CN101507144A - Radio resource management in multihop relay networks - Google Patents

Radio resource management in multihop relay networks Download PDF

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Publication number
CN101507144A
CN101507144A CN200780030595.3A CN200780030595A CN101507144A CN 101507144 A CN101507144 A CN 101507144A CN 200780030595 A CN200780030595 A CN 200780030595A CN 101507144 A CN101507144 A CN 101507144A
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node
section point
relaying section
radio resource
control parameter
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CN200780030595.3A
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CN101507144B (en
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朱晨曦
陈伟鹏
乔纳森·阿格雷
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Fujitsu Ltd
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Fujitsu Ltd
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Priority claimed from PCT/US2007/074850 external-priority patent/WO2008021721A2/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603—Arrangements for wireless physical layer control
    • H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations

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Abstract

The embodiments provide transmitting at same time first and relay second node preambles aligning data frames among the first node and the relay second node wirelessly communicating in a channel and transmitting by the first node one or more radio resource control parameters managing radio resources of the wireless communicating in the channel among the aligned first node and the relay second node. A relay resynchronization amble sequence managing synchronizing in the channel the first node frames with the relay second node frames is periodically transmitted to the relay second node.

Description

Wireless data frame structure between the node
Reference to related application
The application relates to and requires the applying date is that August 18, application number in 2006 are 60/822,861, the application people be ChenxiZhu, Wei-PengChen and JonathanAgre and the priority that is called the U.S. Provisional Patent Application of ＂ wireless network management (MANAGING A WIRELESS NETWORK) ＂, and relate to and require to submit on August 18th, 2006, sequence number is 60/822,791 U.S. Provisional Application No., and require to submit on July 31st, 2007, sequence number is the priority of U.S.'s non-provisional application of 11/831,108.
Technical field
Disclosed execution mode relates to radio communication device/network frame structure in the literary composition.
Background technology
In wireless cellular network, the user who is in the sub-district diverse location experiences different signal qualitys usually, and therefore experiences service quality (QoS) in various degree.This is because user's channel quality depends on multiple factor, comprises path loss, shielding and interference.The user who is positioned at cell edge often is subjected to from the strong jamming of neighbor cell and observes lower dried the making an uproar than (CINR) of carrying.In urban environment, big building has caused serious obstruction to the user who is in its back, produces coverage hole sometimes.The signal of building or tunnel internal penetrates and decays and also seriously reduced signal quality.Usually can't improve the signal quality of these being served not enough zone by improving transmitting power or changing antenna structure.This situation will be improved in the size and the more base station of configuration that reduce the sub-district, but owing to access restriction and the corresponding high operating cost to traditional cell site and wired back haul link makes this scheme normally impossible.
Summary of the invention
The one side of the execution mode of discussing in the literary composition is the Radio Resource Control Parameter of specifying the Radio Resource of the radio communication in the management individual channel between frame structure alignment or synchronous first node and relaying Section Point to the three nodes, and periodically with relaying more synchronously code-guiding sequence be sent to the relaying Section Point, this relaying is aliging in the individual channel of the first segment of code-guiding sequence management synchronously point frame and relaying Section Point frame again.Execution mode is not restricted to individual channel, but according to the aspect of execution mode, these specified the Radio Resource Control Parameter for it and by the relaying node that code-guiding sequence is safeguarded the arrangement of frame structure synchronously again between can have a plurality of channels.
One side according to execution mode, radio communication is to carry out in the MMR sub-district that comprises single base station (BS), radio communication is carried out by one or more a plurality of relay station (RS) and one or more a plurality of mobile radio station in the base station, and execution mode provides the better beneficial effect of coverage of the cell area of the higher and single BS service of cell capacity.According to another execution mode, network comprises many BS and many RS, and wherein all BS and RS are synchronous in its frame structure.Another kind of beneficial effect is to have formed in the cell area that a kind of single BS in individual channel covers to set the method for RS, and makes that the operation of RS there is no different with the operation of BS from the angle of MS.
With reference to having formed the accompanying drawing of a specification part, from hereinafter illustrate the details with claimed structure and operation more comprehensively, can understand above aspect and advantage with other, wherein like numerals will refers to like in institute's drawings attached.
Description of drawings
Fig. 1 is the topological diagram according to the MMR sub-district of execution mode.
Fig. 2 is unjustified up link in the MMR sub-district and the tdd frame structure chart in the downlink communication.
The flow chart of Fig. 3 between wireless communication node, distributing according to a kind of amount of radio resources of execution mode with in the individual channel.
Fig. 4 is the structure chart according to up link in a kind of MMR sub-district of execution mode and the tdd frame in the downlink communication.
Fig. 5 is according to the control messages of up link in a kind of use MR sub-district of execution mode and the tdd frame structure in the downlink communication and the temporal correlation figure of data flow.
Fig. 6 be according to a kind of execution mode at the functional-block diagram that uses the equipment of radio communication frame structure between the node of individual channel.
Fig. 7 is the functional-block diagram according to the processing layer in a kind of Fig. 6 equipment of execution mode (software and/or computing hardware).
