CN102196575A - Resource mapping method and base station - Google Patents

Resource mapping method and base station Download PDF

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Publication number
CN102196575A
CN102196575A CN2010101495075A CN201010149507A CN102196575A CN 102196575 A CN102196575 A CN 102196575A CN 2010101495075 A CN2010101495075 A CN 2010101495075A CN 201010149507 A CN201010149507 A CN 201010149507A CN 102196575 A CN102196575 A CN 102196575A
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resource unit
base station
resource
continuous
indication information
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CN2010101495075A
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CN102196575B (en
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宁丁
关艳峰
方惠英
宁迪浩
朱登魁
鲁照华
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ZTE Corp
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ZTE Corp
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Priority to CN201010149507.5A priority Critical patent/CN102196575B/en
Priority to PCT/CN2010/077862 priority patent/WO2011113277A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The invention discloses a resource mapping method and a base station. The resource mapping method comprises the following steps: a plurality of base stations inside a communication system send superframe heads to a terminal, wherein the superframe heads carry indicating information indicating the using state supporting an open loop area; and the plurality of base stations carry out resource mapping according to the indicating information so that aligned logical resource units exist among the plurality of base stations. According to the invention, the system efficiency can be enhanced.

Description

Method for mapping resource and base station
Technical field
The present invention relates to the communications field, in particular to a kind of method for mapping resource and base station.
Background technology
Based on OFDM (Orthogonal Frequency DivisionMultiplexing, abbreviate OFDM as) and OFDM (Orthogonal FrequencyDivision Multiple Address, abbreviate OFDMA as) in the communication system of technology, for example, at Long Term Evolution (Long Term Evolution, abbreviate LTE as), Ultra-Mobile Broadband (Ultra Mobile Broadband, abbreviate UMB as) and wireless communication system such as IEEE 802.16m in, wireless money is divided framing and manages, but each OFDMA symbol all comprises a plurality of mutually orthogonal subcarriers, and terminal takies the parton carrier wave usually, thereby can adopt partial frequency multiplexing (Fractional Frequency Reuse, abbreviate FFR as) etc. technology reduce interference, improve to cover; Secondly, because wireless channel environment changes frequent, the base station is in order to obtain the gain of frequency diversity gain and frequency selective scheduling, the available physical subcarrier is divided into physical resource unit (Physical Resource Unit, abbreviate PRU as), and then physical resource unit is mapped as continuous resource unit (Contiguous ResourceUnit, abbreviate CRU as) and distributed resource unit (Distributed Resource Unit, abbreviate DRU as), to improve transmission performance, wherein, the subcarrier in the continuous resource unit is all continuous, and the subcarrier in the distributed resource unit is discontinuous fully or not exclusively continuous; In addition, along with frequency resource is rare day by day, multiple different bandwidth (for example, 5MHz, 10MHz or 20MHz) or multi-carrier operation need be supported in the base station, to utilize different frequency resources and to satisfy the demand of different operators.
The resource mapping process of considering the wireless communication system of OFDM or OFDMA technology will more complicated, and in order to reduce the indication signaling expense of its resource mapping, optimization system information management and transmission method need carry out rational resource mapping.In order to ensure the efficient of wireless communication system, the base station is mapped as the Radio Resource of physics the Radio Resource of logic usually, for example, physical sub-carrier is mapped as the logical resource unit, and the scheduling of Radio Resource is realized in the base station by the scheduling logic Resource Unit.
Particularly, for wireless communication system based on OFDM or OFDMA, its Radio Resource mapping is mainly according to the frame structure and the resource structures of this wireless communication system, and frame structure is described the control structure of Radio Resource on time domain, and resource structures has been described the control structure of Radio Resource on frequency domain.Frame structure is divided into Radio Resource the unit of different brackets on time domain, as superframe (Superframe), frame (Frame), subframe (Subframe) and symbol (Symbol), by being set, different control channel (for example, broadcast channel, clean culture and Multicast Channel etc.) realizes scheduling controlling.
For example, shown in Figure 1, Radio Resource is divided into superframe on time domain, each superframe comprises 4 frames, each frame comprises 8 subframes, subframe is made up of 6 basic OFDMA symbols, and what OFDMA symbols are the factors such as circulating prefix-length of bandwidth that real system is supported as required and/or OFDMA symbol determine specifically to comprise in each grade unit in the frame structure; In addition, system is provided with broadcast channel (owing to be positioned at the superframe head, being also referred to as superframe head (Superframe Header abbreviates SFH as)) in can first descending sub frame in superframe and sends system information such as resource mapping; And system can also be provided with clean culture and/control channel of multicast character sends scheduling control informations such as resource allocation.
