CN102123480B - The notice of access capability of relay node and transmission method - Google Patents
The notice of access capability of relay node and transmission method Download PDFInfo
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- CN102123480B CN102123480B CN201010004520.1A CN201010004520A CN102123480B CN 102123480 B CN102123480 B CN 102123480B CN 201010004520 A CN201010004520 A CN 201010004520A CN 102123480 B CN102123480 B CN 102123480B
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Abstract
The invention discloses a kind of notice and transmission method of access capability of via node.Wherein, the Notification Method of access capability of relay node comprises: the ability information of the via node access of this community is broadcasted in community by system message; Via node judges whether to access this community according to aforementioned capabilities information.Pass through the present invention, make via node can obtain the ability information of the via node access of community, to make via node reference when selecting access community, thus avoid and do not support due to via node access the community that via node access and cause access-in resource waste and the problem of access delay.
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 (ThirdGenerationPartnershipProjects, referred to as 3GPP) releases senior Long Term Evolution (Long-TermEvolutionadvance, referred to as LTE-Advanced) standard.LTE-Advanced is for Long Term Evolution (Long-TermEvolution, referred to as LTE) evolution remain the core of LTE, and adopt a series of technology to expand frequency domain, spatial domain on this basis, improve the availability of frequency spectrum to reach, increase the objects such as power system capacity.Wireless relay (Relay) technology is one of technology in LTE-Advanced, be intended to the area, dead angle in the coverage of Extended Cell, minimizing communication, balanced load, the business of transfer hot zones, the transmitting power of saving terminal (or being called subscriber equipment (UserEquipment, referred to as UE)).
Fig. 1 is the schematic diagram utilizing the network configuration of wireless relaying technique according to correlation technique, as shown in Figure 1, via node (the Relay-Node that some are new is increased between original base station (Donor-eNB) and UE, referred to as RN), these newly-increased RN and Donor-eNB by wireless connections, and do not have wired connection between transmission network.Wherein, the wireless link between Donor-eNB and RN is called back haul link (backhaullink), and the wireless link between RN and UE is called access link (accesslink).Downlink data first arrives Donor-eNB, and then passes to RN, and RN transfers to UE again, otherwise then up, does not repeat them here.
In order to configure the resource of back haul link, define the Physical Downlink Control Channel (Relay-PhysicalDedicatedDownlinkControlChannel that RN is special, referred to as R-PDCCH), the special Physical Downlink Shared Channel (Relay-PhysicalDedicatedDownlinkSharedChannel of RN, referred to as R-PDSCH) and the special Physical Uplink Shared Channel (Physical-DedicatedUplinkSharedChannel, referred to as R-PUSCH) of RN.OFDM (the OrthogonalFrequencyDivisionMultiplexing that R-PDCCH resource receives from RN, referred to as OFDM) sign-on, can be for the part physical Resource Block (PhysicalResourceBlock in the subframe of back haul link downlink transfer, referred to as PRB), also can be for the part OFDM symbol in the subframe of back haul link downlink transfer or whole OFDM symbol.
Fig. 2 is the schematic diagram of the frame structure of the subframe for back haul link downlink transfer according to correlation technique, as shown in Figure 2, R-PDCCH is used for dynamically or semi-statically distributes R-PDSCH resource and R-PUSCH resource, wherein, R-PDSCH resource is for transmitting the downlink data of backhaullink, and R-PUSCH resource is for transmitting the upstream data of backhaullink.Consider the compatibility to existing terminal, and in order to avoid the transmission between via node and base station and the transmission collision between via node and terminal, in normal transmitting procedure, the descending assignment of base station instruction on via node monitoring R-PDCCH and uplink authorization etc., and on corresponding R-PDSCH and R-PUSCH, realize the transmission between via node and base station; In addition, via node is the assignment of subscriber equipment indicating downlink and uplink authorization etc. on PDCCH, and at corresponding Physical Downlink Shared Channel (PhysicalDownlinkSharedChannel, be called for short PDSCH) and Physical Uplink Shared Channel (PhysicalUplinkSharedChannel, abbreviation PUSCH) on realize between via node and subscriber equipment transmission.
