CN101128062B - Method for terminal random access to cellular wireless communication system and group identifier generation method - Google Patents
Method for terminal random access to cellular wireless communication system and group identifier generation method Download PDFInfo
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Abstract
The utility model relates to a method for terminal random access of cellular wireless communication system and a method for generating group identifier, comprising the following steps: a terminal sends a piece of random access information to a base station in a random access time slot of the radio frame; the base station takes the position information of the random access time slot in the radio frame as the group identifier which is added up into a random access signal message together with an exceptional identifier, and sends the message to the terminal; the terminal determines if the received group identifier and the exceptional identifier in the random access signal message are the expected value or not, if yes, the terminal sends the message or the data to the base station in an upstream wireless resource. The utility model has the advantages that determination of the group identifier of the random access message is not dependent on the reading of the SFN after the utility model is adopted, which is especially important to perform a random access in a switching processing, additionally, whatever the random access time slot changes, the same method of setting the group identifier is able to be applied simply.
Description
Technical field
The present invention relates to a kind of cellular radio communication system, relate in particular to method and group identification generation method that cellular radio communication system is inserted at a kind of terminal at random.
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, and (Radio Access Network 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, like the base station among Fig. 11 and base station 2 or base station 3.Each base station can (Core Network CN) connects with one or more than one core net node.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.
Cellular radio communication system is that base unit identifies with the radio frames on system time, and the numbering of these radio frames is called SFN (radio frame number).The terminal can obtain the border of radio frames through the mode of Cell searching, thereby on descending, obtains time synchronized.In the such cellular radio communication system of UMTS (UMTS) and LTE (long evolving system), the length of radio frames is 10ms (millisecond).Different cellular radio communication systems, the frame structure of radio frames may be different, and a common radio frames can comprise the integer sub-frame.When the terminal obtains down-going synchronous, just can know the position of current time subframe in the current wireless frame.As shown in Figure 2, in the LTE system, comprise 10 sub-frame in the radio frames of a TYPE1 (Class1), each subframe comprises 2 time slots, this frame structure is applicable to FDD (FDD) and HCR TDD (high bit rate time division duplex); As shown in Figure 3, comprise 2 sub-frame in the radio frames of a TYPE2 (type 2), each subframe comprises the interval time slot between 7 time slots and two time slots, this frame structure is applicable to LCR TDD (low bit rate rate time division duplex).The cellular radio communication system that also has is called time slot with the unit of littler one-level in the radio frames, such as in a radio frames 15 time slots being arranged in the FDD system of WCDMA (WCDMA).Random access time slot among this paper is meant in the cellular radio communication system time slot in the subframe of littler one-level in the radio frames or time slot or the subframe.For the radio frames of Class1 in the LTE system, random access time slot typically refers to the subframe that length is 1ms; For the radio frames of type 2 in the LTE system, random access time slot typically refers to the time slot in the subframe that length is 5ms.But exception is also arranged, and in order to reach the purpose of extensive covering, random access time slot may occupy 2 or 3 sub-frame or time slot in the LTE system, and these random access guidings are called as the expansion pulse sometimes; And in LCR TDD, also can adopt a kind of short random access guiding in the very little sub-district, length is shorter than general time slot.
In the existing LTE, the process that cellular radio communication system is inserted at the terminal at random comprises following three steps:
A, random access guiding message is sent to the base station in the terminal on certain random access time slot of radio frames;
B, the base station comprises ascending wireless resource at least to the terminal responds accidental access response message in the message;
C, the terminal is sent message in the base station on the ascending wireless resource of its distribution.
Among the step a, send random access guiding message to the base station having 1 or terminal more than 1 on the identical random access time slot.These random access guiding message might be different, also maybe be identical, promptly adopted identical random access guiding pseudo noise code.The random access guiding message that has adopted different pseudo noise codes can be identified in the base station on identical random access time slot, but can't identify the random access guiding message that has adopted identical pseudo noise code.
Among the step b, may comprise response message in the accidental access response message to 1 or random access guiding message more than 1.These random access guiding message are to send over from identical random access time slot.Being incorporated in a way in the response message more than 1 accidental access response information mainly is in order to improve the utilance of random access procedure on Radio Resource.In order to let terminal recognition go out this accidental access response message, interim group identification can be added in the base station in this message, have corresponding relation between this group identification and the random access time slot.Also comprise a private label corresponding simultaneously in the accidental access response message, be generally the call number in the random access guiding set of random access guiding in the sub-district, place with random access guiding message itself.The method to set up of group identification is stipulated in agreement in advance.Its desired value with group identification and private label in the accidental access response message that receives has just been known in certain terminal when sending random access guiding message to the base station.
