CN102387566B - Method and base station (BS) for transmitting SI (system information) based on carrier indication in public search intervals - Google Patents
Method and base station (BS) for transmitting SI (system information) based on carrier indication in public search intervals Download PDFInfo
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Abstract
The invention relates to a method and a base station (BS) for transmitting SI (system information) based on carrier indication in public search intervals. The method comprises the following steps: according to preset priority of constituent carrier, grouping REs (resource elements) occupied by the constituent carrier of UE (user equipment) by the BS; receiving the interference condition of the RE groups of the constituent carrier fed back by the UE; according to the interference condition of the RE groups, setting a comparison threshold for correlation among a CIF (carrier indicator field), the constituent carrier and the SI; and according to the interference condition of the RE groups and the comparison threshold for correlation, indicating the UE to transmit the CIF and the SI by time multiplexing and other modes for a strong interference part, and indicating the UE to transmit the CIF and the SI by a control channel scrambling mode for a weak interference part. The method and the BS have the advantages that the quantity of resource in the public search intervals occupied by the scrambled CIF and SI is obviously reduced on the premise of ensuring effective coverage of a control channel and the SI, and meanwhile the blind decoding number is lowered and the system reliability is improved.
Description
Technical field
The present invention relates to field of wireless communications networks, relate in particular to method and the base station of common search interval intercarrier indication transmission SI in a kind of heterogeneous network.
Background technology
In NGBW communication network, how under the bandwidth in current wireless communication system, supporting larger bandwidth to become improves a key factor of inter-cell user terminal (User Equipment, UE) throughput and user terminal average throughput and is faced with formidable challenges.
At present, Long Term Evolution (Long Term Evolution in third generation partner program, LTE) in, all propose to adopt the mode of carrier aggregation, in current wireless communication system, effectively support larger bandwidth, to meet the demand to indexs such as throughput, peak rates in new generation of wireless standard.Carrier aggregation is in future broadband wireless communication systems, to support the key technology of larger bandwidth, by the carrier wave to different, carry out polymerization, form the carrier wave of larger bandwidth, in bandwidth after polymerization, support to have the user terminal of stronger ability, for example,, LTE-Advanced(enhancement mode Long Term Evolution), there is the bandwidth over 100MHz.
Thus, carrier wave indicator field (Carrier Indicator Field, CIF) is used in carrier aggregation, especially in heterogeneous network with the indication across component carrier in carrier dispatching of the network of hierarchy.The use of carrier wave indicator field, makes to disturb and can in Resource Block (Resource Block, RB) granularity, be cooperated, and meanwhile, the interference in control channel can be based on being cooperated across carrier wave indication of being enhanced in systematic function in component carrier granularity.
According to the discussion of 3GPPLTE-Advanced, system information (System Information, SI) will on the component carrier at each backward compatibility and non-backward compatible, be passed, therefore, the component carrier of each backward compatibility and non-backward compatible will have the system information of himself.And each component carrier has the system information that independently control channel indexed resource piece transmits.In order effectively to reduce the interference with the control channel of carrier wave indicator field, conventionally meeting and Radio Network Temporary Identifier (Radio Network Temporary Identity, RNTI) scrambling, its objective is and make interference signal randomization, specific practice is: at transmitting terminal, by cell-specific scrambler sequence, carry out scrambling, receiving terminal carries out descrambling again, only have the user terminal in this community could be according to the sign (Identifier of this community, ID) the cell-specific scrambler sequence forming, the information receiving in Zhe community is carried out to descrambling, can reduce to a certain extent to face the interference of minizone like this.But, can cause the capacity problem after CIF and control channel scrambling in common search interval, can cause the increase of blind decoding quantity simultaneously.
Summary of the invention
Method and base station that main purpose of the present invention is to provide the indication of common search interval intercarrier in a kind of heterogeneous network to send SI, to solve the capacity problem after CIF and control channel scrambling in common search interval, the blind decoding number in reduction common search interval.
