CN101222273A - Signal transmission method of physical control format indication channel in descending pilot frequency time slot - Google Patents
Signal transmission method of physical control format indication channel in descending pilot frequency time slot Download PDFInfo
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- CN101222273A CN101222273A CNA2008100041966A CN200810004196A CN101222273A CN 101222273 A CN101222273 A CN 101222273A CN A2008100041966 A CNA2008100041966 A CN A2008100041966A CN 200810004196 A CN200810004196 A CN 200810004196A CN 101222273 A CN101222273 A CN 101222273A
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Abstract
The invention relates to a physical control format indication channel signal sending method in a downlink pilot frequency time slot, which is characterized in that: an orthogonal frequency division multiplexing OFDM symbol position of a physical control format indication channel signal sent from the downlink pilot frequency time slot by a base station is different from an OFDM symbol position of a master synchronizing channel signal or an auxiliary synchronizing channel signal. The method of the invention solves the problem of the collision between the physics control format indication channel signal and the synchronizing channel signal, considers making the time delay for sending the physical control format indication channel signal smaller as possible, thereby having small influence on other channels and is convenient for other channels treatment.
Description
Technical field
The present invention relates to the signaling method of communication system physical channel, relate in particular to signal transmission method of physical control format indication channel in the physical channel descending pilot frequency time slot.
Background technology
The frame structure of LTE (Long Term Evolution, Long Term Evolution) system's time division multiplexing (TDD, TimeDivision Duplex) pattern as shown in Figure 1.In this frame structure, the radio frames of a 10ms is divided into two fields, it is the 0.5ms time slot that each field is divided into 10 length, two time slots are formed the subframe that length is 1ms, comprise 10 subframes (numbering from 0 to 9) in the radio frames, comprise 20 time slots (numbering from 0 to 19) in the radio frames.For length is regular circulation prefix (the Cyclic Prefix of 5.21 μ s and 4.69 μ s, CP), time slot comprise 7 length be 66.7 μ s on/descending symbol (7 * 66.7 μ s), wherein first symbol cyclic prefix length is 5.21 μ s, and the circulating prefix-length of all the other 6 symbols is 4.69 μ s; For length is the extended cyclic prefix of 16.67 μ s, and time slot comprises on 6/descending symbol.In addition, in this frame structure, the preparation characteristics of subframe are:
● subframe 0 and subframe 5 are fixed for downlink transfer;
● support that 5ms and 10ms are the up-downgoing switching in cycle;
● subframe 1 and subframe 6 are special subframe; as transmitting 3 special time slots: descending pilot frequency time slot (DwPTS, Downlink Pilot Time Slot), protection be (GP, Guard Period) and uplink pilot time slot (UpPTS at interval; Uplink Pilot Time Slot), wherein:
DwPTS is used for downlink transfer;
GP is a guard time, does not transmit any data;
UpPTS is used for uplink, comprises 2 up SC-FDMA symbols at least and is used for transmitting physical random access channel PRACH (Physical Random Access CHannel).
● when the up-downgoing in 5ms cycle was switched, subframe 2 and subframe 7 were fixed for uplink;
● when 10ms cycle up-downgoing was switched, DwPTS was present in two fields, and GP and UpPTS are present in first field, and the DwPTS duration in second field is 1ms, and subframe 2 is used for uplink, and subframe 7 is used for downlink transfer to subframe 9;
● send on first OFDM (OFDM, Orthogonal Frequency DivisionMultiplexing) symbol of primary synchronization channel (P-SCH, Primary-Synchronization Channel) signal in DwPTS; Auxiliary synchronization channel (S-SCH, Secondary-SynchronizationChannel) signal sends on last the OFDM symbol on time slot 1 and the time slot 11; Physical Control Format Indicator Channel (PCFICH, Physical Control Format Indicator Channel) signal sends on first OFDM symbol in the general subframe of being useful on downlink transfer.
If the Physical Control Format Indicator Channel signal still uses sending method transmission in general subframe in DwPTS, and, master sync signal also remains on first OFDM symbol of DwPTS and sends, the two frequent position of physics of shining upon on first OFDM symbol of DwPTS can clash, therefore, need a kind of technical scheme that solve master sync signal and Physical Control Format Indicator Channel signal conflict problem among the DwPTS.
