CN102638892A

CN102638892A - Method and device for performing resource mapping to E-PDCCHs (enhanced-physical downlink control channels)

Info

Publication number: CN102638892A
Application number: CN2012100828338A
Authority: CN
Inventors: 赵锐; 潘学明; 拉盖施; 张然然
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2012-03-26
Filing date: 2012-03-26
Publication date: 2012-08-15
Anticipated expiration: 2032-03-26
Also published as: CN102638892B

Abstract

The invention discloses a method and a device for performing resource mapping to E-PDCCHs (enhanced-physical downlink control channels). At least one PRB (physical resource block) is included in time-frequency resources which are configured for a terminal and used for transmitting time-frequency resources of the E-PDCCHs, and E-REGs (enhanced-resource element group) used for performing frequency-domain localized transmission of E-PDCCHs and E-REGs used for performing frequency-domain distributed transmission of E-PDCCHs are included in the PRB pairs. The method includes mapping the E-PDDCHs needed to be subjected to the frequency-domain localized transmission to the E-REGs used for performing the frequency-domain localized transmission of E-PDCCHs; and mapping the E-PDDCHs needed to be subjected to the frequency-domain distributed transmission to the E-REGs used for performing the frequency-domain distributed transmission of E-PDCCHs. By the method and the device for performing resource mapping to the E-PDCCHs, definition of one PRB pair is not only limited to one transmission mode, flexibility and practicality of the resource mapping are improved, and resource utilization rate is improved effectively.

Description

Method and device for carrying out resource mapping on E-PDCCH

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for resource mapping in an E-PDCCH.

Background

In an LTE Rel-8/9/10(Long Term Evolution Rel-8/9/10, Long Term Evolution 8/9/10) system, a PDCCH (Physical Downlink Control Channel) is transmitted in each radio subframe, which occupies the first N OFDM (orthogonal frequency Division Multiplexing) symbol transmissions of one radio subframe. Where N may take values of 1, 2, 3, 4, and N ═ 4 is only allowed to occur in a system with a system bandwidth of 1.4MHz, where the first N OFDM symbols are referred to as "legacy PDCCH region".

In the LTE Rel-8/9/10 system, the multiplexing relationship between the control region and the data region in one downlink subframe is shown in fig. 1. The Control region for transmitting the PDCCH (i.e., the conventional PDCCH region) is formed by logically divided CCEs (Control Channel elements). One CCE is composed of 9 REGs (Resource Element Group), and mapping of CCEs to REGs is mapped in a full bandwidth range by using a REG interleaving-based method. One REG is composed of 4 REs that are identical in time domain and adjacent in frequency domain, the REs constituting the REG do not include REs for transmitting common reference symbols, and the specific REG is defined as shown in fig. 2, where RS (reference Signals) is a common reference symbol.

DCI (Downlink Control Information) is transmitted on the PDCCH. Then, the transmission of DCI is also based on CCE units. One DCI for one UE (User Equipment, i.e., terminal) may be transmitted in M logically consecutive CCEs, and in an LTE system, M may take a value of 1, 2, 4, and 8, which is referred to as CCE Aggregation Level (Aggregation Level). The UE performs PDCCH blind detection in a control region, searches whether a PDCCH transmitted for the UE exists, performs decoding attempt on different DCI formats and CCE aggregation levels by using RNTI (radio network temporary identity) of the UE in the blind detection, and receives DCI aiming at the UE if the decoding is correct. Each downlink subframe of the LTE UE in a non-DRX (Discontinuous Reception) state needs to perform blind detection on a control region and search for a PDCCH.

In the LTE Rel-10 system, a Physical Downlink control Channel (R-PDCCH) for a Relay system is defined, and the R-PDCCH is used for a base station to transmit control signaling to the Relay, and occupies a PDSCH (Physical Downlink Shared Channel) region.

The R-PDCCH and PDSCH resource structures are shown in fig. 3. Wherein, the resource occupied by the R-PDCCH is configured through high-level signaling. The PRB pair (Physical resource Block pair) resources occupied by it may be continuous or discontinuous. In the definition of the search space of the R-PDCCH, the R-PDCCH does not include a common search space, and only the relay-dedicated R-PDCCH search space. The DL grant (Downlink grant) and UL grant (Uplink grant) are transmitted by TDM (Time-Division Multiplexing):

the DL grant is transmitted in the first slot, and in the first slot, relay detects DCI format 1A (a transmission mode of DCI) and a DCI format (DCI format) related to the transmission mode.

The UL grant is transmitted in the second slot. In the second slot, relay detects DCI format 0 (another transmission mode of DCI) and a DCI format associated with the transmission mode.

Meanwhile, two mapping modes are defined in the transmission of the R-PDCCH, namely an interleaving mode and a non-interleaving mode:

an interleaving manner, which follows the definition of PDCCH in LTE Rel-8/9/10 system, the aggregation level is in CCE units, each CCE is composed of 9 REGs, wherein mapping between CCE and REG follows the interleaving manner defined in PDCCH;

in the non-interleaved mode, the unit of the aggregation level is PRB, and the resource occupied by the candidate channel in the search space has a fixed mapping relation with the sequence of PRB.

In the LTE Rel-11 system, an E-PDCCH (Enhanced PDCCH) is introduced. And determining that the E-PDCCH has two transmission modes of frequency domain continuous transmission (localized) and frequency domain discontinuous transmission (distributed), and applying the transmission modes to different scenes. Under a general condition, the localized transmission mode is mostly used in a scenario that a base station can obtain more accurate channel information fed back by the UE, and the interference of the neighboring cell is not very severe along with the change of the subframe, at this time, the base station selects a continuous frequency resource with better quality to transmit the E-PDCCH to the terminal according to the CSI fed back by the UE, and performs precoding/beamforming processing to improve the transmission performance. In the case that channel information cannot be accurately obtained, or the interference of neighboring cells varies dramatically and unpredictably with subframes, it is necessary to transmit the E-PDCCH in a distributed manner, i.e., using frequency resources which are discontinuous in frequency for transmission, so as to obtain frequency diversity gain.

No definition of E-PDCCH resources has been determined, and one possible definition is as follows:

one PRB pair contains an integer number of E-CCEs (Enhanced CCEs) used for localized transmission patterns of the E-PDCCH. One E-CCE is composed of a plurality of E-REGs (enhanced REGs), wherein the E-REGs may or may not be the same as the definition of REGs.

For the localized transmission mode of the E-PDCCH, the possible E-PDCCH resource definitions are always defined based on the way that one PRB pair includes an integer number of E-CCEs, and the E-REG in one PRB pair is only used for localized mode transmission of the E-PDCCH, or the E-REG in one PRB pair is only used for distributed mode transmission of the E-PDCCH, and the configuration for E-PDCCH resource mapping in the PRB pair is not flexible and practical.

Disclosure of Invention

The embodiment of the invention provides a method and a device for resource mapping in an E-PDCCH (enhanced-physical downlink control channel), which are used for improving the flexibility and the practicability of the resource mapping of the E-PDCCH in PRB pair.

