CN102711253B - E-PDCCH (Enhanced-Physical Downlink Control Channel) resource mapping method and device therefor - Google Patents
E-PDCCH (Enhanced-Physical Downlink Control Channel) resource mapping method and device therefor Download PDFInfo
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Abstract
The invention discloses an E-PDCCH (Enhanced-Physical Downlink Control Channel) resource mapping method and a device for E-PDCCH resource mapping. With the adoption of the technical scheme of the embodiment, in a process of configuring a time-frequency resource (at least two PRB (Physical Resource Block) pairs) for transmitting an E-PDCCH to terminal equipment, the transmission of the E-PDCCH can be carried out in a non-interweaving manner through a control time frequency resource unit (E-CCE (Enhanced-Control Channel Element) formed by a plurality of continuous time frequency resource groups (REGs (Resource Element Groups)), and an E-CCE formed by connecting a plurality of the REGs between the two PRB pairs through adopting a cascaded manner, so that the resource mapping problem of transmission in the non-interweaving manner when one PRB pair contains E-CCEs with the quantity being non-integer is solved, and a resource configuration scheme in an E-PDCCH transmission process is flexible, a system resource is sufficiently utilized and the transmission efficiency of the E-PDCCH is improved.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to method for mapping resource and the device of a kind of E-PDCCH.
Background technology
At LTE(Long Term Evolution, Long Term Evolution) in Rel-8/9/10 system, PDCCH(Physical Downlink Control Channel, Physical Downlink Control Channel) send in each wireless sub-frame, as shown in Figure 1, it takies the top n OFDM(Orthogonal Frequency Division Multiplexing of a subframe, OFDM) symbol transmission, wherein, the possible value of N is 1, 2, 3, 4, and N=4 only to allow to appear at system bandwidth be in the system of 1.4MHz, here top n OFDM symbol is claimed to be " traditional PDCCH region ".
The control area of transmitting PDCCH in LTE Rel-8/9/10 system is by the CCE(Control Channel Element of logical partitioning, control channel unit) form, wherein, a CCE is by 9 REG(Resource Element Group, resource unit group) composition.REG is by 4 RE(Resource Element adjacent on identical in time domain, frequency domain, Resource Unit) composition, the RE wherein forming REG does not comprise the RE for transmitting reference symbol (Reference Signal, reference signal).The definition of concrete REG as shown in Figure 2.
DCI(Downlink Control Information, Downlink Control Information) transmission be also unit based on CCE, for a UE(User Equipment, subscriber equipment, i.e. user terminal) a DCI can send in M in logic continuous print CCE, in LTE system, the possible value of M is 1,2,4,8, be called CCE polymerization grade (Aggregation Level).UE carries out PDCCH blind check in control area, whether search exists the PDCCH sent for it, namely blind check uses the RNTI(Radio Network Temporary Identity of this UE, Radio Network Temporary Identifier) decoding trial is carried out to different DCI format and CCE polymerization grade, if decoding is correct, then receive the DCI for this UE.LTE UE at DRX(Discontinuous Reception, discontinuous reception) each descending sub frame in state needs to carry out blind check to control area, search PDCCH.
Define for Relay(relaying in LTE Rel-10 system) Physical Downlink Control Channel (R-PDCCH of system, i.e. Relay-PDCCH), it takies PDSCH(Physical Downlink Shared Channel, Physical Downlink Shared Channel) region, as shown in Figure 3, wherein R-PDCCH is used for base station to Relay control channel to R-PDCCH and PDSCH resource structures figure.
The resource that wherein R-PDCCH takies is configured by high-level signaling.The PRB pair(Physical Resource Block pair that it takies, Physical Resource Block to) resource can be continuous print also can be discrete.In the definition of the search volume of R-PDCCH, R-PDCCH does not comprise public search space, the R-PDCCH search volume only having Relay special.Its DL grant(Downlink grant, descending scheduling is permitted) and UL grant(Uplink grant, uplink scheduling license) by TDM(Time Division Multiplexed, time division multiplexing) mode transmit.
DL grant transmits in first time slot.In first time slot, Relay detects the DCI format 1A DCI format relevant to transmission mode with.
UL grant transmits in second time slot.In second time slot, Relay detects the DCI format 0 DCI format relevant to transmission mode with.
Meanwhile, defining two kinds of transmission meanss in the transmission of R-PDCCH, is the pattern of pattern and the non-interwoven interweaved respectively.
The pattern interweaved, wherein continue to use the definition of the PDCCH in LTE Rel-8/9/10 system, polymerization grade is in units of CCE, and wherein each CCE is made up of 9 REG, and the mode of the intertexture defined in PDCCH is continued to use in the mapping wherein between CCE and REG;
The mode of non-interwoven, the unit of its polymerization grade is PRB(Physical Resource Block, Physical Resource Block), the order of the resource that the candidate channel wherein in search volume takies and PRB has fixing mapping relations.
