CN102958064A - Method, system and device for reducing interference in carrier aggregation system - Google Patents
Method, system and device for reducing interference in carrier aggregation system Download PDFInfo
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Abstract
本发明公开了一种载波聚合系统中降低干扰的方法、系统及装置，该方法包括：基站配置载波聚合模式下的终端共存需求信息；在系统广播消息中增加共存需求字段携带终端共存需求信息，向所有终端广播所述系统广播消息；或在载波聚合专用信令中增加共存需求字段携带终端共存需求信息，并向载波聚合的终端发送载波聚合专用信令；以便载波聚合终端根据接收到的所述系统广播消息或载波聚合专用信令中携带的终端共存需求信息，确定满足共存需求时的实际发射功率和/或最大上行可使用资源块数目。简单、方便的实现了降低或消除载波聚合系统中终端之间的干扰。
The invention discloses a method, system and device for reducing interference in a carrier aggregation system. The method includes: base station configuring terminal coexistence requirement information in carrier aggregation mode; adding a coexistence requirement field in a system broadcast message to carry terminal coexistence requirement information, Broadcast the system broadcast message to all terminals; or add a coexistence requirement field in the carrier aggregation dedicated signaling to carry the terminal coexistence requirement information, and send the carrier aggregation dedicated signaling to the terminal of the carrier aggregation; so that the carrier aggregation terminal according to the received The terminal coexistence requirement information carried in the above-mentioned system broadcast message or carrier aggregation dedicated signaling determines the actual transmit power and/or the maximum number of available uplink resource blocks when the coexistence requirement is met. Simple and convenient implementation reduces or eliminates interference between terminals in a carrier aggregation system.
Description
Technical field
The present invention relates to wireless communication technology field, reduce the method, system and device that disturb in espespecially a kind of carrier aggregation system.
Background technology
2.6GHz be Long Term Evolution (Long Term Evolution, LTE) the important frequency range of system's deployment, as shown in Figure 1, the main flow programme of 3GPP is that 2500-2570MHz/2620-2690MHz is planned to Frequency Division Duplexing (FDD) (Frequency Division Duplexing, FDD) system, frequency range are numbered Band 7, and 2570-2620MHz is planned to time division duplex (Time Division Duplexing, TDD) system, frequency range are numbered Band 38.
As shown in Figure 1, when FDD system and TDD coexistence of systems, when base station next-door neighbour arranged, the interference type that may exist comprised: the interference between FDD base station (BS) and TDD base station (BS), between FDD terminal (UE) and the TDD terminal (UE), between FDD base station and the TDD terminal, between FDD terminal and the TDD base station; Find by analytical test, general interference meeting is between FDD base station and the TDD base station, produce between FDD terminal and the TDD terminal.
For the interference between the base station; usually adopt reservation boundary belt and/or site engineering to solve; for the interference between the terminal; the existing Rel-8/Rel-9 system that does not adopt carrier aggregation technology; because the bandwidth of supporting is smaller; generally can support the bandwidth of 5MHz, 10MHz, 15MHz and 20MHz, the coexistence that generally just can reach the elimination interference by rational band stray index and transition band are set has required.
And for the Rel-10 system after the introducing carrier aggregation, because the bandwidth of its support will be above 20MHz, for Band 7 or Band 38, the aggregate bandwidth of support may be 20MHz+5MHz, 20MHz+10MHz, 20MHz+15MHz or 20MHz+20MHz.Because support wider transmitted bandwidth, attenuation outside a channel will be more slow, existing interference elimination method for non-carrier aggregation system can't be used for the realization of the interference elimination of carrier aggregation system.
Also there is not well to solve the scheme of the interference between the terminal in the carrier aggregation system in the prior art.
Summary of the invention
The embodiment of the invention provides and reduces the method, system and device that disturb in a kind of carrier aggregation system, in order to solve the problem of disturbing between the terminal in the carrier aggregation system of eliminating.
