CN102984772B - A kind of switching method of relay station, relay station and network node - Google Patents
A kind of switching method of relay station, relay station and network node Download PDFInfo
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- CN102984772B CN102984772B CN201110264173.0A CN201110264173A CN102984772B CN 102984772 B CN102984772 B CN 102984772B CN 201110264173 A CN201110264173 A CN 201110264173A CN 102984772 B CN102984772 B CN 102984772B
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Abstract
The invention discloses a kind of switching method of relay station, relay station and network node, backhaul link transmission and conflicting that access link is transmitted in relay station handoff procedure are reduced.The processing performed by relay station includes：Relay station receives the handover configurations information from target network node, and the handover configurations information is to be configured by target network node according to the backhaul subframe configuration information of the relay station；The relay station is in handoff procedure, the transmission relevant with switching is carried out in the backhaul subframe indicated according to handover configurations information in the handover configurations information or the continuous subframes comprising backhaul subframe, access link transmission is carried out in other all or part of subframes without the transmission relevant with switching.The processing performed by network node includes：Target network node configures the handover configurations information of the relay station according to the backhaul subframe configuration information of to be switched relay station；The target network node sends handover configurations information to the relay station.
Description
Technical field
The invention belongs to moving communicating field, more particularly to a kind of switching method of relay station, relay station and network section
Point.
Background technology
Relaying technique causes more and more extensive attention, is considered as B3G/4G key as a kind of emerging technology
Technology.Because future wireless system or cellular system require increase coverage, higher rate transmission is supported, this is to radio communication
Technology proposes new challenge.Meanwhile, system building and the cost issues safeguarded more are protruded.With transmission rate and communicate away from
From increase, the energy consumption issues of battery also become prominent, and following radio communication will use higher frequency, thereby result in
Pathloss attenuation it is more serious.By relaying technique, traditional one hop link can be divided into multiple multi-hop links, due to
Distance Shortened, this will greatly reduce path loss, be favorably improved transmission quality, expand communication range, so as to be carried for user
For more rapidly better service.
In junction network, relay station (RN) participates in link quilt of the relaying cell user (R-UE) of service between relay station
Referred to as access link (Access Link), its corresponding interface is referred to as Uu interfaces, the chain between relay station and own base station (DeNB)
Road is referred to as back haul link (Backhaul Link), and its corresponding interface is referred to as Un interfaces, and the macrocell that base station is directly serviced is used
Link of the family (M-UE) between base station is referred to as the link (Direct Link) that direct transfers, as shown in Figure 1.
If back haul link and access link are operated on identical frequency spectrum, such relay station is referred to as with interior relaying
(In-band RN).Generally, while downlink transfer from base station is being received with interior relay station, if with interior
Downlink also is being carried out to relaying cell user after station, or the same of up transmitting ought carried out to base station with interior relay station
When, if also receiving the up transmitting from relaying cell user with interior relay station, it can all cause with interior relay station itself
Interference is produced between transmitting terminal and receiving terminal, the severe exacerbation of communication quality is caused.Relay station described herein, such as without special theory
It is bright, refer both to interior relay station.
In order to avoid producing interference between the receiving terminal and transmitting terminal of relay station itself, for interior relaying, back haul link
With descending or up transmission can not be carried out on access link simultaneously, and must stagger in time.Therefore, it will be used at present
The subframe of relay station transmission is divided into backhaul subframe and access subframe, and the back haul link downlink and uplink of relay station is transmitted respectively under
Carried out on row and up backhaul subframe, and downlink and uplink access subframe is then specially respectively used to access link downlink and uplink biography
It is defeated.In addition, for descending backhaul subframe, relay station needs preceding 1 or 2 OFDM (Orthogonal in the burst
Frequency Division Multiplexing, OFDM) downlink of access link is carried out on symbol, i.e.,
Downlink is carried out to user by descending access link, and the descending of back haul link is carried out in remaining available symbols connecing
Receive, i.e., the downlink transfer from base station is received by descending back haul link.
For the work opportunity of clear and definite back haul link and working method, base station can be carried out to the backhaul subframe pattern of relay station
Configuration.When the backhaul subframe pattern of relay station be configured complete, relay station also need to according to the backhaul subframe pattern configured come
Control relaying cell user in corresponding backhaul subframe operation time without transmission.At present, generally, relay station passes through
Uplink scheduling come realize relaying cell user in up backhaul subframe without access link uplink, in addition, relay station
Descending backhaul subframe is configured to MB SFN (Multicast Broadcast Single Frequency on access link
Network, multimedia multicast Single Frequency Network) subframe, signaled by existing transmission rule relaying cell user in no other
In the case of access link reception is carried out in preceding 1 or 2 OFDM symbol only in the MBSFN sub-frame, and in the MBSFN sub-frame
Other OFDM symbols on received without access link.
For FDD (Frequency Division Duplexing, FDD) system, descending backhaul subframe pattern by
High level is configured by parameter SubframeConfigurationFDD, and up backhaul subframe pattern is by descending backhaul subframe
Pattern is determined, has 255 kinds of patterns at present, and pair with TDD (TimeDivision Duplexing, time division duplex) system, under
Row and up backhaul subframe pattern are configured by high level by parameter SubframeConfigurationTDD, shared at present
19 kinds of patterns.