According to factors such as networking technology, interference mitigation technology and types of service, resource structures is divided into a plurality of frequency partition (Frequency Partition with bandwidth available on the frequency domain, abbreviate FP as), and then the frequency resource in the frequency partition is divided into the continuous resource unit and/or the distributed resource unit is dispatched.For example, as shown in Figure 2, the available physical subcarrier of a subframe is divided into 3 frequency partition, each frequency partition is divided into continuous logic Resource Unit (CLRU) and distributed logic Resource Unit (DLRU), the continuous logic Resource Unit is used for frequency selective scheduling, and the distributed logic Resource Unit is used for frequency diversity scheduling.
Method for mapping resource generally need be supported 5MHz, 7MHz, 8.75MHz, 10MHz and 20MHz system bandwidth (abbreviation bandwidth); and when the part when not considering multi-carrier operation protection subcarrier is used to shine upon PRU under 5MHz, 7MHz, 8.75MHz, 10MHz and the 20MHz bandwidth; the number of corresponding PRU is 24,48,48,48 and 96; therefore, the indication parameter difference of resource mapping under the different system bandwidth.For example, bandwidth is that each subframe of system of 5MHz has 24 PRU, when 4 PRU form a subband (Subband), 6 Subband are then arranged at most, and there are 48 PRU in 7MHz, 8.75MHz or 10MHz system, 12 Subband are then arranged at most, just need carry out different settings to pare down expenses subband allotment (Subband Allocation Count abbreviates SAC as) to these two kinds of systems.
The downlink resource mapping process generally includes: sub-band division (Subband Partitioning), little band displacement (Miniband Permutation), frequency partition is divided (FrequencyPartitioning), continuous resource unit/distributed resource unit distributes (Contigous ResourceUnit/Distributed Resource Unit Allocation, abbreviate CRU/DRUAllocation as) and subcarrier permutation (Subcarrier Permutation), comprise in the ascending resource mapping process: sub-band division, little band displacement, frequency partition is divided, continuous resource unit/distributed resource unit distributes and Tile displacement (Tile Permutation).Subband is generated by step Subband Partitioning, forms by N1 continuous PRU, and N1=4 for example, Miniband is generated by step Miniband Permutation, is made up of the individual continuous PRU of N2, for example N2=1.The Subband and the Miniband that generate will be assigned to each frequency partition by step F requency Partitioning, enter the 4th step CRU/DRU Allocation of resource mapping then.
At present, continuous resource unit/distributed resource unit distribution realizes in the following manner: the base station will send DCAS to terminal by SFH SB0, DCAS MB0, DCAS iThe descending continuous resource of the notice terminal method that the unit/the distributed resource unit distributes, the base station also will send UCAS to terminal by SFH SB0, UCAS MB0, UCAS iThe up continuous resource of the notice terminal method that the unit/the distributed resource unit distributes.In the base station physical resource of terminal under own and own is carried out continuous resource unit/distributed resource unit and divide timing, need carry out continuous resource unit/distributed resource unit distribution according to sub stituent and/or displacement seed, promptly continuous resource unit/distributed resource unit distributes relevant with the sub stituent and/or the displacement seed of base station.
Multiple-input and multiple-output (Multiple Input Multiple Output abbreviates MIMO as) system is the communication system of settling a plurality of antennas respectively at transmitting terminal and receiving terminal.It mainly is divided into two classes, when there are a plurality of antenna in transmitting terminal or receiving terminal, and the data set that each transmitting antenna sends is identical, and receiving terminal merges the signal that obtains a plurality of branches, thereby improve the reliability of link, this class MIMO technology is called space diversity; In addition, when there are a plurality of antenna in transmitting terminal and receiving terminal simultaneously,, send a plurality of data flow thereby can walk abreast simultaneously because the mimo channel equivalence becomes a plurality of parallel channels, the transmission rate of raising data, this class MIMO technology is called spatial reuse.
In the MIMO communication system, receiving terminal estimates that according to the whole bag of tricks (method of estimating channel includes but not limited to use dedicated pilot, middle pilot tone for the situation of channel, methods such as Sounding), the information that will reflect channel situation is then carried out certain processing, feed back to transmitting terminal again, the content of feedback and processing method are called as the MIMO feedback model.
Open loop zone (Open Loop Region abbreviates OL Region as) is meant distributes a physical resource on the physical location of communication system, and similar MIMO feedback model is all used to this piece physical resource in all base stations.In actual communication systems, the open loop zone is used for carrying out similar MIMO feedback operation to all base stations, to reduce the interference between the cell base station.
