CN101425889A - Synchronization method and system in non-scheduling transmission - Google Patents
Synchronization method and system in non-scheduling transmission Download PDFInfo
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- CN101425889A CN101425889A CN200710176561.7A CN200710176561A CN101425889A CN 101425889 A CN101425889 A CN 101425889A CN 200710176561 A CN200710176561 A CN 200710176561A CN 101425889 A CN101425889 A CN 101425889A
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Abstract
The invention discloses a synchronous method in non-dispatching transmission, which is used for realizing uplink synchronization in non-dispatching transmission. The method comprises the steps: after non-uplink business data at a terminal side is sent, information used for synchronous control is sent to a network side; the network side receives the information, and carries out synchronous estimation according to the information; and the network side carries out synchronous control according to a result terminal of the synchronous estimation. The invention also discloses user equipment, a network side device and a system.
Description
Technical field
The present invention relates to the communications field, particularly relate to method for synchronous and system in the non-scheduled transmission.
Background technology
Because business such as speech, data at a high speed and multimedia will more effectively be integrated in the near future.(operation cost that can make operator more effectively manage whole network and reduction network is simultaneously than being easier to release new business for Internet Protocol, IP) technology while voice-over, at a high speed data and multimedia service to utilize Internet protocol.Therefore, 3-G (Generation Three mobile communication system) collaborative project (3rd Generation Partnership Project, 3GPP) organize the High Speed Uplink Packet of meeting the tendency to insert (High-Speed Uplink Packet Access, HSUPA) promptly become Wideband Code Division Multiple Access (WCDMA) and insert (Wideband Code Division Multiple Access, WCDMA) wireless technology inserts (High-Speed Downlink Packet Access in high-speed downlink packet, HSDPA) standard of further evolution afterwards is a kind of up enhanced scheme that 3GPP proposes.The core concept of HSUPA scheduling is that (User Equipment UE) inserts too high speed, thereby brings interference to system the subscriber equipment of avoiding too much, promptly suppresses uplink interference as far as possible, and Serving cell plays a major role to scheduling simultaneously.Its transfer of data is divided into scheduled transmission and non-scheduled transmission.Wherein, non-scheduled transmission mainly is light at cell load, uses under the little situation of uplink user data amount.This mode helps the business of low data bulk and time delay sensitivity.
The basic implementation procedure of non-scheduled transmission is: system reserves the certain physical resource for UE in advance, and by high-level signaling notice UE; UE no longer sends dispatch request before each transmission, and dedicated channel (the Enhanced Dedicated CHannel that does not need to receive enhancing, E-DCH), E-DCH absolute grant channel (E-DCH Absolute Grant CHannel, E-AGCH) information such as related physical resource that upward sends and power resource allocation, but on reserved resource, directly send uplink strengthening data, and at E-DCH affirmation indicating channel (E-DCH Hybrid ARQ Indicator CHannel, E-HICH) the last feedback message that receives.
The Uplink/Downlink synchronous transmission technology is TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) (Time Division-Synchronous Code Division Multiple Access, TD-SCDMA) one of important key technology in the system, it is the important assurance of the correct demodulation of channel, its application can farthest reduce interference, thereby improves power system capacity.Precisely effectively uplink synchronous control is also extremely important to the HSUPA business equally.
In actual applications, E-DCH physical uplink link channel (E-DCH Physical UPlinkCHannel, E-PUCH) upward during non-scheduled transmission, may there be data to send for a long time, and stipulate in the standard now, E-PUCH does not support discontinuous transmission (Discontinuous Transmission, DTX) mode.So the Synchronization Control in later stage can not be guaranteed.
And the power control in the later data transmission course can not be guaranteed.
Summary of the invention
The embodiment of the invention provides method for synchronous and the system in a kind of non-scheduled transmission, is used for being implemented in the uplink synchronous of non-scheduled transmission.The embodiment of the invention also is used in the power control of transfer of data in the non-scheduled transmission.