Reduce the method for disturbing in a kind of carrier aggregation system, comprising:
Terminal coexistence demand information under the base station configuration carrier aggregation mode;
In system broadcast message, increase coexistence demand field carried terminal coexistence demand information, broadcast described system broadcast message to all terminals; Or in the carrier aggregation dedicated signaling, increase coexistence demand field carried terminal coexistence demand information, and send the carrier aggregation dedicated signaling to the terminal of carrier aggregation; So that the terminal coexistence demand information that carries in the described system broadcast message that carrier aggregation terminal basis receives or the carrier aggregation dedicated signaling, the actual emission power when determining to satisfy the coexistence demand and/or the maximum up resource block number that uses.
Reduce the method for disturbing in a kind of carrier aggregation system, comprising:
The carrier aggregation terminal receives the system broadcast message of base station broadcast or receives the carrier aggregation dedicated signaling that the base station sends; Carry the terminal coexistence demand information under the carrier aggregation mode of base station configuration in described system broadcast message or the described carrier aggregation dedicated signaling;
The terminal coexistence demand information that carries in the described system broadcast message that carrier aggregation terminal basis receives or the carrier aggregation dedicated signaling, the actual emission power when determining to satisfy the coexistence demand and/or the maximum up resource block number that uses.
A kind of base station comprises:
Configuration module is used for the terminal coexistence demand information under the configuration carrier aggregation mode;
The instruction generation module is used for increasing coexistence demand field carried terminal coexistence demand information or increase coexistence demand field carried terminal coexistence demand information in the carrier aggregation dedicated signaling in system broadcast message;
Instruction sending module, be used for broadcasting described system broadcast message or sending the carrier aggregation dedicated signaling to the terminal of carrier aggregation to all terminals, so that the terminal coexistence demand information that carries in the described system broadcast message that carrier aggregation terminal basis receives or the carrier aggregation dedicated signaling, the actual emission power when determining to satisfy the coexistence demand and/or the maximum up resource block number that uses.
A kind of carrier aggregation terminal comprises:
The signaling receiver module is used for receiving the system broadcast message of base station broadcast or receives the carrier aggregation dedicated signaling that the base station sends; Carry the terminal coexistence demand information under the carrier aggregation mode of base station configuration in described system broadcast message or the described carrier aggregation dedicated signaling;
Disturb processing module, be used for the terminal coexistence demand information, the actual emission power when determining to satisfy the coexistence demand and/or the maximum up resource block number that uses that carry according to the described system broadcast message that receives or carrier aggregation dedicated signaling.
Reduce the system that disturbs in a kind of carrier aggregation system, comprise above-mentioned base station and above-mentioned carrier aggregation terminal.
Beneficial effect of the present invention is as follows:
Reduce method, system and device method and the device that disturbs in the carrier aggregation system that the embodiment of the invention provides, by the terminal coexistence demand information under the base station configuration carrier aggregation mode; In system broadcast message, increase coexistence demand field carried terminal coexistence demand information, broadcast described system broadcast message to all terminals; Or in the carrier aggregation dedicated signaling, increase coexistence demand field carried terminal coexistence demand information, and send the carrier aggregation dedicated signaling to the terminal of carrier aggregation; So that the carrier aggregation terminal is according to the terminal coexistence demand information that carries in the described system broadcast message that receives or the carrier aggregation dedicated signaling and/or the maximum up resource block number that uses, the actual emission power when determining to satisfy the coexistence demand.The method is carried special terminal coexistence demand information in the carrier aggregation system by system broadcast message or dedicated signaling, can not affect the normal operation of the terminal in the non-carrier aggregation system, can realize eliminating simultaneously the interference between the terminal in the carrier aggregation system.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of a part of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is system architecture and the interference type schematic diagram of FDD and TDD coexistence of systems in the prior art;
Fig. 2 reduces the method flow diagram one that disturbs in the carrier aggregation system in the embodiment of the invention;
Fig. 3 is the principle schematic of the up protection of TDD terminal in the embodiment of the invention;
Fig. 4 reduces the method flow diagram two that disturbs in the carrier aggregation system in the embodiment of the invention;
Fig. 5 reduces the system configuration schematic diagram that disturbs in the carrier aggregation system in the embodiment of the invention;
Fig. 6 is the structural representation of carrier aggregation base station in the embodiment of the invention;
Fig. 7 is the structural representation of carrier aggregation terminal in the embodiment of the invention.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer, clear, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
In the carrier aggregation system, eliminate the interference between the terminal, consider cost and the volume restrictions of terminal, the Out-of-band rejection of radio-frequency filter or duplexer is limited in one's ability, can adopt in the band that reduces next-door neighbour's frequency range transmitting power to realize the required band attenuation requirement that coexists outward.
