CN101541080A - Paging signal sending method in time division duplex system - Google Patents
Paging signal sending method in time division duplex systemDownload PDFInfo
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- CN101541080A CN101541080ACN 200810085776CN200810085776ACN101541080ACN 101541080 ACN101541080 ACN 101541080ACN 200810085776CN200810085776CN 200810085776CN 200810085776 ACN200810085776 ACN 200810085776ACN 101541080 ACN101541080 ACN 101541080A
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Abstract
Description
Technical field
The present invention relates to moving communicating field, particularly relate to the sending method of paging signal in the tdd systems.
Background technology
With reference to shown in Figure 1, be present the 3rd third-generation mobile communication time division duplex (Time Divided Duplex, TDD) long evolving system (Long-Term Evolution, frame structure schematic diagram LTE).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, per two time slots are formed the subframe that length is 1ms, comprise 10 subframes (numbering from 0 to 9) in such radio frames, and comprise 20 time slots (numbering from 0 to 19) in a radio frames.
Cyclic Prefix (Cyclic Prefix at symbol, CP) be the regular circulation prefix, be that circulating prefix-length is under the situation of 5.21 μ s and 4.69 μ s, time slot comprise 7 length be 66.7 μ s on/descending symbol, 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; Cyclic Prefix at symbol is an extended cyclic prefix, and promptly circulating prefix-length is under the situation of 16.67 μ s, and time slot comprises on 6/descending symbol.In addition, this frame structure also comprises following characteristics:
(1)subframe 0 andsubframe 5 are fixed for downlink transfer;
(2) support that 5ms and 10ms are the up-downgoing conversion of assignment period;
(3)subframe 1 andsubframe 6 are special subframe; comprise 3 special time slots respectively; these 3 special time slots are designated descending pilot frequency time slot (Downlink Pilot TimeSlot respectively; DwPTS), protection interval (Guard Period; GP) and go up the every trade pilot time slot (Uplink Pilot TimeSlot, UpPTS).
Wherein, DwPTS is used for downlink transfer; GP is a guard time, does not transmit any data; UpPTS is used for uplink, can be used for transmitting physical random access channel PRACH (Physical RandomAccess Channel) and surveys reference symbol SRS (Sounding Reference symbol); DwPTS, GP, the OFDM that the UpPTS time slot comprises (Orthogonal Frequency Division Multiplexing, OFDM) symbolic number can be set to different values according to different application scenarioss; Wherein DwPTS is minimum comprises 3 OFDM symbols, and UpPTS is minimum to comprise 1 OFDM symbol.
With reference to shown in Figure 2, the symbolic construction schematic diagram that is comprised for the DwPTS time slot.In preceding 3 symbols of DwPTS time slot, the 1st and the 2nd symbol is used for sending downgoing control signal as physical downlink control channel PDCCH (Physical Downlink Control Channel); The 3rd symbol is used for sending master sync signal PSS (Primary-Synchronization Signal) as primary synchronization channel P-SCH (Primary-Synchronization Channel), 1.25MHz in the middle of wherein P-SCH only takies on this symbol frequency domain.
With reference to shown in Figure 3, the OFMD symbolic number scale that may comprise for thesubframe 1 in the frame structure of tdd systems in the existing LTE technology and each special time slot in the subframe 6.The variable purpose of symbolic number of the special time slot insubframe 1 and the subframe 6 (being DwPTS, GP and UpPTS time slot) is the GP that has distinct symbols length in order to provide, to support the sub-district of different big minor radius.Wherein comprise 3 OFDM symbols when DwPTS is minimum, UpPTS is minimum when comprising 1 OFDM symbol, and GP comprises 10 OFDM, to support the sub-district of the most about 100 kilometers radiuses.Under minimum other situation that comprises outside 3 OFDM symbols of DwPTS, DwPTS all comprises 8 or 9 OFDM symbols at least, just as shown in Figure 2, in these symbols except 3 OFDM outer symbols as PDCCH and P-SCH, other symbol is as PDSCH (Physical Downlink ShareChannel, Physical Downlink Shared Channel), can be used for sending other downstream signal.
In the LTE system, paging signal, promptly the data on PCCH (Paging Control Channel, Paging Control Channel) logic channel and PCH (Paging Channel, the paging channel) transmission channel send on the PDSCH channel.