In order to achieve the above object, the present invention proposes the method that the intercarrier indication of a kind of common search interval sends SI, comprising:
Base station is according to the priority of the component carrier setting in advance, and the RE that the component carrier of UE is taken divides into groups;
Receive the disturbance regime of each RE grouping of the described component carrier of described UE feedback;
According to the disturbance regime of each RE grouping, the correlation comparison threshold value between CIF, component carrier and SI is set;
According to disturbance regime and the described correlation comparison threshold value of each RE grouping, indication UE sends with the mode of interference coordination or the mode of employing and control channel scrambling CIF and the SI being carried on RE.
Preferably, described according to disturbance regime and the described correlation comparison threshold value of each RE grouping, indication UE sends with the mode of interference coordination or the mode of employing and control channel scrambling the CIF that is carried on RE and the step of SI comprises:
Whether the disturbance regime that judges RE grouping is greater than described correlation comparison threshold value; If so,
Indication UE in base station sends in the mode of interference coordination CIF and the SI being carried on respective packets RE; Otherwise
Base station indication UE adopts with the mode of control channel scrambling and sends CIF and the SI being carried on respective packets RE.
Preferably, indication UE in described base station sends in the mode of interference coordination the CIF that is carried on respective packets RE and the step of SI comprises:
According to the correlation between CIF, component carrier and SI, it is the first predetermined value that CIF is set;
RE corresponding with priority on each component carrier is set and carries identical SI;
By one of them component carrier, the SI corresponding with priority determines the SI on other component carriers;
Indication UE sends CIF and the SI being carried on respective packets RE in time-multiplexed mode.
Preferably, the CIF that indication UE in described base station adopts mode with control channel scrambling to send to be carried on respective packets RE and the step of SI comprise:
According to the disturbance regime of described each RE grouping, calculate the average interference of described each RE grouping;
Judge whether the disturbance regime of RE grouping is greater than the average interference of described each RE grouping;
When the disturbance regime of RE grouping is greater than the average interference of described each RE grouping, according to the correlation between CIF, component carrier and SI, it is the second predetermined value that CIF is set;
Arrange on the component carrier corresponding with the value of described CIF, disturbance regime is lower than the RE carrying SI of described correlation comparison threshold value, and other RE do not carry SI;
RE corresponding with priority on each component carrier is set and carries identical SI;
By the SI that wherein a component carrier is corresponding with priority, determine the SI on other component carriers;
Indication UE adopts with the mode of control channel scrambling and sends CIF and the SI being carried on respective packets RE.
Preferably, describedly RE corresponding with priority on each component carrier be set also comprise before carrying the step of identical SI:
When the disturbance regime of RE grouping is less than the average interference of described each RE grouping, according to the correlation between CIF, component carrier and SI, it is the 3rd predetermined value that CIF is set;
Arrange on the component carrier corresponding with the value of described CIF, disturbance regime is lower than the RE carrying SI of described correlation comparison threshold value, and other RE carry SI by redundancy or time-multiplexed mode.
The present invention also proposes the base station that the intercarrier indication of a kind of common search interval sends SI, comprising:
Grouping module, the priority of the component carrier setting in advance for basis, the RE that the component carrier of UE is taken divides into groups;
Receiver module, the disturbance regime dividing into groups for receiving each RE of the described component carrier of described UE feedback;
Module is set, for the correlation comparison threshold value between CIF, component carrier and SI being set according to the disturbance regime of each RE grouping;
Indication sending module, for according to disturbance regime and the described correlation comparison threshold value of each RE grouping, indicates UE to send with the mode of interference coordination or the mode of employing and control channel scrambling CIF and the SI being carried on RE.
Preferably, described indication sending module comprises:
Judging unit, for judging whether the disturbance regime of RE grouping is greater than described correlation comparison threshold value;
Indication transmitting element, while being greater than described correlation comparison threshold value for the disturbance regime when RE grouping, indication UE sends in the mode of interference coordination CIF and the SI being carried on respective packets RE; Otherwise indication UE adopts with the mode of control channel scrambling and sends CIF and the SI being carried on respective packets RE.
