CN101772030B - Method for acquiring time slot proportion of time division duplex (TDD) long term evolution (LTE) system cell in time division synchronous code division multiple access (TD-SCDMA) system - Google Patents
Method for acquiring time slot proportion of time division duplex (TDD) long term evolution (LTE) system cell in time division synchronous code division multiple access (TD-SCDMA) system Download PDFInfo
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- CN101772030B CN101772030B CN2009100764673A CN200910076467A CN101772030B CN 101772030 B CN101772030 B CN 101772030B CN 2009100764673 A CN2009100764673 A CN 2009100764673A CN 200910076467 A CN200910076467 A CN 200910076467A CN 101772030 B CN101772030 B CN 101772030B
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Abstract
The invention discloses a method for acquiring the time slot proportion of a time division duplex (TDD) long term evolution (LTE) system cell in a time division synchronous code division multiple access (TD-SCDMA) system, comprising the following steps of: sending time slot proportion information of a TD-SCDMA system cell to user equipment (UE) inside the TD-SCDMA system cell; and acquiring the time slot proportion information of the adjacent TDD LTE system cell according to the received time slot proportion information and a previously acquired corresponding relationship table of the time slot proportion of the TD-SCDMA system cell and the time slot proportion of the adjacent TDD LTE system cell by the UE. In the invention, the UE can acquire the time slot proportion information of the TD-SCDMA system cell, thereby acquiring the slot proportion information of the adjacent TDD LTE system cell according to corresponding relationship table of the time slot proportion of the TD-SCDMA system cell and the time slot proportion of the adjacent TDD LTE system cell and realizing the access to the adjacent TDD LTE system cell.
Description
Technical field
The present invention relates to TD SDMA (TD-SCDMA; Time Division-SynchronousCode Division Multiple Access) system and time division duplex long-term evolution (TDD LTE; TimeDivision Duplex Long Term Evolved) system's exchanging visit is technological, particularly obtains the method for adjacent TDD LTE system cell time slot proportion in the TD-SCDMA system.
Background technology
Along with the day by day increase of user to mobile and wireless traffic demand; Also continuous evolution be need carry out for the user provides the GSM of service, the ever-increasing speech business of user, data and multimedia service etc. satisfied with message transmission rate with bigger power system capacity and Geng Gao.Time division duplex long-term evolution (TDD LTE; Time Division Duplex Long Term Evolved) technology is that existing GSM TD-SCDMA is from the mainstream technology of 3G to 4G evolution; Has descending 100Mbps; The data transmission capabilities of up 50Mbps, and characteristics such as frequency spectrum flexible configuration, availability of frequency spectrum height, up-downgoing channel reciprocity can satisfy the requirement of user to next generation mobile communication system bandwidth and message transmission rate.
In the TD-SCDMA system in the process of TDD LTE system evolved; In regular period; With the scene that has TD-SCDMA system and TDD LTE coexistence of systems, promptly around the TD-SCDMA system cell, exist and the same frequency/alien frequencies TDD LTE system neighbor cell of TD-SCDMA system cell with frequency band.Subscriber equipment (UE in the TD-SCDMA system; User Equipment) possibly need visit the TDD LTE system of neighbor cell owing to reasons such as joint-detection, switchings; And can carrying out mutual prerequisite with the TDD LTE system of neighbor cell, UE is the time slot proportion information of the known TDD LTE of this UE.But in prior protocols, UE can't be known the time slot proportion information of TDD LTE, and therefore, the UE in the TD-SCDMA system also just can't initiate relevant accessing operations such as measurement, selection, gravity treatment and access to adjacent TDD LTE system cell.
Simultaneously; TD-SCDMA system cell for fear of coexistence produces mutual interference mutually with TDD LTE system cell; Even the phenomenon generation that causes system to work, the time slot proportion of TD-SCDMA system cell and adjacent TDD LTE system cell satisfies certain constraints.That is to say the time slot proportion information of the TDD LTE system cell that can obtain to coexist according to the time slot proportion information of TD-SCDMA system cell.Based on this;, the UE in the TD-SCDMA system cell (visits the situation of adjacent TD-SCDMA system cell for the UE in the TDD LTE system cell when need visiting adjacent TDDLTE system cell; Will not discuss in the present invention); Can obtain adjacent TDD LTE system cell time slot proportion information according to TD-SCDMA system cell time slot proportion under the UE self and constraints, initiate relevant accessing operations such as measurement, selection, gravity treatment and access thereby can accomplish to adjacent TDD LTE system cell.