At the E-PDCCH(Enhanced PDCCH of LTE Rel-11, the PDCCH of enhancing) discuss in, the running time-frequency resource that E-PDCCH takies is configured by high-level signaling, wherein, has the definition of following several control channel resource:
An integer E-CCE(Enhanced CCE is comprised, the CCE of enhancing in a PRB pair), the mapping relations between its RE and E-CCE are as shown in Figure 4.
An E-CCE has multiple E-REG(Enhanced REG, the REG of enhancing) composition, wherein E-REG can be identical with the definition of REG, also can be different.
Realizing in process of the present invention, inventor finds at least there is following problem in prior art:
Localized(local for E-PDCCH) in transmission mode (support beamforming transmission), existing technical scheme always defines based on the mode comprising an integer E-CCE in a PRB pair, processing procedure in the application scenarios of reality is limited, be not easy to the flexible transmission of information, the transmission mode of localized can not be supported to greatest extent.
Summary of the invention
Embodiments provide method for mapping resource and the device of a kind of E-PDCCH, in order to realize transmitting across PRB pair of E-CCE, thus solve the problem of carrying out the transmission of a non-integer E-CCE in a PRB pair.
On the one hand, the method for mapping resource of a kind of E-PDCCH that the embodiment of the present invention provides, comprising:
The running time-frequency resource for transmitting E-PDCCH of described terminal equipment is given by high-level signaling notification terminal Equipments Setting in base station;
Described base station for transmitting in the running time-frequency resource of E-PDCCH, adopts the mode of non-interwoven to send E-PDCCH to described terminal equipment described;
Wherein, the described running time-frequency resource for transmitting E-PDCCH comprises at least two PRB pair, described at least two PRB pair comprise multiple running time-frequency resource group, the running time-frequency resource of described E-PDCCH comprises multiple control running time-frequency resource unit, each control running time-frequency resource unit is respectively by the multiple continuous print running time-frequency resource groups in each PRB pair, or the multiple running time-frequency resource groups adopting the mode of cascade to be connected between two PRB pair formed.
On the other hand, a kind of base station that the embodiment of the present invention provides, comprising:
Configuration module, for giving the running time-frequency resource for transmitting E-PDCCH of described terminal equipment by high-level signaling notification terminal Equipments Setting;
Sending module, for described for transmitting in the running time-frequency resource of E-PDCCH, adopt the mode of non-interwoven to send E-PDCCH to described terminal equipment;
Wherein, the described running time-frequency resource for transmitting E-PDCCH comprises at least two PRB pair, described at least two PRB pair comprise multiple running time-frequency resource group, the running time-frequency resource of described E-PDCCH comprises multiple control running time-frequency resource unit, each control running time-frequency resource unit is respectively by the multiple continuous print running time-frequency resource groups in each PRB pair, or the multiple running time-frequency resource groups adopting the mode of cascade to be connected between two PRB pair formed.
On the other hand, the method for mapping resource of the another kind of E-PDCCH that the embodiment of the present invention provides, comprising:
Terminal equipment receives base station by high-level signaling and configures to the running time-frequency resource for transmitting E-PDCCH of described terminal equipment;
Described terminal equipment for transmitting in the running time-frequency resource of E-PDCCH, receives the E-PDCCH that mode sends that described base station adopts non-interwoven described;
Wherein, the described running time-frequency resource for transmitting E-PDCCH comprises at least two PRB pair, described at least two PRB pair comprise multiple running time-frequency resource group, the running time-frequency resource of described E-PDCCH comprises multiple control running time-frequency resource unit, each control running time-frequency resource unit is respectively by the multiple continuous print running time-frequency resource groups in each PRB pair, or the multiple running time-frequency resource groups adopting the mode of cascade to be connected between two PRB pair formed.
On the other hand, a kind of terminal equipment that the embodiment of the present invention provides, comprising:
Configuration module, configures to the running time-frequency resource for transmitting E-PDCCH of described terminal equipment for receiving base station by high-level signaling;
Receiver module, for described for transmitting in the running time-frequency resource of E-PDCCH, receive described base station and adopt the E-PDCCH that mode sends of non-interwoven;
Wherein, the described running time-frequency resource for transmitting E-PDCCH comprises at least two PRB pair, described at least two PRB pair comprise multiple running time-frequency resource group, the running time-frequency resource of described E-PDCCH comprises multiple control running time-frequency resource unit, each control running time-frequency resource unit is respectively by the multiple continuous print running time-frequency resource groups in each PRB pair, or the multiple running time-frequency resource groups adopting the mode of cascade to be connected between two PRB pair formed.