In the existing Rel-8/rel-9 system, owing to not needing rollback can satisfy the coexistence of systems requirement, but in Rel-10, introduce the carrier aggregation function, support larger transmitted bandwidth after, need to carry out back-off and could satisfy the coexistence of systems index request.Because terminal is mobile, country variant or area are inconsistent to management expectancy, need the define grid signaling to indicate specific terminal coexistence demand.Therefore, need to be Band 7 or the corresponding coexistence signaling of Band 38 definition of Rel-10 carrier aggregation.
Based on this, the embodiment of the invention provides and reduces the method for disturbing in a kind of carrier aggregation system, and the method flow process comprises the steps: as shown in Figure 2
Step S11: the terminal coexistence demand information under the base station configuration carrier aggregation mode.
Extra its demand of terminal coexistence when configuring carrier aggregation, the terminal coexistence demand information that at first configures under the carrier aggregation mode need to be asked in the base station.General base station determines whether to configure terminal coexistence demand information under the carrier aggregation mode according to the residing mode of operation of terminal, concrete, the base station judges whether terminal is operated under the carrier aggregation mode, and whether the frequency range that terminal is supported needs configurating terminal coexistence demand information.When terminal works under carrier aggregation mode and the frequency range of supporting when needing configurating terminal coexistence demand information, configurating terminal coexistence demand information.The frequency range that general terminal is supported is identical with the frequency range that the base station is supported.
Among the above-mentioned steps S11, the terminal coexistence demand information during base station configuration carrier aggregation comprises one of following configuration mode or combination:
(a1) transmitted bandwidth of carrier aggregation terminal and the first corresponding relation of back-off value are determined in the base station, with the first corresponding relation as the coexistence demand information.This configuration mode is determined the rollback performance number of carrier aggregation terminal according to transmitted bandwidth by the carrier aggregation terminal.
(b1) the second corresponding relation of the transmitted bandwidth of carrier aggregation terminal, the actual resource block size that takies and back-off value is determined in the base station, with the second corresponding relation as the coexistence demand information.This mode is determined the back-off value by the carrier aggregation terminal jointly according to transmitted bandwidth and the actual resource block size that takies.
(c1) the 3rd corresponding relation of the transmitted bandwidth of carrier aggregation terminal, the actual resource block size that takies, the actual resource block location that takies and back-off value is determined in the base station, with described the 3rd corresponding relation as the coexistence demand information.
During carrier aggregation terminal adjacent frequency coexistence, back-off is also relevant with the particular location of operating frequency, even the transmitted bandwidth size is identical, takies resource block size identical, because it is different to take the position of Resource Block, corresponding back-off may also have difference.For example, the Resource Block at the center, with take the next-door neighbour be injured that the Resource Block of system requires may be just not identical.
(d1) the base station transmitted bandwidth and maximum up number of resource blocks purpose the 4th corresponding relation that uses of determining the carrier aggregation terminal, with the 4th corresponding relation as the coexistence demand information.
Except the restriction maximum transmission power, also possibility while or the separately number of the maximum up available frequency resources piece of limiting terminal
(e1) the back-off value of carrier aggregation terminal is determined according to the transmitted bandwidth of carrier aggregation terminal in the base station, and back-off value or performance number corresponding to back-off value are encoded as the coexistence demand information.
This configuration mode is determined the back-off value of carrier aggregation terminal according to transmitted bandwidth by the base station, directly indication is to the carrier aggregation terminal; Or each back-off value is arranged the performance number coding of a correspondence, and and the corresponding relation of performance number coding and back-off value is shared in terminal and both sides, base station, then encode performance number and send to terminal and get final product in the base station.
