WO2015139439A1

WO2015139439A1 - Control channel configuration and detection method, device and system

Info

Publication number: WO2015139439A1
Application number: PCT/CN2014/087357
Authority: WO
Inventors: 郭森宝; 戴博; 左志松
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-03-20
Filing date: 2014-09-24
Publication date: 2015-09-24
Also published as: CN104936206A

Abstract

Disclosed are a control channel configuration and detection method, device and system. The control channel configuration method comprises: according to the types of serving cells and/or the types of subframes, grouping, by a base station, the serving cells which are detected by a terminal; and respectively configuring for each group, by the base station, control channel detection information which is required when the terminal detects a control channel, wherein the control channel detection information which corresponds to at least two groups is different, and the control channel detection information comprises at least one of the following: candidate position for control channel detection, the number of candidate positions for control channel detection, the types of control channel detection, and the number of times of control channel detection.

Description

Control channel configuration, detection method, device and system

Technical field

The present invention relates to the field of communications, and in particular to a control channel configuration, detection method, apparatus, and system.

Background technique

The following three types of downlink physical control channels are defined in the Long Term Evolution (LTE) system: Physical Downlink Control Format Indicator Channel (PCFICH), Physical Hybrid Automatic Retransmission Request Indicator Channel (PHICH, Physical Hybrid Automatic Retransmission Request) Indicator Channel), Physical Downlink Control Channel (PDCCH).

The PDCCH is used to carry Downlink Control Information (DCI), and includes: uplink and downlink scheduling information, and uplink power control information. The DCI format (DCI format) is divided into the following types: DCI format 0, DCI format 1, DCI format 1A, DCI format 1B, DCI format 1C, DCI format 1D, DCI format 2, DCI format 2A, DCI format 3, and DCI. Format 3A and so on. among them:

DCI format 0 is used to indicate scheduling of a Physical Uplink Shared Channel (PUSCH);

DCI format 1, DCI format 1A, DCI format 1B, DCI format 1C, and DCI format 1D are used for different modes of code downlink scheduling of a Physical Downlink Shared Channel (PDSCH);

DCI format 2, DCI format 2A, DCI format 2B are used for different modes of space division multiplexing;

The DCI format 3 and the DCI format 3A are used for different modes of the power control command of the physical uplink control channel (PUCCH, Physical Uplink Control Channel) and the PUSCH.

The physical resources of the PDCCH are transmitted in units of Control Channel Elements (CCEs). The size of one CCE is 9 Resource Element Groups (REGs), that is, 36 REs. One PDCCH may occupy 1, 2, 4 or 8 CCEs. For the four PDCCH sizes occupying 1, 2, 4, and 8 CCEs, a tree-like aggregation (Aggregation) is adopted, that is, a PDCCH occupying one CCE can start from an arbitrary CCE position; a PDCCH occupying two CCEs from an even CCE Position start; occupy 4 The PDCCHs of the CCEs start from the CCE position of an integer multiple of 4; the PDCCH occupying 8 CCEs starts from the CCE position of an integral multiple of 8.

Each aggregation level defines a search space, including a common search space and a UE-specific (UE-Specific) search space. The number of CCEs in the entire search space is determined by the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols and the number of PHICH groups occupied by the control region indicated by the PCFICH in each downlink subframe. The UE blindly detects all possible PDCCH code rates in the search space according to the DCI format of the transmission mode.

In the non-contention random access procedure, the base station sends information such as a Preamble Index and a PRACH Mask Index through the DCI format 1A. If the UE is configured by the upper layer to perform PDCCH decoding using a Random Access Radio Network Temporary Identifier (CRC), the UE should follow the PDCCH (Cyclical Redundancy Check). The respective combinations defined in Table 1 below are used to decode the PDCCH and all associated PDSCHs.

Table 1

If the UE is set by the upper layer to perform PDCCH decoding using a CRC scrambled by a Cell Radio Network Temporary Identifier, the UE shall decode the PDCCH and all correlations according to respective combinations defined in Table 2 below. PDSCH.

table 3

The LTE defines a PDCCH (Physical Downlink Control Channel) bearer scheduling allocation and other control information. Each PDCCH is composed of a number of CCEs (Control Channel Element), and the number of CCEs per subframe is determined by the PDCCH. The number and downstream bandwidth are determined.

The UE obtains the PDCCH by blind detection in the search space, and the search space is divided into a common search space and a UE-specific search space. The public search space refers to the area that all UEs search for, which carries the cell-specific information. The dedicated search space is a spatial range that a single UE will search for, and the dedicated search spaces of multiple UEs may overlap, but the general initial search location is different. Before the blind detection, the UE working mode and the Radio Network Temporary Identity (RNTI) type for the Cyclic Redundancy Check (CRC) scrambling of the PDCCH are signaled by the higher layer signaling.

Search space

See Table 3 for the relationship between the aggregation level L and the number of candidate PDCCHs M ^(L) . The aggregation level is the number of CCEs occupied by the PDCCH. When performing blind detection in the user-specific search space, the user equipment first calculates the blind detection initial position Y _k according to the user identifier (UE ID) and the subframe number, and then performs detection in the search space until the PDCCH assigned to itself is detected. .

Table 3. PDCCH candidate set

The correspondence between the aggregation level and the relative position of the first control channel unit of the PDCCH in the user-specific search space is shown in Table 4. The relative position of the first control channel unit of the PDCCH in the user-specific search space refers to the relative position of the first CCE index nCCE occupied by the PDCCH and the blind detection initial position Y _k , which may be represented by nCCE, offset, nCCE, offset=nCCE- Y _k , nCCE, and offset are in the range of 0 to 6, 8, and 10.

Table 4. Correspondence between aggregation level and first CCE position

In the random access process, the terminal needs to send a Preamble to the base station side. The base station side needs to detect the Preamble in the configured time and frequency domain unit. When the base station detects that the Preamble will send the random access response information Msg within the specified time window. 2 to the terminal, the terminal determines whether the base station detects the transmission of the Preamble by detecting the Msg 2, and if it detects its own Preamble, if it is a contention-based random access, the terminal also needs to send the Msg 3 to resolve the competition, and the terminal sends the Msg 3 After receiving the random access response information Msg 4 fed back by the base station, it is determined whether the Msg3 is received by the base station, and if the relevant identification information is detected, the contention resolution process is completed.

In the LTE-Advanced (LTE-Advance) system, since the LTE-Advanced network needs to be able to access the LTE user, its operating band needs to cover the current LTE band. However, there is no available 100 MHz spectrum bandwidth allocated in the current LTE frequency band. Therefore, one technical problem that LTE-Advanced needs to solve is to connect several consecutive component carriers (spectrums) distributed in different frequency bands (Component Carrier). The carrier aggregation (CA, Carrier Aggregation) technology is used to form a 100 MHz bandwidth that can be used by LTE-Advanced. That is, for the aggregated spectrum, it is divided into n component carriers (spectrum), and the spectrum in each component carrier (spectrum) is continuous.

In the prior art, in a CA scenario, if multiple component carriers are aggregated, one of the component carriers needs to be defined as a primary component carrier (PCC), and the remaining component carriers are defined as secondary component carriers (SCC). , Secondary Component Carrier). In addition, the component carrier may also be referred to as a serving cell (Serving Cell), and the primary component carrier may be referred to as a primary serving cell (Pcell, Primary Serving Cell), and the secondary component carrier may be referred to as a secondary serving cell (Scell, Secondary Serving). Cell).