With reference to shown in Figure 4, be the configuration schematic diagram of paging radio frames in a paging cycle and paging wireless sub-frame.Power consumption when saving the terminal monitoring paging signal, paging signal adopts discontinuous transmission/reception according to the cycle (is unit with the radio frames) of configuration, i.e. (Discontinuo μ s Transmission, DTX)/(Discontinuo μ s Reception, DRX) mode sends and receives, as shown in Figure 4, by the radio frames configuration paging DTX/DRX cycle; In one-period, dispose some particular radio frames and send paging signal, these frames are referred to as the paging radio frames; Exemplary having provided in a paging radio frames among the figure disposed some specific sub-frame and sent paging signal, and these frames are referred to as the paging subframe.Wherein, the paging radio frames position in each paging DTX/DRX cycle is identical, and the position of the paging subframe in each paging frame is identical.A paging subframe is referred to as paging occasion (PagingOccasion).In a paging, need to determine that corresponding paging occasion sends paging signal at a terminal.Therefore, in paging, need to determine the paging radio frames of terminal correspondence in a paging DTX/DRX cycle and the paging subframe in the paging radio frames.Usually, the paging DTX/DRX cycle of disposing in sub-district, the paging radio frames, and the paging number of sub frames is to be configured according to the number of users in the sub-district.And, during paging subframe position in configuration paging radio frames, also need to consider the terminal number of each paging paging simultaneously, and paging signal and other signal, such as MBMS (Multi-Broadcast Multi-media Sevice, the multimedia broadcasting and multicast function) signal, influencing each other when a subframe sends.
Like this, how to set out the sending method of rational paging signal,, become the problem that the technical staff must consider to satisfy the needs that paging signal is sent.
Summary of the invention
Technical problem to be solved by this invention provides the method that sends paging signal in the paging subframe in the paging radio frames in a kind of frame structure of the tdd systems at LTE, satisfies the needs that paging signal sends, and has the implementation method characteristic of simple.
In order to solve the problems of the technologies described above, the invention provides paging signal sending method in a kind of tdd systems, described method comprises:
To be fixed for the subframe of downlink transfer in the paging radio frames, and/or the subframe that includes the special time slot that is fixed for downlink transfer is set to the paging subframe, paging signal is mapped in the described paging subframe then, send.
Further, the described subframe that is fixed for downlink transfer issubframe 0 andsubframe 5, the described subframe that includes the special time slot that is fixed for downlink transfer issubframe 1 andsubframe 6, and special time slot wherein is the descending pilot frequency time slot ofsubframe 1 and the descending pilot frequency time slot ofsubframe 6.
Further, described method comprises:
When only need be when a paging subframe sends paging signal, in paging radio frames insubframe 0,subframe 1,subframe 5, thesubframe 6 any one is set to the paging subframe, and any one that described paging signal is mapped in describedsubframe 0,subframe 1,subframe 5, thesubframe 6 sends.
Further, described method comprises:
When needs when two paging subframes send paging signal, be set to the paging subframe with any two insubframe 0,subframe 1,subframe 5, thesubframe 6 in the paging radio frames, any two that described paging signal is mapped in describedsubframe 0,subframe 1,subframe 5, thesubframe 6 send.
Further, described method comprises:
When needs when four paging subframes send paging signal, withsubframe 0 in the paging radio frames,subframe 1,subframe 5 andsubframe 6 are set to the paging subframe, and described paging signal is mapped in describedsubframe 0,subframe 1,subframe 5 andsubframe 6 send.
Further, in describedsubframe 1 andsubframe 6, paging signal only sends on therein the descending pilot frequency time slot.
Further, in described descending pilot frequency time slot, paging signal only sends on other OFDM symbol except that preceding 3 OFDM symbols.
Further,, can only select a kind of paging subframe set-up mode, and described paging subframe set-up mode be sent to terminal by the high-level signaling of system information broadcast or terminal-specific for a sub-district.
Further, described method also comprises: a radio frames in per 4 or per 8 radio frames is configured to the paging radio frames.
This paging subframe position collocation method, the benefit that is paging signal sending method is, in the frame structure of the tdd systems of LTE,subframe 0,subframe 5, and the DwPTS time slot insubframe 1 and thesubframe 6, be fixed for downlink transfer, be not subjected to the influence of other subframe uplink-downlink configuration in this frame structure.Whilesubframe 0,subframe 5, the DwPTS time slot that reaches insubframe 1 and thesubframe 6 is not used for sending the MBMS signal, so the transmission of paging signal is not subjected to the influence of other signal transmission.Thereby the needs that paging signal sends had both been satisfied, simplified simultaneously the method for configuration paging subframe in the paging radio frames of tdd systems again, and be provided with the sending method of different concrete paging signals according to different needs, satisfied the needs of practical application better.
