CN102123480A - Notification and transmission method of access capability of relay node - Google Patents
Notification and transmission method of access capability of relay node Download PDFInfo
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Abstract
The invention discloses a notification and transmission method of the access capability of a relay node. The notification method of the access capability of a relay node comprises the following steps: a cell broadcasts the access capability information of a relay node of the cell by system messages; and whether the relay node can access the cell is judged by the relay node according to the capability information. In the notification and transmission method disclosed by the invention, the relay node can acquire the access capability information of the relay node of the cell so as to provide a reference for the relay node in selecting the access cell, so that the problems that the access resource is wasted and the access is delayed as a relay node accesses a cell which does not support the access of the relay node are avoided.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of notice and transmission method of access capability of via node.
Background technology
At present, third generation partnership project (Third Generation PartnershipProjects abbreviates 3GPP as) is released senior Long Term Evolution (Long-Term Evolutionadvance abbreviates LTE-Advanced as) standard.LTE-Advanced is for Long Term Evolution (Long-Term Evolution, abbreviate LTE as) evolution 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 (Relay) technology is one of technology among the LTE-Advanced, be intended to Extended Cell coverage, reduce area, dead angle in the communication, balanced load, transfer hot zones business, save the transmitting power of terminal (or being called subscriber equipment (User Equipment abbreviates UE as)).
Fig. 1 is the schematic diagram according to the network configuration of utilizing the wireless relay technology of correlation technique, as shown in Figure 1, between original base station (Donor-eNB) and UE, increase some new via node (Relay-Node, abbreviate RN as), RN that these are newly-increased and Donor-eNB be by wireless connections, and do not have wired connection between the transmission network.Wherein, the Radio Link between Donor-eNB and the RN is called back haul link (backhaul link), and the Radio Link between RN and the UE is called access link (access link).Downlink data arrives Donor-eNB earlier, and then passes to RN, and RN transfers to UE again, otherwise then up, does not repeat them here.
In order to dispose the resource of back haul link, defined Physical Downlink Control Channel (the Relay-Physical Dedicated Downlink Control Channel of RN special use, abbreviate R-PDCCH as), Physical Downlink Shared Channel (the Relay-Physical DedicatedDownlink Shared Channel of RN special use, abbreviate R-PDSCH as) and the Physical Uplink Shared Channel (Physical-Dedicated Uplink Shared Channel abbreviates R-PUSCH as) of RN special use.OFDM (the OrthogonalFrequency Division Multiplexing that the R-PDCCH resource receives from RN, abbreviate OFDM as) sign-on, can be part Physical Resource Block (the PhysicalResource Block that is used for the subframe of back haul link downlink transfer, abbreviate PRB as), also can be part of O FDM symbol or the whole OFDM symbol that is used for the subframe of back haul link downlink transfer.
Fig. 2 is the schematic diagram according to the frame structure of the subframe that is used for the back haul link downlink transfer of correlation technique, as shown in Figure 2, R-PDCCH is used for distributing R-PDSCH resource and R-PUSCH resource dynamic or semi-staticly, wherein, the R-PDSCH resource is used to transmit the downlink data of backhaul link, and the R-PUSCH resource is used to transmit the upstream data of backhaul link.Consider compatibility to existing terminal, and for fear of transmission between via node and the base station and the transmission collision between via node and the terminal, in normal transmission course, via node is monitored R-PDCCH and is gone up the descending assignment of base station indication and uplink authorization etc., and realizes the transmission between via node and the base station on corresponding R-PDSCH and R-PUSCH; In addition, via node is assignment of subscriber equipment indicating downlink and uplink authorization etc. on PDCCH, and at corresponding Physical Downlink Shared Channel (Physical DownlinkShared Channel, be called for short PDSCH) and the last transmission that realizes between via node and the subscriber equipment of Physical Uplink Shared Channel (Physical UplinkShared Channel is called for short PUSCH).