Summary of the invention
Technical problem to be solved by this invention provides signal transmission method of physical control format indication channel in a kind of descending pilot frequency time slot, can avoid the Physical Control Format Indicator Channel signal to clash with the primary synchronization channel signal in descending pilot frequency time slot.
In order to solve the problems of the technologies described above, the invention provides signal transmission method of physical control format indication channel in a kind of descending pilot frequency time slot, its characteristics are: the base station sends the orthogonal frequency division multiplex OFDM character position of Physical Control Format Indicator Channel signal in descending pilot frequency time slot different with the OFDM character position of primary synchronization channel signal or auxiliary synchronization channel signal.
Further, this method is applied to the long evolving system of time division multiplexing, and in the frame structure of this system, the radio frames of a 10ms is divided into two fields, each field is divided into 10 length and is the 0.5ms time slot, by two time slots subframe that to form a length be 1ms; Comprise 10 subframes in the radio frames, the numbering of subframe from 0 to 9; Comprise 20 time slots in the radio frames, the numbering of time slot from 0 to 19, this descending pilot frequency time slot is arranged in subframe 1 and subframe 6.
Further, this descending pilot frequency time slot contains a plurality of OFDM symbols; Send the Physical Control Format Indicator Channel signal on first OFDM character position in descending pilot frequency time slot of base station.
Further, send the primary synchronization channel signal on last the OFDM symbol in time slot 1 and time slot 11 of base station, send the auxiliary synchronization channel signal on the 3rd the OFDM character position in descending pilot frequency time slot.
Further, send the auxiliary synchronization channel signal on last the OFDM character position in time slot 1 and time slot 11 of base station, send the primary synchronization channel signal on the 3rd the OFDM character position in descending pilot frequency time slot.
Further, send the primary synchronization channel signal on last the OFDM character position in time slot 1 and time slot 11 of base station, and send the auxiliary synchronization channel signal on the penult OFDM character position in time slot 1 and time slot 11.
Further, descending pilot frequency time slot contains a plurality of OFDM symbols; Base station the above Physical Control Format Indicator Channel signal of second OFDM character position in descending pilot frequency time slot.
Further, send the primary synchronization channel signal on first OFDM character position in descending pilot frequency time slot of described base station.
Adopt signal transmission method of physical control format indication channel in the descending pilot frequency time slot of the present invention, both solved the problem of Physical Control Format Indicator Channel signal and synchronous channel signal conflict in DwPTS, consider also simultaneously that the time delay that this Physical Control Format Indicator Channel signal is sent is less, thereby less to other channel effect, be convenient to other Channel Processing.
Description of drawings
Fig. 1 is the frame structure schematic diagram of long evolving system tdd mode;
Fig. 2 sends an embodiment of Physical Control Format Indicator Channel signal in DwPTS for the present invention;
Fig. 3 sends another embodiment of Physical Control Format Indicator Channel signal in DwPTS for the present invention;
Fig. 4 sends another embodiment of Physical Control Format Indicator Channel signal in DwPTS for the present invention;
Fig. 5 sends another embodiment of Physical Control Format Indicator Channel signal in DwPTS for the present invention.
Embodiment
Signal transmission method of physical control format indication channel among the descending pilot frequency time slot DwPTS of the present invention mainly is will in DwPTS the OFDM character position of Physical Control Format Indicator Channel signal transmission and the OFDM character position of main and auxiliary synchronous channel signal transmission be staggered by the base station; Simultaneously, reduce the time delay that the Physical Control Format Indicator Channel signal sends as much as possible, thereby avoid effectively that Physical Control Format Indicator Channel signal and main and auxiliary synchronizing signal clash in DwPTS.
Below in conjunction with embodiment and accompanying drawing technique scheme of the present invention is at length explained.
As shown in Figure 2, be the specific embodiment that the Physical Control Format Indicator Channel signal sends in DwPTS of the present invention.In the LTE system, the radio frames of a 10ms is divided into two fields, it is the 0.5ms time slot that each field is divided into 10 length, two time slots are formed the subframe that length is 1ms, comprise 10 subframes (numbering from 0 to 9) in the radio frames, comprise 20 time slots (numbering from 0 to 19) in the radio frames.In the regular circulation prefix, a subframe includes 14 OFDM symbols, suppose, DwPTS includes 3 OFDM symbols, the up-downgoing switching cycle is 5ms, the base station will send on primary synchronization channel signal first OFDM symbol in DwPTS, will send on second OFDM symbol of Physical Control Format Indicator Channel signal in DwPTS.
