CN101478780B - Method for random access in cellular communication system - Google Patents
Method for random access in cellular communication system Download PDFInfo
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- CN101478780B CN101478780B CN2008100028088A CN200810002808A CN101478780B CN 101478780 B CN101478780 B CN 101478780B CN 2008100028088 A CN2008100028088 A CN 2008100028088A CN 200810002808 A CN200810002808 A CN 200810002808A CN 101478780 B CN101478780 B CN 101478780B
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Abstract
The invention discloses a random access method in honeycomb communication system and is used for ensuring uplink synchronization in the process of a terminal starting random access without conflicts when a base station in honeycomb communication system restores the downstream data sending. In the random access process, the random access responding message of the base station responding to the terminal at least comprises time advance and the authorization message sent to the base station from uplink wireless resource; then the terminal receives the random access responding message and sends a confirmation message to the base station through the uplink wireless resource. The invention also provides a clear management strategy to the special random access fronting in the random access process. The invention ensures that the base station can correctly know whether the terminal receives the synchronous message and ensures the smooth operation of sending downstream data; simultaneously, owing that the special random access fronting has a clear management strategy, thus effectively saving resource and avoiding the divergence between the terminal and the special-used fronting.
Description
Technical field
The present invention relates to the access technology in the GSM, relate in particular to the method that inserts at random in a kind of cellular communication system.
Background technology
As shown in Figure 1, cellular radio communication system mainly is made up of terminal, base station and core net.The network that the base station is formed is called wireless access network (Radio Access Network is abbreviated as RAN), is responsible for the Access Layer affairs, such as the management of Radio Resource.Can there be physics or connection in logic according to actual conditions between the base station, such as the base station among Fig. 11 and base station 2 or base station 3.Each base station can connect with one or more than one core net node (Core Network is abbreviated as CN).Core net is responsible for the Non-Access Stratum affairs, such as position renewal etc., and is the anchor point of user plane.The terminal be meant can with the various device of cellular radio communication network communication, such as mobile phone or notebook computer etc.
In existing LTE (long evolving system) system, the terminal and the base station between carry out in the communication process, lose sometimes up synchronously.So-called up be meant synchronously base station and terminal know that all the up-link wireless signal arrives the propagation delay of base station receiver from the terminal.It is a lot of to lose synchronous reason, covers faint zone synchronizing process failure to such an extent as to arrived current area such as the terminal, and perhaps the terminal is in very long discontinuous receiving state of cycle or the like.The base station guarantees through TimingAlignment (time unifying) flow process whether both sides keep uplink synchronous that consistent understanding is arranged for the terminal with the terminal in the LTE system.
When the terminal lost uplink synchronous, if the base station has descending data to need to send, the base station at first need notify the terminal to initiate a random access procedure so, so as to obtain up synchronously, begin the data transmission procedure of recovering descending then.In general this random process is based on special-purpose leading conflict free random access procedure, as shown in Figure 2, comprises following three steps at least:
201: descending signaling is sent in the base station, and the notice terminal begins random access procedure.Comprise the special-purpose preface information of distributing to the terminal in the signaling;
202: random access guiding message is sent at the terminal on RACH;
203: accidental access response message is replied in the base station, comprises Timing Advance in the message at least;
In step 202, the random access guiding that use at the terminal is exactly in step 201, to give the special-purpose leading of terminal by base station assigns.The identity at the terminal of sending this message is discerned in the base station through the random access guiding in the identification step 202.
In step 203, the Timing Advance in the accidental access response message is used for the parameter of initialization terminal uplink synchronous exactly.If the terminal does not obtain up-to-date Timing Advance information, the signal of its transmission can not correctly be received by the base station probably so, thereby causes Communications failure.The terminal wait accidental access response message has the restriction of a time period in addition, and this time period is called the time of reception window.Accidental access response message is only correctly received in the terminal in the time of reception window after, can think that just step 203 accomplishes.
If all steps are all normally carried out, the process of transmitting of downlink data just can be recovered in the base station.But when step 203 generation was unusual, follow-up communication process can be failed.Step 203 is meant that unusually the base station sent accidental access response message; But the medium Access Layer MAC at terminal does not but receive this message; Its reason possibly be that the terminal does not receive that this message or physical layer have been received this message but because signal to noise ratio is too low can't carry out correct handling, such as demodulation failure or CRC check failure etc.