In order to make the resource that all base stations can the divided ring zone carry out unified scheduling, the open loop zone needs each base station all to use identical physical resource, and the MIMO feedback model in the open loop zone of each base station is also with same or similar.But in present communication system based on OFDM and OFDMA technology, because it is relevant with the sub stituent and/or the displacement seed of base station that continuous resource unit in the process of resource mapping/distributed resource unit distributes, and the sub stituent of each base station or displacement seed are inequality, therefore, the physical location difference of the logical resource unit that distributes between the different base station, make each base station use the physical resource difference of same logical resource scheduling, thereby make different base station can't dispatch identical physical resource as the open loop zone.
Summary of the invention
Main purpose of the present invention is to provide a kind of method for mapping resource and base station, to address the above problem at least.
According to an aspect of the present invention, provide a kind of method for mapping resource, having comprised: a plurality of base stations send the superframe head to terminal in the communication system, wherein, carry the indication information that the user mode in open loop zone is supported in indication in this superframe head; The resource mapping is carried out according to this indication information in above-mentioned a plurality of base station, makes to have the logical resource unit that aligns between above-mentioned a plurality of base stations.
Further, above-mentioned user mode comprises: enable or forbid; Perhaps, above-mentioned user mode comprises: open or close.
Further, above-mentioned indication information one of can be in the following way carried in the base station: carry out mask by comprise 1 binary bits, CRC by particular sequence and main superframe head in the superframe head, CRC by particular sequence and auxilliary superframe head carries out mask.
Further, this method also comprises: the base station wherein, carries indication as the type of the logical resource unit of open loop zone use and/or the identification information of quantity to terminal transmitting system configuration messages in this system configuration message.
Further, the logical resource unit of alignment is meant the logical resource unit that physical location is identical.
Further, above-mentioned indication information indication supports the user mode in open loop zone to comprise: this indication information indication not carrying out in resource mapping process distribution of continuous resource unit/distributed resource unit; Then a plurality of base stations are carried out the resource mapping and comprised: a plurality of base stations are in the resource mapping process, in the branch timing of carrying out continuous resource unit/distributed resource unit, with the little band in the frequency partition all as the distributed resource unit, with the subband in the frequency partition all as the continuous resource unit.
Further, above-mentioned indication information is specifically indicated the distribution of whether carrying out continuous resource unit/distributed resource unit in the resource mapping process in all frequency partition; Then a plurality of base stations in the resource mapping process, in the branch timing of carrying out continuous resource unit/distributed resource unit, with the little band in all frequency partition all as the distributed resource unit, with the subband in all frequency partition all as the continuous resource unit.
Further, above-mentioned indication information is specifically indicated the distribution of whether carrying out continuous resource unit/distributed resource unit in the resource mapping process at the preset frequency subregion; A plurality of base stations in the resource mapping process, in the branch timing of carrying out continuous resource unit/distributed resource unit, with the little band in the preset frequency subregion all as the distributed resource unit, with the subband in the described preset frequency subregion all as the continuous resource unit.
Further, above-mentioned indication information indication supports the user mode in open loop zone to comprise: this indication information indicates a plurality of base stations to adopt identical predefined parameter to carry out the distribution of continuous resource unit/distributed resource unit; A plurality of base stations are carried out the resource mapping and comprised: a plurality of base stations in the branch timing of carrying out continuous resource unit/distributed resource unit, adopt identical predefined parameter to carry out the distribution of continuous resource unit/distributed resource unit in the resource mapping process.
Further, a plurality of base stations of the concrete indication of above-mentioned indication information all adopt identical predefined parameter to carry out the distribution of continuous resource unit/distributed resource unit in all frequency partition; A plurality of base stations all adopt identical predefined parameter to carry out the distribution of continuous resource unit/distributed resource unit in all frequency partition in the resource mapping process.
Further, a plurality of base stations of the concrete indication of above-mentioned indication information adopt identical predefined parameter to carry out the distribution of continuous resource unit/distributed resource unit at the preset frequency subregion; A plurality of base stations all adopt identical predefined parameter to carry out the distribution of continuous resource unit/distributed resource unit at the preset frequency subregion in the resource mapping process.
Further, above-mentioned predefined parameter comprises: sub stituent and/or displacement seed.
Further, for ascending resource mapping, above-mentioned predefined parameter comprise following one of arbitrarily or combination: sub stituent, displacement seed, UCAS SB0, UCAS MB0And UCAS iFor downlink resource mapping, described predefined parameter comprise following one of at least: sub stituent, displacement seed, DCAS SB0, DCAS MB0And DCAS i
Further, the base station in sending to the system configuration message of terminal or the superframe head comprise the indication signaling that is used to indicate the logical resource unit that uses as the open loop zone.