The embodiment of the invention provides the following specific technical scheme:

a method for resource mapping of an enhanced physical downlink control channel (E-PDCCH) is provided, wherein time-frequency resources configured for a terminal and used for transmitting the E-PDCCH include at least one type-A physical resource pair PRB pair, and the type-A PRB pair includes an enhanced resource element group (E-REG) used for frequency-domain continuous transmission of the E-PDCCH and an E-REG used for frequency-domain discontinuous transmission of the E-PDCCH, the method includes:

mapping the E-PDCCH needing frequency domain continuous transmission to the E-REG for frequency domain continuous transmission of the E-PDCCH;

and mapping the E-POCCH needing the frequency domain discontinuous transmission to the E-REG for the frequency domain discontinuous transmission E-PDCCH.

A method for resource mapping of an enhanced physical downlink control channel (E-PDCCH) comprises the following steps:

receiving time-frequency resources for transmitting the E-PDCCH, wherein the time-frequency resources comprise at least one A-type physical resource pair PRB pair, and the A-type PRB pair comprises an enhanced resource element group E-REG for continuously transmitting the E-PDCCH in a frequency domain and an E-REG for discontinuously transmitting the E-PDCCH in the frequency domain;

receiving the E-PDCCH transmitted continuously in the frequency domain through the E-REG for continuously transmitting the E-PDCCH in the frequency domain; and/or receiving the E-PDCCH for frequency domain discontinuous transmission through the E-REG for frequency domain discontinuous transmission of the E-PDCCH.

An apparatus for resource mapping of an enhanced physical downlink control channel (E-PDCCH), comprising:

a time-frequency resource configuration module, configured to configure, for a terminal, a time-frequency resource used for transmitting the E-PDCCH, where the time-frequency resource includes at least one a-class physical resource pair PRB pair, and the a-class PRB pair includes an enhanced resource element group E-REG used for frequency-domain continuous transmission of the E-PDCCH, and an E-REG used for frequency-domain discontinuous transmission of the E-PDCCH;

a first resource mapping module, configured to map an E-PDCCH requiring frequency domain continuous transmission to the E-REGs for frequency domain continuous transmission of the E-PDCCH;

and the second resource mapping module is used for mapping the E-POCCH needing the frequency domain discontinuous transmission to the E-REG for the frequency domain discontinuous transmission E-PDCCH.

a time-frequency resource receiving module, configured to receive a time-frequency resource for transmitting an E-PDCCH, where the time-frequency resource includes at least one a-class physical resource pair PRB pair, and the a-class PRB pair includes a resource element group E-REG for frequency-domain continuous transmission of the E-PDCCH and an E-REG for frequency-domain discontinuous transmission of the E-PDCCH;

the time-frequency resource receiving module comprises a first E-PDCCH acquisition submodule and/or a second E-PDCCH acquisition submodule;

the first E-PDCCH acquisition sub-module is used for receiving the E-PDCCH transmitted continuously in the frequency domain through the E-REG for continuously transmitting the E-PDCCH in the frequency domain;

and the second E-PDCCH acquisition submodule is used for receiving the E-PDCCH transmitted discontinuously in the frequency domain through the E-REG for transmitting the E-PDCCH discontinuously in the frequency domain.

According to the method and the device for mapping the resources in the E-PDCCH, provided by the embodiment of the invention, at least one A-type physical resource pair configured for the terminal and used for transmitting the time-frequency resources of the E-PDCCH comprises an enhanced resource element group E-REG used for continuously transmitting the E-PDCCH in a frequency domain and an E-REG used for discontinuously transmitting the E-PDCCH in the frequency domain. Therefore, the definition of one PRB pair is not limited to one transmission mode, and the flexibility and the practicability of resource mapping are improved. In addition, E-REGs except for continuously transmitting the E-PDCCH in one PRB pair are used for discontinuously transmitting the E-PDCCH, so that the resource utilization rate is effectively improved.

Drawings

Fig. 1 is a schematic diagram illustrating a multiplexing relationship between a control region and a data region in a conventional downlink subframe;

FIG. 2 is a schematic diagram of the conventional REG composition;

FIG. 3 is a schematic diagram of a conventional R-PDCCH and PDSCH resource structure;

fig. 4 is a schematic structural diagram of a class a PRB pair according to an embodiment of the present invention;

fig. 5 is a flowchart of a method for resource mapping according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a time-frequency resource according to an embodiment of the present invention;

fig. 7 is a schematic diagram of the E-REG numbering in a first PRB pair according to an embodiment of the present invention;

fig. 8 is a schematic diagram of the E-REG numbering in a second PRB pair according to an embodiment of the present invention;

FIG. 9 is a flowchart of another method for resource mapping according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of an apparatus according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of another apparatus according to an embodiment of the present invention.

Detailed Description

The invention provides a method for mapping resources of an E-PDCCH by network side equipment.

The time-frequency resource configured for the terminal by the network side equipment and used for transmitting the E-PDCCH comprises at least one PRB pair, wherein the at least one PRB pair comprises an E-REG used for continuously transmitting the E-PDCCH in a frequency domain and an E-REG used for discontinuously transmitting the E-PDCCH in the frequency domain, and the PRB pair is called as a type-A PRB pair hereinafter. The network side device may be a base station, a relay, or the like. The network side equipment sends the time frequency resource configured for the terminal to the corresponding terminal through a high-level signaling; or the network side equipment and the terminal configure the time-frequency resource of the E-PDCCH transmitted to the terminal according to a pre-promised mode.

Specifically, in the type-A PRB pair, E-REGs other than the E-REGs used for frequency-domain continuous transmission of the E-PDCCH are E-REGs used for frequency-domain discontinuous transmission of the E-PDCCH.

For example, the A-type PRB pair shown in FIG. 4 comprises 24E-REGs (numbered 0-23 respectively), wherein the first 18E-REGs numbered 0-17 are used for frequency-domain continuous transmission of the E-PDCCH, and the last 6E-REGs numbered 18-23 are used for frequency-domain discontinuous transmission of the E-PDCCH. It should be noted that the number of E-REGs contained in one PRB pair in the time-frequency resource for transmitting the E-PDCCH may be defined according to the actual requirements in the application process, and is not necessarily 24.

Preferably, L REs (Resource elements) constituting the E-REG include REs occupied by Reference symbols such as CRS (Common Resource Signal), Legacy PDCCH (Legacy PDCCH), DMRS (Demodulation Reference Signal), CSI-RS (Cell-specific Reference Signal RS), and muting CSI-RS, and also include REs occupied by PBCH (physical broadcast channel) and PSS (primary synchronization Signal)/SSS (secondary synchronization Signal). The L REs may be selected according to a time domain priority criterion or a frequency domain priority criterion, or may be defined according to a specific pattern, and preferably, L takes a value of 4.