In order to keep the accidental access response process to have certain flexibility, the accidental access response message random access guiding message synchronization of on time domain, getting along well, promptly there is not fixing relation in both on time domain; On the contrary, allow accidental access response message in a time window, to send.Simultaneously in order to increase the flexibility of wireless resource scheduling; Be the random access guiding message that response receives in certain random access time slot, the base station can be in above-mentioned time window 1 or a plurality of TTI (Transmission Time Interval) go up to send with above-mentioned random access guiding message corresponding random and insert response message.The time started of this time window is relevant with the speed of base station processes random access guiding message, and the load of concluding time and base station processes random access guiding message and scheduling give the factors such as Radio Resource of accidental access response message relevant.
Among the step c, when the terminal received 1 accidental access response message in the official hour window after, it at first verified the group identification that whether has comprised expectation in this message, and this group identification is included on the physical control channel usually; If comprised the group identification of expectation in this message, whether checking wherein also comprises the private label corresponding with the random access guiding message of being sent again; If comprised the private label of expectation, just can confirm that current accidental access response message is corresponding with the random access guiding message of sending.Afterwards, message is sent on the ascending wireless resource of its distribution in the base station according to the needs of reality in the terminal in step b.The message of sending possibly be that request, handoff response, dispatch request or uplink synchronization request or the like are set up in 3 layers wireless connections.
In the existing disclosed technology, proposed in step b, to be provided with the method for group identification.General these methods can require to calculate the absolute position of random access time slot on system time, and then calculate a group identification according to this absolute position, make this group identification unique in the official hour scope.The defective of these methods is that at first the terminal need obtain the absolute system time that random access time slot belongs to honeycomb, generally is meant SFN.But in practical application; In handoff procedure, possibly can't know the SFN of target cell in advance such as the terminal; This just can't calculated group identify; And for the SFN that obtains target cell often needs extra delay and system handles, such as read system message, because SFN normally broadcasts in system message.The another one defective is, in the wireless telecommunication system of reality, the configuration of RACH is flexible and changeable, thus be difficult to one of regulation fixing make the time range that group identification is unique.If through notifying this time range such as the mode of system message broadcasting; Perhaps can increase the flexibility of system configuration; But mean that also the terminal is at every turn when initiating to insert request at random; All need read this parameter, and the cycle of system message broadcasting is often long, therefore can increase the time that honeycomb is inserted at the terminal.
Summary of the invention
The technical problem that the present invention will solve provides method and the group identification generation method that cellular radio communication system is inserted at a kind of terminal at random, so that the terminal fast, be linked in the cellular radio communication system accurately.
The technical scheme that the present invention adopts is:
The invention provides a kind of terminal and insert the method for cellular radio communication system at random, may further comprise the steps:
The random access time slot of terminal in radio frames sends random access guiding message to the base station;
To accidental access response message as group identification, is added the positional information of random access time slot in radio frames together with private label in the base station, and this message is sent to the terminal;
Whether group identification in its accidental access response message of receiving of terminal judges and private label are desired value, if message or data are sent to the base station in the terminal on ascending wireless resource.
Further, ascending wireless resource is contained in the accidental access response message that the base station is a terminal distribution.
Further, before carrying out above-mentioned steps, the known available random access time slot in terminal, and will with random access time slot at the place positional information in the radio frames as the expectation group identification.
Further, private label is the identification number of random access guiding.
Further, when the positional information of random access time slot in radio frames was relative position, relative position was random access time slot relative sequence number in 1 or a plurality of random access time slots in radio frames.
Further, when the positional information of random access time slot in radio frames was the absolute position, the absolute position was the numbering of random access time slot in radio frames.
Further; When the time of reception length of window of accidental access response message be not more than subframe in the radio frames or number of time slots by 2 power power divide exactly as a result the time, the absolute position of random access time slot in radio frames is the numbering of random access time slot in radio frames and the mould of dividing exactly the result.