Embodiment
Execution mode with between radio communication device (wireless device/node), share relevantly as the same frequency spectrum or the same frequency band (channel) of radio resource, these radio communication devices are according to one in TDD and/or the FDD system or more a plurality of with individual channel radio communication each other.According to the aspect of execution mode, the wireless communication data frame structure provides relaying in the number tape of information between first device installs with one or the more a plurality of the 3rd by relaying second device.But according to the employing wireless communication network connecting system (MAC/ physical layer system) in the access to wireless communication network, Radio Resource refers to wireless communication bandwidth.Bandwidth can comprise sub-carriers/subchannels (if any), symbol, time slot, transmitting power, frequency or a part wherein or its combination in any.Be meant in the band between first equipment and relaying second equipment cascade wireless communication link between one or more the 3rd equipment, use similar frequency bands and do not need the individual channel of other frequency range.According to an aspect of execution mode, any equipment of combine digital baseband functions and radio transmitting/receiving function between two equipment (that is, carrying out appropriate signals/data processing) can be trunking.According to an aspect of execution mode, first node is via non-one or more the 3rd node of directly controlling of relaying Section Point.
Execution mode can be contained in any cordless communication network that uses the time-division multiplex (MUX) in medium access control (MAC) and/or physical layer.For example, these execution modes are not limited to but can be included in, in any broadband wireless access standard such as (being not limited to) IEEE802.16 standard (be also referred to as global inserting of microwave and can operate (WIMAX) network mutually), stipulated in MAC and/or physical layer that wherein various cordless communication networks insert the combination of standard and/or these standards, wherein these cordless communication networks insert standard based on time division multiplexing (TDD) system that adopts (being not limited to) time division multiple access (TDMA), code division multiple access (CDMA) system, the combination of frequency division multiple access (FDMA) and/or OFDM (FDMA) or above scheme.
In the WiMAX wireless cellular network, using radio relay is the effective ways that improve the subscriber signal quality, it replaces to a plurality of short high quality links via one or more relay station (RS) with long between base station (BS) and the travelling carriage/subscriber board (MS/SS) (after this being called MS) and low-quality communication link.Because relay station does not need its oneself wired backhaul, and it does not have global function BS complexity usually, thus the layout of relay station compare traditional BS with operation more cheap.The service that relay station can be expanded BS to be covering the blind area that the user originally can't obtain to serve, and expanded the efficient cell size of BS.Relay station can also be used for improving that carrying of user is dried makes an uproar than (CINR) and service quality (QoS) and improve cell capacity.
Relaying technique can be according to the IEEE802.16 standard that is included in the 802.16j relaying working group.In the IEEE802.16 standard, relay station communicates as MS and BS, and (is called the RS microcellulor) as BS in its overlay area and communicates with MS.Whole service coverage areas of BS and all corresponding RS can be known as based on mobile multi-hop relaying sub-district (MMR sub-district or MMR network).3 types relay station is arranged: fixedly RS, nomadic RS and mobile RS.Preceding two types RS for good and all or with the time more much longer than common user conversation is fixed on certain position.Usually mobile RS is installed on the moving vehicle and to those MS in the vehicle service is provided.Execution mode relates to all types of RS.
Execution mode is applied in the following cordless communication network, this is wireless all communication network have 3 or more a plurality of node that communicates with wireless mode of shared single frequency.In an illustrative embodiments, Fig. 1 is the topological diagram with MMR sub-district 100 of BS 102 and two relay stations (RS1 and RS2) 104a, 104b.BS 102 directly serves MS BSMS in the group 1～6106a～f (MS 1106a and MS 2106b).Two relay station (RS 1104a, RS 2104b) be used for expanding covering and the service MS of BS 102 RS1(MS 3106c and MS 4106d) and MS RS2(MS 5106e and MS 6106f) the MS in the group 3～6106C～f.MMR sub-district 100 comprises the communication coverage area of BS 102 and all RS 104.Repeated link 110 is meant between BS and the RS or main RS and it is from the single communication link (uplink/downlink) between the RS.MS access link 112 is meant the single communication link (uplink/downlink) that relates to MS 106, for example between RS and the MS or the single communication link between BS and the MS.RS microcellulor 108 refers to the communication coverage area (uplink/downlink) of the MS 106 that BS 102, single RS 104 and this single RS 104 of quilt directly serve.Uplink communication refers to from MS to RS to the communication of BS or MS directly to the communication of BS again, downlink communication be meant from BS to RS again the communication of MS or from BS directly to the communication of RS.
How frame structure decision BS 102 in the MMR sub-district 100 and RS 104 share Radio Resource.This is most important for MS 106 provides the ability of QoS for MMR sub-district 100.Because RS 104 provides relay function between BS 102 and MS 106 (and other possible RS 104), so RS 104 can communicate as MS 106 and BS 102, and can communicate as BS 102 and MS 106.If RS 104 only has single wave point, then RS 104 must be at it BS ↔ RS Interface and RS ↔ MS Switch its electric wave between the interface.Therefore need BS ↔ RS With RS ↔ MS Between communication time-domain multiplexed.