When the relay station with locomotive function in moving process away from source base station coverage and progress into target
During the coverage of base station, or, for load balancing or other reasonses, it is necessary to by the own base station of relay station by source base station more
When being changed to target BS, relay station also needs to complete a handoff procedure while service is provided to relaying cell user, breaks
Open the connection with source base station and set up the connection with target BS.In handoff procedure, relay station needs to be advised in target BS
The upper alternating transmission related to target BS progress Stochastic accessing (RACH) of fixed opportunity, and then complete connection foundation.
At present it has been specified that, relay station carry out random access procedure in, can temporarily by backhaul subframe configure hang up, i.e., in
When station is in the alternating transmission related to target BS progress Stochastic accessing, without considering that any backhaul subframe pattern is limited.Cause
This, target BS is the opportunity of the progress random access procedure of relay station defined, is just likely to relay station to relaying cell
Conflict is produced between the opportunity that user carries out access link service, a large amount of waste of radio resources, relaying cell service quality are caused
Reduction, service continuity can not be protected, and user experiences going offline for variation, channel measurement misalignment, or even large area user.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of switching method of relay station, relay station and network node, subtract
Backhaul link transmission and conflicting that access link is transmitted in few relay station handoff procedure.
In order to solve the above technical problems, the invention provides a kind of switching method of relay station, wherein, performed by relay station
Handle below, including：
Relay station receives the handover configurations information from target network node, and the handover configurations information is by objective network
Node is configured according to the backhaul subframe configuration information of the relay station；
The relay station is in handoff procedure, backhaul indicated according to handover configurations information in the handover configurations information
The transmission relevant with switching is carried out on frame or continuous subframes comprising backhaul subframe, at other without the transmission relevant with switching
All or part of subframe on carry out access link transmission.
In order to solve the above technical problems, present invention also offers a kind of switching method of relay station, wherein, by network node
Following processing is performed, including：
Target network node configures the switching of the relay station according to the backhaul subframe configuration information of to be switched relay station
Configuration information；
The target network node sends handover configurations information to the relay station.
In order to solve the above technical problems, present invention also offers a kind of relay station for realizing switching, including receiving module, biography
Defeated module, wherein：
The receiving module, for receiving the handover configurations information from target network node, the handover configurations information
It is to be configured by target network node according to the backhaul subframe configuration information of the relay station；
The transport module, in current relay station handoff procedure, being matched somebody with somebody according to handover configurations information in the switching
The backhaul subframe that confidence breath is indicated carries out the transmission relevant with switching in the continuous subframes comprising backhaul subframe, does not enter at other
Access link transmission is carried out in all or part of subframe of the row transmission relevant with switching.
In order to solve the above technical problems, present invention also offers a kind of network node for realizing relay station switching, including with
Module and sending module are put, wherein：
The configuration module, for when current network node is as target network node, according to be switched relay station
Backhaul subframe configuration information configure the handover configurations information of the relay station；
The sending module, for when current network node is as target network node, sending and cutting to the relay station
Change configuration information.
Using methods described herein, relay station and network node, it can reduce or avoid relay station to be returned in handoff procedure
Conflicting between journey link and access link, waste of radio resources is reduced, improve relaying cell service quality and user's impression, protect
Demonstrate,prove the accuracy of channel measurement, it is to avoid occurrence of large-area user goes offline.
Brief description of the drawings
Fig. 1 is junction network structural representation；
Fig. 2 is the structural representation of network node of the embodiment of the present invention and relay station；
Fig. 3 is that source base station sends relay station backhaul subframe configuration information to target BS schematic diagram；
Fig. 4 is the handover configurations information schematic diagram from target BS that relay station receives source base station forwarding；
Fig. 5 switches over the schematic diagram of associated transport for relaying according to handover configurations information；
Fig. 6 is the relay station switching method in application example 1；
Fig. 7 is the relay station switching method in application example 2；
Fig. 8 is the relay station switching method in application example 3；
Fig. 9 is the relay station switching method in application example 4；
Figure 10 is the relay station switching method in application example 5；
Figure 11 is the relay station switching method in application example 6.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with accompanying drawing to the present invention
Embodiment be described in detail.It should be noted that in the case where not conflicting, in the embodiment and embodiment in the application
Feature can mutually be combined.
Embodiment 1
The present embodiment is mainly described in relay station handoff procedure, the operation that network node is performed, including：
The switching that target network node configures the relay station according to the backhaul subframe configuration information of to be switched relay station is matched somebody with somebody
Confidence ceases；
The target network node sends handover configurations information to the relay station.
In the present embodiment, the backhaul subframe configuration information of the to be switched relay station is as the source net belonging to the relay station
Network node is sent to the target network node.Backhaul subframe configuration information can be sent to by source network node by the following method
Target network node：Backhaul subframe configuration information is carried in following one or more of message and is sent to target network node：
Handover request (HANDOVER REQUEST) message, S1 interface new informations, X2 interface new information.In other embodiments,
The backhaul subframe configuration information of the relay station can also be obtained by target network node by other means, for example objective network section
Point can be sent to the backhaul subframe configuration information of relay station with active sniffing source network node, or be existed according to the demand of operator
Appointed during network design between source network node and target network node relay station backhaul subframe configuration and not against
Signal.The backhaul subframe configuration information includes relay station backhaul subframe pattern configuration information.