The present invention also provides a kind of generation method of group identification, is applied to the terminal and inserts at random in the process of cellular radio communication system, may further comprise the steps:
The base station is receiving the terminal after the random access guiding message of its transmission, judges the positional information of random access time slot in its place radio frames at random access guiding message place;
With this positional information as group identification.
Further, when the positional information of random access time slot in radio frames was relative position, relative position was random access time slot relative sequence number in 1 or a plurality of random access time slots in radio frames.
Further, when the positional information of random access time slot in radio frames was the absolute position, the absolute position was the numbering of random access time slot in radio frames.
Further; When the time of reception length of window of accidental access response message be not more than subframe in the radio frames or number of time slots by 2 power power divide exactly as a result the time, the absolute position of random access time slot in radio frames is the numbering of random access time slot in radio frames and the mould of dividing exactly the result.
Adopt after the present invention, can not rely on reading of SFN during group identification in confirming accidental access response message, this is even more important for the random access procedure that in handoff procedure, carries out.In addition, no matter how the configuration of random access time slot changes, and can adopt identical method that group representation is provided with, simple.
Description of drawings
Fig. 1 is the structure chart of cellular radio communication system in the prior art;
Fig. 2 is the wireless frame structure of LTE Class1 in the prior art;
Fig. 3 is the wireless frame structure of LTE type 2 in the prior art;
Fig. 4 inserts the flow chart of cellular radio communication system at random for terminal in the embodiment of the invention;
Fig. 5 be in the prior art HCR TDD at the method for salary distribution sketch map of uplink and downlink timeslot.
Embodiment
To combine accompanying drawing and embodiment that technical scheme of the present invention is explained in more detail below.
As shown in Figure 4, the process that cellular radio communication system is inserted at the terminal at random comprises following step:
Random access guiding message is sent to the base station in a, terminal on certain random access time slot of radio frames;
Accidental access response message is replied in b, base station, has comprised in the message being the ascending wireless resource of above-mentioned terminal distribution and the corresponding private label of random access guiding message; On physical control channel, comprised group identification RA-RNTI (random access radio network temporary mark), this RA-RNTI is mapped to the positional information of random access time slot in its place radio frames at the random access guiding message place of receiving the base station;
After accidental access response message is received at c, terminal, confirm through the RA-RNTI and the private label that comprise in the accidental access response message that is relatively local and that receive whether these two signs are desired value.If two signs are desired values, just show that the terminal received the accidental access response message of expectation, then the terminal be the message or the data of transmissions needs transmission on the ascending wireless resource of its distribution in step b in the base station.
Before step a, before promptly initiating to insert at random at the terminal, it is known inserting Radio Resource (being 1 possible or a plurality of random access time slots) and the RA-RNTI corresponding with random access time slot at random.Wherein 1 RA-RNTI is mapped to the positional information of 1 random access time slot in its place radio frames.
Among the step b, the generation method of group identification is specially:
(1) base station is receiving the terminal after the random access guiding message of its transmission, judges the positional information of random access time slot in its place radio frames at random access guiding message place;
(2) numbering of this positional information is added in the accidental access response message as group identification.
The positional information of random access time slot in its place radio frames can be relative position, also can be the absolute position.Relative position can be the relative sequence number in random access time slot one or more random access time slots in its place radio frames, and the absolute position can be the numbering of random access time slot in its place radio frames.Such as 10 sub-frame are arranged in certain radio frames, and disposed 3 random access time slots, supposed that the numbering of their place subframes is respectively 0,3,6.If sequence number is with 0 beginning, the relative position of these 3 random access time slots is respectively 0,1,2 so, and the absolute position is respectively 0,3,6.
If the maximum length of the time window of receiving random access response message (being called for short Wm) less than the length of radio frames, also can represent with additive method so by the absolute position.Suppose that N representes subframe or number of time slots in the radio frames, 2 n power representes that with 2^n n is a natural number, promptly 0,1, and 2....Suppose that the n value that can divide exactly N is n
*, get M=N/ (2^n so
*).If M is greater than or equal to Wm, the absolute position also can be expressed as so: subframe numbering %M (% is the modulo operation symbol).Such as the fdd mode N=10 of LTE, M can be 10 or 5 (to be n
*=0 or 1).If Wm is less than or equal to 5 value, such as 4, the absolute position is exactly subframe numbering %5 so; If but Wm is greater than 5 smaller or equal to 10, such as 6, the absolute position is exactly subframe numbering %10 so.For LTE TYPE1 TDD, M possibly get 5 or 10; For LTE TYPE2, M can be 14 or 7 (suppose uplink synchronous time slot use the numbering of front descending time slot).Adopt said method can reduce the information bit of RA-RNTI.