Before normal transmitting procedure, the via node of idle condition (RRC_IDLE) needs to select suitable community, by random access procedure (RandomAccessProcedure) initial access network, access successfully, network is this via node resource allocation, and the parameter of configuration necessity is so that via node can provide service for the UE in via node coverage.Owing to supporting that the base station of access via node needs to increase extra ability and new protocol infrastructure, therefore, the protocol infrastructure being applied to Relay must be supported in the community that Relay accesses, and needs to adopt special physical channel to communicate with Relay, also needs the resource enough supporting Relay to access.If the community that Relay attempts to access does not possess such ability, during Relay access, will the random access resource of community be expended, and, also can postpone the normal access of Relay.In addition, because Relay needs the ability supporting movement, when switching, because source base station does not know the ability information of Target cell via node access, therefore, the access of via node may not be supported in the Target cell of selection, thus also will postpone the cell switch process of Relay.
Summary of the invention
Main purpose of the present invention is the notice and the transmission method that provide a kind of access capability of relay node, at least to solve the problem.
According to an aspect of the present invention, provide a kind of Notification Method of access capability of relay node, comprising: the ability information of the via node access of this community is broadcasted in community by system message; Via node judges whether to access this community according to aforementioned capabilities information.
Preferably, aforementioned capabilities information comprises: the indication information indicating this community whether to allow via node to access, or for the configuration information of via node access.
Preferably, above-mentioned configuration information comprise following one of at least: the configuration information of the Physical Uplink Shared Channel that the configuration information of the Physical Downlink Shared Channel that the chip resource for via node Stochastic accessing, the gap information for via node access, the configuration information of Physical Downlink Control Channel allowing the protocol infrastructure type of via node access, via node special, via node are special, via node are special.
Further, whether relay node judges can access above-mentioned community comprises: via node, when community selection or cell reselection, according to the instruction of aforementioned capabilities information, judges whether this community allows via node to access, if so, then determine to access this community; Otherwise this via node is determined to access this community.
Further, whether relay node judges can access above-mentioned community comprises: via node, according to the instruction of aforementioned capabilities information, judges whether this community allows via node to access, if, the register flow path of via node is implemented in Ze Gai community, or from this community download configuration information; Otherwise register flow path or the download configuration information of via node are implemented in via node Bu Gai community.
According to a further aspect in the invention, provide a kind of transmission method of access capability of relay node, for the source base station connected by X2 interface and target BS, the method comprises: the ability information that target BS is accessed to the via node of jurisdiction district, source base station transmission objectives base station by X2 interface signaling.
Further, target BS is to after source base station transmission aforementioned capabilities information, and the 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 obtains aforementioned capabilities information, the method also comprises: the ability information that source base station is accessed to the via node of jurisdiction district, target BS transmission sources base station by X2 interface signaling.
Further, after source base station obtains aforementioned capabilities information, the method also comprises: when via node switches, and source base station is trunk node selection Target cell according to aforementioned capabilities information; And/or when carrying out redirected to via node, source base station is the Target cell that trunk node selection is redirected according to aforementioned capabilities information.
Preferably, aforementioned capabilities information comprises one of following: the indication information whether indicating cell allows via node to access, the configuration information supported the protocol infrastructure of via node access, support the time slot of via node access, support 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 set up request message, X2 interface sets up response message, switching request acknowledgement message.
