CN102148670B - Timing advance (TA) value indication method and device - Google Patents
Timing advance (TA) value indication method and device Download PDFInfo
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- CN102148670B CN102148670B CN 201010110961 CN201010110961A CN102148670B CN 102148670 B CN102148670 B CN 102148670B CN 201010110961 CN201010110961 CN 201010110961 CN 201010110961 A CN201010110961 A CN 201010110961A CN 102148670 B CN102148670 B CN 102148670B
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Abstract
The invention discloses a timing advance (TA) value indication method and a TA value indication device. The method comprises the following steps of: determining an uplink component carrier numbers or an uplink component carrier group number N corresponding to each downlink component carrier X, wherein N is a positive integer greater than 1, and the downlink component carrier is used for bearing a TA value; generating N media access control layer control elements (MAC CE), wherein each MAC CE carries carrier indication information for illustrating uplink component carriers or uplink component carrier groups corresponding to each MAC CE, and further carries the TA values of the corresponding uplink component carriers or the corresponding uplink component carrier groups; and bearing the N MAC CEs onto the downlink component carrier X, and transmitting the downlink component carrier X to user equipment (UE). By the method and the device provided by the invention, the TA values of each uplink component carrier or each uplink component carrier group can be accurately indicated.
Description
Technical field
The present invention relates to carrier aggregation technology, particularly the time advance in a kind of carrier aggregation (TA, Timing Advance) value indicating means and device.
Background technology
Existing senior Long Term Evolution (LTE-A, Long Term Evolution-Advanced) in the system, carrier aggregation support " continuous carrier polymerization in the frequency band ", " discrete carrier polymerization in the frequency band " and " discrete carrier polymerization between frequency band " three kinds of typical scenes.
Wherein, because the fading characteristic of different frequency bands is different, the coverage of the different frequency bands in " discrete carrier polymerization between frequency band " scene has than big difference.As shown in Figure 1, Fig. 1 is the coverage schematic diagram of existing two different frequency bands.F1 and f2 are the frequency bands of two apart from each others, and wherein f1 is low-frequency band, and coverage is larger, and f2 is high frequency band, and coverage is less; In order to improve f2 at the covering quality of specific region, operator can dispose repeater (Repeater) in some zone, as shown in Figure 1.If user terminal (UE, User Equipment) between the coverage of f1 and f2, on f1 and f2, communicate with the base station simultaneously, so when UE transmits upstream data by f1 and f2 to the base station, because it is different to arrive the distance of base station, therefore UE need to adopt independently TA value at f1 and f2, keeps synchronously to guarantee the signal that arrives the base station.
In the prior art, usually utilize media access control layer control unit (MAC CE, MediaAccess Control Control Element) that the TA value is indicated to UE by the base station.Wherein, MAC CE is comprised of two parts, a part is media access control layer control unit head (MAC CESubheader) shown in Figure 2, another part is entity part shown in Figure 3, i.e. media access control layer time advance control unit (Timing Advance Command MAC Control Element).Two bits of two " R " shown in Fig. 2 for reserving, " E " is the special purpose bit, irrelevant with scheme of the present invention, be not described, " Logic Channel Identifier (LCID; Local Channel Identifier) " field takies 5 bits altogether, and when its value was " 11101 ", expression MAC CE was Timing Advance CommandMAC Control Element; Two " R " shown in Fig. 3 are two bits for reserving also, and " TimingAdvance Command " field is used for carrying TA value, takies 6 bits.
