CN101415226B - Method and apparatus for improving down pilot time slot resource utilization ratio of TDD system - Google Patents
Method and apparatus for improving down pilot time slot resource utilization ratio of TDD system Download PDFInfo
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Abstract
The invention provides a method for improving the resource utilization rate of a downlink pilot time slot (DwPTS) by a time division duplexing system. The method comprises the following steps: firstly, information sent in an idle frequency band of the DwPTS is set, then the idle frequency band of the DwPTS is used for sending the set information to a user terminal, and the user terminal receives the set information in the idle frequency band of the DwPTS. The invention further provides a device corresponding to the method for improving the resource utilization rate of the DwPTS by the time division duplexing system. Compared with the prior art, the method and the device can improve the frequency resource utilization rate of the DwPTS, reduce waste of the DwPTS resources, increase the use of the DwPTS, and cause no impact on the data transmission rate of the conventional time slots.
Description
Technical field
The present invention relates to the utilization of resources technology of time division duplex (TDD) system, particularly a kind of tdd systems improves the method and the device of descending pilot frequency (DwPTS) time interval resource utilance.
Background technology
TD SDMA (TD-SCDMA) is the technology of unique employing time division duplex (TDD) mode in three kinds of big international standards of 3-G (Generation Three mobile communication system), its evolution system is based on the system that OFDM adjusts, the frame structure first-selection of TDD system be the second class frame structure in LTE system 2 kinds of frame structures determining to support.
The second basic class frame structure is as shown in Figure 1: the frame length of the second class radio frames is 10ms, and each radio frames is split into the field of 2 5ms.Each field is made up of 7 business time-slots of TS0～TS6 (being identified by #0～#6 among Fig. 1) and one group of special time slot.This group special time slot comprises 3 special time slots, is respectively: descending pilot frequency time slot (DwPTS), descending time slot be protection interval (GP) and the uplink pilot time slot (UpPTS) of the switching point needs of up time slot extremely.Each business time-slot is a subframe, and subframe 0 and descending pilot frequency time slot always are used for downlink transfer, and uplink pilot time slot and subframe 1 always are used for uplink.
Wherein, primary synchronization channel (the PrimarySynchronized-Channel that is used to carry out cell initial search is provided in the DwPTS time slot, P-SCH), the position that P-SCH takies system bandwidth as shown in Figure 2, wherein P-SCH only accounts for the part of DwPTS time slot, and its bandwidth is fixed, and does not change with system bandwidth, in the just different system bandwidths, the bandwidth of P-SCH all is the same.
The tight adjacent TS0 time slot of DwPTS time slot, its structure is shown in Fig. 3 a and Fig. 3 b.Have two kinds of CP to select in the OFDM subframe: a kind of is short CP, is most basic option; Another kind is long CP, and long CP can be used for sub-district or many Cell Broadcast CBs on a large scale.Wherein, Fig. 3 a is short Cyclic Prefix (CP) structure, and Fig. 3 b is long CP structure.Among Fig. 3 a, TS0 comprises the OFDM symbol of 9 short CP, and the total length of DwPTS is the length of a long CP and an OFDM symbol; Among Fig. 3 b, TS0 comprises the OFDM symbol of 8 long CP, and the total length of DwPTS also is the length of a long CP and an OFDM symbol.The difference of two kinds of structures is the length difference of CP, the number of symbols difference in each time slot.
In ofdm system, the bandwidth of P-SCH channel is to be determined by access bandwidth minimum in the system.At present, minimum UE access bandwidth is 1.08MHz, that is to say that the bandwidth of P-SCH channel can not surpass 1.08MHz.The bandwidth resources that the OFDM symbol of DwPTS takies are identical with system bandwidth, the P-SCH channel occupancy that carries out down-going synchronous has wherein only been arranged 1.08MHz bandwidth, and residual bandwidth resources all is in idle condition.The a plurality of grades of the general branch of ofdm system bandwidth, as 5MHz, 10MHz, 15MHz and 20MHz, like this, P-SCH only utilizes 1.08MHz wherein, and remaining bandwidth all can be wasted by the free time, and system bandwidth is big more, and the wasting of resources is serious more.