The accidental access response message that send the base station is the control signaling of a MAC layer, and this signaling has adopted the processing procedure that is different from normal HARQ in physical layer, does not promptly confirm/deny the HARQ process of message.In the normal HARQ process, whether the recipient will correctly receive feedback acknowledgment or deny message after receiving wireless signal according to data.In prior art shown in Figure 2, whether this message sends success from the angle of base station, still is that the MAC layer all can't be known from physical layer.So sent out after this accidental access response message when the base station, can think that the uplink synchronous at terminal is successful; But the MAC layer at terminal is not because receive this message, the up desynchronizing state that also is in.Like this when base station when beginning to send descending data, even the terminal can correctly receive packet, but send the affirmation of HARQ/deny that message possibly can't correctly be received by the base station, thereby also can cause the failure of subsequent communications because it receives the back.
The another one problem is the success of this random access procedure can discharge and distribute to this terminal special-purpose random access guiding of (being called for short terminal A) so very naturally if the base station after having sent accidental access response message, is just thought.If the base station has been distributed to other-end to this random access guiding very soon, use such as terminal B.If but terminal A does not receive this accidental access response message; Terminal A adopts this special-purpose random access guiding to initiate again to insert at random possibly again; Because this special-purpose access lead has been distributed to terminal B; So the random access guiding message of two terminal transmissions may produce conflict, for these two terminals, random access procedure in fact no longer has been conflict free process.And for the base station, may be wrong as terminal B terminal A, thus cause the random access procedure of terminal A and terminal B to be failed.
Summary of the invention
Technical problem to be solved by this invention is, the method that inserts at random in a kind of cellular communication system is provided, and realizes with connecing access procedure and guaranteeing the uplink synchronous between the terminal and base station in the random access procedure.
The present invention provides in a kind of cellular communication system the method that inserts at random, and the terminal obtains the process of uplink synchronous when being applied to need to recover downlink data in the base station and sending, and comprises the steps:
After the downlink signaling of special-purpose random access guiding information was carried from the base station reception in the terminal, the beginning random access procedure adopted the leading transmission random access guiding of said special use message to give the base station on RACH;
Said base station comprises the authorization message of Timing Advance and ascending wireless resource at least to the terminal responds accidental access response message in this accidental access response message; Said terminal receiving random access response message also utilizes said ascending wireless resource wherein to send the affirmation signaling to the base station.
Said method further comprises:
Said base station also starts a protection timer Tdp random access procedure is carried out timing when the downlink signaling of special-purpose random access guiding information is carried in the terminal transmission.
Said method further comprises:
Said terminal discharges special-purpose random access guiding send the success of said acknowledge message affirmation uplink synchronous to the base station after.
Said method further comprises:
The random access procedure based on special-purpose random access guiding is abandoned in said terminal after the uplink synchronous failure based on special-purpose random access guiding, discharge special-purpose random access guiding.Said uplink synchronous failure is meant: said terminal does not receive that the repeating transmission number of times of correct accidental access response message and special-purpose random access guiding reaches the predefined maximum number of times that allows.
Said method further comprises:
The special-purpose random access guiding of distributing to said terminal is reclaimed in said base station behind the up affirmation signaling of receiving the terminal or predefined protection timer expiry.
Said ascending wireless resource comprises that the base station licenses to the up time domain and/or the frequency domain Radio Resource at terminal.
The control signaling that said affirmation signaling is the media access control MAC layer.The mode that said affirmation signaling employing mixed automatic retransmission is HARQ is sent.
The present invention also provides the method that inserts at random in a kind of cellular communication system, in the time of need recovering the downlink data transmission in the base station, comprises the steps:
To the special-purpose random access guiding of terminal distribution, said terminal initiates to insert at random request based on said special-purpose random access guiding to said base station through downlink signaling in the base station;
The authorization message of Timing Advance and ascending wireless resource is carried at least to the accidental access response message of terminal responds in the base station in this response message; Said terminal utilizes said ascending wireless resource to send up affirmation signaling to the base station after successfully receiving said Timing Advance;
Said terminal discharges special-purpose random access guiding after sending said up affirmation signaling;
The special-purpose random access guiding of distributing to said terminal is reclaimed in said base station behind the up affirmation signaling of receiving the terminal or said protection timer expiry, the random access guiding that this is special-purpose is redistributed.Said recovery is meant that said special-purpose random access guiding becomes the resource of sub-distribution again.