According to a further aspect in the invention, provide a kind of base station, having comprised: sending module and mapping block.Wherein, sending module is used for sending the superframe head to terminal, wherein, carries the indication information that the user mode in open loop zone is supported in indication in this superframe head; Mapping block is used for carrying out resource mapping according to this indication information, makes the logical resource unit that existence is alignd between other base station in this base station and the communication system.
By the present invention, the base station is when carrying out the resource mapping, guarantee between a plurality of base stations of current communication system, to exist the logical resource unit of alignment, solved different base station of the prior art and can't dispatch identical physical resource, and then improved system effectiveness as the open loop regional issue.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the frame structure schematic diagram according to the wireless communication system of correlation technique;
Fig. 2 is the resource structures schematic diagram according to the wireless communication system of correlation technique;
Fig. 3 is the flow chart according to the method for mapping resource of the embodiment of the invention;
Fig. 4 is the structural representation according to the base station of the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Employed hereinafter abbreviation is as follows:
A-MAP (Advanced MAP): senior MAP channel
CRU (Contiguous Resource Unit): continuous resource unit
DCAS/UCAS (Downlink/Uplink CRU Allocation Size): descending/up continuous resource unit allocated size, DCAS i/ UCAS iThe number of expression continuous resource unit of each frequency partition except that first frequency partition
DCAS MB/ UCAS MB(Downlink/Uplink miniband-based CRUAllocation Size): descending/up continuous resource unit allocated size, particularly, being used for MB is the number that the continuous resource unit of frequency partition is distributed in the unit indication, wherein, in embodiments of the present invention, can be that unit indicates with little band or subband
DCAS SB/ UCAS SB(Downlink/Uplink subband-based CRUAllocation Size): descending/up continuous resource unit allocated size, particularly, be used to indicate the number of distributing to frequency partition, wherein DCAS based on the continuous resource unit of SB SB0/ UCAS SB0The parameter of representing first frequency partition,
DSAC (DL Subband Allocation Count): descending allocation of subbands sum;
DRU (Distributed Resource Unit): distributed resource unit;
IE (Information Element): information element;
LRU (Logical Resource Unit): logical resource unit;
MIMO (Multiple Input Multiple Output): multiple-input and multiple-output;
OL Region (Open Loop Region): open loop zone;
PRU (Physical Resource Unit): physical resource unit;
SFH (Superframe Header): the superframe head, play Broadcast Control Channel in some communication system;
USAC (UL Subband Allocation Count): up allocation of subbands sum.
Fig. 3 is the flow chart according to the method for mapping resource of the embodiment of the invention, and as shown in Figure 3, the method for mapping resource that the embodiment of the invention provides mainly may further comprise the steps (step 302-step S304):
Step S302, a plurality of base stations send superframe head (SFH) to terminal in the communication system, wherein, comprise the indication information that the user mode in open loop zone is supported in indication in this superframe head;
Step S304, the resource mapping is carried out according to above-mentioned indication information in above-mentioned a plurality of base stations, makes the logical resource unit that has alignment between these a plurality of base stations.
The said method that provides by the embodiment of the invention, each base station in the communication system is when carrying out the resource mapping, there is the identical Resource Unit of physical location in the Resource Unit that makes all base stations use, and pass through superframe head notice terminal resource and distribute the use of supporting the open loop zone, thereby can be, and then make different base station can dispatch identical physical resource as the open loop zone so that each base station in the communication system uses the physical resource of same logical resource scheduling identical.
In specific implementation process, the user mode in above-mentioned open loop zone comprises: enable or forbid, promptly above-mentioned indication information indication can be used the open loop zone; Perhaps, this user mode also can comprise: open or close, promptly above-mentioned indication information indicates whether to use the open loop zone.
In specific implementation process, one of can be in the following manner carry above-mentioned indication information: carry out mask by in the superframe head, comprising 1 binary bits, CRC by particular sequence and main superframe head, CRC by particular sequence and auxilliary superframe head carries out mask.
Further, if the user mode in above-mentioned indication information indication open loop zone is for opening, then this method can also comprise: the base station carries indication as the type of the logical resource unit (the logical resource unit of above-mentioned alignment) of open loop zone use and/or the identification information of quantity to terminal transmitting system configuration messages in this system configuration.
Preferably, in embodiments of the present invention, the logical resource unit of alignment is meant the logical resource unit that physical location is identical.
In specific implementation process, if the indication of above-mentioned indication information enables or forbid the use in open loop zone, then the embodiment of the invention provides following dual mode to carry out the resource mapping, respectively this dual mode is described below.