The benefit that adopts the relative position representation is that the used information bit of expression group identification is fewer; In above-mentioned example; Represent group identification as long as 2 bits are still represented just 4 bits of needs (supposing that all subframes or time slot all possibly become random access time slot) with the absolute position with relative position.But adopt the relative position representation also might lead to errors.On 5 work song frames, increased by 1 random access time slot such as system.If the terminal is not before also upgrading being configured to of this random access time slot; On 6 work song frames, send a random access guiding message, the terminal can think that group identification is 2 so, but base station side is in response; Can be set to 3 by group identification, random access procedure will be failed like this.And adopting the situation of absolute position representation just in time opposite, it can deal with the exception error that possibly occur.Such as being example with above-mentioned situation still, the terminal can think that group identification is 6 after having sent random access guiding message on the 6 work song frames, and the base station also can be set to 6 by group identification in response, thereby makes the random access procedure success.
In LTE, no matter adopt the configuration mode of which kind of frame structure and random access time slot, its random access procedure all comprises above-mentioned 3 steps.For implementation method of the present invention is described, be given in below under different radio frame structure and the random access time slot configuring condition, 1 interior RA-RNTI of radio frames is mapped to the method for the position of each random access time slot in its place radio frames.To the situation of expansion pulse, the absolute position is to be as the criterion with expansion first subframe that occupies of pulse or the numbering of time slot.Listed respectively among the embodiment and adopted relative position representation and two kinds of later RA-RNTI of method of absolute position representation.
Embodiment 01: the Class1 frame structure, be applied among the FDD, and the random access time slot cycle is 10ms or more than the 10ms, such as 20ms.
Relative position: RA-RNTI=0
The absolute position: the subframe numbers at RA-RNTI=random access time slot place, such as 0,5 or 9;
Embodiment 02: the Class1 frame structure, be applied among the FDD, and the random access time slot cycle is 5ms.
Relative position: RA-RNTI=0,1
The absolute position: the subframe numbers at RA-RNTI=random access time slot place, such as (0,5) perhaps (1,6) perhaps (2,7) perhaps (3,8) perhaps (4,9)
Embodiment 03: the Class1 frame structure, be applied in FDD, and the random access time slot cycle is 1ms.
Relative position: RA-RNTI=0,1,2,3,4,5,6,7,8,9
Absolute position: RA-RNTI=0,1,2,3,4,5,6,7,8,9
Embodiment 04: the Class1 frame structure, be applied in FDD, and the random access time slot cycle is 10ms or more than the 10ms, such as 20ms, the expansion pulse takies 2 sub-frame.
Relative position: RA-RNTI=0
The absolute position: the subframe numbers at RA-RNTI=random access time slot place, such as 0,5,8 etc.
Embodiment 06: the Class1 frame structure, be applied in FDD, and the random access time slot cycle is 10ms or more than the 10ms, such as 20ms, the expansion pulse takies 3 sub-frame
Relative position: RA-RNTI=0
The absolute position: the subframe numbers at RA-RNTI=random access time slot place, such as 0,3,6 etc.
The uplink and downlink timeslot method of salary distribution of HCR TDD is as shown in Figure 5 among the LTE.
Embodiment 11: the Class1 frame structure, be applied in HCR TDD, and the random access time slot cycle is 10ms or more than the 10ms, such as 20ms
Relative position: RA-RNTI=0
Absolute position: the subframe numbers at RA-RNTI=random access time slot place, 1 or 4 or 9 etc.
Embodiment 12: the Class1 frame structure, be applied in HCR TDD, and the random access time slot cycle is 5ms
Relative position: RA-RNTI=0,1
The absolute position: the subframe numbers at RA-RNTI=random access time slot place, (1,6) be (2,7) perhaps (3,8) perhaps (4,9) perhaps
Embodiment 14: the Class1 frame structure, be applied among the HCR TDD, and the random access time slot cycle is 10ms or 20ms, the expansion pulse occupies 3 time slots
Relative position: RA-RNTI=0
Absolute position: the subframe numbers at RA-RNTI=random access time slot place, 1,2,6 or 7 etc.
