CN102624489B - Enhanced control channel transmission method, device and system - Google Patents
Enhanced control channel transmission method, device and system Download PDFInfo
- Publication number
- CN102624489B CN102624489B CN201210074974.5A CN201210074974A CN102624489B CN 102624489 B CN102624489 B CN 102624489B CN 201210074974 A CN201210074974 A CN 201210074974A CN 102624489 B CN102624489 B CN 102624489B
- Authority
- CN
- China
- Prior art keywords
- pdcch
- uers
- transmission
- rnti
- transmission plan
- 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.)
- Active
Links
Abstract
The invention discloses an enhanced control channel transmission method, device and system. A network side sends a main information block transmitted by a physical broadcast channel (PBCH), carries out E-PDCCH (Enhanced-Physical Downlink Control Channel) transmission in a search space according to a determined transmission scheme used by the E-PECCH and simultaneously sends a shared (UE (User Equipment) Specific Reference Signal) for supporting E-PDCCH demodulation in a range of time frequency resources with same E-PDCCH, which are transmitted in the search space. A terminal carries out blind detection by adopting the shared UERS in the search space according to the determined transmission scheme used by the E-PDCCH after receiving the main information block transmitted by the PBCH, and therefore a bandwidth-limited machine type communication (MTC) terminal can receive downlink control information on the enhanced downlink control channel independent of the original E-PDCCH technology.
Description
Technical field
The present invention relates to communication technical field, refer to a kind of method, Apparatus and system of control channel transmission of enhancing especially.
Background technology
At Long Term Evolution (Long Term Evolution, LTE) system or its evolution (LTE-Advanced, LTE-A) in system, terminal receives master sync signal (Primary Synchronous Signal, and auxiliary synchronous signals (Secondary Synchronous Signal PSS), SSS) can cell initial search be completed after, obtain down-going synchronous and cell identifier (ID).Center 1.4MHz frequency range in system bandwidth receives Physical Broadcast Channel (Physical Broadcast Channel, PBCH) Master Information Block (the MasterInformation Block transmitted on, MIB) information, thus the configuration of reading system bandwidth, System Frame Number and physical mixed ARQ indicating channel (Physical Hybrid ARQ Indictor Channel, PHICH).Physical Control Format Indicator Channel (Physical Control Format IndicatorChannel can be determined based on system bandwidth and community ID, PCFICH) frequency domain resource position, thus receive control format instruction (Control FormatIndicator, CFI) determine the OFDM symbol number shared by PDCCH, thus determine the running time-frequency resource that PDCCH uses.Each Physical Downlink Control Channel (Physical DownlinkControl Channel is completed by blind Detecting, PDCCH) concrete running time-frequency resource position, thus realize PDCCH reception, completion system information (SI, System Information) contour level signaling scheduling information reads and corresponding information receives.
The control area of transmission PDCCH is by control channel unit (the Control ChannelElement of logical partitioning, CCE) form, wherein CCE have employed to the mapping of Resource Unit (Resource Element, RE) mode interweaved completely.Downlink Control Information (Downlink Control Information, DCI) transmission is also unit based on CCE, for a subscriber equipment (User Equipment, UE) a DCI can send in N number of continuous print CCE, in LTE system, the possible value of N is 1,2,4,8, be called CCE polymerization grade (Aggregation Level).UE carries out PDCCH blind Detecting in control area, whether search exists the PDCCH sent for it, blind Detecting (or referred to as blind check) namely uses radio network temporary identifier (the Radio Network Temporary Identity of this UE, RNTI) carry out decoding to different DCI format and CCE polymerization grade to attempt, if decoding is correct, then receive the DCI for this UE.LTE UE each descending sub frame in discontinuous reception (Discontinuous Reception, DRX) state needs to carry out blind Detecting to control area, search PDCCH.
In order to reach expansion capacity, frequency domain interference is coordinated, obtain the targets such as antenna gain, LTE version 11 (Release 11, R11) will at Physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH) DCI transmission is carried out in region, namely, the PDCCH (Enhanced PDCCH, E-PDCCH) strengthened.A solution is: the PDCCH sending enhancing in the PDSCH territory while of retaining original PDCCH territory in descending sub frame.Original PDCCH territory still adopts existing transmission and reception technique, uses original PDCCH resource, and this part PDCCH territory is called legacy PDCCH territory.The PDCCH territory strengthened can use more advanced transmission and reception technique, precoding is adopted during as sent, based on user-specific reference signal (UE-specific Reference Signal during reception, UERS) detect, the running time-frequency resource taken beyond legacyPDCCH territory sends, and uses the part resource of original PDSCH, realizes multiplexing with PDSCH by the mode of frequency division, this part PDCCH territory is called E-PDCCH territory, specifically shown in Figure 1.This E-PDCCH and PDSCH is realized multiplexing scheme be called FDM E-PDCCH by frequency division (Frequency Divided Multiplexing, FDM) mode.
At present, the demodulated reference signal of employing UERS port 7 ~ 10 as E-PDCCH has been passed through in LTE-ARAN1 meeting.But, E-PDCCH adopts any transmission plan, how to use these UERS ports, how terminal is known is carried out E-PDCCH demodulation with which port concrete, and whether terminal knows Same Physical Resource Block (Physical Resource Block, the PRB) E-PDCCH corresponding to interior other-end employs which UERS port etc. and there is no final conclusion.
Concrete, whether existing E-PDCCH transmission plan can be divided into centralized (localized) and distributing (distributed) by its resource used continuously on frequency domain, by whether using channel condition information (Channel State Information, CSI) be divided into closed loop and open loop, and open loop policy comprises the open-loop transmission based on precoding and the open-loop transmission based on transmitting diversity.The UERS port that all kinds of transmission plan uses can be one or several in UERS port 7 ~ 10, the UERS port number comprised according to the difference of transmitted DCI and institute's operational version in same PRB can be one or more, be no more than at most 4, and the initialization sequence of corresponding UERS scramble sequence may be and scrambling code identifier (ScramblingIdentity, SCID) or the high-rise configuration parameter of user-specific relevant, to obtain cell splitting or multi-user transmission gain.
At present, E-PDCCH had both supported that localized also supported distributed, may support the scheme of closed loop and open loop simultaneously.The UERS port number comprised according to the difference of transmitted DCI and institute's operational version in the UERS port which kind of transmission plan of concrete use, transmission plan use, the initialization sequence of UERS scramble sequence and same PRB can be notified by high-level signaling one or more needs the in the parameter such as one or more.When there is legacy PDCCH territory and E-PDCCH territory at the same time, if terminal possesses the ability receiving PDCCH and E-PDCCH simultaneously, then can pass through scheduling and the transmission plan relevant parameter of the PDCCH completion system information higher layer signalling message relevant with E-PDCCH configuration, thus ensure transmission and the reception of E-PDCCH.This type of E-PDCCH is called the E-PDCCH relying on legacy PDCCH.
