CN102045100A - Downlink service bearing method and downlink service sending device - Google Patents
Downlink service bearing method and downlink service sending device Download PDFInfo
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- CN102045100A CN102045100A CN2009101798681A CN200910179868A CN102045100A CN 102045100 A CN102045100 A CN 102045100A CN 2009101798681 A CN2009101798681 A CN 2009101798681A CN 200910179868 A CN200910179868 A CN 200910179868A CN 102045100 A CN102045100 A CN 102045100A
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Abstract
The invention discloses a downlink service bearing method and a downlink service sending device, which are used for bearing a downlink service in an auxiliary carrier. The method comprises the step of bearing the downlink service in a TS0 (Time Slot 0) of part of a plurality of subframes in a preset time interval. The device comprises a bearing module and an interweaving module, wherein the bearing module is used for bearing the downlink service in the TS0 of part of the plurality of subframes in the preset time interval; and the interweaving module is used for interweaving and sending the partial subframes. The downlink service bearing method and the downlink service sending device in the invention are favorable for solving the problem of insufficient downlink throughput of a TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) system, increasing the utilization rate of downlink resources and preventing the waste of the downlink resources; meanwhile, a system protocol is unnecessary to modify, thereby higher practicability is achieved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of downlink business bearing method and downlink business dispensing device.
Background technology
Time-division is synchronous-code division multiple access access (Time Division Synchronous Code Division Multiple Access, abbreviating TD-SCDMA as) system is as 3-G (Generation Three mobile communication system), one of its important feature is the disequilibrium of uplink and downlink link traffic, the traffic carrying capacity of down link is generally greater than the traffic carrying capacity of up link, cause the down link throughput deficiency, the problems referred to above are particularly evident for HSDPA.
Problem at the downlink throughput capacity deficiency of TD-SCDMA system in the correlation technique does not propose effective solution at present as yet.
Summary of the invention
At the problem of the downlink throughput capacity deficiency of the TD-SCDMA system that exists in the correlation technique and propose the present invention, for this reason, main purpose of the present invention is to provide a kind of downlink business bearing method and downlink business dispensing device, to address the above problem.
To achieve these goals, according to an aspect of the present invention, provide a kind of downlink business bearing method, be used in auxilliary carrier wave bearing downlink business.
Downlink business bearing method according to the present invention comprises: for a plurality of subframes in the predetermined time interval, and bearing downlink business in the TS0 time slot of the part subframe in a plurality of subframes.
Preferably, predetermined time interval is a Transmission Time Interval TTI.
Preferably, the bearing downlink business comprises in the TS0 time slot of the part subframe in a plurality of subframes: bearing downlink business in the TS0 time slot of the part subframe of TTI, wherein, the part subframe is preceding two subframes of TTI.
Preferably, the TS0 time slot of latter two subframe of TTI is used for the measurement of terminal.
Preferably, after the bearing downlink business, method also comprises in the TS0 time slot of preceding two subframes of TTI: the TS0 time slot to preceding two subframes of TTI interweaves.
Preferably, after preceding two subframes of TTI were interweaved, said method also comprised: the code channel transmission downlink business that adopts 1 SF=1 in the TS0 time slot of preceding two subframes of TTI; Perhaps, in preceding two subframe TS0 time slots of TTI, adopt the code channel transmission downlink business of 16 SF=16.
Preferably, downlink business comprises: CS64k business or PS64k business.
According to another aspect of the present invention, provide a kind of downlink business dispensing device, having comprised: carrier module is used at the fixed time bearing downlink business in the TS0 time slot of part subframe of a plurality of subframes at interval; Interleaving block is used for the part subframe is interweaved and sends.
Preferably, predetermined time interval is a TTI.
Preferably, carrier module specifically is used for the TS0 time slot bearing downlink business in the part subframe of TTI, and wherein, the part subframe is preceding two subframes of TTI.