Fig. 2 is non-alignment up link in the MMR sub-district and the tdd frame structure chart in the downlink communication.In Fig. 2, BS 102 and RS 104 transmit lead code at different time.All transmit window: BS → RS, RS → MS RS, RS → BS and MS RS→ RS has fixed duration, and can't adjust based on the flow in the RS Microcell 108.More specifically, MMR sub-district 100, BS 102 periodically transmit conventional preamble sequence 202 in the beginning of each frame.This lead code 202 has defined the beginning of tdd frame for whole M MR sub-district 100.Lead code 202 is used by MS 106, so as to network position and realization and BS 102 between synchronous.In order to provide service to those MS 106 that can't directly receive from BS 102, RS 104 need be these MS 106 services as conventional BS 102, is included in and transmits lead code 202 (203) in each frame.The lead code 202 that RS 104 transmits defines time relationship between BS frame 204 and the RS frame 206 with respect to the position of BS lead code 202.Such as, the position of lead code 202 can determine that the downlink subframe 206 of RS 104 to what extent can be used for transmitting to its MS 106 by RS 104, and the uplink sub-frames 208 of RS 104 to what extent can be used for transmitting to RS 104 by these MS 106.Because MS 106 is in fixed position expectation lead code 202, so RS 104 can't arbitrarily change its frame.Thereby causing can be used for immobilizes for the MS in the RS Microcell 108 104 provides the amount of radio resources of service, just transmits window BS → RS, RS → MS RS, RS → BS, MS RS→ RS immobilizes, and the transmission window in the individual channel between BS, RS and MS can't be based on the traffic requirement adjustment in the RS Microcell 108.This may limit and support dynamic flexibility in MMR sub-district 100.This also may force MS that its frame is arranged when the coverage area of BS moves to the coverage area of RS at MS to change.Have in some networks of frame sequential of alignment at all BS, this is unfavorable, because its needs may cause service disruption in longer MS search time and the handoff procedure between BS and RS.
According to the one side of execution mode, cordless communication network is MMR sub-district 100, and first device is for BS 102, and relaying second device is RS 104, and the 3rd device is MS 106 (such as radio telephone, wireless personal digital assistant, wireless media player).Execution mode provides frame structure between first device that uses the individual channel radio communication and relaying second install one or more a plurality of the 3rd device, this frame structure is specified/defined and safeguards that when first device transmits and/or when relaying second device plans (communication schedule) to the communication (transmissions/reception) that the 3rd device transmits to relaying second device.In an illustrative embodiments, between first device and relaying second device and relaying second installs that signal plan in the 3rd the individual channel between installing is alignd and dynamically (in real time) keep and align.According to another kind of execution mode, dynamically signal plan is adjusted from alignment according to application standard.
The flow chart of Fig. 3 for the amount of radio resources in the individual channel between wireless communication node being adjusted according to a kind of execution mode.In operation 302, between the first node to that carries out trunking traffic in the number tape by the relaying Section Point or more a plurality of the 3rd node, begin synchronizing network.Such as, first node transmits start frame and leads sign indicating number (lead code), and the relaying Section Point is sent to three node (such as subscriber station) at synchronization with lead code at individual channel (in the band).Network when synchronizing network refers to align all down links that first and relaying Section Point in the individual channel transmit and uplink frame by the lead code of lead code that transmits first node in identical time and relaying Section Point.According to the one side of execution mode, the relaying Section Point is configured to have the function of relay station.According to the one side of execution mode, the data frame alignment between first node control or coordination and the relaying Section Point.In an illustrative embodiments, in MMR sub-district 100, first node is BS 102, and the relaying Section Point is RS 104, and the 3rd node is MS 106.
In operation 304, (in real time) specific radio resource control parameters between synchronous first node and relaying Section Point and the 3rd node dynamically, the Radio Resource of the interior radio communication of this Radio Resource Control Parameter management individual channel.According to the one side of execution mode, for further managing radio resources, comprise relay synchronization, repetitive operation at any time 302.RRM refer to Radio Resource and/or use the radio communication of Radio Resource communication, distribution (distribution/division), initialization/configuration, dispose again, adjust, safeguard, test/control of carrying out such as simulate.
In operation 306, first node periodically with relaying more synchronously code-guiding sequence be sent to the relaying Section Point, relaying is synchronous between first segment point frame and the relaying Section Point frame in the individual channel of code-guiding sequence management synchronously again.According to the one side of execution mode, all places (just any position from beginning to ending) of the synchronous again code-guiding sequence of relaying in downlink communication chain circuit-switched data frame can be sent to relay station.The synchronous again code-guiding sequence (the synchronous code-guiding sequence of intermediate relay) of relaying refers to any code-guiding sequence except start frame is led sign indicating number (lead code), this code-guiding sequence carries out synchronous again to first node and relaying Section Point, and can be sent to relay station in all places in the downlink communication chain circuit-switched data frame (any position from the beginning to ending just).Such as, relaying more synchronously code-guiding sequence can be in the middle of near the communication link subframe place as intermediate code or the ending of communication link subframe or near ending place as after lead sign indicating number or be transmitted as its any combination.One side according to execution mode, require the relevant provisional application 60/822 of its priority such as the application, 861 relevantly hang formal patent application 11/830 altogether with application people as the application basis is that ChenxiZhu, Wei-PengChen and JonathanAgre and name are called ＂ NEW AND LEGACY WIRELESSCOMMUNICATION DEVICE COEXISTING AMBLE SEQUENCE ＂, 929 have described a kind of method that makes up and broadcast the relay synchronization code-guiding sequence, and its content is incorporated into this by reference.
