CN102594513A - Enhanced downlink control signal channel transmission method and device - Google Patents
Enhanced downlink control signal channel transmission method and device Download PDFInfo
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- CN102594513A CN102594513A CN2012100746802A CN201210074680A CN102594513A CN 102594513 A CN102594513 A CN 102594513A CN 2012100746802 A CN2012100746802 A CN 2012100746802A CN 201210074680 A CN201210074680 A CN 201210074680A CN 102594513 A CN102594513 A CN 102594513A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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Abstract
The invention discloses an enhanced downlink control signal channel transmission method and an enhanced downlink control signal channel transmission device and relates to the communication technology. Time frequency resources are distributed for E-physical downlink control channel (E-PDCCH) according to the preset search space in a preset time frequency resource range in sub frames, so a terminal can obtain the time frequency resources capable of being used by E-PDCCH after receiving a management information base (MIB) transmitted by a physical broadcast channel (PBCH), further, the blind detection can be carried out on the corresponding time domain resources, and digital copyright identifiers (DCI) can be received on the E-PDCCH.
Description
Technical field
The present invention relates to the communication technology, relate in particular to a kind of transmission method and device of down control channel of enhancing.
Background technology
Long Term Evolution (long term evolution, LTE) in the system, Physical Downlink Control Channel (physical downlink control channel; PDCCH) in each wireless sub-frame, send, and (physical downlink shared channel PDSCH) forms time division multiplexing (time division multiplexing with Physical Downlink Shared Channel; TDM) multiplexing relation; As shown in Figure 1, the control area is used to transmit PDCCH, and the data area is used to transmit PDSCH.PDCCH is through top n OFDM (the orthogonal frequency division multiplexing of a descending sub frame; OFDM) symbol sends; Wherein the value of N can be 1,2,3 or 4, and N=4 only allows to appear in the system that system bandwidth is 1.4MHz.
The terminal receives master sync signal, and (primary synchronous signal, PSS) (secondary synchronous signal can accomplish cell initial search, acquisition down-going synchronous and cell ID (cell ID) after SSS) with auxiliary synchronous signals.Receive Physical Broadcast Channel (physical broadcast channel on the center 1.4MHz frequency range in system bandwidth; PB CH) Master Information Block that is transmitted on (master information block; MIB) information; Thereby the automatic repeat requests of reading system bandwidth, System Frame Number and physical mixed (automatic repeat request, ARQ) indicating channel (physical hybrid ARQ indictor channel, PHICH) configuration.Can confirm Physical Control Format Indicator Channel (physical control format indicator channel based on system bandwidth and sub-district ID; PCFICH) frequency domain resource position; Thereby receive control format indication (control format indicator; CFI) confirm the shared OFDM of PDCCH (orthogonal frequency divided multiplexing, OFDM) symbolic number, thereby definite employed running time-frequency resource of PDCCH.Through the concrete running time-frequency resource position of each PDCCH channel of blind Detecting completion, thereby realize that PDCCH receives, (system information, SI) the contour level signaling scheduling information reads with corresponding information and receives to accomplish system information.
The control area of transmitting PDCCH in the LTE system is that (control channel element CCE) constitutes, and wherein (resource element, the mode that interweaves has fully been adopted in mapping RE) to CCE to Resource Unit by the control channel unit of logical partitioning.It is unit that the transmission of DCI also is based on CCE; To a subscriber equipment (user equipment; UE) a DCI can send in N continuous CCE, and the possible value of N is 1,2,4 or 8 in the LTE system, is called CCE polymerization grade (aggregation level).
UE carries out the PDCCH blind Detecting in the control area; Whether search exists the PDCCH to its transmission, and wherein, blind check is specially: wireless network temporary indentification (the radio network temporary identifier that uses this UE; RNTI) to the trial of decoding of different DCI forms and CCE polymerization grade; If decoding is correct, then confirms it is DCI, and receive to this UE.In the LTE system, (discontinuous reception, DRX) descending sub frame of each in the state all need carry out blind Detecting to its control area to UE, search PDCCH in discontinuous reception.
In order to reach expansion capacity, frequency domain interference and coordinate, obtain targets such as many antenna gains, and LTE version 11 (Release 11, R11) will carry out the DCI transmission in the PDSCH zone, that is, the PDCCH of enhancing (enhanced PDCCH, E-PDCCH).A solution is: send the PDCCH that strengthens in the PDSCH territory when keeping original PDCCH territory in descending sub frame.
As shown in Figure 2, original PDCCH still adopts existing transmission and reception technique in the territory, uses original PDCCH resource, and this part PDCCH territory is called legacy PDCCH (original PDCCH) territory.More advanced transmission and reception technique can be used in the PDCCH territory that strengthens; As adopt precoding when sending, (UE-specific reference signal UERS) detects based on the user-specific reference signal during reception; The running time-frequency resource that takies beyond the legacy PDCCH territory sends; Use the part resource of original PDSCH, realize multiplexingly with the mode of PDSCH through frequency division, this part PDCCH territory is called the E-PDCCH territory.(frequency divided multiplexing, FDM) mode realizes that multiplexing scheme is called FDM E-PDCCH through frequency division multiplexing for this E-PDCCH and PDSCH.
