CN106877978B

CN106877978B - Control channel detection method and device

Info

Publication number: CN106877978B
Application number: CN201710100056.8A
Authority: CN
Inventors: 陈艺戬; 戴博; 左志松; 李永
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2011-12-31
Filing date: 2011-12-31
Publication date: 2021-01-26
Anticipated expiration: 2031-12-31
Also published as: CN103188041B; CN106877978A; CN103188041A

Abstract

The invention provides a method and a device for detecting a control channel, wherein one method comprises the following steps: the terminal detects the control signaling according to different modes and determines the information of a control channel according to the control signaling; and the terminal carries out corresponding detection according to the information of the control channel. The invention overcomes the problem of low efficiency caused by more detection times of the control channel in the related technology, and improves the detection efficiency of the control channel.

Description

Control channel detection method and device

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for detecting a control channel.

Background

In a Long Term Evolution (LTE) system and an LTE-access system, a downlink physical layer control signaling includes DL Grant information related to downlink transmission that a terminal needs to know and UL Grant information related to uplink transmission that a UE needs to know, to indicate various transmission-related information such as a transmission resource position, a modulation and coding scheme, and the physical layer control signaling is transmitted on a physical layer control channel PDCCH. The physical layer control signaling here mainly refers to user-specific control signaling of the physical layer.

In Release 8/9 of the LTE system and R10 of the LTE-access system, a Physical Downlink Control channel (phy Control channel) for transmitting phy Control signaling is generally configured to be transmitted over the first N Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the N symbols are generally referred to as Control signaling transmission regions.

Available transmission resources of an existing control signaling transmission region (a first control signaling transmission region, a first control signaling region) are divided into a plurality of CCE (control channel element) resource units, resources occupied by control information are allocated in units of CCEs, a CCE herein may be further subdivided into a plurality of REGs, one CCE is composed of a plurality of discontinuous REGs, generally 9 REGs constitute one CCE, and further each REG is composed of a plurality of basic resource units.

The proprietary and public control signaling are transmitted by taking CCE as a resource unit. Then mapped to corresponding REG (RE Group) resources, and further mapped to (Resource element, abbreviated as RE) (minimum Resource unit) of a plurality of PRBs (physical Resource blocks). The terminal typically performs blind detection in the following manner: calculating the starting position of the proprietary control signaling and the public control signaling, here we mainly focus on the proprietary control signaling:

table: schematic table

It can be seen that the control signaling transmission resources allocated by the users are not continuous, which brings many difficulties to the implementation of the closed-loop precoding technique in the multi-antenna system, so that the control signaling region can only use the diversity technique and is difficult to use the closed-loop precoding technique. The main reason is that there is a great design difficulty in the demodulation pilot design and channel state information feedback of the first control signaling region, so the control signaling in the existing release only supports the discontinuous resource transmission and diversity technology.

In the later release than R10, in order to improve the transmission capacity of the control channel and support the control signaling of more users, a new control channel region (a second control signaling transmission region, a second control signaling region) is designed and opened, fig. 1 is a schematic diagram of the control signaling region of the new and old release of the related art, and the control signaling transmission resource of the same UE may be a continuous time-frequency resource to support the closed-loop precoding technique, thereby improving the transmission performance of the control information.

The method allocates partial transmission resources to a new control signaling transmission region in the original PDSCH transmission region of R8/9/10, so that the closed-loop precoding technology can be supported during control signaling transmission, the control signaling capacity is improved, and the control signaling of more users is supported.

The following describes some control channel detection methods in terms of resource granularity detection, pilot port detection, transmission mode detection, modulation mode detection, and the like.

Generally, because no additional information informs the terminal of how much transmission resources will be occupied by the coded and modulated control information, the base station and the terminal may agree on several sizes of occupied resources, the base station may transmit the coded and modulated control information with one of the sizes, and the terminal may blindly detect the agreed several sizes of resources. Generally, a basic resource unit eCCE (enhanced control channel element) is defined, which is similar to the function of the previous CCE, and the eCCE may borrow the definition of the old CCE or slightly modify the definition in the second control region, or may perform a new definition. Then, the control signaling may define different aggregation levels, such as 1,2,4,8, or 1,2,4 or 1,3,5,7, etc., based on the eCCE. Different aggregation levels represent different resource sizes. The terminal can also detect the aggregation levels blindly in a targeted manner. In the second control signaling transmission region, the dedicated demodulation pilot (DMRS) in R10 can be reused to demodulate the control signaling, and the precoding technology is well supported. The DMRS is also referred to as UE Specific RS, and the main function is to demodulate control signaling or data, specifically, demodulation of downlink control signaling information. In the old version, the demodulation design mainly aims at data information, 8 corresponding DMRS ports exist, the maximum support is 8 layers, and the ports are 7-14 respectively. The second control signaling region typically uses only 4 ports for demodulation of control signaling, Port 7-10.

The description will be made in the application of the conventional method. Fig. 2 is a diagram illustrating a first resource division and port mapping relationship in an RB according to the related art, and as shown in fig. 2, the first mapping relationship has a problem in that the pilot port is not flexible enough to coordinate between cells or transmission nodes. And MU-MIMO is not flexible, fig. 3 is a schematic diagram of a second mapping relationship between resource allocation and ports in an RB of the related art, and as shown in fig. 3, although blind detection by introducing multiple ports for all cases can be flexible, blind detection complexity is increased.

The second control signaling region may also introduce more new characteristics, such as new modulation schemes, in order to ensure robustness, the control channel PDCCH transmitted in the first control region in the old release only supports the QPSK modulation scheme, but due to the development of MIMO technology, the feedback-based closed-loop MIMO may already support the 16QAM scheme better, and in addition, for the UE with a better partial channel environment, the UE may also conditionally support 16QAM or even 64 QAM. One consideration is therefore that introducing a modulation scheme of 16QAM may even consider introducing 64 QAM.

In the prior art, two modulation schemes are always detected for all detections of the second control signaling region: QPSK and 16QAM, or QPSK,16QAM,64 QAM and so on, the number of blind detections is doubled or doubled relative to the case of detecting only one.

The second control signaling transmission region can also support the transmission diversity technology, and although the first control signaling transmission region can already support the diversity technology, the second control signaling transmission region is also a direction which can be considered because the second control signaling transmission region can better perform interference coordination between cells. The transmission can be made in a diversity region of the first control signaling region transmission region or the second control signaling region if the terminal desires diversity.

Aiming at the problem of low efficiency caused by more times of methods for detecting control channels in the related art, no effective solution is provided at present.

Disclosure of Invention

The invention provides a method and a device for detecting a control channel, aiming at the problems of lower efficiency, higher complexity and increased terminal cost caused by more times of methods for detecting the control channel in the related art, and aims to solve the problems.

According to an aspect of the present invention, there is provided a method for detecting a control channel, the method including: the terminal detects the control signaling according to different modes and determines the information of a control channel according to the control signaling; and the terminal carries out corresponding detection according to the information of the control channel.

Optionally, when the terminal detects the control signaling according to a transmission technology mode adopted by the control channel to be detected in the blind detection, determining the information of the control channel according to the control signaling includes: and the terminal determines the number and/or the type of the modulation modes for detecting the control channel corresponding to the transmission technology needing blind detection according to the corresponding relation between the transmission technology and the number and/or the type of the modulation modes for blind detection of the control channel.

Optionally, the performing, by the terminal, corresponding detection according to the information of the control channel includes: and the terminal uses the transmission technology and the number and/or the type of the modulation modes corresponding to the transmission technology to carry out joint detection on the control channel.

Optionally, the number and/or the kind of modulation modes for detecting the control channel corresponding to the transmission technology of the blind detection are different.

Optionally, the corresponding relationship is configured through a radio resource control RRC signaling of a higher layer, and the corresponding relationship includes one of: the transmission technology is a diversity technology, and the modulation mode corresponding to the control channel is Quadrature Phase Shift Keying (QPSK); the transmission technology is a pre-coding transmission technology based on exclusive demodulation pilot frequency demodulation, and the modulation mode corresponding to the control channel is QPSK and/or 16 Quadrature Amplitude Modulation (QAM).