The switching that target network node configures the relay station according to the backhaul subframe configuration information of to be switched relay station is matched somebody with somebody
The process of confidence breath is specifically included：Target network node carries out following one or more of configurations according to backhaul subframe configuration information,
Generate the corresponding handover configurations information content：
The PRACH (PhysicalRandom Access Channel, Physical Random Access Channel) of the relay station is provided
Source is configured in up backhaul subframe, or, configure in multiple continuous up sons including at least a up backhaul subframe
On frame；
Configurating downlink it is leading response (preamble response) audit window make wherein at least comprising one descending time
Journey subframe, monitors opportunity configuration by the descending preamble response of the relay station and monitors window in preamble response
Mouthful in descending backhaul subframe on, or, configuration in preamble response audit windows comprise at least one descending time
On multiple continuous descending sub frames of journey subframe；
Configuration conflict solves (Contention Resolution) and monitors timer (such as length and/or starting point position
Put) make to comprise at least a descending backhaul subframe in the timing of the timer, by the Contention of relay station
Resolution monitors opportunity configuration in the descending backhaul subframe during Contention Resolution monitor timer, or
Person, configures and the multiple continuous of descending backhaul subframe is comprised at least in Contention Resolution monitor timer
Descending sub frame on.
According to the first above-mentioned configuration, then the handover configurations information generated includes：Relay station PRACH configuration informations, are used
In instruction PRACH resource locations.According to above-mentioned second configuration, then the handover configurations information generated is rung including relay station preamble
The audit window information answered, is specifically included：Relay station preamble response audit window length information, or also wrap
Include：Relay station preamble response audit window start position information.According to the third above-mentioned configuration, then generate
Handover configurations information include Conflict solving monitor timer information, specifically include：Contention Resolution monitor fixed
When device length information, or：Contention Resolution monitor the length information and origin information of timer.
Contention Resolution monitor timer length information and can be described as Contention Resolution monitoring timings again
The time-out time of device, is admissible maximum time length.
That is, the handover configurations information includes the one or more in following information：Relay station PRACH matches somebody with somebody confidence
Breath, relay station preamble response audit window length information, Contention Resolution monitor timer
Length information.Preferably, the handover configurations information also includes the one or more in following information：Relay station preamble
Response audit window start position information, Contention Resolution monitor the origin information of timer.
When the target network node sends handover configurations information, the handover configurations information is sent to by source network node
The handover configurations information is sent to the affiliated source network node of the relay station, source network node by relay station, i.e. target network node
The handover configurations information is transmitted to relay station.
Above-mentioned source network node can be that base station can also be superordinate relay stations.Similarly, the target network node also may be used
Be base station either superordinate relay stations.
The network node of the above method is realized, as shown in Fig. 2 including configuration module and sending module, wherein：
The configuration module, for when current network node is as target network node, according to be switched relay station
Backhaul subframe configuration information configure the handover configurations information of the relay station；
The sending module, for when current network node is as target network node, sending and cutting to the relay station
Change configuration information.
Preferably, the sending module is additionally operable in source network node of the network node as to be switched relay station,
The backhaul subframe configuration information of the to be switched relay station is sent to the target network node of to be switched relay station.
Preferably, the sending module is for the backhaul subframe of the to be switched relay station to be matched somebody with somebody into confidence in the following ways
Breath is sent to target network node：Backhaul subframe configuration information is carried in following one or more of message and is sent to target network
Network node：Handover request message, S1 interface new informations, X2 interface new information.
Preferably, the backhaul subframe configuration information includes relay station backhaul subframe pattern configuration information.
Preferably, the configuration module is for matching somebody with somebody confidence according to the backhaul subframe of to be switched relay station in the following ways
The handover configurations information of the breath configuration relay station：The configuration module according to backhaul subframe configuration information carry out it is following a kind of or
Several configurations, generate the corresponding handover configurations information content：
By the relay station Physical Random Access Channel (PRACH) resource distribution is in up backhaul subframe or configures
In multiple continuous sub-frame of uplink including at least a up backhaul subframe, the handover configurations information of generation includes relay station
PRACH configuration informations, the relay station PRACH configuration informations are used to indicate PRACH resource locations；
The leading response audit window of configurating downlink makes wherein at least include a descending backhaul subframe, by the relay station
Descending leading response monitoring opportunity configuration is in the descending backhaul subframe in leading response audit window or configures in leading sound
Answer on multiple continuous descending sub frames that a descending backhaul subframe is comprised at least in audit window, the handover configurations information of generation
The audit window information responded including relay station preamble；
Configuration conflict, which solves monitoring timer, to be made to comprise at least descending backhaul in the timing of the timer
Frame, monitors opportunity configuration in the descending backhaul subframe during Conflict solving monitors timer by the Conflict solving of relay station or matches somebody with somebody
Put on the multiple continuous descending sub frames for comprising at least a descending backhaul subframe in Conflict solving monitors timer, generation
Handover configurations information includes Conflict solving and monitors timer information.
Preferably, the sending module is to be used to send handover configurations information to the relay station in the following ways：It is described
The handover configurations information is sent to the affiliated source network node of the relay station by sending module, and the source network node will be described
Handover configurations information is transmitted to the relay station.
Preferably, the network node includes base station or superordinate relay stations.
Embodiment 2
The present embodiment is mainly described in relay station handoff procedure, the operation that relay station is performed, including：
Relay station receives the handover configurations information from target network node, and the handover configurations information is by objective network
Node is configured according to the backhaul subframe configuration information of the relay station；
The relay station in handoff procedure, the backhaul subframe that is indicated according to handover configurations information in the handover configurations information or
The transmission relevant with switching is carried out in continuous subframes comprising backhaul subframe, at other without the complete of the transmission relevant with switching
Access link transmission is carried out in portion or part subframe.
The backhaul subframe configuration information of the relay station at least includes relay station backhaul subframe pattern configuration information.