Before normal transmission course, the via node of idle condition (RRC_IDLE) need be selected proper cell, by random access procedure (Random AccessProcedure) initial access network, after inserting successfully, network is this via node resource allocation, and the configuration necessary parameter is so that via node can provide service for the UE in the via node coverage.Owing to support the base station of inserting via node need increase extra ability and new protocol infrastructure, therefore, the protocol infrastructure of Relay must be supported to be applied in the sub-district that Relay inserted, and needs to adopt special physical channel to communicate by letter with Relay, also needs the resource of supporting that enough Relay inserts.If the sub-district that Relay attempts to insert does not possess such ability, Relay will expend the random access resource of sub-district when inserting, and, also can postpone the normal access of Relay.In addition, because Relay need support the ability that moves, when switching, because source base station is not known the ability information that the Target cell via node inserts, therefore, the Target cell of selection may not supported the access of via node, thereby also will postpone the cell switch process of Relay.
Summary of the invention
Main purpose of the present invention is to provide a kind of notice and transmission method of via node access capability, to address the above problem at least.
According to an aspect of the present invention, provide a kind of Notification Method of via node access capability, having comprised: the ability information of the via node access of this sub-district is broadcasted in the sub-district by system message; Via node judges whether to insert this sub-district according to aforementioned capabilities information.
Preferably, aforementioned capabilities information comprises: the indication information of indicating this sub-district whether to allow via node to insert, or be used for the configuration information that via node inserts.
Preferably, above-mentioned configuration information comprise following one of at least: be used for chip resource that via node inserts at random, be used for gap information that via node inserts, allow protocol infrastructure type that via node inserts, the configuration information of the Physical Uplink Shared Channel of the configuration information of the Physical Downlink Shared Channel of the configuration information of the Physical Downlink Control Channel of via node special use, via node special use, via node special use.
Further, whether relay node judges can insert above-mentioned sub-district comprises: via node according to the indication of aforementioned capabilities information, judges whether this sub-district allows via node to insert when cell selecting or sub-district gravity treatment, if then determine to insert this sub-district; Otherwise this via node is determined to insert this sub-district.
Further, whether relay node judges can insert above-mentioned sub-district comprises: via node judges according to the indication of aforementioned capabilities information whether this sub-district allows via node to insert, if, then implement the register flow path of via node, perhaps from this sub-district download configuration information in this sub-district; Otherwise via node is not implemented the register flow path or the download configuration information of via node in this sub-district.
According to a further aspect in the invention, a kind of transmission method of via node access capability is provided, for the source base station and the target BS that connect by X2 interface, this method comprises: target BS is by the ability information of X2 interface signaling to the via node access of jurisdiction district, source base station transmission objectives base station.
Further, target BS is after source base station transmission aforementioned capabilities information, and this method also comprises: source base station obtains the ability information of the via node access of target BS jurisdiction district, preserves this ability information.
Further, after source base station obtained aforementioned capabilities information, this method also comprised: source base station is by the ability information of X2 interface signaling to the via node access of jurisdiction district, target BS transmission sources base station.
Further, after source base station obtained aforementioned capabilities information, this method also comprised: when via node switched, source base station was the trunk node selection Target cell according to aforementioned capabilities information; And/or when via node was redirected, source base station was the Target cell that trunk node selection is redirected according to aforementioned capabilities information.
Preferably, aforementioned capabilities information comprises one of following: whether indicating cell allow indication information that via node inserts, support protocol infrastructure that via node inserts, support the time slot that via node inserts, the configuration information of supporting the private resource of via node.
Preferably, above-mentioned X2 interface signaling comprise following one of at least: base station configuration updating information, X2 interface are set up request message, X2 interface is set up response message, switching request acknowledgement message.
By the present invention, the ability information that its via node inserts is broadcasted by system message in the sub-district, thereby the ability information that the via node that makes via node can obtain the sub-district inserts, so that via node reference when selecting to insert the sub-district, thereby avoided owing to via node inserts the problem that the sub-district of not supporting via node to insert causes access-in resource waste and access delay.And, by the present invention, have between source base station that X2 interface connects and the target BS and can transmit the ability information that the via node of this jurisdiction district, base station inserts by X2 interface, thereby make when via node carries out the sub-district switching, can be the Target cell that trunk node selection has the via node access capability according to this ability information, and then make that via node can the correct Target cell of rapid and precise selection when switching.
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 the schematic diagram according to the network configuration of utilizing the wireless relay technology of correlation technique;
Fig. 2 is the schematic diagram according to the frame structure of the subframe that is used for the back haul link downlink transfer of correlation technique;
Fig. 3 is the schematic diagram according to the Notification Method of the via node access capability of the embodiment of the invention;
Fig. 4 is the schematic diagram according to the transmission method of the via node access capability of the embodiment of the invention;
Fig. 5 is the schematic flow sheet of the embodiment of the invention three.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
In embodiments of the present invention, in order to make the via node can rapid and precise selection sub-district when inserting and when switching, the processing method of two kinds of via node access capabilities has been proposed: a kind ofly be the Notification Method of via node access capability, another kind is the transmission method of via node access capability, respectively these two kinds of methods is described below.