Considering the introduction of dual-link technology in the R12 phase, the biggest difference between the dual-link technology and the CA is that the two eNBs with dual links adopt non-ideal backhual connections, and the scheduling between the two nodes is independent. Since independent scheduling is introduced, the terminal needs to detect the control channel on one or more carriers on the two eNBs respectively. In addition, the terminal needs to detect the CSS space on the SeNB, so as to obtain the random access Msg 2 information corresponding to the SeNB. Therefore, if the double link is introduced on the basis of the CA in the existing manner, the number of blind detections of the terminal is increased.

Summary of the invention

The present invention provides a configuration, a detection method, a device, and a system for controlling a channel to introduce at least the above problem by introducing a double link on the basis of the CA.

According to an aspect of the present invention, a method for configuring a control channel is provided, including: a base station groups a serving cell detected by a terminal according to a serving cell type and/or a subframe type; and the base station separately configures a terminal for each packet. Detecting control channel information required for the control channel, wherein the detection control channel information corresponding to the at least two packets is different, the detection control channel information includes at least one of: detecting a candidate location of the control channel; detecting the control The number of candidate locations of the channel; detecting the type of the control channel; detecting the number of times of the control channel.

Optionally, grouping the serving cell detected by the terminal comprises: grouping the serving cells of the N base stations into S groups, where N and S are integers greater than 0, and 0<S<N+1; When the base station configures the detection control channel information for each packet, the method further includes: configuring, by the base station, the control channel information of the corresponding group of the base station by using the independent predefined signaling or the high layer signaling.

Optionally, the serving cell is divided into two groups, one group is a serving cell of the primary serving base station MeNB, and the other group is a serving cell of the non-primary serving base station SeNB, and the MeNB and the SeNB respectively pass independent predefined or high-level letters. Let the configuration detect the control channel information.

Optionally, the control channel is a control channel of a common search space.

Optionally, the base station groups the serving cells detected by the terminal according to the subframe type, including: the SeNB groups the different subframes, and the subframes in which the common search space exists on the SPCell are divided into one group, and the other subframes are divided into a group.

Optionally, the base station limits the maximum number of serving cells configured to the terminal to 4.

Optionally, the base station limits the serving cell corresponding to the highest cell index to have a smaller number of control channel detections, and ensures that the total number of detections of all cells does not exceed a predefined maximum number of detections.

Optionally, the base station pre-defined terminal detects a subframe in a common search space of the non-primary base station corresponding to the primary serving cell, and does not detect a terminal-specific search space or terminal-specific control information of all serving cells configured by the non-primary base station.

Optionally, the base station pre-defined terminal detects a subframe of random access response information in a common search space of a serving cell configured by a non-primary base station, and the terminal does not detect terminal dedicated of all serving cells configured by the non-primary base station. Search space or terminal-specific control information.

Optionally, multiple serving cells configured under the non-primary base station are located in the same time advance group TAG.

Optionally, the base station pre-defined terminal detects a subframe in a common search space corresponding to the primary serving cell of the non-primary base station, and the terminal does not detect all the TAGs related to the common search space control information configured by the non-primary base station All or part of the control information of the serving cell.

Optionally, when the non-primary base station generates a random access procedure corresponding to the primary serving cell or when the common search space information related TAG is the TAG of the primary serving cell, the predefined terminal does not detect the non-primary on the subframe. Downlink control information of all serving cells configured by the base station and downlink control information format DCI Format corresponding to the uplink control information.

Optionally, when the non-primary base station is not in the random access process or the uplink keeps the synchronization, the non-primary base station adopts a self-scheduling manner for all the serving cells in the TAG, and the predefined terminal does not detect the corresponding The downlink control information of the serving cell and the DCI Format corresponding to the uplink control information.

Optionally, when the non-primary base station is not in the random access process or the uplink keeps the synchronization, the non-primary base station uses the cross-carrier scheduling mode corresponding to the serving cell in the TAG, where the serving cell is Scheduling a carrier, and scheduling a scheduling carrier of the serving cell is located in another TAG that is performing a random access procedure, or the scheduling carrier and the scheduled carrier are located in the same TAG, and the predefined terminal does not detect the corresponding serving cell. The downlink control information and the DCI Format corresponding to the uplink control information.

Optionally, when the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the non-primary base station uses the cross-carrier scheduling mode corresponding to the serving cell in the TAG, and the scheduling carrier is located. In another TAG in the TAG where the random access procedure does not occur or in the TAG in which the random access procedure is not required, or the uplink is synchronized, the predefined terminal does not detect the DCI Format corresponding to the uplink control information of the corresponding serving cell.

Optionally, the base station pre-defined terminal detects a subframe of a common search space corresponding to the primary serving cell of the non-primary base station, and when the terminal detects the common search space related information in the common search space, the terminal only detects the DCI Format1A or the DCI Format 1C. .

Optionally, the common search space related information includes at least one of the following information: random access response related information Msg2, system message information SI, and paging message information Paging.

Optionally, the common search space related information includes: random access response information.

According to an aspect of the present invention, a method for detecting a control channel is provided, including: a terminal groups a serving cell detected by a terminal according to a serving cell and/or a subframe type; and the terminal separately determines a detection control channel for each packet. The detection control channel information is required, wherein the detection control channel information comprises at least one of: detecting a candidate position of the control channel; detecting a number of candidate positions of the control channel; detecting a type of the control channel; detecting The number of times of the control channel; the detection control channel information corresponding to the at least two packets is different; the terminal detects the control channel of the serving cell in each packet according to the detection control channel information determined for each packet .

Optionally, the terminal groups, according to the serving cell, the serving cell detected by the terminal, including: grouping the serving cells of the N base stations into S groups, where N and S are integers greater than 0, and 0<S< When the terminal determines the detected control channel information of the detected control channel for each packet, the method further includes: configuring, by the terminal, the terminal detection control in each packet by independently pre-defining or receiving high-level signaling. The detection of the channel controls channel information.

Optionally, the grouping, by the terminal, the serving cells of the N base stations into the S groups includes: the terminal grouping the serving cells corresponding to the primary serving base station MeNB into a group, and the serving cell corresponding to the non-primary serving base station SeNB Divided into a group.

Optionally, the control channel is a control channel of a common search space.

Optionally, the terminal groups the serving cell detected by the terminal according to the serving cell and/or the subframe type, including: the terminal groups different subframes of the SeNB, and divides the subframe in which the common search space exists on the SPCell. One group and other sub-frames are divided into one group.

Optionally, when the terminal determines the detection control channel information for each packet, the method further includes: the maximum number of serving cells configured by the terminal restriction is 4.

Optionally, the terminal restricts the serving cell corresponding to the lowest cell index to have a smaller number of control channel detections, and ensures that the total number of detections of all cells does not exceed a predefined maximum number of detections.

Optionally, the terminal pre-defined terminal detects a subframe in a common search space of the non-primary base station corresponding to the primary serving cell, and the terminal does not detect a terminal-specific search space or terminal-specific control information of all serving cells configured by the non-primary base station. .

Optionally, the terminal pre-defined terminal detects a subframe of random access response information in a common search space of a serving cell configured by a non-primary base station, and the terminal does not detect a terminal dedicated to all serving cells configured by the non-primary base station. Search space or terminal-specific control information.