Compared with prior art, the technical scheme that the embodiment of the present invention proposes has the following advantages:
By applying the technical scheme of the embodiment of the present invention, configuration to terminal equipment for transmitting in the running time-frequency resource (at least two PRB pair) of E-PDCCH, can by the control running time-frequency resource unit (E-CCE) be made up of the multiple continuous print running time-frequency resource groups (REG) in each PRB pair, and the E-CCE that multiple REG forms adopting the mode of cascade to be connected between two PRB pair, the mode of non-interwoven is adopted to carry out the transmission of E-PDCCH, thus, solve comprise in a PRB pair be not integer E-CCE time the resource mapping problem of non-interlacing mode transmission, make the resource allocation proposal flexibility in E-PDCCH transmitting procedure, take full advantage of system resource, improve the efficiency of transmission of E-PDCCH.
Accompanying drawing explanation
Fig. 1 is the multiplexing relation schematic diagram of control area and data area in a descending sub frame in existing LTE Rel-8/9/10 system;
Fig. 2 is the schematic diagram of REG in existing LTE Rel-8/9/10 system;
Fig. 3 is the resource structures figure of R-PDCCH and PDSCH in existing LTE Rel-10 system;
Fig. 3 is the mapping relations schematic diagram in existing LTE Rel-11 system between RE and E-CCE;
The schematic flow sheet of the method for mapping resource of a kind of E-PDCCH that Fig. 5 proposes for the embodiment of the present invention;
The schematic diagram of a kind of principle preferential according to time domain selection RE composition E-REG that Fig. 6 proposes for the embodiment of the present invention;
The schematic diagram of a kind of principle preferential according to frequency domain selection RE composition E-REG that Fig. 7 proposes for the embodiment of the present invention;
The schematic diagram of a kind of concrete application scenarios that Fig. 8 proposes for the embodiment of the present invention;
The schematic diagram of E-CCE and the E-REG resource mapping that Fig. 9 proposes for the embodiment of the present invention one;
The mapping schematic diagram of E-CCE on physical resource that Figure 10 proposes for the embodiment of the present invention one;
The schematic diagram of E-CCE and the E-REG resource mapping that Figure 11 proposes for the embodiment of the present invention two;
The mapping schematic diagram of E-CCE on physical resource that Figure 12 proposes for the embodiment of the present invention two;
The structural representation of a kind of base station that Figure 13 proposes for the embodiment of the present invention;
The structural representation of a kind of terminal equipment that Figure 14 proposes for the embodiment of the present invention.
Embodiment
As stated in the Background Art, in order to promote LTE-A(Long Term Evolution Advanced, senior Long Term Evolution) systematic function, expand PDCCH capacity, in Rel-11 version, introduce E-PDCCH.Current standard discussion has determined that E-PDCCH will support beamforming transmission (corresponding to localized transmission mode) and diversity transmission (corresponding to distributed transmission mode) two kinds of patterns, is applied to different scenes.But such scheme always defines based on the mode comprising an integer E-CCE in a PRB pair, limits the processing procedure in the application scenarios of reality, is not easy to the flexible transmission of information.
In order to overcome such defect, the embodiment of the present invention proposes the method for mapping resource of a kind of E-PDCCH, in order to realize transmitting across PRB pair of E-CCE, in a PRB pair, namely carries out the transmission of a non-integer E-CCE, thus, effectively can support the transmission mode of localized.
As shown in Figure 5, the schematic flow sheet of the method for mapping resource of a kind of E-PDCCH proposed for the embodiment of the present invention, the method specifically comprises the following steps:
The running time-frequency resource for transmitting E-PDCCH of described terminal equipment is given in step S501, base station by high-level signaling notification terminal Equipments Setting.
Wherein, the described running time-frequency resource for transmitting E-PDCCH comprises at least two PRB pair, and described at least two PRB pair comprise multiple running time-frequency resource group.In the present embodiment, running time-frequency resource group specifically can be called E-REG(Enhanced REG, the REG of enhancing), for convenience of describing, below, replace the appellation of running time-frequency resource group with E-REG, such title change can't affect protection scope of the present invention.
It should be noted that, at least two above-mentioned PRB pair, be specially at least two PRB pair for E-PDCCH transmission adjacent on the position of the running time-frequency resource of physics.
And for above-mentioned at least two distributions of PRB pair on frequency domain, then can be continuous print, also can be discontinuous.But, in order to better realize the transmission of follow-up E-PDCCH, in the selection of PRB pair, preferably can select the PRB pair of logically adjacent support identical traffic pattern.
In concrete enforcement scene, the concrete quantity of above-mentioned PRB pair, and the selection of frequency domain position can be selected according to actual needs, such change does not affect the protection range of the embodiment of the present invention.