Pass through the present invention, the ability information of its via node access is broadcasted by system message in community, thus make via node can obtain the ability information of the via node access of community, to make via node reference when selecting access community, thus avoid and do not support due to via node access the community that via node access and cause access-in resource waste and the problem of access delay.And, pass through the present invention, be there is the ability information can being transmitted the via node access of this jurisdiction district, base station between the source base station of X2 interface connection and target BS by X2 interface, thus make when via node carries out cell merge, can be the Target cell that trunk node selection has access capability of relay node according to this ability information, and then make via node can select correct Target cell fast and accurately when switching.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram utilizing the network configuration of wireless relaying technique according to correlation technique;
Fig. 2 is the schematic diagram of the frame structure of the subframe for back haul link downlink transfer according to correlation technique;
Fig. 3 is the schematic diagram of the Notification Method of access capability of relay node according to the embodiment of the present invention;
Fig. 4 is the schematic diagram of the transmission method of access capability of relay node according to the embodiment of the present invention;
Fig. 5 is the schematic flow sheet of the embodiment of the present invention three.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
In embodiments of the present invention, when accessing and when switching, community is selected fast and accurately in order to enable via node, propose the processing method of two kinds of access capability of relay nodes: a kind of Notification Method for access capability of relay node, another kind is the transmission method of access capability of relay node, is described respectively below to these two kinds of methods.
Fig. 3 is the schematic diagram of the Notification Method of access capability of relay node according to the embodiment of the present invention, and as shown in Figure 3, in embodiments of the present invention, the ability information of the via node access of this community is broadcasted in community by system message.
In specific implementation process, aforementioned capabilities information can be this community of instruction indication information of whether allowing via node access, or, the configuration information that this ability information also can access for via node in Shi Zhe community.
Particularly, the configuration information for via node access includes but not limited to one of following or its combination in any: the chip resource for Relay Stochastic accessing, the gap information for Relay access, allow protocol infrastructure type, the configuration information of R-PDCCH, the configuration information of R-PDSCH, the configuration information of R-PUSCH of Relay access.
Relay can obtain the ability information of the via node access of this community by the said system message of community, according to this ability information, Relay can judge whether to access this community.
Particularly, Relay can judge whether that can access this community comprises: Relay is when community selection or cell reselection, can judge whether this community allows Relay to access according to the ability information of this community, if, then Relay determines to access this community, otherwise Relay determines to access this community.When Relay is in community selection or cell reselection, if receive the ability information of multiple Cell Broadcast CB, then Relay judges according to each ability information, selects the community allowing Relay access.
In specific implementation process, if aforementioned capabilities information is the indication information whether this community of instruction allows Relay to access, then Relay can judge whether to select this community to access according to this indication information; Or, if aforementioned capabilities information is the configuration information for via node access, then according to this configuration information, Relay can judge whether this community allows Relay to access, particularly, if this community allows Relay access, then can carry effective configuration information in said system message, otherwise this community is carried invalid configuration information or is not carried configuration information in said system message.
Further, Relay can judge whether that can access this community can also comprise: Relay is according to the aforementioned capabilities information of this community, judge whether register flow path and/or the download configuration information of implementing Relay in this community, particularly, if this community allows Relay access, then Relay can implement register flow path and/or the download configuration information of Relay in this community, otherwise Relay can not implement register flow path or the download configuration information of Relay in this community.
In embodiments of the present invention, the state of via node in access procedure comprises:
RN is in idle condition, comprise: after being in idle condition, wireless link reconstruction failure when RN initially powers on, be in idle condition etc., now RN has all or part of function identical with the UE being in idle condition, as obtained system information, carries out measurement and community selection/reselection etc.;
RN is in the connection status as UE, now RN has all or part of function identical with the UE being 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); Now RN does not possess relay function, and terminal namely cannot be made by self access network; By wireless heterogeneous networks (RadioResourceControl, referred to as RRC) Connection Release process, 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 namely RN has between RN and base station, carries out the relay function of transfer of data between RN and the UE of himself management, particularly, not only be included between base station and RN, obtain system information, measure and report, switch, the function of transfer of data is carried out by control channel (R-PDCCH) and shared channel (R-PDSCH/R-PUSCH), also there is management one's own community, comprise the system information sending self further, manage the terminal belonging to self, comprise the measuring process of office terminal further, the handoff procedure of office terminal, carried out the function etc. of transfer of data by control channel (PDCCH) and shared channel (PDSCH/PUSCH) between RN and terminal.