A kind of uplink synchronisation method when High Speed Uplink Packet inserts the non-scheduled transmission of employing may further comprise the steps:
After end side does not have the uplink business data transmission, send the message that is used for Synchronization Control to network side;
Network side receives described message, and estimates synchronously according to described message;
Network side carries out Synchronization Control according to synchronous results estimated to end side.
A kind of subscriber equipment that adopts non-scheduled transmission in the High Speed Uplink Packet connecting system comprises:
Control module is used for after no uplink business data need send, and generates the message that is used for Synchronization Control;
Interface module is used for sending described message to network side, and receives the message that is used for synchronous indication that network side sends;
Adjusting module is used for carrying out the corresponding synchronous control operation according to the message that is used for indication synchronously.
A kind of network side apparatus that adopts non-scheduled transmission in the High Speed Uplink Packet connecting system comprises:
Interface module is used for after not receiving uplink business data, the message that is used for Synchronization Control that the receiving terminal side sends;
Processing module is used for estimating synchronously according to described message, and generates the message that is used for synchronous indication according to synchronous results estimated, and the message that will be used for indication synchronously by described interface module sends to end side.
A kind of system that adopts non-scheduled transmission in the High Speed Uplink Packet connecting system comprises:
Subscriber equipment after being used to not have uplink business data and sending, sends the message that is used for Synchronization Control to network side;
Network side apparatus is used for estimating synchronously according to the described message of receiving, and according to synchronous results estimated described subscriber equipment is carried out Synchronization Control.
When the embodiment of the invention does not have business data transmission in non-scheduled transmission, satisfy the requirement of Synchronization Control to the message of network side apparatus transmission by UE.
Description of drawings
Fig. 1 is the structure chart of system in the embodiment of the invention;
Fig. 2 is the structural representation of message in the embodiment of the invention;
Fig. 3 is the primary structure figure of UE in the embodiment of the invention;
Fig. 4 is the detailed structure view of UE in the embodiment of the invention;
Fig. 5 is the structure chart of network side apparatus in the embodiment of the invention;
Fig. 6 is the synchronous main method flow chart of non-scheduled transmission in the embodiment of the invention;
Fig. 7 is the method flow diagram when network side apparatus sends ACK/NACK in the embodiment of the invention;
Method flow diagram when Fig. 8 does not send ACK/NACK for network side apparatus in the embodiment of the invention.
Embodiment
In the HSUPA system, the embodiment of the invention especially when not having the uplink strengthening data transmission, sends message to network side when adopting non-scheduled transmission mode, and network side carries out Synchronization Control according to this message, guarantees the synchronous transmission of later data.
Referring to Fig. 1, the system in the present embodiment comprises UE and network side apparatus.
UE sends message to network side apparatus after being used to not have the uplink business data transmission.UE can send this message in real time, and in order to reduce the Internet resources that take, UE also can send this message again after receiving the return messages of network side, perhaps periodically sends this message.This message can be a null message, does not carry any data.For fear of the wasting of resources, also some information of portability in this message, referring to shown in Figure 2, (Data symbols) carries information at data division, makes network side can better transmit control (comprising power control etc.).Midamble is an intermediate code among Fig. 2, and GP is the protection interval.
Network side apparatus is used for estimating synchronously according to the described message of receiving, and according to synchronous results estimated UE is carried out Synchronization Control.Network side apparatus receive can return at once after this message correctly reply instruction (Positive Acknowledgment, ACK) or the wrong responses instruction (Negative Acknowledgment NACK), also can not do any response.When carrying out Synchronization Control, network side apparatus can send the message return so that (Synchronization Shift SS) sends to UE, comes UE is indicated synchronously with the synch command word by down channel.Wherein, SS comprises three kinds of states: adjust forward, adjust backward and do not adjust, adjustment amount can be joined, such as can be 1/8chip n doubly.If carried some information in the message of receiving, the parse operation that can not be correlated with of network side apparatus then, in order to make transmission control more accurate, network side apparatus also can be resolved information wherein, obtains more the information about channel quality.(Transmission Power Control TPC) sends to UE by down channel power control command word simultaneously.Network side apparatus can specifically be universal mobile telecommunications system (Universal MobileTelecommunication System, UMTS) base station (Node B) and radio resource controller (Radio Network Controller in the system, RNC) combination, also can be Long Term Evolution (Long TimeEvolution, LTE) evolution base station in the system (Evolved Node B, ENB).