Optionally, when the terminal detects the control signaling according to the aggregation level, determining the information of the control channel according to the control signaling includes: the method comprises the steps that a terminal obtains N aggregation levels corresponding to a control channel to be detected, and the aggregation levels are numbered from 1 to N, wherein N is a natural number greater than 1; and the terminal determines the modulation mode number and/or the type of the control channel corresponding to the N aggregation levels to be detected respectively according to the corresponding relation between the N aggregation levels and the modulation mode number and/or the type of the control channel to be detected respectively.

Optionally, the performing, by the terminal, corresponding detection according to the information of the control channel includes: and the terminal performs joint detection on the N aggregation levels to be detected and the number and/or the type of the modulation modes respectively corresponding to the N aggregation levels.

Optionally, in the N aggregation levels, at least two different aggregation levels have different numbers and/or types of modulation modes corresponding to the different aggregation levels.

Optionally, the corresponding relationship is configured through a radio resource control RRC signaling of a higher layer, where the corresponding relationship is one of the following:

the aggregation level corresponds to 1 eCCE, and the modulation mode is quadrature phase shift keying QPSK and/or 16 quadrature amplitude modulation QAM;

the aggregation level corresponds to 2 eCCEs, and the modulation mode is quadrature phase shift keying QPSK and/or 16 quadrature amplitude modulation QAM;

the aggregation level corresponds to 4 eCCEs, and the modulation mode is QPSK and/or 16 quadrature amplitude modulation QAM;

the aggregation level corresponds to 8 eCCEs, and the modulation mode is QPSK.

Optionally, when the terminal detects the control signaling according to the transmission technology adopted by the blind detected control channel, determining the information of the control channel according to the control signaling includes:

the terminal determines the aggregation level of the control channel to be detected, which corresponds to the transmission technology, according to the corresponding relation between the transmission technology and the aggregation level corresponding to the control channel to be detected;

and the terminal detects the control channel according to the aggregation level corresponding to the transmission technology.

Optionally, the aggregation levels corresponding to different transmission technologies are different, including: the different aggregation levels corresponding to different transmission technologies refer to: the number of aggregation levels corresponding to different transmission technologies is different; or the number of aggregation levels corresponding to different transmission technologies is the same and the aggregation levels include different kinds.

Optionally, the correspondence is one of: the transmission technology is a diversity technology, the corresponding aggregation level is A, the transmission technology based on the exclusive demodulation pilot frequency demodulation is B, wherein A is larger than B; the transmission technology is a diversity technology, the corresponding aggregation level is C, the transmission technology is a transmission technology based on exclusive demodulation pilot frequency demodulation, and the corresponding aggregation level is C, wherein the aggregation level corresponding to the diversity technology comprises different types from the aggregation level corresponding to the transmission technology based on exclusive demodulation pilot frequency demodulation;

the transmission technology is an open-loop precoding technology, the corresponding aggregation levels are D types, the transmission technology is a transmission technology based on exclusive demodulation pilot frequency demodulation, the corresponding aggregation levels are E types, and D is larger than E;

the transmission technology is an open-loop precoding technology, the corresponding aggregation level is F, the transmission technology based on the exclusive demodulation pilot frequency demodulation is adopted, the corresponding aggregation level is E, wherein the type of the aggregation level corresponding to the open-loop precoding technology is different from the type of the aggregation level corresponding to the transmission technology based on the exclusive demodulation pilot frequency demodulation.

According to another aspect of the present invention, there is provided an apparatus for detecting a control channel, the apparatus being applied to a terminal, the apparatus including: a module for detecting control signaling according to different modes and determining information of a control channel according to the control signaling; and the module is used for carrying out corresponding detection according to the information of the control channel.

Optionally, the apparatus comprises: a second determining module, configured to determine a transmission technology used by the control channel to be detected for blind detection; a third determining module, configured to determine, according to a correspondence between the transmission technology and the number and/or type of modulation schemes for blind detection of the control channel, the number and/or type of modulation schemes for detecting the control channel corresponding to the transmission technology requiring blind detection; and the second detection module is used for carrying out joint detection on the control channel by using the transmission technology and the number and/or the type of the modulation modes corresponding to the transmission technology.

Optionally, the apparatus comprises: the device comprises an acquisition module, a detection module and a detection module, wherein the acquisition module is used for acquiring N aggregation levels corresponding to a control channel to be detected, and the number of the aggregation levels is 1 to N, wherein N is a natural number greater than 1; a fourth determining module, configured to determine, according to correspondence between the N aggregation levels and modulation mode numbers and/or types of the control channels to be detected, modulation mode numbers and/or types of the control channels corresponding to the N aggregation levels to be detected, respectively; and the third detection module is used for carrying out joint detection on the N aggregation levels to be detected and the number and/or the type of the modulation modes corresponding to the N aggregation levels respectively.

Optionally, the apparatus comprises: a fifth determining module, configured to determine a transmission technology used by a control channel that needs blind detection; a sixth determining module, configured to determine, according to a correspondence between the transmission technology and an aggregation level corresponding to the detection of the control channel, an aggregation level of the control channel that needs to be detected and corresponds to the transmission technology; a fourth detection module, configured to detect the control channel using the aggregation level corresponding to the transmission technology.

According to another aspect of the present invention, there is provided a control channel detection apparatus, applied to a terminal, including: a first determining module, configured to determine, by a terminal, a correspondence between a sub-resource block in a resource block to be detected and a DMRS port or a DMRS port Group used by the terminal, where the correspondence is determined by the terminal according to an aggregation level or a size of a sub-resource block in a resource block allocated to the terminal; and the first detection module is used for detecting the control channel according to the corresponding relation.

According to another aspect of the present invention, there is provided a control channel detection apparatus, applied to a terminal, including: a second determining module, configured to determine a transmission technology used by the control channel to be detected for blind detection; a third determining module, configured to determine, according to a correspondence between the transmission technology and the number and/or type of modulation schemes for blind detection of the control channel, the number and/or type of modulation schemes for detecting the control channel corresponding to the transmission technology requiring blind detection; and the second detection module is used for carrying out joint detection on the control channel by using the transmission technology and the number and/or the type of the modulation modes corresponding to the transmission technology.

According to another aspect of the present invention, there is provided a control channel detection apparatus, applied to a terminal, including: the device comprises an acquisition module, a detection module and a detection module, wherein the acquisition module is used for acquiring N aggregation levels corresponding to a control channel to be detected, and the number of the aggregation levels is 1 to N, wherein N is a natural number greater than 1; a fourth determining module, configured to determine, according to correspondence between the N aggregation levels and modulation mode numbers and/or types of the control channels to be detected, modulation mode numbers and/or types of the control channels corresponding to the N aggregation levels to be detected, respectively; and the third detection module is used for carrying out joint detection on the N aggregation levels to be detected and the number and/or the type of the modulation modes corresponding to the N aggregation levels respectively.

According to another aspect of the present invention, there is provided a control channel detection apparatus, applied to a terminal, including: a fifth determining module, configured to determine a transmission technology used by a control channel that needs blind detection; a sixth determining module, configured to determine, according to a correspondence between the transmission technology and an aggregation level corresponding to the detection of the control channel, an aggregation level of the control channel that needs to be detected and corresponds to the transmission technology; a fourth detection module, configured to detect the control channel using the aggregation level corresponding to the transmission technology.

According to another aspect of the present invention, there is provided a control channel detection apparatus, applied to a terminal, including: a seventh determining module, configured to determine, according to a correspondence between a transmission region of the control signaling and a modulation mode, a modulation mode that needs blind detection and corresponds to the transmission region during blind detection; and the fifth detection module is used for carrying out blind detection on the control signaling of the transmission area according to the modulation mode.