Summary of the invention
In view of this, first main purpose of the present invention is to provide a kind of tdd systems to improve the method for descending pilot frequency (DwPTS) time interval resource utilance, reduces the waste of DwPTS time interval resource.
Second main purpose of the present invention is to provide a kind of tdd systems to improve the device of descending pilot frequency (DwPTS) time interval resource utilance, reduces the waste of DwPTS time interval resource.
Be first aspect that achieves the above object, the invention provides the method that a kind of tdd systems improves the descending pilot frequency time slot resource utilization, may further comprise the steps:
The neighbor cell mixed carrier broadcasting/packet service indication information that A, setting need send in the descending pilot frequency time slot idle frequency band;
B, base station use the descending pilot frequency time slot idle frequency band to send the neighbor cell mixed carrier broadcasting/packet service indication information of described setting to user terminal;
C, user terminal receive the neighbor cell mixed carrier broadcasting/packet service indication information of described setting at the descending pilot frequency time slot idle frequency band.
Wherein, described steps A can for: preserve the information of setting that need in the descending pilot frequency time slot idle frequency band, send at base station and user terminal in advance;
Among the described step C, user terminal directly receives the neighbor cell mixed carrier broadcasting/packet service indication information of described setting according to the information of preserving at the descending pilot frequency time slot idle frequency band.
Described steps A also can comprise:
The information that A1, base station sets need send in the descending pilot frequency time slot idle frequency band;
A2, base station are sent in the notice that sends set information in the descending pilot frequency time slot idle frequency band to user terminal;
Among the described step C, user terminal receives the neighbor cell mixed carrier broadcasting/packet service indication information of described setting at the descending pilot frequency time slot idle frequency band according to the notice of base station.
Among the described step B, pre-configured modulation system and code rate are adopted in the base station, or be notified to the modulation system and the code rate of user terminal, use the descending pilot frequency time slot idle frequency band to send described neighbor cell mixed carrier broadcasting/packet service indication information to user terminal.
Described neighbor cell mixed carrier broadcasting/packet service indication information can comprise: whether neighbor cell exists broadcasting/packet service, and there is each the subframe purposes information under the broadcasting/packet service situation in neighbor cell;
The described use descending pilot frequency time slot of step B idle frequency band to the time that user terminal sends described neighbor cell mixed carrier broadcasting/packet service indication information is: the base station sends when needs carry out neighbor cell measurement;
This method may further include: there is each subframe purposes information under the broadcasting/packet service situation in user terminal according to the neighbor cell in the described indication information, and neighbor cell is measured.
Described steps A 1 may further include: the employed band information of information that sends described setting in the idle frequency band of configurating downlink pilot time slot;
In the described steps A 2, the base station further comprises in described notice: the band information that disposes in the idle frequency band of described descending pilot frequency time slot;
Among the described step C, user terminal receives the neighbor cell mixed carrier broadcasting/packet service indication information of described setting according to the notice of base station on the frequency band of the descending pilot frequency time slot that disposes in the idle frequency band of descending pilot frequency time slot.
The described employed band information of neighbor cell mixed carrier broadcasting/packet service indication information that in the idle frequency band of descending pilot frequency time slot, sends described setting in the configurating downlink pilot time slot can for:
Dispose the fixing information band information that is used to transmit described setting in advance in the idle frequency band in descending pilot frequency time slot; Or pre-configured band resource selection strategy information;
In the steps A 2, the band information of described configuration in advance in the idle frequency band of descending pilot frequency time slot configuration fixing be used to transmit the information band information of described setting or pre-configured band resource selection strategy information;
Among the described step C, user terminal is according to the notice of base station, and fixing frequency band receives the neighbor cell mixed carrier broadcasting/packet service indication information of described setting in the idle frequency band of pre-configured descending pilot frequency time slot; Or, determine the employed frequency band of information of the described setting of transmission earlier by pre-configured band resource selection strategy information, receive the neighbor cell mixed carrier broadcasting/packet service indication information of described setting again at the frequency band of the use of determining.