But in existing single TD-SCDMA system, because the time slot proportion of each adjacent system sub-district need not satisfy certain constraints, thereby the UE in the sub-district need not obtain the time slot proportion information of the TD-SCDMA system cell under this UE yet.Like this; When UE in the TD-SCDMA system cell need visit adjacent TDD LTE system cell; Also can't obtain the time slot proportion information of adjacent TDD LTE system cell according to the constraints of time slot proportion; Thereby can not visit adjacent TDDLTE system cell, carry out operations such as adjacent TDD LTE system cell relevant measurement, selection and gravity treatment and access.
Summary of the invention
In view of this; The invention provides the method for obtaining adjacent TDD LTE system cell time slot proportion in the TD-SCDMA system; UE can obtain the time slot proportion of TD-SCDMA system cell under self; Thereby obtain adjacent TDD LTE system cell time slot proportion, realize accessing operation adjacent TDD LTE system cell.
Obtain the method for adjacent TDD LTE system cell time slot proportion in the TD-SCDMA provided by the invention system, this method comprises:
The time slot proportion information that the TD-SCDMA system cell is current is sent to the user equipment (UE) in this TD-SCDMA system cell;
According to the time slot proportion information that receives and the time slot proportion mapping table of TD-SCDMA system cell time slot proportion of obtaining and adjacent TDD LTE system cell, obtain adjacent TDD LTE system cell time slot proportion information.
Said time slot proportion mapping table comprises: said TD-SCDMA system cell time slot proportion is 5: 1, and corresponding said adjacent TDD LTE system cell time slot proportion is 3: 1; Or,
Said TD-SCDMA system cell time slot proportion is 4: 2, and corresponding said adjacent TDD LTE system cell time slot proportion is 2: 2; Or,
Said TD-SCDMA system cell time slot proportion is 3: 3, and corresponding said adjacent TDD LTE system cell time slot proportion is 2: 2; Or,
Said TD-SCDMA system cell time slot proportion is 2: 4, and corresponding said adjacent TDD LTE system cell time slot proportion is 1: 3; Or,
Said TD-SCDMA system cell time slot proportion is 1: 5, and corresponding said adjacent TDD LTE system cell time slot proportion is 0: 4.
Said time slot proportion mapping table is arranged in the radio network controller (RNC), and RNC is issued to said UE through system message or radio resource control RRC dedicated signaling message when the UE initialization.
UE obtains said time slot proportion mapping table through TDD LTE agreement.
Radio network controller (RNC) is sent to UE this TD-SCDMA system cell in TD-SCDMA system cell time slot proportion information through the base station through system message or radio resource control RRC dedicated signaling message.
The user equipment (UE) that the said time slot proportion information that the TD-SCDMA system cell is current is sent in this TD-SCDMA system cell specifically comprises:
This sub-district time slot proportion information is confirmed not store in UE start back, sends to RNC and obtains this sub-district time slot proportion information request;
RNC is sent to the UE in this TD-SCDMA system cell through system message or the RRC dedicated signaling message time slot proportion information that the TD-SCDMA system cell is current through the base station, and UE receives and storage.
The user equipment (UE) that the said time slot proportion information that the TD-SCDMA system cell is current is sent in this TD-SCDMA system cell specifically comprises:
UE confirms not obtain the current time slot proportion information of time slot proportion mapping table and this sub-district of configuration, sends the time slot proportion mapping table request of obtaining to RNC;
RNC is carried at the time slot proportion mapping table in system message or the RRC dedicated signaling message; Be sent to the UE in this TD-SCDMA system cell through the base station, and in this system message or RRC dedicated signaling message, carry the current time slot proportion information of UE affiliated subdistrict.
The user equipment (UE) that the said time slot proportion information that the TD-SCDMA system cell is current is sent in this TD-SCDMA system cell specifically comprises:
UE confirms not obtain time slot proportion mapping table and this sub-district time slot proportion information of configuration, sends the time slot proportion mapping table request of obtaining to RNC;
RNC increases TD-SCDMA system cell time slot proportion information in the time slot proportion mapping table, and the time slot proportion mapping table is carried in system message or the RRC dedicated signaling message, is sent to the UE in this TD-SCDMA system cell through the base station.