According to the invention, the terminal detects the control signaling according to different modes and determines the information of the control channel according to the control signaling; the terminal carries out corresponding detection according to the information of the control channel, overcomes the problem of low efficiency caused by more detection times of the control channel in the related technology, and improves the efficiency of the control channel detection.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a schematic diagram of a control signaling region of a related art new and old version;

FIG. 2 is a diagram illustrating a first resource partitioning and port mapping relationship within an RB according to the related art;

FIG. 3 is a diagram illustrating a second related art resource partitioning and port mapping relationship within an RB;

fig. 4 is a first flowchart of a control channel detection method according to an embodiment of the present invention;

FIG. 5 is a second flowchart of a method of detection of a control channel according to an embodiment of the present invention;

FIG. 6 is a third flowchart of a method of detection of a control channel according to an embodiment of the present invention;

fig. 7 is a fourth flowchart of a control channel detection method according to an embodiment of the present invention;

fig. 8 is a fifth flowchart of a control channel detection method according to an embodiment of the present invention;

fig. 9 is a first configuration diagram of a detection apparatus of a control channel according to an embodiment of the present invention;

fig. 10 is a second structural view of a control channel detection apparatus according to an embodiment of the present invention;

FIG. 11 is a third structural diagram of a detection apparatus of a control channel according to an embodiment of the present invention;

fig. 12 is a fourth structural view of a detection apparatus of a control channel according to an embodiment of the present invention;

fig. 13 is a fifth structural view of a detection apparatus of a control channel according to an embodiment of the present invention;

fig. 14 is a sixth flowchart of a control channel detection method according to an embodiment of the present invention;

fig. 15 is a sixth structural view of a control channel detection apparatus according to an embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Example 1

The present embodiment provides a method for detecting a control channel, and fig. 4 is a first flowchart of a method for detecting a control channel according to an embodiment of the present invention, and the method includes steps S402 and S404 as follows.

Step S402: a terminal determines the corresponding relation between a sub-resource block in a resource block to be detected and a demodulation reference signal port (DMRS port) or a demodulation reference signal port Group (DMRS port Group) used by the terminal, wherein the corresponding relation is determined by the terminal according to the aggregation level or the size of the sub-resource block in the resource block allocated by the terminal;

step S404: and the terminal detects the control channel according to the corresponding relation.

Through the steps, the terminal determines the corresponding relation between the sub-resource blocks in the resource blocks to be detected and the DMRS port or the DMRS port Group used by the terminal, and detects the control channel according to the corresponding relation, so that the problem of low efficiency caused by more detection times of the control channel in the related technology is solved, and the detection efficiency of the control channel is improved.

As a preferred embodiment, the step S402 may use various embodiments to determine the corresponding relationship, and preferably, the corresponding relationship between the sub-resource blocks in the resource blocks and the DMRS port may be indicated by a Radio Resource Control (RRC) signaling of a higher layer when different aggregation levels or different sub-resource block sizes in the allocated resource blocks are indicated.

As another preferred embodiment, the correspondence corresponding to different aggregation levels is different.

The present embodiment provides a method for detecting a control channel, and fig. 5 is a second flowchart of the method for detecting a control channel according to the embodiment of the present invention, which includes the following steps S502 to S506.

Step S502: the terminal determines a transmission technology adopted by a control channel required to be detected by blind detection;

step S504: the terminal determines the number and/or the type of the modulation modes for detecting the control channel corresponding to the transmission technology needing blind detection according to the corresponding relation between the transmission technology and the number and/or the type of the modulation modes for blind detection of the control channel;

step S506: and the terminal uses the transmission technology and the number and/or the type of the modulation modes corresponding to the transmission technology to carry out joint detection on the control channel.

Through the steps, the terminal determines the number and/or the type of the modulation modes for detecting the control channel corresponding to the transmission technology needing blind detection according to the corresponding relation between the transmission technology and the number and/or the type of the modulation modes for blind detection of the control channel, and performs combined detection on the control channel by using the transmission technology and the number and/or the type of the modulation modes corresponding to the transmission technology, so that the problem of low efficiency caused by more detection times of the control channel in the related technology is solved, and the detection efficiency of the control channel is improved.

As a preferred embodiment, the number and/or types of modulation schemes for detecting the control channel corresponding to the different transmission technologies requiring blind detection may be different.

As a preferred embodiment, the correspondence relationship may be configured through Radio Resource Control (RRC) signaling of a higher layer.

In implementation, a corresponding modulation scheme may be set according to a transmission technology, and as a preferred implementation, the corresponding relationship may be one of the following: the transmission technology is a diversity technology, and the modulation mode corresponding to the control channel is Quadrature Phase Shift Keying (QPSK); the transmission technology is based on DMRS demodulation and coding technology, and the modulation mode corresponding to the control channel is QPSK and/or 16 Quadrature Amplitude Modulation (QAM). By presetting the corresponding relation between the transmission technology and the modulation mode, the signaling consumption in the configuration process is reduced, and the configuration efficiency is improved.

The present embodiment provides a method for detecting a control channel, and fig. 6 is a third flowchart of a method for detecting a control channel according to an embodiment of the present invention, which includes steps S602 to S606 as follows.

Step S602: the terminal acquires the aggregation level corresponding to the control channel to be detected, wherein the aggregation level is numbered from 1 to N, and N is a natural number greater than 1.

Step S604: and the terminal determines the modulation mode number and/or the type of the control channel corresponding to the N aggregation levels to be detected respectively according to the corresponding relation between the N aggregation levels and the modulation mode number and/or the type of the control channel to be detected respectively.

Step S606: and the terminal performs joint detection on the N aggregation levels to be detected and the number and/or the type of the modulation modes respectively corresponding to the N aggregation levels.

Through the steps, the terminal determines the number and/or the type of the modulation modes of the control channel, which are respectively corresponding to the N aggregation levels to be detected, according to the corresponding relation between the N aggregation levels and the number and/or the type of the modulation modes of the control channel, and performs combined detection on the number and/or the type of the modulation modes, which are respectively corresponding to the N aggregation levels to be detected, so that the problem of low efficiency caused by more detection times of the control channel in the related technology is solved, and the efficiency of detecting the control channel is improved.

As a preferred embodiment, among the N aggregation levels, there may be at least two different aggregation levels with different numbers and/or types of modulation schemes.

As a preferred embodiment, the correspondence relationship may be configured by Radio Resource Control (RRC) signaling of a higher layer.

In implementation, multiple modulation modes can be configured according to the aggregation level, and preferably, a correspondence relationship of one of the modes can be adopted: the aggregation level corresponds to 1 eCCE, and the modulation mode is Quadrature Phase Shift Keying (QPSK) and/or 16 Quadrature Amplitude Modulation (QAM); the aggregation level corresponds to 2 eCCEs, and the modulation mode is Quadrature Phase Shift Keying (QPSK) and/or 16 Quadrature Amplitude Modulation (QAM); the aggregation level corresponds to 4 eCCEs, and the modulation mode is QPSK and/or 16 Quadrature Amplitude Modulation (QAM); the aggregation level corresponds to 8 ecces, and the modulation scheme is QPSK. By presetting the corresponding relation between the aggregation level and the modulation mode, the signaling consumption in the configuration process is reduced, and the configuration efficiency is improved.

The present embodiment provides a method for detecting a control channel, and fig. 7 is a fourth flowchart of the method for detecting a control channel according to the embodiment of the present invention, and the method includes steps S702 to S706 as follows.

Step S702: the terminal determines a transmission technology adopted by a control channel needing blind detection;

step S704: the terminal determines the aggregation level of the control channel to be detected, which corresponds to the transmission technology, according to the corresponding relation between the transmission technology and the aggregation level corresponding to the detection of the control channel;

step S706: and the terminal detects the control channel according to the aggregation level corresponding to the transmission technology.

Through the steps, the terminal determines the aggregation level of the control channel to be detected corresponding to the transmission technology according to the corresponding relation between the transmission technology and the aggregation level corresponding to the detection of the control channel, and detects the control channel according to the aggregation level corresponding to the transmission technology, so that the problem of low efficiency caused by more detection times of the control channel in the related technology is solved, and the detection efficiency of the control channel is improved.

As a preferred embodiment, the aggregation levels corresponding to different transmission technologies may be different.

As a preferred embodiment, the difference of the aggregation levels corresponding to the different transmission technologies may be: the number of aggregation levels corresponding to different transmission technologies is different; or the number of aggregation levels corresponding to different transmission technologies is the same and the aggregation levels include different kinds.