Be another aspect that achieves the above object, the invention provides the device that a kind of tdd systems improves the descending pilot frequency time slot resource utilization, this device comprises: be arranged on base station side: descending pilot frequency time slot residue band configurations module, descending pilot frequency time slot sending module; With the descending pilot frequency time slot receiver module that is arranged on user terminal;
Described descending pilot frequency time slot residue band configurations module, be used for descending pilot frequency time slot residue frequency band is configured, the neighbor cell mixed carrier broadcasting/packet service indication information that setting need send in the descending pilot frequency time slot idle frequency band sends to the descending pilot frequency time slot sending module;
The descending pilot frequency time slot sending module uses the descending pilot frequency time slot idle frequency band to send the neighbor cell mixed carrier broadcasting/packet service indication information of described setting to user terminal;
The described descending pilot frequency time slot receiver module that is arranged on user terminal receives the neighbor cell mixed carrier broadcasting/packet service indication information of described setting at the descending pilot frequency time slot idle frequency band.
This device can also comprise configuration information notification module that is arranged on base station side and the configuration information receiver module that is arranged on user terminal;
Described descending pilot frequency time slot residue band configurations module further is configured in the residue frequency band of descending pilot frequency time slot and is used to transmit the employed frequency band of described set information, and configuration information is sent to the configuration information notification module;
Described configuration information notification module receives the configuration information that descending pilot frequency time slot residue band configurations module sends, and this configuration information is sent to user terminal;
Be arranged on the configuration information receiver module of user terminal, the configuration information that receives the transmission of configuration information notification module sends to the descending pilot frequency time slot receiver module;
The descending pilot frequency time slot receiver module receives the neighbor cell mixed carrier broadcasting/packet service indication information of described setting according to configuration information at the descending pilot frequency time slot idle frequency band.
As seen from the above technical solutions, this tdd systems of the present invention improves the method and the device of descending pilot frequency (DwPTS) time interval resource utilance, the information that elder generation's setting need send in DwPTS time slot idle frequency band, re-use DwPTS time slot idle frequency band and send the information of described setting to user terminal, user terminal receives the information of described setting at DwPTS time slot idle frequency band.
Because the present invention is the information that sends setting at the idle frequency band of DwPTS time slot to user terminal, therefore, in terms of existing technologies, not only can improve the frequency resource utilance of DwPTS, reduce the waste of DwPTS time interval resource, also increased the purposes of DwPTS, and to the message transmission rate of conventional time slot also without any influence.
Description of drawings
Fig. 1 is the second basic class frame structure schematic diagram;
Fig. 2 takies the position view of system bandwidth for P-SCH;
When Fig. 3 a is weak point CP, TS0 time slot and DwPTS structure of time slot schematic diagram;
Fig. 3 b is during for long CP, TS0 time slot and DwPTS structure of time slot schematic diagram;
Fig. 4 is the method first preferred embodiment process chart of DwPTS time interval resource utilance of the present invention;
Fig. 5 is the method second preferred embodiment process chart of DwPTS time interval resource utilance of the present invention;
Fig. 6 is method the 3rd preferred embodiment process chart of DwPTS time interval resource utilance of the present invention;
Fig. 7 is the preferred embodiment structural representation of the device of DwPTS time interval resource utilance of the present invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
This tdd systems of the present invention improves the method and the device of descending pilot frequency (DwPTS) time interval resource utilance, for improving the frequency resource utilance of DwPTS, the information that elder generation's setting need send in DwPTS time slot idle frequency band, re-use DwPTS time slot idle frequency band and send the information of described setting to user terminal, user terminal receives the information of described setting at DwPTS time slot idle frequency band.
Wherein, the information that setting need send in DwPTS time slot idle frequency band, two kinds of implementations are arranged: a kind of is to configure the information that need send in base station and user terminal in the descending pilot frequency time slot idle frequency band in advance, in this case, before using DwPTS time slot idle frequency band to send the information of setting, just do not needed informing user terminal.Another kind is the information that need be sent in the descending pilot frequency time slot idle frequency band well by base station sets earlier; Be sent in the descending pilot frequency time slot idle frequency band to user terminal by the base station again and send notification of information; At last, user terminal is informed in transmission information in the descending pilot frequency time slot idle frequency band according to notice.