Fig. 3 is the schematic diagram according to the Notification Method of the via node access capability of the embodiment of the invention, and as shown in Figure 3, in embodiments of the present invention, the ability information of the via node access of this sub-district is broadcasted in the sub-district by system message.
In specific implementation process, aforementioned capabilities information can be the indication information whether this sub-district of indication allows via node to insert, and perhaps, this ability information also can be to be used for the configuration information that via node inserts in this sub-district.
Particularly, being used for configuration information that via node inserts comprises but is not limited to one of following or its combination in any: be used for chip resource that Relay inserts at random, be used for gap information that Relay inserts, allow the protocol infrastructure type that Relay inserts, the configuration information of R-PDCCH, the configuration information of R-PDSCH, the configuration information of R-PUSCH.
Relay can obtain the ability information of the via node access of this sub-district by the said system message of sub-district, and according to this ability information, Relay can judge whether to insert this sub-district.
Particularly, Relay can judge whether to insert this sub-district and comprise: Relay is when cell selecting or sub-district gravity treatment, can judge whether this sub-district allows Relay to insert according to the ability information of this sub-district, if, then Relay determines to insert this sub-district, otherwise Relay determines to insert this sub-district.As Relay during in cell selecting or sub-district gravity treatment, if receive the ability information of a plurality of Cell Broadcast CBs, then Relay judges according to each ability information, selects the sub-district that allows Relay to insert.
In specific implementation process, if the indication information whether aforementioned capabilities information allows Relay to insert for this sub-district of indication, then Relay can judge whether to select this sub-district to insert according to this indication information; Perhaps, if aforementioned capabilities information is to be used for the configuration information that via node inserts, then Relay can judge according to this configuration information whether this sub-district allows Relay to insert, particularly, if this sub-district allows Relay to insert, then can in said system message, carry effective configuration information, otherwise this sub-district is carried invalid configuration information or is not carried configuration information in said system message.
Further, Relay can judge whether that can insert this sub-district can also comprise: Relay is according to the aforementioned capabilities information of this sub-district, judge whether to implement register flow path and/or the download configuration information of Relay in this sub-district, particularly, if this sub-district allows Relay to insert, then Relay can implement register flow path and/or the download configuration information of Relay in this sub-district, otherwise Relay can not implement register flow path or the download configuration information of Relay in this sub-district.
In embodiments of the present invention, the state of via node in access procedure comprises:
RN is in idle condition, comprise: RN is in idle condition etc. after being in idle condition, Radio Link reconstruction failure when initially powering on, this moment, RN had all or part of function identical with the UE that is in idle condition, as obtained system information, measured and cell selecting/gravity treatment etc.;
RN is in the connection status as UE, this moment, RN had all or part of function identical with the UE that is in connection status, as, obtain system information, measure and report, switch, between base station and RN, carry out data-transformation facility etc. by control channel (PDCCH) and shared channel (PDSCH/PUSCH); This moment, RN did not possess relay function, promptly can't make terminal pass through self access network; Connect dispose procedure by Radio Resource control (RadioResource Control abbreviates RRC as), RN can migrate to idle condition by the connection status as UE;
As the connection status of RN, under this state, RN possesses relay function, and promptly RN has between RN and base station, carries out the relay function of transfer of data between the UE of RN and himself management; Particularly, not only be included between base station and the RN, obtain system information, measure and report, switch, carry out the function of transfer of data by control channel (R-PDCCH) and shared channel (R-PDSCH/R-PUSCH), also has one's own sub-district of management, further comprise the system information that sends self, management belongs to the terminal of self, the measuring process that further comprises the office terminal, the handoff procedure of office terminal carries out function of transfer of data etc. by control channel (PDCCH) and shared channel (PDSCH/PUSCH) between RN and terminal.
According to the said method of the embodiment of the invention, the ability information that Relay can insert according to the via node of each Cell Broadcast CB searches the suitable sub-district that is suitable for inserting apace, finishes the process of Relay as the connection status of RN.