In implementation, different aggregation levels may be set according to different diversity techniques, and preferably, a correspondence relationship in one of the following manners may be adopted: the transmission technology is a diversity technology, the corresponding aggregation level is A, the transmission technology based on DMRS demodulation is B, wherein A is larger than B; the transmission technology is a diversity technology, the corresponding aggregation level is C, the transmission technology is a transmission technology based on DMRS demodulation, and the corresponding aggregation level is C, wherein the type of the aggregation level corresponding to the diversity technology is different from the type of the aggregation level corresponding to the transmission technology based on DMRS demodulation; the transmission technology is an open-loop precoding technology, the corresponding aggregation level is D types, the transmission technology is a transmission technology based on DMRS demodulation, the corresponding aggregation level is E types, and D is smaller than E; the transmission technology is an open-loop precoding technology, the corresponding aggregation levels are F types, the transmission technology based on DMRS demodulation is adopted, and the corresponding aggregation levels are E types, wherein the types of the aggregation levels corresponding to the open-loop precoding technology are different from the types of the aggregation levels corresponding to the transmission technology based on DMRS demodulation. By presetting the corresponding relation between the transmission technology and the aggregation level, the signaling consumption in the configuration process is reduced, and the configuration efficiency is improved.

The present embodiment provides a method for detecting a control channel, and fig. 8 is a fifth flowchart of a method for detecting a control channel according to an embodiment of the present invention, where the method includes steps S802 to S804 as follows.

Step S802, the terminal determines the modulation mode which corresponds to the transmission region and needs blind detection in the blind detection according to the corresponding relation between the transmission region and the modulation mode of the control signaling;

step S804, when the terminal performs blind detection on the control channel, the terminal performs detection in the transmission region by using a modulation scheme corresponding to the transmission region.

Through the steps, the terminal determines the modulation mode corresponding to the transmission region and needing blind detection in the blind detection according to the corresponding relation between the transmission region and the modulation mode of the control signaling, and detects the transmission region by using the modulation mode corresponding to the transmission region in the blind detection of the control channel, so that the problem of low efficiency caused by more detection times of the control channel in the related technology is solved, and the detection efficiency of the control channel is improved

As a preferred embodiment, the modulation schemes corresponding to different transmission regions may be different, where the difference in the modulation schemes may include: the number of modulation modes is different and/or the type of modulation modes is different.

In an implementation, the transmission region may include a first region and/or a second region, where the first region may be: a first control signaling region and a second control signaling region, the second region may be a second control region; the first region may be: the second control signaling region is a transmission diversity region, and the second region can be a precoding technology region based on DMRS demodulation in the second control signaling region.

It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.

In another embodiment, there is also provided software for a detection apparatus of a control channel, which is used to implement the technical solutions described in the above embodiments and the preferred embodiments.

In another embodiment, a storage medium is provided, in which the software of the detection apparatus for the control channel is stored, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.

The embodiment of the present invention further provides a detection apparatus for a control channel, where the detection apparatus for a control channel may be used to implement the detection method for a control channel and the preferred embodiment, which have been described and are not described again, and the following describes modules involved in the detection apparatus for a control channel. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the systems and methods described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

Fig. 9 is a first configuration diagram of an apparatus for detecting a control channel according to an embodiment of the present invention, which can be applied to a terminal, as shown in fig. 9, the apparatus including: a first determination module 92 and a first detection module 94, the above structure of which is described in detail below.

A first determining module 92, configured to determine a correspondence between a sub-resource block in a resource block to be detected and a demodulation reference signal port (DMRS port) or a demodulation reference signal port Group (DMRS port Group) used by the terminal, where the correspondence is determined by the terminal according to an aggregation level or a size of the sub-resource block in the resource block allocated by the terminal; and a first detection module 94, connected to the first determination module 92, for detecting the control channel according to the correspondence determined by the first determination module 92.

Fig. 10 is a second structural diagram of a control channel detection apparatus according to an embodiment of the present invention, which can be applied to a terminal, as shown in fig. 10, the apparatus including: a second determining module 1002, a third determining module 1004, and a second detecting module 1006, which are described in detail below.

A second determining module 1002, configured to determine a transmission technology used for blind detection of a control channel to be detected; a third determining module 1004, connected to the second determining module 1002, configured to determine, according to the correspondence between the transmission technology determined by the second determining module 1002 and the modulation scheme number and/or category of the blind detection control channel, the modulation scheme number and/or category of the detection control channel corresponding to the transmission technology that needs blind detection; a second detecting module 1006, connected to the third determining module 1004, is configured to perform joint detection on the control channel by using the number and/or kind of modulation schemes determined by the third determining module 1004.

Fig. 11 is a third structural diagram of a detection apparatus of a control channel according to an embodiment of the present invention, which can be applied to a terminal, as shown in fig. 11, the apparatus including: an obtaining module 1102, a fourth determining module 1104 and a third detecting module 1106, which are described in detail below.

An obtaining module 1102, configured to obtain N aggregation levels corresponding to a control channel to be detected, where the aggregation levels are numbered from 1 to N, where N is a natural number greater than 1; a fourth determining module 1104, connected to the obtaining module 1102, configured to determine, according to the correspondence between the N aggregation levels obtained by the obtaining module 1102 and the modulation mode number and/or type of the control channel to be detected, the modulation mode number and/or type of the control channel corresponding to the N aggregation levels to be detected, respectively; a third detecting module 1106, connected to the fourth determining module 1104, is configured to perform joint detection on the number and/or types of modulation schemes respectively corresponding to the N aggregation levels and the N aggregation levels that need to be detected, which are determined by the fourth determining module 1104.

Fig. 12 is a fourth structural view of a control channel detection apparatus according to an embodiment of the present invention, which can be applied to a terminal, as shown in fig. 12, the apparatus including: a fifth determining module 1202, a sixth determining module 1204, and a fourth detecting module 1206, which are described in detail below.

A fifth determining module 1202, configured to determine a transmission technology used by a control channel that needs blind detection; a sixth determining module 1204, connected to the fifth determining module 1202, configured to determine, according to a correspondence between the transmission technology determined by the fifth determining module 1202 and the aggregation level corresponding to the detection of the control channel, the aggregation level of the control channel that needs to be detected and corresponds to the transmission technology; a fourth detecting module 1206, connected to the sixth determining module 1204, is configured to detect the control channel by using the aggregation level determined by the sixth determining module 1204 corresponding to the transmission technology.

Fig. 13 is a fifth structural view of a control channel detection apparatus according to an embodiment of the present invention, which can be applied to a terminal, as shown in fig. 13, the apparatus including: the seventh determining module 1302 and the fifth detecting module 1304 are described in detail below.

A seventh determining module 1302, configured to determine, according to a correspondence between a transmission region of the control signaling and a modulation mode, a modulation mode that needs blind detection and corresponds to the transmission region during blind detection; a fifth detecting module 1304, connected to the seventh determining module 1302, configured to perform blind detection on the control signaling of the transmission region according to the modulation scheme determined by the seventh determining module 1302.

Example 2

According to an aspect of the present invention, the present embodiment provides a method for detecting a control channel, and fig. 14 is a sixth flowchart of the method for detecting a control channel according to the embodiment of the present invention, including:

s1402, the terminal detects the control signaling according to different modes and determines the information of the control channel according to the control signaling;

and S1404, the terminal performs corresponding detection according to the information of the control channel.

Optionally, when the terminal detects the control signaling according to a transmission technology mode adopted by the control channel to be detected in the blind detection, determining the information of the control channel according to the control signaling includes: and the terminal determines the modulation mode number and/or type of the detection control channel corresponding to the transmission technology needing blind detection according to the corresponding relation between the transmission technology and the modulation mode number and/or type of the blind detection control channel.

Optionally, the performing, by the terminal, corresponding detection according to the information of the control channel includes: the terminal uses the transmission technology and the number and/or the type of the modulation modes corresponding to the transmission technology to carry out the joint detection on the control channel.

Optionally, the modulation modes and/or types of the detection control channels corresponding to the transmission technology of blind detection are different.

Optionally, configuring a corresponding relationship through a radio resource control RRC signaling of a higher layer, where the corresponding relationship includes one of: the transmission technology is a diversity technology, and the modulation mode corresponding to the control channel is quadrature phase shift keying QPSK; the transmission technology is a precoding transmission technology based on exclusive demodulation pilot frequency demodulation, and the modulation mode corresponding to the control channel is QPSK and/or 16 Quadrature Amplitude Modulation (QAM).

Optionally, when the terminal detects the control signaling according to the aggregation level, determining the information of the control channel according to the control signaling includes: the method comprises the steps that a terminal obtains N aggregation levels corresponding to a control channel to be detected, and the aggregation levels are numbered from 1 to N, wherein N is a natural number greater than 1; and the terminal determines the modulation mode number and/or type of the control channel corresponding to the N aggregation levels to be detected respectively according to the corresponding relation between the N aggregation levels and the modulation mode number and/or type of the control channel to be detected respectively.