Said method further comprises:
Said terminal is after the uplink synchronous failure based on special-purpose random access guiding; Be after said terminal does not receive that the repeating transmission number of times of correct accidental access response message and special-purpose random access guiding reaches predefined maximum permission number of times; Abandon random access procedure, discharge special-purpose random access guiding based on special-purpose random access guiding.
Utilize accidental access method of the present invention, lose if the base station sends to the accidental access response message at terminal, the terminal can be because do not receive accidental access response message so, and think own uplink synchronous failure, thereby stop to send confirmation of synchronization message; And the base station also can be because of not receiving said confirmation of synchronization message, and think that the terminal does not also obtain uplink synchronous.The terminal will be consistent for the judgement of uplink synchronous with the base station like this, avoided follow-up Communications failure.
Further, if the confirmation of synchronization information drop-out that send at the terminal, the terminal can be thought and obtained uplink synchronous so, but the base station can not think that because of receiving this acknowledge message the terminal does not also obtain uplink synchronous.But in the recovery process because of downlink data; Follow-up data transmission procedure can not continued in the base station, and for the terminal, because can not further obtain the mandate of ascending resource from the base station; If send any message and data, then also need initiate random access procedure again.
The present invention is directed in the prior art special-purpose random access guiding in the random access procedure in addition and do not have the problem of respective resources management strategy; Also the management strategy to special-purpose random access guiding in the random access procedure is carried out clear and definite definition; Can prevent difference to occur between terminal and the base station; Simultaneously can make full use of resource, avoid leading being taken in vain and cause the wasting of resources.
Description of drawings
Fig. 1 is the structural representation of existing cellular radio communication system;
Fig. 2 is based on the leading conflict free random access procedure sketch map of special use in the prior art;
Fig. 3 is the nothing conflict random access procedure sketch map based on special-purpose random access guiding that the present invention has improved;
Fig. 4 is based on the nothing of special-purpose random access guiding conflict random access procedure sketch map in the embodiment of the invention 1;
Fig. 5 is based on the nothing of special-purpose random access guiding conflict random access procedure sketch map in the embodiment of the invention 2;
Fig. 6 is based on the nothing of special-purpose random access guiding conflict random access procedure sketch map in the embodiment of the invention 3.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, the present invention is done to specify further below in conjunction with accompanying drawing.
Accidental access method of the present invention mainly is when the downlink data transmission need be recovered in the base station in cellular communication system, guarantees a kind of accidental access method of uplink synchronous in the random access procedure that requires the terminal to initiate not have to conflict.In prior art; Can't guarantee that the base station can learn accurately whether the terminal correctly receives the problem of synchronizing information; Whether correctly having proposed a kind of is the terminal distribution ascending resource by the base station, and utilized the uplink authorization resource of base station assigns to report confirmation of synchronization message, informed the base station accidental access method of receiving synchronous information by the terminal.
To above-mentioned technical problem of the prior art, the present invention has improved the nothing conflict random access procedure based on special-purpose random access guiding, and is as shown in Figure 3, comprises the steps:
301: descending signaling is sent in the base station, and the notice terminal begins random access procedure, comprises the special-purpose random access guiding information of distributing to the terminal in the said downlink signaling; Said special-purpose random access guiding information comprises leading call number;
302: the terminal is adopted the special-purpose random access guiding that distributes to send random access guiding message on RACH and is given the base station;
303: the base station comprises the authorization message of Timing Advance and ascending wireless resource at least to the terminal responds accidental access response message in this accidental access response message; Wherein, said ascending wireless resource comprises up time domain and/or frequency domain Radio Resource;
304: send on the ascending wireless resource that the terminal is distributed in the base station and confirm signaling, acknowledged receipt of Timing Advance information.Said affirmation signaling in this step can be the confirmation of synchronization signaling, also or other can inform that base station terminal has successfully received the signaling of Timing Advance.
Wherein, said downlink signaling can be the random access guiding assignment messages, is used to send the downlink data of arrival; Said downlink signaling is a switching command, is used for the requirement terminal and switches to Target cell from the cell-of-origin; If said downlink signaling is a switching command, then said confirmation of synchronization signaling then should be handoff completion message mutually.
Compared with prior art; The present invention is in the step 303 of the random access procedure that conflicts based on the nothing of special-purpose random access guiding; Increased the configuration of ascending wireless resource; So that the confirmation of synchronization message of terminal said ascending wireless resource forwarding step 304 capable of using has been received Timing Advance information to affirmation terminal, base station, just the terminal has obtained uplink synchronous.