Mode one
In the resource mapping process of communication system, owing to divide timing in continuous resource unit/distributed resource unit, each base station is to distribute according to the sub stituent of each base station and/or conversion seed, thereby cause each base station to use the physical resource difference of same logical resource scheduling, therefore, mode one in the embodiment of the invention, each base station of communication system is in the process of resource mapping, not carrying out continuous resource unit/distributed resource unit distributes, but the Miniband in the frequency partition is all made DRU, Subband in the frequency partition is all made CRU, and by indication information notice terminal.
Particularly, in this mode, whether the above-mentioned indication information that comprises in the superframe head carries out continuous resource unit/distributed resource unit by indication in the resource mapping process distribution identifies whether support the open loop zone.And each base station is in the resource mapping process, in the distribution of carrying out continuous resource unit/distributed resource unit, with the little band (MiniBand) in the frequency partition all as the distributed resource unit, with the subband in the frequency partition (SubBand) all as the continuous resource unit.By this mode, the arrangement position of employed Resource Unit in each base station and Resource Unit is all just the same, thereby has the identical Resource Unit of physical location in the Resource Unit that can realize simply using each base station.
In specific implementation process, the control signaling (OL Region Enable) that can add 1 bit in the superframe head (SFH, some system is called Broadcast Control Channel) of communication system indicates whether to support the open loop zone.Because indication information has only taken 1 bit, therefore can reduce the signaling consumption of system.
When step CRU/DRU Allocation is carried out in each base station in the resource mapping, if OL Region Enable=0 represents to carry out step CRU/DRUAllocation according to existing mode, and according to the DCAS in sub stituent and/or displacement seed and the superframe head SB0, DCAS MB0, and DCAS iDetermine that downlink system carries out this step method, according to the UCAS in sub stituent and/or displacement seed and the superframe head SB0, UCAS MB0, UCAS iDetermine that up-link carries out this step method.If OL Region Enable=1 represents not carry out step CRU/DRU Allocation, but the Miniband in the frequency partition is all made DRU, the Subband in the frequency partition is all made CRU, carry out next step of resource mapping then.
In embodiments of the present invention, when OL Region Enable=1, can represent that all frequency partition do not carry out CRU/DRU Allocation, then each base station is when carrying out frequency map, Miniband in all frequency partition is all made DRU, and the Subband in all frequency partition is all made CRU; Perhaps, when OL Region Enable=1, (for example also can represent some specific frequency partition, first frequency partition that power equates) do not carry out CRU/DRU Allocation, this specific frequency partition can be the frequency partition that base station and terminal are made an appointment, therefore not in the extra information notice of needs, in this case, each base station is when carrying out frequency map, Miniband in the specific frequency partition is all made DRU, and the Subband in the specific frequency partition is all made CRU.
If some frequency partition of system or system is not carried out the CRU/DRUAllocation operation, then can but not necessarily on some frequency partition of this system or this system, distribute the open loop zone.Promptly when OL Region Enable=1, the arrangement position of employed Resource Unit in each base station and Resource Unit is all just the same, and all base stations can be set as open loop Regian zone to a certain physical resource and use.
Mode two
It mainly is because the parameter difference that the branch timing of continuous resource unit/distributed resource unit is used is carried out in each base station in the resource mapping process that each base station uses same logical resource can not be dispatched to identical physical resource, if each base station is in the branch timing of carrying out continuous resource unit/distributed resource unit, adopt identical parameter, then the physical location of the Resource Unit of each base station setting is identical.Therefore, in the mode two of present embodiment, each base station is limited in the branch timing operation parameter of carrying out continuous resource unit/distributed resource unit, to have the identical Resource Unit of physical location in the Resource Unit that guarantees to use each base station.
In this mode, above-mentioned indication information adopts identical predefined parameter to carry out CRU/DRU Allocation by indicating each base station, and each base station when carrying out CRU/DRU Allocation, adopts identical predefined parameter to carry out CRU/DRU Allocation in the resource mapping process.Adopt this mode to change less to the existing resources mapping process.
In concrete the application, above-mentioned indication information can be realized by put into 1 bit information (OL Region Enable) in superframe head (SFH), can indicate step CRU/DRU Allocation still to carry out by this bit information, but the predefined parameter that carries out CRU/DRU Allocation employing of each base station is identical.