What needs further illustrated is, for the ease of the E-CCE(Enhanced CCE corresponding to follow-up E-PDCCH, strengthen CCE) cascaded transmission, multiple E-REG included at least two above-mentioned PRB pair need to be numbered by cascade system, thus the multiple E-REG included by making at least two PRB pair become the running time-frequency resource set that continuous print can be used for transmitting E-PDCCH.
In the application scenarios of reality, above-mentioned E-REG, leave over specifically by except reference signal, legacy() PDCCH, PBCH(Physical Broadcast Channel, Physical Broadcast Channel), PSS(Primary Synchronization Signal, master sync signal) or SSS(Secondary Synchronization Signal, auxiliary synchronous signal) shared by running time-frequency resource unit outside multiple running time-frequency resource unit form.
Wherein, above-mentioned reference signal, at least can comprise CRS, DMRS, CSI-RS(Channel State Information Reference Signal, channel state information reference signals), muting(is quiet) CSI-RS.
Consider the unification with prior art; the quantity of running time-frequency resource unit (i.e. RE) included in above-mentioned E-REG, can preferably be set to 4, certainly; also can be set to other numerical value according to actual needs, such change does not affect protection scope of the present invention.
Need to further illustrate, the RE included by above-mentioned E-REG, specifically can adopt any one following method to select:
Method one, in corresponding PRB pair, selected by the principle that time domain is preferential.
As shown in Figure 6, a kind of principle preferential according to time domain proposed for the embodiment of the present invention selects RE to form the schematic diagram of E-REG, and in this embodiment, each E-REG comprises 4 RE.
Method two, in corresponding PRB pair, selected by the principle that frequency domain is preferential.
As shown in Figure 7, a kind of principle preferential according to frequency domain proposed for the embodiment of the present invention selects RE to form the schematic diagram of E-REG, and in this embodiment, each E-REG comprises 4 RE.
Method three, in corresponding PRB pair, pattern(general layout according to presetting) selected by principle.
In the application scenarios of reality, can determine the system of selection of RE according to the actual needs, such change does not affect protection scope of the present invention.
Step S502, described base station for transmitting in the running time-frequency resource of E-PDCCH, adopt the mode of non-interwoven to send E-PDCCH to described terminal equipment described.
Wherein, the running time-frequency resource of the E-PDCCH transmitted comprises multiple control running time-frequency resource unit; in the present embodiment; control running time-frequency resource unit and specifically can be called E-CCE; for convenience of describing; below, replace with E-CCE the appellation controlling running time-frequency resource unit, such title change can't affect protection scope of the present invention.
Concrete, each E-CCE and aforesaid E-REG comprises two kinds of mapping modes:
Multiple continuous print E-REG in mode one, each PRB pair form E-CCE.
Such mode forms E-CCE by the E-REG of a PRB pair inside, similar with the roadmap of prior art, do not repeat them here.
The multiple E-REG adopting the mode of cascade to be connected between mode two, two PRB pair form E-CCE.
Such mode is by two of Logic adjacent (on other occasions, even can for multiple) E-REG of PRB pair forms an E-CCE jointly, namely transmitting across PRB pair of E-CCE is achieved, pass through the manner, several E-REG phase cascade that last several E-REG of previous PRB pair are forward with next PRB pair, common composition E-CCE, by such mode, PRB pair can realize the transmission of a non-integer E-CCE, take full advantage of conventionally the REG that can not be used to CCE transmission in each PRB pair because being not enough to the complete CCE of formation one, can not in the waste forming valuable running time-frequency resource, improve the efficiency of transmission of E-PDCCH.
Consider and the unification with prior art form the quantity of the E-REG of mapping relations with above-mentioned E-CCE, can preferably be set to 9, certainly, also can be set to other numerical value according to actual needs, such change does not affect protection scope of the present invention.
Corresponding, in terminal equipment side, needing to receive base station configures to the running time-frequency resource for transmitting E-PDCCH of this terminal equipment, and in such running time-frequency resource, receive the E-PDCCH that mode sends that described base station adopts non-interwoven, wherein, about configuration mode and the composition structure of running time-frequency resource, and in E-PDCCH transmitting procedure, mapping relations between E-CCE and E-REG all can refer to the explanation in abovementioned steps S501 and step S502, no longer repeated description, the handling process of corresponding terminal equipment side also no longer describes in detail at this.