As described in example 1 above, handover configurations information includes the one or more in following information：Relay station PRACH matches somebody with somebody
Confidence breath, relay station preamble response audit window length information, Contention Resolution monitor fixed
When device length information.Preferably, the handover configurations information also includes the one or more in following information：Relay station
Preamble response audit window start position information, Contention Resolution monitor the starting point of timer
Information.
If handover configurations information includes relay station PRACH configuration informations, relay station is according to handover configurations information at this
The backhaul subframe that handover configurations information is indicated carries out the transmission relevant with switching, bag in the continuous subframes comprising backhaul subframe
Include：Relay station carries out up preamble transmittings in the PRACH resources that handover configurations information is indicated；
If (audit window is long for audit window information of the handover configurations information including relay station preamble response
Spend information, or audit window length information and audit window start position information), then relay station according to handover configurations information at this
The backhaul subframe that handover configurations information is indicated carries out the transmission relevant with switching, bag in the continuous subframes comprising backhaul subframe
Include：The audit window for the preamble response that relay station is indicated in handover configurations information carries out preamble response
Monitoring；
If handover configurations information includes Contention Resolution, monitoring timer information (monitors timer long
Information is spent, or monitors timer length information and monitors the origin information of timer), then relay station exists according to handover configurations information
The backhaul subframe that the handover configurations information is indicated carries out the transmission relevant with switching, bag in the continuous subframes comprising backhaul subframe
Include：Relay station is monitored in timer time in the Contention Resolution that handover configurations information is indicated and carried out
Contention Resolution monitoring.
Above-mentioned relay station carries out access link in other all or part of subframes without the transmission relevant with switching
Transmission, including：Relay station carries out multi-upstream access chain on all or part of sub-frame of uplink without the transmission relevant with switching
Road is transmitted, and/or, relay station is in without the descending access subframe of the transmission relevant with switching and descending backhaul subframe
Descending access link transmission is carried out in preceding 1 or 2 OFDM symbol.
The relay station of the above method is realized, as shown in Fig. 2 including receiving module, transport module, wherein：
The receiving module, for receiving the handover configurations information from target network node, the handover configurations information
It is to be configured by target network node according to the backhaul subframe configuration information of the relay station；
The transport module, in current relay station handoff procedure, being matched somebody with somebody according to handover configurations information in the switching
The backhaul subframe that confidence breath is indicated carries out the transmission relevant with switching in the continuous subframes comprising backhaul subframe, does not enter at other
Access link transmission is carried out in all or part of subframe of the row transmission relevant with switching.
Preferably, the handover configurations information includes relay station Physical Random Access Channel (PRACH) configuration information；It is described
Transport module be backhaul subframe for being indicated in the following ways according to handover configurations information in the handover configurations information or
The transmission relevant with switching is carried out in continuous subframes comprising backhaul subframe：The transport module is indicated in handover configurations information
Up leading transmitting is carried out in PRACH resources.
Preferably, the handover configurations information includes the audit window information that relay station preamble is responded；The transport module
It is backhaul subframe for being indicated in the following ways according to handover configurations information in the handover configurations information or comprising backhaul
The transmission relevant with switching is carried out in the continuous subframes of subframe：The leading response that the transport module is indicated in handover configurations information
Audit window carry out the monitoring of leading response.Preferably, the audit window information of the relay station preamble response includes：Monitor
Length of window information, or audit window length information and audit window start position information.
Preferably, the handover configurations information includes Conflict solving monitoring timer information；The transport module is to be used for
The backhaul subframe that is indicated in the following ways according to handover configurations information in the handover configurations information includes backhaul subframe
The transmission relevant with switching is carried out in continuous subframes：The transport module monitors fixed in the Conflict solving that handover configurations information is indicated
When the device time in carry out Conflict solving monitoring.Preferably, the Conflict solving is monitored timer information and included：Monitor timer
Length information, or monitor timer length information and monitor the origin information of timer.
Preferably, the transport module is in the following ways at other without the complete of the transmission relevant with switching
Access link transmission is carried out in portion or part subframe：The transport module is in the whole without the transmission relevant with switching or portion
Divide and uplink access link transmission is carried out on sub-frame of uplink, and/or, in the descending access subframe without the transmission relevant with switching
And carry out descending access link transmission in preceding 1 or 2 OFDM symbol in descending backhaul subframe.
Embodiment 3
The present embodiment is mainly described in whole relay station handoff procedure, the present embodiment, source network node and objective network section
Point is base station, and handoff procedure includes：
The backhaul subframe configuration information of relay station is sent to target BS by source base station, as shown in Figure 3；
Target BS configures handover configurations information according to backhaul subframe configuration information, and the handover configurations information is passed through into source base
Station is sent to corresponding relay station, and the handover configurations information is used to indicate that relay station carries out the biography relevant with switching in handoff procedure
Defeated time and/or resource, as shown in Figure 4；
Relay station is switched over according to handover configurations information, at the same the time without the transmission relevant with switching and/
Or access link transmission is carried out in resource, as shown in Figure 5.
Various configuration information contents, and concrete operations and relevant device structure in embodiment 1 and embodiment 2 referring to retouching
State.
Handover configurations of the target network node to relay station are illustrated with several applications below.
Using example 1
In a FDD system, the descending backhaul subframe pattern parameter SubframeConfigurationFDD of relay station
Be configured as " 01100101 ", its corresponding up backhaul subframe pattern as shown in fig. 6, descending backhaul subframe pattern parameter with it is upper
The corresponding relation of row backhaul subframe pattern is referring to 3GPP TS 36.216：″Evolved Universal Terrestrial
Radio Access(E-UTRA)；Physical layer for relaying operation″.