As shown in Figure 3, be another specific embodiment that Physical Control Format Indicator Channel sends in DwPTS of the present invention.In the LTE system, the radio frames of a 10ms is divided into two fields, it is the 0.5ms time slot that each field is divided into 10 length, two time slots are formed the subframe that length is 1ms, comprise 10 subframes (numbering from 0 to 9) in the radio frames, comprise 20 time slots (numbering from 0 to 19) in the radio frames.In the regular circulation prefix, a subframe includes 14 OFDM symbols, suppose, DwPTS includes 3 OFDM symbols, the up-downgoing switching cycle is 5ms, the base station will send on primary synchronization channel signal last OFDM symbol in time slot 1 and time slot 11, will send on the 3rd the OFDM symbol of auxiliary synchronization channel signal in DwPTS, will send on Physical Control Format Indicator Channel signal first OFDM symbol in DwPTS.
As shown in Figure 4, be another specific embodiment that in DwPTS, sends of the present invention for Physical Control Format Indicator Channel.In the LTE system, the radio frames of a 10ms is divided into two fields, it is the 0.5ms time slot that each field is divided into 10 length, two time slots are formed the subframe that length is 1ms, comprise 10 subframes (numbering from 0 to 9) in the radio frames, comprise 20 time slots (numbering from 0 to 19) in the radio frames.In the regular circulation prefix, a subframe includes 14 OFDM symbols, suppose, DwPTS includes 3 OFDM symbols, the up-downgoing switching cycle is 5ms, the base station will send on auxiliary synchronization channel signal last OFDM symbol in time slot 1 and time slot 11, will send on the 3rd the OFDM symbol of primary synchronization channel signal in DwPTS, will send on Physical Control Format Indicator Channel signal first OFDM symbol in DwPTS.
As shown in Figure 5, be another specific embodiment that Physical Control Format Indicator Channel sends in DwPTS of the present invention.In the LTE system, the radio frames of a 10ms is divided into two fields, it is the 0.5ms time slot that each field is divided into 10 length, two time slots are formed the subframe that length is 1ms, comprise 10 subframes (numbering from 0 to 9) in the radio frames, comprise 20 time slots (numbering from 0 to 19) in the radio frames.In the regular circulation prefix, a subframe includes 14 OFDM symbols, suppose, DwPTS includes 3 OFDM symbols, the up-downgoing switching cycle is 5ms, send on primary synchronization channel signal last OFDM symbol in time slot 1 and time slot 11, send on the penult OFDM symbol of auxiliary synchronization channel signal in time slot 1 and time slot 11, send on Physical Control Format Indicator Channel signal first OFDM symbol in DwPTS.
The foregoing description that the present invention exemplifies; all make main and auxiliary synchronous channel signal and the Physical Control Format Indicator Channel signal OFDM character position in DwPTS stagger; simultaneously; in order to consider that the time delay that the Physical Control Format Indicator Channel signal is sent reduces as far as possible; therefore send on first or second OFDM character position of Physical Control Format Indicator Channel signal in DwPTS; and main and auxiliary synchronous channel signal is so long as send on the OFDM character position different with the Physical Control Format Indicator Channel signal, all should be in the present invention's scope required for protection.
The above is embodiments of the 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 the claim scope of the present invention.
Claims (8)
1. signal transmission method of physical control format indication channel in the descending pilot frequency time slot, it is characterized in that the base station sends the orthogonal frequency division multiplex OFDM character position of described Physical Control Format Indicator Channel signal in described descending pilot frequency time slot different with the OFDM character position that sends primary synchronization channel signal or auxiliary synchronization channel signal.
2. in accordance with the method for claim 1, it is characterized in that, described method is applied to the long evolving system of time division multiplexing, in the frame structure of described system, the radio frames of a 10ms is divided into two fields, each field is divided into 10 length and is the 0.5ms time slot, by two time slots subframe that to form a length be 1ms; Comprise 10 subframes in the radio frames, the numbering of described subframe from 0 to 9; Comprise 20 time slots in the radio frames, the numbering of described time slot from 0 to 19, described descending pilot frequency time slot is arranged in subframe 1 and subframe 6.
