CN101087469A - A method for realizing random access of user device - Google Patents
A method for realizing random access of user device Download PDFInfo
- Publication number
- CN101087469A CN101087469A CNA2006100828065A CN200610082806A CN101087469A CN 101087469 A CN101087469 A CN 101087469A CN A2006100828065 A CNA2006100828065 A CN A2006100828065A CN 200610082806 A CN200610082806 A CN 200610082806A CN 101087469 A CN101087469 A CN 101087469A
- Authority
- CN
- China
- Prior art keywords
- time slot
- targeting sequencing
- random
- sign indicating
- indicating number
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000012163 sequencing technique Methods 0.000 claims description 36
- 230000008685 targeting Effects 0.000 claims description 36
- 238000013519 translation Methods 0.000 claims description 16
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000001174 ascending effect Effects 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 208000035126 Facies Diseases 0.000 description 1
- 241000264877 Hippospongia communis Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a method of realizing user equipment connecting randomly, the method is: based on difference of covering scene, length of leading sequence is divided into at least one classes, every class is corresponding with a covering scene; during course of random connection, user equipment sends leading sequence which is corresponding with current scene to network side. The method guarantees the matching between capability of random connection and transmission of data within range covered of user equipment in different beehive-type area environment, and the reliability of random connection is guaranteed.
Description
Technical field
The present invention relates to the mobile communication technology field, be meant a kind of realization subscriber equipment (UserEquipment, UE) method that inserts at random especially.
Background technology
Time division duplex Wideband Code Division Multiple Access (WCDMA) (TD-SCDMA) system is the system of unique employing time division duplex (TDD) mode in the three big international standards of 3G (Third Generation) Moblie, supports the transmission of up-downgoing non-symmetrical service, has bigger flexibility on spectrum utilization.This system synthesis has adopted the advanced technology in the radio communications such as smart antenna, uplink synchronous, joint-detection and software radio, makes system have the higher performance and the availability of frequency spectrum.Along with the development and the development of technology of society, people improve constantly the requirement of mobile communication, wish that system can provide the data transport service of big capacity, two-forty, low time delay.In order to satisfy this growing demand, the TD-SCDMA system needs continuous evolution equally and improves performance.
The frame structure of existing TD-SCMDA system as shown in Figure 1.Among Fig. 1, each wireless sub-frame is by seven common time slots (TS0～TS6) constitute with three special time slots.Wherein, common time slot is used for transmitting data, and three special time slots are respectively descending pilot frequency time slot (DwPTS), uplink pilot time slot (UpPTS), translation and protection time slot (GP).DwPTS is used for the down-going synchronous information of transmitting system, as: the descending pilot frequency of cell initial search, UpPTS sends uplink synchronous information when being used for the user and inserting, also promptly when inserting at random user terminal send the targeting sequencing in the random access procedure according to the timing relationship of radio frames so that make the base station in it receives the time interval of UpPTS time slot signal, can receive this targeting sequencing, GP is used to provide the time interval of descending sending time slots to up sending time slots conversion, and its length has determined the maximum of coverage radius of cell.In existing TD-SCMDA system, spreading rate is 1.28Mcps, and bandwidth is 1.6MHz, and the pilot portion of its data division and up-downgoing adopts same signal format.
Existing TD-SCDMA system is because coverage and professional relation is provided, and for the sub-district that difference covers, the length of its targeting sequencing is identical, and like this, under coverage condition on a large scale, the probability of success of Jie Ruing can be affected at random.
At present just in the TD-SCDMA evolution scheme that the Long Term Evolution (LTE) of 3G (Third Generation) Moblie is formulated in the works, in order to obtain the jumbo service of two-forty, need take wideer bandwidth, also the TD-SCDMA evolution system is called broad band time division duplex honey comb system here.The TD-SCDMA evolution system has adopted the OFDM modulation system, can support the above bandwidth of 20MHz, can also be supported in work under the different bandwidth simultaneously, as 1.25MHz, 2.5MHz, 5MHz, 10MHz and 20MHz etc.For coexistence requirement satisfied and existing system, in the TD-SCDMA evolution system, adopted approximate frame structure with existing TD-SCDMA system.In this evolution system, the big covering of supporting cellular net has been proposed, reach 30km and super large covering as radius of society, reach the demand of 100km as radius of society.In the sub-district of big covering radius, in order to transmit data exactly, apart from base station UE far away in limited transmitting power, must adopt the codeword transmission data of low code rate, as adopt R=1/6,1/8, even 1/12 code rate guarantees the accurate transmission of data.Yet, if in the design of Random Access Channel, still adopt existing technology, then be difficult to take into account the requirement of different covering radiuss, make Random Access Channel become a performance bottleneck of TD-SCDMA evolution system, like this, how the frame structure characteristics design relevant terminal accidental access method according to the TD-SCDMA evolution system becomes a challenge.