This method further comprises:
Said RNC changes TD-SCDMA system cell time slot proportion relation, and the TD-SCDMA system cell time slot proportion information that changes is carried in system message or the RRC dedicated signaling message, is issued to the UE in this TD-SCDMA system cell;
Said UE obtains adjacent TDD LTE system cell time slot proportion information according to the TD-SCDMA system cell time slot proportion information inquiry time slot proportion mapping table that changes.
Visible by technique scheme; Obtain the method for adjacent TDD LTE system cell time slot proportion in the TD-SCDMA system of the embodiment of the invention, be sent to the user equipment (UE) in this TD-SCDMA system cell through time slot proportion information with the TD-SCDMA system cell; UE obtains adjacent TDD LTE system cell time slot proportion information according to the time slot proportion information that receives and the time slot proportion mapping table of TD-SCDMA system cell time slot proportion of obtaining in advance and adjacent TDD LTE system cell.Thereby make UE can obtain the time slot proportion information of adjacent TDD LTE system cell, realize visit adjacent TDD LTE system cell according to the TD-SCDMA system cell time slot proportion information of obtaining.
Description of drawings
Fig. 1 is for obtaining the method flow sketch map of adjacent TDD LTE system cell time slot proportion in the TD-SCDMA of the present invention system.
Fig. 2 (a) is the time slot proportion first corresponding relation structural representation of TD-SCDMA system cell time slot proportion of the present invention and corresponding adjacent TDDLTE system cell.
Fig. 2 (b) is the time slot proportion second corresponding relation structural representation of TD-SCDMA system cell time slot proportion of the present invention and corresponding adjacent TDDLTE system cell.
Fig. 2 (c) is time slot proportion the 3rd corresponding relation structural representation of TD-SCDMA system cell time slot proportion of the present invention and corresponding adjacent TDDLTE system cell.
Fig. 2 (d) is time slot proportion the 4th corresponding relation structural representation of TD-SCDMA system cell time slot proportion of the present invention and corresponding adjacent TDDLTE system cell.
Fig. 2 (e) is time slot proportion the 5th corresponding relation structural representation of TD-SCDMA system cell time slot proportion of the present invention and corresponding adjacent TDDLTE system cell.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is done further explain.
The embodiment of the invention is applied to visit time division duplex long-term evolution TDD LTE system of TD-SCDMA system; The time slot proportion information of TD-SCDMA system cell is controlled (RRC through system message or Radio Resource; Radio Resource Control) dedicated signaling message is issued to the UE in the TD-SCDMA system cell; UE obtains adjacent TDD LTE system cell time slot proportion information according to the time slot proportion information that receives and the time slot proportion mapping table of TD-SCDMA system cell that obtains in advance and adjacent TDD LTE system cell, thereby realizes the accessing operation to adjacent TDD LTE system cell.
Fig. 1 is for obtaining the method flow sketch map of adjacent TDD LTE system cell time slot proportion in the TD-SCDMA of the present invention system, referring to Fig. 1, this flow process comprises:
Step 101, the time slot proportion mapping table of pre-configured TD-SCDMA system cell time slot proportion and adjacent TDD LTE system cell;
In this step, can be through the time slot proportion mapping table (in describing below, being called for short the time slot proportion mapping table) of dual mode configuration TD-SCDMA system cell and adjacent TDDLTE system cell.
First kind of mode is according to certain rule and tactful in radio network controller (RNC when the network planning; Radio Network Controller) in the time slot proportion mapping table is set; If adopt this mode; Can when the UE initialization, through system message or RRC dedicated signaling message this time slot proportion mapping table be issued to this UE by RNC, UE receives and storage.Wherein, Rule and strategy when the time slot proportion mapping table is set are: guarantee that TD-SCDMA system cell uplink time slot, descending time slot align with adjacent TDD LTE system cell uplink time slot, descending time slot respectively; The uplink and downlink timeslot that makes the adjacent system sub-district is in each transfer point alignment, to avoid the phase mutual interference.
The second way is in corresponding TDD LTE agreement, to provide the time slot proportion mapping table; Like this; After the network planning was good, network side and UE can obtain the TD-SCDMA system cell of configuration and the time slot proportion mapping table of adjacent TDD LTE system cell according to agreement.