Based on the above time-frequency resource configuration, the resource mapping method provided by the embodiment of the present invention is shown in fig. 5, and the specific implementation manner includes the following operations:

step 100, a network side device maps the E-PDCCH needing frequency domain continuous transmission to the E-REG used for frequency domain continuous transmission of the E-PDCCH in the time frequency resource;

step 110, the network side device maps the E-PDCCH needing frequency domain discontinuous transmission to the E-REG used for frequency domain discontinuous transmission of the E-PDCCH in the time frequency resource.

In the method for mapping resources in the E-PDCCH provided by the embodiment of the invention, at least one A-type physical resource pair of time-frequency resources configured for the terminal and used for transmitting the E-PDCCH comprises an enhanced resource element group E-REG used for continuously transmitting the E-PDCCH in a frequency domain and an E-REG used for discontinuously transmitting the E-PDCCH in the frequency domain. Therefore, the definition of one PRB pair is not limited to one transmission mode, and the flexibility and the practicability of resource mapping are improved. In addition, E-REGs except for continuously transmitting the E-PDCCH in one PRB pair are used for discontinuously transmitting the E-PDCCH, so that the resource utilization rate is effectively improved.

In the present invention, a preferred implementation manner of the step 100 is: and mapping the E-PDCCH needing frequency domain continuous transmission to the E-REG for frequency domain continuous transmission by adopting a non-interleaving mode.

In the present invention, a preferred implementation manner of the step 110 is as follows: and mapping the E-POCCH needing the frequency domain discontinuous transmission to the E-REG for the frequency domain discontinuous transmission E-PDCCH in an interleaving mode. Wherein the granularity of interleaving is E-REG.

In the invention, all E-REGs for continuously transmitting the E-PDCCH in the frequency domain in one A-type PRB pair form an integral number of M E-CCEs. The value of M can be determined according to the actual application requirements.

Preferably, M is 2. For example, in PRB pair as shown in FIG. 4, E-REGs 0-17 for frequency-domain continuous transmission of E-PDCCH constitute 2E-CCEs. Wherein E-REGs 0-8 form E-CCE0, and EREG1 forms E-CCE 1.

Preferably, in the time-frequency resources configured for the same terminal, the value of M is the same in all the a-class PRB pairs.

Correspondingly, the method for the network side equipment to map the resources provided by the invention also comprises the following operations:

the network side equipment informs the determined value of M to the terminal through a high-level signaling;

or, the network side device determines the value of M according to a rule agreed with the terminal in advance. For example: a value of M may be agreed to be a fixed value (e.g., 2); or, the judgment can be performed according to the number of E-REGs for frequency-domain continuous transmission of the E-PDCCH in one PRB pair, if the number of the E-REGs is less than a predetermined value a, the value of M is agreed to be 1, and if the number of the E-REGs is greater than or equal to the predetermined value a, the value of M is agreed to be 2; and so on.

Preferably, the E-REGs of the E-PDCCH used for frequency-domain discontinuous transmission in all PRB pairs in the time-frequency resource constitute E-CCEs used for frequency-domain discontinuous transmission of the E-PDCCH. It may specifically, but not exclusively, include the following three cases:

and (I) only the A-type PRB pair exists in the time-frequency resource, and then E-REGs for frequency-domain discontinuous transmission of the E-PDCCH in all the A-type PRB pairs in the time-frequency resource form the E-CCE for frequency-domain discontinuous transmission of the E-PDCCH.

And (II) the time-frequency resources comprise A-type PRB pairs and B-type PRB pairs, so that E-REGs used for frequency-domain discontinuous transmission of the E-PDCCH in all the A-type PRB pairs in the time-frequency resources are combined with E-REGs in all the B-type PRB pairs to form the E-CCE used for discontinuous transmission of the E-PDCCH.

The B-type PRB pair refers to a PRB pair including only an E-REG for frequency-domain discontinuous transmission of an E-PDCCH.

And (III) only B-type PRB pair exists in the time-frequency resource, and then E-REGs in all B-type PRB pair in the time-frequency resource form E-CCEs for frequency-domain discontinuous transmission of the E-PDCCH.

For the second case, the number of E-CCEs used for frequency-domain discontinuous transmission of the E-PDCCH is set as

Wherein

For the number of E-REGs for frequency-domain discontinuous transmission E-PDCCH in all class-a PRB pairs in the time-frequency resource,

and K is the number of E-REGs for frequency-domain discontinuous transmission of the E-PDCCH in all B-type PRB pairs in the time-frequency resource, and the number of the E-REGs forming the E-CCE for the frequency-domain discontinuous transmission of the E-PDCCH. Preferably, K has a value of 9.

The method provided by the above embodiment of the present invention further includes an operation of numbering the E-REGs. E-REG numbering can be performed in several ways, but not limited to:

numbering E-REGs for E-REGs used for continuously transmitting E-PDCCH in frequency domain in all A types of PRB pairs of the time-frequency resources in a cascading manner according to the ascending or descending frequency of the PRB pairs in the time-frequency resources;

E-REG numbering is carried out on E-REGs used for frequency domain discontinuous transmission E-PDCCH in all A types of PRB pair of the time-frequency resource in a cascading manner according to the ascending order or the descending order of the frequency of the PRB pair in the time-frequency resource;

and numbering E-REGs for E-REGs used for frequency-domain discontinuous transmission of E-PDCCH in all B types of PRB pairs of the time-frequency resources in a cascading manner according to the ascending or descending frequency of the PRB pairs in the time-frequency resources.

After numbering the E-REGs for frequency-domain discontinuous transmission of the E-PDCCH is completed, the E-REG numbers for frequency-domain discontinuous transmission of the E-PDCCH in the class A PRBpair and the E-REG numbers for frequency-domain discontinuous transmission of the E-PDCCH in the class B PRBpair are concatenated to form the E-CCE for frequency-domain discontinuous transmission of the E-PDCCH.

For example, in the time-frequency resource diagram shown in fig. 6, the PRB pair resources for transmitting the E-PDCCH are PRB pair0, PRB pair1, and PRB pair 2. The PRBs pair0 and 1 are type A PRBs pair, and the PRBs pair2 are type B PRBs pair. The results of numbering the E-REGs in these three PRBpair in the first way are shown in FIG. 7.

Numbering E-REGs for continuously transmitting E-PDCCH for A-type PRB pair in a time-frequency resource in a cascade mode according to the ascending frequency of PRB pairs in the time-frequency resource means that after the E-REGs for continuously transmitting E-PDCCH in a frequency domain in the PRB pair0 are numbered from 0 to 17, the E-REGs for continuously transmitting E-PDCCH in the frequency domain in the PRB pair1 are numbered from 18 to 35 according to the ascending frequency.

Numbering E-REGs for frequency-domain discontinuous transmission E-PDCCH in A-type PRB pair in the time-frequency resources in a cascading manner according to the ascending frequency of PRB pairs in the time-frequency resources means that after the E-REGs for frequency-domain discontinuous transmission E-PDCCH in PRB pair0 are numbered from 0 to 5, the E-REGs for frequency-domain discontinuous transmission E-PDCCH in PRB pair1 are numbered from 6 to 11 according to the ascending frequency.