Usually, can by at downlink member carrier (Component Carrier) carrying MAC CE, indicate the TA value of uplink member carrier corresponding to this downlink member carrier or uplink member carrier group (TA Group) (namely one group of uplink member carrier shares an identical TA value).In actual applications, presumable downlink member carrier is used for carrying TA value, and the TA value is carried in being not used in of having, and the downlink member carrier of mentioning in the scheme of the present invention all specially refers to the downlink member carrier for carrying TA value.If the downlink member carrier number in the system is identical with the uplink member carrier number, be that the pairing of up-downgoing member carrier occurs, or the downlink member carrier number is identical with uplink member carrier group number, then can not go wrong, but, if uplink member carrier number or uplink member carrier group number are greater than the downlink member carrier number, the problem that the TA value of some uplink member carrier or some uplink member carrier group can't be indicated then can appear, thereby affect follow-up signal synchronizing process, but also do not have a kind of effective settling mode in the prior art.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of time advance TA value indicating means, can correctly indicate the TA value of each uplink member carrier or uplink member carrier group.
Another object of the present invention is to provide a kind of time advance TA value indicating device, can correctly indicate the TA value of each uplink member carrier or uplink member carrier group.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of time advance TA value indicating means comprises:
Determine that uplink member carrier number or uplink member carrier group that each downlink member carrier X is corresponding count N, described N is the positive integer greater than 1, and described downlink member carrier is for being used for the descending one-tenth of carrying TA value
Generate N media access control layer control unit MAC CE, all carry the carrier wave indication information among each MAC CE, be used for corresponding uplink member carrier or the uplink member carrier group of each MAC CE of explanation, further carry the TA value of corresponding uplink member carrier or uplink member carrier group among each MAC CE;
Described N MAC CE be carried on the described downlink member carrier X send to user terminal UE.
Preferably, all carrying the carrier wave indication information among described each MAC CE comprises:
Utilize the designated bit position of reserving among media access control layer control unit head MAC CE Subheader among each MAC CE and/or the media access control layer time advance control unit Timing Advance Command MAC ControlElement to carry described carrier wave indication information, be set to different values by described designated bit position and represent different uplink member carrier or uplink member carrier group.
Preferably, describedly utilize the designated bit position of reserving among MAC CE Subheader among each MAC CE and/or the TimingAdvance Command MAC Control Element to carry described carrier wave indication information to comprise:
If the minimum value of the number ratio r of the uplink member carrier that the downlink member carrier in the system is corresponding with it or uplink member carrier group is 1/4, then utilize two bits reserving among described MAC CE Subheader or the Timing AdvanceCommand MAC Control Element to carry described carrier wave indication information;
If the minimum value of described ratio r is 1/5, then utilize any three in four bits reserving among described MAC CE Subheader and the TimingAdvance Command MAC Control Element to carry described carrier wave indication information.
Preferably, all carrying the carrier wave indication information among described each MAC CE comprises:
Utilize the Logic Channel Identifier LCID field among the described MAC CE Subheader to carry described carrier wave indication information, be set to different uplink member carrier or the uplink member carrier group that different values represents that each MAC CE is corresponding by described LCID field.
Preferably, described N MAC CE is carried on sends to UE on the described downlink member carrier X and comprises:
Described N MAC CE sent to UE successively according to the time order and function order, perhaps, send to simultaneously UE.
A kind of time advance TA value indicating device comprises:
Processing unit is used for definite corresponding uplink member carrier number or uplink member carrier group of each downlink member carrier X and counts N, and described N is the positive integer greater than 1, and described downlink member carrier is for being used for the downlink member carrier of carrying TA value; Generate N media access control layer control unit MAC CE, all carry the carrier wave indication information among each MAC CE, be used for corresponding uplink member carrier or the uplink member carrier group of each MAC CE of explanation, further carry the TA value of corresponding uplink member carrier or uplink member carrier group among each MAC CE;
Transmitting element sends to user terminal UE for described N MAC CE is carried on the downlink member carrier X.
Preferably, described processing unit comprises:
Determine subelement, be used for definite corresponding uplink member carrier number or uplink member carrier group of each downlink member carrier X and count N, described N is the positive integer greater than 1;
Generate subelement, be used for generating N MAC CE, and utilize the designated bit position of reserving among media access control layer control unit head MAC CE Subheader among each MAC CE and/or the media access control layer time advance control unit Timing Advance Command MAC Control Element to carry the carrier wave indication information, be set to different uplink member carrier or the uplink member carrier group that different values represents that each MAC CE is corresponding by described designated bit position, simultaneously, in each MAC CE, further carry the TA value of corresponding uplink member carrier or uplink member carrier group.