Fig. 4 is according to up link in a kind of MMR sub-district of execution mode and the tdd frame structure chart in the downlink communication.Yet execution mode is not limited to the MMR sub-district, but can offer any cordless communication network.In Fig. 4, execution mode provides a kind of new frame structure, and RS 104 transmits lead code 202 sending the identical time of lead code 202 with BS 102, so the frames in frame in the BS102 and the RS 104 overlap.Allow the frame of BS 102 align with the frame of RS 104 also to have and be beneficial to the switching of MS 106 to next sub-district (such as RS Microcell 108, MMR sub-district 100 etc.), this is because whole network may be synchronously.In downlink subframe, RS is at first from the transmission of subframe first reception from BS, then by relevant information is sent to MS and relevant information is forwarded to MS in the downlink subframe second portion.In uplink sub-frames, RS at first receives from its MS, then by information is sent to BS and this information is forwarded to BS from MS in the uplink sub-frames second portion.BS is by RS trunk information back and forth, and sends to the MS that those BS can't directly arrive (perhaps do not use under the situation of relaying and can not arrive with sufficiently high signal quality).The operation to MS 106 is not described, because MS106 can't distinguish the difference between BS 102 and the RS 104.All BS transmit lead code with RS simultaneously so that having the fact of synchronization frame sequential can allow MS search and connect with RS as BS in the network, and this is because the operation of RS and the operation of BS are indiscriminate.
In Fig. 4, the operation of BS 102 and RS104 is as follows.Suppose just operation in MMR sub-district 100 of BS 102.When for the first time opening RS 104, the primary image MS of RS 104 106 is the same at first to be operated with reception/seek mode.RS 104 searches lead code 202 from BS102 as conventional MS 106.RS 104 and BS 102 synchronously after, RS 104 experiences initial ranging and access as MS 106, and carries out any other message (comprising checking, mandate, configuration messages etc.).After these initialization, RS 104 switches to the RS operational mode, and RS 104 begins to transmit RS 104 lead codes 202 that are used for MS 106, so that carry out radio communication.Send RS 104 lead codes 202 sending the identical time of lead code 202 with BS 102.RS 104 can (according to the request from BS) transmits RS 104 lead codes 202 in one group of subcarrier identical or different with BS 102 and with the code-guiding sequence identical or different with BS 102.In Fig. 4, BS102 frame and MS 104 frames are alignment in time each other.At the place that begins of downlink subframe, BS is sent to its relevant MS with its lead code 202 separately with UL/DL-MAP (downlink/uplink MAP) with RS.UL/DL MAP message refers to any radio resource control information of the parameter that comprises the management of wireless communications Radio Resource.
According to the one side of execution mode, it is the independent relaying MAP message of relaying Section Point that first node (such as BS 102) transmits the destination.Typically, the destination by the UL/DLMAP message of first node management is the 3rd node (MS 106a, 106b) of directly communicating by letter with first node.Between first node and the 3rd node, have under the situation of relaying Section Point, be sent to relaying Section Point (RS 104a, 104b), so that transmission and reception between control first node and the relaying Section Point to the relay map message of Section Point.One side according to execution mode, first node is with the division of UL/DL MAP message or be divided into two parts that the destination is respectively the 3rd node and relaying Section Point, and separately each several part is sent to relaying Section Point (such as RS 104) and one or more a plurality of the 3rd node (such as MS 106).
Particularly, BS 102 and RS 104 all downlink subframe begin locate and will be sent to its MS106 as BS → MS_MAP 402 and the RS → MS_MAP 404 of UL/DL-MAP.According to the one side of execution mode, will be split into two message, BS → MS from the UL/DL MAP message of BS 102 BS_ MAP 402 and BS → RS_MAP 406.BS → MS BS _ MAP 402 carries the channel strip assignment information and (can be used for to MS with RS RSThe information that the Radio Resource that transmits is partly relevant) and BS 102 be its MS (MS BS) 106 preparations with BS and MS between the relevant information of transmission, and send at the place that begins of downlink subframe 204 by BS 102.RS → MS RS_ MAP 406 carries from RS to its relevant MS (MS RS) assignment messages of 106 channel strip.Channel allocation refers to the Radio Resource part of using between the node, the distribution of carrying out such as the part (part of individual channel) of Radio Resource in the band.Individual channel can refer to comprise provides any radio resource of limited radio resource for one or more wave bands of node use, and can be cut apart or share according to execution mode.