On the one hand, along with machine type communication (Machine Type Communication, MTC) fast development of business, the increasing limitation of traditional sensors network faces and challenge, be badly in need of sensor network and mobile communications network to combine, play mobile communication and cover the features such as wide, reliability is high, transmission delay is little.In order to meet the demand of MTC service, consideration is optimized system and transmission technology by LTE/LTE-A system, to adapt to the feature such as the less radio frequency band of MTC terminal support, less bandwidth processing ability, simpler multiple antennas disposal ability, more flexibly throughput capabilities and caching capabilities, simpler mobility, support package exchange (Packet Switching, PS) territory.
The terminal of Bandwidth-Constrained cannot receive the PDCCH of full bandwidth transmission, cannot receive by the DCI of transmission on legacyPDCCH, therefore the system information of being dispatched by legacy PDCCH and higher layer signalling message be cannot receive, scheduling and the transmission plan relevant parameter of the relevant higher layer signalling message of E-PDCCH configuration also just cannot be obtained by legacy PDCCH.Obviously, the E-PDCCH technology of dependence legacy PDCCH cannot realize the support to Bandwidth-Constrained MTC terminal.
On the other hand, in order to improve spectrum utilization efficiency and ensure that hot spot region covers, consider that non-backward compatible carrier waves improves in spectrum efficiency, unique advantage in AF panel, energy saving etc. under heterogeneous network, will be studied further in the LTE-A R11 stage about the new opplication scene of non-backward compatible carrier waves and detailed design plan.The carrier wave of expansion carrier wave and a kind of non-backward compatible, there is not legacyPDCCH in expansion carrier wave.Same reason, the E-PDCCH technology relying on legacy PDCCH also cannot support that this type of carrier wave carries out work independent of other carrier waves.
Summary of the invention
The invention provides a kind of method, Apparatus and system of control channel transmission of enhancing, the MTC terminal that the program can solve due to Bandwidth-Constrained cannot receive the Downlink Control Information that the PDCCH of full bandwidth transmission transmits and then the technical problem that cannot realize down control channel transmission.
The method of the control channel transmission of a kind of enhancing that the embodiment of the present invention provides, comprises the following steps:
Terminal is after the Master Information Block receiving PBCH transmission, and the transmission plan used according to the Physical Downlink Control Channel E-PDCCH of the enhancing determined adopts sharing users own reference signal UERS to carry out blind Detecting in search volume.
The method of the control channel transmission of a kind of enhancing that the embodiment of the present invention provides, comprises the following steps:
The network side cycle sends the Master Information Block that Physical Broadcast Channel PBCH transmits, and according to the transmission plan that the E-PDCCH determined uses, the transmission of E-PDCCH is carried out in search volume, meanwhile, send within the scope of the running time-frequency resource that the E-PDCCH transmitted in search volume is identical and share UERS to support the demodulation of E-PDCCH.
The control channel transmitting device of a kind of enhancing that the embodiment of the present invention provides, comprising:
Receiving element, for receiving the Master Information Block of PBCH transmission;
Detecting unit, for receive PBCH transmission Master Information Block after, the transmission plan used according to the Physical Downlink Control Channel E-PDCCH of the enhancing determined adopts sharing users own reference signal UERS to carry out blind Detecting in search volume.
The control channel transmitting device of a kind of enhancing that the embodiment of the present invention provides, comprising:
Transmitting element, sends the Master Information Block of Physical Broadcast Channel PBCH transmission for the cycle;
E-PDCCH transmission control unit, for the transmission plan used according to the E-PDCCH determined, in search volume, carry out the transmission of E-PDCCH, meanwhile, send within the scope of the running time-frequency resource that the E-PDCCH transmitted is identical and share UERS to support the demodulation of E-PDCCH in search volume.
The system of the control channel transmission of a kind of enhancing that the embodiment of the present invention provides, comprising:
Terminal, for after the Master Information Block receiving PBCH transmission, the transmission plan used according to the Physical Downlink Control Channel E-PDCCH of the enhancing determined adopts sharing users own reference signal UERS to carry out blind Detecting in search volume.
Base station, the Master Information Block of Physical Broadcast Channel PBCH transmission is sent for the cycle, and according to the transmission plan that the Physical Downlink Control Channel E-PDCCH of the enhancing determined uses, the transmission of E-PDCCH is carried out in search volume, meanwhile, send within the scope of the running time-frequency resource that the E-PDCCH transmitted in search volume is identical and share UERS to support the demodulation of E-PDCCH.
In the present invention program, the network side cycle sends the Master Information Block that PBCH transmits, and according to the transmission plan that the E-PDCCH determined uses, the transmission of E-PDCCH is carried out in search volume, meanwhile, send within the scope of the running time-frequency resource that the E-PDCCH transmitted in search volume is identical and share UERS to support the demodulation of E-PDCCH.Terminal is after the Master Information Block receiving PBCH transmission, the transmission plan used according to the Physical Downlink Control Channel E-PDCCH of the enhancing determined adopts sharing users own reference signal UERS to carry out blind Detecting in search volume, therefore, Bandwidth-Constrained MTC terminal can not rely on the E-PDCCH technology of legacyPDCCH, carries out reception DCI with regard to the down control channel that can be implemented in enhancing.
Accompanying drawing explanation
Fig. 1 is a kind of E-PDCCH structural representation;
Fig. 2 is the structural representation of the system of the control channel transmission of a kind of enhancing in the embodiment of the present invention;
Fig. 3 is the method flow schematic diagram in the control channel transmission of the enhancing of network side realization in the embodiment of the present invention;
Fig. 4 is the method flow schematic diagram in the control channel transmission of the enhancing of end side realization in the embodiment of the present invention;
Fig. 5 is the structural representation at the device of the control channel transmission of the enhancing of network side realization in the embodiment of the present invention;
Fig. 6 is the structural representation at the device of the control channel transmission of the enhancing of end side realization in the embodiment of the present invention.