Perhaps, described processing unit comprises:
Determine subelement, be used for definite corresponding uplink member carrier number or uplink member carrier group of each downlink member carrier X and count N, described N is the positive integer greater than 1;
Generate subelement, be used for generating N MAC CE, and utilize the Logic Channel Identifier LCID field among the MAC CESubheader among each MAC CE to carry the carrier wave indication information, be set to different uplink member carrier or the uplink member carrier group that different values represents that each MAC CE is corresponding by described LCID field, simultaneously, in each MAC CE, further carry the TA value of corresponding uplink member carrier or uplink member carrier group.
As seen, adopt technical scheme of the present invention, count N according to uplink member carrier number or uplink member carrier group that each downlink member carrier is corresponding, N is the positive integer greater than 1, send N MAC CE to UE, all carry the carrier wave indication information among each MAC CE, be used for corresponding uplink member carrier or the uplink member carrier group of this MAC CE of explanation, further carry the TA value of corresponding uplink member carrier or uplink member carrier group among each MAC CE.Compared with prior art, scheme of the present invention can correctly indicate each uplink member carrier or TA value corresponding to uplink member carrier group, thereby guarantees normally carrying out of follow-up signal synchronizing process.
Description of drawings
Fig. 1 is the coverage schematic diagram of existing two different frequency bands.
Fig. 2 is the structural representation of existing MAC CE Subheader.
Fig. 3 is the structural representation of existing Timing Advance Command MAC Control Element.
Fig. 4 is the flow chart of the inventive method embodiment.
Fig. 5 is the schematic diagram of the first carrier wave indication information carrying mode among the inventive method embodiment.
Fig. 6 is the schematic diagram of the second carrier wave indication information carrying mode among the inventive method embodiment.
Fig. 7 is the schematic diagram of the third carrier wave indication information carrying mode among the inventive method embodiment.
Fig. 8 is the composition structural representation of apparatus of the present invention embodiment.
Embodiment
For problems of the prior art, a kind of brand-new TA value indication scheme is proposed among the present invention, count N according to uplink member carrier number or uplink member carrier group that each downlink member carrier is corresponding, N is the positive integer greater than 1, send N MAC CE to UE, all carry carrier wave indication information (CI among each MAC CE, Carrier Index), be used for corresponding uplink member carrier or the uplink member carrier group of this MAC CE of explanation, further carry the TA value of corresponding uplink member carrier or uplink member carrier group among each MAC CE.
For making purpose of the present invention, technical scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
Fig. 4 is the flow chart of the inventive method embodiment.As shown in Figure 4, may further comprise the steps:
Step 41: determine that uplink member carrier number or uplink member carrier group that each downlink member carrier X is corresponding count N, N is the positive integer greater than 1.
The uplink member carrier that each downlink member carrier of how to confirm is corresponding or uplink member carrier group are prior art, repeat no more.
Step 42: generate N MAC CE, all carry the carrier wave indication information among each MAC CE, be used for corresponding uplink member carrier or the uplink member carrier group of each MAC CE of explanation, further carry the TA value of corresponding uplink member carrier or uplink member carrier group among each MAC CE.
In the present embodiment, can adopt various ways to carry described carrier wave indication information, such as:
Mode 1)
Utilize the designated bit position of reserving among MAC CE Subheader among each MAC CE and/or the Timing Advance CommandMAC Control Element to carry the carrier wave indication information, be set to different values by the designated bit position and represent different uplink member carrier or uplink member carrier group.