Further, in conjunction with above-mentioned access process at random shown in Figure 3, the present invention also provides the tactful mode that is used to manage special-purpose random access guiding, that is:
At first, the base station distributes the random access guiding of 1 special use to give the terminal in the downlink signaling of step 301; The back said special-purpose random access guiding of release is in time being inserted successfully or failed in said then terminal or base station at random.Particularly:
(1) terminal will discharge special-purpose random access guiding under following condition:
After the network side at place, base station has confirmed that uplink synchronous is perhaps failed based on the uplink synchronous of special-purpose random access guiding later on, abandon random access procedure based on special-purpose random access guiding, discharge special-purpose random access guiding;
For the terminal, " uplink synchronous failure " typically refers to the terminal and do not receive that the repeating transmission number of times of correct accidental access response message and special-purpose random access guiding arrives the predefined maximum number of times that allows.
(2) the special-purpose random access guiding that distributes will be reclaimed in the base station under following condition:
After receiving the uplink synchronous acknowledge message or predefined protection timer expiry at terminal, reclaim the special-purpose random access guiding of distributing to this terminal.
For the base station, the meaning of " recovery " is meant that the base station can redistribute by the random access guiding that this is special-purpose again, and random access guiding that for example should special use is distributed to other terminal and used.
Utilize the method that inserts at random of the present invention, if the accidental access response message of above-mentioned steps 303 is lost, the terminal can be because do not receive accidental access response message so, and think own uplink synchronous failure, thereby stop the affirmation message of forwarding step 304; And the base station also can be because of the affirmation message of not receiving step 304, and think that the terminal does not also obtain uplink synchronous.The terminal will be consistent for the judgement of uplink synchronous with the base station like this, avoids follow-up Communications failure.
Further, if the confirmation of synchronization information drop-out that send in step 304 at the terminal, the terminal can be thought and obtained uplink synchronous so, but the base station can not think that because of receiving this acknowledge message the terminal does not also obtain uplink synchronous.But this relation is little, because the recovery process of this downlink data, follow-up data transmission procedure can not continued equally in the base station.And,,, then also need initiate random access procedure again if send any message and data because there is not the mandate of further ascending resource for the terminal.The present invention manages for special-purpose random access guiding and carries out clear and definite definition in addition, can prevent difference to occur between terminal and the base station.
Next provided to several kinds of concrete conditions in the downlink data recovery process and provided 3 specific embodiments using uplink synchronisation method of the present invention.
Embodiment 1: successful downlink data recovery process.
If certain terminal is in the connection status of RRC_CONNECTED because certain reason lost up synchronously.At this moment, descending data need be sent in the base station, then initiated one based on the leading conflict free random access procedure of special use, as shown in Figure 4:
401: descending signaling is sent in the base station, and the notice terminal begins random access procedure, comprises the special-purpose preface information of distributing to the terminal in the signaling, such as a leading call number n; The base station also can be provided with a protection timer Tdp simultaneously;
402: random access guiding message is sent at the terminal on RACH, employing be the access lead that distributes in the step 401.
403: the base station comprises the authorization message of Timing Advance TA and ascending wireless resource to the terminal responds accidental access response message in this accidental access response message;
404: accidental access response has been received at the time of reception window in the terminal, on the ascending wireless resource that distributes, sends the control signaling of a media access control MAC layer then, has acknowledged receipt of Timing Advance TA.The terminal can discharge special-purpose random access guiding simultaneously.
405: the base station is received and is reclaimed special-purpose random access guiding, and stop Tdp after the affirmation signaling of sending at the terminal.
Embodiment 2: the downlink data recovery process of failure: lose accidental access response message.
If certain terminal is in the connection status of RRC_CONNECTED because certain reason lost up synchronously.At this moment, descending data need be sent in the base station, then initiated one based on the leading conflict free random access procedure of special use, as shown in Figure 5:
501: descending signaling is sent in the base station, and the notice terminal begins random access procedure, comprises the special-purpose preface information of distributing to the terminal in the signaling, such as a leading call number n; The base station is provided with a protection timer Tdp simultaneously;
502: random access guiding message is sent at the terminal on RACH, employing be the access lead that distributes in the step 501;
503: the base station has comprised the authorization message of Timing Advance TA and ascending wireless resource to the terminal responds accidental access response message in this accidental access response message;
504: said accidental access response message is not received at the time of reception window in the terminal, and then the terminal is decided and retransmitted random access guiding message or stop random access procedure according to the situation of the random access procedure of the configuration of network and record; If stop, discharging special-purpose random access guiding so simultaneously;
505: downlink data is not temporarily sent because do not receive the affirmation signaling at terminal in the base station; After Tdp is overtime, reclaim special-purpose random access guiding.