E-REG numbering is carried out on E-REGs used for frequency domain discontinuous transmission E-PDCCH in B-type PRB pair in the time frequency resource in a cascading mode, namely, numbering is carried out on the E-REGs in the PRB pair2 by 0-23.

Concatenating the E-REG numbers for frequency-domain discontinuous transmission of the E-PDCCH in the A-type PRB pair and the E-REG numbers for frequency-domain discontinuous transmission of the E-PDCCH in the B-type PRB pair means that E-REG numbers 0-11 for frequency-domain discontinuous transmission of the E-PDCCH in the PRB pairs 0 and 1 and E-REG numbers 0-23 in the PRB pairs 2 are concatenated, and specifically, the E-REG numbers 0-23 in the PRB pairs 2 can be logically positioned before or after the E-REG numbers 0-11 for frequency-domain discontinuous transmission of the E-PDCCH in the PRB pairs 0 and 1 to form the E-CCE for frequency-domain discontinuous transmission of the E-PDCCH.

In PRBs pair0 and PRBs pair1, E-REGs 0 to 7, E-REGs 8 to 17, E-REGs 18 to 25, and E-REGs 26 to 35 for frequency-domain continuous transmission of E-PDCCH constituting one CCE are logically and continuously distributed in number, respectively. It should be noted that what is shown in fig. 7 is only a preferred way of E-REG distribution in one PRB pair.

The above processing procedure may be referred to in a manner of performing E-REG numbering in a cascade manner according to the frequency descending order of PRB pair in the time-frequency resource, which is not described herein again.

Or,

(II) numbering E-REGs for continuously transmitting E-PDCCHs in a frequency domain in the A-type PRB pair of the time-frequency resource in a cascading manner according to the ascending or descending frequency of the PRB pair in the time-frequency resource;

and numbering E-REGs for E-REGs used for frequency-domain discontinuous transmission of E-PDCCHs in the A-type PRB pair and the B-type PRB pair in the time-frequency resources in a cascading manner according to the ascending or descending frequency sequence of the PRB pairs in the time-frequency resources.

Taking the time-frequency resource diagram shown in fig. 6 as an example, the result of numbering the E-REGs in the three PRB pairs by using the second manner is shown in fig. 8.

The specific implementation manner of numbering the E-REGs for continuously transmitting the E-PDCCH for the a-type PRB pair in the time-frequency resource in a cascaded manner according to the ascending frequency of the PRB pair in the time-frequency resource may refer to the description in the first manner, and is not described here again.

According to the ascending or descending frequency of the PRBs in the time-frequency resource, the E-REGs for the frequency-domain discontinuous transmission E-PDCCH in the A-type PRBs and the B-type PRBs in the time-frequency resource are numbered in a cascading manner, namely after the E-REGs for the frequency-domain discontinuous transmission E-PDCCH in the PRBs 0 are numbered from 0 to 5, the E-REGs for the frequency-domain discontinuous transmission E-PDCCH in the PRBs 1 are numbered from 6 to 11 according to the ascending frequency, and finally the E-REGs for the frequency-domain discontinuous transmission E-PDCCH in the PRBs 2 are numbered from 12 to 35.

According to the method provided by the invention, when E-PDCCH transmission is carried out, frequency domain continuous transmission and frequency domain discontinuous transmission are respectively carried out through different DMRS ports. Specifically, the E-PDCCH is continuously transmitted in the frequency domain through the first DMRS port, and the E-PDCCH is discontinuously transmitted in the frequency domain through the second DMRS port. Wherein, the first DMRS port may be DMRS port 7 and/or DMRS port 8, and the second DMRS port may be DMRS port 9 or DMRS port 10.

For example, when the value of M is 2, according to the convention with the terminal, the E-PDCCH is continuously transmitted in the frequency domain by using closed-loop-based precoding or beamforming through DMRS ports 7 and/or 8; according to the convention with the terminal, the E-PDCCH is discontinuously transmitted in the frequency domain through the DMRS port 9 and/or the DMRS port 10, and preferably, the E-PDCCH is discontinuously transmitted in the frequency domain through one of the

DMRS ports

9 or 10 by adopting an open loop method through a single port.

For another example, when the value of M is 1, according to the convention with the terminal, the E-PDCCH is continuously transmitted in the frequency domain by using closed-loop precoding or beamforming through one of

DMRS ports

7 or 8; according to the convention with the terminal, the E-PDCCH is discontinuously transmitted in the frequency domain through the DMRS port 9 and/or the DMRS port 10, and preferably, the E-PDCCH is discontinuously transmitted in the frequency domain through one of the

DMRS ports

9 or 10 by adopting an open loop method through a single port.

Generally, it is desirable that only E-PDCCH transmitted to one terminal is transmitted in one PRB pair, and the method provided by the present invention may further include the following operations:

transmitting the E-PDCCH mapped to the E-REG for frequency domain continuous transmission of the E-PDCCH through a first DMRS port; in this case, the corresponding precoding process may include a terminal-specific channel characteristic.

Transmitting the E-PDCCH mapped to the E-REG for frequency domain discontinuous transmission of the E-PDCCH through a second DMRS port; at this time, the corresponding precoding process does not include the channel characteristics specific to the terminal.

The first DMRS port is a dedicated DMRS port and is used for identifying that all E-REGs used for continuously transmitting the E-PDCCH in the frequency domain in one PRB pair are used for transmitting the E-PDCCH sent to the same terminal; and the second DMRS port is a shared DMRS port and is used for identifying that all E-REGs used for frequency domain discontinuous transmission of the E-PDCCH in one PRB pair can transmit the E-PDCCH sent to a plurality of terminals.

The first DMRS port and the second DMRS port do not overlap on time-frequency resources.

The present invention also provides a method for a terminal side to perform resource mapping on an E-PDCCH, which is implemented as shown in fig. 9, and the specific implementation manner includes the following operations:

step 200, a terminal receives a time-frequency resource for transmitting an E-PDCCH, wherein the time-frequency resource comprises at least one A-type PRB pair, and the at least one A-type PRB pair comprises an E-REG for continuously transmitting the E-PDCCH in a frequency domain and an E-REG for discontinuously transmitting the E-PDCCH in the frequency domain;

the step 200 is performed as a mapping procedure from the E-REG to the E-PDCCH.

Step 210, receiving the E-PDCCH transmitted continuously in the frequency domain through the E-REG for continuously transmitting the E-PDCCH in the frequency domain; and/or receiving the E-PDCCH for frequency domain discontinuous transmission through the E-REG for frequency domain discontinuous transmission of the E-PDCCH.

The step 210 is performed as a mapping procedure from the E-REG to the E-PDCCH.

In the method for resource mapping in the E-PDCCH provided by the embodiment of the invention, at least one A-type physical resource pair in the time-frequency resources received by the terminal comprises an enhanced resource element group E-REG for frequency-domain continuous transmission of the E-PDCCH and an E-REG for frequency-domain discontinuous transmission of the E-PDCCH. Therefore, the definition of one PRB pair is not limited to one transmission mode, and the flexibility and the practicability of resource mapping are improved. In addition, E-REGs except for continuously transmitting the E-PDCCH in one PRB pair are used for discontinuously transmitting the E-PDCCH, so that the resource utilization rate is effectively improved.