Embodiment 15: the Class1 frame structure, be applied among the HCR TDD, and the random access time slot cycle is 10ms or more than the 10ms, such as 20ms, the expansion pulse occupies 2 time slots
Relative position: RA-RNTI=0
The absolute position: the subframe numbers at RA-RNTI=random access time slot place, as 1,3 or 8 etc.
Among the LTE uplink and downlink timeslot of LCR TDD be assigned certain requirement: in each field, No. 0 time slot is a descending time slot; Since No. 1 time slot is continuous ascending time slot; If up timeslot number is less than 6, so remaining time slot is continuous descending time slot; The distribution of ascending time slot and descending time slot is variable.In addition for unified numbering, the time-gap number conversion in second field is the 7+ time-gap number, is 7 such as No. 0 time-gap number of second field, and the rest may be inferred.If adopted short pulse, its absolute numbering numbering that can use the descending time slot of front so can be 0 such as the numbering of the short pulse in the preceding field, and the numbering of the short pulse in the back field can be 7.
Embodiment 21: type 2 frame structures, be applied among the LCR TDD, and the random access time slot cycle is 10ms or more than the 10ms, such as 20ms
Relative position: RA-RNTI=0
Absolute position: the time-gap number at RA-RNTI=random access time slot place, 1 or 8 or 10
Embodiment 22: type 2 frame structures, be applied among the LCR TDD, and the random access time slot cycle is 5ms
Relative position: RA-RNTI=0,1
The absolute position: the time-gap number at RA-RNTI=random access time slot place, (1,8) be (2,9) perhaps (4,11) perhaps (6,13) etc. perhaps
Embodiment 23: type 2 frame structures, be applied among the LCR TDD, and the random access time slot cycle is 10ms or more than the 10ms, such as 20ms, short pulse
Relative position: RA-RNTI=0
Absolute position: the time-gap number at RA-RNTI=random access time slot place, 0 or 7 etc.
Embodiment 24: type 2 frame structures, be applied among the LCR TDD, and the random access time slot cycle is 10ms or more than the 10ms, such as 20ms, the expansion pulse occupies 2 time slots
Relative position: RA-RNTI=0
Absolute position: the time-gap number at RA-RNTI=random access time slot place, 1,4 or 12 etc.
Embodiment 25: type 2 frame structures, be applied among the LCR TDD, and the random access time slot cycle is 10ms or more than the 10ms, such as 20ms, the expansion pulse occupies 3 time slots
Relative position: RA-RNTI=0
Absolute position: the time-gap number at RA-RNTI=random access time slot place, 1,2, perhaps 11 etc.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (11)
1. the method for cellular radio communication system is inserted at a terminal at random, it is characterized in that, may further comprise the steps:
The random access time slot of terminal in radio frames sends random access guiding message to the base station;
Said base station as group identification, is added the positional information of said random access time slot in said radio frames accidental access response message to together with private label, and this message is sent to said terminal;
Whether said group identification and private label in its said accidental access response message of receiving of said terminal judges are desired value, if message or data are sent to said base station in said terminal on ascending wireless resource.
2. the method for claim 1 is characterized in that, said ascending wireless resource is contained in the accidental access response message that said base station is said terminal distribution.
3. the method for claim 1 is characterized in that, before carrying out above-mentioned steps, the known available random access time slot in terminal, and will with said random access time slot at the place positional information in the radio frames as said expectation group identification.
4. the method for claim 1 is characterized in that, said private label is the identification number of random access guiding.
5. the method for claim 1; It is characterized in that; When the positional information of said random access time slot in said radio frames was relative position, said relative position was said random access time slot relative sequence number in 1 or a plurality of random access time slots in said radio frames.
6. the method for claim 1 is characterized in that, when the positional information of said random access time slot in said radio frames was the absolute position, said absolute position was the numbering of said random access time slot in said radio frames.
7. the method for claim 1; It is characterized in that; When the time of reception length of window of said accidental access response message be not more than subframe in the radio frames or number of time slots by 2 power power divide exactly as a result the time, the absolute position of said random access time slot in said radio frames is numbering and the said mould of dividing exactly result of said random access time slot in said radio frames.