Fig. 4 is the schematic diagram according to the transmission method of the via node access capability of the embodiment of the invention, as shown in Figure 4, in embodiments of the present invention, for the source base station and the target BS that connect by X2 interface, target BS is by the ability information of X2 interface information to the via node access of jurisdiction district, source base station transmission objectives base station.
Particularly, a plurality of if the sub-district that target BS is administered comprises, then target BS all is transferred to source base station with the ability information of the via node access of each sub-district.
And source base station also can be by the ability information of X2 interface signaling to the via node access of jurisdiction district, target BS transmission sources base station.
In specific implementation process, after the ability information of source base station by the via node access of above-mentioned X2 interface signaling acquisition target BS jurisdiction district, can preserve the ability information of the via node access of each sub-district;
And, when Relay switches, the ability information that the via node of each sub-district that source base station can be had jurisdiction over according to the target BS that obtains inserts is Relay select target sub-district, and/or, when Relay was redirected, the ability information that the via node of each sub-district that the target BS that the source base station basis is obtained is had jurisdiction over inserts was redirected Relay's.
Particularly, when switching, source base station can select to allow sub-district that Relay inserts as Target cell for Relay, and when redirected, Relay can be redirected to the sub-district that allows the Relay access.
In specific implementation process, the ability information that target BS inserts to the via node of each sub-district that the target BS of source base station transmission is had jurisdiction over comprises one of following or its combination in any: indication information, the sub-district whether indicating cell allows Relay to insert support protocol infrastructure that Relay inserts, support the time slot that Relay inserts, the configuration information of supporting the private resource (comprising: R-PDCCH, R-PDSCH and R-PUSCH) of Relay.
In concrete the application, above-mentioned X2 interface signaling includes but not limited to: base station configuration updating information, X2 interface are set up request message, X2 interface is set up response message, switching request acknowledgement message.
By the said method that the embodiment of the invention provides, source base station can select correct Target cell to implement to switch when Relay switches.
Below by specific embodiment the technique scheme that the embodiment of the invention provides is described.
Embodiment one
In the LTE system, jurisdiction district, base station (eNB) broadcast system message, in LTE Release9, system message comprises: Master Information Block (Master Information Block, MIB), system information block type (System Information Blocktype, SIB) 1 to SIB12.In concrete enforcement, comprise in the system message: characteristic informations such as the identification information of sub-district, frequency, bandwidth, and subscriber equipment carries out the neighboring BS information of cell selecting or sub-district gravity treatment, and also comprise in the system message: subscriber equipment is initiated the RRC connection request and is inserted the employed configuration parameter of current area (comprising the configuration parameter that inserts at random) etc.
For the via node access capability of indicating cell, need the content of expanding system message, make it comprise the ability information that via node inserts, in the present embodiment, in system message, comprise the indication information whether indicating cell allows Relay to insert.
After Relay initially powered on, Relay implemented cell selecting or sub-district gravity treatment, selected the best sub-district of signal quality on certain frequency in the band support, implemented access process.Relay finds that the best sub-district of signal quality is Cell1 on the frequency f 1 in the process of search cell, the best sub-district of signal quality is Cell2 on frequency f 2, and the best sub-district of signal quality is Cell3 on frequency f 3.
Signal quality refers to performance number (the Reference signal received power that Relay records cell specific reference signal (cell-specificreference signals), abbreviate RSRP as), also needing the specific side-play amount in sub-district when assessment cell signal quality (is q-RxLevMin (in SIB3) during cell selecting; During the sub-district gravity treatment is q-OffsetCell, in SIB4 and SIB5).In existing protocol, do not need to consider the priority of frequency during cell selecting, need be when the gravity treatment of sub-district based on optimum principle in frequency priority and the frequency.
This sub-district of indication does not allow the access of Relay in the system message of Cell1, the access of indication sub-district permission Relay separately respectively in the system message of Cell2 and Cell3.These three sub-districts belong to same network PLMN, after Relay initially powers on, search this three sub-districts, satisfy the condition (PLMN of the Non-Access Stratum selection of Relay is exactly the PLMN of these three sub-districts) of access network, because Cell1 does not allow the access of Relay, Relay has selected Cell2.Relay initiates register flow path in sub-district 2 then, at first initiates at random access process and sets up RRC and connect; Connect by RRC,, implement the flow process of authentication and encryption to the signaling of core net transmission Non-Access Stratum; Set up the DRB that is used for transfer of data again, this moment, Relay was in the connection status as UE.Relay is from configuration management system (O﹠amp then; Msystem is positioned at network side) download configuration information, so that Relay realizes the function of via node, for the subscriber equipment in the Relay coverage provides service.