In the present invention, a preferred implementation manner of the above step 200 is: receiving the E-PDCCH transmitted continuously in the frequency domain by the E-REG for continuously transmitting the E-PDCCH in the frequency domain in a non-interleaving mode;

in the present invention, a preferred implementation manner of the step 210 is: and receiving the E-PDCCH transmitted discontinuously in the frequency domain by the E-REG for transmitting the E-PDCCH discontinuously in the frequency domain in a de-interleaving mode. Wherein, the granularity of de-interleaving is E-REG.

On the terminal side, E-REGs other than the E-REGs for frequency-domain continuous transmission of the E-PDCCH in the class-A PRB pair are E-REGs for frequency-domain discontinuous transmission of the E-PDCCH.

On the terminal side, all E-REGs for frequency-domain continuous transmission of E-PDCCH in one type-A PRB pair constitute an integer number M of E-CCEs. The specification of the value of M may refer to the description of the network side method, and is not described herein again.

Correspondingly, the method for mapping resources at the terminal side provided by the invention also comprises the following operations:

the terminal receives the value of M determined by the network side equipment carried in the high-level signaling;

or, the terminal determines the value of M according to a rule agreed with the network side device in advance.

Preferably, the E-REGs of the E-PDCCH used for frequency-domain discontinuous transmission in all PRB pairs in the time-frequency resource constitute E-CCEs used for frequency-domain discontinuous transmission of the E-PDCCH. The specific configuration and the specification of the number of E-CCEs used for frequency-domain discontinuous transmission E-PDCCH may refer to the description of the network-side method, and are not described herein again.

and numbering E-REGs for E-REGs used for frequency-domain discontinuous transmission of E-PDCCH in all A-type PRB pairs and all B-type PRB pairs in the time-frequency resources in a cascading manner according to the ascending or descending frequency of the PRB pairs in the time-frequency resources.

And the terminal side and the network side equipment adopt the same mode to carry out the numbering of the E-REG according to the convention.

The specific implementation manner of the E-REG encoding performed by the terminal side may refer to the description of the network side method, and is not described herein again.

According to the method provided by the invention, when time-frequency resources are received, the E-PDCCH continuously transmitted in the frequency domain and the E-PDCCH discontinuously transmitted in the frequency domain are received through different DMRS ports respectively. Specifically, the E-PDCCH continuously transmitted in the frequency domain is received through a first DMRS port, and the E-PDCCH discontinuously transmitted in the frequency domain is received through a second DMRS port. Wherein, the first DMRS port may be DMRS port 7 and/or DMRS port 8, and the second DMRS port may be DMRS port 9 and/or DMRS port 10. The specific DMRS port configuration is according to the convention with the network side equipment.

Generally, it is desirable that one PRB pair is only used for transmitting the E-PDCCH sent to one terminal, and in the method for resource mapping at the terminal side provided by the present invention, the specific implementation manner of the step 200 may be: receiving, at a first DMRS port, the E-PDCCH which is continuously transmitted in the frequency domain by receiving the E-REG for continuously transmitting the E-PDCCH in the frequency domain; in this case, the corresponding precoding process may include a terminal-specific channel characteristic. The first DMRS port is a dedicated DMRS port and is used for identifying that all E-REGs used for continuously transmitting the E-PDCCH in the frequency domain in one PRBpair are used for transmitting the E-PDCCH sent to the same terminal.

The specific implementation manner of the step 210 may be: receiving the E-PDCCH transmitted discontinuously in the frequency domain through the E-REG for transmitting the E-PDCCH discontinuously in the frequency domain at a second DMRS port; at this time, the corresponding precoding process does not include the channel characteristics specific to the terminal. The second DMRS port is a shared DMRS port and is used for identifying that all E-REGs used for frequency-domain discontinuous transmission of the E-PDCCH in one PRB pair can transmit the E-PDCCH sent to a plurality of terminals.

Wherein the first and second DMRS ports do not overlap on time-frequency resources.

The structure of the device for mapping resources on the E-PDCCH of the present invention is shown in fig. 10, and the specific implementation structure is as follows:

a time-frequency resource configuration module 1001, configured to configure, for a terminal, a time-frequency resource used for transmitting an E-PDCCH, where the time-frequency resource includes at least one class-a physical resource pair PRB pair, and such at least one class-a PRB pair includes an enhanced resource element group E-REG for frequency-domain continuous transmission of the E-PDCCH, and an E-REG for frequency-domain discontinuous transmission of the E-PDCCH;

a first resource mapping module 1002, configured to map an E-PDCCH requiring frequency domain continuous transmission to the E-REGs for frequency domain continuous transmission;

a second resource mapping module 1003, configured to map the E-PODCCH requiring frequency-domain discontinuous transmission to the E-REG for frequency-domain discontinuous transmission of the E-PDCCH.

The apparatus may be a network side device or an apparatus disposed in the network side device.

In the apparatus for resource mapping in E-PDCCH according to the embodiment of the present invention, at least one a-type physical resource pair PRB pair configured for a terminal and used for transmitting time-frequency resources of the E-PDCCH includes an enhanced resource element group E-REG for frequency-domain continuous transmission of the E-PDCCH, and an E-REG for frequency-domain discontinuous transmission of the E-PDCCH. Therefore, the definition of one PRB pair is not limited to one transmission mode, and the flexibility and the practicability of resource mapping are improved. In addition, E-REGs except for continuously transmitting the E-PDCCH in one PRB pair are used for discontinuously transmitting the E-PDCCH, so that the resource utilization rate is effectively improved.

In the network side device of the present invention, for the definition and description of the time-frequency resources, the E-REG numbers therein, the E-CCE ranks, the specific mapping manner of the E-PDCCH, and the like, reference may be made to the description of the network side method, which is not repeated herein.

The time-frequency resource configuration module 1001 may include a first E-CCE number determination submodule configured to determine a value of M.

The time-frequency resource configuration module 1001 may further include a resource configuration information sending sub-module, configured to notify the terminal of the determined value of M through a high-level signaling; or, the first E-CCE quantity determining sub-module is specifically configured to determine the value of M according to a rule agreed in advance with the terminal.

The time-frequency resource configuration module 1001 may further include a second E-CCE number determination sub-module, configured to determine the number of E-CCEs used for the frequency-domain discontinuous transmission E-PDCCH as

The time-frequency resource configuration module 1001 may further include a first E-REG numbering sub-module, configured to number the E-REGs according to the first manner described in the foregoing method; or, a second E-REG numbering sub-module, configured to number the E-REGs according to the second manner described in the foregoing method.

The network side apparatus provided in the foregoing embodiment of the present invention may further include:

a first resource transmission module, configured to transmit an E-PDCCH mapped to an E-REG for frequency-domain continuous transmission of the E-PDCCH through a first DMRS port;

a second resource transmission module, configured to transmit the E-PDCCH mapped to the E-REG for frequency-domain discontinuous transmission of the E-PDCCH through a second DMRS port; the first DMRS port and the second DMRS port do not overlap on a time-frequency resource.