Preferably, described indication transmitting element comprises:
Subelement is set, and for according to the correlation between CIF, component carrier and SI, it is the first predetermined value that CIF is set; And RE corresponding with priority on each component carrier is set carries identical SI;
Determine subelement, for determining the SI on other component carriers by one of them component carrier SI corresponding with priority;
Indication sends subelement, is used to indicate UE and in time-multiplexed mode, sends CIF and the SI being carried on respective packets RE.
Preferably, described indication transmitting element also comprises computation subunit and judgment sub-unit, wherein:
Described computation subunit, for calculating the average interference of described each RE grouping according to the disturbance regime of described each RE grouping;
Described judgment sub-unit, for judging whether the disturbance regime of RE grouping is greater than the average interference of described each RE grouping;
The described subelement that arranges, while being also greater than the average interference of described each RE grouping for the disturbance regime when RE grouping, according to the correlation between CIF, component carrier and SI, it is the second predetermined value that CIF is set; Arrange on the component carrier corresponding with the value of described CIF, disturbance regime is lower than the RE carrying SI of described correlation comparison threshold value, and other RE do not carry SI; And RE corresponding with priority on each component carrier is set carries identical SI;
Described definite subelement, also determines the SI on other component carriers for the SI by wherein a component carrier is corresponding with priority;
Described indication sends subelement, is also used to indicate UE employing and sends with the mode of control channel scrambling CIF and the SI being carried on respective packets RE.
Preferably, the described subelement that arranges, while being also less than the average interference of described each RE grouping for the disturbance regime when RE grouping, according to the correlation between CIF, component carrier and SI, it is the 3rd predetermined value that CIF is set; And on the setting component carrier corresponding with the value of described CIF, disturbance regime is lower than the RE carrying SI of described correlation comparison threshold value, other RE carry SI by redundancy or time-multiplexed mode.
In a kind of heterogeneous network that the present invention proposes, intercarrier indication in common search interval sends method and the base station of SI, by the mode of the grouping of component carrier/Resource Block and priority comparison threshold value, to strongly disturbing part, adopt the mode such as time-multiplexed to send CIF and SI, to weak jamming part, adopt with the mode of control channel scrambling and send CIF and SI, in the situation that guaranteeing that control channel and SI information effectively cover, the resource quantity at the common search interval that significantly CIF after reduction scrambling and SI take, reduce blind decoding quantity simultaneously, and improve system reliability.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that the intercarrier indication of common search of the present invention interval sends method one embodiment of SI;
Fig. 2 is that intercarrier indication in common search of the present invention interval sends in method one embodiment of SI according to disturbance regime and the correlation comparison threshold value of each RE grouping, and indication UE sends the CIF that is carried on RE and the schematic flow sheet of SI with the mode of interference coordination or the mode of employing and control channel scrambling;
Fig. 3 is that intercarrier indication in common search of the present invention interval sends indication UE in base station in method one embodiment of SI and sends the CIF that is carried on respective packets RE and the schematic flow sheet of SI in the mode of interference coordination;
Fig. 4 is that intercarrier indication in common search of the present invention interval sends CIF that base station indication UE in method one embodiment of SI adopts mode with control channel scrambling to send to be carried on respective packets RE and the schematic flow sheet of SI;
Fig. 5 is the structural representation that the intercarrier indication of common search of the present invention interval sends base station one embodiment of SI;
Fig. 6 is that common search of the present invention interval intercarrier is indicated the structural representation of indicating sending module in base station one embodiment that sends SI;
Fig. 7 is that common search of the present invention interval intercarrier is indicated a kind of structural representation of indicating transmitting element in base station one embodiment that sends SI;
Fig. 8 is that common search of the present invention interval intercarrier is indicated the another kind of structural representation of indicating transmitting element in base station one embodiment that sends SI.