Embodiment
Shown in Figure 2, in order to the E-PDCCH technology making Bandwidth-Constrained MTC terminal can not rely on legacy PDCCH, down control channel with regard to can be implemented in enhancing carries out reception DCI, embodiments provide a kind of down control channel transmission system of enhancing, this system comprises: network side 21 and terminal 22, wherein
Network side 21 cycle sends the Master Information Block that PBCH transmits, and according to the transmission plan that the E-PDCCH determined uses, the transmission of E-PDCCH is carried out in search volume, meanwhile, send within the scope of the running time-frequency resource that the E-PDCCH transmitted in search volume is identical and share UERS to support the demodulation of E-PDCCH.In specific implementation process, the network side realizing above-mentioned functions can be base station.
Terminal 22 is after the Master Information Block receiving PBCH transmission, and the transmission plan used according to the Physical Downlink Control Channel E-PDCCH of the enhancing determined adopts sharing users own reference signal UERS to carry out blind Detecting in search volume.
In the present embodiment, in described search volume, there is the PRB inside of sharing UERS and do not allow to there is the E-PDCCH carrying out demodulation based on user-specific UERS.Can comprise in described search volume for the DCI of common control information transmission or the DCI for user-specific transfer of data.Here, described search volume can be public search space, also can be non-public search space.
The described DCI for common control information transmission comprises: system information radio network temporary identifier (System Information-Radio Network Temporary Identifier, SI-RNTI), paging RNTI (Paging-RNTI, P-RNTI), Stochastic accessing RNTI (Random Access-RNTI, RA-RNTI), transmission power control Physical Uplink Shared Channel RNTI (Transmit PowerControl-Physical Uplink Shared Channel-RNTI, or transmission power control Physical Uplink Control Channel RNTI (Transmit Power Control-Physical Uplink ControlChannel-RNTI TPC-PUSCH-RNTI), TPC-PUCCH-RNTI) DCI.
The described DCI for user-specific transfer of data comprises use community RNTI (Cell-RNTI, C-RNTI), the DCI of semi-continuous scheduling C-RNTI (Semi-Persistent Scheduling C-RNTI, SPS-C-RNTI) or interim C-RNTI scrambling.
And in order to determine E-PDCCH running time-frequency resource and various transformation parameter more easily, described E-PDCCH can adopt default transmission plan.
Particularly, the transmission plan that E-PDCCH uses is the open-loop transmission scheme based on single UERS port, and data and UERS adopt identical precoding processing.As, suppose that transmitting terminal uses Nt root transmitting antenna, the pre-coding matrix that the E-PDCCH data-signal premultiplication being 1 by the number of plies on each Resource Unit within the scope of a PRB is tieed up with Nt × 1, reference signal on a UERS port within the scope of the PRB that E-PDCCH data-signal uses also carries out precoding processing identical with E-PDCCH data-signal, thus produces the signal to be sent on every root transmitting antenna.Because E-PDCCH data-signal and UERS have employed identical process, can estimate the equivalent channel that E-PDDCH data-signal transmits based on this UERS port at receiving terminal, thus ensure the reception of E-PDCCH.
Particularly, the transmission plan that E-PDCCH uses is the transmitting diversity transmission plan based on 2 UERS ports, and data carry out the corresponding precoding processing of transmitting diversity scheme, and UERS port does not carry out precoding processing.Further, described transmitting diversity scheme can be space frequency block coding (Space-FrequencyBlock Coding, SFBC) or space-time block code (Space-Time Block Coding, STBC) etc.As for SFBC, the layer of the transmitting diversity of 2 antenna ports in LTE/LTE-A standard can be adopted to hint obliquely at method complete and hint obliquely at the layer of E-PDCCH data-signal, then the precoding processing to E-PDCCH data-signal is completed according to the method for precoding of 2 antenna port transmitting diversity in LTE/LTE-A standard, and the reference signal on 2 UERS ports within the scope of the PRB used at E-PDCCH data-signal is not carried out any precoding processing and is placed on the corresponding Resource Unit of different antenna ports respectively, thus obtain the data-signal on 2 antenna ports.Because UERS does not carry out precoding processing, can estimate the space channel that E-PDDCH data-signal transmits based on this UERS port at receiving terminal, thus ensure the reception of E-PDCCH.
Particularly, the transmission plan that E-PDCCH uses is the transmitting diversity transmission plan based on 4 UERS ports, and data carry out the corresponding precoding processing of transmitting diversity scheme, and UERS port does not carry out precoding processing.Further, described transmitting diversity scheme can be that space frequency block coding (Space-FrequencyBlock Coding, SFBC) association frequency domain switches transmitting diversity (Frequency Swithch TranmsitDivistiy, FSTD).As, adopt the layer of the transmitting diversity of 4 antenna ports in LTE/LTE-A standard to hint obliquely at method to complete and hint obliquely at the layer of E-PDCCH data-signal, then the precoding processing to E-PDCCH data-signal is completed according to the method for precoding of 4 antenna port transmitting diversity in LTE/LTE-A standard, and the reference signal on 4 UERS ports within the scope of the PRB used at E-PDCCH data-signal is not carried out any precoding processing and is placed on the corresponding Resource Unit of different antenna ports respectively, thus obtain the data-signal on 4 antenna ports.Because UERS does not carry out precoding processing, can estimate the space channel that E-PDDCH data-signal transmits based on this UERS port at receiving terminal, thus ensure the reception of E-PDCCH.
Particularly, the transmission plan that E-PDCCH uses also can be the space division multiplexing transmission plan based on shared UERS, as adopted the open loop space division multiplexing scheme of long time delay in LTE/LTE-A standard.
The UERS port that E-PDCCH uses can adopt default UERS port.Such as: E-PDCCH uses the open-loop transmission scheme based on single UERS port, and described single UERS port is UERS port 7.E-PDCCH uses the transmitting diversity transmission plan based on 2 UERS ports, and described 2 UERS ports are UERS port 7 and port 8.E-PDCCH uses the transmitting diversity transmission plan based on 2 UERS ports, and described 2 UERS ports are UERS port 7 and port 9.E-PDCCH uses the transmitting diversity transmission plan based on 4 UERS ports, and described 4 UERS ports are UERS port 7, port 8, port 9 and port one 0.
In the PRB of E-PDCCH transmission, all UERS port numbers of comprising transmit the UERS port number used for corresponding E-PDCCH.
The scramble sequence of the UERS that E-PDCCH uses is according to such as under type acquisition:
The initialization sequence of the scramble sequence of UERS only with parameter
relevant, wherein
for community ID or virtual subdistrict ID.
As, the scrambling sequence of UERS adopts the pseudo random sequence that in LTE/LTE-A system, UERS uses, and difference is that the initialization sequence of this pseudo random sequence is
wherein n
srepresent the time-gap number in a frame.Specifically by initialization sequence c
initthe method obtaining corresponding pseudo random sequence can adopt the method in LTE/LTE-A standard.