Summary of the invention
In view of this, the invention provides a kind of method that realizes that subscriber equipment inserts at random, make to have the performance requirement that can satisfy random access procedure than the mobile communication system of large coverage difference requirements.
A kind of method that realizes that subscriber equipment inserts at random provided by the invention, this method is achieved in that
A. according to the difference of covering scene, the length with the targeting sequencing sign indicating number is divided into an above grade in advance, the corresponding covering scene of each grade;
B. in carrying out random access procedure, subscriber equipment sends the targeting sequencing sign indicating number of current place covering scene correspondence to network side.
And, the sub-district that coverage is big, targeting sequencing is long more, and the up-downgoing translation and protection in the physical frame of transmission targeting sequencing is big more at interval.
When the up-downgoing translation and protection is spaced apart translation and protection time slot GP in the TD-SCDMA physical frame, can utilize among the step B then that a part of UpPTS sends described targeting sequencing in the physical frame.
When the up-downgoing translation and protection is spaced apart GP in the TD-SCDMA physical frame and a part of UpPTS time slot; then can utilize another part UpPTS in the described frame among the step B, and whole uplink service time slot TS1 or a part of uplink service time slot TS1 transmission targeting sequencing sign indicating number.
When the up-downgoing translation and protection is spaced apart GP in the TD-SCDMA physical frame and UpPTS, then can utilize UpPTS and whole uplink service time slot TS1 to send described targeting sequencing sign indicating number among the step B.
When the up-downgoing translation and protection is spaced apart GP, the UpPTS of TD-SCDMA physical frame and a part of uplink service time slot TS1, can utilize among the step B that another part uplink service time slot TS1 and whole uplink service time slot TS2 send described targeting sequencing sign indicating number in the described frame.
The bandwidth resources that send the targeting sequencing sign indicating number in the physical frame are divided into a plurality of subbands, each subband takies the part that system sends bandwidth, there is the multiple relation in bandwidth between two different subbands, and minimum subband is to carry out the required minimum bandwidth of non-synchronized random access procedure, then send targeting sequencing step can for: subscriber equipment according to self transmitting capacity and channel condition, select one of them subband to send targeting sequencing sign indicating number.
The present invention is directed to the sub-district of different covering scene, the length of different targeting sequencing (Preamble) sign indicating number is set, under big coverage condition, adopt long Preamble sign indicating number, and under little coverage condition, then adopt short Preamble sign indicating number, to adapt to the requirement of varying environment.Simultaneously, owing to, adjusted frame structure according to different Preamble length.Adopt this mode, guaranteed in different cellular cell environment, the transmission data capability is complementary in the access capability at random of UE and the coverage, has guaranteed the reliability that inserts at random.
Further, by inserting at random, UE can finish and the synchronous of system and power control, can also synchronization accuracy be controlled within CP (CyclicPrefix) length, thereby reduce the mutual interference between the UE according to adjust sending time of data with the distance of base station, thereby reduced collision probability, simultaneously, make the base station, reduce the interference of minizone according to the power that the distance control UE of UE sends signal.
Description of drawings
Fig. 1 is the frame structure schematic diagram of TD-SCMDA and evolution system thereof;
Fig. 2 is for realizing the schematic flow sheet of the inventive method;
Fig. 3 is the division schematic diagram of UpPTS time interval resource on the 5MHz frequency domain;
Fig. 4 A, Fig. 4 B are respectively the frame structure schematic diagram of little coverage cell and medium coverage sub-district;
Fig. 5 A, Fig. 5 B are respectively the frame structure schematic diagram of little coverage cell and large coverage sub-district;
Fig. 6 A, Fig. 6 B are respectively the frame structure schematic diagram of little coverage cell and super large coverage sub-district.