Optionally, the terminal pre-defined terminal detects a subframe of a common search space corresponding to the primary serving cell of the non-primary base station, and the terminal does not detect all the TAGs related to the common search space control information configured by the non-primary base station. All or part of the control information of the serving cell.

Optionally, when the non-primary base station generates a random access procedure corresponding to the primary serving cell or when the common search space information related TAG is the TAG of the primary serving cell, the predefined terminal does not detect the non-primary on the subframe. The downlink control information of all serving cells configured by the base station and the DCI Format corresponding to the uplink control information.

Optionally, when the non-primary base station is not in the random access process or the uplink is kept in synchronization, the non-primary base station adopts a self-scheduling manner for all the serving cells in the TAG, and the predefined terminal does not detect the corresponding service. The downlink control information of the cell and the DCI Format corresponding to the uplink control information.

Optionally, when the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the non-primary base station is configured to use the cross-carrier scheduling manner corresponding to the serving cell in the TAG, where the serving cell is Scheduling a carrier, and scheduling a scheduling carrier of the serving cell is located in another TAG that is performing a random access procedure, or the scheduling carrier and the scheduled carrier are located in the same TAG, and the predefined terminal does not detect the corresponding serving cell. The downlink control information and the DCI Format corresponding to the uplink control information.

Optionally, when the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the non-primary base station uses the cross-carrier scheduling mode corresponding to the serving cell in the TAG, and the scheduling carrier is located in another In a TAG in a TAG that does not have a random access procedure or in a TAG that does not need to perform a random access procedure or in which the uplink is synchronized, the predefined terminal does not detect the DCI Format corresponding to the uplink control information of the corresponding serving cell.

Optionally, the terminal pre-defined terminal detects a subframe of a common search space corresponding to the primary serving cell of the non-primary base station, and when the terminal detects the common search space related information in the common search space, only the DCI Format1A or DCI Format is detected. 1C.

According to still another aspect of the present invention, a device for configuring a control channel is provided, comprising: a grouping module, configured to group a serving cell detected by a terminal according to a serving cell type and/or a subframe type; and a configuration module, configured to The detection control channel information required by the terminal to detect the control channel is configured separately for each packet, wherein the detection control channel information corresponding to the at least two packets is different, and the detection control channel information includes at least one of: detecting the control channel a candidate location; detecting a number of candidate locations of the control channel; detecting a type of the control channel; detecting a number of times of the control channel.

Optionally, the grouping module is configured to group the serving cells of the N base stations into S groups, where N and S are integers greater than 0, and 0<S<N+1; And configured to configure, by independent predefined signaling or higher layer signaling, detection control channel information of the detection control channel of the terminal corresponding group of the base station.

Optionally, the grouping module is configured to group different subframes of the non-primary serving base station SeNB, and the subframes in which the common search space exists on the SPCell are divided into one group, and the other subframes are divided into one group.

Optionally, the apparatus further includes: a control module, configured to limit the maximum number of serving cells configured to the terminal to 4.

Optionally, the control module is further configured to limit the serving cell corresponding to the highest cell index to have a smaller number of control channel detections, and ensure that the total number of detections of all cells does not exceed a predefined maximum number of detections.

Optionally, the configuration module is further configured to: configure, by using a predefined configuration, at least one of: a predefined terminal detects a subframe of a common search space corresponding to the primary serving cell of the non-primary base station, and does not detect the configuration of the non-primary base station. a terminal-specific search space or terminal-specific control information of all serving cells; the predefined terminal detects a subframe of random access response information in a common search space of a serving cell configured by the non-primary base station, and the terminal does not detect the non-primary base station configuration a terminal-specific search space or terminal-specific control information of all serving cells; the predefined terminal detects a subframe in a common search space of the non-primary base station corresponding to the primary serving cell, and the terminal does not detect the common search space configured by the non-primary base station Control all or part of the control information of all serving cells in the TAG associated with the information.

Optionally, the configuration module is further configured to: configure, by a predefined configuration, at least one of the following information: when the non-primary base station corresponds to the primary serving cell, a random access procedure occurs, or when the common search space information related TAG is the primary serving cell In the TAG, the predefined terminal does not detect the downlink control information of all serving cells configured by the non-primary base station and the downlink control information format DCI Format corresponding to the uplink control information in the subframe; when the non-primary base station corresponds to the primary serving cell The non-primary base station adopts a self-scheduling manner for all the serving cells in the TAG, and the predefined terminal does not detect the downlink control information of the corresponding serving cell and the DCI corresponding to the uplink control information. Format: when the non-primary base station is not in the random access procedure or the uplink keeps the synchronization, the non-primary base station uses the cross-carrier scheduling mode corresponding to the serving cell in the TAG, and the serving cell is the scheduled carrier. And scheduling the scheduling carrier of the serving cell to be located at another random connection In the TAG of the ingress process, the scheduling carrier and the scheduled carrier are located in the same TAG, and the predefined terminal does not detect the downlink control information of the corresponding serving cell and the DCI Format corresponding to the uplink control information; when the non-primary base station corresponds to the master When the serving cell is not in the random access process or the uplink is kept in synchronization, when the non-primary base station corresponds to the serving cell in the TAG, the cross-carrier scheduling mode is adopted, and the scheduling carrier is located in another TAG that does not have a random access procedure. The pre-defined terminal does not detect the DCI Format corresponding to the uplink control information of the corresponding serving cell in the TAG in the TAG or the uplink synchronization that does not need to perform the random access procedure; the predefined terminal detects the primary serving cell corresponding to the non-primary base station. The subframe of the common search space, when the terminal detects the common search space related information in the common search space, only the DCI Format1A or DCI Format 1C is detected.

According to still another aspect of the present invention, a device for detecting a control channel includes: a grouping module configured to group a serving cell detected by a terminal according to a serving cell and/or a subframe type; and a determining module, configured to Determining, respectively, the detection control channel information required by the control channel, the detection control channel information comprising at least one of: detecting a candidate position of the control channel; and detecting a candidate of the control channel a number of locations; detecting a type of the control channel; detecting a number of times of the control channel; wherein, the detection control channel information corresponding to the at least two packets is different; and the detecting module is configured to determine, according to the determining module, each packet The detecting control channel information detects a control channel of a serving cell in each packet.

Optionally, the grouping module is configured to group the serving cells of the N base stations into S groups, where N and S are integers greater than 0, and 0<S<N+1; The method is configured to configure the detection control channel information of the terminal detection control channel in each packet by independently pre-defining or receiving high-layer signaling.

Optionally, the grouping module is further configured to group different subframes of the non-primary serving base station SeNB, and divide the subframes in which the common search space exists on the SPCell into one group, and the other subframes are divided into one group.

Optionally, the method further includes: a control module, configured to limit the maximum number of serving cells configured for the terminal to 4.

Optionally, the control module is further configured to limit the serving cell corresponding to the lowest cell index to have a smaller number of control channel detections, and ensure that the total number of detections of all cells does not exceed a predefined maximum number of detections.