Optionally, in the N aggregation levels, at least two different aggregation levels have different numbers and/or types of modulation modes corresponding to them.

Optionally, the corresponding relationship is configured through a radio resource control RRC signaling of a higher layer, and the corresponding relationship may be, but is not limited to: the aggregation level corresponds to 1 eCCE, and the modulation mode is quadrature phase shift keying QPSK and/or 16 quadrature amplitude modulation QAM; the aggregation level corresponds to 2 eCCEs, and the modulation mode is quadrature phase shift keying QPSK and/or 16 quadrature amplitude modulation QAM; the aggregation level corresponds to 4 eCCEs, and the modulation mode is QPSK and/or 16 quadrature amplitude modulation QAM; the aggregation level corresponds to 8 eCCEs, and the modulation mode is QPSK.

the terminal determines the aggregation level of the control channel to be detected corresponding to the transmission technology according to the corresponding relation between the transmission technology and the aggregation level corresponding to the detection control channel; and the terminal detects the control channel according to the aggregation level corresponding to the transmission technology.

Optionally, the correspondence is one of: the transmission technology is diversity technology, the corresponding aggregation level is A, the transmission technology is based on the transmission technology of exclusive demodulation pilot frequency demodulation and is B, wherein A is larger than B; the transmission technology is a diversity technology, the corresponding aggregation level is C, the transmission technology is a transmission technology based on exclusive demodulation pilot frequency demodulation, and the corresponding aggregation level is C, wherein the type of the aggregation level corresponding to the diversity technology is different from the type of the aggregation level corresponding to the transmission technology based on exclusive demodulation pilot frequency demodulation;

the transmission technology is an open-loop precoding technology, the corresponding aggregation level is D, the transmission technology is a transmission technology based on exclusive demodulation pilot frequency demodulation, the corresponding aggregation level is E, and D is larger than E;

the transmission technology is an open-loop precoding technology, the corresponding aggregation level is F, the transmission technology based on the exclusive demodulation pilot frequency demodulation is adopted, the corresponding aggregation level is E, and the type of the aggregation level corresponding to the open-loop precoding technology is different from the type of the aggregation level corresponding to the transmission technology based on the exclusive demodulation pilot frequency demodulation.

Fig. 15 is a sixth structural view of a control channel detection apparatus according to an embodiment of the present invention, applied to a terminal, the apparatus including:

a first determining module 1502, configured to detect a control signaling according to different manners, and determine information of a control channel according to the control signaling;

a first detecting module 1504, configured to perform corresponding detection according to the information of the control channel.

Optionally, the apparatus comprises: a second determining module, configured to determine a transmission technology used by the control channel to be detected for blind detection; a third determining module, configured to determine, according to a correspondence between a transmission technology and the number and/or type of modulation schemes of the blind detection control channel, the number and/or type of modulation schemes of the detection control channel corresponding to the transmission technology that needs blind detection; and the second detection module is used for carrying out joint detection on the control channel by using the transmission technology and the number and/or the type of the modulation modes corresponding to the transmission technology.

Optionally, the apparatus comprises: the device comprises an acquisition module, a detection module and a detection module, wherein the acquisition module is used for acquiring N aggregation levels corresponding to a control channel to be detected, and the number of the aggregation levels is 1 to N, wherein N is a natural number greater than 1; a fourth determining module, configured to determine, according to correspondence between the N aggregation levels and modulation mode numbers and/or types of the detected control channels, modulation mode numbers and/or types of the control channels corresponding to the N aggregation levels to be detected, respectively; and the third detection module is used for carrying out joint detection on the N aggregation levels to be detected and the number and/or the type of the modulation modes corresponding to the N aggregation levels respectively.

Optionally, the apparatus comprises: a fifth determining module, configured to determine a transmission technology used by a control channel that needs blind detection; a sixth determining module, configured to determine, according to a correspondence between a transmission technology and an aggregation level corresponding to a detected control channel, an aggregation level of the control channel that needs to be detected and corresponds to the transmission technology; and the fourth detection module is used for detecting the control channel by using the aggregation level corresponding to the transmission technology.

Example 3

Reference will now be made in detail to the preferred embodiments, which are a combination of the above embodiments and preferred embodiments.

The existing control channel detection technology has the problem of excessive blind detection times, mainly the number of blind detection areas is increased, a plurality of DMRS ports need blind detection, and the modulation mode needs blind detection, so that the increase of the geometric multiple of the blind detection times brings higher complexity to a terminal, the detection delay is increased, and the cost of terminal hardware is higher. The following is a detailed description of preferred embodiments one to four.

Preferred embodiment 1

In this embodiment, a base station sends a control signaling on a downlink transmission resource, and a terminal determines a corresponding relationship between a sub-resource block in a resource block and a used DMRS port or DMRS port Group according to an aggregation level, or determines a corresponding relationship between a sub-resource block in an RB and a used DMRS port or DMRS port Group according to a resource size allocated in the terminal resource block. And detecting the control signaling according to the corresponding relation.

Preferably, different aggregation levels have different resource block intra sub-resource block and DMRS port (group) correspondences.

Preferably, when different aggregation levels are indicated through RRC signaling, the corresponding relationship between sub-resource blocks in a resource block and a DMRS port indicates or indicates jointly.

Preferred embodiment two

In this embodiment, a base station sends a control signaling on a downlink transmission resource, a terminal detects the control signaling according to assumptions of multiple transmission technologies, and determines a modulation scheme type to be detected when detecting according to the transmission technologies, where the number or types of modulation schemes to be detected are different under different assumptions of the transmission technologies.

Preferably, the terminal needs the modulation type or type set to be detected by the terminal for a certain transmission technology RRC signaling configuration

Preferably, QPSK is fixedly detected in case of diversity technique, and QPSK and 16QAM are fixedly detected in case of coding technique based on DMRS demodulation.

Preferably, QPSK is fixedly detected in diversity in case of diversity technique, and 16QAM is fixedly detected in coding technique based on DMRS demodulation.

Preferred embodiment three

In this embodiment, a base station sends a control signaling on a downlink transmission resource, a terminal detects the control signaling according to assumptions of multiple aggregation levels, and determines the number or types of modulation schemes to be detected when detecting according to the aggregation levels, where the number or types of modulation schemes to be detected are different at different aggregation levels, and the terminal detects the number or types of modulation schemes according to the corresponding detection.

The terminal needs the modulation mode type or type set to be detected for a certain aggregation level RRC signaling configuration

Preferred embodiment four

In this embodiment, a base station sends a control signaling on a downlink transmission resource, a terminal detects the control signaling according to assumptions of multiple transmission technologies, and different transmission technologies respectively correspond to different aggregation levels to be detected. Preferably, different transmission technologies correspond to different aggregation levels to be detected and different types of aggregation levels or different types of data to be detected.

Preferably, the transmission diversity techniques correspond to X types, the transmission techniques based on DMRS demodulation correspond to Y types, and Y < X.

Preferably, the transmission diversity techniques correspond to X types, and the transmission techniques based on DMRS demodulation correspond to X types, but the aggregation levels included in the X types are different.

Preferably, the open-loop precoding technique corresponds to X types, the transmission technique based on DMRS demodulation corresponds to Y types, and Y < X.

Preferably, the open-loop precoding technique corresponds to X types, and the transmission technique based on DMRS demodulation corresponds to X types, but the aggregation levels included in the X types are different.

Preferred embodiment five

In this embodiment, a base station sends a control signaling on a downlink transmission resource in a second control signaling region, and when the base station sends the downlink control signaling, there are several sizes detected by the control signaling, which are respectively several different aggregation levels defined based on eCCE:

aggregation level a, aggregation level b, aggregation level c, aggregation level d, wherein a, b, c, d are integers. Common values are 1,2,4, and 8. Here, the number is not limited to this value, and is not limited to 4 aggregation levels, and other cases such as 2 aggregation levels and 3 aggregation levels are also possible.

For the base station and the terminal, the following mapping relationship is agreed to exist:

when aggregating level 1, e.g. 1 eCCE is occupied in RB, if Resource1 is therein, its fixed or configured used demodulation pilot Port is Port7, if Resource2 is therein, its fixed or configured used demodulation pilot Port is Port8, if Resource3 is therein, its fixed or configured used demodulation pilot Port is Port9, if Resource4 is therein, its fixed or configured used demodulation pilot Port is Port9, if configured, the base station is configured by signaling.