Compared with prior art, the technical scheme that the embodiment of the present invention proposes has the following advantages:
By applying the technical scheme of the embodiment of the present invention, configuration to terminal equipment for transmitting in the running time-frequency resource (at least two PRB pair) of E-PDCCH, can by the control running time-frequency resource unit (E-CCE) be made up of the multiple continuous print running time-frequency resource groups (REG) in each PRB pair, and the E-CCE that multiple REG forms adopting the mode of cascade to be connected between two PRB pair, the mode of non-interwoven is adopted to carry out the transmission of E-PDCCH, thus, solve comprise in a PRB pair be not integer E-CCE time the resource mapping problem of non-interlacing mode transmission, make the resource allocation proposal flexibility in E-PDCCH transmitting procedure, take full advantage of system resource, improve the efficiency of transmission of E-PDCCH.
Below, in conjunction with concrete application scenarios, the technical scheme that the embodiment of the present invention proposes is described.
In concrete application scenarios, as shown in Figure 8, system is the running time-frequency resource that on terminal equipment configuration 4 frequency domains, discontinuous PRB pair transmits as E-PDCCH.
In follow-up several embodiments, different PRB pair selection schemes is adopted to be described respectively.
Embodiment one, 4 PRB pair all support the transmission mode of localized, and base station selected wherein two carry out the transmission of E-PDCCH.
Accordingly, based on above-mentioned scene explanation, in the present embodiment, selected by base station can be (PRB pair 0 in Fig. 8 for the PRB pair to terminal equipment transmission E-PDCCH, PRB pair 1), or (PRB pair 1, PRB pair 2), or (PRB pair 2, PRB pair 3).
Consider the configuration (RE shared by legacy PDCCH can not be selected to carry out the transmission of E-PDCCH) of the OFDM symbol that legacy PDCCH takies in supposing the system, 19 E-REG in a PRB pair, can be comprised.
Arrange each E-REG to be made up of 4 RE, each E-CCE is made up of 9 E-REG.
Then with (the PRB pair 0 in Fig. 8, PRB pair 1) be example, as shown in Figure 9, be the schematic diagram of E-CCE and the E-REG resource mapping that the embodiment of the present invention one proposes, wherein, each E-REG in PRB pair 0 and PRB pair 1 is numbered by cascade system.
Wherein, E-CCE 0, E-CCE 1 and E-CCE 3 are all made up of the E-REG in a PRB pair, namely continuous print E-REG 0 to the E-REG 8 in PRB pair 0 forms E-CCE 0, continuous print E-REG 27 to the E-REG 35 that continuous print E-REG 9 to E-REG 17 in PRB pair 0 forms in E-CCE 1, PRB pair 1 forms E-CCE 3.
But, E-CCE 2 is by the E-REG 18 in the E-REG(PRB pair 0 in two PRB pair, and continuous print E-REG 19 to the E-REG 26 in PRB pair 0) form, the E-REG in E-REG and the PRB pair 1 namely in PRB pair 0 forms an E-CCE by the mode of cascade.
According to above-mentioned mapping relations, as shown in Figure 10, be the mapping schematic diagram of E-CCE on physical resource that the embodiment of the present invention one proposes, wherein E-CCE 2 is made up of the portion of time frequency resources in PRB pair 0 and PRB pair 1.
Embodiment two, 4 PRB pair all support the transmission mode of localized, and base station selected wherein 3 carry out the transmission of E-PDCCH.
Accordingly, illustrate based on above-mentioned scene, in the present embodiment, selected by base station can be (PRB pair 0, PRB pair 1, PRB pair 2) in Fig. 8 for the PRB pair to terminal equipment transmission E-PDCCH, or (PRB pair 1, PRB pair 2, PRB pair 3).
Consider the configuration (RE shared by legacy PDCCH can not be selected to carry out the transmission of E-PDCCH) of the OFDM symbol that legacy PDCCH takies in supposing the system, 19 E-REG in a PRB pair, can be comprised.
Equally, arrange each E-REG and be made up of 4 RE, each E-CCE is made up of 9 E-REG.
Then with (the PRB pair 0 in Fig. 8, PRB pair 1, PRB pair 2) be example, as shown in Figure 10, for the schematic diagram of E-CCE and the E-REG resource mapping that the embodiment of the present invention two proposes, wherein, each E-REG in PRB pair 0, PRB pair 1 and PRB pair 2 is numbered by cascade system.
Wherein, E-CCE 0, E-CCE 1, E-CCE 3 and E-CCE 5 are all made up of the E-REG in a PRB pair, namely continuous print E-REG 0 to the E-REG 8 in PRB pair 0 forms E-CCE 0, continuous print E-REG 9 to E-REG 17 in PRB pair 0 forms E-CCE 1, continuous print E-REG 45 to the E-REG 53 that continuous print E-REG 27 to E-REG 35 in PRB pair 1 forms in E-CCE 3, PRB pair 2 forms E-CCE 5.