Optionally, the configuration module is further configured to: configure, by using a predefined manner, information of at least one of the following: the predefined terminal detects a subframe in a common search space of the primary serving cell corresponding to the non-primary base station, and the terminal does not detect the non- a terminal-specific search space or terminal-specific control information of all serving cells configured by the primary base station; the predefined terminal detects a subframe of random access response information in a common search space of the serving cell configured by the non-primary base station, and the terminal does not detect the subframe a terminal-specific search space or terminal-specific control information of all serving cells configured by the non-primary base station; the predefined terminal detects a subframe of the common search space of the primary serving cell corresponding to the non-primary base station, and the terminal does not detect the configuration of the non-primary base station All or part of the control information of all serving cells in the TAG related to the common search space control information.

Optionally, the configuration module is further configured to: configure at least one of the following information in a predefined manner: when a non-primary base station corresponds to a primary serving cell, a random access procedure occurs, or when the common search space information is associated with a TAG as a primary serving cell When the TAG is located, the predefined terminal does not detect the downlink control information of all the serving cells configured by the non-primary base station and the DCI Format corresponding to the uplink control information, and the non-primary base station is not randomly connected to the primary serving cell. The non-primary base station is in a self-scheduling manner for all the serving cells in the TAG, and the predefined terminal does not detect the downlink control information of the corresponding serving cell and the DCI Format corresponding to the uplink control information; The primary base station is not in the random access procedure or the uplink keeps synchronization corresponding to the primary serving cell, and the serving cell is a scheduled carrier, and the serving cell is a scheduled carrier, and the serving cell is a scheduling carrier. The scheduling carrier of the serving cell is located in another TAG that is undergoing a random access procedure or The scheduled carrier and the scheduled carrier are located in the same TAG, and the predefined terminal does not detect the downlink control information of the corresponding serving cell and the DCI Format corresponding to the uplink control information; when the non-primary base station corresponds to the primary serving cell is not in random The access process or uplink remains synchronized when the non-primary base The station corresponding to the serving cell in the TAG adopts a cross-carrier scheduling mode, and the scheduling carrier is located in another TAG that does not have a random access procedure or in a TAG that does not need to perform a random access procedure or in an TAG that is synchronized in the uplink. The predefined terminal does not detect the DCI Format corresponding to the uplink control information of the corresponding serving cell; the predefined terminal detects a subframe in the common search space of the primary serving cell corresponding to the non-primary base station, and the terminal detects the common search space in the common search space. For related information, only DCI Format 1A or DCI Format 1C is detected.

According to still another aspect of the present invention, a control system for a control channel is provided, comprising: a base station and a terminal, wherein the base station and the control device of the above-mentioned control channel, the terminal includes the above-mentioned detection device for a control channel.

The present invention can ensure that the maximum number of times that the terminal detects the control channel does not exceed the predefined number of detections of the terminal without affecting the average throughput of the terminal and the real-time service scheduling.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic structural diagram of a detection system of a control channel according to an embodiment of the present invention;

2 is a flowchart of a method for detecting a control channel according to an embodiment of the present invention;

3 is a flowchart of a method for configuring a control channel according to an embodiment of the present invention;

4 is a schematic structural diagram of a device for configuring a control channel according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a device for detecting a control channel according to an embodiment of the present invention; FIG.

FIG. 6 is a schematic diagram of a system configuration scenario according to an embodiment of the invention.

detailed description

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

In the embodiment of the invention, the TAG is a time advance group, and one or more serving cells with the same or similar uplink timing are located in the same TAG. The cell may also be referred to as a carrier, and one cell is on an independent carrier. terminal service. There are at least two base stations (eNBs) in the dual-link scenario, which are called MeNB and SeNB, respectively, the MeNB is the primary serving base station, and the SeNB is the non-primary serving base station (or the secondary serving base station), and the primary serving base station can be responsible for transmitting the SeNB to the terminal. Some system messages and some high-level configuration signaling. The MeNB and the SeNB can implement independent MAC layer scheduling.

The MeNB can be configured with multiple serving cells (carriers), one of which is the primary serving cell of the MeNB, which is called the MPcell. The uplink PUCCH of all the serving cells in the MeNB is transmitted only on the carrier corresponding to the MPcell, and the terminal only detects on the MPcell. System information and paging messages of the MeNB.

A plurality of serving cells (carriers) may be configured under the SeNB, one of which is a primary serving cell of the SeNB, and is called an SPcell. The uplink PUCCH of all serving cells in the SeNB is transmitted only on the carrier corresponding to the SPcell, and the terminal only detects on the SPcell. Uplink random access response information (Msg2) corresponding to different TAG cells (carriers) in the SeNB.

Preferably, the uplink PUCCH of the serving cell under the SeNB may not be restricted from being transmitted on the MPcell carrier.

1 is a schematic structural diagram of a detection system for a control channel according to an embodiment of the present invention. As shown in FIG. 1, the system mainly includes a base station 10 and a terminal 12. The base station 10 configures information about the detected control channel for the terminal, and the terminal 12 detects the control channel according to the configuration of the base station 10. Specifically, the base station 10 is configured to group the serving cells detected by the terminal according to the serving cell type and/or the subframe type, and configure the detection control channel information of the terminal detection control channel for each packet, where at least two groups are configured. Corresponding detection control channel information is different, wherein the detection control channel information may be at least one of: detecting a candidate position of the control channel; detecting a number of candidate positions of the control channel; detecting a type of the control channel; detecting The number of times the control channel. The terminal 12 is configured to group the serving cell detected by the terminal according to the serving cell and/or the subframe type; respectively determine, for each packet, the detection control channel information of the detection control channel; and then determine according to the determined for each packet The control channel information is detected, and the control channel of the serving cell in each packet is detected.

The following describes the method for configuring the control channel detected by the terminal and detecting the terminal side control channel by the base station side.

FIG. 2 is a flowchart of a method for configuring a control channel according to an embodiment of the present invention. As shown in FIG. 2, the method mainly includes the following steps:

Step S202: The base station groups the serving cells detected by the terminal according to the serving cell type and/or the subframe type.

Step S203, the base station separately configures, for each packet, detection control channel information required by the terminal to detect the control channel, where the detection control channel information corresponding to the at least two packets is different, and the detection control channel information may be at least one of the following Detecting a candidate location of the control channel; detecting a number of candidate locations of the control channel; detecting a type of the control channel; detecting a number of times of the control channel

Optionally, grouping the serving cell detected by the terminal includes: grouping the serving cells of the N base stations into S groups, where N and S are integers greater than 0, and 0<S<N+1; The base station may configure the detection control channel information of the terminal to the corresponding group of the base station by using independent predefined signaling or high layer signaling.

Optionally, the serving cell may be divided into two groups, one group is a serving cell of a primary serving base station MeNB, and another group is a serving cell of a non-primary serving base station SeNB, where the MeNB and the SeNB are respectively independently predefined or The high layer signaling configuration terminal detects the detection control channel information of the control channel of the group.

Optionally, the foregoing control channel may be a control channel of a common search space.

Optionally, in step S202, the SeNB groups the different subframes, and the subframes in which the common search space exists on the SPCell are divided into one group, and the other subframes are divided into one group.

Optionally, when the related information of the control channel of each serving cell group detected by the terminal is configured in step S204, the base station limits the maximum number of serving cells configured to the terminal to 4. Thereby, the number of blind detections of the terminal can be further reduced.

Optionally, in step S204, the base station may further limit that the serving cell corresponding to the highest cell index has a smaller number of control channel detections, and ensure that the total number of detections of all cells does not exceed a predefined maximum number of detections. Thereby, the number of blind detections of the terminal can be further reduced.