8. the generation method of a group identification is applied to the terminal and inserts at random in the process of cellular radio communication system, it is characterized in that, may further comprise the steps:
The base station is receiving the terminal after the random access guiding message of its transmission, judges the positional information of random access time slot in its place radio frames at said random access guiding message place;
With this positional information as group identification.
9. method as claimed in claim 8; It is characterized in that; When the positional information of said random access time slot in said radio frames was relative position, said relative position was said random access time slot relative sequence number in 1 or a plurality of random access time slots in said radio frames.
10. method as claimed in claim 8 is characterized in that, when the positional information of said random access time slot in said radio frames was the absolute position, said absolute position was the numbering of said random access time slot in said radio frames.
11. method as claimed in claim 8; It is characterized in that; When the time of reception length of window of accidental access response message be not more than subframe in the radio frames or number of time slots by 2 power power divide exactly as a result the time, the absolute position of said random access time slot in said radio frames is numbering and the said mould of dividing exactly result of said random access time slot in said radio frames.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101615183A CN101128062B (en) | 2007-09-24 | 2007-09-24 | Method for terminal random access to cellular wireless communication system and group identifier generation method |
| EP08800768.7A EP2160048B1 (en) | 2007-09-24 | 2008-09-03 | Terminal random access method for cellular radio communications system and method for generating group identifier |
| PCT/CN2008/072256 WO2009039749A1 (en) | 2007-09-24 | 2008-09-03 | Terminal random access method for cellular radio communications system and method for generating group identifier |
| JP2010520412A JP5184639B2 (en) | 2007-09-24 | 2008-09-03 | Terminal random access method and group ID generation method in wireless cellular communication system |
| CA2693140A CA2693140C (en) | 2007-09-24 | 2008-09-03 | Terminal random access method for cellular radio communications system and method for generating group identifier |
| US12/667,387 US8200241B2 (en) | 2007-09-24 | 2008-09-03 | Terminal random access method for cellular radio communications system and method for generating group identifier |
| ES08800768.7T ES2557557T3 (en) | 2007-09-24 | 2008-09-03 | Terminal random access method for a cellular radio system and method to generate a group identifier |
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| CN2007101615183A CN101128062B (en) | 2007-09-24 | 2007-09-24 | Method for terminal random access to cellular wireless communication system and group identifier generation method |
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| US11856610B2 (en) | 2008-01-01 | 2023-12-26 | Pantech Corporation | Method for transmitting and receiving random access request and transmitting and receiving random access response |
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| ES2557557T3 (en) * | 2007-09-24 | 2016-01-27 | Zte Corporation | Terminal random access method for a cellular radio system and method to generate a group identifier |
| CN101547421B (en) * | 2008-03-25 | 2012-06-13 | 中兴通讯股份有限公司 | Method for generating group mark randomly accessed to response message and random access method |
| CN101562897B (en) * | 2008-04-18 | 2010-11-17 | 大唐移动通信设备有限公司 | Method for determining a random access leading sequence response transmit window as well as device and system thereof |
| US9374837B2 (en) * | 2008-08-12 | 2016-06-21 | Google Technology Holdings LLC | Preventing misuse of random access procedure in wireless communication system |
| CN101730191B (en) * | 2008-10-27 | 2013-06-05 | 华为技术有限公司 | Resource allocation method, terminal and communication system |
| CN101784100B (en) * | 2009-01-15 | 2012-10-24 | 北京信威通信技术股份有限公司 | Method for quickly acquiring control channel in wireless communication |
| CN101640922A (en) * | 2009-01-24 | 2010-02-03 | 中兴通讯股份有限公司 | Identification method of downlink component carrier wave in random access process and base station |
| CN101478824B (en) * | 2009-02-02 | 2015-05-13 | 中兴通讯股份有限公司 | Method and base station for identifying downlink component carrier in random access process |
| CN101540978B (en) * | 2009-04-27 | 2013-09-11 | 中兴通讯股份有限公司 | Downlink component carrier wave identification method, synchronous downlink component carrier wave reporting method and device |
| CN102123457B (en) * | 2010-01-11 | 2016-04-13 | 中兴通讯股份有限公司 | Changing method and terminal |
| CN105637781B (en) * | 2014-09-25 | 2019-08-13 | 华为技术有限公司 | Accidental access method, the network equipment and user equipment |
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