Source base station is first sent the backhaul subframe pattern configuration information of relay station by HANDOVER REQUEST information
To target BS, target BS according to relay station backhaul subframe pattern after allowing switching it is determined that switch over configuration.
Target BS only configures up PRACH resources in up backhaul subframe, and target BS configures PRACH
Parameter PRACH Configuration Index are configured to " 2 ", i.e. will in satisfaction by the up transmitting starting point configurations of preamble
In the subframe 7 for each even number radio frames asked, preamble uses form 0, and PRACH is resource continuous have been launched to preamble
Into then PRACH resource distributions situation is as shown in fig. 6, in figureUp backhaul subframe is represented,Represent PRACH resources.Target
Base station sends PRACH configuration informations to source base station, and is forwarded to relay station by source base station.
Relay station proceeds by preamble according to received PRACH configuration informations from the subframe 7 of radio frames 2
Up transmitting, it is 1 subframe that preamble emission process, which continued to the subframe 7 of radio frames 2, i.e. duration, and the subframe 7 is upper
Row backhaul subframe, meanwhile, relay station carries out the transmission of access link on other sub-frame of uplink.
Using example 2
In a FDD system, the descending backhaul subframe pattern parameter SubframeConfigurationFDD of relay station
" 11001010 " are configured as, its corresponding sub-frame of uplink pattern is as shown in Figure 7.
Source base station is first sent the backhaul subframe pattern configuration information of relay station to target by X2 interface fresh information
Base station, and target BS according to relay station backhaul subframe pattern after allowing switching it is determined that switch over configuration.
Target BS by PRACH resource distributions on the continuous sub-frame of uplink comprising up backhaul subframe, and target base
Stand and be configured to PRACH configuration parameter PRACH Configuration Index " 54 ", i.e. launch preamble is up
Point configuration is in the subframe 1 and 6 for meeting desired each radio frames, and preamble uses form 3, and PRACH is resource continuous extremely
Preamble transmittings are completed, then PRACH resource distributions situation is as shown in Figure 7.Target BS sends PRACH configuration informations to source
Base station, and relay station is forwarded to by source base station.
Relay station, based on loss reduction principle, selects the son from radio frames 3 according to received PRACH configuration informations
The up transmittings of preamble are proceeded by frame 6, are continued to the sub-frame of uplink 8 of radio frames 3, wherein subframe 6 and 7 is up backhaul
Subframe, meanwhile, relay station keeps the transmission of uplink access link in other multi-upstream access subframes.
Using example 3
In a TDD system, the descending backhaul subframe pattern parameter SubframeConfigurationTDD of relay station
" 9 " are configured as, its corresponding descending backhaul subframe pattern is as shown in Figure 8.In the present example it is assumed that relay station is in radio frames 0
Subframe 2 on carry out preamble transmittings.
Source base station is first sent the backhaul subframe pattern configuration information of relay station to target by X2 interface fresh information
Base station, and target BS according to the descending backhaul subframe pattern of relay station after allowing switching it is determined that switch over configuration.
Preamble response are monitored opportunity configuration in the descending backhaul subframe in audit window by target BS,
And preamble response audit window length parameters ra-ResponseWindowSize is configured to by target BS
The subframe lengths of " sf10 ", i.e., 10, audit window start position be defaulted as preamble transmitting complete 3 subframes after, i.e., without
Subframe 5 in line frame 0, then preamble response monitorings opportunity configuration is as shown in Figure 8.Target BS is by preamble
Response audit window length configuration informations are sent to source base station, and are forwarded to relay station by source base station.
Relay station is only monitoring window according to received preamble response audit window length configuration informations
The subframe 8 of preamble response monitorings, i.e. radio frames 0 and the subframe of radio frames 1 are carried out in descending backhaul subframe in mouthful
3 and 4, also, relay station holding in preceding 1 or 2 OFDM symbol in other descending access subframes and in descending backhaul subframe
The transmission of descending access link.
Using example 4
In a FDD system, the descending backhaul subframe pattern parameter SubframeConfigurationFDD of relay station
" 11101110 " are configured as, its corresponding descending sub frame pattern is as shown in Figure 9.
Source base station is first sent the backhaul subframe pattern configuration information of relay station by HANDOVER REQUEST information
To target BS, and target BS is switched over according to the descending backhaul subframe pattern of relay station after it is determined that allowing switching and matched somebody with somebody
Put.
Preamble response monitoring opportunity configurations are included descending backhaul subframe by target BS in audit window
Continuous descending sub frame on, and target BS is by preamble response audit window length parameters ra-
ResponseWindowSize is configured to " sf7 ", i.e., 7 subframe lengths, audit window start position is configured to the son of radio frames 1
Frame 2, then preamble response monitorings opportunity configuration is as shown in Figure 9.Target BS monitors preamble response
Length of window and starting point configuration information are sent to source base station, and are forwarded to relay station by source base station.
Relay station is according to received preamble response audit windows length and starting point configuration information, in prison
Listen progress preamble response monitorings, i.e. radio frames 1 on the continuous descending sub frame comprising descending backhaul subframe in window
Subframe 2 arrive subframe 8, also, relay station preceding 1 or 2 OFDM in other descending access subframes and descending backhaul subframe is accorded with
The transmission of descending access link is kept on number.
Using example 5
In a FDD system, the descending backhaul subframe pattern parameter SubframeConfigurationFDD of relay station
" 11101110 " are configured as, its corresponding descending sub frame pattern is as shown in Figure 10.