By the present invention, bearing downlink business on the TS0 time slot of the part subframe of employing in a plurality of subframes of bearing downlink business, solved the problem of the downlink throughput capacity deficiency of the TD-SCDMA system that exists in the correlation technique, increased the utilance of downlink resource, avoided the waste of downlink resource, simultaneously do not need system protocol is made amendment, have very high practicality.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the downlink business bearing method of the embodiment of the invention;
Fig. 2 is the frame 2 multiplexing schematic diagrames according to the embodiment of the invention;
Fig. 3 is the idle schematic diagram of 10ms transmission, SF=1 code channel and TS0 of the system side of example according to the present invention;
Fig. 4 is 10ms reception, SF=1 code channel and the TS0 instrumentation plan of the end side of example according to the present invention;
Fig. 5 is the structured flowchart according to the downlink business bogey of the embodiment of the invention.
Embodiment
Functional overview
Consider problems of the prior art, the embodiment of the invention provides a kind of downlink business carrying scheme, the treatment principle of this scheme is: for a plurality of subframes in the predetermined time interval, and bearing downlink business in the TS0 time slot of the part subframe in a plurality of subframes.
Because agreement is not supported TS0 carrying HS-DSCH channel at present, in order to increase the time interval resource of carrying HS-DSCH channel, the scheme that the embodiment of the invention provides the downlink business that is carried on conventional time slot (for example, the CS64k business) transfers to the TS0 time slot, thereby reserve a conventional descending time slot carrying HS-DSCH, can effectively increase the downlink throughput capacity of HSDPA; In addition, in the TD-SCDMA system, still have the TS0 power of a lot of auxilliary carrier waves to be in idle state, caused the TS0 wasting of resources of TD-SCDMA, this scheme has utilized TS0 to carry out the carrying of downlink business, has avoided the waste of downlink resource.
It should be noted that, the terminal that is in connected state is except can be TS0 receives data, also to carry out the measurement of adjacent area between homogeneous-frequency adjacent-domain, alien frequencies adjacent area and system, therefore must reserve time enough (that is the idle TS0 of reserve part) to guarantee the measurement of terminal.
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Method embodiment
According to embodiments of the invention, a kind of downlink business bearing method is provided, has been used in auxilliary carrier wave bearing downlink business, Fig. 1 is the flow chart according to the downlink business bearing method of the embodiment of the invention, as shown in Figure 1, this method comprises that following step S102 is to step S106:
Step S102, for a plurality of subframes in the predetermined time interval, bearing downlink business in the TS0 time slot of the part subframe in a plurality of subframes, preferably, above-mentioned downlink business comprises: CS64k business or PS64k business.Particularly, predetermined time interval can be a Transmission Time Interval TTI, in this case, said process can be specially: bearing downlink business in the TS0 time slot of the part subframe of TTI, wherein, the part subframe is preceding two subframes of TTI, and the TS0 time slot of latter two subframe of TTI is used for the measurement of terminal.
Step S104, in the TS0 time slot of the part subframe in a plurality of subframes after the bearing downlink business, TS0 time slot to above-mentioned part subframe interweaves, at predetermined time interval is the situation of a Transmission Time Interval TTI, in the TS0 time slot of preceding two subframes of TTI after the bearing downlink business, the TS0 time slot of preceding two subframes of TTI is interweaved.
Step S106, after above-mentioned part subframe interweaved, in the TS0 of above-mentioned part subframe time slot, adopt the code channel transmission downlink business that adapts with the traffic carrying capacity that needs transmission, at predetermined time interval is the situation of a Transmission Time Interval TTI, adopts the code channel transmission downlink business of 1 SF=1 after preceding two subframes of TTI are interweaved in the TS0 time slot of preceding two subframes of TTI; Perhaps, in preceding two subframe TS0 time slots of TTI, adopt the code channel transmission downlink business of 16 SF=16.
Be described in detail below in conjunction with the implementation procedure of example the embodiment of the invention.