In order to make technical scheme of the present invention clearer, clear, below in conjunction with accompanying drawing, be described in further detail.
Embodiment
Solution for embodiment of the invention is mainly: by the mode of the grouping of component carrier/Resource Block and priority comparison threshold value, to strongly disturbing part, adopt the mode such as time-multiplexed to send CIF and SI to improve its reliability, to weak jamming part, adopt with the mode of control channel scrambling and send CIF and SI, effect reduces in common search interval resource quantity and the blind decoding quantity at the common search interval that after scrambling, CIF and SI take.
As shown in Figure 1, one embodiment of the invention proposes the method that the intercarrier indication of a kind of common search interval sends SI, comprising:
Step S1, base station is according to the priority of the component carrier setting in advance, and the RE that the component carrier of UE is taken divides into groups;
Wherein, the priority of component carrier sets in advance according to the disturbance regime of UE.
Wherein, RE(ResourceElement, resource particle) with the pass of RB be:
The physical layer resources structure of LTE of take is example, and 10M bandwidth comprises 50 RB; A Resource Block is a RB, for the general Cyclic Prefix of NormalCP(), a RB comprises 12 subcarriers and 7 OFDM(Orthogonal Frequency Division Multiplexing, OFDM) symbol.And subcarrier and one by one OFDM symbol form a RE, a RB comprises 84 RE.
Step S2, the disturbance regime of each RE grouping of the component carrier of reception UE feedback;
UE constantly measures the disturbance regime of each RE grouping of component carrier, and reports base station.
Step S3, arranges the correlation comparison threshold value between CIF, component carrier and SI according to the disturbance regime of each RE grouping;
Step S4, according to disturbance regime and the correlation comparison threshold value of each RE grouping, indication UE sends with the mode of interference coordination or the mode of employing and control channel scrambling CIF and the SI being carried on RE.
Base station receives after the disturbance regime of UE feedback, according to the disturbance regime of UE, the correlation comparison threshold value between CIF, component carrier and SI is set, and sends CIF and the SI of the upper carrying of corresponding RE for dividing into groups.
When grouping sends, the disturbance regime of base station contrast UE feedback and the correlation comparison threshold value of this setting, be less than the RE grouping of correlation comparison threshold value for disturbance regime, and indication UE adopts CIF and the SI that sends the upper carrying of corresponding RE with the mode of control channel scrambling; For disturbance regime, be greater than the RE grouping of correlation comparison threshold value, indication UE adopts the mode of interference coordination to send CIF and the SI of the upper carrying of corresponding RE.
When the CIF that adopts specific mode to send to carry on corresponding RE at indication UE and SI, base station need to arrange the associated of carrying CIF and SI and component carrier, the connection indicating device of being specifically open to the custom is realized, situation about sending for scrambling mode, the correlation of indicating the SI on whole component carrier/RE that UE uses by CIF; For the situation that adopts interference coordination mode to send, by the mode such as time-multiplexed, send CIF and SI.
Wherein, base station arranges the associated indicating device of CIF and SI and component carrier, comprises interrelational form controller, correlation controller and multiplex mode selector, for determining CIF, the SI of UE and the transmission relation of component carrier.
Particularly, as shown in Figure 2, above-mentioned steps S4 comprises:
Step S41, judges whether the disturbance regime of RE grouping is greater than correlation comparison threshold value; If so, enter step S42; Otherwise, enter step S43;
Step S42, indication UE in base station sends in the mode of interference coordination CIF and the SI being carried on respective packets RE;
Step S43, base station indication UE adopts with the mode of control channel scrambling and sends CIF and the SI being carried on respective packets RE.
As shown in Figure 3, above-mentioned steps S42 comprises:
Step S421, according to the correlation between CIF, component carrier and SI, it is the first predetermined value that CIF is set;
Step S422, arranges RE corresponding with priority on each component carrier and carries identical SI;
Step S423, by one of them component carrier, the SI corresponding with priority determines the SI on other component carriers;
Step S424, indication UE sends CIF and the SI being carried on respective packets RE in time-multiplexed mode.