Source base station is first sent the backhaul subframe pattern configuration information of relay station by HANDOVER REQUEST information
To target BS, and target BS is switched over according to the descending backhaul subframe pattern of relay station after it is determined that allowing switching and matched somebody with somebody
Put.
Contention Resolution are monitored opportunity configuration and supervised in Contention Resolution by target BS
Listen timer start until stop or the descending backhaul subframe of time-out period on, and target BS is by Contention
Resolution monitors timer length parameter mac-ContentionResolutionTimer and is configured to " sf8 ", i.e., 8 sons
Frame length, monitors the subframe 6 that timer start position is configured to radio frames 1, then Contention Resolution monitor opportunity
Configuration is as shown in Figure 10.Contention Resolution are monitored target BS into timer length and starting point configuration information is sent out
Source base station is delivered to, and relay station is forwarded to by source base station.
Relay station monitors timer length according to received Contention Resolution and starting point matches somebody with somebody confidence
Breath, carries out Contention Resolution monitorings, i.e. radio frames 1 in the descending backhaul subframe monitored in timer time
Subframe 6 to 8 and radio frames 2 subframe 1 to 2, also, relay station carries out descending access link on other descending sub frames
Transmission.
Using example 6
In a FDD system, the descending backhaul subframe pattern parameter SubframeConfigurationFDD of relay station
" 11101110 " are configured as, its corresponding descending sub frame pattern is as shown in figure 11.
Source base station is first sent the backhaul subframe pattern configuration information of relay station to target by S1 interface fresh informations
Base station, and target BS according to the descending backhaul subframe pattern of relay station after allowing switching it is determined that switch over configuration.
Contention Resolution are monitored opportunity configuration and supervised in Contention Resolution by target BS
Listen timer start until stop or the continuous descending sub frame comprising descending backhaul subframe of time-out period on, and target BS
Contention Resolution monitorings timer length parameter mac-ContentionResolutionTimer is configured to
The subframe lengths of " sf8 ", i.e., 8, monitor timer start position and are defaulted as under adjacent after up preamble transmitting is completed
The subframe 1 of row subframe, i.e. radio frames 1, then Contention Resolution monitorings opportunity configuration is as shown in figure 11.Target base
Stand and send Contention Resolution monitoring timer length configuration informations to source base station, and be forwarded to by source base station
Relay station.
Relay station monitors timer length configuration information according to received Contention Resolution, in prison
Progress Contention Resolution monitorings on the descending sub frame comprising descending backhaul subframe in timer time are listened, i.e.,
The subframe 1 to 9 of radio frames 1, also, relay station preceding 1 or 2 OFDM in other descending access subframes and descending backhaul subframe
The transmission of descending access link is kept on symbol.
One of ordinary skill in the art will appreciate that all or part of step in the above method can be instructed by program
Related hardware is completed, and described program can be stored in computer-readable recording medium, such as read-only storage, disk or CD
Deng.Alternatively, all or part of step of above-described embodiment can also use one or more integrated circuits to realize.Accordingly
Each module/unit in ground, above-described embodiment can be realized in the form of hardware, it would however also be possible to employ the shape of software function module
Formula is realized.The present invention is not restricted to the combination of the hardware and software of any particular form.
Certainly, the present invention can also have other various embodiments, ripe in the case of without departing substantially from spirit of the invention and its essence
Various corresponding changes and deformation, but these corresponding changes and change ought can be made according to the present invention by knowing those skilled in the art
Shape should all belong to the protection domain of appended claims of the invention.
Claims (27)
1. a kind of switching method of relay station, wherein, following processing is performed by relay station, including：
Relay station receives the handover configurations information from target network node, and the handover configurations information is by target network node
Configured according to the backhaul subframe configuration information of the relay station；
The relay station in handoff procedure, the backhaul subframe that is indicated according to handover configurations information in the handover configurations information or
The transmission relevant with switching is carried out in continuous subframes comprising backhaul subframe, at other without the complete of the transmission relevant with switching
Access link transmission is carried out in portion or part subframe；
The handover configurations information includes the audit window information that relay station preamble is responded；
Backhaul subframe or include backhaul subframe that the relay station is indicated according to handover configurations information in the handover configurations information
Continuous subframes on carry out the transmission relevant with switching, including：The prison for the leading response that relay station is indicated in handover configurations information
Window is listened to carry out the monitoring of leading response.
2. the method as described in claim 1, it is characterised in that：
The backhaul subframe configuration information of the relay station includes relay station backhaul subframe pattern configuration information.
3. the method as described in claim 1, it is characterised in that：
The handover configurations information includes relay station Physical Random Access Channel PRACH configuration informations；
Backhaul subframe or include backhaul subframe that the relay station is indicated according to handover configurations information in the handover configurations information
Continuous subframes on carry out the transmission relevant with switching, including：The PRACH resources that the relay station is indicated in handover configurations information
It is upper to carry out up leading transmitting.
4. the method as described in claim 1, it is characterised in that：
The audit window information of the relay station preamble response includes：Audit window length information, or audit window length information
With audit window start position information.
5. the method as described in claim 1, it is characterised in that：
The handover configurations information includes Conflict solving and monitors timer information；
Backhaul subframe or include backhaul subframe that the relay station is indicated according to handover configurations information in the handover configurations information
Continuous subframes on carry out the transmission relevant with switching, including：Relay station is monitored in the Conflict solving that handover configurations information is indicated
The monitoring of Conflict solving is carried out in timer time.