The present invention has expanded the purposes of DwPTS, can send any information of setting at the idle frequency band of DwPTS time slot, below lift three kinds of practical applications earlier embodiment the method for raising DwPTS time interval resource utilance is elaborated.
First preferred embodiment
In the present embodiment, setting need send adjacent sub-district mixed carrier broadcasting/packet service (MBMS) indication information in DwPTS time slot idle frequency band.Referring to Fig. 4, Fig. 4 is the method first preferred embodiment process chart of DwPTS time interval resource utilance of the present invention, and this flow process may further comprise the steps:
Step 401, when the DwPTS bandwidth had residue, the idle frequency band that evolution base station (eNB) is set in the DwPTS time slot sent neighbor cell MBMS indication information.
In this neighbor cell MBMS indication information, comprise not only whether adjacent sub-district exists the MBMS business, and exist at neighbor cell under the situation of MBMS business, also comprise the purposes information of each subframe of adjacent sub-district.These information support the eNB of MBMS business can directly obtain by prior art when operation.
In the concrete neighbor cell MBMS indication information, can comprise the information of a plurality of sub-districts, as 2 or 3, if demanding words, and the DwPTS remaining bandwidth is enough, can comprise more sub-district structure of time slot.A kind of broadcast message structure can for: sub-district ID number: the sub-district structure of time slot
For example, if its ID of neighbor cell is 1111, its structure of time slot utilizes bit information to indicate, and is 0000011, i.e. subframe 6 and subframe 7 MBMS transmission business.So, eNB adds the MBMS indication information structure of this sub-district and is in DwPTS: 11110000011.
Equally, if there are a plurality of cell informations, all use identical structure to indicate and get final product.
Step 402, eNB has added the MBMS indication information by implicit or broadcast mode informing user terminal (UE) in DwPTS.
For eNB, can be undertaken by multiple modes such as implicit notice and broadcasting for information among the DwPTS.
If adopt implicit mode to notify, promptly all preserved setting in advance when having the idle frequency band resource among the DwPTS, with regard to the MBMS transmission indication information at eNB and UE.System bandwidth UE can obtain in broadcast channel, and be used to carry out the bandwidth fixed of primary synchronization channel (P-SCH) among the DwPTS, so as long as when system bandwidth during greater than the bandwidth of synchronizing channel, just can imply indication and give UE, transmitted neighbor cell subframe purposes information among the DwPTS this moment, and UE just can receive accordingly to it.
If adopt the broadcast mode notice, in broadcast channel, broadcast exactly, notice UE: current eNB has transmitted neighbor cell mixed carrier MBMS indication information in DwPTS.
Step 403, UE knows that according to notice eNB has transmitted neighbor cell mixed carrier MBMS indication information in DwPTS.
If adopt implicit mode to indicate, when UE can be known system bandwidth in broadcast channel, know that promptly the DwPTS time slot has remaining bandwidth, know that then eNB has transmitted neighbor cell mixed carrier MBMS indication information in DwPTS.
If adopt the broadcast mode notice, then UE receives broadcast channel, knows that therefrom eNB has transmitted neighbor cell mixed carrier MBMS indication information in DwPTS.
Step 404 when UE need measure neighbor cell, receives and detects DwPTS residue frequency band, obtains neighbor cell mixed carrier MBMS indication information.
In this step, not only can obtain adjacent sub-district and whether have the MBMS business, and exist in adjacent sub-district under the situation of MBMS business, can also obtain each subframe purposes information of adjacent sub-district.
Because the neighbor cell subframe whether information of MBMS transmission business belongs to the control signaling information, need very high demodulation correctness, that is to say that this information does not allow to make mistakes.Therefore, its code rate can be very low, and modulation system can adopt binary phase shift keying (BPSK) modulation.So,, can adopt the modulation system and the code rate of system default for the neighbor cell mixed carrier MBMS indication information that transmits among the DwPTS.Present a lot of control signalings also are to have adopted the mode of this system configured in advance.
Certainly, this code rate and modulation system also still can change, but this just can only be notified to UE by broadcast channel broadcasts.