When the aggregation level is 2, one of the following methods may be employed:

the first method is as follows: 2 ecces are occupied in the RB, and if there are resource1, and 2, resource1 and 2, both resources are fixed or configured to use pilot port7 for channel estimation and demodulation. In the case of resources 3 and 4, both resources are fixed or configured to use pilot port8 for channel estimation and demodulation.

The second method comprises the following steps: 2 ecces are occupied within an RB, and if resource1, and 2, both resources are fixed or configured for channel estimation and demodulation using pilot port 7. In the case of resources 3 and 4, both resources are fixed or configured to use pilot port8 for channel estimation and demodulation.

The third method comprises the following steps: 2 ecces are occupied within an RB, and if resource1, and 2, both resources are fixed or configured for channel estimation and demodulation using pilot port 7. In the case of resources 3 and 4, both resources are fixed or configured to use pilot port9 for channel estimation and demodulation.

The method is as follows: 2 ecces are occupied within an RB, and if resource1, and 2, both resources are fixed or configured for channel estimation and demodulation using pilot port 8. In the case of resources 3 and 4, both resources are fixed or configured for channel estimation and demodulation using the pilot port10.

The fifth mode is as follows: 2 eCCEs are occupied in the RB, if the number is equal to 2 and the number is 1, two groups use any one of the pilot ports 7or 8 to carry out channel estimation and demodulation, but the pilot ports used by the

groups

1 and 2 need to be the same. In the case of resources 3 and 4, both resources are fixed or configured to use either of the pilot ports 9or 10 for channel estimation and demodulation, but the pilot ports used by resources 3 and 4 need to be the same.

When the aggregation level is 4, one of the following modes can be adopted:

the first method is as follows: 2 eCCEs are occupied in the RB, namely, the resource1, 2, 3 and 4 are respectively occupied, four blocks of resources use any one of the pilot ports 7or 8 to carry out channel estimation and demodulation, but the pilot ports used by the resource1, 2, 3 and 4 need to be the same.

The second method comprises the following steps: occupying 2 eCCEs (

resource

1,2, 3, 4) in the RB, and fixedly using a pilot port7 for channel estimation and demodulation by four blocks of resources

The third method comprises the following steps: occupying 2 eCCEs (

resource

1,2, 3, 4) in the RB, and fixedly using a pilot port8 for channel estimation and demodulation by four blocks of resources

At aggregation level 8, since 4 resources are occupied in an RB, the mapping relationship is the same as that at aggregation level 4.

After determining the size, namely the aggregation level, of the control signaling to be sent, the base station maps the control signaling to the frequency domain resource to perform data transmission and precoding processing according to the relationship between the resource and the used pilot frequency port, and the resource/eCCE and the corresponding DMRS port use the same precoding processing.

And when the terminal performs blind detection, determining the corresponding relation between the sub resource blocks in the RB and the used DMRS port or DMRS port Group or determining the corresponding relation between the sub resource blocks in the RB and the used DMRS port or DMRS port Group according to the aggregation level or the size of the resource distributed in the RB of the terminal. The resource size resources allocated within different aggregation levels or RBs are not in the same mapping relationship with the DMRS port. And the further terminal detects the control signaling according to the corresponding relation.

Preferred embodiment six

In this embodiment, the relationship between resource fast inner sub-resources and DMRS ports used by the resource fast inner sub-resources at different aggregation levels is determined by signaling configuration, and the signaling may be a high-level configuration signaling, specifically, a signaling of an RRC layer of UE specific, that is, each UE may have a different corresponding relationship.

When the aggregation level is 2, the base station configuration signaling indicates that part of the UE Resource1, the demodulation pilot port corresponding to 2 is port7, and the demodulation pilot port of Resource3,4 is port9. the base station configuration signaling also indicates that part of the UE Resource1, the demodulation pilot port corresponding to 2 is port8, and the demodulation pilot port corresponding to Resource3,4 is port10.

When aggregation level 4 is reached, the base station configuration signaling indicates that the demodulation pilot port corresponding to the resource1, 2, 3,4 of part of the UEs is port7, and the base station configuration signaling also indicates that the demodulation pilot port corresponding to the resource1, 2, 3,4 of part of the UEs is 8

When the aggregation level is 1, the base station configuration signaling indicates that part of the demodulation pilot port corresponding to the UE resource1 is port7, the demodulation pilot port corresponding to the UE resource2 is port8, the demodulation pilot port corresponding to the UE resource3 is port9, and the demodulation pilot port corresponding to the UE resource1 is port10. The base station configuration signaling further indicates that a demodulation pilot port corresponding to part of the UE resource1 is port8, a demodulation pilot port corresponding to the UE resource2 is port7, a demodulation pilot port corresponding to the UE resource3 is port10, and a demodulation pilot port corresponding to the UE resource1 is port9

When the aggregation level is 2, the base station configuration signaling indicates that part of the demodulation pilot ports corresponding to the UE resource1, 2 is port7, and the demodulation pilot ports corresponding to the UE resource3,4 is port9. The base station configuration signaling also indicates that the demodulation pilot port corresponding to part of the UE resource1, 2 is port8, and the demodulation pilot port corresponding to the UE resource3,4 is port10

Preferred embodiment seven

In this embodiment, a base station sends a control signaling on a downlink transmission resource, and may use QPSK and 16QAM two modulation schemes to modulate and send the control signaling.

The base station always transmits using diversity techniques when transmitting QPSK modulated control signaling symbols. The transmission using diversity techniques herein may be either a transmission in a first control signaling region or a transmission in a second control signaling region using diversity techniques.

Or the base station always transmits using diversity technique when transmitting QPSK modulated control signaling symbols. When transmitting the 16QAM modulated control signaling symbols, the transmission may be performed in a diversity technique as well as using a precoding technique based on DMRS demodulation.

When the terminal detects the control signaling according to the diversity transmission, the modulation mode is only supposed to be QPSK when the transmission technology is used for detection, and when the terminal detects according to the precoding technology based on DMRS demodulation, the modulation mode is only supposed to be 16QAM when the transmission technology is used for detection. Or when the terminal detects the control signaling according to diversity transmission, the modulation mode is only supposed to be QPSK when the transmission technology is used, and when the terminal detects according to the precoding technology based on DMRS demodulation, the modulation mode is supposed to be QPSK when the transmission technology is used, and the modulation mode is supposed to be 16 QAM.

The base station can jointly indicate the corresponding relation between the sub resource blocks under various aggregation levels and the DMRS ports used by the sub resource blocks through signaling. The corresponding relation between the sub-resource blocks under each aggregation level and the DMRS ports used by the sub-resource blocks can also be respectively indicated.

Preferred embodiment eight

In this embodiment, a base station sends a control signaling on a downlink transmission resource, and may use QPSK,16QAM, and 64QAM modulation schemes to modulate and send the control signaling.

The base station always transmits using diversity techniques when transmitting QPSK modulated control signaling symbols. The transmission using diversity techniques may be either a transmission in a first control signaling region or a transmission in a second control signaling region using diversity techniques.

In practice, the base station page may transmit using diversity techniques when transmitting QPSK modulated control signaling symbols. When transmitting control signaling symbols modulated by 16QAM,64QAM, the transmission can be performed in a diversity technique and also using a precoding technique based on DMRS demodulation.

When the terminal detects the control signaling according to the diversity transmission, it only assumes that the modulation scheme is QPSK when the transmission technology is used, and when the terminal detects according to the precoding technology based on DMRS demodulation, it assumes that the modulation scheme 16QAM is detected when the transmission technology is used and further assumes that the modulation scheme 64QAM is detected when the transmission technology is used. Or when the terminal detects the control signaling according to diversity transmission, the modulation mode is only supposed to be QPSK when the transmission technology is used for detection, and when the terminal detects according to the precoding technology based on DMRS demodulation, the modulation mode is supposed to be 16QAM and 64QAM besides the modulation mode is supposed to be QPSK when the transmission technology is used for detection.

Preferred embodiment nine

The base station always transmits using diversity techniques when transmitting QPSK modulated control signaling symbols. The transmission using the diversity technique may be either a transmission in a first control signaling region or a transmission in a second control signaling region.