But, E-CCE 2 and E-CCE 4 is made up of the E-REG in two PRB pair, wherein, E-REG 18 in PRB pair 0 and continuous print E-REG 19 to the E-REG 26 in PRB pair 0 forms E-CCE 2, and continuous print E-REG 38 to the E-REG 44 in E-REG 36, E-REG 37 and PRB pair 2 in PRB pair 1 forms E-CCE 4, namely the E-REG in E-REG and the PRB pair 1 in PRB pair 0, and the E-REG in E-REG and PRB pair 2 in PRB pair 1, the mode respectively by cascade constitutes E-CCE.
According to above-mentioned mapping relations, as shown in figure 12, for the mapping schematic diagram of E-CCE on physical resource that the embodiment of the present invention two proposes, wherein, E-CCE 2 is made up of the portion of time frequency resources in PRB pair 0 and PRB pair 1, and E-CCE 4 is made up of the portion of time frequency resources in PRB pair 1 and PRB pair 2.
Based on above two embodiments, can find out, the PRB pair quantity applied in the method for mapping resource of the E-PDCCH that the embodiment of the present invention proposes can adjust according to actual needs, and such change does not affect protection scope of the present invention.
Embodiment three, in 4 PRB pair, PRB pair 0 and PRB pair 2 supports the transmission mode of localized, and PRB pair 1 and PRB pair 3 supports the transmission mode of distributed, and base station selected wherein 2 carry out the transmission of E-PDCCH.
Accordingly, illustrate based on above-mentioned scene, in the present embodiment, selected by base station is (PRB pair 0, PRB pair 2) in Fig. 8 for the PRB pair to terminal equipment transmission E-PDCCH.
The mapping relations of corresponding E-CCE and E-REG are see the explanation in aforesaid embodiment one, do not repeat them here, the present embodiment and the difference of aforesaid embodiment one are the difference of the PRB pair selection scheme supporting different transmission modes to bring due to PRB pair.
Such processing rule belongs to protection scope of the present invention equally.
Compared with prior art, the technical scheme that the embodiment of the present invention proposes has the following advantages:
By applying the technical scheme of the embodiment of the present invention, configuration to terminal equipment for transmitting in the running time-frequency resource (at least two PRB pair) of E-PDCCH, can by the control running time-frequency resource unit (E-CCE) be made up of the multiple continuous print running time-frequency resource groups (REG) in each PRB pair, and the E-CCE that multiple REG forms adopting the mode of cascade to be connected between two PRB pair, the mode of non-interwoven is adopted to carry out the transmission of E-PDCCH, thus, solve comprise in a PRB pair be not integer E-CCE time the resource mapping problem of non-interlacing mode transmission, make the resource allocation proposal flexibility in E-PDCCH transmitting procedure, take full advantage of system resource, improve the efficiency of transmission of E-PDCCH.
In order to realize the technical scheme of the embodiment of the present invention, the embodiment of the present invention additionally provides a kind of base station, and its structural representation as shown in figure 13, at least comprises:
Configuration module 131, for giving the running time-frequency resource for transmitting E-PDCCH of described terminal equipment by high-level signaling notification terminal Equipments Setting;
Sending module 132, for described for transmitting in the running time-frequency resource of E-PDCCH, adopt the mode of non-interwoven to send E-PDCCH to described terminal equipment;
Wherein, the described running time-frequency resource for transmitting E-PDCCH comprises at least two PRB pair, described at least two PRB pair comprise multiple running time-frequency resource group, the running time-frequency resource of described E-PDCCH comprises multiple control running time-frequency resource unit, each control running time-frequency resource unit is respectively by the multiple continuous print running time-frequency resource groups in each PRB pair, or the multiple running time-frequency resource groups adopting the mode of cascade to be connected between two PRB pair formed.
Further, at least two PRB pair included in the described running time-frequency resource for transmitting E-PDCCH, are specially at least two PRB pair for E-PDCCH transmission adjacent on the position of the running time-frequency resource of physics.
In the application scenarios of reality, above-mentioned base station also comprises processing module 133, for multiple running time-frequency resource groups included in described at least two PRB pair being numbered by cascade system.
On the other hand, the embodiment of the present invention additionally provides a kind of terminal equipment, and its structural representation as shown in figure 14, at least comprises:
Configuration module 141, configures to the running time-frequency resource for transmitting E-PDCCH of described terminal equipment for receiving base station by high-level signaling;
Receiver module 142, for described for transmitting in the running time-frequency resource of E-PDCCH, receive described base station and adopt the E-PDCCH that mode sends of non-interwoven;
Wherein, the described running time-frequency resource for transmitting E-PDCCH comprises at least two PRB pair, described at least two PRB pair comprise multiple running time-frequency resource group, the running time-frequency resource of described E-PDCCH comprises multiple control running time-frequency resource unit, each control running time-frequency resource unit is respectively by the multiple continuous print running time-frequency resource groups in each PRB pair, or the multiple running time-frequency resource groups adopting the mode of cascade to be connected between two PRB pair formed.