Optionally, in step S204, the base station may pre-define a terminal to detect a subframe of a common search space corresponding to the primary serving cell of the non-primary base station, and not detect a terminal-specific search space of all the serving cells configured by the non-primary base station. Or terminal-specific control information.

Optionally, in step S204, the base station may pre-define a subframe in which the terminal detects random access response information in a common search space of a serving cell configured by the non-primary base station, and the terminal does not detect the configuration of the non-primary base station. Terminal-specific search space or terminal-specific control information for all serving cells.

Optionally, multiple serving cells configured under the non-primary base station are located in the same time advance group (TAG).

Optionally, in step S204, the base station may pre-define a terminal to detect a subframe in a common search space corresponding to the primary serving cell of the non-primary base station, and the terminal does not detect the common search space control information configured by the non-primary base station. All or part of the control information of all serving cells in the associated TAG.

Optionally, when the non-primary base station generates a random access procedure corresponding to the primary serving cell or when the common search space information related TAG is the TAG of the primary serving cell, the base station may pre-define the terminal in the subframe in step S204. The downlink control information of all the serving cells configured by the non-primary base station and the downlink control information format DCI Format corresponding to the uplink control information are not detected.

Optionally, when the non-primary base station is not in the random access procedure or the uplink keeps synchronization, and the non-primary base station adopts a self-scheduling manner corresponding to all the serving cells in the TAG, the base station is configured for each packet. When the number of control channel candidate locations detected by the terminal and/or the type of the control channel detected by the terminal are respectively configured, in step S204, the base station may pre-define the downlink control information of the corresponding serving cell and the DCI Format corresponding to the uplink control information. .

Optionally, when the non-primary base station is not in the random access process or the uplink keeps the synchronization, the non-primary base station uses the cross-carrier scheduling mode corresponding to the serving cell in the TAG, where the serving cell is scheduled. a carrier, and the scheduling carrier that schedules the serving cell is located in another TAG that is performing a random access procedure or the scheduling carrier and the scheduled carrier are located in the same TAG, and the base station is separately configured for each packet. When the number of control channel candidate positions detected by the terminal and/or the type of the control channel detected by the terminal are detected, in step S204, the base station may pre-define the terminal not to detect the downlink control information of the corresponding serving cell and the DCI Format corresponding to the uplink control information.

Optionally, when the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the non-primary base station uses the cross-carrier scheduling mode corresponding to the serving cell in the TAG, and the scheduling carrier is located in another In a TAG in a TAG that does not have a random access procedure or in a TAG that does not need to perform a random access procedure or in which the uplink is synchronized, the base station separately configures the number of control channel candidate locations detected by the terminal for each packet and/or When the type of the control channel detected by the terminal is detected, in step S204, the base station may pre-define the DCI Format corresponding to the uplink control information of the corresponding serving cell.

Optionally, the base station pre-defined terminal detects a subframe of a common search space corresponding to the primary serving cell of the non-primary base station, and when the terminal detects the common search space related information in the common search space, the terminal only detects the DCI Format1A or the DCI Format 1C. . Preferably, only DCI Format 1A is detected.

FIG. 3 is a flowchart of a method for detecting a control channel according to an embodiment of the present invention. As shown in FIG. 3, the method mainly includes the following steps:

Step S302: The terminal groups the serving cell detected by the terminal according to the serving cell and/or the subframe type.

Step S304, the terminal determines, for each packet, detection control channel information required for detecting a control channel, where the detection control channel information corresponding to the at least two packets is different, and the detection control channel information may include at least one of the following Detecting a candidate location of the control channel; detecting a number of candidate locations of the control channel; detecting a type of the control channel; detecting a number of times of the control channel;

The terminal may determine related information of the detected control channel according to the configuration and predefined of the base station.

Step S306, the terminal detects a control channel of the serving cell in each packet according to the detection control channel information determined for each packet.

Optionally, in step S302, the terminal may group the serving cells of the N base stations into S groups, where N and S are integers greater than 0, and 0<S<N+1; in this case The terminal may configure the detection control channel information of the terminal detection control channel in each packet by independently pre-defining or receiving high-level signaling.

Optionally, the grouping, by the terminal, the serving cells of the N the base stations into the S groups may include: the terminal grouping the serving cells corresponding to the primary serving base station MeNB into a group, and the service corresponding to the non-primary serving base station SeNB The cells are grouped together.

Optionally, the control channel is a control channel of a common search space.

Optionally, in step S304, the terminal may further limit the configured maximum number of serving cells to 4. Thereby, the number of blind detections of the terminal can be further reduced.

Optionally, in step S304, the terminal may further limit that the serving cell corresponding to the lowest cell index has a smaller number of control channel detections, and ensure that the total number of detections of all cells does not exceed a predefined maximum number of detections.

Optionally, in step S304, the terminal may further pre-define a terminal that detects a common search space of the primary serving cell in the non-primary base station, and the terminal does not detect the terminal dedicated to all the serving cells configured by the non-primary base station. Search space or terminal-specific control information.

Optionally, in step S304, the terminal may further define, by the terminal, a subframe that detects random access response information in a common search space of the serving cell configured by the non-primary base station, where the terminal does not detect the non-primary base station configuration. Terminal-specific search space or terminal-specific control information for all serving cells.

Optionally, in step S304, the terminal may further pre-define a subframe in which the terminal detects a common search space corresponding to the primary serving cell of the non-primary base station, and the terminal does not detect the common search space control configured by the non-primary base station. All or part of the control information of all serving cells in the information-related TAG.

Optionally, when the non-primary base station generates a random access procedure corresponding to the primary serving cell or when the common search space information related TAG is the TAG of the primary serving cell, the terminal may further define the terminal in step S304. The downlink control information of all the serving cells configured by the non-primary base station and the DCI Format corresponding to the uplink control information are not detected on the subframe.

Optionally, when the non-primary base station is not in the random access procedure or the uplink keeps the synchronization, the non-primary base station adopts a self-scheduling manner in all the serving cells in the TAG, in step S304, The terminal may further define that the terminal does not detect the downlink control information of the corresponding serving cell and the DCI Format corresponding to the uplink control information.

Optionally, when the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the non-primary base station is configured to use the cross-carrier scheduling manner corresponding to the serving cell in the TAG, where the serving cell is Scheduling a carrier, and scheduling a scheduling carrier of the serving cell is located in another TAG that is performing a random access procedure, or the scheduling carrier and the scheduled carrier are located in the same TAG, and in step S304, the terminal further The terminal may not be configured to detect the downlink control information of the corresponding serving cell and the DCI Format corresponding to the uplink control information.

Optionally, when the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the non-primary base station uses the cross-carrier scheduling mode corresponding to the serving cell in the TAG, and the scheduling carrier is located in another In a TAG in a TAG that does not have a random access procedure or in a TAG that does not need to perform a random access procedure or in which the uplink is synchronized, in step S304, the terminal may further define that the terminal does not detect the uplink of the corresponding serving cell. The DCI Format corresponding to the control information.

Optionally, the terminal pre-defined terminal detects a subframe of a common search space corresponding to the primary serving cell of the non-primary base station, and when the terminal detects the common search space related information in the common search space, only the DCI Format1A or DCI Format is detected. 1C. Preferably, only DCI Format 1A is detected.