Because RS 104 must with BS 102 communicate by letter with and MS RSBetween 106 the communication its radio is carried out multiplexingly, so RS 104 only can be in the first of downlink subframe 204 and uplink sub-frames 205 and its MS RS106 communicate.One side according to execution mode, BS → RS_MAP 406 is that RS is prepared by BS 102, the destination is those MS 106 that are directly connected to RS104, and can carry the channel allocation information of the combination in any of the down link of the MS 106 that is used for RS 104 and RS 104 and/or uplink communication link in addition.One side according to execution mode, BS → RS_MAP 406 is prepared by BS, and carry the channel allocation information that is used for all RSs 104 relevant with the transmission between the RS with the BS of up link and down link, and can send in the ending of downlink subframe 204 by BS102, and broadcast or be multicasted to all RS 104.If ending place in each downlink subframe sends BS → RS_MAP, then RS 104 can be by BS 102 by programming of transmitting-receiving handoff parameter or control, so that at postamble place expectation BS → RS_MAP 406 as broadcasting, therefore by transmit BS → RS mapping 406 at the postamble place, before arriving postamble (according to time measurement), RS 104 may needn't optionally switch to receiving mode.In other words, transmit the switching time that BS → RS_MAP406 has reduced RS 104 transceivers at the postamble place.Even so, execution mode is not restricted to this configuration, if such as the switching time that does not need to be broadcast to all RS 104 or transceiver when unimportant.In this BS → RS MAP 406, BS 102 has specified up link and downlink channel allocation for the transmission between BS 102 and the RS 104.BS → RS_MAP 406 has also specified RS 104 can use which part (with time slot or symbolic representation) of resource to come to transmit and to receive from their MS 106 separately to they MS 106 separately in upcoming frame.In current BS → RS_MAP 406, also specified the burst attribute of next BS → RS MAP message.
According to the one side of execution mode, for each RS 104, BS 102 can dispatch symbol 408 during downlink subframe 204 protection at interval so that allow RS 104 switch to receiving mode from transfer mode.Receive just passablely from its BS as long as RS in time changes to receiving mode according to BS → RS_MAP, when needn't limit RS 104 must be from transfer mode (to its MS RSTransmission) switches to receiving mode (receiving) from BS.The switching time of each RS can be different.BS 102 dynamically determines BS → RS and RS → MS in this way RSTransmission can be used the degree of downlink subframe.And, RS 104 beginning of uplink sub-frames everywhere in receiving mode, so that from its MS RSReceive, switch to transfer mode then, so that in the second portion of uplink sub-frames, transmit to BS 102.Also be by appointment among BS BS → RS MAP406 formerly this switching time, and based on RS → BS and MS RSThe bandwidth requirement of → RS link can change between frame.In this way, the single allocation of radio resources in the RS Microcell 108 of MMR sub-district 100 can be become very flexible, and it is dynamic to adapt to network very well.
In Fig. 4, because the clock at RS 104 places may be with respect to the clock drift of BS 102 (just BS and RS may not synchronously), so RS 104 can periodically carry out synchronous with BS 102 again.BS 102 can for example more synchronously lead sign indicating number 408 with additional character 408 as relaying in downlink subframe ending place every the M frame and transmit once to RS 104.Relaying is led sign indicating number 408 more synchronously and is undertaken by lead code 202 carrying out synchronous to RS after the initialization synchronously at operation 304 places again.If this special relaying synchronizing symbol again is not positioned at beginning of frame, but respectively near the centre of frame or be positioned at postamble, then can with this special relaying again synchronizing symbol be called intermediate code or after lead sign indicating number.The exact position of code-guiding sequence can be by previous BS → RS_MAP message appointment synchronously again for relaying.A relaying exemplary position (but being not limited to) of synchronous code-guiding sequence again is last symbol of down link (according to circumstances also can be up link) subframe 204, because this moment, all RS were in receiving mode.This allows to lead sign indicating number and combines (for example be included in interior, adjacent etc.) as the part of BS → RS_MAP message, is received by RS in identical or a receiving mode session thereby make BS → RS MAP 406 and relaying lead sign indicating number more synchronously.Can in BS → RS MAP message, keep the particular bit position, so that indicate next BS → RS_MAP message whether in the end to comprise the middle sign indicating number of leading synchronously of relaying in a symbol.An aspect according to execution mode, relaying is led sign indicating number more synchronously may be only by RS 104 identifications, but invisible or transparent for MS 106, because MS 106 will not need this relaying to lead sign indicating number more synchronously, and may be because waste processing time and poor efficiency to its locking.
In Fig. 4, BS 102 and RS 104 transmit lead code 202 simultaneously, and BS 102 transmits the synchronous again back of relaying code-guiding sequence 408 (leading sign indicating number 408 in Fig. 4 after being called) once in a while, so that carry out the synchronous of RS104.After lead the position of sign indicating number 408 (they being not in each frame, to need) and BS → RS_MAP message 406 and can be by pointing out in BS 102 BS → RS MAP message 406 (perhaps other RS configuration messages) formerly, and can adjust the relaying ratio of code-guiding sequence (being limited by certain minimum rate requirement) synchronously again.In other words, when opening RS 104, RS 104 is at first as MS 106 and BS 102 exchange messages.RS 104 begins its oneself frame by transmitting lead code 202 and DL/UL MAP alignedly with BS 102 then.RS frame 206 aligns with BS frame 204.In an illustrative embodiments, BS 102 is divided into two parts with its UL/DL MAP: at beginning of descending chain circuit frame BS → MS MAP 402 of sending of place and BS → RS MAP 406 of sending in ending place of descending chain circuit frame, yet execution mode is not restricted to this configuration, and also can cut apart UL/DL MAP.In addition, BS 102 sends new relaying back code-guiding sequence 408 synchronously again in the ending of down link BS frame 204 (near ending place) once in a while after BS → RS MAP 406 or in small time slot, so that it is synchronous to carry out RS.