Exist at the same time under the situation in legacy PDCCH territory and E-PDCCH territory; If the terminal possesses the ability that receives PDCCH and E-PDCCH simultaneously; Then the scheduling of the system information high-level signaling information relevant be can accomplish, thereby transmission and the reception of E-PDCCH guaranteed through PDCCH with the E-PDCCH configuration.This type of E-PDCCH is called the E-PDCCH that relies on legacy PDCCH.
On the one hand; Along with Machine Type communication (machine type communication; MTC) fast development of business; Increasing limitation of traditional sensors network faces and challenge are badly in need of sensor network and mobile communications network are combined, and the performance mobile communication covers characteristics such as wide, that reliability is high, transmission delay is little.In order to satisfy the professional demand of MTC; The follow-up evolution system of LTE will be considered system and transmission technology are optimized, with adapt to the MTC terminal support radio frequency band still less, littler bandwidth processing ability, simpler many antenna processing ability, more flexibly throughput capabilities and buffer memory ability, simpler mobility, only support characteristics such as PS territory.
The terminal of limited bandwidth can't receive the PDCCH that full bandwidth sends, and can't receive the DCI by transmission on the legacy PDCCH, therefore can't receive system information and high-level signaling information by legacy PDCCH scheduling.Obviously, the E-PDCCH technology that relies on legacy PDCCH can't realize the support to limited bandwidth MTC terminal.
On the other hand; In order to improve spectrum utilization efficiency and to guarantee that the hot spot region covers; Consider that non-backward compatible carrier waves improves in spectrum efficiency, the unique advantage of aspects such as the interference inhibition under the heterogeneous network, energy-efficient, will further be studied in LTE-Advanced Release-11 (the LTE evolution version 11) stage about the new application scenarios and the detailed design scheme of non-backward compatible carrier waves.The expansion carrier wave is a kind of carrier wave of non-backward compatible, on the expansion carrier wave, does not have legacy PDCCH.The E-PDCCH technology that relies on legacy PDCCH also can't be supported this type of carrier wave to be independent of other carrier waves to carry out work.
Summary of the invention
The embodiment of the invention provides a kind of down control channel transmission method and device of enhancing, does not receive E-PDCCH so that the terminal does not rely on legacy PDCCH.
A kind of transmission method of down control channel of enhancing comprises:
E-PDCCH is confirmed to receive in the terminal;
Blind Detecting is carried out to receive E-PDCCH by preset search volume in the terminal in the E-PDCCH running time-frequency resource scope of confirming.
A kind of transmission method of down control channel of enhancing comprises:
When the down control channel E-PDCCH that needs send to strengthen, in subframe, be that said E-PDCCH distributes running time-frequency resource by preset search volume in the predefined running time-frequency resource scope;
Send said E-PDCCH to the terminal.
A kind of transmitting device of down control channel of enhancing comprises:
Confirm the unit, be used for confirming to receive E-PDCCH;
Receiving element is used in the E-PDCCH running time-frequency resource scope of confirming, carrying out blind Detecting to receive E-PDCCH by preset search volume.
A kind of transmitting device of down control channel of enhancing comprises:
Resource allocation unit is used for when the down control channel E-PDCCH that needs send to strengthen, and in subframe, is that said E-PDCCH distributes running time-frequency resource by preset search volume in the predefined running time-frequency resource scope;
Transmitting element is used for sending said E-PDCCH to the terminal.
The embodiment of the invention provides a kind of down control channel transmission method and device of enhancing; Through being that E-PDCCH distributes running time-frequency resource by preset search volume in the predefined running time-frequency resource scope in subframe; Make the terminal can know that after receiving the MIB of PBCH transmission E-PDCCH can employable running time-frequency resource; Thereby can on corresponding running time-frequency resource, carry out blind Detecting, so that on E-PDCCH, receive DCI.
Description of drawings
Fig. 1 is the multiplexing sketch map that concerns of control area and data area in the descending sub frame in the prior art;
Fig. 2 is the PDCCH structural representation of a kind of enhancing in the prior art;
One of down control channel transmission method flow chart of the enhancing that Fig. 3 provides for the embodiment of the invention;
Two of the down control channel transmission method flow chart of the enhancing that Fig. 4 provides for the embodiment of the invention;
One of down control channel transmitting device structural representation of the enhancing that Fig. 5 provides for the embodiment of the invention;
Two of the down control channel transmitting device structural representation of the enhancing that Fig. 6 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of down control channel transmission method and device of enhancing; Through being that E-PDCCH distributes running time-frequency resource by preset search volume in the predefined running time-frequency resource scope in subframe; Make the terminal can know that after receiving the MIB of PBCH transmission E-PDCCH can employable running time-frequency resource; Thereby can on corresponding running time-frequency resource, carry out blind Detecting, so that on E-PDCCH, receive DCI.As shown in Figure 3, the transmission method of the down control channel of the enhancing that the embodiment of the invention provides comprises:
E-PDCCH is confirmed to receive in step S301, terminal;
Blind Detecting is carried out to receive E-PDCCH by preset search volume in step S302, terminal in the E-PDCCH running time-frequency resource scope of confirming.