In LTE/LTE-A standard, network side can by sending the method notification terminal community ID carrying the synchronizing signal (comprising PSS and SSS) of cell ID information to terminal, end side can know community ID in the process receiving synchronizing signal.
In concrete enforcement, network side and end side also can adopt transmits virtual subdistrict id information with similar method in LTE/LTE-A system, and described virtual subdistrict ID is for transfer points different within the scope of same cells.
Shown in Figure 3, the method for the control channel transmission of the enhancing that the embodiment of the present invention realizes at network side comprises the following steps:
Step 301: network side sends the Master Information Block of PBCH transmission;
Step 302: the transmission plan used according to the E-PDCCH determined, carries out the transmission of E-PDCCH in search volume, meanwhile, sends and share UERS to support the demodulation of E-PDCCH in search volume within the scope of the running time-frequency resource that the E-PDCCH transmitted is identical.
The transmission plan that concrete E-PDCCH uses, and the various way of example of search volume are as described in said system, repeat no more here.
Shown in Figure 4, the method for the control channel transmission of the enhancing that the embodiment of the present invention realizes in end side comprises the following steps:
Step 401: terminal receives the Master Information Block of PBCH transmission;
Step 402: the transmission plan used according to the Physical Downlink Control Channel E-PDCCH of the enhancing determined adopts sharing users own reference signal UERS to carry out blind Detecting in search volume.
The transmission plan that concrete E-PDCCH uses, and the various way of example of search volume are as described in said system, repeat no more here.But no matter adopt which kind of embodiment above-mentioned, the transmission plan that network side uses with end side both sides E-PDCCH is consistent, thus guarantee that transmission can normally be carried out.
Shown in Figure 5, the device of the control channel transmission of the enhancing in network side realization that the embodiment of the present invention provides, this device comprises: transmitting element 51 and E-PDCCH transmission control unit 52.
Transmitting element 51, sends the Master Information Block of Physical Broadcast Channel PBCH transmission for the cycle;
E-PDCCH transmission control unit 52, for the transmission plan used according to the Physical Downlink Control Channel E-PDCCH of the enhancing determined, the transmission of E-PDCCH is carried out in search volume, meanwhile, send within the scope of the running time-frequency resource that the E-PDCCH transmitted in search volume is identical and share UERS to support the demodulation of E-PDCCH.
In search volume, there is the PRB inside of sharing UERS there is not the E-PDCCH carrying out demodulation based on user-specific UERS.
Comprise in described search volume for the DCI of common control information transmission or the DCI for user-specific transfer of data.
Described search volume is public search space.
The described DCI for common control information transmission comprises: the DCI of SI-RNTI, P-RNTI, RA-RNTI, TPC-PUSCH-RNTI or TPC-PUCCH-RNTI scrambling.
The described DCI for user-specific transfer of data comprises the DCI using C-RNTI, SPS-C-RNTI or interim C-RNTI scrambling.
Described E-PDCCH adopts the transmission plan preset.
The transmission plan that described E-PDCCH uses is the open-loop transmission scheme based on single UERS port, and data and UERS adopt identical precoding processing.As, suppose that transmitting terminal uses Nt root transmitting antenna, the pre-coding matrix that the E-PDCCH data-signal premultiplication being 1 by the number of plies on each Resource Unit within the scope of a PRB is tieed up with Nt × 1, reference signal on a UERS port within the scope of the PRB that E-PDCCH data-signal uses also carries out precoding processing identical with E-PDCCH data-signal, thus produces the signal to be sent on every root transmitting antenna.Because E-PDCCH data-signal and UERS have employed identical process, can estimate the equivalent channel that E-PDDCH data-signal transmits based on this UERS port at receiving terminal, thus ensure the reception of E-PDCCH.
The transmission plan that described E-PDCCH uses is the transmitting diversity transmission plan based on 2 or 4 UERS ports, and data carry out the corresponding precoding processing of transmitting diversity scheme, and UERS port does not carry out precoding processing.
When the transmission plan that described E-PDCCH uses is the transmitting diversity transmission plan based on 2 UERS ports, described transmitting diversity scheme comprises: space frequency block coding SFBC, or space-time block code STBC.As for SFBC, the layer of the transmitting diversity of 2 antenna ports in LTE/LTE-A standard can be adopted to hint obliquely at method complete and hint obliquely at the layer of E-PDCCH data-signal, then the precoding processing to E-PDCCH data-signal is completed according to the method for precoding of 2 antenna port transmitting diversity in LTE/LTE-A standard, and the reference signal on 2 UERS ports within the scope of the PRB used at E-PDCCH data-signal is not carried out any precoding processing and is placed on the corresponding Resource Unit of different antenna ports respectively, thus obtain the data-signal on 2 antenna ports.Because UERS does not carry out precoding processing, can estimate the space channel that E-PDDCH data-signal transmits based on this UERS port at receiving terminal, thus ensure the reception of E-PDCCH.
When the transmission plan that described E-PDCCH uses is the transmitting diversity transmission plan based on 4 UERS ports, described transmitting diversity scheme comprises: space frequency block coding SFBC association frequency domain switches the scheme of transmitting diversity FSTD.As, adopt the layer of the transmitting diversity of 4 antenna ports in LTE/LTE-A standard to hint obliquely at method to complete and hint obliquely at the layer of E-PDCCH data-signal, then the precoding processing to E-PDCCH data-signal is completed according to the method for precoding of 4 antenna port transmitting diversity in LTE/LTE-A standard, and the reference signal on 4 UERS ports within the scope of the PRB used at E-PDCCH data-signal is not carried out any precoding processing and is placed on the corresponding Resource Unit of different antenna ports respectively, thus obtain the data-signal on 4 antenna ports.Because UERS does not carry out precoding processing, can estimate the space channel that E-PDDCH data-signal transmits based on this UERS port at receiving terminal, thus ensure the reception of E-PDCCH.
Particularly, the transmission plan that E-PDCCH uses also can be the space division multiplexing transmission plan based on shared UERS, as adopted the open loop space division multiplexing scheme of long time delay in LTE/LTE-A standard.
E-PDCCH adopts the UERS port preset to transmit.
E-PDCCH transmission control unit according to obtain as under type E-PDCCH the scramble sequence of UERS that uses:
The initialization sequence of the scramble sequence of UERS only with parameter
relevant, wherein
for community ID or virtual subdistrict ID.
Scrambling sequence as: UERS adopt UERS in LTE/LTE-A system the pseudo random sequence that uses, difference is that the initialization sequence of this pseudo random sequence is
wherein n
srepresent the time-gap number in a frame.Specifically by initialization sequence c
initthe method obtaining corresponding pseudo random sequence can adopt the method in LTE/LTE-A standard.