In illustrative embodiments,, can define following new information in order to support the frame structure in the execution mode based on MMR 100:
1. to the known default CID (connection ID) of all RS among the MMR 100.Be used for message is broadcast to all RS (such as BS → RS configuration messages) from BS.
2.BS → RS_MAP 406 comprises the more a plurality of of in any combination of following part or combination in any:
A.BS → RS broadcast message
If i. the synchronous again code-guiding sequence 408 of relaying exists and is not the part of BS → RS_MAP message 406, then in next frame, specify the relaying position of synchronous code-guiding sequence 408 again.As Tab phenolphthaleinum sign indicating number 408 are parts of (comprising/be included in) BS → RS MAP, perhaps just in time are positioned at after BS → RS MAP, perhaps as Tab phenolphthaleinum sign indicating number 408 last symbol of frame always, then may not need specify its position in Frame.If possible have a plurality of sign indicating numbers 408 of leading, the index of leading sign indicating number of then specifying RS to use.
Ii. the burst attribute of next BS → RS_MAP (burst profile), comprise the subcarrier (subchannel) of use, the symbol that uses, the encoding scheme and the duplication code of use, and lead sign indicating number 408 and whether be included in last symbol of BS → RS MAP 406.
b.BS→RS i?DL_MAP
I. be but that the Applied Physics layer system is specified from BS to RS such as OFDMA in next downlink subframe 204 iTransmission.The delivering power that transmit the subcarrier (subchannel) that standard can comprise that channel partly distributes, uses, the symbol that uses, encoding scheme, is used for transmitting and duplication code and the information relevant with the grouping of transmission in transmitting burst one or (combination in any) are more a plurality of.
c.RS i→BSUL_MAP
I. the temporal correlation according to the network definition is but that the Applied Physics layer system is specified from RS such as OFDMA in upcoming uplink sub-frames iTransmission to BS.Transmitting standard can comprise and BS → RS iThe similar information of transmission standard among the DL_MAP.
d.RS i→MSDL_MAP
I. be each RS iSpecify RS iCan be used for to MS RSiBut the downlink radio resource that transmits (section, sub-carriers/subchannels, symbol and maximum transmission power) at Applied Physics layer system (such as OFDMA).May not specify RS i→ MS RSiThe detailed burst attribute that transmits.In other words, BS → RS_MAP 406 can comprise that (comprising) is with RS 104 channel allocation to the MS106 related with RS 104.RS iDispatching it to MS RSiDown link transmit and produce its RS → MS RSiThe information that provides in this DL_MAP is provided in the time of DL_MAP.
e.MS→RSiUL_MAP
I, for each RS i, be RS iCan be used for from MS RSiBut be sent to the Applied Physics layer system of RSi, such as OFDMA specific uplink Radio Resource (sub-carriers/subchannels, symbol).May not specify MS RSiThe detailed burst attribute that → RS transmits.RS iDispatching from MS RSiUp link transmit and produce its RS → MS RSiThe information that provides in this UL MAP is provided in the time of UL_MAP.
At RS i→ MS DL_MAP and MS → RS iThe channel strip that carries out among the UL_MAP distribute from now on the k frame and l frame (for UL and DL, k and l can be different, and by BS appointment in BS → MS_MAP) effectively, till by the next BS that carries this information → RS_MAP change.Fig. 5 is for according to a kind of control messages temporal correlation of execution mode with used up link in the MMR sub-district and the view of the data flow of the example T DD frame structure in the downlink communication.In Fig. 5, the data flow arrow that extends from colored indicator collet has the colour indication identical with colored indicator collet.In Fig. 5, supposed UL-MAP and the up link that the is scheduled minimum time between transmitting.
According to the one side of execution mode, under the situation of exemplary frame structure, can carry out two layers of RRM, wherein 102 couples of BS distribute to each RS 104 be used for its with by RS 104 directly service or the MS 106 (MS under RS control RS) between the radio resource that transmits of the UL/DL that carries out partly distribute and the MS that directly serves of RS 104 and RS 104 RSDetailed transmission plan (set of MS access link 112) between 106 is managed by RS → MS MAP 404 by RS 104.This communication overhead and BS that has reduced between RS and the BS produces the calculated load of detailed transmission plan for each RS, increased the capacity of each RS Microcell 108 simultaneously, this is because each MS is more at the channel quality information of the renewal at RS place, and RS promptly responds the channel information of these variations to MS.