When the terminal detects the control signaling in the diversity transmission, it is assumed that the modulation scheme is QPSK when the transmission technology is used and 16QAM when the transmission technology is used, and when the terminal detects in the precoding technology based on DMRS demodulation, it is assumed that the modulation scheme 16QAM is detected when the transmission technology is used and it is also assumed that the modulation scheme 64QAM is detected when the transmission technology is used.

Preferred embodiment ten

In this embodiment, modulation schemes to be detected corresponding to various transmission technologies may be determined through RRC signaling configuration. The base station informs the diversity technique of the modulation scheme to be used or the possible modulation scheme set to be used, such as QPSK or (QPSK,16QAM), by sending RRC signaling.

The base station informs the modulation modes used in the precoding technology based on DMRS demodulation, such as 16QAM, (QPSK,16QAM), (16QAM, 64QAM), by transmitting RRC signaling

After receiving the signaling, the terminal can determine the modulation mode to be detected according to the information of the RRC signaling when blind detection is carried out and diversity technology detection is supposed, and determine the modulation mode to be detected when precoding technology detection based on DMRS demodulation is supposed.

Description of the preferred embodiment

In this embodiment, a base station sends a control signaling on a downlink transmission resource, and may use 4 sizes of 1 eCCE, 2 ecces, 4 ecces, and 8 ecces, that is, 4 aggregation levels to modulate and send the control signaling.

When the base station transmits QPSK modulated control signaling symbols, it may use 1 eCCE, 2 ecces, 4 ecces, and 8 ecces with 4 sizes for transmission.

When the base station transmits the 16QAM modulated control signaling symbols, it may use 1 eCCE, 2 ecces, and 2 sizes for transmission.

The terminal detects QPSK and 16QAM according to the aggregation level detection of 1 eCCE, detects QPSK and 16QAM according to the aggregation level detection of 2 eCCEs, and only detects QPSK according to 4 and 8 CCEs.

Description of the preferred embodiment

When the base station transmits QPSK modulated control signaling symbols, 4 ecces may be used, and 8 ecces may be transmitted with 4 sizes.

When the base station transmits the control signaling symbol modulated by 16QAM, the base station may use 1 eCCE, 2 ecces, and 2 size for transmission.

The terminal only detects 16QAM when detecting according to the aggregation level of 1 eCCE, only detects 16QAM when detecting according to the aggregation level of 2 eCCEs, and only detects QPSK when detecting according to 4 and 8 CCEs.

Thirteen preferred embodiments

When the base station transmits the control signaling symbol modulated by 16QAM, the base station may use 1 eCCE, 2 ecces, 4 ecces, and 3 sizes for transmission.

When the base station transmits the 64QAM modulated control signaling symbols, it may use 1 eCCE, 2 ecces, and 2 sizes for transmission.

The terminal detects QPSK,16QAM and 16QAM when detecting according to the aggregation level of 1 eCCE, detects QPSK,16QAM and 16QAM when detecting according to the aggregation level of 2 eCCEs, detects QPSK and 16QAM when detecting according to 4 CCEs, and only detects QPSK when detecting according to 8 CCEs.

It should be noted that, in the eleventh, twelfth and thirteenth preferred embodiments, the modulation scheme to be detected corresponding to each aggregation level may be determined through RRC signaling configuration.

Fourteen preferred embodiments

In this embodiment, the base station notifies the modulation scheme or a possible modulation scheme set to be used when aggregating

levels

1 and 2, such as QPSK and 16QAM, by sending RRC signaling. The base station informs the modulation mode used when the aggregation level is 4,8, such as QPSK, by sending RRC signaling.

The following may also be used: the modulation scheme to be used or possibly used when the base station notifies

aggregation levels

1 and 2 by sending RRC signaling is 16QAM, and the modulation scheme to be used when the base station notifies aggregation levels 4 and 8 by sending RRC signaling is QPSK.

In implementation, it is also possible to adopt a mode that the base station performs the joint notification by sending RRC signaling, for example, if

aggregation levels

1 and 2 use the same signaling and aggregation levels 4 and 8 use the same signaling, then the modulation schemes that need to be detected by the aggregation levels using the same signaling are the same. The

aggregation levels

1,2,4, and 8 may be notified by using different signaling, and modulation schemes to be detected may be configured separately.

Preferred embodiment fifteen

In this embodiment, a base station sends control signaling on a downlink transmission resource, and the control signaling may be transmitted by using a diversity transmission technique and a precoding technique based on DMRS demodulation.

When transmitting using diversity transmission techniques, the base station may select one size from among the sizes of the 4 types of control signaling, for example,

aggregation levels

1,2,4, and 8.

When transmitting using DMRS demodulation based precoding techniques, the base station may select one of the 2 control signaling sizes, e.g.,

aggregation level

1, 2.

In this embodiment, the definition of eCCE is the same when diversity transmission and when coding technology is used based on DMRS demodulation.

The terminal detects the control signaling according to the hypothesis of a plurality of transmission technologies, and detects four sizes of

aggregation levels

1,2,4 and 8 when the hypothesis transmission diversity technology is used for detection. When detection is assumed based on the precoding technique of DMRS demodulation, the aggregation level detects both 1,2 sizes.

In practice, the following method can also be adopted:

when transmitting using diversity transmission techniques, the base station may select one size from among 3 sizes of control signaling, such as aggregation levels 2,4, and 8.

aggregation level

1, 2.

And the terminal detects the control signaling according to the hypothesis of a plurality of transmission technologies, and detects three sizes of aggregation levels 2,4 and 8 when the hypothesis of the transmission diversity technology is used for detection. Aggregation level detection of 1,2 two sizes when detection is assumed based on precoding techniques for DMRS demodulation

In practice, the following method can also be adopted:

when transmitting using diversity transmission techniques, the base station may select one of the 3 sizes of control signaling for transmission, such as aggregation levels 4, 8.

aggregation level

1, 2.

The terminal detects the control signaling according to the hypothesis of multiple transmission technologies, and detects two sizes of aggregation levels 4 and 8 when the hypothesis transmission diversity technology is used for detection. When detection is assumed based on the precoding technique of DMRS demodulation, the aggregation level detects both 1,2 sizes.

Preferred embodiment sixteen

In this embodiment, a control signaling size that needs to be detected for a certain transmission technology may also be configured through higher layer signaling.

For example: the method comprises the steps that the size needing to be detected when the high-layer signaling configuration is transmitted based on the precoding technology of DMRS demodulation is

aggregation level

1,2, or the size needing to be detected when the high-layer signaling configuration is transmitted based on the precoding technology of DMRS demodulation is

aggregation level

1,2,4, or only 1, only 2, or only 4.

For another example: when the size required to be detected is aggregation level 4,8 when the higher layer signaling configuration is transmitted based on diversity, or when the size required to be detected is aggregation level 2,4,8 when the higher layer signaling configuration is transmitted based on the precoding technology of DMRS demodulation, or is only 2, only 4, or only 8.

Preferred embodiment seventeen

In this embodiment, the base station may select to send the control signaling on multiple areas, such as a first control signaling area and a second control signaling area. The second control signaling region may also be further divided into different regions according to different transmission technologies. Under the same transmission technology, a plurality of selectable transmission resource block positions can be also provided.

The base station may send control signaling in region 1 or may send control signaling in region 2.

For example: area 1 is a first control signaling area and a second control signaling area, and area 2 is a second control signaling area. Or the region 1 is a transmission diversity region in the second control signaling region, and the region 2 is a precoding technology region based on DMRS demodulation in the second control signaling region. Region 1 and region 2 may be different RBs.

The base station in area 1 can send 4 sizes of control signaling, such as

aggregation level

1,2,4,8, and the terminal blindly detects these control signaling sizes. Area 2 may send 2 control signaling sizes, such as

aggregation level

1,2, for the base station to blindly detect.

The base station in area 1 may send 2 sizes of control signaling, such as

aggregation level

1,2, and the terminal blindly detects these several sizes of control signaling. Area 2 may send 2 control signaling sizes such as aggregation level 4,8, which are blindly detected by the terminal.

Eighteen preferred embodiments

In this embodiment, it may be selected for the base station to send control signaling over multiple areas, such as a first control signaling area and a second control signaling area. The second control signaling region may also be further divided into different regions according to different transmission technologies. Under the same transmission technology, a plurality of selectable transmission resource block positions can be also provided.