E-PDCCH transmission control unit, can by sending the method notification terminal community ID of the synchronizing signal (comprising PSS and SSS) containing community ID or virtual subdistrict ID, and end side can know community ID in the process receiving synchronizing signal.In concrete enforcement, network side and end side also can adopt transmits virtual subdistrict id information with similar method in LTE/LTE-A system, and described virtual subdistrict ID is for transfer points different within the scope of same cells.
In the PRB of E-PDCCH transmission, all UERS port numbers of comprising transmit the UERS port number used for corresponding E-PDCCH.
Shown in Figure 6, the control channel transmitting device of the enhancing that the end side that the embodiment of the present invention provides realizes, comprising: receiving element 61 and detecting unit 62.Wherein,
Receiving element 61, for receiving the Master Information Block that Physical Broadcast Channel PBCH transmits;
Detecting unit 62, for receive Physical Broadcast Channel PBCH transmit Master Information Block after, the transmission plan used according to the Physical Downlink Control Channel E-PDCCH of the enhancing determined adopts sharing users own reference signal UERS to carry out blind Detecting in search volume.
In described search volume, there is the PRB inside of sharing UERS there is not the E-PDCCH carrying out demodulation based on user-specific UERS.
Comprise in described search volume for the DCI of common control information transmission or the DCI for user-specific transfer of data.Described search volume can be public search space.
The described DCI for common control information transmission comprises: the DCI of SI-RNTI, P-RNTI, RA-RNTI, TPC-PUSCH-RNTI or TPC-PUCCH-RNTI scrambling.
The described DCI for user-specific transfer of data comprises the DCI using C-RNTI, SPS-C-RNTI or interim C-RNTI scrambling.
Described E-PDCCH adopts the transmission plan preset.
The transmission plan that described E-PDCCH uses is the open-loop transmission scheme based on single UERS port, and data and UERS adopt identical precoding processing.
The transmission plan that described E-PDCCH uses is the transmitting diversity transmission plan based on 2 or 4 UERS ports, and data carry out the corresponding precoding processing of transmitting diversity scheme, and UERS port does not carry out precoding processing.As, suppose that transmitting terminal uses Nt root transmitting antenna, the pre-coding matrix that the E-PDCCH data-signal premultiplication being 1 by the number of plies on each Resource Unit within the scope of a PRB is tieed up with Nt × 1, reference signal on a UERS port within the scope of the PRB that E-PDCCH data-signal uses also carries out precoding processing identical with E-PDCCH data-signal, thus produces the signal to be sent on every root transmitting antenna.Because E-PDCCH data-signal and UERS have employed identical process, can estimate the equivalent channel that E-PDDCH data-signal transmits based on this UERS port at receiving terminal, thus ensure the reception of E-PDCCH.
When the transmission plan that described E-PDCCH uses is the transmitting diversity transmission plan based on 2 UERS ports, described transmitting diversity scheme comprises: space frequency block coding SFBC, or space-time block code STBC.As for SFBC, the layer of the transmitting diversity of 2 antenna ports in LTE/LTE-A standard can be adopted to hint obliquely at method complete and hint obliquely at the layer of E-PDCCH data-signal, then the precoding processing to E-PDCCH data-signal is completed according to the method for precoding of 2 antenna port transmitting diversity in LTE/LTE-A standard, and the reference signal on 2 UERS ports within the scope of the PRB used at E-PDCCH data-signal is not carried out any precoding processing and is placed on the corresponding Resource Unit of different antenna ports respectively, thus obtain the data-signal on 2 antenna ports.Because UERS does not carry out precoding processing, can estimate the space channel that E-PDDCH data-signal transmits based on this UERS port at receiving terminal, thus ensure the reception of E-PDCCH.
When the transmission plan that described E-PDCCH uses is the transmitting diversity transmission plan based on 4 UERS ports, described transmitting diversity scheme comprises: space frequency block coding SFBC association frequency domain switches transmitting diversity FSTD.As, adopt the layer of the transmitting diversity of 4 antenna ports in LTE/LTE-A standard to hint obliquely at method to complete and hint obliquely at the layer of E-PDCCH data-signal, then the precoding processing to E-PDCCH data-signal is completed according to the method for precoding of 4 antenna port transmitting diversity in LTE/LTE-A standard, and the reference signal on 4 UERS ports within the scope of the PRB used at E-PDCCH data-signal is not carried out any precoding processing and is placed on the corresponding Resource Unit of different antenna ports respectively, thus obtain the data-signal on 4 antenna ports.Because UERS does not carry out precoding processing, can estimate the space channel that E-PDDCH data-signal transmits based on this UERS port at receiving terminal, thus ensure the reception of E-PDCCH.
Particularly, the transmission plan that E-PDCCH uses also can be the space division multiplexing transmission plan based on shared UERS, as adopted the open loop space division multiplexing scheme of long time delay in LTE/LTE-A standard.
E-PDCCH adopts the UERS port preset to transmit.
Described detecting unit, for according to as under type acquisition E-PDCCH the scramble sequence of UERS that uses:
The initialization sequence of the scramble sequence of UERS only with parameter
relevant, wherein
for community ID or virtual subdistrict ID.
Scrambling sequence as: UERS adopt UERS in LTE/LTE-A system the pseudo random sequence that uses, difference is that the initialization sequence of this pseudo random sequence is
wherein n
srepresent the time-gap number in a frame.Specifically by initialization sequence c
initthe method obtaining corresponding pseudo random sequence can adopt the method in LTE/LTE-A standard.
Described detecting unit, for obtaining described community ID or virtual subdistrict ID in the receiving course of synchronizing signal.
In the PRB of E-PDCCH transmission, all UERS port numbers of comprising transmit the UERS port number used for corresponding E-PDCCH.