Particularly, if OL Region Enable=0 represents still to carry out step CRU/DRU Allocation, and each base station carries out the parameter difference that this step adopts, such as, each base station is with the DCAS in its sub stituent and/or displacement seed and the superframe head (SFH) SB0, DCAS MB0, DCAS iCarry out the parameter of this step as downlink system, perhaps, each base station is with the UCAS in its sub stituent and/or displacement seed and the superframe head SB0, UCAS MB0, UCAS iCarry out the parameter of this step as up-link, wherein, the sub stituent of each base station and/or displacement seed are inequality at least.If OL Region Enable=1 then indicate and still carry out step CRU/DRU Allocation, and the predefined parameter that this step employing is carried out in each base station is identical, for example, (this sub stituent and/or displacement seed are that base station and terminal are made an appointment with predetermined sub stituent and/or displacement seed in each base station, for example, can be 0) and the superframe head in DCAS SB0, DCAS MB0, DCAS iCarry out the parameter of this step as downlink system, perhaps, each base station is with the UCAS in predetermined sub stituent and/or displacement seed and the superframe head SB0, UCAS MB0, UCAS iCarry out the parameter that this step adopts as up-link, promptly each base station adopts identical sub stituent and/or displacement seed to carry out CRU/DRUAllocation.Perhaps, the sub stituent that adopts at CRU/DRU Allocation of each base station and/or displacement seed, DCAS SB0, DCAS MB0And DCAS iOr sub stituent and/or displacement seed, UCAS SB0, UCAS MB0And UCAS iAll be that base station and terminal are made an appointment, i.e. the sub stituent that when CRU/DRU Allocation, adopts of each base station and/or displacement seed, DCAS SB0, DCAS MB0And DCAS iIdentical, perhaps, sub stituent that adopt when CRU/DRUAllocation each base station and/or displacement seed, UCAS SB0, UCAS MB0Identical with UCAS.By this mode,, can guarantee that also the Resource Unit physical location of selecting each base station is identical though CRU/DRUAllocation has been carried out in each base station.
Similar to mode one, in mode two, all adopt identical predefined parameter in the time of can representing that when OL Region Enable=1 all frequency partition are carried out CRU/DRU Allocation, also can represent specific frequency partition (first frequency partition that equates such as power) is adopted identical predefined parameter when carrying out CRU/DRU Allocation, so also can guarantee to have the identical Resource Unit of physical location in the Resource Unit of each base station setting.
Pass-through mode two, when OL Region Enable=1, the employed DRU of some frequency partition of each base station or base station and the arrangement position of DRU are all just the same, and therefore, all base stations can be set as open loop Regian zone to a certain physical resource and use.
Preferably, in aforesaid way one and mode two, also can be in SFH or send to the indication signaling that comprises the logical resource unit that indication uses as the open loop zone in the system configuration message of terminal, each base station with the logical resource unit of this indication signaling indication as the open loop zone, similar MIMO feedback operation is carried out in each base station in the open loop zone, thereby can reduce the interference between the cell base station.
In concrete the application, this indication signaling can be used to indicate the quantity of using the logical resource unit as the open loop zone, in this case, the open loop zone can be from the lowest order of the logical place of logical resource unit, arrange the logical resource unit of the indicated quantity of this indication signaling successively downwards, and other logical resource unit does not use as the open loop zone.The example ratio, when the length of OL Region DLRU is 2 bits, during OL Region DLRU=00, expression does not have the DLRU resource as the open loop zone, and during OL Region DLRU=01, expression has 1 DLRU resource as the open loop zone, during OL Region DLRU=10, expression has the 2DLRU resource as the open loop zone, and during OL Region DLRU=11, expression has the 3DLRU resource as the open loop zone.If there is DLRU to be used as the open loop zone, then with the lowest order of open loop zone, to arrange downwards successively from the logical place of DLRU, surplus resources is not done the open loop zone and is used.
It needs to be noted that in embodiments of the present invention, above-mentioned dual mode can be only at the downlink resource mapping settings, and not at up mapping resource, vice versa.
In order to further specify the technical scheme that the embodiment of the invention provides, describe below by specific embodiment.
Embodiment one
Adopt aforesaid way one to carry out the resource mapping in the present embodiment.
In the present embodiment, in the SFH that the base station sends terminal a signaling OLRegion Enable is set, the notice terminal resource distributes the use of whether supporting the open loop zone, and particularly, this OL Region Enable signaling definition is as shown in table 1.