6. method as claimed in claim 5, it is characterised in that：
The Conflict solving, which monitors timer information, to be included：Monitor timer length information, or monitor timer length information and
Monitor the origin information of timer.
7. the method as described in claim 1, it is characterised in that：
The relay station carries out access link transmission in other all or part of subframes without the transmission relevant with switching,
Including：
Relay station carries out uplink access link transmission on all or part of sub-frame of uplink without the transmission relevant with switching,
And/or, relay station in without the descending access subframe of the transmission relevant with switching and descending backhaul subframe before 1 or 2
Descending access link transmission is carried out in individual OFDM symbol.
8. a kind of switching method of relay station, wherein, following processing is performed by network node, including：
Target network node configures the handover configurations of the relay station according to the backhaul subframe configuration information of to be switched relay station
Information；
The target network node sends handover configurations information to the relay station；
The handover configurations information includes the audit window information that relay station preamble is responded；
Backhaul subframe or include backhaul subframe that the relay station is indicated according to handover configurations information in the handover configurations information
Continuous subframes on carry out the transmission relevant with switching, including：The prison for the leading response that relay station is indicated in handover configurations information
Window is listened to carry out the monitoring of leading response.
9. method as claimed in claim 8, it is characterised in that：
The backhaul subframe configuration information of the to be switched relay station is sent to as the source network node belonging to the relay station
The target network node.
10. method as claimed in claim 9, it is characterised in that：
Backhaul subframe configuration information is sent to target network node by source network node by the following method：
Backhaul subframe configuration information is carried in following one or more of message and is sent to target network node：Handover request disappears
Breath, S1 interface new informations, X2 interface new information.
11. the method as described in claim 8 or 9 or 10, it is characterised in that：
The backhaul subframe configuration information includes relay station backhaul subframe pattern configuration information.
12. method as claimed in claim 8, it is characterised in that：
Target network node configures the handover configurations of the relay station according to the backhaul subframe configuration information of to be switched relay station
Information, including：
Target network node carries out following one or more of configurations according to backhaul subframe configuration information, generates corresponding handover configurations
The information content：
By the Physical Random Access Channel PRACH resource distributions of the relay station in up backhaul subframe or configure at least
On multiple continuous sub-frame of uplink comprising a up backhaul subframe, the handover configurations information of generation includes relay station PRACH
Configuration information, the relay station PRACH configuration informations are used to indicate PRACH resource locations；
The leading response audit window of configurating downlink makes wherein at least include a descending backhaul subframe, by the descending of the relay station
Leading response monitoring opportunity configuration is in the descending backhaul subframe in leading response audit window or configures in leading response prison
Listen on multiple continuous descending sub frames that a descending backhaul subframe is comprised at least in window, the handover configurations information of generation includes
The audit window information of relay station preamble response；
Configuration conflict, which solves monitoring timer, to be made to comprise at least a descending backhaul subframe in the timing of the timer, will
The Conflict solving of relay station is monitored opportunity configuration in the descending backhaul subframe during Conflict solving monitors timer or configured
Conflict solving is monitored on multiple continuous descending sub frames that a descending backhaul subframe is comprised at least in timer, the switching of generation
Configuration information includes Conflict solving and monitors timer information.
13. method as claimed in claim 8, it is characterised in that：
The target network node sends handover configurations information to the relay station, including：Target network node is by the switching
Configuration information is sent to the affiliated source network node of the relay station, and the handover configurations information is transmitted to by the source network node
The relay station.
14. method as claimed in claim 9, it is characterised in that：
The source network node includes base station or superordinate relay stations；The target network node includes base station or superordinate relay stations.
15. a kind of relay station for realizing switching, including receiving module, transport module, wherein：
The receiving module, for receiving the handover configurations information from target network node, the handover configurations information be by
Target network node is configured according to the backhaul subframe configuration information of the relay station；
The transport module, in current relay station handoff procedure, being believed according to handover configurations information in the handover configurations
Cease and the transmission relevant with switching carried out in the backhaul subframe indicated or continuous subframes comprising backhaul subframe, other without with
Access link transmission is carried out in all or part of subframe of the relevant transmission of switching；
The handover configurations information includes the audit window information that relay station preamble is responded；
The transport module is in the following ways according to handover configurations information in returning that the handover configurations information is indicated
The transmission relevant with switching is carried out in journey subframe or continuous subframes comprising backhaul subframe：The transport module is believed in handover configurations
The audit window for ceasing the leading response indicated carries out the monitoring of leading response.
16. relay station as claimed in claim 15, it is characterised in that：
The handover configurations information includes relay station Physical Random Access Channel PRACH configuration informations；
The transport module is in the following ways according to handover configurations information in returning that the handover configurations information is indicated
The transmission relevant with switching is carried out in journey subframe or continuous subframes comprising backhaul subframe：The transport module is believed in handover configurations
Cease and carry out up leading transmitting in the PRACH resources indicated.
17. relay station as claimed in claim 15, it is characterised in that：
The audit window information of the relay station preamble response includes：Audit window length information, or audit window length information
With audit window start position information.
18. relay station as claimed in claim 15, it is characterised in that：
The handover configurations information includes Conflict solving and monitors timer information；
The transport module is in the following ways according to handover configurations information in returning that the handover configurations information is indicated
The transmission relevant with switching is carried out in journey subframe or continuous subframes comprising backhaul subframe：The transport module is believed in handover configurations
The Conflict solving that breath is indicated monitors the monitoring that Conflict solving is carried out in timer time.