(f1) the back-off value of carrier aggregation terminal is determined according to transmitted bandwidth and the actual resource block size that takies of carrier aggregation terminal in the base station, and back-off value or performance number corresponding to back-off value are encoded as the coexistence demand information.
This configuration mode is determined the back-off value of carrier aggregation terminal according to transmitted bandwidth and the actual resource block size that takies by the base station, indication is to the carrier aggregation terminal; Or each back-off value is arranged the performance number coding of a correspondence, and and the corresponding relation of performance number coding and back-off value is shared in terminal and both sides, base station, then encode performance number and send to terminal and get final product in the base station.
(g1) base station is according to the transmitted bandwidth of carrier aggregation terminal, the actual resource block size that takies and the actual resource block location that takies, determine the back-off value of carrier aggregation terminal, back-off value or performance number corresponding to back-off value are encoded as the coexistence demand information;
(h1) the maximum up number of resources of using is determined according to the transmitted bandwidth of carrier aggregation terminal in the base station, can use number of resources or maximum can use number coding corresponding to number of resources as the coexistence demand information maximum.
Step S12: the base station issues the coexistence demand information by system broadcast message or carrier aggregation dedicated signaling to the carrier aggregation terminal, and the mode that issues comprises:
(1) in system broadcast message, increases coexistence demand field carried terminal coexistence demand information, to all terminal broadcast system broadcasts.
Specifically can be at host system message block (Master Information Block, MIB) or system information block (System Information Block, SIB) increase coexistence demand information field in the system information block type field, carried terminal coexistence demand information.
For example; during the FDD terminal of the TDD terminal protection Band 7 of Band 38 during carrier aggregation (frequency range 38); can define an extra carrier polymerization coexistence demand information unit (Additional Carrier Aggregation Coexistence Requirements Information Element) in a certain type of system information block (the System Information Block Typex) field in MIB or SIB; the demand information field that namely coexists, the concrete form of the coexistence demand information field among system broadcast message MIB or the SIB is as shown in table 1 below:
Table 1
Increase the coexistence demand field of the terminal coexistence demand information when carrying carrier aggregation in system broadcast message, this field can not resolved this field for the carrier aggregation terminal even non-carrier aggregation terminal receives system broadcast message yet.And do not need to utilize defined field in the existing system broadcast, so after can not causing non-carrier aggregation terminal to receive system broadcast message, can not identify the problem with parse error.Be that the base station is the terminal coexistence demand information that terminal configuration is applicable to the Rel-10 system, when the terminal of Rel8/Rel9 system receives the system broadcast information of this carried terminal coexistence demand information, can not resolve the relevant field of carried terminal coexistence demand information.
(2) in the carrier aggregation dedicated signaling, increase coexistence demand field carried terminal coexistence demand information, and send the carrier aggregation dedicated signaling to the terminal of carrier aggregation.
Specifically can in special-purpose physical layer configurations information, increase coexistence demand information field carried terminal coexistence demand information.Namely in dedicated signaling, add an information unit (IE), coexistence requirement during the indication carrier wave polymerization, for example, IE of definition in special-purpose physical layer configurations information (Physical Config Dedicated), be the terminal coexistence demand information of extra carrier polymerization coexistence demand (Additional Carrier Aggregation Coexistence Requirements) when coming the indication carrier wave polymerization, the concrete form that carries coexistence demand information field in the special-purpose physical layer configurations information is as shown in table 2 below:
Table 2
Increase the coexistence demand field of the terminal coexistence demand information when carrying carrier aggregation in the carrier aggregation dedicated signaling, this dedicated signaling only has the carrier aggregation terminal to receive and to resolve, and non-carrier aggregation terminal does not receive.This mode does not need to utilize defined field in the existing system broadcast yet, so after can not causing non-carrier aggregation terminal to receive system broadcast message, can not identify the problem with parse error.
Step S13: the terminal coexistence demand information that carries in the system broadcast message that carrier aggregation terminal basis receives or the carrier aggregation dedicated signaling, the actual emission power when determining to satisfy the coexistence demand and/or the maximum up resource block number that uses.