It is right that the time slot proportion mapping table comprises a plurality of time slot proportion, promptly a plurality of TD-SCDMA system cell time slot proportion respectively with the corresponding relation of corresponding adjacent TDD LTE system cell time slot proportion.
Fig. 2 (a) is the time slot proportion first corresponding relation structural representation of TD-SCDMA system cell time slot proportion of the present invention and corresponding adjacent TDDLTE system cell.
Fig. 2 (b) is the time slot proportion second corresponding relation structural representation of TD-SCDMA system cell time slot proportion of the present invention and corresponding adjacent TDDLTE system cell.
Fig. 2 (c) is time slot proportion the 3rd corresponding relation structural representation of TD-SCDMA system cell time slot proportion of the present invention and corresponding adjacent TDDLTE system cell.
Fig. 2 (d) is time slot proportion the 4th corresponding relation structural representation of TD-SCDMA system cell time slot proportion of the present invention and corresponding adjacent TDDLTE system cell.
Fig. 2 (e) is time slot proportion the 5th corresponding relation structural representation of TD-SCDMA system cell time slot proportion of the present invention and corresponding adjacent TDDLTE system cell.
Referring to Fig. 2 (a)～2 (e); The TD-SCDMA system cell is divided into seven time slots (TS0～TS6); And three specific regions, i.e. descending pilot frequency time slot (DwPTS, Downlink Pilot TimeSlot), protection be (GP at interval; Guard Period) and uplink pilot time slot (UpPTS, UplinkPilot Time Slot).Wherein, TS0 and DwPTS are fixed for downlink transfer, and TS1 and UpPTS are fixed for uplink, and other time slots can be divided according to system's actual conditions.About TDD LTE system time gap structure, specifically can repeat no more at this referring to relevant TDD LTE agreement.
In the TD-SCDMA system cell time slot proportion, consider TS1～TS6 totally six time slots, have following five kinds of time slot proportion corresponding relations:
(1), TS 1～TS5 is ascending time slot (UL TS; Uplink Time Slot); TS6 is descending time slot (DL TS; Downlink TS), its time slot proportion is: UL TS: DL TS=5: 1 (be designated as: 5: 1/TD), corresponding adjacent TDD LTE system cell time slot proportion is 3: 1 (3: 1/LTE) (referring to Fig. 2 (a));
(2), TS1～TS4 is UL TS, TS5～TS6 is DL TS, its time slot proportion is: UL TS: DL TS=4: 2, corresponding adjacent TDD LTE system cell time slot proportion is 2: 2 (2: 2/LTE) (referring to Fig. 2 (b));
(3), TS1～TS3 is UL TS, TS4～TS6 is DL TS, its time slot proportion is: UL TS: DL TS=3: 3, corresponding adjacent TDD LTE system cell time slot proportion is 2: 2 (2: 2/LTE) (referring to Fig. 2 (c));
(4), TS 1～TS2 is UL TS, TS3～TS6 is DL TS, its time slot proportion is: UL TS: DL TS=2: 4, corresponding adjacent TDD LTE system cell time slot proportion is 1: 3 (1: 3/LTE) (referring to Fig. 2 (d));
(5), TS 1 is UL TS, TS2～TS6 is DL TS, its time slot proportion is: UL TS: DL TS=1: 5, corresponding adjacent TDD LTE system cell time slot proportion is 0: 4 (0: 4/LTE) (referring to Fig. 2 (e));
Step 102, the time slot proportion information that the TD-SCDMA system cell is current is sent to the UE in this TD-SCDMA system cell;
In this step; After the UE start; If confirm not store this sub-district time slot proportion information; Obtain this sub-district time slot proportion information request to the RNC transmission, RNC is sent to the UE in this TD-SCDMA system cell through system message or the RRC dedicated signaling message time slot proportion information that the TD-SCDMA system cell is current through the base station, and UE receives also storage.
In addition; As previously mentioned; The time slot proportion mapping table is set in the step 101 has dual mode, and when adopting wherein first kind of set-up mode, system need be handed down to UE with preset time slot proportioning mapping table; Specifically can further preset time slot proportioning mapping table together be handed down to UE when issuing the current time slot proportion information of TD-SCDMA system cell in this step.