19. relay station as claimed in claim 18, it is characterised in that：
The Conflict solving, which monitors timer information, to be included：Monitor timer length information, or monitor timer length information and
Monitor the origin information of timer.
20. relay station as claimed in claim 15, it is characterised in that：
The transport module is in the following ways in other all or part of sons without the transmission relevant with switching
Access link transmission is carried out on frame：
The transport module carries out multi-upstream access chain on all or part of sub-frame of uplink without the transmission relevant with switching
Road transmit, and/or, in without the descending access subframe of the transmission relevant with switching and descending backhaul subframe before 1 or 2
Descending access link transmission is carried out in individual OFDM symbol.
21. a kind of network node for realizing relay station switching, including configuration module and sending module, wherein：
The configuration module, for when current network node is as target network node, according to returning for be switched relay station
Journey subframe configuration information configures the handover configurations information of the relay station；
The sending module, for when current network node is as target network node, sending switching to the relay station and matching somebody with somebody
Confidence ceases；
The handover configurations information includes the audit window information that relay station preamble is responded；
Backhaul subframe or include backhaul subframe that the relay station is indicated according to handover configurations information in the handover configurations information
Continuous subframes on carry out the transmission relevant with switching, including：The prison for the leading response that relay station is indicated in handover configurations information
Window is listened to carry out the monitoring of leading response.
22. network node as claimed in claim 21, it is characterised in that：
The sending module, is additionally operable to, in source network node of the network node as to be switched relay station, treat described
The backhaul subframe configuration information of switching relay station is sent to the target network node of to be switched relay station.
23. network node as claimed in claim 22, it is characterised in that：
The sending module is for being in the following ways sent to the backhaul subframe configuration information of the to be switched relay station
Target network node：
Backhaul subframe configuration information is carried in following one or more of message and is sent to target network node：Handover request disappears
Breath, S1 interface new informations, X2 interface new information.
24. the network node as described in claim 21 or 22 or 23, it is characterised in that：
The backhaul subframe configuration information includes relay station backhaul subframe pattern configuration information.
25. network node as claimed in claim 22, it is characterised in that：
The configuration module is for configuring institute according to the backhaul subframe configuration information of to be switched relay station in the following ways
State the handover configurations information of relay station：
The configuration module carries out following one or more of configurations according to backhaul subframe configuration information, generates corresponding handover configurations
The information content：
By the Physical Random Access Channel PRACH resource distributions of the relay station in up backhaul subframe or configure at least
On multiple continuous sub-frame of uplink comprising a up backhaul subframe, the handover configurations information of generation includes relay station PRACH
Configuration information, the relay station PRACH configuration informations are used to indicate PRACH resource locations；
The leading response audit window of configurating downlink makes wherein at least include a descending backhaul subframe, by the descending of the relay station
Leading response monitoring opportunity configuration is in the descending backhaul subframe in leading response audit window or configures in leading response prison
Listen on multiple continuous descending sub frames that a descending backhaul subframe is comprised at least in window, the handover configurations information of generation includes
The audit window information of relay station preamble response；
Configuration conflict, which solves monitoring timer, to be made to comprise at least a descending backhaul subframe in the timing of the timer, will
The Conflict solving of relay station is monitored opportunity configuration in the descending backhaul subframe during Conflict solving monitors timer or configured
Conflict solving is monitored on multiple continuous descending sub frames that a descending backhaul subframe is comprised at least in timer, the switching of generation
Configuration information includes Conflict solving and monitors timer information.
26. network node as claimed in claim 21, it is characterised in that：
The sending module is to be used to send handover configurations information to the relay station in the following ways：
The handover configurations information is sent to the affiliated source network node of the relay station, the source network section by the sending module
The handover configurations information is transmitted to the relay station by point.
27. network node as claimed in claim 21, it is characterised in that：
The network node includes base station or superordinate relay stations.
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| CN104105148A (en) * | 2013-04-07 | 2014-10-15 | 电信科学技术研究院 | Cell switching method and equipment |
| CN109392031B (en) * | 2017-08-04 | 2020-08-28 | 北京佰才邦技术有限公司 | Cell switching method, terminal equipment and original base station |
| CN110831066B (en) | 2018-08-10 | 2022-08-30 | 中国移动通信有限公司研究院 | Resource processing method and equipment |
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| WO2011019972A1 (en) * | 2009-08-12 | 2011-02-17 | Qualcomm Incorporated | Method and apparatus for relay backhaul design in a wireless communication system |
| WO2011019973A2 (en) * | 2009-08-12 | 2011-02-17 | Qualcomm Incorporated | Method and apparatus for relay backhaul design in a wireless communication system |
| CN102045863A (en) * | 2009-10-12 | 2011-05-04 | 中兴通讯股份有限公司 | Method and system for implementing random access in relay station |
| CN102076041A (en) * | 2011-01-30 | 2011-05-25 | 大唐移动通信设备有限公司 | Resource allocation method and device |
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|---|---|---|---|---|
| WO2011019972A1 (en) * | 2009-08-12 | 2011-02-17 | Qualcomm Incorporated | Method and apparatus for relay backhaul design in a wireless communication system |
| WO2011019973A2 (en) * | 2009-08-12 | 2011-02-17 | Qualcomm Incorporated | Method and apparatus for relay backhaul design in a wireless communication system |
| CN102045863A (en) * | 2009-10-12 | 2011-05-04 | 中兴通讯股份有限公司 | Method and system for implementing random access in relay station |
| CN102076041A (en) * | 2011-01-30 | 2011-05-25 | 大唐移动通信设备有限公司 | Resource allocation method and device |
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