Embodiment 3: the downlink data recovery process of failure: the confirmation of synchronization message of losing the terminal.
If certain terminal is in the connection status of RRC_CONNECTED because certain reason lost up synchronously.At this moment, descending data need be sent in the base station, then initiated one based on the leading conflict free random access procedure of special use, as shown in Figure 6:
601: descending signaling is sent in the base station, and the notice terminal begins random access procedure, comprises the special-purpose preface information of distributing to the terminal in the signaling, such as a leading call number n; The base station is provided with a protection timer Tdp simultaneously;
602: random access guiding message is sent at the terminal on RACH, employing be the access lead that distributes in the step 601;
603: the base station has comprised the authorization message of Timing Advance TA and ascending wireless resource to the terminal responds accidental access response message in this accidental access response message;
604: said accidental access response message has been received at the time of reception window in the terminal, on the ascending wireless resource that distributes, sends the control signaling of a media access control MAC layer then, has acknowledged receipt of Timing Advance TA; The terminal discharges special-purpose random access guiding;
605: the MAC layer of base station is not received the affirmation message at terminal, after timer Tdp is overtime, reclaims random access guiding.
The preferred embodiments of the present invention that are merely described herein are not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Therefore, all any modifications of within spirit of the present invention and principle, being done, be equal to replacement, improve and upgrade or the like, all should be included within protection scope of the present invention.
Claims (10)
1. the method that inserts at random in the cellular communication system, the terminal obtains the process of uplink synchronous when being applied to need to recover downlink data in the base station and sending, and it is characterized in that, comprises the steps:
After the downlink signaling of special-purpose random access guiding information was carried from the base station reception in the terminal, the beginning random access procedure adopted said special-purpose random access guiding to send random access guiding message on RACH and gives the base station;
Said base station comprises the authorization message of Timing Advance and ascending wireless resource at least to the terminal responds accidental access response message in this accidental access response message; Said terminal receiving random access response message also utilizes said ascending wireless resource wherein to send the affirmation signaling to the base station;
Wherein, the random access procedure based on special-purpose random access guiding is abandoned in said terminal after the uplink synchronous failure based on special-purpose random access guiding, discharge special-purpose random access guiding;
The special-purpose random access guiding of distributing to said terminal is reclaimed in said base station behind the up affirmation signaling of receiving the terminal or predefined protection timer expiry.
2. the method for claim 1 is characterized in that, said method further comprises:
Said base station also starts a protection timer Tdp random access procedure is carried out timing when the downlink signaling of special-purpose random access guiding information is carried in the terminal transmission.
3. the method for claim 1 is characterized in that, said method further comprises:
Said terminal discharges special-purpose random access guiding send the success of said affirmation signaling affirmation uplink synchronous to the base station after.
4. method as claimed in claim 3 is characterized in that, said uplink synchronous failure is meant:
Said terminal does not receive that the repeating transmission number of times of correct accidental access response message and special-purpose random access guiding reaches the predefined maximum number of times that allows.
5. the method for claim 1 is characterized in that, said ascending wireless resource comprises that the base station licenses to the up time domain and/or the frequency domain Radio Resource at terminal.
6. the method for claim 1 is characterized in that, the control signaling that said affirmation signaling is the media access control MAC layer.
7. the method for claim 1 is characterized in that, the mode that said affirmation signaling employing mixed automatic retransmission is HARQ is sent.
8. the method that inserts at random in the cellular communication system is characterized in that, in the time of need recovering downlink data in the base station and send, comprises the steps:
To the special-purpose random access guiding of terminal distribution, said terminal initiates to insert at random request based on said special-purpose random access guiding to said base station through downlink signaling in the base station;
The authorization message of Timing Advance and ascending wireless resource is carried at least to the terminal responds accidental access response message in the base station in this response message; Said terminal utilizes said ascending wireless resource to send up affirmation signaling to the base station after successfully receiving said Timing Advance;
Said terminal discharges special-purpose random access guiding after the said up affirmation signaling of transmission is perhaps being confirmed the uplink synchronous failure later on;
The special-purpose random access guiding of distributing to said terminal is reclaimed in the up affirmation signaling of receiving the terminal or after protecting timer expiry in said base station.