So if implicit notice, the indication information of DwPTS adopts get over the modulation system and the code rate of agreement earlier, UE has transmitted neighbor cell mixed carrier MBMS indication information in determining DwPTS, just can directly detect; If by broadcast announcement, the indication information of DwPTS can adopt the modulation system and the code rate of prior agreement, also can be by its concrete modulation system and code rate of notice UE in the broadcast channel.
Step 405 when UE measures neighbor cell, according to the purposes information of each subframe of adjacent sub-district in the described indication information, is measured neighbor cell.
In switching, the congested control procedure of load, all need neighbor cell is measured.UE carries out the various measurements of neighbor cell after the purposes that has obtained each subframe of neighbor cell, just can use all frequency pilot signs in all subframes of neighbor cell.
This is that UE need use the frequency pilot sign in the corresponding subframe to measure according to the concrete purposes of known subframe owing in each subframe, all comprised a frequency pilot sign that is used to measure.That is to say if UE does not know the concrete purposes of neighbor cell subframe, just can not measure with the frequency pilot sign in this subframe.Because, this moment, UE was known the concrete purposes of each subframe in the neighbor cell, so can select the pilot tone in the subframe of each purposes correspondence to carry out the various measurements of neighbor cell, obtain neighbor cell measurements accurately and timely, for processes such as sub-district switching provide foundation accurately.
If UE does not obtain neighbor cell mixed carrier MBMS indication information from DwPTS residue frequency band, then UE can according to the neighbor cell subframe purposes indication of broadcasting in the broadcast message, measure according to prior art.This moment, the indication information of the neighbor cell that UE can obtain had two kinds, a kind of be neighbor cell with each subframe of this sub-district whether aspect the MBMS transmission purposes identical, under same case, UE has also just known the purposes of each subframe of neighbor cell, therefore also can utilize whole frequency pilot signs of whole subframes of neighbor cell to measure; Another kind of information is, there is not the MBMS business in neighbor cell, and at this moment, the purposes of each subframe of UE neighbor cell is fixed, and therefore also can use whole frequency pilot signs of neighbor cell to measure.
Need to prove that after the purposes of each subframe of having determined neighbor cell, UE carries out measuring process and the prior art measuring process is identical, the time location difference of the frequency pilot sign that difference only is to use is for measuring process, without any difference.
Second preferred embodiment
In the present embodiment, setting need send correct/incorrect replying (ACK/NACK) information of ordering in DwPTS time slot idle frequency band.Referring to Fig. 5, Fig. 5 is the method second preferred embodiment process chart of DwPTS time interval resource utilance of the present invention, and this flow process may further comprise the steps:
Because it is limited being used to transmit the dedicated frequency band resource of P-SCH in DwPTS, therefore, will there be a large amount of residue band resources to be available for transmitting descending ack/nack signal when system bandwidth greatly the time.Which residue band resource transmits descending ack/nack signal among the concrete employing DwPTS, and mode has multiple.
A kind of mode can be: the residue band resource of descending ack/nack signal is transmitted in pre-configured fixing being used to.Another kind of mode is: according to the band resource selection strategy of configuration, dynamically select to be used to transmit the residue band resource of descending ack/nack signal.
In this step, eNB is broadcast to all UE in the sub-district by dynamic broadcast control channel (D-BCCH) with configuration information.Also can notify each UE respectively with described configuration information by the scheduling controlling channel.
If be pre-configured in fixing band resource in the DwPTS residue frequency band, then directly comprise employed band information in the configuration information; If the employing dynamical fashion, what then comprise in the configuration information is the selection strategy that is used for selecting DwPTS residue band resource.
In the present embodiment, the control information of described transmission ACK/NACK information can comprise: the mode, the transmission sign indicating number sequence that descending ack/nack signal adopted and the corresponding relation of descending ack/nack signal and uplink scheduling control channel that transmit descending ack/nack signal.
Wherein, the mode of transmitting descending ack/nack signal comprises coherent manner and incoherent mode.Transmit sign indicating number sequence that descending ack/nack signal adopts and can be ZC (Zadoff-Chu) sequence or other auto-correlation, the good sequence of cross-correlation performance.