Table 1
Describe Size (bit) Remarks
S-SFH SP1 IE form ()
OL?Region?Enable 1 OL Region Enable=1, system can support the open loop zone
In the present embodiment, if OL Region is Enable=1, expression can be supported the open loop zone, but not necessarily there is the open loop zone, the CRU/DRUAllocation of base station in the resource mapping step do not carry out, directly the Miniband in the frequency partition is all made DRU, the Subband in the frequency partition is all made CRU, the same with the DRU physical location that keeps each base station to take out.If OL Region is Enable=0, the open loop zone can not be supported in expression, and the CRU/DRU Allocation in the resource mapping step carries out according to usual step, promptly according to the sub stituent of each base station and/or the DCAS in displacement seed and the superframe head SB0, DCAS MB0, DCAS iThe CRU/DRU that determines downlink system distributes, according to the UCAS in sub stituent and/or displacement seed and the superframe head SB0, UCAS MB0, UCAS iThe CRU/DRU that determines up-link distributes.
It needs to be noted that present embodiment can be only at the downlink resource setting, and not at the setting of ascending resource, vice versa.
Embodiment two
In the present embodiment, adopt aforesaid way two to carry out the resource mapping.
In the present embodiment, in the SFH that the base station sends terminal a signaling OLRegion Enable is set, the notice terminal resource distributes the use of whether supporting the open loop zone, and particularly, this OL Region Enable signaling definition is as table 2.
Table 2
Describe Size (bit) Remarks
S-SFH SP1 IE form ()
OL?Region?Enable 1 OL Region Enable=1, system can support the open loop zone
If OL Region is Enable=0, the open loop zone can not be supported in expression, and the CRU/DRU Allocation in each base station resource mapping step carries out according to usual step, according to the sub stituent of each base station and/or the DCAS in displacement seed and the superframe head SB0, DCAS MB0, DCAS iThe CRU/DRU that determines downlink system distributes, according to the UCAS in each base station sub stituent and/or displacement seed and the superframe head SB0, UCAS MB0, UCAS iDetermine that up-link CRU/DRU distributes.
If OL Region is Enable=1, expression can be supported the open loop zone, but not necessarily there is the open loop zone, CRU/DRU Allocation in the resource mapping step still carries out, but sub stituent that use when carrying out this step all base stations and/or displacement seed are arranged to the same (for example being arranged to 0), the same with the DRU physical location that keeps each base station to take out, but this step can not influence sub stituent and/or displacement seed that other steps are used.
It needs to be noted that the method that adopts in the present embodiment can be only at the downlink resource setting, and not at the setting of ascending resource, vice versa.
Embodiment three
In the superframe head SFH bag that the base station sends, use the mask CRC check bit of son bag to represent whether this open loop zone opens.Such as when the CRC of mask length is 16bit, as then CRC and special vector (1111111111111111) carry out XOR (or mask) to represent to open the open loop regional function, send then, as expression do not open the open loop regional function then CRC and special vector (0000000000000000) carry out XOR (or mask), send then.Receiving terminal can be offered an explanation CRC by the content of child bag and carried out XOR with that special vector, by judging whether to open the open loop regional function.
SFH bag wherein can refer to SFH terminal all son bag or certain special stator pack, when 3 son bags SP1, SP2, SP3 are arranged as SFH, can represent whether open the open loop regional function with the CRC check of SP1 separately, also can require the CRC check result of 3 son bags all to detect simultaneously, when the check results of having only three sons to wrap all was certain particular value, just whether expression opened the open loop regional function.
Embodiment four
Transmit control message to terminal in the base station, comprise the parameter in open loop zone in the control messages, parameter includes but not limited to one of following or combination: the length in the type in open loop zone, open loop zone and the position in open loop zone.Described control messages comprise following one of arbitrarily or combination: system configuration message, superframe head and A-MAP IE.
Also provide a kind of base station according to the embodiment of the invention, this base station can be used to the said method of realizing that the embodiment of the invention provides.Fig. 4 is the schematic diagram according to the base station of the embodiment of the invention, and as shown in Figure 4, this base station comprises: sending module 40 and mapping block 42.Wherein, sending module 40 is used for sending the superframe head to terminal, wherein, comprises the indication information that is used to indicate the use of supporting the open loop zone in this superframe head; Mapping block is used for carrying out resource mapping according to described indication information, so that have the identical Resource Unit of physical location in the Resource Unit of other base station use in the Resource Unit that use this base station and the communication system.
By the above-mentioned base station that the embodiment of the invention provides, make to have the identical Resource Unit of physical location in the Resource Unit that use each base station in the communication system, thereby make different base station can dispatch identical physical resource as the open loop zone.
From above description, as can be seen, in embodiments of the present invention, by the existing resource mapping process is improved, can be so that each base station uses the physical resource of identical logical resource scheduling identical in the communication system, thereby can guarantee that different base station can dispatch identical physical resource as the open loop zone, make communication system to utilize physical resource better, improve system effectiveness.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (15)

1. a method for mapping resource is characterized in that, comprising:
A plurality of base stations send the superframe head to terminal in the communication system, wherein, carry the indication information that the user mode in open loop zone is supported in indication in the described superframe head;
The resource mapping is carried out according to described indication information in described a plurality of base station, makes to have the logical resource unit that aligns between described a plurality of base stations.