As shown in Figure 4, above-mentioned steps S43 comprises:
Step S431, calculates the average interference of each RE grouping according to the disturbance regime of each RE grouping;
Step S432, judges whether the disturbance regime of RE grouping is greater than the average interference of each RE grouping; If so, enter step S433; Otherwise, enter step S438;
Step S433, according to the correlation between CIF, component carrier and SI, it is the second predetermined value that CIF is set;
Step S434, arranges on the component carrier corresponding with the value of CIF, and disturbance regime is lower than the RE carrying SI of correlation comparison threshold value, and other RE do not carry SI;
Step S435, arranges RE corresponding with priority on each component carrier and carries identical SI;
Step S436, determines the SI on other component carriers by the SI that wherein a component carrier is corresponding with priority;
Step S437, indication UE adopts with the mode of control channel scrambling and sends CIF and the SI being carried on respective packets RE.
Step S438, according to the correlation between CIF, component carrier and SI, it is the 3rd predetermined value that CIF is set;
Step S439, arranges on the component carrier corresponding with the value of CIF, and disturbance regime is lower than the RE carrying SI of correlation comparison threshold value, and other RE carry SI by redundancy or time-multiplexed mode.
The method of indicating UE to send SI to the present embodiment by CIF with instantiation is below elaborated:
Suppose that user side (UE) has been used 2 component carriers in carrier aggregation, CC1 and CC2, resource particle on each component carrier (RE) quantity is respectively 20 and 40, base station is divided into 5 priority according to disturbance state by CIF and SI, PL1, PL2, PL3, PL4, PL5, and 4 correlation comparison threshold value are set, and TV1, TV2, TV3, TV4, component carrier/Resource Block is grouped as follows shown in table 1:
Table 1
Wherein, in the CIF of component carrier CC1 and CC2 and the indication of SI information, different modes can be set and show the correlation between CIF, component carrier and SI.Suppose, CIF is 2bit, and the correlation between CIF, component carrier and SI shows below shown in table 2:
Table 2
Wherein, under " 01 " and " 10 " state, can, by guaranteeing the reliability of the SI of the upper carrying of RE, reduce probability again.
Flow process and method that in this example, associated indicating device and CIF send and carrier wave is indicated are as shown in table 3 below:
Table 3
According to above-mentioned table 1, table 2 and table 3, the concrete implementation step of this example is as follows:
Step 101:BS divides into groups to 2 of UE RE that component carrier takies according to component carrier/Resource Block (RE) priority packet setting in advance;
Step 102:UE feeds back the disturbance regime of component carrier/RE grouping to BS;
Step 103:BS calculates the average interference of component carrier/RE grouping according to disturbance regime;
Step 104:BS arranges CIF, component carrier and SI correlation comparison threshold value;
Step 105:BS, by the interference of component carrier/RE grouping and the contrast of correlation comparison threshold value, when component carrier/RE grouping interference is greater than comparison threshold value, forwards step 06 to, otherwise forwards step 111 to;
It is 11 that step 106:BS arranges CIF;
It is the identical SI of the upper carrying of the upper RB corresponding with priority of CC1, CC2 that step 107:BS arranges SI;
Step 108:BS arranges UE and by the CC1 SI corresponding with priority, determines the SI of CC2;
Interrelational form controller is set step 109:BS and correlation controller is 11, and send CIF and SI by the mode such as time-multiplexed;
It is 1 that step 110:BS arranges multiplex mode selector, and by adopting the mode of interference coordination to send;
Step 111:BS, by the interference of component carrier/RE grouping and average interference contrast, when the interference of component carrier/RE grouping is greater than to average interference, forwards step 112 to, otherwise forwards step 114 to;
It is 01 that step 112:BS arranges CIF;
Step 113:BS arranges SI for below definite threshold value, that is, disturb lower than the upper carrying of the RB under definite threshold SI, and other RB do not carry SI; And enter step S116;
It is 10 that step 114:BS arranges CIF;