Method, the Apparatus and system of the control channel transmission of a kind of enhancing proposed in the present invention program, in the present invention program, according to the transmission plan that the Physical Downlink Control Channel (E-PDCCH) of the enhancing determined uses, the transmission of E-PDCCH is carried out in search volume, meanwhile, sharing users own reference signal (UERS) is sent within the scope of the running time-frequency resource that the E-PDCCH transmitted in search volume is identical to support the demodulation of E-PDCCH.Terminal is after the Master Information Block receiving PBCH transmission, the transmission plan used according to the E-PDCCH determined adopts shared UERS to carry out blind Detecting in search volume, make terminal can determine without the need to receiving legacy PDCCH in advance the transmission plan that the control channel strengthened uses when receiving the control channel strengthened, namely, ensure that terminal can determine the transmission plan that the down control channel strengthened uses and transmission plan relevant parameter after the MIB receiving PBCH transmission, thus realize by blind Detecting technology the transmission and the reception that do not rely on the DCI of legacy PDCCH.And do not allow to transmit the E-PDCCH carrying out demodulation based on user-specific UERS in the PRB that there is the E-PDCCH transmission sharing UERS.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (41)
1. a method for the control channel transmission strengthened, it is characterized in that, the method comprises the following steps:
Terminal is after the Master Information Block receiving Physical Broadcast Channel PBCH transmission, and the transmission plan used according to the Physical Downlink Control Channel E-PDCCH of the enhancing determined adopts sharing users own reference signal UERS to carry out blind Detecting in search volume;
Described E-PDCCH adopts the transmission plan preset;
The transmission plan that described E-PDCCH presets is the open-loop transmission scheme based on single UERS port, and data and UERS adopt identical precoding processing; Or the transmission plan that described E-PDCCH presets is the transmitting diversity transmission plan based on 2 or 4 UERS ports, and data carry out the corresponding precoding processing of transmitting diversity scheme, and UERS port does not carry out precoding processing.
2. method according to claim 1, is characterized in that, comprises for the Downlink Control Information DCI of common control information transmission or the DCI for user-specific transfer of data in described search volume.
3. method according to claim 1 and 2, is characterized in that, described search volume is public search space.
4. method according to claim 2, it is characterized in that, the described DCI for common control information transmission comprises: the DCI of system information radio network temporary identifier SI-RNTI, pager wireless net network temporary identifier P-RNTI, random access radio network temporary identifier RA-RNTI, transmission power control Physical Uplink Shared Channel radio network temporary identifier TPC-PUSCH-RNTI or transmission power control Physical Uplink Control Channel radio network temporary identifier TPC-PUCCH-RNTI scrambling.
5. method according to claim 2, it is characterized in that, the described DCI for user-specific transfer of data comprises the DCI using Cell Radio Network Temporary Identifier/Identity, Cell-RNTI symbol C-RNTI, semi-continuous scheduling radio network temporary identifier SPS-C-RNTI or interim C-RNTI scrambling.
6. method according to claim 1, it is characterized in that, when the transmission plan that described E-PDCCH uses is the transmitting diversity transmission plan based on 2 UERS ports, described transmitting diversity scheme comprises: space frequency block coding SFBC, or space-time block code STBC.
7. method according to claim 1, it is characterized in that, when the transmission plan that described E-PDCCH uses is the transmitting diversity transmission plan based on 4 UERS ports, described transmitting diversity scheme comprises: space frequency block coding SFBC association frequency domain switches transmitting diversity FSTD.
8. the method according to claim 1,6 or 7, is characterized in that, E-PDCCH adopts the UERS port preset to transmit.
9. method according to claim 1, is characterized in that, the scramble sequence of the UERS that E-PDCCH uses is according to such as under type acquisition:
The initialization sequence of the scramble sequence of UERS is only relevant with Parameter N VceIllD, and wherein NVceIlDl is cell identifier or virtual subdistrict identifier.
10. method according to claim 1, is characterized in that, in the PRB of E-PDCCH transmission, all UERS port numbers of comprising transmit the UERS port number used for corresponding E-PDCCH.
The method of 11. 1 kinds of control channel transmission strengthened, it is characterized in that, the method comprises the following steps:
The network side cycle sends the Master Information Block that Physical Broadcast Channel PBCH transmits, and according to the transmission plan that the Physical Downlink Control Channel E-PDCCH of the enhancing determined uses, the transmission of E-PDCCH is carried out in search volume, meanwhile, send within the scope of the running time-frequency resource that the E-PDCCH transmitted in search volume is identical and share UERS to support the demodulation of E-PDCCH;
Described E-PDCCH adopts the transmission plan preset;
The transmission plan that described E-PDCCH presets is the open-loop transmission scheme based on single UERS port, and data and UERS adopt identical precoding processing; Or the transmission plan that described E-PDCCH presets is the transmitting diversity transmission plan based on 2 or 4 UERS ports, and data carry out the corresponding precoding processing of transmitting diversity scheme, and UERS port does not carry out precoding processing.
12. methods according to claim 11, is characterized in that, comprise for the DCI of common control information transmission or the DCI for user-specific transfer of data in described search volume.
13. methods according to claim 11 or 12, it is characterized in that, described search volume is public search space.
14. methods according to claim 12, is characterized in that, the described DCI for common control information transmission comprises: the DCI of SI-RNTI, P-RNTI, RA-RNTI, TPC-PUSCH-RNTI or TPC-PUCCH-RNTI scrambling.
15. methods according to claim 12, is characterized in that, the described DCI for user-specific transfer of data comprises the DCI using C-RNTI, SPS-C-RNTI or interim C-RNTI scrambling.
16. methods according to claim 11, it is characterized in that, when the transmission plan that described E-PDCCH uses is the transmitting diversity transmission plan based on 2 UERS ports, described transmitting diversity scheme comprises: space frequency block coding SFBC, or space-time block code STBC.
17. methods according to claim 11, it is characterized in that, when the transmission plan that described E-PDCCH uses is the transmitting diversity transmission plan based on 4 UERS ports, described transmitting diversity scheme comprises: space frequency block coding SFBC association frequency domain switches transmitting diversity FSTD.
18. methods according to claim 11,16 or 17, is characterized in that, E-PDCCH adopts the UERS port preset to transmit.
19. methods according to claim 11, is characterized in that, the scramble sequence of the UERS that E-PDCCH uses is according to such as under type acquisition:
The initialization sequence of the scramble sequence of UERS only with parameter
relevant, wherein
for cell identifier or virtual subdistrict identifier.
20. methods according to claim 11, is characterized in that, in the PRB of E-PDCCH transmission, all UERS port numbers of comprising transmit the UERS port number used for corresponding E-PDCCH.
21. 1 kinds of control channel transmitting devices strengthened, is characterized in that, comprising:
Receiving element, for receiving the Master Information Block that Physical Broadcast Channel PBCH transmits;
Detecting unit, the transmission plan for using according to the Physical Downlink Control Channel E-PDCCH of the enhancing determined adopts sharing users own reference signal UERS to carry out blind Detecting in search volume;
Described E-PDCCH adopts the transmission plan preset;
The transmission plan that described E-PDCCH presets is the open-loop transmission scheme based on single UERS port, and data and UERS adopt identical precoding processing; Or the transmission plan that described E-PDCCH presets is the transmitting diversity transmission plan based on 2 or 4 UERS ports, and data carry out the corresponding precoding processing of transmitting diversity scheme, and UERS port does not carry out precoding processing.
