CN101128063B - 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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- CN101128063B CN101128063B CN2007101615198A CN200710161519A CN101128063B CN 101128063 B CN101128063 B CN 101128063B CN 2007101615198 A CN2007101615198 A CN 2007101615198A CN 200710161519 A CN200710161519 A CN 200710161519A CN 101128063 B CN101128063 B CN 101128063B
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Abstract
The utility model relates to a method for random access of terminal to cellular wireless communication system and creating group identifier, comprising following steps: a random time slot with a terminal in a wireless frame sends random access fronting information to a base station; the base station combines location information in the random time slot of the wireless frame and a frequency domaininto a group identifier, adds the group identifier with a individual identifier into responding information, and sends the information to the terminal; the terminal judges if the group identifier andthe individual identifier of random receiving information are expected value, if does, the terminal sends information and message to the base station on the uplink wireless resource. The utility model has the advantages that the group identifier that the random access responding information can be identified without SFN reading, which is important for random access during switching process, and the method is available for any configuration of the random access time slot.
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 be calculated a group identification on the system time and the absolute position on the frequency domain according to random access time slot, 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.The another one problem is on frequency domain, to adopt the method for absolute position can cause the information bit of group identification redundant, because in general, not every ascending wireless resource all can be configured to random access resource in a TTI; And if if up RACH adopts the method for similar frequency hopping, the absolute position will change along with change of time, thereby has increased the complexity and the probability of errors of group identification coding.
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;
The base station is synthetic as group identification positional information and the positional information on frequency domain of random access time slot in radio frames, add accidental access response message to together with private label after, 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, carry out institute in steps before, the known available random access time slot in terminal, and random access time slot synthesized the expectation group identification in its place positional information and positional information on frequency domain in radio frames.
Further, private label is the identification number of random access guiding.
The method of further, positional information and the positional information on frequency domain of random access time slot in radio frames being synthesized comprises: the mode of combined index or the method that merges then of coding respectively.
Further, in the group identification, the coding of the positional information of random access time slot on frequency domain is in a high position.
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.
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 relative position of random access time slot in radio frames is the relative sequence number of the numbering of random access time slot in radio frames in dividing exactly range of results.
Further, random access time slot is the relative position of RACH on frequency domain in the positional information on the frequency domain: only disposed 1 RACH in like the sub-district, then the position of random access time slot on frequency domain is set to 0; As having disposed a plurality of RACHs in the sub-district; If do not adopt the strategy of frequency hopping, so RACH is arranged to the occupied frequency band of different RACHs sequence number according to ascending order or descending in the current area carrier bandwidths at the relative position on the frequency domain; If adopted the strategy of frequency hopping, RACH is arranged to different RACHs in the occupied frequency band of the initial position of frequency domain sequence number according to ascending order or descending in the current area carrier bandwidths at the relative position on the frequency domain.
Further, random access time slot is the order that RACH occurs in signaling in the positional information on the frequency domain.
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, positional information and the positional information on frequency domain of the random access time slot of judging random access guiding message place in its place radio frames;
Above-mentioned two positional informations are synthesized the back as group identification.
The method of further, positional information and the positional information on frequency domain of random access time slot in radio frames being synthesized comprises: the mode of combined index or the method that merges then of coding respectively.
Further, in the group identification, the coding of the positional information of random access time slot on frequency domain is in a high position.
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.
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 relative position of random access time slot in radio frames is the relative sequence number of the numbering of random access time slot in radio frames in dividing exactly range of results.
Further, random access time slot is the relative position of RACH on frequency domain in the position on the frequency domain: only disposed 1 RACH in like the sub-district, then the position of random access time slot on frequency domain is set to 0; As having disposed a plurality of RACHs in the sub-district; If do not adopt the strategy of frequency hopping, so RACH is arranged to the occupied frequency band of different RACHs sequence number according to ascending order or descending in the current area carrier bandwidths at the relative position on the frequency domain; If adopted the strategy of frequency hopping, RACH is arranged to different RACHs in the occupied frequency band of the initial position of frequency domain sequence number according to ascending order or descending in the current area carrier bandwidths at the relative position on the frequency domain.
Further, random access time slot is the order that RACH occurs in signaling in the positional information on the frequency domain.
The random access time slot configuring condition of (being in the radio frames) and the configuring condition on the frequency domain on time domain according to the descriptor that inserts Radio Resource at random that obtains, were always known in the terminal before initiating to insert at random.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 wireless telecommunication 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 of wireless telecommunication 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 random access guiding message place random access time slot received base station positional information and the positional information on frequency domain in its place radio frames;
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 positional information and the positional information on frequency domain 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 radio frames and the positional information on frequency domain in the radio frames of random access guiding message place;
(2) coding after synthetic adds in the accidental access response message as group identification with above-mentioned two positions information.