If pre-configured fixing band resource then directly obtains employed band information from configuration information; If the employing dynamical fashion then according to the selection strategy of configuration information intermediate frequency band resources, is selected employed band information, for example select the frequency band adjacent with P-SCH.
In this step, UE obtains ACK/NACK information according to the control information of described transmission ACK/NACK information.If adopt coherent manner to transmit descending ack/nack signal, promptly in transmission signals, comprise frequency pilot sign, then UE can estimate channel according to frequency pilot sign, and then detects descending ack/nack signal.If adopt incoherent mode to transmit descending ack/nack signal, promptly do not comprise frequency pilot sign in Chuan Shu the signal, then UE can directly carry out the incoherent signal detection, detects descending ack/nack signal.
In the present embodiment, transmit descending ack/nack signal, not only can improve the frequency resource utilance of DwPTS, also increased the purposes of DwPTS at the surplus resources of DwPTS, and to the message transmission rate of conventional time slot also without any influence.In addition, can also be used transmit the method for descending ack/nack signal and the method for the descending ack/nack signal of existing transmission at DwPTS, thereby reach the better implement effect.
The 3rd preferred embodiment
In the present embodiment, setting need send uplink power control information in DwPTS time slot idle frequency band.In LTE TDD system, after UE and network side connect, eNB will send uplink power control information to UE.UE utilizes this information that its uplink transmission power is adjusted after receiving the uplink power control information that eNB sends.
Referring to Fig. 6, Fig. 6 is method the 3rd preferred embodiment process chart of DwPTS time interval resource utilance of the present invention, and this flow process may further comprise the steps:
Because it is limited being used to transmit the dedicated frequency band resource of P-SCH in DwPTS, therefore, will there be a large amount of residue band resources to be available for transmitting uplink power control information when system bandwidth greatly the time.Which residue band resource transmits uplink power control information among the concrete DwPTS of employing, and mode has multiple.
A kind of mode can be: the residue band resource of uplink power control information is transmitted in pre-configured fixing being used to.Another kind of mode is: according to the band resource selection strategy of configuration, dynamically select to be used to transmit the residue band resource of uplink power control information.
In this step, eNB is broadcast to all UE in the sub-district by the D-BCCH channel with configuration information.Also can notify each UE respectively with described configuration information by the scheduling controlling channel.
If pre-configured fixing band resource, then directly comprise among the employed DwPTS in the configuration information and remain band information; If the employing dynamical fashion, what then comprise in the configuration information is the selection strategy that is used for selecting DwPTS residue band resource.
If pre-configured fixing band resource then directly obtains employed band information from configuration information; If the employing dynamical fashion then according to the selection strategy of configuration information intermediate frequency band resources, is selected employed band information, dynamical fashion can be identical with second preferred embodiment.
Owing to have corresponding relation between up power control information and the ascending time slot, that is to say that UE should adopt the pairing uplink power control information of this ascending time slot at each ascending time slot, adjusts its uplink transmission power at this time slot.Therefore, in the present embodiment, when the DwPTS time slot sends uplink power control information, also show the pairing ascending time slot of this uplink power control information at DwPTS time slot middle finger.Like this, UE has just obtained the uplink power control information of ascending time slot correspondence.
In the present embodiment, send uplink power control information, not only can improve the frequency resource utilance of DwPTS, also increased the purposes of DwPTS at DwPTS, and to the message transmission rate of conventional time slot also without any influence.In addition, can also be used send the method for uplink power control information and the method for existing transmission uplink power control information at DwPTS, thereby reach the better implement effect.
Then, the device to raising DwPTS time interval resource utilance provided by the invention is elaborated for embodiment.
Referring to Fig. 7, Fig. 7 is the preferred embodiment structural representation of the device of DwPTS time interval resource utilance of the present invention.This device comprises and is arranged on base station side: DwPTS residue band configurations module 701, DwPTS sending module 702 and optional configuration information notification module 704; This device also comprises DwPTS receiver module 703 and the optional configuration information receiver module 705 that is arranged on the UE side.
Wherein, DwPTS residue band configurations module 701 is used for DwPTS residue frequency band is configured, and the information that setting need send in DwPTS time slot idle frequency band sends to DwPTS sending module 702.