In actual applications, the uplink member carrier number that each downlink member carrier is corresponding or uplink member carrier group number the most very much not can surpass 5 usually, if so the value minimum of the number ratio r of the uplink member carrier corresponding with it of the downlink member carrier in the system or uplink member carrier group is 1/4, then only need utilizes two bits reserving among MAC CESubheader or the Timing Advance Command MAC Control Element to carry the carrier wave indication information and get final product; If the value minimum of ratio r is 1/5, then can utilize any three in four bits reserving among MAC CESubheader and the Timing Advance Command MAC Control Element to carry the carrier wave indication information.
Illustrate:
If the minimum value of ratio r is 1/4, utilize two bits reserving among the Timing Advance Command MAC ControlElement to carry the carrier wave indication information, so as shown in Figure 5, Fig. 5 is the schematic diagram of the first carrier wave indication information carrying mode among the inventive method embodiment, can be set to different values by two bits reserving among the TimingAdvance Command MAC Control Element, such as, 00,01,10,11, represent different uplink member carrier or uplink member carrier group, correspondingly, carry the TA value of different uplink member carrier or uplink member carrier group by " Timing Advance Command " field.
If the minimum value of ratio r is 1/4, utilize two bits reserving among the MAC CE Subheader to carry the carrier wave indication information, so as shown in Figure 6, Fig. 6 is the schematic diagram of the second carrier wave indication information carrying mode among the inventive method embodiment, can be set to different values by two bits reserving among the MAC CE Subheader, such as, 00,01,10,11, represent different uplink member carrier or uplink member carrier group.
If the minimum value of ratio r is 1/5, utilize two bits reserving among second reserved bit position among the MAC CE Subheader and the Timing Advance Command MAC Control Element totally three bits carry the carrier wave indication information, so as shown in Figure 7, Fig. 7 is the schematic diagram of the third carrier wave indication information carrying mode among the inventive method embodiment, be set to different values by these three bits, such as 001,010,011 etc., represent different uplink member carrier or uplink member carrier group.
Mode 2)
Utilize the LCID field among the MAC CE Subheader to carry the carrier wave indication information, be set to different uplink member carrier or the uplink member carrier group that different values represents that each MAC CE is corresponding by the LCID field.
Illustrate:
LCID takies five bits altogether, according to existing mode, its value is 11101,01011～11011 to be reserved value, so, (concrete number is decided on actual needs can to take out several values from 01011～11011 and 11101, such as, corresponding five uplink member carrier of downlink member carrier or uplink member carrier group can be taken out 5 values so), each value represents a uplink member carrier or uplink member carrier group, as shown in Table 1:
| The LCID value | Uplink member carrier or uplink member carrier group |
| 11101 | Uplink member carrier or uplink member carrier group 0 |
| 01011 | Uplink member carrier or uplink member carrier group 1 |
| 01012 | Uplink member carrier or uplink member carrier group 2 |
| 01013 | Uplink member carrier or uplink member carrier group 3 |
| 01014 | Uplink member carrier or uplink member carrier group 4 |
Uplink member carrier or the uplink member carrier group of the representative of table one Different L CID value
Step 43: N MAC CE be carried on the downlink member carrier X send to UE.
In actual applications, this N MAC CE in chronological sequence sequentially can be sent to UE successively, perhaps, can send to simultaneously UE yet, specific implementation is not limit.
Above-mentioned simultaneously transmission, can refer to send simultaneously a plurality of MAC CE, each MAC CE forms by MACCE Subheader and Timing Advance Command MAC Control Element two parts, perhaps, in some cases, such as mode 1) described in two bits reserving among the Timing Advance CommandMAC Control Element that utilize carry the carrier wave indication information, also can share a MAC CE Subheader by a plurality of MAC CE, namely send simultaneously a MAC CE Subheader and a plurality of Timing Advance Command MAC Control Element, utilize two bits reserving among the MAC CESubheader to carry a numeral, be used for the number of explanation Timing AdvanceCommand MAC Control Element.
So far, namely finished flow process shown in the inventive method embodiment, follow-up, how UE is treated to prior art according to the TA value that receives, and repeats no more.