Optionally, the common search space related information includes: random access response information (Msg2 and/or Msg 4).

According to an embodiment of the present invention, a control channel configuration apparatus is further provided. As shown in FIG. 4, the apparatus may include: a grouping module 42 configured to detect a terminal according to a serving cell type and/or a subframe type. The cell is configured to be configured. The configuration module 44 is configured to separately configure, for each packet, detection control channel information of the terminal detection control channel, where the detection control channel information corresponding to the at least two packets is different, and the detection control channel information may include At least one of: detecting a candidate location of the control channel; detecting a number of candidate locations of the control channel; detecting a type of the control channel; detecting a number of times of the control channel.

Optionally, the apparatus may further include: a control module, configured to limit the maximum number of serving cells configured to the terminal to 4.

In a specific implementation process, the configuration of the control channel may be located in the base station shown in FIG. 1 , and the control channel detected by the terminal is configured in the manner described in the foregoing method for configuring the control channel, and details are not described herein.

According to an embodiment of the present invention, a control device for detecting a control channel is further provided. As shown in FIG. 5, the device may include: a grouping module 52, configured to perform, on a serving cell detected by the terminal according to a serving cell and/or a subframe type. a determining unit 54 configured to determine, for each packet, detection control channel information required for the control channel, the detection control channel information comprising at least one of: detecting a candidate location of the control channel; detecting the a number of candidate locations of the control channel; detecting the type of the control channel; detecting the number of times of the control channel; wherein, the detection control channel information corresponding to the at least two packets is different; the detecting module 56 is configured to be configured according to the determining module The detection control channel information determined by each packet detects a control channel of a serving cell in each packet.

Optionally, the grouping module 52 is configured to group the serving cells of the N base stations into S groups, where N and S are integers greater than 0, and 0<S<N+1; the determining module It is further arranged to configure the detection control channel information of the terminal detection control channel in each packet by independently pre-defining or receiving higher layer signaling.

Optionally, the grouping module 52 is further configured to group different subframes of the non-primary serving base station SeNB, divide the subframes in which the common search space exists on the SPCell into one group, and divide the other subframes into one group.

Optionally, the apparatus may further include: a control module, configured to limit the maximum number of serving cells configured for the terminal to 4.

Optionally, the control module may be configured to limit the serving cell corresponding to the lowest cell index to have a smaller number of control channel detections, and ensure that the total number of detections of all cells does not exceed a predefined maximum number of detections.

Optionally, the configuration module 54 is further configured to: configure, by using a predefined manner, information of at least one of the following: the predefined terminal detects a subframe in a common search space of the primary serving cell corresponding to the non-primary base station, and the terminal does not detect the a terminal-specific search space or terminal-specific control information of all serving cells configured by the non-primary base station; the predefined terminal detects a subframe of random access response information in a common search space of the serving cell configured by the non-primary base station, and the terminal does not detect the a terminal-specific search space or terminal-specific control information of all serving cells configured by the non-primary base station; the predefined terminal detects a subframe of the common search space of the primary serving cell corresponding to the non-primary base station, and the terminal does not detect the configuration of the non-primary base station The common search space controls all or part of the control information of all serving cells in the TAG associated with the information.

Optionally, the configuration module 54 is further configured to: configure at least one of the following information in a predefined manner: when the non-primary base station corresponds to the primary serving cell, a random access procedure occurs, or when the common search space information is related to the TAG as a primary service When the cell is located in the TAG, the predefined terminal does not detect the downlink control information of all serving cells configured by the non-primary base station and the DCI Format corresponding to the uplink control information in the subframe; when the non-primary base station corresponds to the primary serving cell is not in random The access process or the uplink is synchronized, and the non-primary base station adopts a self-scheduling manner for all the serving cells in the TAG, and the predefined terminal does not detect the downlink control information of the corresponding serving cell and the DCI Format corresponding to the uplink control information; The non-primary base station is not in the random access procedure or the uplink is kept in synchronization. When the non-primary base station corresponds to the serving cell in the TAG, the serving cell is the scheduled carrier, and the scheduling is performed. The scheduling carrier of the serving cell is located in another TAG that is performing a random access procedure. The scheduled carrier and the scheduled carrier are located in the same TAG, and the predefined terminal does not detect the downlink control information of the corresponding serving cell and the DCI Format corresponding to the uplink control information; when the non-primary base station corresponds to the primary serving cell is not in random The access process or the uplink keeps synchronization, when the non-primary base station corresponds to the serving cell in the TAG adopts a cross-carrier scheduling mode, and the scheduling carrier is located in another TAG that does not have a random access procedure or does not need to perform random In the TAG of the access procedure or in the TAG in which the uplink is synchronized, the predefined terminal does not detect the DCI Format corresponding to the uplink control information of the corresponding serving cell; the predefined terminal detects the sub-standard base station corresponding to the primary search cell of the primary serving cell. The frame detects only the DCI Format 1A or the DCI Format 1C when the terminal detects the common search space related information in the common search space.

In a specific implementation process, the detection device of the control channel may be located in the terminal shown in FIG. 1 and the control channel detected by the terminal is detected in the manner described in the foregoing method for detecting the control channel, and details are not described herein.

The technical solutions provided by the embodiments of the present invention are described below through specific implementations.

Embodiment 1

Base station side:

In the communication system of this embodiment, there are two dual-link eNBs, MeNB and SeNB, and a dual-link UE. After the UE establishes the double-link, the eNB and the UE adopt a predefined manner as shown in Table 4 and Table 5 below. A definition of the number of common search space detections by different eNBs.

Table 4. Predefined ways

Table 5. Number of detections for public search spaces in CA

Among them, in CA, DCI Format1C and DCI Format 1A need to be detected on the MPcell. At this time, the terminal needs a total of 2*(4+2)=12 tests. In the dual-link scenario, because there is a SeNB, it is necessary to detect the common search space on the SPcell of the SeNB. In order to ensure that the total common search space does not exceed the number of blind detections of the R11 CA, it is necessary to ensure 2*(N0+N1)+ X*(N2+N3)<12 or 2*(N0+N1)+X*(N2+N3)=12. Where N0>0, N1>0, N2>0, N3>0, and the value of X is 1 or 2. If the base station pre-defined terminal detects only DCI Format 1A on the SPcell, the value of X is 1 if the base station The predefined terminal detects DCI Format 1A and DCI Format 1C on the SPcell, then the value of X is 2.

According to the above predefined rules, the following predefined methods can be used (Table 6 to Table 15).

Table 6. Predefined mode 1 (X takes the value 1)

Table 7. Predefined mode 2 (X takes the value 1)

Table 8. Predefined mode 3 (X takes the value 1)

Table 9. Predefined mode 4 (X takes the value 1)

Table 10. Predefined mode 5 (X takes the value 1)

Table 11. Predefined mode 6 (X is 2)

Table 12. Predefined mode 7 (X takes the value 2)

Table 13. Predefined mode 8 (X takes the value 2)

Table 14. Predefined mode 9 (X takes the value 2)

Table 15. Predefined mode 10 (X takes the value 2)

Terminal side:

It is assumed that one UE is linked to two eNBs, and the MeNB and the SeNB are respectively two dual-link eNBs. The UE defines the common search space detection times of the MeNB and the SeNB in one of the following predefined manners after establishing the dual link.