Referring to Fig. 3, UE comprises control module 301, interface module 302 and adjusting module 304 in the present embodiment.
Adjusting module 304 is used for carrying out the corresponding synchronous control operation according to the message that is used for indication synchronously.Concrete mode comprises: carry out Synchronization Control according to the SS that receives, can also carry out power control according to the TPC that receives simultaneously.
Referring to Fig. 5, network side apparatus comprises interface module 501 and processing module 502 in the present embodiment.
By above description to system and device, the synchronizing process during to non-scheduled transmission has had basic understanding, below main method for synchronous during to non-scheduled transmission be introduced.
Referring to Fig. 6, the main realization flow of uplink synchronisation method is as follows in the present embodiment:
After step 601:UE does not have uplink business data and need send, send the message that is used for Synchronization Control to network side apparatus.This message also can be used for power control.
Step 602: network side apparatus receives described message, and estimates synchronously according to described message.Wherein mainly be to carry out channel estimating and obtain synchronizing information according to the intermediate code in the message (Midamble).
Step 603: network side apparatus carries out Synchronization Control according to synchronous results estimated to UE.
UE can periodically send upstream message to keep Synchronization Control, and network side apparatus is that example is elaborated with two embodiment obtaining to still have multiple processing mode with UE after the described message below.
Referring to Fig. 7, network side apparatus returns ACK/NACK in the present embodiment, and UE is not when needing to carry out parse operation, and the specific implementation flow process of method for synchronous is as follows:
Step 701:UE picks up counting when no uplink business data need send.This timing operation can be adopted timer, also can adopt the periodicity function among the DTX.
Step 702: when timing reaches the time gate limit value, UE is by enhanced transport format combination (Enhanced Transport Format Combination, E-TFC) carry out transport block set (TransportBlock Set, TBS) select, in order to save Internet resources, so select the TBS of length minimum, minimum TBS is 23 bits (bits) in the present embodiment, expression formula is index=0, and then Chuan Shu data length can not surpass this TBS.
Step 703: in order to satisfy the requirement of minimum TBS, UE selects SI and generates and sends the message that carries SI.
Step 704: network side apparatus carries out channel estimating and obtains synchronizing information according to the intermediate code in the message of receiving, generates corresponding SS.Can also as signal to noise ratio, and generate TPC according to the information that is used for power control of this message acquisition simultaneously about UE.
Network side apparatus also can be ignored to the data division in the message, and skips steps 705 directly carry out step 706.Yet network side apparatus can obtain more information from data division, helps Accurate Analysis and control to channel quality, continues step 705.
Step 705: network side apparatus is resolved the data division in the message, obtains SI.The content ginseng of SI is shown in Table 1.Network side apparatus carries out the control of aspects such as through-put power according to the content among the SI, with further raising channel quality.
Table 1
| SNPL | Serving cell and adjacent sub-district path loss information |
| UPH | The maximum transmission power that UE can use and the ratio of reference value, the dump power that expression UE can use, 5bits; 0-31dB |
| HLBS | Highest priority data accounts for the ratio of total buffer memory |
| TEBS | Total E-DCH buffer status |
| HLID | Highest priority logical channel ID, different I D characterizes different priorities |
Step 706: network side apparatus sends ACK to UE by E-HICH.Because UE does not resolve message in the follow-up flow process, so network side apparatus can send among the ACK/NACK any, can select at random, it is some also can to fix transmission.