Example
In this example, describe the specific implementation of the method that the embodiment of the invention provides in detail.Fig. 2 is the frame 2 multiplexing schematic diagrames according to the embodiment of the invention, Fig. 3 is the idle schematic diagram of 10ms transmission, SF=1 code channel and TS0 of the system side of example according to the present invention, Fig. 4 is 10ms reception, SF=1 code channel and the TS0 instrumentation plan of the end side of example according to the present invention, divides several aspects to describe below in conjunction with accompanying drawing:
1. because the terminal that is in connected state need be carried out the measurement of adjacent area between homogeneous-frequency adjacent-domain, alien frequencies adjacent area and system, so all TS0 of terminal can not take by business fully, need reserve the measurement that a part of TS0 is used for terminal.Studies show that the measurement that utilizes half time to carry out terminal is enough.At this moment, system side need realize frame 2 multiplex techniques of TS0 by using the multiplexing mode of frame, make terminal have the time of half receive downlink business (for example, CS64k) data, remaining half time can be carried out the measurement of terminal.
Fig. 2 is the multiplexing schematic diagram of frame 2, in order to make TS0 can achieve frame 2 multiplexing, common gap information parameters R epetition period=2 and Repetition length=1 need be set, the expression repetition period is 2 frames, wherein have only 1 frame to be used to transmit data, other 1 frame is idle, to be used for the measurement of terminal.
2. the TTI length of CS64k is 20ms (4 subframes) under the conventional time slot, each subframe all has the transmission of business datum, after the TS0 time slot adopts frame 2 multiplex techniques, in order to make terminal have the time of half to measure, need will original 4 subframes data send completely in preceding 2 subframes, that is to say that the time of transmission data is 10ms, in the TS0 time slot of preceding two subframes (10ms), interweave and carry out data interlacing, the TS0 time slot of back 10ms (2 subframes) is idle, is used for the measurement of terminal.As shown in Figure 3, send the total data (being 2*640+1*144bit to the maximum) of former 4 subframes on the TS0 time slot of 2 subframes in front in system side, the TS0 time slot of 2 subframes in back is idle, to be used for the measurement of terminal.
3. conventional time slot adopts the code channel of 8 SF=16 (for example to transmit downlink business, CS64k), in order to guarantee the transmission delay of data, the embodiment of the invention need send the data that originally send in 20ms in 10ms, and the code channel number that therefore needs to use is original 2 times, promptly, need to adopt the code channel of 16 SF=16, perhaps, in order to evade the link performance loss that interference brings between code channel, can adopt the code channel of 1 SF=1 to carry out downlink business (for example, transmission CS64k) at TS0.
4. Fig. 4 is 10ms reception, SF=1 code channel and the TS0 instrumentation plan of the end side of example according to the present invention, terminal is owing to receive frame 2 multiplexing parameters Repetition period=2 and Repetition length=1, multiplexing synchronously with the cycle of system, use the code channel of 1 SF=1 or 16 SF=16 to receive data at two TS0 of former frame, 2 TS0 at back one frame carry out the measurement of terminal self, and back 2 TS0 of system side are in idle state at this moment, do not have data distributing.
Under the low speed situation, adopt the scheme of TS0 carrying to compare with conventional time slot carrying scheme, link performance difference is little, and just performance has a little deterioration under high velocity environment.Given this, the scheme that the embodiment of the invention provides recommends TS0 preferentially to carry the lower CS64k downlink business of rate travel, and this process can realize in RRM.
Owing to adopted the code channel of SF=1 to transmit and used frame 2 multiplex techniques, terminal protocol does not lay down hard-and-fast rule simultaneously, can't support the terminal of this scheme for some, can upgrade with the CS64k that supports TS0 or the downlink business carrying of PS64k.
Above-mentioned case description predetermined time interval be the situation of 1 TTI, TTI for other numbers, or the time interval of other kinds, scheme that the embodiment of the invention provides and thought still are suitable for, promptly, utilize TS0 time slot bearing downlink business improving the utilance of downlink resource, but be used for all flexible configuration of the sub-frame number of bearing downlink business and transmission method, multiplexing method accordingly, the embodiment of the invention does not limit this.