Owing to use the running time-frequency resource in the setting range to transmit E-PDCCH; So the terminal can be under the situation that does not receive legacy PDCCH; In the E-PDCCH running time-frequency resource scope of confirming, carry out blind Detecting, thereby realize the reception of E-PDCCH by preset search volume.
In step S301, the terminal is confirmed to receive E-PDCCH, specifically comprises:
The terminal indicates E-PDCCH information configured territory to confirm to receive E-PDCCH according to being used to of receiving, and wherein, information field is used for indicating terminal E-PDCCH transmission means for not relying on the E-PDCCH transmission of legacy PDCCH.Wherein, this is used for indicating the down control channel E-PDCCH information configured territory of enhancing can be arranged on the MIB by the PBCH transmission.
Information field is generally 1 bit information, and for example, 0 expression system does not support not rely on the E-PDCCH transmission of legacy PDCCH, and the support of 1 expression system does not rely on the E-PDCCH transmission of legacy PDCCH.
When system did not support not rely on the E-PDCCH transmission of legacy PDCCH, the reception of E-PDCCH was not carried out at the terminal; When system's support did not rely on the E-PDCCH transmission of legacy PDCCH, the reception of E-PDCCH can be carried out according to the E-PDCCH transmission method that the embodiment of the invention provides in the terminal that possesses the E-PDCCH receiving ability.
In the embodiment of the invention, preset search volume can be the common search space, also can arrange the search volume according to actual conditions.
Concrete, from the time domain scope, the E-PDCCH time-domain resource scope of confirming can be the L1 in the subframe～L2 OFDM symbol, wherein:
L1 can be predefined fixed value, and for example, the L1 value can be set at 4, at this moment, the initial OFDM symbol number of E-PDCCH l=3, l is from 0 open numbering.
L1 also can set according to system bandwidth; For example, when the PRB number that comprises when system bandwidth was less than or equal to 10, the L1 value was 5; The initial OFDM symbol number of E-PDCCH this moment l=4; When the PRB number that comprises in the system bandwidth during greater than 10, the L1 value is 4, the initial OFDM symbol number of E-PDCCH this moment l=3.
L2 is generally predefined fixed value; For example, (cyclic prefix is in common subframe CP) in the regular circulation prefix; The L2 value can be set at 7; Expression E-PDCCH is in preceding 1 slot transmission of a sub-frame, and the L2 value also can be set at 14, and expression E-PDCCH transmits in 2 time slots of a sub-frame; In the common subframe of expansion CP, the L2 value can be set at 6, and expression E-PDCCH is in preceding 1 slot transmission of a sub-frame, and the L2 value also can be set at 12, and expression E-PDCCH transmits in 2 time slots of a sub-frame; In special subframe, L2 depends on the OFDM symbolic number that DwPTS comprises, and (downlink pilot time slot, terminating symbol DwPTS) is for finishing with descending pilot frequency time slot for E-PDCCH time domain scope.
The terminal receives at needs and adopts system information Radio Network Temporary Identifier symbol (system information-radio network temporary identity; SI-RNTI) scrambling is used for dispatching patcher type of information block 1 (system information block1; During SIB1) E-PDCCH, can further in predefined subframe, carry out blind Detecting and reception.For example, can be set in the transmission of carrying out this E-PDCCH in the subframe 5 of even number radio frames, and transmission first is set in the radio frames of SFN mod 8=0, wherein SFN is a System Frame Number, can obtain through receiving the mib information that PBCH transmitted.
Further; From the frequency domain scope; The E-PDCCH frequency domain resource scope of confirming can for: the M that makes an appointment in a subframe PRB, M are fixed value of making an appointment or the value of being indicated by enhanced physical control format indicating channel E-PCFICH, and the M value is from [3; 6] value is preferable in, and it is 4 that the M value can be set usually.
Further, the M that an is made an appointment PRB can be dispersed on frequency domain in the whole system bandwidth range, and this kind design is directed to the situation that system does not support the terminal of radio frequency band still less, littler bandwidth processing ability; The M that an is made an appointment PRB can also be dispersed on frequency domain and compare in the less bandwidth range of system bandwidth; This bandwidth range depends on that system allows has a minimum bandwidth disposal ability, and this kind design is to the situation at the terminal of still less radio frequency band of system's support, littler bandwidth processing ability.
Usually; The M that a makes an appointment PRB begins the position of the 1st PRB and is confirmed by cell identifier from low frequency; Perhaps confirm, perhaps confirm, perhaps confirm by virtual subdistrict identifier and subframe numbering by cell identifier and subframe numbering by the virtual subdistrict identifier; Wherein, cell identifier or virtual subdistrict identifier can obtain through receiving synchronizing signal.