Fig. 6 be according to a kind of execution mode at the functional-block diagram that uses the equipment of radio communication frame structure between the node of individual channel.In Fig. 6, equipment 600 can for as BS 102 and/or RS 104, bring into play function and operation such as (but being not limited to) and use any calculation element that carries out radio communication according to other devices of the frame structure of execution mode.Equipment 600 can comprise the display 602 that is used for the explicit user interface or is used to be connected to the interface of exterior display device.Controller 604 (such as CPU) execution command (such as computer program or software), this commands for controlling equipment is carried out baseband operations.Typically, memory 606 stored are by the instruction of controller 604 execution.One side according to execution mode, this equipment and any computer-readable medium 610 communicate such as (but being not limited to) physical computer readable medium recording program performing (such as hard disk, memory) or with the wired unit of software realization and/or the computing hardware that communicates by the wire/wireless carrier signal.According to the one side of execution mode, equipment 600 carries out radio communication with the Target Wireless communication network such as (but being not limited to) MMR sub-district 100.Display 602, CPU 604, memory 604 and computer-readable medium 610 are by data/address bus 608 mutual communication.
Fig. 7 is the function diagram according to the processing layer in the device of Fig. 6 of execution mode (software and/or computing hardware).Among Fig. 7, processing layer comprises network layer 702, media interviews controls (MAC) layer 704 and physical layer 706.The processing layer of Fig. 7 is a logical layer, and execution mode is not limited to the processing layer of these examples, and other processing layer structures also can be provided.According to an aspect of execution mode, network layer 702 is the software of being carried out by controller 704.MAC 704 and physical layer 706 are software and/or the computing hardware that are included in the wireless communication network unit 610 as computer-readable medium.MAC layer 704 and physical layer 706 realize that all types of target wireless network inserts standard, as (being not limited to) TDD, FDD and/or CDMA.The example of target radio network can be MMR sub-district 100.Execution mode can be that any known computer-readable medium 610 is stored or be encoded in to software (, as, computer readable recording medium storing program for performing is not limited to, CD, digital versatile disc (DVD), memory or carrier communication medium or electromagnetic signal etc.) and/or any computing hardware.In one embodiment, wireless communication frame is a structure and transmitting in the standard of the MAC layer 704 of target radio network node (such as in base station (BS) 102 and/or in relaying Section Point (RS) 104) and/or physical layer 706.Usually (but being not limited to), network layer 702 provide the wired and/or radio communication to the private/public networks outside the target radio network (as, the Internet) to insert.Network layer 403 can be used as management function, as dynamically (in real time) (as, according to the Internet resources situation) provide (download) by carrying out configuration/Control Parameter that the first node of radio communication is set up with relaying Section Point to the three nodes.
The beneficial effect of execution mode has provided the at utmost flexibility of first node and relaying Section Point to or more a plurality of the 3rd nodes sharing individual channel resources (bandwidth), such as under the situation of MMR sub-district 100, BS 102 and RS 104 use the flexibility of individual channel Radio Resource in RS Microcell 108.Compare with the scheme among Fig. 2, new execution mode frame structure is very flexible, because can any share of bandwidth be distributed to transmission BS → RS, RS → MS, RS → BS, MS → RS according to the flow of different piece (such as the different RS Microcells 108 in the MMR network 100) generation such as BS.Thereby make MMR network 100 adapt to different user distribution and user traffic patterns.The execution mode of describing provides the Section Point of the relaying with single radio interface, such as being used to reduce cost, this execution mode also regulation relaying Section Point uses identical channel and the 3rd node of first node and the service of relaying Section Point to communicate, yet execution mode is not restricted to this configuration, and execution mode can be provided in such wireless communication cell, in this wireless communication cell, in the relaying Section Point one or more a plurality ofly communicate with individual channel, and other relaying Section Points can communicate with a plurality of channels.According to the one side of execution mode, in this mixed type individual channel or multichannel relaying Section Point sub-district, in the individual channel relaying Section Point one or more a plurality ofly can be the target of RRM.
According to detailed specification, many feature and advantage of execution mode will become apparent, and therefore, be intended to contain by claims all this feature and advantage of the execution mode that falls in its true spirit and the scope.In addition, because to those of ordinary skill in the art, be easy to carry out many modifications and change, therefore, do not expect the working of an invention mode is restricted to the accurate structure and the operation of institute's example and description, and can cover all suitable modifications and the equivalent that falls in its scope.

Claims (20)

1, a kind of method, this method comprises:
Send the first node lead code and the relaying Section Point lead code of the Frame of the Frame of alignment first node and relaying Section Point simultaneously, described first node and described relaying Section Point to or more a plurality of the 3rd node all carry out radio communication with individual channel;
Specific radio electric resources Control Parameter, described radio resource Control Parameter is at the first node of alignment and the described relaying Section Point radio resource to the described radio communication of management in the described individual channel between described the 3rd node; With
Periodically with relaying more synchronously code-guiding sequence be sent to described relaying Section Point, described relaying more synchronously code-guiding sequence manage alignment in the described individual channel of described first node frame and described relaying Section Point frame.
2, method according to claim 1, wherein said radio resource Control Parameter comprise synchronous again existence and/or the position of code-guiding sequence in next wireless communication link Frame of described relaying Section Point, a plurality of described relaying Section Points are the index of synchronous code-guiding sequence again, the burst attribute of next radio resource Control Parameter, the down link that carries out to described relaying Section Point in the next Frame transmits, transmit to the up link that described first node carries out from described relaying Section Point in the next Frame, described relaying Section Point in the described individual channel is to the down link and/or the uplink radio resources of described the 3rd node, perhaps its any combination.