The present invention further provides a device for resource mapping of E-PDCCH, the structure of which is shown in fig. 11, and the specific implementation structure is as follows:

a time-frequency resource receiving module 1101, configured to receive a time-frequency resource for transmitting the E-PDCCH, where the time-frequency resource includes at least one a-class PRB pair, and such at least one a-class PRB pair includes an enhanced resource element group E-REG for frequency-domain continuous transmission of the E-PDCCH, and an E-REG for frequency-domain discontinuous transmission of the E-PDCCH;

the time-frequency resource receiving module 1101 comprises a first E-PDCCH acquisition submodule 11011 and/or a second E-PDCCH acquisition submodule 11012;

a first E-PDCCH acquisition sub-module 11011 is configured to receive the E-PDCCH continuously transmitted in the frequency domain through the E-REG for continuously transmitting the E-PDCCH in the frequency domain;

the second E-PDCCH acquisition sub-module 11012 is configured to receive the frequency-domain discontinuous transmission E-PDCCH through the above-mentioned E-REG for frequency-domain discontinuous transmission E-PDCCH.

The device may be a terminal or a device disposed at a terminal.

According to the device for mapping the resources in the E-PDCCH, provided by the embodiment of the invention, at least one A-type physical resource pair PRB pair of the received time-frequency resources for transmitting the E-PDCCH comprises an enhanced resource element group E-REG for continuously transmitting the E-PDCCH in a frequency domain and an E-REG for discontinuously transmitting the E-PDCCH in the frequency domain. Therefore, the definition of one PRB pair is not limited to one transmission mode, and the flexibility and the practicability of resource mapping are improved. In addition, E-REGs except for continuously transmitting the E-PDCCH in one PRB pair are used for discontinuously transmitting the E-PDCCH, so that the resource utilization rate is effectively improved.

In the terminal side device of the present invention, for the definition and description of the time-frequency resources, the E-REG numbers therein, the E-CCE ranks, the specific mapping manner of the E-PDCCH, and the like, reference may be made to the description of the terminal side method, which is not repeated herein.

The terminal side apparatus may further include a first E-CCE number determining module, configured to determine a value of M.

The terminal side device may further include a resource configuration information receiving module, configured to receive a value of M determined by a network side device carried in a high-level signaling; or, the first E-CCE quantity determining module is specifically configured to determine the value of M according to a rule agreed in advance with the network side device.

The terminal side device may further include a second E-CCE number determining module, configured to determine the number of E-CCEs used for frequency-domain discontinuous transmission E-PDCCH as

The terminal side device may further include a first E-REG numbering module configured to encode the E-REG according to the first (first) manner provided by the method, or a second E-REG numbering module configured to encode the E-REG according to the second (second) manner provided by the method.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for resource mapping of an enhanced physical downlink control channel (E-PDCCH) is characterized in that time-frequency resources configured for a terminal and used for transmitting the E-PDCCH comprise at least one type-A physical resource pair PRB pair, wherein the type-A PRB pair comprises an enhanced resource element group (E-REG) used for frequency-domain continuous transmission of the E-PDCCH and an E-REG used for frequency-domain discontinuous transmission of the E-PDCCH, and the method comprises the following steps:

2. The method of claim 1, wherein:

mapping the E-PDCCH requiring the frequency domain continuous transmission to the E-REG for the frequency domain continuous transmission of the E-PDCCH, comprising:

mapping the E-PDCCH needing frequency domain continuous transmission to the E-REG for the frequency domain continuous transmission of the E-PDCCH by adopting a non-interleaving mode;

mapping the E-POCCH needing the frequency domain discontinuous transmission to the E-REG for the frequency domain discontinuous transmission E-PDCCH, comprising:

and mapping the E-POCCH needing the frequency domain discontinuous transmission to the E-REG for the frequency domain discontinuous transmission E-PDCCH by adopting an interleaving mode.

3. The method of claim 2, wherein in the class-a PRB pair, E-REGs other than E-REGs for frequency-domain continuous transmission of E-PDCCH are E-REGs for frequency-domain discontinuous transmission of E-PDCCH.

4. The method of claim 2, wherein all E-REGs for frequency-domain consecutive transmission of E-PDCCH in one class-a PRB pair of the time-frequency resource constitute an integer number of enhanced control channel elements, E-CCEs.

5. The method of claim 4, wherein the number of E-CCEs consisting of all E-REGs for frequency-domain consecutive transmission of E-PDCCH in the one A-type PRB pair is 2.

6. The method of claim 4, wherein the number of E-CCEs consisting of all E-REGs for frequency-domain consecutive transmission of E-PDCCH is the same in all the class-A PRBs of the time-frequency resource configured for the same terminal.

7. The method of any one of claims 4 to 6, further comprising:

informing the determined number of E-CCEs consisting of all E-REGs for continuously transmitting the E-PDCCH in the frequency domain in the A-type PRB pair to a terminal through high-level signaling;

or, determining the number of E-CCEs consisting of all E-REGs for continuously transmitting the E-PDCCH in the frequency domain in the one A-type PRB pair according to a rule predetermined with the terminal.

8. The method of claim 2, wherein the E-REGs of the E-PDCCH used for frequency-domain discontinuous transmission in all PRB pairs in the time-frequency resource constitute E-CCEs used for frequency-domain discontinuous transmission of the E-PDCCH.

9. The method of claim 8, wherein the number of E-CCEs used for frequency-domain discontinuous transmission (E-PDCCH) is equal to the number of E-CCEs used for frequency-domain discontinuous transmission (E-PDCCH) if there are B-type PRB pairs in the time-frequency resources that only contain E-REGs used for frequency-domain discontinuous transmission (E-PDCCH)Wherein

The number of E-REGs for frequency-domain discontinuous transmission E-PDCCH in all the A-type PRB pairs in the time-frequency resource,

and the number of E-REGs for frequency-domain discontinuous transmission of the E-PDCCH in all B-type PRB pairs in the time-frequency resource is K, and the number of E-REGs forming the E-CCE for frequency-domain discontinuous transmission of the E-PDCCH is K.

10. The method of any one of claims 1, 2, 3, 4, 5, 6, 8, 9, further comprising:

numbering E-REGs for E-REGs used for continuously transmitting the E-PDCCH in the frequency domain in all A types of PRB pairs of the time-frequency resources in a cascading manner according to the ascending order or the descending order of the frequency of the PRB pairs in the time-frequency resources;

E-REG numbering is carried out on E-REGs used for frequency domain discontinuous transmission E-PDCCH in all A types of PRB pair of the time-frequency resources in a cascading manner according to the ascending order or the descending order of the frequency of the PRB pair in the time-frequency resources;

E-REG numbering is carried out on E-REGs used for frequency domain discontinuous transmission E-PDCCH in all B types of PRB pairs of the time-frequency resources in a cascading manner according to the ascending order or the descending order of the frequency of the PRB pairs in the time-frequency resources;

cascading the numbers of E-REGs for frequency-domain discontinuous transmission of the E-PDCCH in all the A-type PRBs in the time-frequency resource with the numbers of the E-REGs for frequency-domain discontinuous transmission of the E-PDCCH in all the B-type PRBs;

or,

and numbering E-REGs for E-REGs used for frequency-domain discontinuous transmission of E-PDCCH in all A-type PRB pairs and B-type PRB pairs of the time-frequency resources in a cascading manner according to the ascending or descending frequency of the PRB pairs in the time-frequency resources.