2. method according to claim 1 is characterized in that, described user mode comprises:
Enable or forbid; Perhaps, described user mode comprises: open or close.
3. method according to claim 1, it is characterized in that, carry one of in the following way described indication information: carry out mask by in the superframe head, comprising 1 binary bits, CRC by particular sequence and main superframe head, CRC by particular sequence and auxilliary superframe head carries out mask.
4. method according to claim 1, it is characterized in that, described method also comprises: described base station is to described terminal transmitting system configuration messages, wherein, carry indication in the described system configuration message as the type of the described logical resource unit of open loop zone use and/or the identification information of quantity.
5. method according to claim 1 is characterized in that, the logical resource unit of described alignment is meant the logical resource unit that physical location is identical.
6. method according to claim 1 is characterized in that, described indication information indication supports the user mode in open loop zone to comprise: described indication information indication not carrying out in the resource mapping process distribution of continuous resource unit/distributed resource unit; Described a plurality of base station is carried out the resource mapping and comprised: described a plurality of base stations are in the resource mapping process, in the branch timing of carrying out continuous resource unit/distributed resource unit, with the little band in the frequency partition all as the distributed resource unit, with the subband in the frequency partition all as the continuous resource unit.
7. method according to claim 6 is characterized in that, described indication information specifically indicates whether carry out the distribution of continuous resource unit/distributed resource unit in all frequency partition in described resource mapping process; Described a plurality of base station is in described resource mapping process, in the branch timing of carrying out continuous resource unit/distributed resource unit, with the little band in all frequency partition all as the distributed resource unit, with the subband in all frequency partition all as the continuous resource unit.
8. method according to claim 6 is characterized in that, described indication information specifically indicates whether carry out the distribution of continuous resource unit/distributed resource unit at the preset frequency subregion in described resource mapping process; Described a plurality of base station is in described resource mapping process, in the branch timing of carrying out continuous resource unit/distributed resource unit, with the little band in the described preset frequency subregion all as the distributed resource unit, with the subband in the described preset frequency subregion all as the continuous resource unit.
9. method according to claim 1, it is characterized in that described indication information indication supports the user mode in open loop zone to comprise: described indication information indicates described a plurality of base station to adopt identical predefined parameter to carry out the distribution of continuous resource unit/distributed resource unit; Described a plurality of base station is carried out the resource mapping and comprised: described a plurality of base stations in the branch timing of carrying out continuous resource unit/distributed resource unit, adopt identical described predefined parameter to carry out the distribution of continuous resource unit/distributed resource unit in the resource mapping process.
10. method according to claim 9 is characterized in that, the described a plurality of base stations of the concrete indication of described indication information all adopt identical described predefined parameter to carry out the distribution of continuous resource unit/distributed resource unit in all frequency partition; Described a plurality of base station all adopts identical described predefined parameter to carry out the distribution of continuous resource unit/distributed resource unit in all frequency partition in the resource mapping process.
11. method according to claim 9 is characterized in that, the described a plurality of base stations of the concrete indication of described indication information adopt identical described predefined parameter to carry out the distribution of continuous resource unit/distributed resource unit at the preset frequency subregion; Described a plurality of base station all adopts identical described predefined parameter to carry out the distribution of continuous resource unit/distributed resource unit at described preset frequency subregion in the resource mapping process.
12., it is characterized in that described predefined parameter comprises: sub stituent and/or displacement seed according to each described method in the claim 9 to 11.
13. according to each described method in the claim 5 to 7, it is characterized in that, for ascending resource mapping, described predefined parameter comprise following one of arbitrarily or combination: sub stituent, displacement seed, UCAS SB0, UCAS MB0And UCAS iFor downlink resource mapping, described predefined parameter comprise following one of at least: sub stituent, displacement seed, DCAS SB0, DCAS MB0And DCAS i
14. according to each described method in the claim 1 to 11, it is characterized in that, described base station in sending to the system configuration message of described terminal or described superframe head comprise the indication signaling that is used to indicate the described logical resource unit that uses as the open loop zone.
15. a base station is characterized in that, comprising:
Sending module is used for sending the superframe head to terminal, wherein, carries the indication information that the user mode in open loop zone is supported in indication in the described superframe head;
Mapping block is used for carrying out resource mapping according to described indication information, makes the logical resource unit that existence is alignd between other base station in described base station and the communication system.
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