Based on said method, Fig. 8 is the composition structural representation of apparatus of the present invention embodiment.As shown in Figure 8, comprising:
Processing unit 81 is used for definite corresponding uplink member carrier number or uplink member carrier group of each downlink member carrier X and counts N, and N is the positive integer greater than 1; Generate N MAC CE, all carry the carrier wave indication information among each MAC CE, be used for corresponding uplink member carrier or the uplink member carrier group of each MAC CE of explanation, further carry the TA value of corresponding uplink member carrier or uplink member carrier group among each MAC CE;
Transmitting element 82 sends to UE for N MAC CE is carried on the downlink member carrier X.
Wherein, can specifically comprise in the processing unit 81:
Determine subelement 811, be used for definite corresponding uplink member carrier number or uplink member carrier group of each downlink member carrier X and count N, N is the positive integer greater than 1;
Generate subelement 812, be used for generating N MAC CE, and utilize the designated bit position of reserving among MACCE Subheader among each MAC CE and/or the Timing Advance Command MAC Control Element to carry the carrier wave indication information, be set to different uplink member carrier or the uplink member carrier group that different values represents that each MAC CE is corresponding by the designated bit position, simultaneously, in each MAC CE, further carry the TA value of corresponding uplink member carrier or uplink member carrier group;
Perhaps, generating subelement 812 is used for, generate N MAC CE, and utilize the LCID field among the MAC CE Subheader among each MAC CE to carry the carrier wave indication information, be set to different uplink member carrier or the uplink member carrier group that different values represents that each MAC CE is corresponding by the LCID field, simultaneously, in each MAC CE, further carry the TA value of corresponding uplink member carrier or uplink member carrier group.
The specific works flow process of device embodiment shown in Figure 8 please refer to the respective description in the embodiment of the method shown in Figure 4, repeats no more herein.
In a word, adopt technical scheme of the present invention, can correctly indicate the TA value of each uplink member carrier or uplink member carrier group; And scheme of the present invention implements simple and convenient, is convenient to popularize.
In sum, above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a time advance TA value indicating means is characterized in that, the method comprises:
Determine that uplink member carrier corresponding to each downlink member carrier X counted N or the uplink member carrier group is counted N, described N is the positive integer greater than 1, and described downlink member carrier is for being used for the downlink member carrier of carrying TA value;
Generate N media access control layer control unit MAC CE, all carry the carrier wave indication information among each MAC CE, be used for corresponding uplink member carrier or the uplink member carrier group of each MAC CE of explanation, further carry the TA value of corresponding uplink member carrier or uplink member carrier group among each MAC CE;
Described N MAC CE be carried on the described downlink member carrier X send to user terminal UE.
2. method according to claim 1 is characterized in that, all carries the carrier wave indication information among described each MAC CE and comprises:
Utilize the designated bit position of reserving among media access control layer control unit head MAC CE Subheader among each MAC CE and/or the media access control layer time advance control unit Timing Advance Command MAC ControlElement to carry described carrier wave indication information, be set to different values by described designated bit position and represent different uplink member carrier or uplink member carrier group.
3. method according to claim 2, it is characterized in that, describedly utilize the designated bit position of reserving among MAC CE Subheader among each MAC CE and/or the Timing Advance Command MAC Control Element to carry described carrier wave indication information to comprise:
If the minimum value of the number ratio r of the uplink member carrier that the downlink member carrier in the system is corresponding with it or uplink member carrier group is 1/4, then utilize two bits reserving among described MAC CE Subheader or the Timing AdvanceCommand MAC Control Element to carry described carrier wave indication information;
If the minimum value of described ratio r is 1/5, then utilize any three in four bits reserving among described MAC CE Subheader and the TimingAdvance Command MAC Control Element to carry described carrier wave indication information.