Preferably, the area 1 is a first control signaling area and a second control signaling area, and the area 2 is a second control signaling area. Or the region 1 is a transmission diversity region in the second control signaling region, and the region 2 is a precoding technology region based on DMRS demodulation in the second control signaling region. Region 1 and region 2 may be different RBs.

The base station in the area 1 can use the QPSK modulation mode, and the terminal only detects the QPSK modulation mode when blindly detecting the area. The area 2 can use a 16QAM modulation mode, and only the 16QAM modulation mode is detected when the terminal blindly detects the area

The base station in the area 1 can use the QPSK modulation mode, and the terminal only detects the QPSK modulation mode when blindly detecting the area. QPSK and 16QAM modulation modes can be used in the region 2, and only the QPSK and 16QAM modulation modes are detected when the terminal blindly detects the region

Nineteen preferred embodiments

In this embodiment, the modulation scheme to be detected in region 1 may use higher layer signaling configuration. The modulation scheme to be detected in region 2 can be configured using higher layer signaling.

The aggregation level that region 1 needs to detect may be configured using higher layer signaling. Similar to the previous embodiment, the aggregation level that region 2 needs to detect may be configured using higher layer signaling.

Preferred embodiment twenty

In this embodiment, control signaling is sent corresponding to a plurality of areas, and transmission modes adopted by the plurality of control areas are different. And the terminal respectively performs blind detection according to the transmission modes corresponding to the plurality of areas. The pair of control regions is more than 2 regions.

It should be noted that the diversity technique in the above preferred embodiment may be replaced by an open-loop precoding technique or a single-antenna port transmission technique, and the precoding technique based on DMRS demodulation may also be replaced by a single-stream beamforming technique using one port.

By the embodiment, the method and the device for detecting the control channel are provided, the corresponding relation between the sub-resource block in the resource block and the demodulation reference signal port DMRS port or the demodulation reference signal port Group used by the terminal is determined by the terminal, and the control channel is detected by using the corresponding relation, so that the problem of low efficiency caused by more detection times of the control channel in the related technology is solved, and the detection efficiency of the control channel is improved. It should be noted that these technical effects are not possessed by all the embodiments described above, and some technical effects are obtained only by some preferred embodiments.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, or they may be separately fabricated into various integrated circuit modules, or multiple modules or steps thereof may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method of detection of a control channel, the method comprising:

the terminal detects the control signaling according to different modes and determines the information of a control channel according to the control signaling;

the terminal carries out corresponding detection according to the information of the control channel;

when the terminal detects the control signaling according to the transmission technology adopted by the control channel to be detected in the blind detection, determining the information of the control channel according to the control signaling comprises the following steps: the terminal determines the number and/or the type of the modulation modes for detecting the control channel corresponding to the transmission technology needing blind detection according to the corresponding relation between the transmission technology and the number and/or the type of the modulation modes for blind detection of the control channel;

when the terminal detects the control signaling according to the aggregation level mode, determining the information of the control channel according to the control signaling comprises the following steps: the method comprises the steps that a terminal obtains N aggregation levels corresponding to a control channel to be detected, and the aggregation levels are numbered from 1 to N, wherein N is a natural number greater than 1; the terminal determines the modulation mode number and/or type of the control channel corresponding to the N aggregation levels to be detected respectively according to the corresponding relation between the N aggregation levels and the modulation mode number and/or type of the control channel to be detected respectively;

when the terminal detects the control signaling according to the transmission technology adopted by the blind detection control channel, the determining the information of the control channel according to the control signaling comprises the following steps: the terminal determines the aggregation level of the control channel to be detected, which corresponds to the transmission technology, according to the corresponding relation between the transmission technology and the aggregation level corresponding to the control channel to be detected; and the terminal detects the control channel according to the aggregation level corresponding to the transmission technology.

2. The method of claim 1, wherein the detecting, by the terminal, according to the information of the control channel comprises:

and the terminal uses the transmission technology and the number and/or the type of the modulation modes corresponding to the transmission technology to carry out joint detection on the control channel.

3. The method according to claim 1, wherein the transmission technique for blind detection is different in the number and/or kind of modulation schemes for detecting the control channel.

4. The method according to claim 1, wherein the corresponding relationship is configured through radio resource control RRC signaling of a higher layer, and the corresponding relationship comprises one of:

the transmission technology is a diversity technology, and the modulation mode corresponding to the control channel is Quadrature Phase Shift Keying (QPSK);

the transmission technology is a pre-coding transmission technology based on exclusive demodulation pilot frequency demodulation, and the modulation mode corresponding to the control channel is QPSK and/or 16 Quadrature Amplitude Modulation (QAM).

5. The method of claim 1, wherein the detecting, by the terminal, according to the information of the control channel comprises:

and the terminal performs joint detection on the N aggregation levels to be detected and the number and/or the type of the modulation modes respectively corresponding to the N aggregation levels.

6. The method according to claim 1, wherein at least two different aggregation levels have different numbers and/or types of modulation schemes.

7. The method according to any of claims 1, 5, and 6, wherein the corresponding relationship is configured through a radio resource control, RRC, signaling of a higher layer, and the corresponding relationship is one of the following:

the aggregation level corresponds to 8 eCCEs, and the modulation mode is QPSK.

8. The method of claim 1, wherein the aggregation levels corresponding to different transmission technologies are different, comprising: the different aggregation levels corresponding to different transmission technologies refer to: the number of aggregation levels corresponding to different transmission technologies is different; or the number of aggregation levels corresponding to different transmission technologies is the same and the aggregation levels include different kinds.

9. The method of claim 8, the correspondence being one of:

the transmission technology is a diversity technology, the corresponding aggregation level is A, the transmission technology based on the exclusive demodulation pilot frequency demodulation is B, wherein A is larger than B;

the transmission technology is a diversity technology, the corresponding aggregation level is C, the transmission technology is a transmission technology based on exclusive demodulation pilot frequency demodulation, and the corresponding aggregation level is C, wherein the aggregation level corresponding to the diversity technology comprises different types from the aggregation level corresponding to the transmission technology based on exclusive demodulation pilot frequency demodulation;

10. A detection device of a control channel is applied to a terminal, and the device comprises:

a module for detecting control signaling according to different modes and determining information of a control channel according to the control signaling;

a module for performing corresponding detection according to the information of the control channel;

wherein the apparatus further comprises:

a third determining module, configured to, when a terminal detects a control signaling according to a transmission technology mode adopted by a control channel to be detected in a blind detection manner, determine, according to a correspondence between the transmission technology and a modulation mode number and/or a modulation mode type of the control channel in the blind detection manner, the modulation mode number and/or the modulation mode type of the control channel to be detected, which corresponds to the transmission technology to be detected in the blind detection manner;

an obtaining module, configured to obtain N aggregation levels, numbered from 1 to N, corresponding to a control channel to be detected when a terminal detects a control signaling according to an aggregation level manner, where N is a natural number greater than 1;

a fourth determining module, configured to determine, according to correspondence between the N aggregation levels and modulation mode numbers and/or types of the control channels to be detected, modulation mode numbers and/or types of the control channels corresponding to the N aggregation levels to be detected, respectively;

a sixth determining module, configured to, when a terminal detects a control signaling according to a transmission technology mode adopted by a blind-detected control channel, determine, according to a correspondence between the transmission technology and an aggregation level corresponding to the detection of the control channel, an aggregation level of the control channel that needs to be detected and corresponds to the transmission technology;

a fourth detection module, configured to detect the control channel using the aggregation level corresponding to the transmission technology.

11. The apparatus of claim 10, the apparatus comprising:

a second determining module, configured to determine a transmission technology used by the control channel to be detected for blind detection;

and the second detection module is used for carrying out joint detection on the control channel by using the transmission technology and the number and/or the type of the modulation modes corresponding to the transmission technology.

12. The apparatus of claim 10, the apparatus comprising:

and the third detection module is used for carrying out joint detection on the N aggregation levels to be detected and the number and/or the type of the modulation modes corresponding to the N aggregation levels respectively.

13. The apparatus of claim 10, the apparatus comprising:

and the fifth determining module is used for determining the transmission technology adopted by the control channel needing blind detection.