In above-mentioned base station and terminal equipment, about configuration mode and the composition structure of running time-frequency resource, and in E-PDCCH transmitting procedure, the mapping relations between E-CCE and E-REG all can refer to the explanation in abovementioned steps S501 and step S502, at this no longer repeated description.
Compared with prior art, the technical scheme that the embodiment of the present invention proposes has the following advantages:
By applying the technical scheme of the embodiment of the present invention, configuration to terminal equipment for transmitting in the running time-frequency resource (at least two PRB pair) of E-PDCCH, can by the control running time-frequency resource unit (E-CCE) be made up of the multiple continuous print running time-frequency resource groups (REG) in each PRB pair, and the E-CCE that multiple REG forms adopting the mode of cascade to be connected between two PRB pair, the mode of non-interwoven is adopted to carry out the transmission of E-PDCCH, thus, solve comprise in a PRB pair be not integer E-CCE time the resource mapping problem of non-interlacing mode transmission, make the resource allocation proposal flexibility in E-PDCCH transmitting procedure, take full advantage of system resource, improve the efficiency of transmission of E-PDCCH.
It will be appreciated by those skilled in the art that the module in the device in embodiment can carry out being distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices being different from the present embodiment.The module of above-described embodiment can merge into a module, also can split into multiple submodule further.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium, comprising some instructions in order to make a station terminal equipment (can be mobile phone, personal computer, server, or the network equipment etc.) perform method described in each embodiment of the present invention.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should look protection scope of the present invention.
Claims (19)
1. the method for mapping resource of the Physical Downlink Control Channel E-PDCCH strengthened, it is characterized in that, the method comprises:
The running time-frequency resource for transmitting E-PDCCH of described terminal equipment is given by high-level signaling notification terminal Equipments Setting in base station;
Described base station for transmitting in the running time-frequency resource of E-PDCCH, adopts the mode of non-interwoven to send E-PDCCH to described terminal equipment described;
Wherein, the described running time-frequency resource for transmitting E-PDCCH comprises at least two Physical Resource Block to PRB pair, described at least two PRB pair comprise multiple running time-frequency resource group, the running time-frequency resource of described E-PDCCH comprises multiple control running time-frequency resource unit, and each running time-frequency resource unit that controls is made up of the multiple running time-frequency resource groups adopting the mode of cascade to be connected between two PRB pair;
Wherein, at least two PRB pair included in the described running time-frequency resource for transmitting E-PDCCH, are specially:
Support at least two PRB pair for E-PDCCH transmission adjacent on the position of the running time-frequency resource of physics of non-interwoven transmission mode.
2. the method for claim 1, is characterized in that, described at least two PRB pair are continuous on frequency domain, or discontinuous.
3. the method for claim 1, is characterized in that, multiple running time-frequency resource groups included in described at least two PRB pair, are numbered especially by cascade system.
4. the method for claim 1, is characterized in that, described running time-frequency resource group, is specially:
By except reference signal, leave over shared by Physical Downlink Control Channel legacy PDCCH, Physical Broadcast Channel PBCH, master sync signal PSS or auxiliary synchronous signal SSS running time-frequency resource unit except multiple running time-frequency resource unit form.
5. method as claimed in claim 4, it is characterized in that, described reference signal, at least comprises:
Public reference signal CRS, demodulated reference signal DMRS, channel state information reference signals CSI-RS, quiet channel state information reference signals muting CSI-RS.
6. method as claimed in claim 4, it is characterized in that, the quantity of the running time-frequency resource unit included by described running time-frequency resource group, is specially 4.
7. method as claimed in claim 4, it is characterized in that, the running time-frequency resource unit included by described running time-frequency resource group, is specially:
In corresponding PRB pair, selected by the principle that time domain is preferential; Or,
In corresponding PRB pair, selected by the principle that frequency domain is preferential; Or,
In corresponding PRB pair, selected by the general layout pattern principle preset.
8. the method for claim 1, is characterized in that, the quantity of the running time-frequency resource group included by described control running time-frequency resource unit, is specially 9.
9. a base station, is characterized in that, comprising:
Configuration module, for giving the running time-frequency resource for transmitting E-PDCCH of described terminal equipment by high-level signaling notification terminal Equipments Setting;
Sending module, for described for transmitting in the running time-frequency resource of E-PDCCH, adopt the mode of non-interwoven to send E-PDCCH to described terminal equipment;
Wherein, the described running time-frequency resource for transmitting E-PDCCH comprises at least two PRB pair, described at least two PRB pair comprise multiple running time-frequency resource group, the running time-frequency resource of described E-PDCCH comprises multiple control running time-frequency resource unit, and each running time-frequency resource unit that controls is made up of the multiple running time-frequency resource groups adopting the mode of cascade to be connected between two PRB pair respectively;
Wherein, at least two PRB pair included in the described running time-frequency resource for transmitting E-PDCCH, are specially:
Support at least two PRB pair for E-PDCCH transmission adjacent on the position of the running time-frequency resource of physics of non-interwoven transmission mode.