11. The method of any one of claims 1, 2, 3, 4, 5, 6, 8, 9, further comprising:

transmitting the E-PDCCH mapped to the E-REG for frequency domain continuous transmission of the E-PDCCH through a first DMRS port;

transmitting the E-PDCCH mapped to the E-REG for frequency domain discontinuous transmission of the E-PDCCH through a second DMRS port;

the first and second DMRS ports do not overlap on time-frequency resources.

12. A method for resource mapping of an enhanced physical downlink control channel (E-PDCCH) is characterized by comprising the following steps:

13. The method of claim 12, wherein:

receiving the E-PDCCH transmitted continuously in the frequency domain through the E-REG for transmitting the E-PDCCH continuously in the frequency domain, comprising:

receiving the E-PDCCH transmitted continuously in the frequency domain through the E-REG for continuously transmitting the E-PDCCH in the frequency domain in a non-interleaving mode;

receiving the E-PDCCH for frequency-domain discontinuous transmission through the E-REG for frequency-domain discontinuous transmission of the E-PDCCH, comprising:

and receiving the E-PDCCH transmitted discontinuously in the frequency domain by the E-REG for transmitting the E-PDCCH discontinuously in the frequency domain in a de-interleaving mode.

14. The method of claim 13, wherein in the class-a PRB pair, E-REGs other than E-REGs for frequency-domain continuous transmission of E-PDCCH are E-REGs for frequency-domain discontinuous transmission of E-PDCCH.

15. The method of claim 13, wherein all E-REGs for frequency-domain consecutive transmission of E-PDCCH in one class-a PRB pair of the time-frequency resource constitute an integer number of enhanced control channel elements, E-CCEs.

16. The method of claim 15, wherein the number of E-CCEs consisting of all E-REGs used for frequency-domain consecutive transmission of E-PDCCH in the one class-a PRB pair is 2.

17. The method of claim 15, wherein the number of E-CCEs consisting of all E-REGs used for the frequency-domain continuous transmission of E-PDCCH is the same in all class-a PRB pairs of the received time-frequency resources.

18. The method of any one of claims 15 to 17, further comprising:

receiving the number of E-CCEs formed by all E-REGs used for continuously transmitting the E-PDCCH in the frequency domain in the A-type PRB pair, which is determined by network side equipment carried in high-layer signaling;

or, determining the number of E-CCEs formed by all E-REGs for continuously transmitting the E-PDCCH in the frequency domain in the A-type PRB pair according to a rule predetermined by the network side equipment.

19. The method of claim 13, wherein the E-REGs of the E-PDCCH for frequency-domain discontinuous transmission in all PRB pairs in the time-frequency resource constitute E-CCEs for frequency-domain discontinuous transmission of the E-PDCCH.

20. The method of claim 19, wherein the number of E-CCEs used for frequency-domain discontinuous transmission E-PDCCH is if there is a class B PRB pair in the time-frequency resource that contains only E-REGs for frequency-domain discontinuous transmission E-PDCCH

Wherein

21. The method of any one of claims 12, 13, 14, 15, 16, 17, 19, 20, further comprising:

or,

22. The method of any one of claims 12, 13, 14, 15, 16, 17, 19, 20, wherein:

receiving, at a first DMRS port, the E-PDCCH which is continuously transmitted in the frequency domain by receiving the E-REG for continuously transmitting the E-PDCCH in the frequency domain;

receiving, at a second DMRS port, the E-PDCCH for frequency-domain discontinuous transmission through the E-REG for frequency-domain discontinuous transmission of the E-PDCCH;

the first and second DMRS ports do not overlap on time-frequency resources.

23. An apparatus for resource mapping of an enhanced physical downlink control channel (E-PDCCH), comprising:

24. The apparatus of claim 23, wherein:

the first resource mapping module is specifically configured to map, in a non-interleaved manner, the E-PDCCH requiring frequency domain continuous transmission to the E-REG for frequency domain continuous transmission of the E-PDCCH;

the second resource mapping module is specifically configured to map, in an interleaving manner, the E-PODCCH that needs frequency-domain discontinuous transmission to the E-REG for frequency-domain discontinuous transmission of the E-PDCCH.

25. The apparatus of claim 24, wherein in the class-a PRB pair, E-REGs other than E-REGs for frequency-domain continuous transmission of E-PDCCH are E-REGs for frequency-domain discontinuous transmission of E-PDCCH.

26. The apparatus of claim 24, wherein all E-REGs for frequency-domain consecutive transmission of E-PDCCH in one class-a PRB pair of the time-frequency resource constitute an integer number of enhanced control channel elements, E-CCEs, the time-frequency resource configuration module further comprises a first E-CCE number determination submodule for determining a number of E-CCEs constituted by all E-REGs for frequency-domain consecutive transmission of E-PDCCH in the one class-a PRB pair.

27. The apparatus of claim 26, wherein the first E-CCE quantity determining submodule is specifically configured to determine that the number of E-CCEs formed by all E-REGs used for frequency-domain consecutive transmission of E-PDCCHs in the one class-a PRB pair is 2.

28. The apparatus of claim 26, wherein the first E-CCE number determining submodule is specifically configured to determine that the number of E-CCEs formed by all E-REGs for frequency-domain consecutive transmission of E-PDCCHs is the same in all class-a PRBpair of the time-frequency resource configured for the same terminal.

29. The apparatus of any one of claims 26 to 28, wherein the time-frequency resource configuration module further comprises a resource configuration information sending sub-module, configured to notify the determined number of E-CCEs, which are formed by all E-REGs used for frequency-domain continuous transmission of the E-PDCCH in the class-a PRBpair, to the terminal through a higher layer signaling;

or,

the first E-CCE quantity determining submodule is specifically configured to determine, according to a rule agreed in advance with a terminal, the number of E-CCEs formed by all E-REGs for frequency-domain continuous transmission of the E-PDCCH in the A-type PRB pair.

30. The apparatus of claim 24, wherein the E-REGs of the E-PDCCH for frequency-domain discontinuous transmission in all PRBpair in the time-frequency resource constitute E-CCEs for frequency-domain discontinuous transmission of the E-PDCCH.