According to the said method of the embodiment of the present invention, the ability information that Relay can access according to the via node of each Cell Broadcast CB, searches the suitable community being suitable for accessing rapidly, completes the process of Relay as the connection status of RN.
Fig. 4 is the schematic diagram of the transmission method of access capability of relay node according to the embodiment of the present invention, as shown in Figure 4, in embodiments of the present invention, for the source base station connected by X2 interface and target BS, the ability information that target BS is accessed to the via node of jurisdiction district, source base station transmission objectives base station by X2 interface information.
Particularly, if the community that target BS is administered comprises multiple, then the ability information that the via node of each community accesses all is transferred to source base station by target BS.
Further, the source base station ability information that also can be accessed to the via node of jurisdiction district, target BS transmission sources base station by X2 interface signaling.
In specific implementation process, source base station can preserve the ability information of the via node access of each community after obtaining the ability information of via node access of target BS jurisdiction district by above-mentioned X2 interface signaling;
And, when Relay switches, source base station can be Relay select target community according to the ability information of the via node access of administrative each community of target BS obtained, and/or, when carrying out redirected to Relay, source base station is according to ability information being redirected Relay of the via node access of administrative each community of target BS obtained.
Particularly, when switching, source base station can be selected to allow the community of Relay access as Target cell for Relay, and when redirected, Relay can be redirected to the community allowing Relay access.
In specific implementation process, the ability information of the via node of each community that the target BS that target BS transmits to source base station is administrative access comprises one of following or its combination in any: the indication information whether indicating cell allows Relay access, community are supported the protocol infrastructure of Relay access, supported the time slot of Relay access, the configuration information of the private resource (comprising: R-PDCCH, R-PDSCH and R-PUSCH) of support Relay.
In a particular application, above-mentioned X2 interface signaling includes but not limited to: base station configuration updating information, X2 interface set up request message, X2 interface sets up response message, switching request acknowledgement message.
By the said method that the embodiment of the present invention provides, when Relay switches, source base station can select correct Target cell to implement to switch.
Below by specific embodiment, the technique scheme that the embodiment of the present invention provides is described.
Embodiment one
In LTE system, base station (eNB) jurisdiction district broadcast system message, in LTERelease9, system message comprises: Master Information Block (MasterInformationBlock, MIB), system information block type (SystemInformationBlocktype, SIB) 1 is to SIB12.In concrete enforcement, system message comprises: the characteristic information such as identification information, frequency, bandwidth of community, and subscriber equipment carries out the neighboring BS information of community selection or cell reselection, further, also comprise in system message: the configuration parameter (comprising the configuration parameter of Stochastic accessing) etc. that RRC connection request access current area uses initiated by subscriber equipment.
In order to the access capability of relay node of indicating cell, need the content of expanding system message, make it comprise the ability information of via node access, in the present embodiment, in system message, comprise the indication information whether indicating cell allows Relay to access.
After Relay initially powers on, Relay implements community and selects or cell reselection, selects the community that on certain frequency in band support, signal quality is best, implements access process.Relay is in the process of search cell, and find that the community that in frequency f 1, signal quality is best is Cell1, the community that signal quality is best is on frequency f 2 Cell2, and the community that signal quality is best in frequency f 3 is Cell3.
Signal quality refers to the performance number (Referencesignalreceivedpower that Relay records cell specific reference signal (cell-specificreferencesignals), referred to as RSRP), also need the specific side-play amount in community (to be q-RxLevMin (in SIB3) when community is selected when assessing cell signal quality; Be q-OffsetCell during cell reselection, in SIB4 and SIB5).In existing protocol, do not need the priority considering frequency when community is selected, need when cell reselection based on principle optimum in frequency priority and frequency.