After supporting that the terminal of carrier aggregation receives the terminal coexistence demand information that the base station issues, according to the particular content of terminal coexistence demand information, determine to support the actual emission power of terminal under carrier aggregation scene of carrier aggregation.By changing the value of terminal transmit power, realize the protection to coexistence carrier aggregation terminal, avoid interference the carrier aggregation terminal of coexistence.
Said method, by in system broadcast message or in the carrier aggregation dedicated signaling, increasing coexistence demand field, extra terminal coexistence demand information when indication TDD terminal and FDD terminal coexistence, both can support under the non-carrier aggregation scene, when TDD terminal and FDD terminal coexistence, do not need the situation of corresponding back-off; Also be applicable under carrier aggregation scene, when TDD terminal and FDD terminal coexistence, the actual demand of required power rollback.Wherein, when the terminal in Rel-8, the Rel-9 system receives system broadcast message, not can to increase carry carrier aggregation the time the coexistence demand field of terminal coexistence demand information resolve, and the terminal among the Rel-8, Rel-9 system does not receive the carrier aggregation dedicated signaling; Therefore, can not occur that terminal in Rel-8, the Rel-9 system parses unknown message from the defined field of existing network signaling and the abnormal behaviour that causes.
The method of reduce disturbing in the above-mentioned carrier aggregation system that the embodiment of the invention provides at the realization flow of carrier aggregation end side as shown in Figure 4, comprises the steps:
Step S21: the carrier aggregation terminal receives the system broadcast message of base station broadcast or receives the carrier aggregation dedicated signaling that the base station sends.
Carry the terminal coexistence demand information under the carrier aggregation mode of base station configuration in the system broadcast message that receives or the carrier aggregation dedicated signaling, specifically referring to step S11 and step S12.
Step S22: the terminal coexistence demand information that carries in the system broadcast message that carrier aggregation terminal basis receives or the carrier aggregation dedicated signaling, the actual emission power when determining to satisfy the coexistence demand and/or the maximum up resource block number that uses.
The carrier aggregation terminal is determined the back-off value according to the terminal coexistence demand information that carries in the system broadcast message that receives or the carrier aggregation dedicated signaling, determines the actual emission power of self according to the back-off value.And/or the carrier aggregation terminal is determined the maximum up resource block number that uses according to the terminal coexistence demand information that carries in the system broadcast message that receives or the carrier aggregation dedicated signaling.
Several implementations corresponding to base station configurating terminal coexistence demand information among the step S11, adopt respectively one of following manner or combination to determine the back-off value according to the coexistence demand information:
When (a2) the carrier aggregation terminal receives the terminal coexistence demand information that carries in system broadcast message or the carrier aggregation dedicated signaling and is the first corresponding relation of transmitted bandwidth and back-off value, according to the first corresponding relation and the actual transmission bandwidth of self, determine the back-off value.
This mode realizes based on the mode among the step S11 (a1), determines the back-off value by carrier aggregation terminal executive basis the first corresponding relation and the actual transmission bandwidth of self.
When (b2) the carrier aggregation terminal receives the terminal coexistence demand information that carries in system broadcast message or the carrier aggregation dedicated signaling and is the second corresponding relation of transmitted bandwidth, the actual resource block size that takies and back-off value, according to described the second corresponding relation, the actual transmission bandwidth of self and the actual resource block size that takies, determine the back-off value.
This mode realizes based on the mode among the step S11 (b1), determines the back-off value by carrier aggregation terminal executive basis the second corresponding relation, the actual transmission bandwidth of self and the actual resource block size that takies.
When (c2) the carrier aggregation terminal receives the terminal coexistence demand information that carries in system broadcast message or the carrier aggregation dedicated signaling and is the 3rd corresponding relation of transmitted bandwidth, the actual resource block size that takies, the actual resource block location that takies and back-off value, according to the 3rd corresponding relation, the actual transmission bandwidth of self and the actual resource block size that takies and position, determine the back-off value.