Particularly; If UE does not obtain the time slot proportion mapping table of configuration; Can send the time slot proportion mapping table request of obtaining to RNC through the base station; RNC is carried at the time slot proportion mapping table in system message or the RRC dedicated signaling message, is sent to the UE in this TD-SCDMA system cell through the base station, and in this system message or RRC dedicated signaling message, also carries the current time slot proportion information of UE affiliated subdistrict.
Certainly; Time slot proportion packets of information that also can the UE affiliated subdistrict is current is contained in the time slot proportion mapping table; Promptly in the time slot proportion mapping table, increase TD-SCDMA system cell time slot proportion information, different with other hurdle is; In this time slot proportion one hurdle; Not relevant adjacent TDD LTE system cell time slot proportion information, RNC is carried at this time slot proportion mapping table in system message or the RRC dedicated signaling message, is sent to the UE in this TD-SCDMA system cell through the base station.
Step 103, UE obtains self affiliated TD-SCDMA system cell time slot proportion information;
In this step; UE receiving system message or RRC dedicated signaling message; If what send to RNC is to obtain this sub-district time slot proportion information request, the TD-SCDMA system cell time slot proportion information that comprises in the message that then receives is TD-SCDMA system cell time slot proportion under self; If to the RNC transmission is to obtain the request of time slot proportion mapping table; Comprise time slot proportion mapping table and the current time slot proportion information of UE affiliated subdistrict in the message that then receives; The time slot proportion mapping table that perhaps comprises the current time slot proportion information of UE affiliated subdistrict; For the latter, the single time slot proportioning information that comprises in the time slot proportion mapping table is TD-SCDMA system cell time slot proportion under self.
Step 104, UE obtains adjacent TDD LTE system cell time slot proportion information according to TD-SCDMA system cell time slot proportion information under self and the time slot proportion mapping table that obtains in advance.
In this step; When UE confirm to need the adjacent TDD LTE system cell of visit; According to TD-SCDMA system cell time slot proportion information inquiry time slot proportion mapping table under self; Obtain adjacent TDD LTE system cell time slot proportion information, carry out operations such as adjacent TDD LTE system cell relevant measurement, selection and gravity treatment and access.
So far, this flow process finishes.
In the practical application; When RNC changes TD-SCDMA system cell time slot proportion according to actual needs and concerns; Can initiatively the TD-SCDMA system cell time slot proportion information that changes be carried in system message or the RRC dedicated signaling message; Be issued to UE; UE obtains adjacent TDD LTE system cell time slot proportion information according to the TD-SCDMA system cell time slot proportion information inquiry time slot proportion mapping table that changes, and carries out operations such as adjacent TDD LTE system cell relevant measurement, selection and gravity treatment and access.
Visible by the foregoing description; The present invention is sent to UE through system message or RRC dedicated signaling message with the time slot proportion information of TD-SCDMA system cell; UE is according to the time slot proportion information that receives and the time slot proportion mapping table of TD-SCDMA system cell that obtains in advance and adjacent TDD LTE system cell; Obtain the time slot proportion information of corresponding adjacent TDD LTE system cell, make that UE can be to the operation that conducts interviews of adjacent TDD LTE system cell.
More than lift preferred embodiment; The object of the invention, technical scheme and advantage have been carried out further explain, and institute it should be understood that the above is merely preferred embodiment of the present invention; Not in order to restriction the present invention; All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. obtain the method for adjacent time division duplex long-term evolution TDDLTE system cell time slot proportion in the TD SDMA TD-SCDMA system, it is characterized in that this method comprises:
The time slot proportion information that the TD-SCDMA system cell is current is sent to the user equipment (UE) in this TD-SCDMA system cell;
According to the time slot proportion information that receives and the time slot proportion mapping table of TD-SCDMA system cell time slot proportion of obtaining and adjacent TDD LTE system cell, obtain adjacent TDD LTE system cell time slot proportion information.