Indicate this community not allow the access of Relay in the system message of Cell1, in the system message of Cell2 and Cell3, indicate respective community to allow the access of Relay respectively.These three communities belong to same network PLMN, after Relay initially powers on, search this three communities, meet the condition (PLMN of the Non-Access Stratum selection of Relay is exactly the PLMN of these three communities) of access network, because Cell1 does not allow the access of Relay, Relay have selected Cell2.Then Relay initiates register flow path in community 2, first initiates random access procedure and sets up RRC connection; Connected by RRC, send the signaling of Non-Access Stratum to core net, the flow process of implementing authentication and encryption; Set up the DRB being used for transfer of data again, now Relay is in the connection status as UE.Then Relay is from configuration management system (O & Msystem, is positioned at network side) download configuration information, so that Relay realizes the function of via node, for the subscriber equipment in Relay coverage provides service.
In the present embodiment, Relay avoids the community selecting not allow Relay to access when implementing community and selecting, and selects the community of inband signal top-quality support Relay access.Avoid Relay to access inappropriate community to expend valuable interface-free resources, postpone the turn-on time of Relay.Because some Relay needs rapid deployment in order to hot job, if network side supports the information of Relay access without any instruction, access is attempted in planless selection community by Relay, causes the access delay of Relay very long.
In the present embodiment, select the community supporting Relay access when Relay selects in community, do not consider the priority of frequency.Relay also can select the highest signal conditioning of frequency priority to satisfy condition the Qiang community (this inband signal is best in quality) of (exceeding predetermined threshold) according to the frequency priority of community, after Relay have selected suitable community, initiate register flow path, download configuration information.
Embodiment two
In LTE system, base station (eNB) jurisdiction district broadcast system message, in LTERelease9, system message comprises: MIB, SIB1 to SIB12.In order to make the ability information comprising via node access in system message, need the content of expanding system message, in the present embodiment, the chip resource (PreambleIndex and/or MaskIndex) being exclusively used in Relay Stochastic accessing is comprised: if community allows the access of Relay, the system message of this community is just configured with the chip resource being effectively exclusively used in Relay Stochastic accessing in system message; If community does not allow the access of Relay, the system message of this community does not just configure described chip resource or the chip resource inefficiencies of configuration.
After Relay initially powers on, Relay implements community and selects or cell reselection, selects the community that on certain frequency in band support, signal quality is best, implements access process.Relay is in the process of search cell, find that frequency f 1 (priority of frequency the is P1) community that above signal quality is best is Cell1, the community best at the upper signal quality of frequency f 2 (priority of frequency is P2) is Cell2, and the community best at the upper signal quality of frequency f 3 (priority of frequency is P2) is Cell3.
Indicate respective cell-specific in the system message of Cell1 and Cell2 respectively in the chip resource of Relay Stochastic accessing, there is no configure dedicated in the system message of Cell3 in the chip resource of Relay Stochastic accessing.These three communities belong to same network PLMN, after Relay initially powers on, search this three communities, meet the condition (PLMN of the Non-Access Stratum selection of Relay is exactly the PLMN of these three communities) of access network, because Cell3 does not allow the access of Relay, first Relay implements community and selects, and have selected Cell2; When Relay detention implements cell reselection after Cell2, have selected the Cell1 that the highest and signal quality of frequency priority meets predetermined threshold.Relay detention, after Cell1, initiates register flow path (Attach) in this community, first initiates random access procedure and sets up RRC connection; Connected by RRC, send the signaling of Non-Access Stratum to core net, the flow process of implementing authentication and encryption; Set up the DRB being used for transfer of data again, now Relay is in the connection status as UE.Then Relay is from configuration management system (O & Msystem, is positioned at network side) download configuration information, so that Relay realizes the function of via node, for the subscriber equipment in Relay coverage provides service.Owing to there being the chip resource being exclusively used in Relay Stochastic accessing in Cell1, Relay just uses this chip resource when initiating Stochastic accessing, just know it is not that common subscriber equipment connects in initiation when network side receives the Stochastic accessing of Relay initiation, be conducive to network side and better implement access control.