Step 115:BS is arranged on below definite threshold value, that is, disturb lower than the upper carrying of the RB under definite threshold SI, and other RB carry SI by redundancy or the mode such as time-multiplexed;
Interrelational form controller is set step 116:BS and correlation controller is the identical SI of the upper carrying of the upper RB corresponding with priority of 00, CC1, CC2;
Step 117:BS arranges UE and by the CC1 SI corresponding with priority, determines the SI of CC2;
It is 0 that step 118:BS arranges multiplex mode selector, adopts with the mode of control channel scrambling and sends;
Step 119:BS sends to UE by CIF, SI, interrelational form controller, correlation controller, multiplex mode selector;
Step 120:UE receives also demodulation CIF, SI, interrelational form controller, correlation controller, multiplex mode selector;
Step 121:UE takies component carrier and RE according to the mode of BS appointment, and carries out up link transmission according to definite send mode;
Compared to existing technology, the present embodiment is by the mode of the grouping of component carrier/Resource Block and priority comparison threshold value, to strongly disturbing part, adopt the mode such as time-multiplexed to send CIF and SI to improve its reliability, and solved the problem that in common search interval, the capacity problem after scrambling and blind decoding quantity increase; And to weak jamming part, adopt with the mode of control channel scrambling and send CIF and SI, in the situation that guaranteeing that control channel and SI information effectively cover, significantly reduce the resource quantity at the common search interval that CIF after scrambling and SI take, reduce blind decoding quantity simultaneously.
In addition, the present embodiment is the associated indicating device with SI and component carrier by CIF, base station only need to obtain CIF and the SI carrying on all component carriers of UE by CIF, SI on one or more component carriers, in the situation that reliability is improved, in common search interval, blind decoding is attempted number and significantly reduction of blocking probability.
As shown in Figure 5, one embodiment of the invention proposes the base station that intercarrier indication in a kind of common search interval sends SI, comprising: grouping module 5, receiver module 6, module 7 and indication sending module 8 are set, wherein:
Wherein, the priority of component carrier sets in advance according to the disturbance regime of UE.The receiver module 6 of base station receives after the disturbance regime of UE feedback, module 7 is set and according to the disturbance regime of UE, the correlation comparison threshold value between CIF, component carrier and SI is set, and is used to indicate CIF and SI that sending module 8 groupings send the upper carrying of corresponding RE.
When the CIF that indication sending module 8 adopts specific mode to send to carry on corresponding RE at indication UE and SI, base station need to arrange the associated of carrying CIF and SI and component carrier, the connection indicating device of being specifically open to the custom is realized, situation about sending for scrambling mode, the correlation of indicating the SI on whole component carrier/RE that UE uses by CIF; For the situation that adopts interference coordination mode to send, by the mode such as time-multiplexed, send CIF and SI.
Wherein, base station arranges the associated indicating device of CIF and SI and component carrier, comprises interrelational form controller, correlation controller and multiplex mode selector, for determining CIF, the SI of UE and the transmission relation of component carrier.
In specific implementation process, as shown in Figure 6, above-mentioned indication sending module 8 comprises: judging unit 81 and indication transmitting element 82, wherein:
Judging unit 81, for judging whether the disturbance regime of RE grouping is greater than described correlation comparison threshold value;
As shown in Figure 7, as a kind of execution mode, above-mentioned indication transmitting element 82 comprises: subelement 821 is set, determines that subelement 822 and indication send subelement 823, wherein:
Determine subelement 822, for determining the SI on other component carriers by one of them component carrier SI corresponding with priority;
Indication sends subelement 823, is used to indicate UE and in time-multiplexed mode, sends CIF and the SI being carried on respective packets RE.