In the CA, the UE needs to detect DCI Format1C and DCI Format 1A on the MPcell. At this time, the UE needs 2*(4+2)=12 tests in total. In the dual-link scenario, due to the existence of the SeNB, it is necessary to detect the common search space on the SPcell of the SeNB. In order to ensure that the total common search space does not exceed the number of detections of the R11 CA, it is necessary to ensure 2*(N0+N1)+X. *(N2+N3)<12 or 2*(N0+N1)+X*(N2+N3)=12. Where N0>0, N1>0, N2>0, N3>0, and the value of X is 1 or 2. If the UE pre-defined UE only detects DCI Format 1A on the SPcell, the value of X is 1 if the UE The predefined terminal detects DCI Format 1A and DCI Format 1C on the SPcell, then the value of X is 2.

According to the foregoing predefined manner rules, in the same manner as the above-mentioned base station configuration, the terminal may adopt the above several predefined manners (Table 6 to Table 15). The details will not be described again.

Embodiment 2

Base station side:

In the communication system of this embodiment, it is assumed that there are two dual-link eNBs of the MeNB and the SeNB, and there is one dual-link UE. After the UE establishes the double link, the eNB limits the number of detections by using the number of reserved cells (carriers) that are predefined to be the maximum supported. The preferred pre-defined, MeNB and SeNB are configured as the maximum number of serving cells of the UE is 4. At this time, the number of times the UE detects the control channel is 18 (24) (the number of common search spaces) + 4 * 32 (the number of UE-specific search spaces) = 146 (152) < 12 (the number of CA mechanism common search spaces) + 5 * 32 ( CA mechanism UE dedicated search space number) = 172. Ensure that the maximum number of detections supported by the terminal does not exceed the maximum number of detections by the CA mechanism.

Terminal side:

In this embodiment, after the UE establishes the dual link, the UE limits the number of detections by using a predefined maximum supported number of serving cells (carriers). The preferred pre-defined, the UE pre-defined MeNB and the SeNB are configured to the UE maximum serving cell. The number is 4. At this time, the number of times the UE detects the control channel is 18 (24) (the number of common search spaces) + 4 * 32 (the number of UE-specific search spaces) = 146 (152) < 12 (the number of CA mechanism common search spaces) + 5 * 32 ( CA mechanism UE dedicated search space number) = 172. Ensure that the maximum number of detections supported by the terminal does not exceed the maximum number of detections by the CA mechanism.

If the number of serving cells configured by the MeNB and the SeNB to the terminal is greater than 4, the terminal does not detect the control channel of the highest serving cell index according to the serving cell index, from low to high.

Embodiment 3

Base station side:

In the communication system of this embodiment, it is assumed that there are two dual-link eNBs of the MeNB and the SeNB, and there is one dual-link UE. After the UE establishes the double-link, the eNB adopts a preset number of detections of the UE-specific search space that limits the maximum Cell Index. Ensure that the number of times the UE detects the control channel does not exceed a predefined number of times.

When the total search times of the serving cell common search space and the dedicated search space configured by the MeNB and the SeNB for one terminal exceed the maximum supported detection times of the terminal, the number of blind detections of the UE-specific search space of the highest Cell Index is reduced.

Suppose the MeNB configures the number of serving cells of the UE to be 2, and the number of serving cells configured by the SeNB is 3. At this time, the MeNB supports 32 times or 48 (UEs supporting UL-MIMO) secondary terminal-specific detection, and supports 12 public search spaces. Detection, SeNB supports 32 times or 48 times of terminal-specific detection, supports 6 or 12 times of common search space detection, R11 terminal supports up to 12+32*5=172 or 12+48*5=252, dual-link terminal Supports up to 12+6(12)+12+32*5=178(184) or 12+6(12)+12+48*5=258(264). In this case, the number of UE-specific search space detection times of the serving cell that needs to limit the UE to detect the maximum CellIndex is 32-(178-172)=26 times or 48-(258-252)=42 times or 32-(184-172)=20. Times or 48-(264-252)=36 times.

Preferably, the base station may be configured to pre-define a terminal-specific search space that limits the terminal serving cell index. Preferably, the rules for dividing the maximum serving cell detection space number in this embodiment are as shown in Table 17. Preferably, the schemes shown in Table 18 to Table 28 can be adopted.

Table 17. Cell Index Maximum Service Cell Detection Space Number Division Scheme Rules

Wherein, N0>0, N1>0, N2>0, N3>0, and the value of X is 1 or 2. If the UE pre-defined UE detects only DCI Format 1A on the SPcell, the value of X is 1 if The UE pre-defined terminal detects DCI Format 1A and DCI Format 1C on the SPcell, and then the value of X is 2. The condition is satisfied: 2*(N0+N1+N2+N3)<32-6*X.

Table 18. Cell Index Maximum Service Cell Detection Space Number Division Scheme 1 (X=1)

Table 19. Cell Index Maximum Service Cell Detection Space Number Division Scheme 2 (X=1)

Table 20. Cell Index Maximum Service Cell Detection Space Number Division Scheme 3 (X=1)

Table 21. Cell Index Maximum Service Cell Detection Space Number Division Scheme 4 (X=1)

Table 22. Cell Index Maximum Serving Cell Detection Space Number Division Scheme 4 (X=1)

Table 23. Cell Index Maximum Service Cell Detection Space Number Division Scheme 1 (X=2)

Table 24. Cell Index Maximum Service Cell Detection Space Number Division Scheme 2 (X=2)

Table 25. Cell Index Maximum Service Cell Detection Space Number Division Scheme 3 (X=2)

Table 26. Cell Index Maximum Service Cell Detection Space Number Division Scheme 4 (X=2)

Table 27. Cell Index Maximum Service Cell Detection Space Number Division Scheme 4 (X=2)

Table 8. Cell Index Maximum Service Cell Detection Space Number Division Scheme 4 (X=2)

Terminal side

In the communication system of the present embodiment, it is assumed that there are two dual-link eNBs of the MeNB and the SeNB, and there is one dual-link UE. After the UE establishes the double-link, the UE adopts a preset number of detection times of the UE-specific search space that limits the highest Cell Index. To ensure that the number of times the UE detects the control channel does not exceed a predefined number of times.

The UE reduces the number of blind detections of the UE-specific search space of the highest Cell Index when the total number of detection times of the serving cell common search space and the dedicated search space configured by the MeNB and the SeNB exceeds the maximum supported detection times of the terminal.

It is assumed that the number of serving cells of the UE configured by the MeNB is 2, and the number of serving cells configured by the SeNB is 3, and the UE supports 32 times or 48 (UEs supporting UL-MIMO) secondary terminal-specific detection on the MeNB, and supports 12 public times. For search space detection, the UE supports 32 or 48 terminal-specific detections on the SeNB, and supports 6 or 12 common search space detections. The R11 terminal supports up to 12+32*5=172 or 12+48*5=252, dual links. The terminal supports up to 12+6(12)+12+32*5=178(184) or 12+6(12)+12+48*5=258(264). In this case, the number of UE-specific search space detection times of the serving cell that needs to limit the UE to detect the maximum CellIndex is 32-(178-172)=26 times or 48-(258-252)=42 times or 32-(184-172)=20. Times or 48-(264-252)=36 times.