22. devices according to claim 21, is characterized in that, comprise for the DCI of common control information transmission or the DCI for user-specific transfer of data in described search volume.
23. devices according to claim 21 or 22, it is characterized in that, described search volume is public search space.
24. devices according to claim 22, is characterized in that, the described DCI for common control information transmission comprises: the DCI of SI-RNTI, P-RNTI, RA-RNTI, TPC-PUSCH-RNTI or TPC-PUCCH-RNTI scrambling.
25. devices according to claim 22, is characterized in that, the described DCI for user-specific transfer of data comprises the DCI using C-RNTI, SPS-C-RNTI or interim C-RNTI scrambling.
26. devices according to claim 21, it is characterized in that, when the transmission plan that described E-PDCCH uses is the transmitting diversity transmission plan based on 2 UERS ports, described transmitting diversity scheme comprises: space frequency block coding SFBC, or space-time block code STBC.
27. devices according to claim 21, it is characterized in that, when the transmission plan that described E-PDCCH uses is the transmitting diversity transmission plan based on 4 UERS ports, described transmitting diversity scheme comprises: space frequency block coding SFBC association frequency domain switches transmitting diversity FSTD.
28. devices according to claim 21,26 or 27, is characterized in that, E-PDCCH adopts the UERS port preset to transmit.
29. devices according to claim 21, is characterized in that, described detecting unit, for according to as under type acquisition E-PDCCH the scramble sequence of UERS that uses:
The initialization sequence of the scramble sequence of UERS only with parameter
relevant, wherein
for cell identifier or virtual subdistrict identifier.
30. devices according to claim 21, is characterized in that, in the PRB of E-PDCCH transmission, all UERS port numbers of comprising transmit the UERS port number used for corresponding E-PDCCH.
The device of 31. 1 kinds of control channel transmission strengthened, it is characterized in that, this device comprises:
Transmitting element, sends the Master Information Block of Physical Broadcast Channel PBCH transmission for the cycle;
E-PDCCH transmission control unit, for the transmission plan used according to the Physical Downlink Control Channel E-PDCCH of the enhancing determined, the transmission of E-PDCCH is carried out in search volume, meanwhile, UERS is sent within the scope of the running time-frequency resource that the E-PDCCH transmitted in search volume is identical to support the demodulation of E-PDCCH;
Described E-PDCCH adopts the transmission plan preset;
The transmission plan that described E-PDCCH presets is the open-loop transmission scheme based on single UERS port, and data and UERS adopt identical precoding processing; Or the transmission plan that described E-PDCCH presets is the transmitting diversity transmission plan based on 2 or 4 UERS ports, and data carry out the corresponding precoding processing of transmitting diversity scheme, and UERS port does not carry out precoding processing.
32. devices according to claim 31, is characterized in that, comprise for the DCI of common control information transmission or the DCI for user-specific transfer of data in described search volume.
33. devices according to claim 31 or 32, it is characterized in that, described search volume is public search space.
34. devices according to claim 32, is characterized in that, the described DCI for common control information transmission comprises: the DCI of SI-RNTI, P-RNTI, RA-RNTI, TPC-PUSCH-RNTI or TPC-PUCCH-RNTI scrambling.
35. devices according to claim 32, is characterized in that, the described DCI for user-specific transfer of data comprises the DCI using C-RNTI, SPS-C-RNTI or interim C-RNTI scrambling.
36. want the device described in 31 according to right, it is characterized in that, when the transmission plan that described E-PDCCH uses is the transmitting diversity transmission plan based on 2 UERS ports, described transmitting diversity scheme comprises: space frequency block coding SFBC, or space-time block code STBC.
37. devices according to claim 31, it is characterized in that, when the transmission plan that described E-PDCCH uses is the transmitting diversity transmission plan based on 4 UERS ports, described transmitting diversity scheme comprises: space frequency block coding SFBC association frequency domain switches transmitting diversity FSTD.
38. devices according to claim 31,36 or 37, is characterized in that, E-PDCCH adopts the UERS port preset to transmit.
39. devices according to claim 31, is characterized in that, E-PDCCH transmission control unit according to obtain as under type E-PDCCH the scramble sequence of UERS that uses:
The initialization sequence of the scramble sequence of UERS is only relevant with Parameter N VceIllD, and wherein NVceIlDl is community ID or virtual subdistrict ID.
40. devices according to claim 31, is characterized in that, in the PRB of E-PDCCH transmission, all UERS port numbers of comprising transmit the UERS port number used for corresponding E-PDCCH.