In the present embodiment, whether community allows Relay to access is by the chip resource representation being exclusively used in Relay Stochastic accessing, and other configuration informations being exclusively used in Relay access also can be adopted as the configuration information of gap information, the protocol infrastructure type allowing Relay access, the configuration information of R-PDCCH, the configuration information of R-PDSCH or R-PUSCH.These information can combination in any use, represent that when these information configuration in system message are effective this community allows Relay access, Relay selects when implementing community selection or cell reselection the community allowing Relay access, then accesses community enforcement register flow path, download configuration information.It should be noted that, if Relay detention is in the community not allowing Relay to access, Relay can not implement access process and comprise enforcement register flow path, download configuration information.
Embodiment three
In LTE system, Relay is access base station 1 (source base station) community 1, is in the connection status as RN, and Relay provides service for the subscriber equipment in coverage.In the present embodiment, this Relay is configured on the train that runs fast, and Relay provides service for the subscriber equipment on train, due to the mobility of train, and the characteristic of this Relay demand fulfillment movement.Due to Relay for the multiple subscriber equipmenies in its coverage provide service simultaneously, when therefore Relay switches, by the state transition (subscriber equipment is by means of the Target cell access network of Relay by switching) along with these subscriber equipmenies.The handoff procedure of Relay and the handoff procedure of common subscriber equipment similar.
When Relay switches, source base station needs the Target cell determining to switch, Target cell not only needs good wireless signal, and need the access allowing Relay, the configuration (configuration information of the configuration information of R-PDCCH, the configuration information of R-PDSCH or R-PUSCH) needing the protocol infrastructure of support Relay, support the time slot configuration of Relay, support the private resource of Relay.
At the present embodiment, source base station and target BS by between the ability information that accesses of the X2 interface Relay that transmits this jurisdiction district, base station, ability information can be that indication information, the community whether jurisdiction district allows Relay and access is supported the protocol infrastructure of Relay access, supports the time slot of Relay access or supported the configuration (configuration information of the configuration information of R-PDCCH, the configuration information of R-PDSCH or R-PUSCH) of private resource of Relay.These information can combinationally use.
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 access to base station 2, this part information is preserved after receiving this information in base station 2, and be applied to the selection of the Target cell that Relay switches, and/or for redirected (redirect) to Relay.Base station 2 can return response to base station 1, and also can not echo should.If return response, the ability information that this jurisdiction district, base station is accessed about Relay can be carried in the response.The described packets of information about Relay access contains 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 information, the protocol infrastructure supporting Relay access, the time slot supporting Relay access or the support Relay whether jurisdiction district allows Relay to access; 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 the impact on agreement, the flow process of existing X2 interface can be adopted to realize above-mentioned functions, configuration information (the ServedCellInformation of this jurisdiction district, base station is comprised in existing base station configuration updating (eNBConfigurationUpdate) message, information also referred to as Serving cell), comprise the mark of jurisdiction district, Tracking Area Code (TrackingAreaCode, referred to as TAC), 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 to expand the information of Serving cell, the ability information making it comprise Serving cell to access 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, comprises the information that jurisdiction district Cell1 allows the information of Relay access, jurisdiction district Cell2 does not allow Relay to access within the message;
Step 502, after base station 2 receives above-mentioned message, preserves the ability information of the Relay access of Cell1 and Cell2, uses it for the selection being applied to the Target cell that Relay switches, and/or for redirected (redirect) to Relay.Be redirected and be mainly used in, when after network side release with the connection of Relay, guiding Relay detention in the frequency of specifying or the community of specifying.Base station 2 also returns base station configuration updating and confirms to base station 1.