3. in accordance with the method for claim 2, it is characterized in that described descending pilot frequency time slot contains a plurality of described OFDM symbols; Send described Physical Control Format Indicator Channel signal on first OFDM character position in described descending pilot frequency time slot of described base station.
4. in accordance with the method for claim 3, it is characterized in that, send described primary synchronization channel signal on last the OFDM character position in time slot 1 and time slot 11 of described base station, send described auxiliary synchronization channel signal on the 3rd the OFDM character position in described descending pilot frequency time slot.
5. in accordance with the method for claim 3, it is characterized in that, send described auxiliary synchronization channel signal on last the OFDM character position in time slot 1 and time slot 11 of described base station, send described primary synchronization channel signal on the 3rd the OFDM character position in described descending pilot frequency time slot.
6. in accordance with the method for claim 3, it is characterized in that, send described primary synchronization channel signal on last the OFDM character position in time slot 1 and time slot 11 of described base station, and send described auxiliary synchronization channel signal on the penult OFDM character position in described time slot 1 and described time slot 11.
7. in accordance with the method for claim 2, it is characterized in that described descending pilot frequency time slot contains a plurality of described OFDM symbols; Send described Physical Control Format Indicator Channel signal on second OFDM character position of described base station in described descending pilot frequency time slot.
8. in accordance with the method for claim 7, it is characterized in that, send described primary synchronization channel signal on first OFDM character position in described descending pilot frequency time slot of described base station.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100041966A CN101222273A (en) | 2008-01-29 | 2008-01-29 | Signal transmission method of physical control format indication channel in descending pilot frequency time slot |
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| CNA2008100041966A CN101222273A (en) | 2008-01-29 | 2008-01-29 | Signal transmission method of physical control format indication channel in descending pilot frequency time slot |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009097821A1 (en) * | 2008-02-03 | 2009-08-13 | Da Tang Mobile Communications Equipment Co., Ltd. | Method and device for downlink transmission |
| CN101651996A (en) * | 2009-09-17 | 2010-02-17 | 中兴通讯股份有限公司 | Method and system for transmitting index of component carrier and control format indicating value |
| CN103098394A (en) * | 2011-09-01 | 2013-05-08 | 华为技术有限公司 | Method, device and communication system for handling signal collision |
| WO2017132993A1 (en) * | 2016-02-05 | 2017-08-10 | 华为技术有限公司 | Control information transmission method and apparatus |
| CN110557237A (en) * | 2015-11-25 | 2019-12-10 | 上海朗帛通信技术有限公司 | Wireless communication method and device for reducing network delay |
| US11323990B2 (en) | 2017-01-06 | 2022-05-03 | Huawei Technologies Co., Ltd. | Receiving node, sending node, and transmission method |
-
2008
- 2008-01-29 CN CNA2008100041966A patent/CN101222273A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009097821A1 (en) * | 2008-02-03 | 2009-08-13 | Da Tang Mobile Communications Equipment Co., Ltd. | Method and device for downlink transmission |
| CN101651996A (en) * | 2009-09-17 | 2010-02-17 | 中兴通讯股份有限公司 | Method and system for transmitting index of component carrier and control format indicating value |
| WO2011032397A1 (en) * | 2009-09-17 | 2011-03-24 | 中兴通讯股份有限公司 | Transmission method and system for index and control format indicator value of component carriers |
| CN101651996B (en) * | 2009-09-17 | 2015-05-13 | 中兴通讯股份有限公司 | Method and system for transmitting index of component carrier and control format indicating value |
| CN103098394A (en) * | 2011-09-01 | 2013-05-08 | 华为技术有限公司 | Method, device and communication system for handling signal collision |
| CN103098394B (en) * | 2011-09-01 | 2014-11-05 | 华为技术有限公司 | Method, device and communication system for handling signal collision |
| CN110557237A (en) * | 2015-11-25 | 2019-12-10 | 上海朗帛通信技术有限公司 | Wireless communication method and device for reducing network delay |
| WO2017132993A1 (en) * | 2016-02-05 | 2017-08-10 | 华为技术有限公司 | Control information transmission method and apparatus |
| US11323990B2 (en) | 2017-01-06 | 2022-05-03 | Huawei Technologies Co., Ltd. | Receiving node, sending node, and transmission method |
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Application publication date: 20080716 |