The system of 41. 1 kinds of control channel transmission strengthened, it is characterized in that, this system comprises:
Terminal, for after the Master Information Block receiving Physical Broadcast Channel PBCH transmission, the transmission plan used according to the Physical Downlink Control Channel E-PDCCH of the enhancing determined adopts sharing users own reference signal UERS to carry out blind Detecting in search volume;
Base station, the Master Information Block of Physical Broadcast Channel PBCH transmission is sent for the cycle, and according to the transmission plan that the Physical Downlink Control Channel E-PDCCH of the enhancing determined uses, the transmission of E-PDCCH is carried out in search volume, meanwhile, UERS is sent within the scope of the running time-frequency resource that the E-PDCCH transmitted in search volume is identical to support the demodulation of E-PDCCH;
Described E-PDCCH adopts the transmission plan preset;
The transmission plan that described E-PDCCH presets is the open-loop transmission scheme based on single UERS port, and data and UERS adopt identical precoding processing; Or the transmission plan that described E-PDCCH presets is the transmitting diversity transmission plan based on 2 or 4 UERS ports, and data carry out the corresponding precoding processing of transmitting diversity scheme, and UERS port does not carry out precoding processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210074974.5A CN102624489B (en) | 2012-03-20 | 2012-03-20 | Enhanced control channel transmission method, device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210074974.5A CN102624489B (en) | 2012-03-20 | 2012-03-20 | Enhanced control channel transmission method, device and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102624489A CN102624489A (en) | 2012-08-01 |
| CN102624489B true CN102624489B (en) | 2015-05-27 |
Family
ID=46564183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210074974.5A Active CN102624489B (en) | 2012-03-20 | 2012-03-20 | Enhanced control channel transmission method, device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102624489B (en) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014032294A1 (en) * | 2012-08-31 | 2014-03-06 | 华为终端有限公司 | Method and device for allocating downlink control channel resources |
| WO2014045322A1 (en) | 2012-09-21 | 2014-03-27 | 富士通株式会社 | Wireless communication method, wireless communication system, wireless terminal, and wireless base station |
| KR20150067751A (en) * | 2012-10-08 | 2015-06-18 | 엘지전자 주식회사 | Method for transceiving control information, and apparatus for same |
| US9913261B2 (en) | 2012-10-18 | 2018-03-06 | Lg Electronics Inc. | Method and apparatus for receiving or transmitting downlink control signal in wireless communication system |
| CN104081846B (en) | 2012-10-30 | 2018-03-06 | 华为技术有限公司 | Strengthen processing method, network side equipment and the user equipment of Physical Downlink Control Channel |
| CN103959874B (en) * | 2012-10-31 | 2019-05-24 | 华为技术有限公司 | Configuration method, device, user equipment and the base station of scrambler sequence |
| CN103796314B (en) * | 2012-11-02 | 2018-10-26 | 中兴通讯股份有限公司 | Physical Resource Block configuration method, the system side of user equipment and its search space |
| GB2508593B (en) * | 2012-12-03 | 2020-08-26 | Sony Corp | Telecommunications apparatus and methods |
| US10206078B2 (en) | 2012-12-03 | 2019-02-12 | Sony Corporation | Group based PDCCH capability for LTE |
| GB2508595B (en) * | 2012-12-03 | 2020-08-26 | Sony Corp | Telecommunications apparatus and methods |
| CN104904297A (en) | 2013-01-11 | 2015-09-09 | 联发科技（新加坡）私人有限公司 | Method and apparatus of obtaining scheduling information of a data channel |
| WO2014107880A1 (en) | 2013-01-11 | 2014-07-17 | 华为技术有限公司 | Method and device for transmitting scheduling signaling |
| WO2014110804A1 (en) * | 2013-01-18 | 2014-07-24 | Broadcom Corporation | Enhanced broadcast channel for low cost machine type communication with coverage enhancement |
| CN109547081B (en) * | 2013-04-19 | 2022-04-19 | 中兴通讯股份有限公司 | Method and device for sending and receiving synchronous signal and processing system of synchronous signal |
| CN104185197A (en) * | 2013-05-27 | 2014-12-03 | 华为技术有限公司 | Method for transmitting DCI and apparatuses thereof |
| CN104768178B (en) * | 2014-01-03 | 2018-09-14 | 普天信息技术有限公司 | The method and system that heartbeat is sent |
| KR102134877B1 (en) | 2014-10-30 | 2020-08-26 | 엘지전자 주식회사 | Pucch transmission method by mtc device |
| US20170353272A1 (en) * | 2014-11-06 | 2017-12-07 | Ntt Docomo, Inc. | User terminal, radio base station and radio communication method |
| US9872286B2 (en) | 2014-11-21 | 2018-01-16 | Apple Inc. | Compressed system information for link budget limited UEs in a radio access network |
| US11382080B2 (en) | 2015-01-09 | 2022-07-05 | Apple Inc. | System information signaling for link budget limited wireless devices |
| US10492047B2 (en) * | 2015-01-28 | 2019-11-26 | Sharp Kabushiki Kaisha | Terminal device, base station device, and method |
| CN105992350B (en) * | 2015-01-30 | 2019-04-09 | 上海诺基亚贝尔股份有限公司 | For distributing the method for being used for the CSS subband of low complex degree machine type communication |
| WO2016161651A1 (en) * | 2015-04-10 | 2016-10-13 | Nokia Technologies Oy | Epdcch search space determination |
| US10091775B2 (en) | 2015-08-18 | 2018-10-02 | Apple Inc. | Non-PDCCH signaling of SIB resource assignment |
| CN108418646B (en) * | 2017-02-10 | 2020-01-07 | 维沃移动通信有限公司 | Sending method, receiving method, related equipment and system of synchronous access signal group |
| MX2020002578A (en) * | 2017-09-11 | 2020-07-20 | Ntt Docomo Inc | User equipment and wireless communication method. |
| JP7237097B2 (en) * | 2018-06-12 | 2023-03-10 | 北京小米移動軟件有限公司 | Method and apparatus, base station and user equipment for transmitting MTC downlink control information |
| WO2024036604A1 (en) * | 2022-08-19 | 2024-02-22 | Lenovo (Beijing) Limited | Methods and apparatuses for transform precoding on a pusch |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102083096A (en) * | 2010-03-22 | 2011-06-01 | 大唐移动通信设备有限公司 | Control signaling sending and signaling detecting method, system and device on return link |
| CN102231913A (en) * | 2011-06-17 | 2011-11-02 | 电信科学技术研究院 | Method, system and device for allocating and identifying physical downlink control channel (PDCCH) |
-
2012
- 2012-03-20 CN CN201210074974.5A patent/CN102624489B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102083096A (en) * | 2010-03-22 | 2011-06-01 | 大唐移动通信设备有限公司 | Control signaling sending and signaling detecting method, system and device on return link |
| CN102231913A (en) * | 2011-06-17 | 2011-11-02 | 电信科学技术研究院 | Method, system and device for allocating and identifying physical downlink control channel (PDCCH) |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102624489A (en) | 2012-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102624489B (en) | Enhanced control channel transmission method, device and system | |
| US11452094B2 (en) | Time-division duplex frame structure for narrowband communications | |
| CN110301112B (en) | Method and apparatus for wireless communication | |
| CN109937552B (en) | Sequence generation method and apparatus for system supporting hybrid digital scheme | |
| CN109906580B (en) | Demodulation reference signal with low peak-to-average power ratio and allocation information with granularity | |
| US11095411B2 (en) | Demodulation reference signal design for vehicle-to-vehicle communication | |
| CN110574298B (en) | Configurable intra-slot hopping for variable length uplink control channels | |
| EP3665830B1 (en) | Methods and apparatus related to demodulation reference signal design and related signaling | |
| CN108886451B (en) | Wireless communication method, equipment and computer readable storage medium | |
| WO2017073083A1 (en) | Systems and methods for multi-physical structure system | |
| CN104798400A (en) | Method and user equipment for receiving signal and method and base station for transmitting signal | |
| CN110192375A (en) | Reference signal in the different sub-band of identical OFDM symbol is placed | |
| CN109891766A (en) | DCI for multi-user's superposed transmission is designed | |
| WO2017073084A1 (en) | Systems and methods for multi-physical structure system | |
| WO2022150178A1 (en) | Master information block and download control information design for higher bands | |
| EP4078864A1 (en) | Methods and apparatus for sequence design based on subsampling | |
| WO2017073085A1 (en) | Systems and methods for multi-physical structure system |
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 | ||
| 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 |