In the present embodiment, Relay avoids selecting not allow the sub-district of Relay access when implementing cell selecting, and selects the sub-district that the best support Relay of signal quality inserts in the frequency band.Avoid Relay to insert the interface-free resources of inappropriate sub-district consume valuable, the turn-on time of delay Relay.Because some Relay needs for hot job to dispose fast, if network side is supported the information that Relay inserts without any indication, Relay attempts planless selection sub-district to insert, and causes the access delay of Relay very long.
In the present embodiment, Relay selects to support the sub-district of Relay access when cell selecting, does not consider the priority of frequency.Relay also can select the satisfy condition the strongest sub-district (signal quality is best in this frequency band) of (surpassing predetermined threshold) of the highest signal conditioning of frequency priority according to the frequency priority of sub-district, after Relay has selected proper cell, initiate register flow path, download configuration information.
Embodiment two
In the LTE system, jurisdiction district, base station (eNB) broadcast system message, in LTE Release9, system message comprises: MIB, SIB1 are to SIB12.Comprise the ability information that via node inserts in the system message in order to make, the content that needs expanding system message, in the present embodiment, comprise the chip resource (PreambleIndex and/or Mask Index) that is exclusively used in Relay and inserts at random in the system message: if the sub-district allows the access of Relay, the system message of this sub-district has just disposed and effectively has been exclusively used in the chip resource that Relay inserts at random; If the sub-district does not allow the access of Relay, the chip resource that the system message of this sub-district does not just dispose described chip resource or configuration is invalid.
After Relay initially powered on, Relay implemented cell selecting or sub-district gravity treatment, selected the best sub-district of signal quality on certain frequency in the band support, implemented access process.Relay is in the process of search cell, find that it is Cell1 that frequency f 1 (priority of frequency is P1) goes up the best sub-district of signal quality, going up the best sub-district of signal quality in frequency f 2 (priority of frequency is P2) is Cell2, and going up the best sub-district of signal quality in frequency f 3 (priority of frequency is P2) is Cell3.
Indicated separately cell-specific in the chip resource that Relay inserts at random in the system message of Cell1 and Cell2 respectively, the chip resource that does not have configure dedicated to insert at random in the system message of Cell3 in Relay.These three sub-districts belong to same network PLMN, after Relay initially powers on, search this three sub-districts, satisfy the condition (PLMN of the Non-Access Stratum selection of Relay is exactly the PLMN of these three sub-districts) of access network, because Cell3 does not allow the access of Relay, Relay at first implements cell selecting, has selected Cell2; Behind Cell2, implement the sub-district gravity treatment when the Relay detention, selected frequency priority the highest and signal quality satisfy the Cell1 of predetermined threshold.The Relay detention is initiated register flow path (Attach) in this sub-district behind Cell1, at first initiate at random access process and set up RRC and connect; Connect by RRC,, implement the flow process of authentication and encryption to the signaling of core net transmission Non-Access Stratum; Set up the DRB that is used for transfer of data again, this moment, Relay was in the connection status as UE.Relay is from configuration management system (O﹠amp then; M system is positioned at network side) download configuration information, so that Relay realizes the function of via node, for the subscriber equipment in the Relay coverage provides service.Owing to have among the Cell1 and be exclusively used in the chip resource that Relay inserts at random, Relay is initiating just to use when inserting at random this chip resource, when receiving inserting at random of Relay initiation, network side just knows that the subscriber equipment that is not common initiating connection, helps the access control of network side better implement.
In the present embodiment, whether the sub-district allows Relay to insert is by being exclusively used in the chip resource representation that Relay inserts at random, the protocol infrastructure type, the configuration information of R-PDCCH, the configuration information of R-PDSCH or the configuration information of R-PUSCH that also can adopt other configuration informations that are exclusively used in the Relay access such as gap information, allow Relay to insert.These information can combination in any be used, represent that when these information configuration in the system message are effective this sub-district allows Relay to insert, Relay selects to allow the sub-district of Relay access when implementing cell selecting or sub-district gravity treatment, insert the sub-district then and implement register flow path, download configuration information.Need to prove, if the Relay detention in the sub-district that does not allow Relay to insert, Relay can not implement access process and comprise register flow path, the download configuration information implemented.