Step 707:UE is the message that carries SI owing to what send before, so ACK is not resolved.
UE also can resolve the message of receiving, may receive noise, also may receive ACK, then the information that parses is thrown away.
Step 708: network side apparatus sends return messages to UE, and by SS and TPC wherein UE is reached the indication that power is controlled synchronously.
Step 709:UE receives message that network side apparatus returns and carries out corresponding synchronous and power adjustment operation according to the control information of SS and TPC.Adjustment described in the present embodiment is a kind of expression of broad sense, and SS represents does not adjust corresponding unregulated operation, and not adjusting also is a kind of adjustment.
Wherein, step 705 and 706 is two independently operations, does not have strict execution successively, also can carry out simultaneously.In step 706 and step 708, network side apparatus can carry ACK/NACK, SS and TPC by a message.UE can only resolve SS and TPC, and abandons the parsing to ACK/NACK, also can carry out parse operation simultaneously to the three.
Referring to Fig. 8, network side apparatus does not return ACK/NACK in the present embodiment, and UE be need carry out parse operation the time, and the specific implementation flow process of method for synchronous is as follows:
Step 801:UE adopts the DTX technology, periodically sends special burst when no uplink business data need send.
Step 802: network side apparatus carries out channel estimating and obtains synchronizing information according to the intermediate code in the message of receiving, generates corresponding SS.Simultaneously can also obtain the information that is used for power control, and generate TPC according to this message about UE.
Step 803: network side apparatus is resolved the data division in the message, obtains special burst.
Step 804: network side apparatus sends return messages to UE, and by SS and TPC wherein UE is reached the indication that power is controlled synchronously.
Step 805:UE receives message that network side apparatus returns and carries out corresponding synchronous and power adjustment according to the control information among SS and the TPC.
Step 806:UE carries out parsing about ACK/NACK to the message of receiving, may receive noise, also may receive ACK.Because network side apparatus do not send ACK/NACK, the UE information of can not resolving but still carry out parse operation then.
UE can be to be used for the message of Synchronization Control and power control and the message of receiving not carried out parsing about ACK/NACK according to what send before also.
By the description of the foregoing description, the processing procedure when having known no professional transfer of data in the non-scheduled transmission.In scheduled transmission, also need the transmission of SI, then in scheduled transmission and non-scheduled transmission and when depositing, especially when non-scheduled transmission has the free time, can send SI so that the Internet resources in the scheduled transmission have been saved in the channel quality control of network side apparatus by non-scheduled transmission.Non-scheduled transmission also can be used the certain methods in the scheduled transmission, and SI and uplink business data binding are sent, and promptly all places the data division of message.
When the embodiment of the invention does not have business data transmission in non-scheduled transmission, satisfy the requirement of Synchronization Control to the message of network side apparatus transmission by UE.And the embodiment of the invention takies less resource information as much as possible is provided, and for example sends SI, is convenient to network side and does more precise channels quality control (as power control etc.).The embodiment of the invention also provides the multiple follow-up interactive mode of end side and network side, for practical application provides more example and technology enlightenment.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (17)
1, a kind of uplink synchronisation method when High Speed Uplink Packet inserts the non-scheduled transmission of employing is characterized in that, may further comprise the steps:
After end side does not have the uplink business data transmission, send the message that is used for Synchronization Control to network side;
Network side receives described message, and estimates synchronously according to described message;
Network side carries out Synchronization Control according to synchronous results estimated to end side.
2, uplink synchronisation method as claimed in claim 1 is characterized in that, end side is provided with the time gate limit value; When no uplink business data sends, pick up counting, when reaching described time gate limit value, send the message that is used for Synchronization Control to network side.
3, uplink synchronisation method as claimed in claim 2 is characterized in that, adopts the timer that is provided with to carry out timing; Perhaps, adopt the clocking capability in the discontinuous transmission to carry out timing.