Device embodiment
According to embodiments of the invention, a kind of downlink business dispensing device is provided, Fig. 5 is the structured flowchart according to the downlink business dispensing device of the embodiment of the invention.As shown in Figure 5, this device comprises: carrier module 52 is used at the fixed time bearing downlink business in the TS0 time slot of part subframe of a plurality of subframes at interval; Interleaving block 54 is connected in carrier module 52, is used for the part subframe is interweaved and sends.Preferably, above-mentioned predetermined time interval can be a TTI.Be spaced apart at the fixed time under the situation of a TTI, carrier module 52 specifically is used for the TS0 time slot bearing downlink business in the part subframe of TTI, and wherein, the part subframe is preceding two subframes of TTI.
The scheme that the embodiment of the invention provides makes that TS0 can the bearing downlink business, can guarantee simultaneously the normal measurement of terminal again, and do not need to revise agreement, has stronger practicality, but increased the descending time slot number of the bearer service of TD-SCDMA, improved the resource utilization of TD-SCDMA.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. downlink business bearing method is used for it is characterized in that in auxilliary carrier wave bearing downlink business described method comprises:
For a plurality of subframes in the predetermined time interval, bearing downlink business in the TS0 time slot of the part subframe in described a plurality of subframes.
2. method according to claim 1 is characterized in that, described predetermined time interval is a Transmission Time Interval TTI.
3. method according to claim 2 is characterized in that, the bearing downlink business comprises in the TS0 time slot of the part subframe in described a plurality of subframes:
The described downlink business of carrying in the TS0 time slot of the part subframe of described TTI, wherein, described part subframe is preceding two subframes of described TTI.
4. method according to claim 3 is characterized in that the TS0 time slot of latter two subframe of described TTI is used for the measurement of terminal.
5. method according to claim 3 is characterized in that, after the described downlink business of carrying, described method also comprises in the TS0 time slot of preceding two subframes of described TTI: the TS0 time slot to preceding two subframes of described TTI interweaves.
6. method according to claim 5 is characterized in that, preceding two subframes of described TTI were carried out after described interweaving, and described method also comprises:
In the TS0 time slot of preceding two subframes of described TTI, adopt the code channel of 1 SF=1 to transmit described downlink business; Perhaps,
In preceding two subframe TS0 time slots of described TTI, adopt the code channel of 16 SF=16 to transmit described downlink business.
7. according to each described method in the claim 1 to 6, it is characterized in that described downlink business comprises: CS64k business or PS64k business.
8. a downlink business dispensing device is characterized in that, comprising:
Carrier module is used at the fixed time bearing downlink business in the TS0 time slot of part subframe of a plurality of subframes at interval;
Interleaving block is used for described part subframe is interweaved and sends.
9. downlink business dispensing device according to claim 8 is characterized in that, described predetermined time interval is a TTI.
10. downlink business dispensing device according to claim 9 is characterized in that, described carrier module specifically is used for the described downlink business of TS0 time slot carrying in the part subframe of described TTI, and wherein, described part subframe is preceding two subframes of described TTI.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101798681A CN102045100A (en) | 2009-10-16 | 2009-10-16 | Downlink service bearing method and downlink service sending device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101798681A CN102045100A (en) | 2009-10-16 | 2009-10-16 | Downlink service bearing method and downlink service sending device |
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| CN102045100A true CN102045100A (en) | 2011-05-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104581956A (en) * | 2014-12-05 | 2015-04-29 | 大唐移动通信设备有限公司 | Frequency point distribution method and equipment |
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| US20050075125A1 (en) * | 2002-01-21 | 2005-04-07 | Bada Anna Marina | Method and mobile station to perform the initial cell search in time slotted systems |
| CN1622502A (en) * | 2003-11-27 | 2005-06-01 | 皇家飞利浦电子股份有限公司 | Method and apparatus for supporting downlink combined detection in TDD-CDMA communication system |
| CN1627663A (en) * | 2003-12-12 | 2005-06-15 | 西门子（中国）有限公司 | Method sad equipment for transferring signal in wireless communication system |
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Application publication date: 20110504 |