Embodiment
Studies show that, identical transmitting power and cell configuration environment facies with situation under, the coverage radius of cell difference, also different to the demand of the length of targeting sequencing.In the little sub-district of covering radius, the signal to noise ratio of cell edge is also than higher, and the speed of transmission data is relatively also higher, at this moment, inserts at random under false alarm rate and the error rate identical, and the length of targeting sequencing can be lacked.And under the bigger situation of coverage radius of cell, as described above, the signal to noise ratio of cell edge is lower, and the speed of transmission data is little, in order to guarantee that the length of its targeting sequencing can be longer under the false alarm rate of access at random and error rate identical with the little sub-district of radius.Specific as follows, the code rate of establishing the transmission data is R, and the code length of targeting sequencing is N, and the sample frequency of system is V, in order to guarantee certain false alarm rate of access at random and error rate, needs certain sequence spread spectrum gain.If the spreading gain of sequence is E
p/ N
0, wherein, E
p=E
cN, E
cBe the power spectrum of each chip of targeting sequencing, N
0It is the power spectrum of noise.For inserting at random, the signal to noise ratio that the transmission data need is E
b/ N
0, E
bIt is the power spectrum of signal.Following equation is then arranged:
In order to allow UE can insert the TD-SCDMA evolvement network efficiently, finish the process that UE initially inserts Cellular Networks, the present invention is according to the difference of covering scene, the length of Preamble sign indicating number is divided into a plurality of grades, long Preamble sign indicating number is adopted in the sub-district that coverage is big, and the little sub-district of coverage, then adopt short Preamble sign indicating number, the corresponding covering scene of the Preamble sign indicating number of each grade; Each covering scene can comprise an independent sub-district or a plurality of sub-district.Like this, the Preamble sign indicating number grade of self correspondence is broadcasted in each sub-district, when subscriber equipment inserts at random, utilizes the Preamble sign indicating number of sub-district, current place correspondence to insert at random.
Referring to shown in Figure 2, realize that method of the present invention may further comprise the steps:
Step 201: according to the difference of covering scene, the length with targeting sequencing is divided into an above grade in advance, the corresponding covering scene of each grade;
Step 202: in carrying out random access procedure, subscriber equipment sends the targeting sequencing of current place covering scene correspondence to network side.
In actual application, can utilize frame structure shown in Figure 1 and, the UpPTS time slot among Fig. 1 and other uplink service time slot are made up according to the difference of covering scene, send the Preamble sign indicating number.
For example, the length of Preamble sign indicating number is divided into four grades, the sub-district of the corresponding different coverages of the Preamble sign indicating number of each grade, be little coverage, medium coverage, large coverage and super large coverage, describe subscriber equipment sends the Preamble sign indicating number in random access procedure mode respectively at different brackets below.
First kind: the send mode of the Preamble sign indicating number of little coverage sub-district
Sub-district for little coverage, can utilize in the frame structure shown in Figure 1, situation according to system's transmission bandwidth is divided into a plurality of subbands with the bandwidth resources in the UpPTS time slot, i.e. the UpPCH channel, each subband takies the part that system sends bandwidth, the subband of dividing can be unequal, but there is the multiple relation in the bandwidth between two different subbands, and the bandwidth that promptly is subband 1 is B1, the bandwidth of subband 2 is B2, B
2=kB
1, k is an integer.The minimum subband of dividing is to carry out the required minimum bandwidth of non-synchronized random access procedure.
UE according to the subband situation of dividing in the UpPTS time slot, and the transmitting capacity of UE and channel condition, selects one of them UpPCH channel to send Preamble sign indicating number when inserting at random.
Fig. 3 is the division schematic diagram of UpPTS time interval resource on the 5MHz frequency domain.As shown in Figure 3, it is 5MHz that the base station sends bandwidth, and the 5MHz bandwidth in the UpPTS time slot is divided into 4 parts, and the subband of every part is wide to be 1.25MHz, and each subband is a UpPCH channel.User in this sub-district can by in the UpPTS time slot arbitrarily UpPCH channel send the process that targeting sequencing inserts at random.Increase owing to send the resource of targeting sequencing, the collision probability of the targeting sequencing that sends between UE reduces, and has improved the probability that inserts, and has improved access speed.
In the frame structure of Fig. 1, because the total length of three special time slot DwPTS, GP1 and UpPTS has only 0.275ms, therefore, the UpPTS slot length is limited, the Preamble code length that sends on the UpPCH channel also is restricted, and is applicable to the less situation that covers.