The M that a makes an appointment PRB can be continuous; The frequency domain interval that setting also can be arranged; Concrete; Frequency domain interval that should be fixing can be confirmed according to bandwidth; For example; Fixing frequency domain interval is
wherein; The maximum that
supports for PRB number that system bandwidth comprised or terminal receives bandwidth;
expression is not more than the maximum integer of x; The maximum integer of frequency domain interval can be set to
expression is not more than x that perhaps should be fixing, at this moment, if M is more than or equal to 4; Should fixing frequency domain interval be 1 then, each PRB essence be continuous.
Further, the Resource Unit that does not transmit E-PDCCH can also be determined in the terminal in E-PDCCH running time-frequency resource scope, concrete:
The terminal confirms in the E-PDCCH running time-frequency resource scope, and public reference signal (common reference signal, CRS) shared Resource Unit is not used in the E-PDCCH transmission, and the port number of CRS is consistent with the employed CRS port number of PBCH;
The terminal can also be confirmed in the E-PDCCH running time-frequency resource scope; User-specific reference signal (UE-specific reference signal; UERS) shared Resource Unit is not used in the E-PDCCH transmission, and the port number of UERS is consistent with the employed UERS port number of E-PDCCH;
The terminal can further be confirmed in the E-PDCCH running time-frequency resource scope; (channel state information reference signal, CSI-RS) zero energy and the shared Resource Unit of non-zero power CSI-RS are not used in the E-PDCCH transmission to channel state information reference signals under the maximum configured set.Perhaps, zero energy or the shared Resource Unit of non-zero power CSI-RS can be confirmed not exist in the E-PDCCH running time-frequency resource scope in the terminal.
The embodiment of the invention also provides a kind of transmission method of down control channel of enhancing of network side, and is as shown in Figure 4, comprising:
Step S401, when the down control channel E-PDCCH that needs send to strengthen, in subframe, be that E-PDCCH distributes running time-frequency resource by preset search volume in the predefined running time-frequency resource scope;
Step S402, send E-PDCCH to the terminal.
Further, can send the down control channel E-PDCCH information configured territory that is used to indicate enhancing to the terminal, this information field is used for indicating terminal E-PDCCH transmission means for not relying on the E-PDCCH transmission of legacy PDCCH.Thereby be convenient to the E-PDCCH transmission whether the terminal recognition system supports not rely on legacy PDCCH, when system did not support not rely on the E-PDCCH transmission of legacy PDCCH, the reception of E-PDCCH was not carried out at the terminal; When system's support did not rely on the E-PDCCH transmission of legacy PDCCH, the reception of E-PDCCH can be carried out according to the E-PDCCH transmission method that the embodiment of the invention provides in the terminal that possesses the E-PDCCH receiving ability.
This MIB that is used for indicating the down control channel E-PDCCH information configured territory of enhancing can be arranged on by the PBCH transmission sends.
Concrete, from the time domain scope, predefined E-PDCCH time-domain resource scope is: the L1 in the subframe～L2 OFDM symbol, wherein:
L1 can be predefined fixed value, and for example, the L1 value can be set at 4, at this moment, the initial OFDM symbol number of E-PDCCH l=3, l is from 0 open numbering.
L1 also can set according to system bandwidth; For example, when the PRB number that comprises when system bandwidth was less than or equal to 10, the L1 value was 5; The initial OFDM symbol number of E-PDCCH this moment l=4; When the PRB number that comprises in the system bandwidth during greater than 10, the L1 value is 4, the initial OFDM symbol number of E-PDCCH this moment l=3.
L2 is generally predefined fixed value; For example, (cyclic prefix is in common subframe CP) in the regular circulation prefix; The L2 value can be set at 7; Expression E-PDCCH is in preceding 1 slot transmission of a sub-frame, and the L2 value also can be set at 14, and expression E-PDCCH transmits in 2 time slots of a sub-frame; In the common subframe of expansion CP, the L2 value can be set at 6, and expression E-PDCCH is in preceding 1 slot transmission of a sub-frame, and the L2 value also can be set at 12, and expression E-PDCCH transmits in 2 time slots of a sub-frame; In special subframe, L2 depends on the OFDM symbolic number that DwPTS comprises, and (Downlink Pilot Time Slot, terminating symbol DwPTS) is for finishing with descending pilot frequency time slot for E-PDCCH time domain scope.
Transmission adopt the SI-RNTI scrambling be used to dispatch the E-PDCCH of SIB1 the time; Can distribute the running time-frequency resource of predefined subframe for the E-PDCCH that is used for dispatching SIB1 that adopts the SI-RNTI scrambling, thereby make the terminal carry out blind Detecting and the reception of such E-PDCCH in can predefined again subframe.
Further; From the frequency domain scope; Predefined E-PDCCH frequency domain resource scope can for: the M that makes an appointment in a subframe PRB, M are the fixed value of making an appointment or by the value of enhanced physical control format indicating channel E-PCFICH indication, the M value is from [3; 6] value is preferable in, and it is 4 that the M value can be set usually.
Further, the M that an is made an appointment PRB can be dispersed on frequency domain in the whole system bandwidth range, and this kind design is directed to the situation that system does not support the terminal of radio frequency band still less, littler bandwidth processing ability; The M that an is made an appointment PRB can also be dispersed on frequency domain and compare in the less bandwidth range of system bandwidth; This bandwidth range depends on that system allows has a minimum bandwidth disposal ability, and this kind design is to the situation at the terminal of still less radio frequency band of system's support, littler bandwidth processing ability.