This mode realizes based on the mode among the step S11 (c1), by carrier aggregation terminal executive basis the 3rd corresponding relation, the actual transmission bandwidth of self, the actual resource block size that takies and location positioning back-off value.
When (d2) the carrier aggregation terminal receives the terminal coexistence demand information that carries in system broadcast message or the carrier aggregation dedicated signaling and is the back-off value, parse described back-off value.
This mode based on the mode among the step S11 (e1), (f1) with (g1) directly the mode of transmitted power rollback value realize, the carrier aggregation terminal only needs received power rollback value, then directly use gets final product.
When (e2) the carrier aggregation terminal receives the terminal coexistence demand information that carries in system broadcast message or the carrier aggregation dedicated signaling and is performance number corresponding to back-off value coding, search the performance number coding of storage and the corresponding relation of back-off value, determine described back-off value.
The mode of this mode performance number coding corresponding to transmitted power rollback value based on the mode among the step S11 (e1), (f1) with (g1) realizes, behind the carrier aggregation terminal received power value coding, inquiry obtains corresponding back-off value and gets final product.
Corresponding to several implementations of base station configurating terminal coexistence demand information among the step S11, adopt respectively one of following manner or combination to determine the maximum up resource block number that uses of merit according to the coexistence demand information:
(f2) to receive the terminal coexistence demand information that carries in system broadcast message or the carrier aggregation dedicated signaling be that the transmitted bandwidth of carrier aggregation terminal is with maximum up when using number of resource blocks purpose the 4th corresponding relation to the carrier aggregation terminal, according to the 4th corresponding relation, determine self maximum up resource block number that uses.
This mode realizes based on the mode among the step S11 (d1), by carrier aggregation terminal executive basis the 4th corresponding relation, the definite maximum up resource block number that uses of actual transmission bandwidth of self.
(g2) to receive the terminal coexistence demand information that carries in system broadcast message or the carrier aggregation dedicated signaling be maximum can use number of resources the time to the carrier aggregation terminal, parses maximum and can use number of resources.
This mode can use the mode of number of resources to realize based on directly sending maximum in the mode among the step S11 (h1), and the carrier aggregation terminal only need to receive maximum can use number of resources, then directly uses to get final product.
(h2) the carrier aggregation terminal receives the terminal coexistence demand information that carries in system broadcast message or the carrier aggregation dedicated signaling for maximum can use number coding corresponding to number of resources the time; The number coding of searching storage and the maximum corresponding relation that can use number of resources determine that maximum can use number of resources.
This mode can use the mode of number coding corresponding to number of resources to realize based on sending maximum in the mode among the step S11 (h1), and after the carrier aggregation terminal received number coding, inquiry obtained corresponding maximum and can use number of resources to get final product.
The below is during with the up emission of TDD terminal of a Band38, and the instantiation of the descending reception of the FDD terminal by up emission protection Band7 describes.
As shown in Figure 4, the up emission of TDD terminal (UL) of Band38, the descending reception of FDD terminal (DL) of Band 7.Wherein, Band 38 supports following carrier aggregation bandwidth combination: 20MHz+5MHz, 20MHz+10MHz, 20MHz+15MHz or 20MHz+20MHz.Restricted band (Restricted block) is at the 2570MHz place; Out-of-band radiation limit value corresponding to working frequency range band outer (out-of-band, OOB) is-15.5dBm/5MHz; Stray radiation limit value corresponding to spurious emissions (Spurious emission) is-30dBm/MHz.