10. base station as claimed in claim 9, is characterized in that, also comprise:
Processing module, for being numbered multiple running time-frequency resource groups included in described at least two PRB pair by cascade system.
The method for mapping resource of 11. 1 kinds of E-PDCCH, is characterized in that, the method comprises:
Terminal equipment receives base station by high-level signaling and configures to the running time-frequency resource for transmitting E-PDCCH of described terminal equipment;
Described terminal equipment for transmitting in the running time-frequency resource of E-PDCCH, receives the E-PDCCH that mode sends that described base station adopts non-interwoven described;
Wherein, the described running time-frequency resource for transmitting E-PDCCH comprises at least two PRB pair, described at least two PRB pair comprise multiple running time-frequency resource group, the running time-frequency resource of described E-PDCCH comprises multiple control running time-frequency resource unit, and each running time-frequency resource unit that controls is made up of the multiple running time-frequency resource groups adopting the mode of cascade to be connected between two PRB pair respectively;
Wherein, at least two PRB pair included in the described running time-frequency resource for transmitting E-PDCCH, are specially:
Support at least two PRB pair for E-PDCCH transmission adjacent on the position of the running time-frequency resource of physics of non-interwoven transmission mode.
12. methods as claimed in claim 11, is characterized in that, described at least two PRB pair are continuous on frequency domain, or discontinuous.
13. methods as claimed in claim 11, is characterized in that, multiple running time-frequency resource groups included in described at least two PRB pair, are numbered especially by cascade system.
14. methods as claimed in claim 11, it is characterized in that, described running time-frequency resource group, is specially:
Formed by the multiple running time-frequency resource unit except the running time-frequency resource unit shared by reference signal, legacy PDCCH, PBCH, PSS or SSS.
15. methods as claimed in claim 14, it is characterized in that, described reference signal, at least comprises:
CRS、DMRS、CSI-RS、muting CSI-RS。
16. methods as claimed in claim 14, it is characterized in that, the quantity of the running time-frequency resource unit included by described running time-frequency resource group, is specially 4.
17. methods as claimed in claim 16, it is characterized in that, the running time-frequency resource unit included by described running time-frequency resource group, is specially:
In corresponding PRB pair, selected by the principle that time domain is preferential; Or,
In corresponding PRB pair, selected by the principle that frequency domain is preferential; Or,
In corresponding PRB pair, selected by the general layout pattern principle preset.
18. methods as claimed in claim 11, is characterized in that, the quantity of the running time-frequency resource group included by described control running time-frequency resource unit, is specially 9.
19. 1 kinds of terminal equipments, is characterized in that, comprising:
Configuration module, configures to the running time-frequency resource for transmitting E-PDCCH of described terminal equipment for receiving base station by high-level signaling;
Receiver module, for described for transmitting in the running time-frequency resource of E-PDCCH, receive described base station and adopt the E-PDCCH that mode sends of non-interwoven;
Wherein, the described running time-frequency resource for transmitting E-PDCCH comprises at least two PRB pair, described at least two PRB pair comprise multiple running time-frequency resource group, the running time-frequency resource of described E-PDCCH comprises multiple control running time-frequency resource unit, and each running time-frequency resource unit that controls is made up of the multiple running time-frequency resource groups adopting the mode of cascade to be connected between two PRB pair respectively;
Wherein, at least two PRB pair included in the described running time-frequency resource for transmitting E-PDCCH, are specially:
Support at least two PRB pair for E-PDCCH transmission adjacent on the position of the running time-frequency resource of physics of non-interwoven transmission mode.
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| US9559797B2 (en) * | 2013-09-27 | 2017-01-31 | Mediatek Inc. | Methods of discovery and measurements for small cells in OFDM/OFDMA systems |
| WO2015103763A1 (en) * | 2014-01-09 | 2015-07-16 | 华为技术有限公司 | Configuration method, device and system for signalling resources |
| US10476641B2 (en) * | 2015-11-17 | 2019-11-12 | Qualcomm Incorporated | Back-to-back reference signals |
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| CA3041929C (en) * | 2016-11-03 | 2023-05-23 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Signal transmission method, terminal device, and network device |
| CN108023713B (en) * | 2016-11-04 | 2021-01-22 | 电信科学技术研究院 | Pilot frequency mapping method and device |
| EP3499825B1 (en) | 2016-12-19 | 2023-06-07 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for transmitting signal, network device and terminal device |
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