9. method as claimed in claim 8 is characterized in that,
Said recovery is meant that said special-purpose random access guiding becomes the resource of sub-distribution again.
10. method as claimed in claim 8 is characterized in that,
The failure of said uplink synchronous is meant that said terminal do not receive that the repeating transmission number of times of correct accidental access response message and special-purpose random access guiding reaches the predefined maximum number of times that allows.
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Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101772180A (en) * | 2008-12-31 | 2010-07-07 | 中兴通讯股份有限公司 | Random access method and system |
| CN101753202A (en) * | 2010-01-07 | 2010-06-23 | 中兴通讯股份有限公司 | Up synchronous method and terminal. |
| CN102404864A (en) * | 2010-09-16 | 2012-04-04 | 中兴通讯股份有限公司 | Method for avoiding random access conflict and mobile terminal for avoiding random access conflict |
| CN102647757A (en) * | 2011-02-17 | 2012-08-22 | 中兴通讯股份有限公司 | Sending method for TA (Time Advance) regulating command of LTE (Long Term Evolution) and base station |
| CN102136897B (en) * | 2011-03-04 | 2015-12-16 | 深圳市中兴微电子技术有限公司 | Adopt the method and system of HARQ mode transmitting time advance command |
| CN103517353A (en) * | 2012-06-20 | 2014-01-15 | 中兴通讯股份有限公司 | Method for processing data transmission and terminal |
| CN103546978A (en) * | 2012-07-10 | 2014-01-29 | 普天信息技术研究院有限公司 | Method for recycling noncompetitive random access resources on network side |
| JP6579624B2 (en) * | 2014-05-23 | 2019-09-25 | ▲ホア▼▲ウェイ▼技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Method for transmitting information, base station, and user equipment |
| CN105532068A (en) | 2014-07-01 | 2016-04-27 | 华为技术有限公司 | Random access method and apparatus |
| TWI679869B (en) * | 2016-11-01 | 2019-12-11 | 華碩電腦股份有限公司 | Method and apparatus for identifying uplink timing advacne in a wireless communication system |
| CN108462989A (en) * | 2017-02-21 | 2018-08-28 | 中兴通讯股份有限公司 | The treating method and apparatus of Timing Advance |
| BR112019019932A2 (en) * | 2017-03-24 | 2020-04-22 | Mediatek Inc | apparatus and methods for beam identification through the physical random access channel (prach) and efficient use of prach resources |
| CN108964810A (en) * | 2017-05-19 | 2018-12-07 | 中兴通讯股份有限公司 | A kind of DCI0 judgment method, device and computer readable storage medium |
| CN110351873B (en) | 2018-04-04 | 2022-06-14 | 华为技术有限公司 | Method and device for reducing time delay |
| CN112118634B (en) * | 2019-06-20 | 2023-03-28 | 中国电信股份有限公司 | Communication method, device, system, base station and terminal |
| CN113163506B (en) * | 2021-03-09 | 2022-04-22 | 中国电子科技集团公司第五十四研究所 | Random access method based on cyclic offset real Chirp signal |
| CN113939000A (en) * | 2021-12-01 | 2022-01-14 | 江苏亨鑫众联通信技术有限公司 | Method, system and storage medium for reducing consumption of base station resources by connected terminal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1466285A (en) * | 2002-06-06 | 2004-01-07 | 华为技术有限公司 | Method for ralizing synchronization in TDD radio communication system |
| CN1527622A (en) * | 2003-03-07 | 2004-09-08 | �ʼҷ����ֵ��ӹɷ�����˾ | Method and apparatus for up-link hold-in of point-to-point coordinate communication in radio communication network |
-
2008
- 2008-01-04 CN CN2008100028088A patent/CN101478780B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1466285A (en) * | 2002-06-06 | 2004-01-07 | 华为技术有限公司 | Method for ralizing synchronization in TDD radio communication system |
| CN1527622A (en) * | 2003-03-07 | 2004-09-08 | �ʼҷ����ֵ��ӹɷ�����˾ | Method and apparatus for up-link hold-in of point-to-point coordinate communication in radio communication network |
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