The band stray radiation requires usually can not change owing to the bandwidth of interference source; can predict the Band 38 protection Band 7 among the Rel-10 radio-frequency (RF) index will and Rel-8,9 is identical, works as spectrum aggregating; after transmitted bandwidth becomes greatly, need to carry out back-off and just can satisfy the outer coexistence of band index.According to terminal hardware emulation; can draw corresponding different aggregate bandwidth combination and satisfy the required back-off value of band outer coexistence index, the FDD terminal power demand rollback requirement of protection Band 7 in the time of for example can as shown in table 3 belowly be the TDD terminal carrier polymerization of Band 38:
Table 3
The base station is operated in the carrier aggregation state, and the frequency range of supporting is when needing configurating terminal coexistence demand information, base station extra terminal coexistence demand information during according to table 1 configuration carrier aggregation, and configuration mode can be referring to step S11.In mode (d1) as example, the transmitted bandwidth of supposing terminal is 30MHz, the actual resource block size that takies is 7, then can determine that according to table 1 the back-off value is≤1dB, terminal needs approximately 1dB of rollback power, the base station directly this back-off value is sent to terminal maybe performance number that this back-off value is corresponding coding send to terminal, terminal subtracts the 1dB emission on the maximum transmission power basis on the RB of actual transmission.
The method extra terminal coexistence demand information during by base station configuration and indication carrier wave polymerization, terminal is carried out back-off according to the indication of base station in the corresponding region.Can support does not need the corresponding back-off that coexists under the non-carrier aggregation, and the actual demand of required power rollback when carrier aggregation, and the terminal that can not occur in the Rel-8/Rel-9 system receives unknown message and causes abnormal behaviour.
The method of disturbing is provided in the above-mentioned carrier aggregation system that provides according to the embodiment of the invention, the embodiment of the invention also provides and reduces the system that disturbs in a kind of carrier aggregation system, this system configuration as shown in Figure 5, comprise base station 1 and carrier aggregation terminal 2, wherein the base station can be the TDD base station, also can be the FDD base station; The carrier aggregation terminal can be the TDD terminal, also can be the FDD terminal.
The structure of above-mentioned base station 1 comprises as shown in Figure 6: configuration module 11, instruction generation module 12 and instruction sending module 13.
Preferably, above-mentioned configuration module 11 specifically is used for: judge whether terminal is operated under the carrier aggregation mode, and whether the frequency range that terminal is supported needs configurating terminal coexistence demand information; When terminal works under carrier aggregation mode and the frequency range of supporting when needing configurating terminal coexistence demand information, configurating terminal coexistence demand information.
Preferably, above-mentioned configuration module 11 concrete is used for carrying out one of following configuration mode or combination: the transmitted bandwidth of carrier aggregation terminal and the first corresponding relation of back-off value are determined in the base station, with the first corresponding relation as the demand information that coexists; The second corresponding relation of the transmitted bandwidth of carrier aggregation terminal, the actual resource block size that takies and back-off value is determined in the base station, with the second corresponding relation as the coexistence demand information; The 3rd corresponding relation of the transmitted bandwidth of carrier aggregation terminal, the actual resource block size that takies, the actual resource block location that takies and back-off value is determined in the base station, with the 3rd corresponding relation as the coexistence demand information; The transmitted bandwidth that the carrier aggregation terminal is determined in the base station and maximum up number of resource blocks purpose the 4th corresponding relation that uses, with the 4th corresponding relation as the coexistence demand information; The back-off value of carrier aggregation terminal is determined according to the transmitted bandwidth of carrier aggregation terminal in the base station, and back-off value or performance number corresponding to described back-off value are encoded as the coexistence demand information; The back-off value of carrier aggregation terminal is determined according to transmitted bandwidth and the actual resource block size that takies of carrier aggregation terminal in the base station, and back-off value or performance number corresponding to described back-off value are encoded as the coexistence demand information; The base station is according to the transmitted bandwidth of carrier aggregation terminal, the actual resource block size that takies and the actual resource block location that takies, determine the back-off value of carrier aggregation terminal, back-off value or performance number corresponding to described back-off value are encoded as the coexistence demand information; The maximum up resource block number that uses is determined according to the transmitted bandwidth of carrier aggregation terminal in the base station, can use number coding corresponding to number of resources as the coexistence demand information up resource block number or the maximum used of maximum.
Preferably, above-mentioned instruction generation module 12 specifically is used for: the system information block type field at host system message block MIB or system information block SIB increases coexistence demand information field, carried terminal coexistence demand information; Or in special-purpose physical layer configurations information, increase coexistence demand information field carried terminal coexistence demand information.