Usually; The M that a makes an appointment PRB begins the position of the 1st PRB and is confirmed by cell identifier from low frequency; Perhaps confirm, perhaps confirm, perhaps confirm by virtual subdistrict identifier and subframe numbering by cell identifier and subframe numbering by the virtual subdistrict identifier; Wherein, cell identifier or virtual subdistrict identifier can obtain through receiving synchronizing signal.
The M that a makes an appointment PRB can be continuous; The frequency domain interval that setting also can be arranged; Concrete; Frequency domain interval that should be fixing can be confirmed according to bandwidth; For example; Fixing frequency domain interval is
wherein; The maximum that
supports for PRB number that system bandwidth comprised or terminal receives bandwidth;
expression is not more than the maximum integer of x; The maximum integer of frequency domain interval can be set to
expression is not more than x that perhaps should be fixing, at this moment, if M is more than or equal to 4; Should fixing frequency domain interval be 1 then, each PRB essence be continuous.
Further, in E-PDCCH running time-frequency resource scope, determine the Resource Unit that does not transmit E-PDCCH for ease of the terminal, one or more in can be as follows distribute running time-frequency resources:
In the E-PDCCH running time-frequency resource scope, the shared Resource Unit of CRS is not used in the E-PDCCH transmission, and the port number of CRS is consistent with the employed CRS port number of PBCH;
In the E-PDCCH running time-frequency resource scope, the shared Resource Unit of UERS is not used in the E-PDCCH transmission, and the port number of UERS is consistent with the employed UERS port number of E-PDCCH;
In the E-PDCCH running time-frequency resource scope, zero energy and the shared Resource Unit of non-zero power CSI-RS are not used in the E-PDCCH transmission under the set of CSI-RS maximum configured.Perhaps do not send zero energy or non-zero power CSI-RS in the E-PDCCH running time-frequency resource scope.
The also corresponding transmitting device that a kind of down control channel of enhancing is provided of the embodiment of the invention, this device can be specially user terminal, and is as shown in Figure 5, and this device comprises:
Receiving element 502 is used in the E-PDCCH running time-frequency resource scope of confirming, carrying out blind Detecting to receive E-PDCCH by preset search volume.
Wherein, confirm that unit 501 specifically is used for:
According to the definite E-PDCCH of reception in down control channel E-PDCCH information configured territory that is used to indicate enhancing that receives, information field is used for indicating terminal E-PDCCH transmission means for not relying on the E-PDCCH transmission of legacy PDCCH.Wherein, this is used for indicating the down control channel E-PDCCH information configured territory of enhancing can be arranged on the MIB by the PBCH transmission.
Concrete, the E-PDCCH time-domain resource scope of confirming is: the L1 in the subframe～L2 OFDM symbol, wherein:
L1 is predefined fixed value, and perhaps L1 is the value of setting according to system bandwidth;
L2 is predefined fixed value.
Receiving element 502 also is used for:
In predefined subframe, receive the E-PDCCH that is used for dispatching patcher type of information block 1SIB1 that adopts system information Radio Network Temporary Identifier symbol SI-RNTI scrambling.
Concrete, the E-PDCCH frequency domain resource scope of confirming is: the M that makes an appointment in a subframe PRB, M are fixed value of making an appointment or the value of being indicated by enhanced physical control format indicating channel E-PCFICH.
Receiving element 502 also is used for:
Confirm in the E-PDCCH running time-frequency resource scope that the shared Resource Unit of public reference signal CRS is not used in the E-PDCCH transmission, and the port number of CRS is consistent with the employed CRS port number of PBCH.
Receiving element 502 also is used for:
Confirm in the E-PDCCH running time-frequency resource scope that the shared Resource Unit of user-specific reference signal UERS is not used in the E-PDCCH transmission, and the port number of UERS is consistent with the employed UERS port number of E-PDCCH.
Receiving element 502 also is used for:
Confirm in the E-PDCCH running time-frequency resource scope that zero energy and the shared Resource Unit of non-zero power CSI-RS are not used in the E-PDCCH transmission under the set of channel state information reference signals CSI-RS maximum configured.
Receiving element 502 also is used for:
Confirm not exist in the E-PDCCH running time-frequency resource scope the shared Resource Unit of CSI-RS.
The embodiment of the invention provides a kind of transmitting device of down control channel of enhancing, and this device can be network equipments such as base station, and is as shown in Figure 6, and this device comprises:
Transmitting element 602 is used for sending E-PDCCH to the terminal.
Wherein, transmitting element 602 also is used for:
Send the down control channel E-PDCCH information configured territory that is used to indicate enhancing to the terminal, information field is used for indicating terminal E-PDCCH transmission means for not relying on the E-PDCCH transmission of legacy PDCCH.Wherein, be used for indicating the down control channel E-PDCCH information configured territory of enhancing can be arranged on MIB by the PBCH transmission.