2. the method for claim 1 is characterized in that, said time slot proportion mapping table comprises: said TD-SCDMA system cell time slot proportion is 5: 1, and corresponding said adjacent TDD LTE system cell time slot proportion is 3: 1; Or,
Said TD-SCDMA system cell time slot proportion is 4: 2, and corresponding said adjacent TDD LTE system cell time slot proportion is 2: 2; Or,
Said TD-SCDMA system cell time slot proportion is 3: 3, and corresponding said adjacent TDD LTE system cell time slot proportion is 2: 2; Or,
Said TD-SCDMA system cell time slot proportion is 2: 4, and corresponding said adjacent TDD LTE system cell time slot proportion is 1: 3; Or,
Said TD-SCDMA system cell time slot proportion is 1: 5, and corresponding said adjacent TDD LTE system cell time slot proportion is 0: 4.
3. method as claimed in claim 2 is characterized in that, said time slot proportion mapping table is arranged in the radio network controller (RNC), and RNC is issued to said UE through system message or radio resource control RRC dedicated signaling message when the UE initialization.
4. method as claimed in claim 2 is characterized in that, UE obtains said time slot proportion mapping table through TDD LTE agreement.
5. the method for claim 1; It is characterized in that radio network controller (RNC) is sent to UE this TD-SCDMA system cell in TD-SCDMA system cell time slot proportion information through the base station through system message or radio resource control RRC dedicated signaling message.
6. method as claimed in claim 5 is characterized in that, the user equipment (UE) that the said time slot proportion information that the TD-SCDMA system cell is current is sent in this TD-SCDMA system cell specifically comprises:
This sub-district time slot proportion information is confirmed not store in UE start back, sends to RNC and obtains this sub-district time slot proportion information request;
RNC is sent to the UE in this TD-SCDMA system cell through system message or the RRC dedicated signaling message time slot proportion information that the TD-SCDMA system cell is current through the base station, and UE receives and storage.
7. method as claimed in claim 5 is characterized in that, the user equipment (UE) that the said time slot proportion information that the TD-SCDMA system cell is current is sent in this TD-SCDMA system cell specifically comprises:
UE confirms not obtain the current time slot proportion information of time slot proportion mapping table and this sub-district of configuration, sends the time slot proportion mapping table request of obtaining to RNC;
RNC is carried at the time slot proportion mapping table in system message or the RRC dedicated signaling message; Be sent to the UE in this TD-SCDMA system cell through the base station, and in this system message or RRC dedicated signaling message, carry the current time slot proportion information of UE affiliated subdistrict.
8. method as claimed in claim 5 is characterized in that, the user equipment (UE) that the said time slot proportion information that the TD-SCDMA system cell is current is sent in this TD-SCDMA system cell specifically comprises:
UE confirms not obtain time slot proportion mapping table and this sub-district time slot proportion information of configuration, sends the time slot proportion mapping table request of obtaining to RNC;
RNC increases TD-SCDMA system cell time slot proportion information in the time slot proportion mapping table, and the time slot proportion mapping table is carried in system message or the RRC dedicated signaling message, is sent to the UE in this TD-SCDMA system cell through the base station.
9. like claim 3,5 to 8 each described methods, it is characterized in that this method further comprises:
Said RNC changes TD-SCDMA system cell time slot proportion relation, and the TD-SCDMA system cell time slot proportion information that changes is carried in system message or the RRC dedicated signaling message, is issued to the UE in this TD-SCDMA system cell;
Said UE obtains adjacent TDD LTE system cell time slot proportion information according to the TD-SCDMA system cell time slot proportion information inquiry time slot proportion mapping table that changes.
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| CN2009100764673A CN101772030B (en) | 2009-01-05 | 2009-01-05 | Method for acquiring time slot proportion of time division duplex (TDD) long term evolution (LTE) system cell in time division synchronous code division multiple access (TD-SCDMA) system |
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| CN103095435B (en) * | 2011-11-04 | 2016-01-27 | 中国移动通信集团公司 | Determine the method for HARQ pattern, uplink data transmission method and equipment |
| CN103188795B (en) * | 2011-12-28 | 2016-01-20 | 中国移动通信集团北京有限公司 | A kind of method and apparatus promoting TD-LTE and TD-SCDMA adjacent frequency coexistence capacity |
| WO2014019213A1 (en) * | 2012-08-03 | 2014-02-06 | Qualcomm Incorporated | Subframe configurations for lte tdd systems |
| CN105472633B (en) * | 2014-05-29 | 2020-12-29 | 索尼公司 | Electronic device and method for inter-cell synchronization detection for time division duplex wireless communications |
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