The position 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 a plurality of random access time slots of random access time slot 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 time window maximum length of receiving random access response message (being called for short Wm) can be less than the length of radio frames, the absolute position also can be represented with additive method so.Suppose that N is subframe or a 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
*Be 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.
As a same reason, if M
*Be greater than or equal to Wm, relative position also can be shown in M so
*Relative sequence number in the scope.Absolute position such as above-mentioned random access time slot is 0,3,6, and M
*Value 5, relative position is respectively 0,1,0 so.
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.
Position on the frequency domain is meant the relative position of RACH on frequency domain.If disposed 1 RACH in the sub-district, then the position on frequency domain can simply be set to 0; Otherwise can distinguish relative sequence number according to the actual conditions of RACH on frequency domain configuration.If do not adopt the strategy of frequency hopping, sequence number can simply be arranged to the occupied frequency band of different RACHs sequence number according to ascending order or descending in the current area carrier bandwidths so relatively; If adopted the strategy of frequency hopping, sequence number can be arranged to different RACHs in the occupied frequency band of the initial position of frequency domain sequence number according to ascending order or descending in the current area carrier bandwidths so relatively.Also having a kind of method is frequency hopping no matter whether, defines the position on the frequency domain according to the RACH order that (in system message) occurs in signaling.
Bandwidth such as the sub-district is 10Mhz, can dispose 8 RACHs (supposing that each RACH occupies 1.25Mhz) at most.Disposed 2 RACH A and B, according to the method for ascending order on frequency domain, A and the B position on frequency domain is respectively the place (if adopt the strategy of frequency hopping, then being initial position) of the 1st and the 5th 1.25Mhz at present.The order that two RACHs are broadcasted in system message is first A, is B then.According to method as herein described, its relative position is exactly 0,1 so.
Group identification be the position of random access time slot in radio frames (being called for short position T) with frequency domain on the synthesizing of position (being called for short position F).Its synthetic method can adopt the method for combined index, also can adopt the method for encoding and merging then respectively.Have 10 kinds of possibilities such as position T one in certain sub-district, position F has 3 kinds of possibilities.The method of combined index is meant that group identification one has 30 kinds of possibilities, adopts the information bit of 5 bits just passable like this.The method that merges is meant and adopts 4 bits to represent position T, and 2 bits are represented position F, and combining position T and position F then becomes group identification, just group identification needs 6 bits.The sequencing that position T and position F arrange in group identification information in two kinds of methods can not change the essence of group identification, so who all is fine earlier.But in general; Position T is after frame structure definition is accomplished, and no matter all can there be a upper limit relative position or absolute position; Be to be used for the subframe of random access time slot in the frame structure or the maximum number of time slot is fixed, and position F can change along with the size of cell carrier bandwidth.As if a high position that is coded in group identification to the information of position F thus more rationally.
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.
For convenience, suppose among the LTE 4 RACHs of multipotency configuration.Adopt 2 RACHs in an embodiment.There are 2 bits position on the group identification frequency domain (being called for short position F) like this, but only adopts 0 and 1 two value.In addition, the position (be called for short position T) of random access time slot in radio frames adopts 4 bits to represent.Group identification adopts the method that merges, and the position is in a high position on the frequency domain.Can calculate RA-RNTI respectively according to two kinds of obtaining value methods of position T among the embodiment.
Embodiment 01: 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
Relative sequence number=0 of position T
RA-RNTI＝0，16
The subframe numbers at the absolute numbering of position T=random access time slot place is such as 0 or 5 or 9RA-RNTI=(0,16) perhaps (5,21), perhaps (9,25)
Embodiment 02: the Class1 frame structure, be applied in FDD, and the random access time slot cycle is 5ms
Relative sequence number=0,1 of position T
RA-RNTI＝0，1，16，17
The subframe numbers at the absolute numbering of position T=random access time slot place is such as (0,5) perhaps (1,6) perhaps (2,7) perhaps (3,8) perhaps (4,9)
RA-RNTI=(0,5,16,21) is (1,6,17,22) perhaps (2,7,18,23) perhaps (3,8,19,24) perhaps (4,9,20,25) perhaps
Embodiment 03: the Class1 frame structure, be applied in FDD, and the random access time slot cycle is 1ms
Relative sequence number=0,1 of position T, 2,3,4,5,6,7,8,9
RA-RNTI＝0～9，16～25
Absolute numbering=0,1 of position T, 2,3,4,5,6,7,8,9
RA-RNTI＝0～9，16～25
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 sequence number=0 of position T
RA-RNTI＝0，1
The subframe numbers at the absolute numbering of position T=random access time slot place, such as 0,5,8 etc.