Be arranged on the DwPTS receiver module 703 among the UE, receive the information of described setting at DwPTS time slot idle frequency band.
Under the situation of using optional configuration information notification module 704 and configuration information receiver module 705:
Be used to transmit the employed frequency band of described set information in the residue frequency band of DwPTS residue band configurations module 701 also further configurating downlink pilot time slots, and configuration information is sent to configuration information notification module 704.That is, configuration information can comprise in information that setting need send in DwPTS time slot idle frequency band and the DwPTS residue frequency band and is used to transmit the employed band information of described set information.
Configuration information notification module 704 receives the configuration information that DwPTS residue band configurations module 701 sends, and this configuration information is sent to UE.
Be arranged on the configuration information receiver module 705 of UE, the configuration information that receives 704 transmissions of configuration information notification module sends to DwPTS receiver module 703.
If set and in DwPTS time slot idle frequency band, to send adjacent sub-district mixed carrier MBMS indication information.Then this device does not comprise optional configuration information notification module 704 and configuration information receiver module 705 adopting implicit mode to notify UE to comprise under the MBMS indication information situation in the DwPTS time slot; Notify UE in the DwPTS time slot, to comprise at the employing broadcast mode and comprise optional configuration information notification module 704 and configuration information receiver module 705 under the MBMS indication information situation.
Order correct/incorrect replying (ACK/NACK) information or set and need send uplink power control information in DwPTS time slot idle frequency band if set to send in DwPTS time slot idle frequency band, then this device can comprise optional configuration information notification module 704 and configuration information receiver module 705.
By the above embodiments as seen, this tdd systems of the present invention improves the method and the device of DwPTS time interval resource utilance, in terms of existing technologies, not only can improve the frequency resource utilance of DwPTS, reduce the waste of DwPTS time interval resource, also increased the purposes of DwPTS, and to the message transmission rate of conventional time slot also without any influence.
Claims (9)
1. the method for a tdd systems raising descending pilot frequency time slot resource utilization is characterized in that, may further comprise the steps:
The neighbor cell mixed carrier broadcasting/packet service indication information that A, setting need send in the descending pilot frequency time slot idle frequency band;
B, base station use the descending pilot frequency time slot idle frequency band to send the neighbor cell mixed carrier broadcasting/packet service indication information of described setting to user terminal;
C, user terminal receive the neighbor cell mixed carrier broadcasting/packet service indication information of described setting at the descending pilot frequency time slot idle frequency band.
2. the method for claim 1 is characterized in that, described steps A is: preserve the information of setting that need send in base station and user terminal in the descending pilot frequency time slot idle frequency band in advance;
Among the described step C, user terminal directly receives the neighbor cell mixed carrier broadcasting/packet service indication information of described setting according to the information of preserving at the descending pilot frequency time slot idle frequency band.
3. the method for claim 1 is characterized in that, described steps A comprises:
The information that A1, base station sets need send in the descending pilot frequency time slot idle frequency band;
A2, base station are sent in the notice that sends set information in the descending pilot frequency time slot idle frequency band to user terminal;
Among the described step C, user terminal receives the neighbor cell mixed carrier broadcasting/packet service indication information of described setting at the descending pilot frequency time slot idle frequency band according to the notice of base station.
4. as claim 2 or 3 described methods, it is characterized in that, among the described step B, pre-configured modulation system and code rate are adopted in the base station, or be notified to the modulation system and the code rate of user terminal, use the descending pilot frequency time slot idle frequency band to send described neighbor cell mixed carrier broadcasting/packet service indication information to user terminal.
5. the described method of claim 4, it is characterized in that, described neighbor cell mixed carrier broadcasting/packet service indication information comprises: whether neighbor cell exists broadcasting/packet service, and there is each the subframe purposes information under the broadcasting/packet service situation in neighbor cell;
The described use descending pilot frequency time slot of step B idle frequency band to the time that user terminal sends described neighbor cell mixed carrier broadcasting/packet service indication information is: the base station sends when needs carry out neighbor cell measurement;
This method further comprises: there is each subframe purposes information under the broadcasting/packet service situation in user terminal according to the neighbor cell in the described indication information, and neighbor cell is measured.