Embodiment three
In the LTE system, Relay is access base station 1 (source base station) sub-district 1, is in the connection status as RN, and Relay provides service for the subscriber equipment in the coverage.In the present embodiment, this Relay is disposed on the train of quick operation, and Relay provides service for the subscriber equipment on the train, because the mobility of train, this Relay need satisfy mobile characteristic.Because Relay provides service simultaneously for a plurality of subscriber equipmenies in its coverage, so Relay will be accompanied by the state transition (subscriber equipment is by means of the Target cell access network of Relay by switching) of these subscriber equipmenies when switching.The handoff procedure of the handoff procedure of Relay and common subscriber equipment is similar.
When Relay switches, source base station need determine the Target cell that switches, Target cell not only needs the good wireless signal, and need to allow the access of Relay, need protocol infrastructure, the time slot configuration of supporting Relay of supporting Relay, the configuration (configuration information of the configuration information of R-PDCCH, the configuration information of R-PDSCH or R-PUSCH) of supporting the private resource of Relay.
At present embodiment, X2 interface between source base station and target BS pass through transmits the ability information that the Relay of this jurisdiction district, base station inserts, and ability information can be indication information, sub-district that whether the jurisdiction district allows Relay and the insert protocol infrastructure supporting Relay and insert, support the time slot that Relay inserts or support the configuration (configuration information of the configuration information of R-PDCCH, the configuration information of R-PDSCH or R-PUSCH) of the private resource of Relay.These information can be used in combination.
If the adjacent base station of base station 1 has base station 2 (target BS), base station 1 sends the information whether this jurisdiction district, base station allows Relay to insert to base station 2, this part information is preserved after receiving this information in base station 2, and the selection that is applied to the Target cell that Relay switches, and/or be used for be redirected (redirect) to Relay.Response can be returned to base station 1 in base station 2, and also can not echo should.If return response, can in response, carry the ability information that this jurisdiction district, base station is inserted about Relay.The described information that inserts about Relay comprises information, the protocol infrastructure that support Relay inserts, the time slot that support Relay inserts or the configuration (configuration information of the configuration information of R-PDCCH, the configuration information of R-PDSCH or R-PUSCH) of supporting the private resource of the Relay whether jurisdiction district allows Relay to insert; Or their combination in any.In the present embodiment, base station 1 and base station 2 are respectively source base station and target BS, and in fact their role can exchange.
In order to reduce influence to agreement, can adopt the flow process of existing X2 interface to realize above-mentioned functions, configuration information (the Served Cell Information that in existing base station configuration updating (eNB Configuration Update) message, comprises this jurisdiction district, base station, be also referred to as the information of Serving cell), the sign, Tracking Area Code (the Tracking Area Code that have comprised the jurisdiction district, abbreviate TAC as), public land mobile radio communication (PLMN, be used for the carrier network of the current use of identifying user), frequency, bandwidth, frame format information.In order to realize the present invention, need expand the information of Serving cell, make it comprise the ability information that Serving cell inserts about Relay.Idiographic flow is as shown in Figure 5:
Step 501, base station 1 sends base station configuration updating information to base station 2, and the information, the jurisdiction district Cell2 that comprise jurisdiction district Cell1 permission Relay access in this message do not allow the information of Relay access;
Step 502 after base station 2 receives above-mentioned message, is preserved the ability information of the Relay access of Cell1 and Cell2, uses it for the selection of the Target cell that is applied to the Relay switching, and/or is used for be redirected (redirect) to Relay.Be redirected be mainly used in when network side discharge with being connected of Relay after, guide the Relay detention to the sub-district of specified frequency or appointment.Base station 2 is also returned base station configuration updating to base station 1 and is confirmed.