Description of drawings
Fig. 1 is the frame structure schematic diagram of the tdd systems of LTE as herein described;
The symbolic construction schematic diagram that Fig. 2 is comprised for the DwPTS time slot.
The OFMD symbolic number scale that Fig. 3 may comprise for thesubframe 1 in the frame structure of tdd systems in the existing LTE technology and each special time slot in thesubframe 6;
Fig. 4 is the paging radio frames in a paging cycle and the configuration schematic diagram of paging wireless sub-frame.
Fig. 5 is the paging signal sending method flow chart of one embodiment of the present of invention;
The paging subframe position schematic diagram of Fig. 6 in the paging radio frames, disposing among the embodiment shown in Figure 5;
Fig. 7 is the first application example schematic diagram of the present invention;
Fig. 8 is the second application example schematic diagram of the present invention;
Fig. 9 is the 3rd an application example schematic diagram of the present invention.
Embodiment
Main thought of the present invention is that paging signal is mapped in the subframe that is fixed for downlink transfer, perhaps be mapped in the subframe that includes the special time slot that is fixed for downlink transfer, send then, thereby make the configuration of paging signal not be subjected to the influence of other subframe uplink-downlink configuration in this frame structure.Simultaneously because described subframe, perhaps the special time slot in the subframe is not used for sending the MBMS signal, therefore can guarantee the influence that the transmission of paging signal is not sent by other signal.
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail.
With reference to shown in Figure 5, be the paging signal sending method flow chart of one embodiment of the present of invention.Described method comprises:
Step 501: judgement need be disposed several paging subframes and is used to send paging signal in a paging radio frames; Dispose one if desired, then execution instep 502; Dispose two if desired, then execution instep 504; Dispose four if desired, then execution instep 506;
Paging signal can comprise the paging to a plurality of terminals, in actual applications, by system or network side configuration paging subframe, and paging signal is mapped to the paging subframe sends, when in actual applications the paging subframe being configured, can consider according to the combined factors such as number of users, user's closeness and radius of society of sub-district, and select suitable paging sub-frame number.Generally speaking, if number of users is big, the paging resource that then needs is that paging occasion is also a lot of accordingly, will polygamy puts the quantity of paging subframe.
Step 502: if having only a paging subframe in the paging radio frames, promptly only with a paging subframe bearing call signal, then with this paging sub-frame configuration insubframe 0 orsubframe 5;
Step 503: paging signal is mapped onsubframe 0 or thesubframe 5 then and sends process ends;
Certainly, alsopaging signal subframe 1 can be mapped to orsubframe 6 sends, purpose of the present invention can be realized equally.
Step 504: if two paging subframes are arranged in the paging radio frames, promptly use two paging subframe bearing call signals, then these two paging subframes are configured insubframe 0 andsubframe 5 respectively;
Step 505: paging signal is mapped onsubframe 0 and thesubframe 5 then and sends process ends;
Certainly, paging signal can be mapped tosubframe 1 andsubframe 6 sends yet, in fact, as long as paging signal is mapped insubframe 0,subframe 1,subframe 5, thesubframe 6 any two, can realize purpose of the present invention equally, the present invention is not limited this.
Step 506: if four paging subframes are arranged in the paging radio frames, promptly use four paging subframe bearing call signals, then these four paging subframes are configured insubframe 0 respectively,subframe 1,subframe 5 andsubframe 6;
Step 507: paging signal is mapped onsubframe 0,subframe 1,subframe 5 and thesubframe 6 then and sends the flow process end.
Certainly, when three paging subframes are arranged in the paging radio frames, can selecting 3 be used to send paging signal arbitrarily fromsubframe 0,subframe 1,subframe 5 andsubframe 6.
Wherein, when paging signal was mapped tosubframe 1 andsubframe 6, paging signal only sent on the DwPTS time slot ofsubframe 1 andsubframe 6, and is, paging signal only sends on other OFDM symbol except that preceding 3 OFDM in the DwPTS time slot.This is because preceding 3 symbols in the DwPTS time slot as physical downlink control channel PDCCH and primary synchronization channel P-SCH, are used for sending downgoing control signal and master sync signal respectively.