As shown in Figure 8, as another kind of execution mode, above-mentioned indication transmitting element is above-mentioned on the basis of above-mentioned Fig. 7 also to be comprised: computation subunit 819 and judgment sub-unit 820, wherein:
Computation subunit 819, for calculating the average interference of each RE grouping according to the disturbance regime of each RE grouping;
Judgment sub-unit 820, for judging whether the disturbance regime of RE grouping is greater than the average interference of each RE grouping;
Determine subelement 822, also for the SI by wherein a component carrier is corresponding with priority, determine the SI on other component carriers;
Indication sends subelement 823, is also used to indicate UE employing and sends with the mode of control channel scrambling CIF and the SI being carried on respective packets RE.
Further, subelement 821 is set, while being also less than the average interference of each RE grouping for the disturbance regime when RE grouping, according to the correlation between CIF, component carrier and SI, it is the 3rd predetermined value that CIF is set; And on the setting component carrier corresponding with the value of CIF, disturbance regime is lower than the RE carrying SI of correlation comparison threshold value, other RE carry SI by redundancy or time-multiplexed mode.
The present embodiment indicates UE to send the basic principle of SI by CIF, please refer to above-described embodiment, does not repeat them here.
In embodiment of the present invention heterogeneous network, intercarrier indication in common search interval sends method and the base station of SI, by the mode of the grouping of component carrier/Resource Block and priority comparison threshold value, to strongly disturbing part, adopt the mode such as time-multiplexed to send CIF and SI, to weak jamming part, adopt with the mode of control channel scrambling and send CIF and SI, in the situation that guaranteeing that control channel and SI information effectively cover, the resource quantity at the common search interval that significantly CIF after reduction scrambling and SI take, reduce blind decoding quantity simultaneously, and improve system reliability.
The foregoing is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. a method of common search interval intercarrier indication transmitting system information SI, is characterized in that, comprising:
Base station is according to the priority of the component carrier setting in advance, and the resource particle RE that the component carrier of user terminal UE is taken divides into groups;
Receive the disturbance regime of each RE grouping of the described component carrier of described UE feedback;
According to the disturbance regime of each RE grouping, the correlation comparison threshold value between carrier wave indicator field CIF, component carrier and SI is set;
According to disturbance regime and the described correlation comparison threshold value of each RE grouping, indication UE sends with the mode of interference coordination or the mode of employing and control channel scrambling CIF and the SI being carried on RE; Concrete threshold value comprises:
Whether the disturbance regime that judges RE grouping is greater than described correlation comparison threshold value; If so,
Indication UE in base station sends in the mode of interference coordination CIF and the SI being carried on respective packets RE; Otherwise
Base station indication UE adopts with the mode of control channel scrambling and sends CIF and the SI being carried on respective packets RE.
2. method according to claim 1, is characterized in that, indication UE in described base station sends in the mode of interference coordination the CIF that is carried on respective packets RE and the step of SI comprises:
According to the correlation between CIF, component carrier and SI, it is the first predetermined value that CIF is set;
RE corresponding with priority on each component carrier is set and carries identical SI;
By one of them component carrier, the SI corresponding with priority determines the SI on other component carriers;
Indication UE sends CIF and the SI being carried on respective packets RE in time-multiplexed mode.
3. method according to claim 1 and 2, is characterized in that, the CIF that described base station indication UE adopts the mode with control channel scrambling to send to be carried on respective packets RE and the step of SI comprise:
According to the disturbance regime of described each RE grouping, calculate the average interference of described each RE grouping;
Judge whether the disturbance regime of RE grouping is greater than the average interference of described each RE grouping;
When the disturbance regime of RE grouping is greater than the average interference of described each RE grouping, according to the correlation between CIF, component carrier and SI, it is the second predetermined value that CIF is set;
Arrange on the component carrier corresponding with the value of described CIF, disturbance regime is lower than the RE carrying SI of described correlation comparison threshold value, and other RE do not carry SI;
RE corresponding with priority on each component carrier is set and carries identical SI;
By the SI that wherein a component carrier is corresponding with priority, determine the SI on other component carriers;
Indication UE adopts with the mode of control channel scrambling and sends CIF and the SI being carried on respective packets RE.