Need to prove, X2 in the existing protocol sets up request (X2 Setup Request) and X2 foundation response (X2 Setup Response) message also can be used to transmit the ability information that the jurisdiction district is inserted about Relay, method and above-mentioned flow process are similar, repeat no more herein.And in the present embodiment, source base station can also be known the ability information that the target BS jurisdiction district is inserted about Relay by switching request acknowledgement message.In addition, in the present embodiment, the role of base station 1 and base station 2 can exchange, and promptly base station 1 can be a target BS, and base station 2 can be a source base station.After the ability information that obtains by same flow process to insert about Relay 2 jurisdiction districts, base station (Cell3, Cell4 and Cell5) when base station 1, when the Relay that is positioned at sub-district 1 need switch, the measurement report that base station 1 reports according to Relay is selected the candidate cell of jurisdiction district for switching of base station 2, again because the ability information that 2 each sub-district, base station are inserted about Relay, base station 1 selects to allow the sub-district of Relay access as the Target cell that switches in described candidate cell, send handoff request to base station 2 then, smooth implementation switches.
From above description, in embodiments of the present invention, the ability information that its via node inserts is broadcasted by system message in the sub-district, thereby the ability information that the via node that makes via node can obtain the sub-district inserts, so that via node reference when selecting to insert the sub-district, thereby avoided owing to via node inserts the problem that the sub-district of not supporting via node to insert causes access-in resource waste and access delay.And, pass through the embodiment of the invention, have between source base station that X2 interface connects and the target BS and can transmit the ability information that the via node of this jurisdiction district, base station inserts by X2 interface, thereby make when via node carries out the sub-district switching, can be the Target cell that trunk node selection has the via node access capability according to this ability information, and then make that via node can the correct Target cell of rapid and precise selection when switching.
Obviously, those skilled in the art should be understood 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, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, 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 the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the Notification Method of a via node access capability is characterized in that, comprising:
The ability information of the via node access of described sub-district is broadcasted in the sub-district by system message;
Via node judges whether to insert described sub-district according to described ability information.
2. method according to claim 1 is characterized in that, described ability information comprises: the indication information of indicating described sub-district whether to allow via node to insert, or be used for the configuration information that via node inserts.
3. method according to claim 2, it is characterized in that, described configuration information comprise following one of at least: be used for chip resource that via node inserts at random, be used for gap information that via node inserts, allow protocol infrastructure type that via node inserts, the configuration information of the Physical Uplink Shared Channel of the configuration information of the Physical Downlink Shared Channel of the configuration information of the Physical Downlink Control Channel of via node special use, via node special use, via node special use.
4. according to each described method in the claim 1 to 3, it is characterized in that whether described relay node judges can insert described sub-district comprises:
Described via node according to the indication of described ability information, judges whether described sub-district allows via node to insert, if then determine to insert described sub-district when cell selecting or sub-district gravity treatment; Otherwise,
Described via node is determined to insert described sub-district.
5. according to each described method in the claim 1 to 3, it is characterized in that whether described relay node judges can insert described sub-district comprises:
Described via node is according to the indication of described ability information, judges whether described sub-district allows via node to insert, if then implement the register flow path of via node in described sub-district, perhaps from described sub-district download configuration information; Otherwise
Described via node is not implemented the register flow path or the download configuration information of via node in described sub-district.
6. the transmission method of a via node access capability is characterized in that, for the source base station and the target BS that connect by X2 interface, described method comprises:
Described target BS transmits the ability information of the via node access of described target BS jurisdiction district to described source base station by the X2 interface signaling.
7. method according to claim 6 is characterized in that, described target BS is after described source base station transmits described ability information, and described method also comprises:
Described source base station obtains the ability information of the via node access of described target BS jurisdiction district, preserves described ability information.
8. method according to claim 7 is characterized in that, after described source base station obtained described ability information, described method also comprised:
Described source base station transmits the ability information of the via node access of described source base station jurisdiction district to described target BS by the X2 interface signaling.
9. method according to claim 6 is characterized in that, after described source base station obtained described ability information, described method also comprised:
When via node switched, described source base station was described trunk node selection Target cell according to described ability information; And/or,
When via node was redirected, described source base station was the Target cell that described trunk node selection is redirected according to described ability information.
10. according to each described method in the claim 6 to 9, it is characterized in that it is one of following that described ability information comprises: whether indicating cell allow indication information that via node inserts, support protocol infrastructure that via node inserts, support the time slot that via node inserts, the configuration information of supporting the private resource of via node.
11. according to each described method in the claim 6 to 9, it is characterized in that, described X2 interface signaling comprise following one of at least: base station configuration updating information, X2 interface are set up request message, X2 interface is set up response message, switching request acknowledgement message.
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