The structure of above-mentioned carrier aggregation terminal 2 comprises as shown in Figure 7: signaling receiver module 21 and interference processing module 22.
Signaling receiver module 21 is used for receiving the system broadcast message of base station broadcast or receives the carrier aggregation dedicated signaling that the base station sends; Carry the terminal coexistence demand information under the carrier aggregation mode of base station configuration in this system broadcast message or the carrier aggregation dedicated signaling;
Disturb processing module 22, be used for the terminal coexistence demand information, the actual emission power when determining to satisfy the coexistence demand and/or the maximum up resource block number that uses that carry according to the system broadcast message that receives or carrier aggregation dedicated signaling.
Preferably, above-mentioned interference processing module 22, specifically be used for: according to the terminal coexistence demand information that the system broadcast message that receives or carrier aggregation dedicated signaling carry, determine the back-off value, determine the actual emission power of carrier aggregation terminal according to the back-off value; And/or according to the terminal coexistence demand information that carries in the system broadcast message that receives or the carrier aggregation dedicated signaling, determine the up resource block number that uses of described maximum.
Preferably, above-mentioned interference processing module 22, concrete being used for adopts one of following manner or combination to determine the back-off value: when the carrier aggregation terminal receives terminal coexistence demand information that system broadcast message or carrier aggregation dedicated signaling carry and is the first corresponding relation of transmitted bandwidth and back-off value, according to the first corresponding relation and the actual transmission bandwidth of self, determine the back-off value; When the carrier aggregation terminal receives the terminal coexistence demand information that carries in system broadcast message or the carrier aggregation dedicated signaling and is the second corresponding relation of transmitted bandwidth, the actual resource block size that takies and back-off value, according to the second corresponding relation, the actual transmission bandwidth of self and the actual resource block size that takies, determine the back-off value; When the carrier aggregation terminal receives the terminal coexistence demand information that carries in system broadcast message or the carrier aggregation dedicated signaling and is the 3rd corresponding relation of transmitted bandwidth, the actual resource block size that takies, the actual resource block location that takies and back-off value, according to the 3rd corresponding relation, the actual transmission bandwidth of self and the actual resource block size that takies and position, determine the back-off value; When the carrier aggregation terminal receives the terminal coexistence demand information that carries in system broadcast message or the carrier aggregation dedicated signaling and is the back-off value, parse back-off value order; When the carrier aggregation terminal receives the terminal coexistence demand information that carries in system broadcast message or the carrier aggregation dedicated signaling and is performance number corresponding to back-off value coding; Search the performance number coding of storage and the corresponding relation of back-off value, determine the back-off value.
Preferably, above-mentioned interference processing module 22, concrete being used for adopts one of following manner or combination to determine the maximum up resource block number that uses: the carrier aggregation terminal receives terminal coexistence demand information that system broadcast message or carrier aggregation dedicated signaling carry and is the transmitted bandwidth of carrier aggregation terminal, maximum up when using number of resource blocks purpose the 4th corresponding relation, according to the 4th corresponding relation, determine self maximum up resource block number that uses; It is maximum can use number of resources the time that the carrier aggregation terminal receives the terminal coexistence demand information that carries in system broadcast message or the carrier aggregation dedicated signaling, parses maximum and can use number of resources; The carrier aggregation terminal receives the terminal coexistence demand information that carries in system broadcast message or the carrier aggregation dedicated signaling for maximum can use number coding corresponding to number of resources the time; The number coding of searching storage and the maximum corresponding relation that can use number of resources determine that maximum can use number of resources.
Above-mentioned explanation illustrates and has described the preferred embodiments of the present invention, but as previously mentioned, be to be understood that the present invention is not limited to the disclosed form of this paper, should not regard the eliminating to other embodiment as, and can be used for various other combinations, modification and environment, and can in invention contemplated scope described herein, change by technology or the knowledge of above-mentioned instruction or association area.And the change that those skilled in the art carry out and variation do not break away from the spirit and scope of the present invention, then all should be in the protection range of the appended claim of the present invention.
Claims (16)
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| CN102958064B (en) | 2016-05-25 |
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