Un sub-frame configuration.
The switch reasons (Cause) that RN is special-purpose comprising: " switching node is a via node ".
Being used to indicate E-RAB is the information of the E-RAB of bear control information, comprising:
With E-RAB sign (E-RAB ID) field one to one, the corresponding E-RAB of expression E-RAB ID is the E-RAB of bear control information or the field of the E-RAB of bear control information not;
With E-RAB sign (E-RAB ID) optional one to one field of carrying, be the E-RAB of bear control information if carry the corresponding E-RAB of expression E-RAB ID; If do not carry the corresponding E-RAB of expression E-RAB ID and be the not E-RAB of bear control information.
Further, control information comprise following one of at least: S1 signaling, X2 signaling, OAM data.
Step S702: after target BS is received handoff request, be the information and executing access control of via node according to qos parameter that comprises in the handoff request and indication switching node.If target BS allows this switching node to insert, then get into step S703; Otherwise,, then get into step S704 if target BS does not allow switching node to insert.
For example; The indication switching node is that the information of via node is sign or the special-purpose switch reasons of RN of RN among the step S701; Target BS is a via node according to the known switching node of sign that carries RN in the handoff request message; If target BS does not allow via node to insert (like the consideration based on load balancing), then no matter whether resource allows, and target BS does not allow switching node to insert.If target BS allows via node to insert, then under the situation that resource allows, target BS allows switching node to insert.
For example; Switching node is that the information of via node is the type of RN among the step S701; Target BS is a via node according to the known switching node of type that carries RN in the handoff request message; If target BS does not support the via node of some type to insert (do not dispose the function of Un subframe like target BS, so can't support Type 1 relaying to insert, need can't support the via node of Un sub-frame configuration to insert); Then if the RN type of carrying in the handoff request message is the unsupported type of target BS, then target BS does not allow switching node to insert.If the RN type of carrying in the handoff request message is the type that target BS is supported, and under the situation that resource allows, target BS allows switching node to insert.
For example; The indication switching node is that the information of via node is that to be used to indicate E-RAB be the information of the E-RAB of bear control information among the step S701, has two E-RAB to wait to set up like indication in the handoff request message: E-RAB 1 (E-RAB ID=1) and E-RAB 2 (E-RAB ID=2).Wherein, comprise the indication information (indicator) that RN is special-purpose in the relevant parameter of E-RAB1, target BS is the E-RAB of bear control information according to the special-purpose known E-RAB1 of indication information of RN; Do not comprise the indication information (indicator) that RN is special-purpose in the relevant parameter of E-RAB2, thereby the known E-RAB2 of target BS is the E-RAB of bear control information not.So, if target BS can't be set up E-RAB1 (even can set up E-RAB2), just mean that target BS can't move the switching of RN.Otherwise the UE of RN jurisdiction district can't operate as normal.
Step S703, target BS sends switching request acknowledgement message to source base station, comprises the resource information of distribution.
Optional, target BS is the random access resource (like the random access lead code preamble of special use) of switching node (being via node) configure dedicated.
Step S704, target BS send to switch to source base station and prepare failure (HANDOVER PREPARATION FAILURE) message, and the indicating target base station does not allow switching node to insert.
Optional, switch and prepare to carry in the failed message the special-purpose cause value of RN, the reason that indication does not allow switching node (being via node) to insert, cause value comprise following one of at least:
Target BS does not allow via node to insert;
Target BS does not allow the via node of particular type to insert;
Target BS can't be set up the E-RAB that carries the S1/X2 signaling.
Embodiment two
What present embodiment was described is the scene that S1 switches, and its handling process sees also Fig. 8.
Step S801: source base station sends to switch and requires (HANDOVER REQUIRED) message to give MME, and wherein carrying the indication switching node is the information of via node (RN).
The indication switching node be the information of RN refer to following one of at least:
The sign of RN;
The expression switching node is via node or is not the field of via node;
Optional field of carrying is a via node if carry the expression switching node; If not carrying the expression switching node is not via node;
The cell ID of via node jurisdiction district (ECGI);
The X2 connection identifier (X2AP ID) that the RN that source base station distributes is special-purpose.