Concrete, predefined E-PDCCH time-domain resource scope is: the L1 in the subframe～L2 OFDM symbol, wherein:
L1 is predefined fixed value, and perhaps L1 is the value of setting according to system bandwidth;
L2 is predefined fixed value.
For the E-PDCCH that is used for dispatching patcher type of information block 1SIB1 that adopts system information Radio Network Temporary Identifier symbol SI-RNTI scrambling distributes the running time-frequency resource of predefined subframe.
Predefined E-PDCCH frequency domain resource scope is: the M that makes an appointment in a subframe PRB, M are fixed value of making an appointment or the value of being indicated by enhanced physical control format indicating channel E-PCFICH.
Confirm in the E-PDCCH running time-frequency resource scope that the shared Resource Unit of public reference signal CRS is not used in the E-PDCCH transmission, and the port number of CRS is consistent with the employed CRS port number of PBCH.
Confirm in the E-PDCCH running time-frequency resource scope that the shared Resource Unit of user-specific reference signal UERS is not used in the E-PDCCH transmission, and the port number of UERS is consistent with the employed UERS port number of E-PDCCH.
Confirm in the E-PDCCH running time-frequency resource scope that zero energy and the shared Resource Unit of non-zero power CSI-RS are not used in the E-PDCCH transmission under the set of channel state information reference signals CSI-RS maximum configured.
Confirm not send in the E-PDCCH running time-frequency resource scope CSI-RS of zero energy and non-zero power.
The embodiment of the invention provides a kind of down control channel transmission method and device of enhancing; Through being that E-PDCCH distributes running time-frequency resource by preset search volume in the predefined running time-frequency resource scope in subframe; Make the terminal can know that after receiving the MIB of PBCH transmission E-PDCCH can employable running time-frequency resource; Thereby can on corresponding running time-frequency resource, carry out blind Detecting, so that on E-PDCCH, receive DCI.Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of the embodiment of complete hardware embodiment, complete software implementation example or combination software and hardware aspect.And the present invention can be employed in the form that one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code go up the computer program of implementing.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out through the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in ability vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work; Make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device; Make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of on computer or other programmable devices, carrying out is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic inventive concept could of cicada, then can make other change and modification to these embodiment.So accompanying claims is intended to be interpreted as all changes and the modification that comprises preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (45)
1. the transmission method of the down control channel of an enhancing is characterized in that, comprising:
E-PDCCH is confirmed to receive in the terminal;
Blind Detecting is carried out to receive E-PDCCH by preset search volume in the terminal in the E-PDCCH running time-frequency resource scope of confirming.
2. the method for claim 1 is characterized in that, said terminal is confirmed to receive E-PDCCH, specifically comprises:
The terminal is according to the definite E-PDCCH of reception in down control channel E-PDCCH information configured territory that is used to indicate enhancing that receives, and said information field is used for the said E-PDCCH transmission means of indicating terminal for not relying on the E-PDCCH transmission of legacy PDCCH.
3. method as claimed in claim 2 is characterized in that, also comprises:
Saidly be used for indicating the down control channel E-PDCCH information configured territory of enhancing to be arranged on Master Information Block MIB by Physical Broadcast Channel PBCH transmission.
4. the method for claim 1 is characterized in that, said preset search volume is the common search space.
5. the method for claim 1 is characterized in that, said definite E-PDCCH time-domain resource scope is: the L1 in the subframe～L2 OFDM symbol, wherein:
Said L1 is predefined fixed value, and perhaps said L1 is the value of setting according to system bandwidth;
Said L2 is predefined fixed value.
6. the method for claim 1 is characterized in that, also comprises:
The terminal receives the E-PDCCH that is used for dispatching patcher type of information block 1SIB1 that adopts system information Radio Network Temporary Identifier symbol SI-RNTI scrambling in predefined subframe.
7. the method for claim 1 is characterized in that, said definite E-PDCCH frequency domain resource scope is: the M that makes an appointment in a subframe PRB, M are fixed value of making an appointment or the value of being indicated by enhanced physical control format indicating channel E-PCFICH.
8. method as claimed in claim 7 is characterized in that, the said M that a makes an appointment PRB has the frequency domain interval of setting.
9. method as claimed in claim 7; It is characterized in that; The said M that a makes an appointment PRB begins the position of the 1st PRB and is confirmed by cell identifier from low frequency; Perhaps confirm, perhaps confirm, perhaps confirm by virtual subdistrict identifier and subframe numbering by cell identifier and subframe numbering by the virtual subdistrict identifier.
10. the method for claim 1 is characterized in that, also comprises:
The terminal confirms in the said E-PDCCH running time-frequency resource scope that the shared Resource Unit of public reference signal CRS is not used in the E-PDCCH transmission, and the port number of CRS is consistent with the employed CRS port number of PBCH.
11. the method for claim 1 is characterized in that, also comprises:
The terminal confirms in the said E-PDCCH running time-frequency resource scope that the shared Resource Unit of user-specific reference signal UERS is not used in the E-PDCCH transmission, and the port number of UERS is consistent with the employed UERS port number of E-PDCCH.