It should be noted that, X2 in existing protocol sets up request (X2SetupRequest) and X2 sets up the ability information responding (X2SetupResponse) message and also may be used for accessing about Relay transmission jurisdiction district, method and above-mentioned flow process similar, repeat no more herein.Further, in the present embodiment, source base station can also know by switching request acknowledgement message the ability information that target BS jurisdiction district is accessed about Relay.In addition, in the present embodiment, the role of base station 1 and base station 2 can exchange, and namely base station 1 can be target BS, and base station 2 can be source base station.When after the ability information that base station 1 is accessed about Relay by same flow process acquisition jurisdiction district, base station 2 (Cell3, Cell4 and Cell5), when the Relay being positioned at community 1 needs to switch, base station 1 selects the jurisdiction district of base station 2 to be the candidate cell switched according to the measurement report that Relay reports, again due to ability information that each community, base station 2 is accessed about Relay, base station 1 is selected to allow the community of Relay access as the Target cell switched in described candidate cell, then send handover request to base station 2, implement smoothly to switch.
From above description, in embodiments of the present invention, the ability information of its via node access is broadcasted by system message in community, thus make via node can obtain the ability information of the via node access of community, to make via node reference when selecting access community, thus avoid and do not support due to via node access the community that via node access and cause access-in resource waste and the problem of access delay.And, pass through the embodiment of the present invention, be there is the ability information can being transmitted the via node access of this jurisdiction district, base station between the source base station of X2 interface connection and target BS by X2 interface, thus make when via node carries out cell merge, can be the Target cell that trunk node selection has access capability of relay node according to this ability information, and then make via node can select correct Target cell fast and accurately when switching.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a Notification Method for access capability of relay node, is characterized in that, comprising:
The ability information of the via node access of described community is broadcasted in community by system message;
Via node judges whether to access described community according to described ability information;
Wherein, described ability information comprises: the indication information indicating described community whether to allow via node to access, or for the configuration information of via node access.
2. method according to claim 1, it is characterized in that, described configuration information comprise following one of at least: the configuration information of the Physical Uplink Shared Channel that the configuration information of the Physical Downlink Shared Channel that the chip resource for via node Stochastic accessing, the gap information for via node access, the configuration information of Physical Downlink Control Channel allowing the protocol infrastructure type of via node access, via node special, via node are special, via node are special.
3. method according to any one of claim 1 to 2, is characterized in that, whether described relay node judges can access described community comprises:
Described via node, when community selection or cell reselection, according to the instruction of described ability information, judges whether described community allows via node to access, if so, then determines to access described community; Otherwise,
Described via node is determined to access described community.
4. method according to any one of claim 1 to 2, is characterized in that, whether described relay node judges can access described community comprises:
Described via node, according to the instruction of described ability information, judges whether described community allows via node to access, and if so, then implements the register flow path of via node in described community, or from described community download configuration information; Otherwise
Described via node does not implement register flow path or the download configuration information of via node in described community.
5. a transmission method for access capability of relay node, is characterized in that, for the source base station connected by X2 interface and target BS, 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 X2 interface signaling;
Wherein, described ability information comprises one of following: the indication information whether indicating cell allows via node to access, the configuration information supported the protocol infrastructure of via node access, support the time slot of via node access, support the private resource of via node.
6. method according to claim 5, is characterized in that, described target BS is to 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.
7. method according to claim 6, is characterized in that, after described source base station obtains described ability information, described method also comprises:
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 X2 interface signaling.
8. method according to claim 5, is characterized in that, after described source base station obtains described ability information, described method also comprises:
When via node switches, described source base station is described trunk node selection Target cell according to described ability information; And/or,
When carrying out redirected to via node, described source base station is the Target cell that described trunk node selection is redirected according to described ability information.
9. the method according to any one of claim 5 to 8, is characterized in that, described X2 interface signaling comprise following one of at least: base station configuration updating information, X2 interface set up request message, X2 interface sets up response message, switching request acknowledgement message.
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| CN103096393B (en) * | 2011-10-27 | 2015-08-19 | 普天信息技术研究院有限公司 | A kind of changing method of mobile relay |
| CN103313326A (en) * | 2012-03-13 | 2013-09-18 | 北京三星通信技术研究有限公司 | Method for supporting relay switching |
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| WO2014153770A1 (en) * | 2013-03-29 | 2014-10-02 | Broadcom Corporation | Method and apparatus for reestablishing communication with a network |
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