The type of RN comprises one of following:
(inband) relaying, outer (outband) relaying of band in the band;
Fixing (fixed) relaying, mobile (mobile) relaying;
Class1 (Type 1) relaying, Class1 a (Type 1a) relaying, Class1 b (Type 1b) relaying, type 2 (Type2) relaying;
Need the Un sub-frame configuration, do not need the Un sub-frame configuration.
The switch reasons (Cause) that RN is special-purpose comprising: " switching node is a via node ".
Being used to indicate E-RAB is the information of the E-RAB of bear control information, comprising:
With E-RAB sign (E-RAB ID) field one to one, the corresponding E-RAB of expression E-RAB ID is the E-RAB of bear control information or the field of the E-RAB of bear control information not;
With E-RAB sign (E-RAB ID) optional one to one field of carrying, be the E-RAB of bear control information if carry the corresponding E-RAB of expression E-RAB ID; If do not carry the corresponding E-RAB of expression E-RAB ID and be the not E-RAB of bear control information.
Further, control information comprise following one of at least: S1 signaling, X2 signaling, OAM data.
Step S802:MME receives to switch and requires message, sends corresponding handoff request (HANDOVER REQUEST) message and give target BS.Carrying the indication switching node in the handoff request message is the information of via node.
In this process; If being the information of via node, transmits the indication switching node through container (like Source to Target Transparent Container); So because MME does not resolve the information in the container, so MME just directly is transmitted to target BS with the information in the container.
Step S803: after target BS is received handoff request, be the information and executing access control of via node according to qos parameter that comprises in the handoff request and indication switching node.If target BS allows this switching node to insert, then get into step S804; Otherwise,, then get into step S805 if target BS does not allow switching node to insert.
For example; The indication switching node is that the information of via node is sign or the special-purpose switch reasons of RN of RN among the step S801; Target BS is a via node according to the known switching node of sign that carries RN in the handoff request message; If target BS does not allow via node to insert (like the consideration based on load balancing), then no matter whether resource allows, and target BS does not allow switching node to insert.If target BS allows via node to insert, then under the situation that resource allows, target BS allows switching node to insert.
For example; Switching node is that the information of via node is the type of RN among the step S801; Target BS is a via node according to the known switching node of type that carries RN in the handoff request message; If target BS does not support the via node of some type to insert (do not dispose the function of Un subframe like target BS, so can't support Type 1 relaying to insert, need can't support the via node of Un sub-frame configuration to insert); Then if the RN type of carrying in the handoff request message is the unsupported type of target BS, then target BS does not allow switching node to insert.If the RN type of carrying in the handoff request message is the type that target BS is supported, and under the situation that resource allows, target BS allows switching node to insert.
For example; The indication switching node is that the information of via node is that to be used to indicate E-RAB be the information of the E-RAB of bear control information among the step S801, has two E-RAB to wait to set up like indication in the handoff request message: E-RAB 1 (E-RAB ID=1) and E-RAB 2 (E-RAB ID=2).Wherein, comprise the indication information (indicator) that RN is special-purpose in the relevant parameter of E-RAB1, target BS is the E-RAB of bear control information according to the special-purpose known E-RAB1 of indication information of RN; Do not comprise the indication information (indicator) that RN is special-purpose in the relevant parameter of E-RAB2, thereby the known E-RAB2 of target BS is the E-RAB of bear control information not.So, if target BS can't be set up E-RAB1 (even can set up E-RAB2), just mean that target BS can't move the switching of RN.Otherwise the UE of RN jurisdiction district can't operate as normal.
Step S804: target BS sends Handover Request Acknowledge (HANDOVER REQUEST ACKNOWLEDGE) message to MME, comprises the resource information of distribution.Further, MME sends switching command (HANDOVERCOMMAND) message and gives source base station, and resource information is transmitted to source base station.