12. the method for claim 1 is characterized in that, also comprises:
The terminal confirms in the said E-PDCCH running time-frequency resource scope that zero energy and the shared Resource Unit of non-zero power CSI-RS are not used in the E-PDCCH transmission under the set of channel state information reference signals CSI-RS maximum configured.
13. the method for claim 1 is characterized in that, also comprises:
The terminal is confirmed not have the shared Resource Unit of CSI-RS in the said E-PDCCH running time-frequency resource scope.
14. the transmission method of the down control channel of an enhancing is characterized in that, comprising:
When the down control channel E-PDCCH that needs send to strengthen, in subframe, be that said E-PDCCH distributes running time-frequency resource by preset search volume in the predefined running time-frequency resource scope;
Send said E-PDCCH to the terminal.
15. method as claimed in claim 14 is characterized in that, also comprises:
Send the down control channel E-PDCCH information configured territory that is used to indicate enhancing to said terminal, said information field is used for the said E-PDCCH transmission means of indicating terminal for not relying on the E-PDCCH transmission of legacy PDCCH.
16. method as claimed in claim 15 is characterized in that, saidly is used for indicating the down control channel E-PDCCH information configured territory of enhancing to be arranged on the Master Information Block MIB by Physical Broadcast Channel PBCH transmission.
17. method as claimed in claim 14 is characterized in that, said predefined E-PDCCH time-domain resource scope is: the L1 in the subframe～L2 OFDM symbol, wherein:
Said L1 is predefined fixed value, and perhaps said L1 is the value of setting according to system bandwidth;
Said L2 is predefined fixed value.
18. method as claimed in claim 14 is characterized in that, also comprises:
For the E-PDCCH that is used for dispatching patcher type of information block 1SIB1 that adopts system information Radio Network Temporary Identifier symbol SI-RNTI scrambling in the predefined running time-frequency resource scope of predefined subframe by preset search volume Resources allocation.
19. method as claimed in claim 14; It is characterized in that; Said predefined E-PDCCH frequency domain resource scope is: the M that makes an appointment in a subframe PRB, M are fixed value of making an appointment or the value of being indicated by enhanced physical control format indicating channel E-PCFICH.
20. method as claimed in claim 19 is characterized in that, the said M that a makes an appointment PRB has the frequency domain interval of setting.
21. method as claimed in claim 19; It is characterized in that; The said M that a makes an appointment PRB begins the position of the 1st PRB and is confirmed by cell identifier from low frequency; Perhaps confirm, perhaps confirm, perhaps confirm by virtual subdistrict identifier and subframe numbering by cell identifier and subframe numbering by the virtual subdistrict identifier.
22. method as claimed in claim 14 is characterized in that, also comprises:
In the said E-PDCCH running time-frequency resource scope, the shared Resource Unit of public reference signal CRS is not used in the E-PDCCH transmission, and the port number of CRS is consistent with the employed CRS port number of PBCH.
23. method as claimed in claim 14 is characterized in that, also comprises:
In the said E-PDCCH running time-frequency resource scope, the shared Resource Unit of user-specific reference signal UERS is not used in the E-PDCCH transmission, and the port number of UERS is consistent with the employed UERS port number of E-PDCCH.
24. method as claimed in claim 15 is characterized in that, also comprises:
In the said E-PDCCH running time-frequency resource scope, zero energy and the shared Resource Unit of non-zero power CSI-RS are not used in the E-PDCCH transmission under the set of channel state information reference signals CSI-RS maximum configured.
25. method as claimed in claim 14 is characterized in that, also comprises:
Do not send the CSI-RS of zero energy and non-zero power in the said E-PDCCH running time-frequency resource scope.
26. the transmitting device of the down control channel of an enhancing is characterized in that, comprising:
Confirm the unit, be used for confirming to receive E-PDCCH;
Receiving element is used in the E-PDCCH running time-frequency resource scope of confirming, carrying out blind Detecting to receive E-PDCCH by preset search volume.
27. device as claimed in claim 26 is characterized in that, said definite unit specifically is used for:
According to the definite E-PDCCH of reception in down control channel E-PDCCH information configured territory that is used to indicate enhancing that receives, said information field is used for the said E-PDCCH transmission means of indicating terminal for not relying on the E-PDCCH transmission of legacy PDCCH.
28. device as claimed in claim 27 is characterized in that, saidly is used for indicating the down control channel E-PDCCH information configured territory of enhancing to be arranged on the Master Information Block MIB by Physical Broadcast Channel PBCH transmission.
29. device as claimed in claim 26 is characterized in that, said definite E-PDCCH time-domain resource scope is: the L1 in the subframe～L2 OFDM symbol, wherein:
Said L1 is predefined fixed value, and perhaps said L1 is the value of setting according to system bandwidth;
Said L2 is predefined fixed value.
30. device as claimed in claim 26 is characterized in that, said receiving element also is used for:
In predefined subframe, receive the E-PDCCH that is used for dispatching patcher type of information block 1SIB1 that adopts system information Radio Network Temporary Identifier symbol SI-RNTI scrambling.