With reference to shown in Figure 6, be the paging subframe position schematic diagram that in the paging radio frames, disposes among the embodiment shown in Figure 5; As can be seen from Figure, when having only a paging subframe in the paging radio frames, with this paging sub-frame configuration insubframe 0; When in the paging radio frames two paging subframes being arranged, with this paging sub-frame configuration insubframe 0 andsubframe 5; When in the paging radio frames four paging subframes being arranged, with this paging sub-frame configuration in the DwPTS time slot ofsubframe 0,subframe 1, in the DwPTS time slot ofsubframe 5 andsubframe 6.
It is pointed out that for a sub-district, can only select a kind of paging sub-frame configuration mode, and send to terminal by the high-level signaling of system information broadcast or terminal-specific.
Below in conjunction with the example in concrete the application technical solution of the present invention is carried out exemplary illustration.
With reference to shown in Figure 7, be the first application example schematic diagram of the present invention.In this example, application scenarios is in the intensive sub-district of user, radius of society is very little, it is very big to be used for number of users, in order to satisfy certain QoS (Quality of Service, service quality) requirement, the paging resource that needs, be that paging occasion is also a lot of accordingly, therefore, can do the relevant configuration of following paging:
The paging DTX/DRX cycle is configured to 256 radio frames, all radio frames all are configured to the paging radio frames,subframe 0 in each radio frames,subframe 1,subframe 5, all be configured to send paging signal withsubframe 6, wherein insubframe 1 andsubframe 6, paging signal only sends on therein the DwPTS time slot.Wherein the DwPTS time slot configuration becomes to comprise 12 OFDM symbols, and paging signal only sends on the 4th to the 12nd OFDM symbol in the DwPTS time slot.
With reference to shown in Figure 8, be the second application example schematic diagram of the present invention.In this example, application scenarios is that it is bigger to be used for number of users in the sub-district of user than comparatively dense, can do the relevant configuration of following paging:
The paging DTX/DRX cycle is configured to 256 radio frames, a radio frames in per 4 radio frames is configured to the paging radio frames, as the N+4 among the figure, N+8, ..., until N+256 radio frames be configured to the paging radio frames, be example with N+8 radio frames among the figure, exemplary has provided in each paging radio frames,subframe 0 wherein,subframe 5 are configured to send paging signal.
With reference to shown in Figure 9, be the 3rd application example schematic diagram of the present invention.In this example, application scenarios is that it is little to be used for number of users, can do the relevant configuration of following paging in the not intensive sub-district of user:
The paging DTX/DRX cycle is configured to 256 radio frames, a radio frames in per 8 radio frames is configured to the paging radio frames, as the N+8 among the figure, ..., until N+256 radio frames is configured to the paging radio frames, be example with N+8 radio frames among the figure, exemplary has provided in each paging radio frames, andsubframe 0 wherein is configured to send paging signal.
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 (10)
1, paging signal sending method in a kind of tdd systems is characterized in that, described method comprises:
To be fixed for the subframe of downlink transfer in the paging radio frames, and/or the subframe that includes the special time slot that is fixed for downlink transfer is set to the paging subframe, paging signal is mapped in the described paging subframe then, send.
2, the method for claim 1, it is characterized in that, the described subframe that is fixed for downlink transfer is subframe 0 and subframe 5, the described subframe that includes the special time slot that is fixed for downlink transfer is subframe 1 and subframe 6, and special time slot wherein is the descending pilot frequency time slot of subframe 1 and the descending pilot frequency time slot of subframe 6.
3, method as claimed in claim 2 is characterized in that, described method comprises:
When only need be when a paging subframe sends paging signal, in paging radio frames in subframe 0, subframe 1, subframe 5, the subframe 6 any one is set to the paging subframe, and any one that described paging signal is mapped in described subframe 0, subframe 1, subframe 5, the subframe 6 sends.
4, as any described method of claim 1 to 3, it is characterized in that described method comprises:
When needs when two paging subframes send paging signal, be set to the paging subframe with any two in subframe 0, subframe 1, subframe 5, the subframe 6 in the paging radio frames, any two that described paging signal is mapped in described subframe 0, subframe 1, subframe 5, the subframe 6 send.
5, method as claimed in claim 4 is characterized in that, described method comprises:
When needs when four paging subframes send paging signal, with subframe 0 in the paging radio frames, subframe 1, subframe 5 and subframe 6 are set to the paging subframe, and described paging signal is mapped in described subframe 0, subframe 1, subframe 5 and subframe 6 send.