Optional, target BS is the random access resource (like the random access lead code preamble of special use) of switching node (being via node) configure dedicated.If special-purpose random access resource transmits through container (like Target to Source Transparent Container), so because MME does not resolve the information in the container, so MME just directly is transmitted to source base station with the information in the container.
Step S805: target BS sends handoff failure (HANDOVER FAILURE) message to MME, and the indicating target base station does not allow switching node to insert.Further, MME sends to switch and prepares failure (HANDOVER PREPARATION FAILURE) message to source base station, and the indicating target base station does not allow switching node to insert.
Optional, switch failure information prepares to carry in the failed message the special-purpose cause value of RN with switching, the reason that indication does not allow switching node (being via node) to insert, cause value comprise following one of at least:
Target BS does not allow via node to insert;
Target BS does not allow the via node of particular type to insert;
Target BS can't be set up the E-RAB that carries the S1/X2 signaling.
Based on same inventive concept, the embodiment of the invention also provides a kind of source base station, and its structural representation is as shown in Figure 9, comprises link to each other cover half piece 901 and sending module 902 really:
Determination module 901 is used for switching set-up procedure, and confirming to carry the indication switching node is the information of via node;
Sending module 902 is used to send that to carry the indication switching node be that the information of via node is to target BS.
Based on same inventive concept, the embodiment of the invention also provides a kind of target BS, and its structural representation is shown in figure 10, comprises continuous receiver module 1001 and judge module 1002:
Receiver module 1001, be used for that the reception sources base station sends to carry the indication switching node be the information of via node;
Judge module 1002, being used for according to carrying the indication switching node is that the information of via node judges whether to allow switching node to switch to the sub-district that target BS is had jurisdiction over.
Based on same inventive concept, the embodiment of the invention also provides a kind of sub-district switched system, and its structural representation is shown in figure 11, comprises continuous source base station 1101 and target BS 1102:
Source base station 1101 is used for switching set-up procedure, confirms to carry the indication switching node and is the information of via node and is sent to target BS 1102;
Target BS 1102, be used for that reception sources base station 1101 sends to carry the indication switching node be the information of via node, and be that the information of via node judges whether to allow switching node to switch to the sub-district that target BS 1102 is had jurisdiction over according to carrying the indication switching node.
From above description, can find out that the present invention has realized following technique effect:
In embodiments of the present invention; In switching set-up procedure; Source base station send carry the indication switching node be the information of via node to target BS, target BS is that the information of via node judges whether to allow switching node to switch to the sub-district that target BS is had jurisdiction over according to carrying the indication switching node.Promptly; In embodiments of the present invention; Target BS judges accurately whether switching node allows to switch, and has solved the target BS misjudgment, the QoS that does not only enough support part E-RAB for the function or the resource of RN configuration Un subframe; Problem that can't operate as normal after making RN insert improves the utilance of the resource of target BS.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, and in some cases, can carry out step shown or that describe with the order that is different from here by calculation element; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (15)

1. a cell switching method is characterized in that, comprising:
In switching set-up procedure, it is the information of via node that source base station confirms to carry the indication switching node;
It is that the information of via node is to target BS that said source base station sends the said indication switching node that carries.
2. method according to claim 1 is characterized in that, said carry the indication switching node be the information of via node comprise following one of at least:
The sign of via node;
The type of via node;
The cause value of via node handover of dedicated;
Being used to indicate RAB E-RAB is the information of the E-RAB of bear control information.
3. method according to claim 2 is characterized in that, the sign of said via node comprise following one of at least:
The expression switching node is via node or is not the field of via node;
The field that selection is carried representes that said switching node is a via node when carrying the field that said selection carries, when not carrying the field that said selection carries, represent that said switching node is not a via node;
The cell ID ECGI of the sub-district that via node is had jurisdiction over;
The interface X2 connection identifier that the via node that said source base station distributes is special-purpose.