4. method according to claim 1 is characterized in that, all carries the carrier wave indication information among described each MAC CE and comprises:
Utilize the Logic Channel Identifier LCID field among the described MAC CE Subheader to carry described carrier wave indication information, be set to different uplink member carrier or the uplink member carrier group that different values represents that each MAC CE is corresponding by described LCID field.
5. according to claim 1,2,3 or 4 described methods, it is characterized in that, described N MACCE is carried on sends to UE on the described downlink member carrier X and comprises:
Described N MAC CE sent to UE successively according to the time order and function order, perhaps, send to simultaneously UE.
6. a time advance TA value indicating device is characterized in that, comprising:
Processing unit is used for determining that uplink member carrier corresponding to each downlink member carrier X counted N or the uplink member carrier group is counted N, and described N is the positive integer greater than 1, and described downlink member carrier is for being used for the downlink member carrier of carrying TA value; Generate N media access control layer control unit MAC CE, all carry the carrier wave indication information among each MAC CE, be used for corresponding uplink member carrier or the uplink member carrier group of each MAC CE of explanation, further carry the TA value of corresponding uplink member carrier or uplink member carrier group among each MAC CE;
Transmitting element sends to user terminal UE for described N MAC CE is carried on the downlink member carrier X.
7. device according to claim 6 is characterized in that, described processing unit comprises:
Determine subelement, be used for determining that uplink member carrier corresponding to each downlink member carrier X counted N or the uplink member carrier group is counted N, described N is the positive integer greater than 1;
Generate subelement, be used for generating N MAC CE, and utilize the designated bit position of reserving among media access control layer control unit head MAC CE Subheader among each MAC CE and/or the media access control layer time advance control unit Timing Advance Command MAC Control Element to carry the carrier wave indication information, be set to different uplink member carrier or the uplink member carrier group that different values represents that each MAC CE is corresponding by described designated bit position, simultaneously, in each MAC CE, further carry the TA value of corresponding uplink member carrier or uplink member carrier group.
8. device according to claim 6 is characterized in that, described processing unit comprises:
Determine subelement, be used for determining that uplink member carrier corresponding to each downlink member carrier X counted N or the uplink member carrier group is counted N, described N is the positive integer greater than 1;
Generate subelement, be used for generating N MAC CE, and utilize the Logic Channel Identifier LCID field among the MAC CESubheader among each MAC CE to carry the carrier wave indication information, be set to different uplink member carrier or the uplink member carrier group that different values represents that each MAC CE is corresponding by described LCID field, simultaneously, in each MAC CE, further carry the TA value of corresponding uplink member carrier or uplink member carrier group.
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| CN 201010110961 CN102148670B (en) | 2010-02-10 | 2010-02-10 | Timing advance (TA) value indication method and device |
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| CN 201010110961 CN102148670B (en) | 2010-02-10 | 2010-02-10 | Timing advance (TA) value indication method and device |
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| WO2017034156A1 (en) | 2015-08-21 | 2017-03-02 | Lg Electronics Inc. | Method for activating or deactivating a cell in a wireless communication system and a device therefor |
| WO2017206031A1 (en) * | 2016-05-30 | 2017-12-07 | 华为技术有限公司 | Information transmission method and apparatus |
| CN108809594B (en) * | 2017-05-05 | 2021-01-29 | 华为技术有限公司 | Data transmission method, terminal equipment and network equipment |
| CN111092710A (en) * | 2019-11-08 | 2020-05-01 | 中兴通讯股份有限公司 | Transmission parameter determination method, electronic device, apparatus, and medium |
| CN113630859B (en) * | 2020-05-06 | 2023-07-21 | 北京佰才邦技术股份有限公司 | Information confirmation method, terminal equipment and network equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1378761A (en) * | 1999-08-11 | 2002-11-06 | 艾利森公司 | Apparatus and methods for extended base station range using staggered uplink frame structures |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1378761A (en) * | 1999-08-11 | 2002-11-06 | 艾利森公司 | Apparatus and methods for extended base station range using staggered uplink frame structures |
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