RA-RNTI=(0,16) is (5,21) perhaps (8,24) etc. perhaps
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 sequence number=0 of position T
RA-RNTI＝0，1
The subframe numbers at the absolute numbering of position T=random access time slot place, such as 0,3,6 etc.
RA-RNTI=(0,16) is (3,19) perhaps (6,22) etc. perhaps
HCR TDD is as shown in Figure 5 in the method for salary distribution of uplink and downlink timeslot 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 sequence number=0 of position T
RA-RNTI＝0，1
The subframe numbers at the absolute numbering of position T=random access time slot place, 1 or 4 or 9 etc.
RA-RNTI=(1,17) is (4,20) perhaps (9,25) perhaps
Embodiment 12: the Class1 frame structure, be applied in HCR TDD, and the random access time slot cycle is 5ms
Relative sequence number=0,1 of position T
RA-RNTI＝0，1，16，17
The subframe numbers at the absolute numbering of position T=random access time slot place, (1,6) be (2,7) perhaps (3,8) perhaps (4,9) perhaps
RA-RNTI=(1,6,17,22) is (2,7,18,23) perhaps (3,8,19,24) perhaps (4,9,20,25) perhaps
Embodiment 14: the Class1 frame structure, be applied in HCR TDD, and the random access time slot cycle is 10ms or 20ms, the expansion pulse occupies 3 time slots
Relative sequence number=0 of position T
RA-RNTI＝0，1
The subframe numbers at the absolute numbering of position T=random access time slot place, 1,2,6 or 7 etc.
RA-RNTI=(1,17) is (2,18) perhaps (6,22) perhaps (7,23) perhaps
Embodiment 15: 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, the expansion pulse occupies 2 time slots
Relative sequence number=0 of position T
RA-RNTI＝0，1
The subframe numbers at the absolute numbering of position T=random access time slot place is as 1,3 or 8 etc.
RA-RNTI=(1,17) is (3,19) perhaps (8,24) perhaps
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 can be in existing frame outside the time-gap number 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.This numbering does not change them on the time domain and the relative sequence number between other time slots.
Embodiment 21: type 2 frame structures, be applied in LCR TDD, and the random access time slot cycle is 10ms or more than the 10ms, such as 20ms
Relative sequence number=0 of position T
RA-RNTI＝0，1
The time-gap number at the absolute numbering of position T=random access time slot place, 1 or 8 or 10
RA-RNTI=(1,17) is (8,24) perhaps (10,26) perhaps
Embodiment 22: type 2 frame structures, be applied in LCR TDD, and the random access time slot cycle is 5ms
Relative sequence number=0,1 of position T
RA-RNTI＝0，1，16，17
The time-gap number at the absolute numbering of position T=random access time slot place, (1,8) be (2,9) perhaps (4,11) perhaps (6,13) etc. perhaps
RA-RNTI=(1,8,17,24) is (2,9,18,25) perhaps (4,11,20,27) perhaps (6,13,22,29) perhaps
Embodiment 23: type 2 frame structures, be applied in LCR TDD, and the random access time slot cycle is 10ms or more than the 10ms, such as 20ms, short pulse
Relative sequence number=0 of position T
RA-RNTI＝0，1
The time-gap number at the absolute numbering of position T=random access time slot place, 0 or 7 etc.
RA-RNTI=(0,16) is (7,23) perhaps
Embodiment 24: type 2 frame structures, be applied in 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 sequence number=0 of position T
RA-RNTI＝0，1
The time-gap number at the absolute numbering of position T=random access time slot place, 1,4 or 12 etc.
RA-RNTI=(1,17) is (4,20) perhaps (12,28) etc. perhaps
Embodiment 25: type 2 frame structures, be applied in 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 sequence number=0 of position T
RA-RNTI＝0，1
The time-gap number at the absolute numbering of position T=random access time slot place, 1,2, perhaps 11 etc.
RA-RNTI=(1,17) is (2,18) perhaps (11,27) perhaps
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 (21)
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 is synthetic as group identification positional information and the positional information on frequency domain of said random access time slot in said radio frames, add accidental access response message to together with private label after, 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 the 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; It is characterized in that; Carry out institute in steps before, the known available random access time slot in terminal, and said random access time slot synthesized said expectation group identification in its place positional information and positional information on frequency domain in radio frames.
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 is characterized in that, the method that positional information and the positional information on frequency domain of said random access time slot in said radio frames synthesized comprises: the mode of combined index or the method that merges then of coding respectively.
6. method as claimed in claim 5 is characterized in that, in the said group identification, the coding of the positional information of said random access time slot on said frequency domain is in a high position.
7. method as claimed in claim 5; 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.