4. method according to claim 3, is characterized in that, describedly RE corresponding with priority on each component carrier is set also comprises before carrying the step of identical SI:
When the disturbance regime of RE grouping is less than the average interference of described each RE grouping, according to the correlation between CIF, component carrier and SI, it is the 3rd predetermined value that CIF is set;
Arrange on the component carrier corresponding with the value of described CIF, disturbance regime is lower than the RE carrying SI of described correlation comparison threshold value, and other RE carry SI by redundancy or time-multiplexed mode.
5. intercarrier indication in common search interval sends a base station of SI, it is characterized in that, comprising:
Grouping module, the priority of the component carrier setting in advance for basis, the RE that the component carrier of UE is taken divides into groups;
Receiver module, the disturbance regime dividing into groups for receiving each RE of the described component carrier of described UE feedback;
Module is set, for the correlation comparison threshold value between CIF, component carrier and SI being set according to the disturbance regime of each RE grouping;
Indication sending module, for according to disturbance regime and the described correlation comparison threshold value of each RE grouping, indicates UE to send with the mode of interference coordination or the mode of employing and control channel scrambling CIF and the SI being carried on RE; Described indication sending module comprises:
Judging unit, for judging whether the disturbance regime of RE grouping is greater than described correlation comparison threshold value;
Indication transmitting element, while being greater than described correlation comparison threshold value for the disturbance regime when RE grouping, indication UE sends in the mode of interference coordination CIF and the SI being carried on respective packets RE; Otherwise indication UE adopts with the mode of control channel scrambling and sends CIF and the SI being carried on respective packets RE.
6. base station according to claim 5, is characterized in that, described indication transmitting element comprises:
Subelement is set, and for according to the correlation between CIF, component carrier and SI, it is the first predetermined value that CIF is set; And RE corresponding with priority on each component carrier is set carries identical SI;
Determine subelement, for determining the SI on other component carriers by one of them component carrier SI corresponding with priority;
Indication sends subelement, is used to indicate UE and in time-multiplexed mode, sends CIF and the SI being carried on respective packets RE.
7. base station according to claim 6, is characterized in that, described indication transmitting element also comprises computation subunit and judgment sub-unit, wherein:
Described computation subunit, for calculating the average interference of described each RE grouping according to the disturbance regime of described each RE grouping;
Described judgment sub-unit, for judging whether the disturbance regime of RE grouping is greater than the average interference of described each RE grouping;
The described subelement that arranges, while being also greater than the average interference of described each RE grouping for the disturbance regime when RE grouping, according to the correlation between CIF, component carrier and SI, it is the second predetermined value that CIF is set; Arrange on the component carrier corresponding with the value of described CIF, disturbance regime is lower than the RE carrying SI of described correlation comparison threshold value, and other RE do not carry SI; And RE corresponding with priority on each component carrier is set carries identical SI;
Described definite subelement, also determines the SI on other component carriers for the SI by wherein a component carrier is corresponding with priority;
Described indication sends subelement, is also used to indicate UE employing and sends with the mode of control channel scrambling CIF and the SI being carried on respective packets RE.
8. according to the base station described in claim 6 or 7, it is characterized in that,
The described subelement that arranges, while being also less than the average interference of described each RE grouping for the disturbance regime when RE grouping, according to the correlation between CIF, component carrier and SI, it is the 3rd predetermined value that CIF is set; And on the setting component carrier corresponding with the value of described CIF, disturbance regime is lower than the RE carrying SI of described correlation comparison threshold value, other RE carry SI by redundancy or time-multiplexed mode.
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| CN102065554A (en) * | 2011-01-06 | 2011-05-18 | 中兴通讯股份有限公司 | Resource scheduling method and base station |
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