6, method as claimed in claim 2 is characterized in that, in described subframe 1 and subframe 6, paging signal only sends on therein the descending pilot frequency time slot.
7, method as claimed in claim 5 is characterized in that, in described subframe 1 or subframe 6, paging signal only sends on therein the descending pilot frequency time slot.
8, method as claimed in claim 6 is characterized in that, in described descending pilot frequency time slot, paging signal only sends on other OFDM symbol except that preceding 3 OFDM symbols.
9, method as claimed in claim 5 is characterized in that, for a sub-district, can only select a kind of paging subframe set-up mode, and by the high-level signaling of system information broadcast or terminal-specific described paging subframe set-up mode is sent to terminal.
10, the method for claim 1 is characterized in that, described method also comprises: a radio frames in per 4 or per 8 radio frames is configured to the paging radio frames.
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| CN2008100857762ACN101541080B (en) | 2008-03-20 | 2008-03-20 | Paging signal sending method in time division duplex system |
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| CN2008100857762ACN101541080B (en) | 2008-03-20 | 2008-03-20 | Paging signal sending method in time division duplex system |
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| CN101541080Atrue CN101541080A (en) | 2009-09-23 |
| CN101541080B CN101541080B (en) | 2012-01-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017059714A1 (en)* | 2015-10-10 | 2017-04-13 | 中兴通讯股份有限公司 | Paging processing method and device |
| WO2018059587A1 (en)* | 2016-09-30 | 2018-04-05 | 中兴通讯股份有限公司 | Data transmitting and receiving methods and devices, base station, and terminal |
| WO2019192006A1 (en)* | 2018-04-05 | 2019-10-10 | Panasonic Intellectual Property Corporation Of America | Paging occasion design in new radio |
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| US6005854A (en)* | 1997-08-08 | 1999-12-21 | Cwill Telecommunication, Inc. | Synchronous wireless access protocol method and apparatus |
| CN100486144C (en)* | 2003-04-15 | 2009-05-06 | 大唐移动通信设备有限公司 | Method of raising transmission speed in multi-slot CDMA radio communication system |
| CN1832378B (en)* | 2005-03-11 | 2011-05-11 | 大唐移动通信设备有限公司 | Method for radio transmission using high-efficient high performance frame structure for wide-band TDD system |
| CN1905428B (en)* | 2005-07-25 | 2010-08-18 | 上海原动力通信科技有限公司 | Transmission method of TDD mobile communication system with low delay character |
- 2008
- 2008-03-20CNCN2008100857762Apatent/CN101541080B/enactiveActive
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017059714A1 (en)* | 2015-10-10 | 2017-04-13 | 中兴通讯股份有限公司 | Paging processing method and device |
| CN106572533A (en)* | 2015-10-10 | 2017-04-19 | 中兴通讯股份有限公司 | Paging processing method and apparatus thereof |
| CN108141839A (en)* | 2015-10-10 | 2018-06-08 | 中兴通讯股份有限公司 | Paging processing method and device |
| CN106572533B (en)* | 2015-10-10 | 2020-09-11 | 中兴通讯股份有限公司 | Paging processing method and device |
| WO2018059587A1 (en)* | 2016-09-30 | 2018-04-05 | 中兴通讯股份有限公司 | Data transmitting and receiving methods and devices, base station, and terminal |
| CN107889216A (en)* | 2016-09-30 | 2018-04-06 | 中兴通讯股份有限公司 | Data sending, receiving method and device, base station, terminal |
| CN107889216B (en)* | 2016-09-30 | 2022-04-29 | 中兴通讯股份有限公司 | Data transmitting and receiving method and device, base station and terminal |
| WO2019192006A1 (en)* | 2018-04-05 | 2019-10-10 | Panasonic Intellectual Property Corporation Of America | Paging occasion design in new radio |
| US11356976B2 (en) | 2018-04-05 | 2022-06-07 | Panasonic Intellectual Property Corporation Of America | Paging occasion design in new radio |
| US11751167B2 (en) | 2018-04-05 | 2023-09-05 | Panasonic Intellectual Property Corporation Of America | Paging occasion design in new radio |
| US12082152B2 (en) | 2018-04-05 | 2024-09-03 | Panasonic Intellectual Property Corporation Of America | Paging occasion design in new radio |
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| CN101541080B (en) | 2012-01-11 |
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