4. method according to claim 2 is characterized in that, it is one of following that the type of said via node comprises:
Inband relaying, the outer outband relaying of band in the band;
Fixedly the fixed relaying, move the mobile relaying;
Class1 relaying, Class1 a relaying, Class1 b relaying, type 2 relayings;
Need return link Un sub-frame configuration relaying, do not need Un sub-frame configuration relaying.
5. method according to claim 2 is characterized in that, the cause value of said via node handover of dedicated comprises: switching node is a via node.
6. method according to claim 2 is characterized in that, said to be used to indicate RAB E-RAB be that the information of the E-RAB of bear control information comprises one of following:
With E-RAB sign E-RAB ID field one to one, represent that the corresponding E-RAB of said E-RAB ID is the E-RAB of bear control information or bear control information not;
Selecting the field of carrying one to one with E-RAB sign E-RAB ID, is the E-RAB of bear control information if carry the corresponding E-RAB of the said E-RAB ID of expression, is the E-RAB of bear control information not if do not carry the corresponding E-RAB of the said E-RAB ID of expression.
7. according to each described method of claim 1 to 6, it is characterized in that, said control information comprise following one of at least: S1 signaling, X2 signaling, operation, management, safeguard the OAM data.
8. method according to claim 7 is characterized in that, said source base station send carry the indication switching node be the information of via node to target BS, comprising:
When carrying out the S1 switching between said source base station and said target BS; Said source base station through switching require message HANDOVER REQUIRED send said carry the indication switching node be the information of via node to Mobility Management Entity MME, said MME sends through handoff request message HANDOVER REQUEST and carries information to the said target BS that the indication switching node is a via node;
When carrying out the X2 switching between said source base station and said target BS, said source base station sends through handoff request message and carries information to the said target BS that the indication switching node is a via node.
9. a cell switching method is characterized in that, comprising:
Send target BS reception sources base station, and to carry the indication switching node be the information of via node;
Said target BS is that the information of via node judges whether to allow said switching node to switch to the sub-district that said target BS is had jurisdiction over according to the said indication switching node that carries.
10. method according to claim 9; It is characterized in that; Said target BS is that the information of via node judges whether to allow said switching node to switch to the sub-district that said target BS is had jurisdiction over according to the said indication switching node that carries; Comprise: if when said target BS does not allow said via node to switch to the sub-district that said target BS has jurisdiction over, said target BS sends information to the said source base station that carries the special-purpose cause value of via node.
11. method according to claim 10 is characterized in that, the special-purpose cause value of said via node comprise following one of at least:
Said target BS does not allow said via node to insert;
Said target BS does not allow the via node of particular type to insert;
Said target BS can't be set up the RAB E-RAB that carries the S1/X2 signaling.
12. a cell switching method is characterized in that, comprising:
In switching set-up procedure, source base station is confirmed to carry the indication switching node and is the information of via node and is sent to target BS;
Said target BS receives that said source base station sends, and to carry the indication switching node be the information of via node, and be that the information of via node judges whether to allow said switching node to switch to the sub-district that said target BS is had jurisdiction over according to the said indication switching node that carries.
13. a source base station is characterized in that, comprising:
Determination module is used for switching set-up procedure, and confirming to carry the indication switching node is the information of via node;
Sending module, being used to send the said indication switching node that carries is that the information of via node is to target BS.
14. a target BS is characterized in that, comprising:
Receiver module, be used for that the reception sources base station sends to carry the indication switching node be the information of via node;
Judge module, being used for according to the said indication switching node that carries is that the information of via node judges whether to allow said switching node to switch to the sub-district that said target BS is had jurisdiction over.
15. a sub-district switched system is characterized in that, comprises source base station and target BS:
Said source base station is used for switching set-up procedure, confirms to carry the indication switching node and is the information of via node and is sent to target BS;
Said target BS; Be used to receive that said source base station sends that to carry the indication switching node be the information of via node, and be that the information of via node judges whether to allow said switching node to switch to the sub-district that said target BS is had jurisdiction over according to the said indication switching node that carries.
CN2011101020278A 2011-04-22 2011-04-22 Cell switching method, equipment and system Pending CN102752821A (en)

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