8. method as claimed in claim 5 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.
9. method as claimed in claim 5; 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.
10. method as claimed in claim 5; 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 relative position of said random access time slot in said radio frames is that the numbering of said random access time slot in said radio frames is in the said relative sequence number that divides exactly in the range of results.
11. method as claimed in claim 5; It is characterized in that; The positional information of said random access time slot on said frequency domain is the relative position of RACH on frequency domain: only disposed 1 RACH in like the sub-district, the position of then said random access time slot on frequency domain is set to 0; As having disposed a plurality of RACHs in the sub-district; If do not adopt the strategy of frequency hopping, so said RACH is arranged to the occupied frequency band of different RACHs sequence number according to ascending order or descending in the current area carrier bandwidths at the relative position on the frequency domain; If adopted the strategy of frequency hopping, said RACH is arranged to different RACHs in the occupied frequency band of the initial position of frequency domain sequence number according to ascending order or descending in the current area carrier bandwidths at the relative position on the frequency domain.
12. method as claimed in claim 5 is characterized in that, the positional information of said random access time slot on said frequency domain is the order that RACH occurs in signaling.
13. 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, positional information and the positional information on frequency domain of the random access time slot of judging said random access guiding message place in its place radio frames;
Above-mentioned two positional informations are synthesized the back as group identification.
14. method as claimed in claim 13 is characterized in that, the method that positional information and the positional information on frequency domain of said random access time slot in said radio frames synthesized comprises: the mode of combined index or the method that merges then of coding respectively.
15. method as claimed in claim 14 is characterized in that, in the said group identification, the coding of the positional information of said random access time slot on frequency domain is in a high position.
16. method as claimed in claim 14; 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.
17. method as claimed in claim 14 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.
18. method as claimed in claim 14; 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.
19. method as claimed in claim 14; 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 relative position of said random access time slot in said radio frames is that the numbering of said random access time slot in said radio frames is in the said relative sequence number that divides exactly in the range of results.
20. method as claimed in claim 14; It is characterized in that; The position of said random access time slot on said frequency domain is the relative position of RACH on frequency domain: only disposed 1 RACH in like the sub-district, the position of then said random access time slot on frequency domain is set to 0; As having disposed a plurality of RACHs in the sub-district; If do not adopt the strategy of frequency hopping, so said RACH is arranged to the occupied frequency band of different RACHs sequence number according to ascending order or descending in the current area carrier bandwidths at the relative position on the frequency domain; If adopted the strategy of frequency hopping, said RACH is arranged to different RACHs in the occupied frequency band of the initial position of frequency domain sequence number according to ascending order or descending in the current area carrier bandwidths at the relative position on the frequency domain.
21. method as claimed in claim 14 is characterized in that, the positional information of said random access time slot on said frequency domain is the order that RACH occurs in signaling.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101615198A CN101128063B (en) | 2007-09-24 | 2007-09-24 | Method for terminal random access to cellular wireless communication system and group identifier generation method |
| 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 |
| 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 |
| 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 |
| JP2010520412A JP5184639B2 (en) | 2007-09-24 | 2008-09-03 | Terminal random access method and group ID generation method in wireless cellular communication system |
| 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 |
| CA2693140A CA2693140C (en) | 2007-09-24 | 2008-09-03 | Terminal random access method for cellular radio communications system and method for generating group identifier |
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| CN2007101615198A CN101128063B (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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| CN101128063A CN101128063A (en) | 2008-02-20 |
| CN101128063B true CN101128063B (en) | 2012-05-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2160048B1 (en) * | 2007-09-24 | 2015-12-23 | ZTE Corporation | Terminal random access method for cellular radio communications system and method for generating 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 |
| CN101742682B (en) * | 2008-11-12 | 2013-03-27 | 中兴通讯股份有限公司 | Random access method between terminal and base station in LTE system |
| CN102123457B (en) * | 2010-01-11 | 2016-04-13 | 中兴通讯股份有限公司 | Changing method and terminal |
| CN102196518B (en) * | 2010-03-15 | 2015-01-07 | 联芯科技有限公司 | Processing method and device during cell switching |
| CN108736999B (en) * | 2017-04-18 | 2020-07-07 | 华为技术有限公司 | Time synchronization method and device |
| WO2020087436A1 (en) * | 2018-11-01 | 2020-05-07 | Qualcomm Incorporated | Cell group configuration and backhaul coordination for remote interference management |
| CN110336727B (en) * | 2019-07-05 | 2021-08-03 | 北京神经元网络技术有限公司 | High-speed industrial communication system and communication method |
| CN116017735A (en) * | 2022-01-14 | 2023-04-25 | 中兴通讯股份有限公司 | Information receiving and transmitting method, communication node and storage medium |
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