3, method according to claim 1, wherein said radio resource Control Parameter have been specified at down link and/or the uplink channel of relaying Section Point described in the described individual channel to described the 3rd node and have partly been distributed, and
Described method further comprises the signal plan of according to described channel strip allocation manager described the 3rd node being carried out by described relaying Section Point.
4, method according to claim 1, wherein said radio resource Control Parameter are to transmit in ending place of wireless communication link frame.
5, the synchronous again code-guiding sequence of method according to claim 3, wherein said relaying Section Point transmits after described radio resource Control Parameter.
6, method according to claim 1, wherein said radio resource Control Parameter comprise the synchronous again code-guiding sequence of described relaying Section Point.
7, method according to claim 1, wherein said first node has dynamically been specified described Control Parameter.
8, method according to claim 1, wherein said Control Parameter is based on the Radio Resource requirement to the described downlink/uplink communication link between described the 3rd node of described first node and described relaying Section Point, specified transceiver mode switching time for described relaying Section Point in described individual channel.
9, method according to claim 1,
Wherein said radio resource Control Parameter has been specified in described individual channel, described first node and described relaying Section Point to the down link between described the 3rd node and/or uplink channel partly distributes and
Described method further comprises:
Distribute the described relaying Section Point of management in channel appointed and/or the signal plan of described the 3rd node according to described channel strip by described first node and/or described relaying Section Point;
Specify described radio resource Control Parameter by described first node, described relaying Section Point or its any combination.
10, method according to claim 9, wherein said radio resource Control Parameter comprise synchronous again existence and/or the position of code-guiding sequence in next wireless communication link Frame of described relaying Section Point, described a plurality of relaying Section Point is the index of synchronous code-guiding sequence again, the burst attribute of next Radio Resource Control Parameter, the down link that carries out to described relaying Section Point in the next Frame transmits, transmit to the up link that described first node carries out from described relaying Section Point in the next Frame, down link and/or the uplink radio resources of described relaying Section Point in the described individual channel of described the 3rd node, the described transceiver mode switching time that is used for the described individual channel of relaying Section Point, perhaps its any combination.
11, method according to claim 1, wherein said node is according to having used in the described individual channel one group or OFDM (OFDMA) system of more groups of subcarriers to carry out radio communication.
12, a kind ofly carry out the equipment of radio communication as first node and relaying Section Point to or more a plurality of the 3rd node with individual channel, this equipment comprises:
Controller,
Control sends the first node lead code and the relaying Section Point lead code of the Frame of described first node of alignment and described relaying Section Point simultaneously, and described first node and described relaying Section Point carry out radio communication with individual channel;
Send one or more radio resource Control Parameter by described first node, described radio resource Control Parameter is at the first node of alignment and the described relaying Section Point radio resource to the described radio communication of management in the described individual channel between described the 3rd node; With
Periodically with relaying more synchronously code-guiding sequence be sent to described relaying Section Point, described relaying more synchronously code-guiding sequence manage in the described individual channel of described first node frame and described relaying Section Point frame synchronously.
13, equipment according to claim 12, wherein said radio resource Control Parameter comprise synchronous again existence and/or the position of code-guiding sequence in next wireless communication link Frame of described relaying Section Point, a plurality of described relaying Section Points are the index of synchronous code-guiding sequence again, the burst attribute of next radio resource Control Parameter, the down link that carries out to described relaying Section Point in the next Frame transmits, transmit to the up link that described first node carries out from described relaying Section Point in the next Frame, described relaying Section Point in the described individual channel is to the down link and/or the uplink radio resources of described the 3rd node, perhaps its any combination.
14, equipment according to claim 13, wherein said radio resource Control Parameter have been specified at down link and/or the uplink channel of relaying Section Point described in the described individual channel to described the 3rd node and have partly been distributed.
15, equipment according to claim 13, wherein said radio resource Control Parameter are to transmit in ending place near the wireless communication link Frame.
16, the synchronous again code-guiding sequence of equipment according to claim 14, wherein said relaying Section Point transmits after described radio resource Control Parameter.
17, equipment according to claim 13, wherein said radio resource Control Parameter comprise the synchronous again code-guiding sequence of described relaying Section Point.
18, described radio resource Control Parameter is dynamically specified and sent to equipment according to claim 13, wherein said controller.
19, equipment according to claim 13, wherein said controller and WiMAX mobile multi-hop carry out radio communication based on described second via node in the sub-district (MMR sub-district) of relaying to described the 3rd node and/or direct and described the 3rd node, and described first node is the base station, and described the 3rd node is user's mobile radio station.
20, equipment according to claim 19, wherein said controller use a group in the described individual channel or organize subcarrier more, insert (OFDMA) system according to orthogonal frequency-division and carry out radio communication.
CN200780030595.3A 2006-08-18 2007-07-31 Wireless data frame structure between nodes Expired - Fee Related CN101507144B (en)

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