Second kind: the send mode of the Preamble sign indicating number of medium coverage sub-district
For the situation of medium covering, GP1, UpPTS and TS1 time slot need be bundled consideration together, set the mode that suitable TDD up-downgoing translation and protection interval and Preamble sign indicating number send, TS1 is an ascending time slot here.
Fig. 4 A and Fig. 4 B have provided the frame structure contrast of little coverage and medium coverage respectively.Shown in Fig. 4 B, for the frame structure of medium coverage, it is longer that GP1 becomes in order to satisfy coverage, and UpPTS time slot and TS1 time slot merge, and have formed new TS1 ' time slot.In TS1 ' time slot, system disposes one or more UpPCH channels and is used to send the Preamble sign indicating number according to the needs that UE inserts at random.When a plurality of UpPCH channel of configuration, each channel can adopt different bandwidth, but there is the multiple relation in the bandwidth of two different UpPCH interchannels, and is as above identical in the face of the description of a plurality of UpPCH channels under the little covering.The time span of UpPCH channel occupancy has taken the length of part or isometric and TS1 ' time slot.Provide the embodiment of UpPCH channel occupancy part TS1 ' time slot in Fig. 4 B, other channel resources of TS1 ' time slot can be used for the transmission of data and control signaling.
For the UpPCH channel among Fig. 4 B, its length is longer than the UpPCH channel under covering among a small circle, and therefore, the length of the Preamble sign indicating number of transmission is also longer, and can satisfy to cover increases the back to the requirement of access performance at random.
The third: the send mode of the Preamble sign indicating number of large coverage sub-district
For the situation of big covering, GP1, UpPTS and TS1 time slot need be bundled consideration together equally, this moment, TS1 was an ascending time slot, set the mode that suitable TDD up-downgoing translation and protection interval and Preamble sign indicating number send.
Fig. 5 A, Fig. 5 B have provided the frame structure contrast of little coverage and large coverage respectively.Shown in Fig. 5 B, in order to satisfy the demand of big coverage cell, descending protection to up conversion needs longer at interval.Therefore, here GP1 under the little overlay environment and UpPTS time slot are merged, form new protection time slot GP1 '.Simultaneously, in the TS1 time slot, system disposes one or more UpPCH channels and is used to send the Preamble sign indicating number according to the needs that UE inserts at random.When a plurality of UpPCH channel of configuration, each channel can adopt different bandwidth, but there is the multiple relation in the bandwidth of two different UpPCH interchannels.The UpPCH channel occupancy length of whole TS1 ' time slot.In Fig. 5 B, if being the channel resource of UpPCH channel configuration, system only taken the frequency resource of part in TS1 ' time slot, then the remaining frequency resource of TS1 ' time slot can be used for the transmission of data and control signaling.
At this moment, send in the UpPCH channel of Preamble sign indicating number in TS1 ' time slot, because the length and the TS1 ' time slot of UpPCH channel are isometric, the length of the Preamble sign indicating number of transmission is also long, and can satisfy to cover increases the back to the requirement of access performance at random.
The 4th kind: the send mode of the Preamble sign indicating number of super large coverage sub-district
Situation for super large covers need bundle consideration together with GP1, UpPTS and TS1, TS2 time slot, and this moment, TS1, TS2 were ascending time slot, sets the mode that suitable TDD up-downgoing translation and protection interval and Preamble sign indicating number send.
Fig. 6 A, Fig. 6 B have provided the frame structure contrast signal of little coverage and super large coverage.Shown in Fig. 6 B; in order to satisfy the demand of big coverage cell, descending protection to up conversion needs longer at interval, therefore; the length of GP1 ' time slot etc. is longer than the length of TS0 time slot, and this moment, GP1 ' time slot comprised the part of original GP1, UpPTS time slot and TS1 time slot in time.In order to send longer Preamble sign indicating number, slot length that TS1 is remaining and TS2 time slot merge, and form new TS1 ' time slot.
Need to prove, in above the present invention, send in the mode of Preamble sign indicating number that the time slot or the part time slot that relate to the frame structure that takies the TD-SCDMA system are meant time domain and the frequency domain resource that takies this time slot.
Claims (7)
1, a kind of method that realizes that subscriber equipment inserts at random is characterized in that, this method may further comprise the steps:
A. according to the difference of covering scene, the length with the targeting sequencing sign indicating number is divided into an above grade in advance, the corresponding covering scene of each grade;
B. in carrying out random access procedure, subscriber equipment sends the targeting sequencing sign indicating number of current place covering scene correspondence to network side.