6. method as claimed in claim 3 is characterized in that, described steps A 1 further comprises: the employed band information of information that sends described setting in the idle frequency band of configurating downlink pilot time slot;
In the described steps A 2, the base station further comprises in described notice: the band information that disposes in the idle frequency band of described descending pilot frequency time slot;
Among the described step C, user terminal receives the neighbor cell mixed carrier broadcasting/packet service indication information of described setting according to the notice of base station on the frequency band of the descending pilot frequency time slot that disposes in the idle frequency band of descending pilot frequency time slot.
7. method as claimed in claim 6 is characterized in that, the described employed band information of neighbor cell mixed carrier broadcasting/packet service indication information that sends described setting in the idle frequency band of descending pilot frequency time slot in the configurating downlink pilot time slot is:
Dispose the fixing information band information that is used to transmit described setting in advance in the idle frequency band in descending pilot frequency time slot; Or pre-configured band resource selection strategy information;
In the steps A 2, the band information of described configuration in advance in the idle frequency band of descending pilot frequency time slot configuration fixing be used to transmit the information band information of described setting or pre-configured band resource selection strategy information;
Among the described step C, user terminal is according to the notice of base station, and fixing frequency band receives the neighbor cell mixed carrier broadcasting/packet service indication information of described setting in the idle frequency band of pre-configured descending pilot frequency time slot; Or, determine the employed frequency band of information of the described setting of transmission earlier by pre-configured band resource selection strategy information, receive the neighbor cell mixed carrier broadcasting/packet service indication information of described setting again at the frequency band of the use of determining.
8. a tdd systems improves the device of descending pilot frequency time slot resource utilization, it is characterized in that this device comprises: be arranged on base station side: descending pilot frequency time slot residue band configurations module, descending pilot frequency time slot sending module; With the descending pilot frequency time slot receiver module that is arranged on user terminal;
Described descending pilot frequency time slot residue band configurations module, be used for descending pilot frequency time slot residue frequency band is configured, the neighbor cell mixed carrier broadcasting/packet service indication information that setting need send in the descending pilot frequency time slot idle frequency band sends to the descending pilot frequency time slot sending module;
The descending pilot frequency time slot sending module uses the descending pilot frequency time slot idle frequency band to send the neighbor cell mixed carrier broadcasting/packet service indication information of described setting to user terminal;
The described descending pilot frequency time slot receiver module that is arranged on user terminal receives the neighbor cell mixed carrier broadcasting/packet service indication information of described setting at the descending pilot frequency time slot idle frequency band.
9. device as claimed in claim 8 is characterized in that, this device also comprises configuration information notification module that is arranged on base station side and the configuration information receiver module that is arranged on user terminal;
Described descending pilot frequency time slot remains the band configurations module, further is configured in the descending pilot frequency time slot residue frequency band to be used to transmit the employed frequency band of described set information, and configuration information is sent to the configuration information notification module;
Described configuration information notification module receives the configuration information that descending pilot frequency time slot residue band configurations module sends, and this configuration information is sent to user terminal;
Be arranged on the configuration information receiver module of user terminal, the configuration information that receives the transmission of configuration information notification module sends to the descending pilot frequency time slot receiver module;
The descending pilot frequency time slot receiver module receives the neighbor cell mixed carrier broadcasting/packet service indication information of described setting according to configuration information at the descending pilot frequency time slot idle frequency band.
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| CN2007101758986A CN101415226B (en) | 2007-10-15 | 2007-10-15 | Method and apparatus for improving down pilot time slot resource utilization ratio of TDD system |
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| CN2007101758986A CN101415226B (en) | 2007-10-15 | 2007-10-15 | Method and apparatus for improving down pilot time slot resource utilization ratio of TDD system |
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| CN101415226B true CN101415226B (en) | 2010-06-23 |
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| CN106559204B (en) | 2015-09-29 | 2020-05-26 | 电信科学技术研究院 | Pilot frequency configuration method and device |
| CN111132086A (en) * | 2018-10-31 | 2020-05-08 | 电信科学技术研究院有限公司 | Information processing method and terminal |
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