31. device as claimed in claim 30; It is characterized in that; Said definite E-PDCCH frequency domain resource scope is: the M that makes an appointment in a subframe PRB, M are fixed value of making an appointment or the value of being indicated by enhanced physical control format indicating channel E-PCFICH.
32. device as claimed in claim 26 is characterized in that, said receiving element also is used for:
Confirm in the said E-PDCCH running time-frequency resource scope that the shared Resource Unit of public reference signal CRS is not used in the E-PDCCH transmission, and the port number of CRS is consistent with the employed CRS port number of PBCH.
33. device as claimed in claim 26 is characterized in that, said receiving element also is used for:
Confirm in the said E-PDCCH running time-frequency resource scope that the shared Resource Unit of user-specific reference signal UERS is not used in the E-PDCCH transmission, and the port number of UERS is consistent with the employed UERS port number of E-PDCCH.
34. device as claimed in claim 26 is characterized in that, said receiving element also is used for:
Confirm in the said E-PDCCH running time-frequency resource scope that zero energy and the shared Resource Unit of non-zero power CSI-RS are not used in the E-PDCCH transmission under the set of channel state information reference signals CSI-RS maximum configured.
35. device as claimed in claim 26 is characterized in that, said receiving element also is used for:
Confirm not have the shared Resource Unit of CSI-RS in the said E-PDCCH running time-frequency resource scope.
36. the transmitting device of the down control channel of an enhancing is characterized in that, comprising:
Resource allocation unit is used for when the down control channel E-PDCCH that needs send to strengthen, and in subframe, is that said E-PDCCH distributes running time-frequency resource by preset search volume in the predefined running time-frequency resource scope;
Transmitting element is used for sending said E-PDCCH to the terminal.
37. device as claimed in claim 36 is characterized in that, said transmitting element also is used for:
Send the down control channel E-PDCCH information configured territory that is used to indicate enhancing to said terminal, said information field is used for the said E-PDCCH transmission means of indicating terminal for not relying on the E-PDCCH transmission of legacy PDCCH.
38. device as claimed in claim 37 is characterized in that, saidly is used for indicating the down control channel E-PDCCH information configured territory of enhancing to be arranged on the Master Information Block MIB by Physical Broadcast Channel PBCH transmission.
39. device as claimed in claim 36 is characterized in that, said predefined E-PDCCH time-domain resource scope is: the L1 in the subframe～L2 OFDM symbol, wherein:
Said L1 is predefined fixed value, and perhaps said L1 is the value of setting according to system bandwidth;
Said L2 is predefined fixed value.
40. device as claimed in claim 36 is characterized in that, said resource allocation unit also is used for:
For the E-PDCCH that is used for dispatching patcher type of information block 1SIB1 that adopts system information Radio Network Temporary Identifier symbol SI-RNTI scrambling distributes the running time-frequency resource of predefined subframe.
41. device as claimed in claim 36; It is characterized in that; Said predefined E-PDCCH frequency domain resource scope is: the M that makes an appointment in a subframe PRB, M are fixed value of making an appointment or the value of being indicated by enhanced physical control format indicating channel E-PCFICH.
42. device as claimed in claim 36 is characterized in that, said resource allocation unit also is used for:
Confirm in the said E-PDCCH running time-frequency resource scope that the shared Resource Unit of public reference signal CRS is not used in the E-PDCCH transmission, and the port number of CRS is consistent with the employed CRS port number of PBCH.
43. device as claimed in claim 36 is characterized in that, said resource allocation unit also is used for:
Confirm in the said E-PDCCH running time-frequency resource scope that the shared Resource Unit of user-specific reference signal UERS is not used in the E-PDCCH transmission, and the port number of UERS is consistent with the employed UERS port number of E-PDCCH.
44. device as claimed in claim 36 is characterized in that, said resource allocation unit also is used for:
Confirm in the said E-PDCCH running time-frequency resource scope that zero energy and the shared Resource Unit of non-zero power CSI-RS are not used in the E-PDCCH transmission under the set of channel state information reference signals CSI-RS maximum configured.
45. device as claimed in claim 36 is characterized in that, said resource allocation unit also is used for:
Confirm not send in the said E-PDCCH running time-frequency resource scope CSI-RS of zero energy and non-zero power.
Priority Applications (2)
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| CN201210074680.2A CN102594513B (en) | 2012-03-20 | 2012-03-20 | Enhanced downlink control signal channel transmission method and device |
| PCT/CN2013/072024 WO2013139197A1 (en) | 2012-03-20 | 2013-02-28 | Method and device for transmitting enhanced downlink control channel |
Applications Claiming Priority (1)
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| CN201210074680.2A CN102594513B (en) | 2012-03-20 | 2012-03-20 | Enhanced downlink control signal channel transmission method and device |
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| CN102594513A true CN102594513A (en) | 2012-07-18 |
| CN102594513B CN102594513B (en) | 2015-01-07 |
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| CN201210074680.2A Active CN102594513B (en) | 2012-03-20 | 2012-03-20 | Enhanced downlink control signal channel transmission method and device |
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| WO (1) | WO2013139197A1 (en) |
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| WO2013139197A1 (en) | 2013-09-26 |
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