2, according to the described method that inserts at random of claim 1, it is characterized in that, the sub-district that coverage is big, targeting sequencing is long more, and the up-downgoing translation and protection in the physical frame of transmission targeting sequencing is big more at interval.
3, according to the described method that inserts at random of claim 2; it is characterized in that; when the up-downgoing translation and protection is spaced apart translation and protection time slot GP in the time division duplex Wideband Code Division Multiple Access (WCDMA) TD-SCDMA physical frame, utilize among the step B then that a part of uplink pilot time slot UpPTS sends described targeting sequencing in the physical frame.
4, according to the described method that inserts at random of claim 2; it is characterized in that; when the up-downgoing translation and protection is spaced apart GP in the TD-SCDMA physical frame and a part of UpPTS; then utilize another part UpPTS time slot in the described frame among the step B, and whole uplink service time slot TS1 or a part of uplink service time slot TS1 transmission targeting sequencing sign indicating number.
5, according to the described method that inserts at random of claim 2, it is characterized in that, when the up-downgoing translation and protection is spaced apart GP in the TD-SCDMA physical frame and UpPTS, then utilize UpPTS and whole uplink service time slot TS1 to send described targeting sequencing sign indicating number among the step B.
6, according to the described method that inserts at random of claim 2; it is characterized in that; when the up-downgoing translation and protection is spaced apart GP, the UpPTS of TD-SCDMA physical frame and a part of uplink service time slot TS1, utilize among the step B that another part uplink service time slot TS1 and whole uplink service time slot TS2 send described targeting sequencing sign indicating number in the described frame.
7, according to any described method that inserts at random in the claim 3～6, it is characterized in that, the bandwidth resources that send the targeting sequencing sign indicating number in the physical frame are divided into a plurality of subbands, each subband takies the part that system sends bandwidth, there is the multiple relation in bandwidth between two different subbands, and minimum subband is to carry out the required minimum bandwidth of non-synchronized random access procedure
The step that then sends targeting sequencing is: subscriber equipment selects one of them subband to send the targeting sequencing sign indicating number according to self transmitting capacity and channel condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100828065A CN101087469B (en) | 2006-06-09 | 2006-06-09 | A method for realizing random access of user device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100828065A CN101087469B (en) | 2006-06-09 | 2006-06-09 | A method for realizing random access of user device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101087469A true CN101087469A (en) | 2007-12-12 |
| CN101087469B CN101087469B (en) | 2010-06-23 |
Family
ID=38938166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100828065A Active CN101087469B (en) | 2006-06-09 | 2006-06-09 | A method for realizing random access of user device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101087469B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009143779A1 (en) * | 2008-05-27 | 2009-12-03 | 大唐移动通信设备有限公司 | A method, system, base station and user equipment for downlink transmission |
| CN101998637A (en) * | 2009-08-18 | 2011-03-30 | 华为技术有限公司 | Method and device for configuring precursor |
| CN102905295A (en) * | 2009-04-22 | 2013-01-30 | 电信科学技术研究院 | Method and device for regulating preamble sequence numbers |
| WO2015021618A1 (en) * | 2013-08-14 | 2015-02-19 | 华为技术有限公司 | Method for randomly accessing network, terminal and base station |
| CN105900515A (en) * | 2014-10-31 | 2016-08-24 | 华为技术有限公司 | Random access method and device |
| CN108738087A (en) * | 2017-04-24 | 2018-11-02 | 中兴通讯股份有限公司 | A kind of switching method, base station and terminal |
| WO2018202012A1 (en) * | 2017-05-02 | 2018-11-08 | 华为技术有限公司 | Method for determining cell, terminal device and network device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5272728A (en) * | 1990-03-20 | 1993-12-21 | Fumio Ogawa | Preamble length adjustment method in communication network and independent synchronization type serial data communication device |
| CN2676274Y (en) * | 2003-09-26 | 2005-02-02 | 英群企业股份有限公司 | Wireless man-machine input device |
-
2006
- 2006-06-09 CN CN2006100828065A patent/CN101087469B/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009143779A1 (en) * | 2008-05-27 | 2009-12-03 | 大唐移动通信设备有限公司 | A method, system, base station and user equipment for downlink transmission |