4, as claim 1,2 or 3 described uplink synchronisation methods, it is characterized in that, carry special burst sequence in schedule information or the discontinuous transmission by described message.
5, uplink synchronisation method as claimed in claim 4 is characterized in that, network side is resolved the information of carrying in the described message; Perhaps, network side is not resolved the information of carrying in the described message.
6, as claim 1,2 or 3 described uplink synchronisation methods, it is characterized in that, send to network side be used for the message of Synchronization Control before, end side adopts enhanced transport format combination E-TFC to carry out the selection of transport block set TBS, determines the length of the data block of carrying in the described message.
7, uplink synchronisation method as claimed in claim 6 is characterized in that, E-TFC selects minimum TBS.
8, uplink synchronisation method as claimed in claim 7 is characterized in that, described message carries schedule information.
9, uplink synchronisation method as claimed in claim 1 is characterized in that, network side receives not return after the described message correctly replys instruction ACK or wrong responses command N ACK.
10, uplink synchronisation method as claimed in claim 9 is characterized in that, end side is carried out the parse operation about ACK/NACK according to the described message that sends when receiving the message that network side sends.
11, uplink synchronisation method as claimed in claim 1 is characterized in that, network side receives to return after the described message correctly replys instruction ACK or wrong responses command N ACK.
12, uplink synchronisation method as claimed in claim 11 is characterized in that, end side is not carried out the parse operation about ACK/NACK according to the described message that sends when receiving the message that network side sends.
13, uplink synchronisation method as claimed in claim 1 is characterized in that, network side carries out the corresponding synchronous adjustment by synch command indicating terminal side.
14, uplink synchronisation method as claimed in claim 1 is characterized in that, network side obtains power control information according to described message, and carries out corresponding power adjustment by transmission power control command word indicating terminal side.
15, a kind of subscriber equipment that adopts non-scheduled transmission in the High Speed Uplink Packet connecting system is characterized in that, comprising:
Control module is used for after no uplink business data need send, and generates the message that is used for Synchronization Control;
Interface module is used for sending described message to network side, and receives the message that is used for synchronous indication that network side sends;
Adjusting module is used for carrying out the corresponding synchronous control operation according to the message that is used for indication synchronously.
16, a kind of network side apparatus that adopts non-scheduled transmission in the High Speed Uplink Packet connecting system is characterized in that, comprising:
Interface module is used for after not receiving uplink business data, the message that is used for Synchronization Control that the receiving terminal side sends;
Processing module is used for estimating synchronously according to described message, and generates the message that is used for synchronous indication according to synchronous results estimated, and the message that will be used for indication synchronously by described interface module sends to end side.
17, a kind of system that adopts non-scheduled transmission in the High Speed Uplink Packet connecting system is characterized in that, comprising:
Subscriber equipment after being used to not have uplink business data and sending, sends the message that is used for Synchronization Control to network side;
Network side apparatus is used for estimating synchronously according to the described message of receiving, and according to synchronous results estimated described subscriber equipment is carried out Synchronization Control.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101399578B (en) * | 2007-09-28 | 2011-11-09 | 鼎桥通信技术有限公司 | Uplink power control and synchronization method and system |
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| CN100558019C (en) * | 2002-10-23 | 2009-11-04 | 华为技术有限公司 | A kind of initial uplink method for synchronous of tdd systems |
| WO2007074949A1 (en) * | 2005-12-26 | 2007-07-05 | Kt Corporation | Link synchronization method using received power in rf repeater |
| CN1996792A (en) * | 2006-01-01 | 2007-07-11 | 中兴通讯股份有限公司 | A timing synchronization method of the uplink reference signals |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101399578B (en) * | 2007-09-28 | 2011-11-09 | 鼎桥通信技术有限公司 | Uplink power control and synchronization method and system |
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