31. The apparatus of claim 30, wherein if there are PRB pair types B in the time-frequency resources that contain only E-REGs for frequency-domain discontinuous transmission of E-PDCCH, the time-frequency resource configuration module further comprises:

a second E-CCE number determination submodule for determining the number of E-CCEs used for frequency-domain discontinuous transmission of the E-PDCCH asWherein

32. The apparatus of any one of claims 23, 24, 25, 26, 27, 28, 30, 31, wherein the time-frequency resource configuration module further comprises:

a first E-REG numbering sub-module, configured to number E-REGs in a cascaded manner for E-REGs used for frequency-domain continuous transmission of E-PDCCH in all A-type PRB pairs of the time-frequency resources according to the ascending or descending frequency of the PRB pairs in the time-frequency resources; E-REG numbering is carried out on E-REGs used for frequency domain discontinuous transmission E-PDCCH in all A types of PRB pair of the time-frequency resources in a cascading manner according to the ascending order or the descending order of the frequency of the PRB pair in the time-frequency resources; E-REG numbering is carried out on E-REGs used for frequency domain discontinuous transmission E-PDCCH in all B types of PRB pairs of the time-frequency resources in a cascading manner according to the ascending order or the descending order of the frequency of the PRB pairs in the time-frequency resources; cascading the numbers of E-REGs for frequency-domain discontinuous transmission of the E-PDCCH in all the A-type PRBs in the time-frequency resource with the numbers of the E-REGs for frequency-domain discontinuous transmission of the E-PDCCH in all the B-type PRBs;

or,

a second E-REG numbering sub-module, configured to number E-REGs in a cascaded manner for E-REGs used for frequency-domain continuous transmission of E-PDCCH in all A-type PRB pairs of the time-frequency resources according to the ascending or descending frequency of the PRB pairs in the time-frequency resources; and numbering E-REGs for E-REGs used for frequency-domain discontinuous transmission of E-PDCCH in all A-type PRB pairs and B-type PRB pairs of the time-frequency resources in a cascading manner according to the ascending or descending frequency of the PRB pairs in the time-frequency resources.

33. The apparatus of any one of claims 23, 24, 25, 26, 27, 28, 30, 31, further comprising:

a second resource transmission module, configured to transmit the E-PDCCH mapped to the E-REG for frequency-domain discontinuous transmission of the E-PDCCH through a second DMRS port; the first and second DMRS ports do not overlap on time-frequency resources.

34. An apparatus for resource mapping of an enhanced physical downlink control channel (E-PDCCH), comprising:

35. The apparatus of claim 34, wherein:

the first E-PDCCH acquisition sub-module is specifically used for receiving the E-PDCCH transmitted continuously in the frequency domain through the E-REG for continuously transmitting the E-PDCCH in the frequency domain in a non-interlaced mode;

the second E-PDCCH acquisition sub-module is specifically used for receiving the E-PDCCH which is discontinuously transmitted in the frequency domain through the E-REG which is used for discontinuously transmitting the E-PDCCH in the frequency domain in a de-interleaving mode.

36. The apparatus of claim 35, wherein in the class a PRB pair, E-REGs other than E-REGs for frequency-domain continuous transmission of E-PDCCH are E-REGs for frequency-domain discontinuous transmission of E-PDCCH.

37. The apparatus of claim 35, wherein all E-REGs for frequency-domain consecutive transmission of E-PDCCH in one class-a PRB pair of the time-frequency resources constitute an integer number of enhanced control channel elements, E-CCEs, the apparatus further comprising a first E-CCE number determining module for determining a number of E-CCEs constituted by all E-REGs for frequency-domain consecutive transmission of E-PDCCH in the one class-a PRB pair.

38. The apparatus of claim 37, wherein the number of E-CCEs consisting of all E-REGs used for frequency-domain consecutive transmission of E-PDCCH in the one class-a PRB pair is 2.

39. The apparatus of claim 37, wherein the number of E-CCEs formed by all E-REGs for frequency-domain consecutive transmission of E-PDCCH is the same in all class-a PRB pairs of the received time-frequency resources.

40. The apparatus according to any one of claims 37 to 39, wherein the apparatus further includes a resource configuration information receiving module, configured to receive the number of E-CCEs formed by all E-REGs used for frequency-domain continuous transmission of an E-PDCCH in the one A-type PRB pair, which is determined by a network side device carried in a higher layer signaling;

or,

the first E-CCE quantity determining module is specifically configured to determine, according to a rule predefined with a network side device, a number of E-CCEs formed by all E-REGs used for frequency-domain continuous transmission of the E-PDCCH in the a-type PRB pair.

41. The apparatus of claim 35, wherein the E-REGs of the E-PDCCH for frequency-domain discontinuous transmission in all PRB pairs in the time-frequency resource constitute E-CCEs for frequency-domain discontinuous transmission of the E-PDCCH.

42. The apparatus of claim 41, wherein if there is a type B PRB pair in the time-frequency resource that contains only E-REGs for frequency-domain discontinuous transmission of an E-PDCCH, the apparatus further comprises:

a second E-CCE number determination module for determining the number of E-CCEs used for frequency-domain discontinuous transmission of the E-PDCCH as

Wherein

43. The apparatus of any one of claims 34, 35, 36, 37, 38, 39, 41, 42, further comprising:

a first E-REG numbering module, configured to number E-REGs in a cascaded manner for E-REGs used for frequency-domain continuous transmission of E-PDCCH in all A-type PRB pairs of the time-frequency resources according to the ascending or descending frequency of the PRB pairs in the time-frequency resources; E-REG numbering is carried out on E-REGs used for frequency domain discontinuous transmission E-PDCCH in all A types of PRB pair of the time-frequency resources in a cascading manner according to the ascending order or the descending order of the frequency of the PRB pair in the time-frequency resources; E-REG numbering is carried out on E-REGs used for frequency domain discontinuous transmission E-PDCCH in all B types of PRB pairs of the time-frequency resources in a cascading manner according to the ascending order or the descending order of the frequency of the PRB pairs in the time-frequency resources; cascading the numbers of E-REGs for frequency-domain discontinuous transmission of the E-PDCCH in all the A-type PRBs in the time-frequency resource with the numbers of the E-REGs for frequency-domain discontinuous transmission of the E-PDCCH in all the B-type PRBs;

or,

a second E-REG numbering module, configured to number E-REGs in a cascaded manner for E-REGs used for frequency-domain continuous transmission of E-PDCCH in all A-type PRB pairs of the time-frequency resources according to the ascending or descending frequency of the PRB pairs in the time-frequency resources; and numbering E-REGs for E-REGs used for frequency-domain discontinuous transmission of E-PDCCH in all A-type PRB pairs and B-type PRB pairs of the time-frequency resources in a cascading manner according to the ascending or descending frequency of the PRB pairs in the time-frequency resources.

44. The apparatus of any one of claims 34, 35, 36, 37, 38, 39, 41, 42, wherein:

the first E-PDCCH acquisition sub-module is specifically configured to: receiving, at a first DMRS port, the E-PDCCH which is continuously transmitted in the frequency domain by receiving the E-REG for continuously transmitting the E-PDCCH in the frequency domain;

the second E-PDCCH acquisition sub-module is specifically configured to: receiving, at a second DMRS port, the E-PDCCH for frequency-domain discontinuous transmission through the E-REG for frequency-domain discontinuous transmission of the E-PDCCH; the first and second DMRS ports do not overlap on time-frequency resources.