| CN102905295A (en) * | 2009-04-22 | 2013-01-30 | 电信科学技术研究院 | Method and device for regulating preamble sequence numbers |
| CN102905295B (en) * | 2009-04-22 | 2014-11-12 | 电信科学技术研究院 | Method and device for regulating preamble sequence numbers |
| CN101998637A (en) * | 2009-08-18 | 2011-03-30 | 华为技术有限公司 | Method and device for configuring precursor |
| CN101998637B (en) * | 2009-08-18 | 2014-06-11 | 华为技术有限公司 | Method and device for configuring precursor |
| CN105247942A (en) * | 2013-08-14 | 2016-01-13 | 华为技术有限公司 | Method for randomly accessing network, terminal and base station |
| WO2015021618A1 (en) * | 2013-08-14 | 2015-02-19 | 华为技术有限公司 | Method for randomly accessing network, terminal and base station |
| CN109547186A (en) * | 2013-08-14 | 2019-03-29 | 华为技术有限公司 | A kind of method of Network with Random Multiple Access System, terminal and base station |
| CN105247942B (en) * | 2013-08-14 | 2020-02-14 | 华为技术有限公司 | Method, terminal and base station for randomly accessing network |
| CN105900515A (en) * | 2014-10-31 | 2016-08-24 | 华为技术有限公司 | Random access method and device |
| CN105900515B (en) * | 2014-10-31 | 2019-05-07 | 华为技术有限公司 | A kind of accidental access method and equipment |
| CN108738087A (en) * | 2017-04-24 | 2018-11-02 | 中兴通讯股份有限公司 | A kind of switching method, base station and terminal |
| CN108738087B (en) * | 2017-04-24 | 2022-01-25 | 中兴通讯股份有限公司 | Switching method, base station and terminal |
| WO2018202012A1 (en) * | 2017-05-02 | 2018-11-08 | 华为技术有限公司 | Method for determining cell, terminal device and network device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101087469B (en) | 2010-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2592771B1 (en) | A method, device, and terminal for physical layer random access in wideband tdd mobile communication system | |
| US8681706B2 (en) | Transmission method and device in long term evolution time division duplex system | |
| CN102355673B (en) | Cellular communication system and method for coexistence of dissimilar systems | |
| CN100566232C (en) | The method of supporting changable cover by time division duplex system | |
| CN101202585B (en) | Radio communication base station, terminal and method for obtaining system information | |
| EP1763275A1 (en) | Method of allocating downlink resources and method of receiving the allocated downlink resources in a communication system | |
| CN101087469B (en) | A method for realizing random access of user device | |
| CN101425845A (en) | Transmission method and apparatus for time division duplexing system | |
| CN101399628B (en) | Transmission method and device suitable for coverage requirement in time division duplexing system | |
| CN101374011B (en) | Method for implementing critical frequency coexist between two different communication systems and physical layer frame structure | |
| CN101374012B (en) | Wireless transmission method for TDD OFDM system and physical layer frame structure | |
| CN101399587B (en) | Base station transmission method and device in communication system | |
| CN1996791B (en) | A kind of downlink synchronization method of broadband time and division duplex cellular system | |
| CN1905406B (en) | Synchronous method for wideband time division duplex cellular system | |
| CN101399601B (en) | Time division system frame construction, setting method, processing method and device thereof | |
| CN101399602B (en) | Time division system frame, setting method, processing method and device thereof | |
| KR101391727B1 (en) | Apparatus and method for constructing a frame in a communication system | |
| EP2234298B1 (en) | A transmitting method and system for short physical random access channel based on time division duplex system | |
| CN101383630B (en) | Frame receiving method and device in communication system | |
| CN101383811B (en) | Frame structure in communication system, frame receiving method and device thereof | |
| CN101282191B (en) | Method for implementing outburst type for TD-SCDMA system | |
| CN101383810A (en) | Frame structure in communication system, frame receiving method and device thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: INST OF TELECOMMUNICATION SCIENCE AND TECHNOLGOY Free format text: FORMER OWNER: DATANG MOBILE COMMUNICATION EQUIPMENT CO., LTD. Effective date: 20110510 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100083 NO. 29, XUEYUAN ROAD, HAIDIAN DISTRICT, BEIJING TO: 100191 NO. 40, XUEYUAN ROAD, HAIDIAN DISTRICT, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110510 Address after: 100191 Haidian District, Xueyuan Road, No. 40, Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100083 Haidian District, Xueyuan Road, No. 29, Patentee before: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210527 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
|
| TR01 | Transfer of patent right |