Preferably, the terminal may be selected to pre-define a terminal-specific search space that limits the terminal serving cell index. Preferably, the rules for dividing the maximum serving cell detection space number in this embodiment are as shown in Table 17. Preferably, the schemes shown in Table 18 to Table 28 can be adopted.

Where N0>0, N1>0, N2>0, N3>0, and the value of X is 1 or 2. If the UE pre-defined UE only detects DCI Format 1A on the SPcell, the value of X is 1 if the UE The predefined terminal detects DCI Format 1A and DCI Format 1C on the SPcell, then the value of X is 2. The condition is satisfied: 2*(N0+N1+N2+N3)<32-6*X.

The terminal performs control channel detection according to the schemes shown in Tables 18 to 28 above.

Embodiment 4

Base station side:

The base station pre-defined terminal detects a subframe of a common search space corresponding to the primary serving cell of the non-primary base station, and the terminal does not detect terminal-specific search space control information of all the serving cells configured by the non-primary base station.

It is assumed that there are two dual-link eNBs, MeNB and SeNB. The MeNB is configured with N0 serving cells, and the SeNB is configured with N1 serving cells, where N0+N1=5, and N0>0, N1>0. The base station pre-defined terminal detects the subframe of the SeNBSPcell common search space, and does not detect the terminal-specific search space control information of the N1 serving cells configured by the SeNB.

Preferably, each serving cell of the SeNB does not send the terminal-specific control information in a subframe in which the corresponding terminal detects the SeNB SPcell common search space.

Terminal side:

The terminal pre-defined terminal detects a subframe of a common search space corresponding to the primary serving cell of the non-primary base station, and the terminal does not detect terminal-specific search space control information of all serving cells configured by the non-primary base station.

It is assumed that the terminal has two dual-link eNBs, MeNB and SeNB. The MeNB configures the terminal with N0 serving cells, and the SeNB configures the terminal with N1 serving cells, where N0+N1=5, and N0>0, N1>0. The terminal pre-defined terminal detects the subframe of the SeNB SPcell common search space control information, and does not detect the terminal-specific search space control information of the N1 serving cells configured by the SeNB.

Preferably, the terminal does not detect all the serving cell terminal proprietary control information of the terminal in the SeNB in the subframe in which the SeNB SPcell common search space control information is detected.

The common search space related information includes at least one of the following information: random access response related information (Msg2), system message information (SI), and paging message information (Paging).

Preferably, the common search space related information is random access response related information.

The terminal-specific control information includes at least one of the following control information: DCI Format 0, DCI Format 1A, DCI Format 1, DCI Format 1B, DCI Format 1D, DCI Format 2, DCI Format 2A, DCI Format 2B, DCI Format 2C, DCI Format 2D, DCI Format 3, DCI Format 3A, DCI Format 4.

Embodiment 5

When all the serving cells configured by the non-primary base station for the terminal are located in the same TAG, the base station pre-defined terminal detects the subframe of the common search space of the primary serving cell corresponding to the non-primary base station, and the terminal does not detect all the services configured by the non-primary base station. Terminal-specific search space control information for the cell.

Terminal side

When all the serving cells configured by the non-primary base station for the terminal are located in the same TAG, the terminal pre-defined terminal detects the subframe of the common search space of the primary serving cell corresponding to the non-primary base station, and the terminal does not detect all the services configured by the non-primary base station. Terminal-specific search space control information for the cell.

Embodiment 6

When all the serving cells configured by the non-primary base station for the terminal are located in the same TAG, the base station pre-defined terminal detects the subframe of the common search space corresponding to the primary serving cell of the non-primary base station, and the terminal does not detect the configuration of the non-primary base station. All or part of the control information of all serving cells in the TAG related to the common search space control information. The common search space control information related to the TAG means that the public common search space control information is used to indicate all the serving cell control information in the TAG.

It is assumed that there are two dual-link eNBs, MeNB and SeNB. The MeNB is configured with N0 serving cells, and the SeNB is configured with N1 serving cells. The SeNB further divides the N1 serving cells into: N11 serving cells are located at TAG0, and N12 serving cells are located at TAG1, N11+N12=N1, and N11>0. N12>0. Where N0+N1=5, and N0>0, N1>0. When the base station pre-defined terminal detects the subframe of the common search space of the SeNB SPcell, if the common search space control information is related to TAG0, the terminal does not detect all or part of the terminal-specific control information of all the serving cells in the SeNB TAG0.

Preferably, each serving cell in the SeNB TAG0 does not send the dedicated search space control information of the terminal in a subframe in which the corresponding terminal detects the common search space control information related to the TAG0 on the SeNB SPcell.

Terminal side

When all the serving cells configured by the non-primary base station for the terminal are located in the same TAG, the terminal pre-defined terminal detects the subframe of the common search space of the primary serving cell corresponding to the non-primary base station, and the terminal does not detect the configuration of the non-primary base station. All or part of the control information of all serving cells in the TAG related to the common search space control information. The common search space control information related to the TAG means that the public common search space control information is used to indicate all the serving cell control information in the TAG.

Example 7

Base station side

In an embodiment, when the non-primary base station generates a random access procedure corresponding to the primary serving cell, the base station pre-defined terminal does not detect the non-primary base station when detecting the subframe of the common search space of the primary serving cell corresponding to the non-primary base station. All terminal-specific control information of the serving cell.

It is assumed that there are two dual-link eNBs of MeNB and SeNB in the communication system. The MeNB is configured with N0 serving cells, and the SeNB is configured with N1 serving cells. The SeNB further divides the N1 serving cells into: N11 serving cells are located at TAG0, and N12 serving cells are located at TAG1, N11+N12=N1, and N11>0. N12>0. Where N0+N1=5, and N0>0, N1>0. For example, in FIG. 6, in a non-primary base station configuration of four carrier scenarios, one primary serving cell (Cell0) carrier and one non-primary serving cell (Cell1) carrier are located at TAG0, non-primary serving cell (Cell2) and non-primary serving cell. (Cell3) is located at TAG1. When at least one of the following events occurs in the TAG where the SPcell or SPcell is located:

1. In the random access process;

2. No uplink synchronization is maintained;

3. The terminal detects the Msg2 (RA-RNTI) of the SPcell or the SPcell TAG in the corresponding subframe;

4. The terminal detects the Msg4 information of the SPcell or the SPcell TAG in the corresponding subframe.

Then, the predefined terminal does not detect all or part of terminal specific control information of all serving cells in the SeNB.

Preferably, the base station pre-defined terminal does not detect all terminal-specific control information.

Terminal side

When the non-primary base station generates a random access procedure corresponding to the primary serving cell, the terminal pre-defines all the serving cells of the non-primary base station when detecting the subframe of the common search space of the primary serving cell corresponding to the non-primary base station. Terminal proprietary control information.

It is assumed that there are two dual-link eNBs, MeNB and SeNB. The MeNB configures the N0 serving cells for the terminal, and the SeNB configures the N1 serving cells for the terminal. The SeNB further divides the N1 serving cells into: N11 serving cells are located at TAG0, and N12 serving cells are located at TAG1, N11+N12=N1, N11>0, N12>0. Where N0+N1=5, and N0>0, N1>0. When at least one of the following events occurs in the TAG where the SPcell or SPcell is located:

1. In the random access process;

2. No uplink synchronization is maintained;

Then the terminal pre-defined does not detect all or part of the terminal-specific control information of all serving cells in the SeNB.

Preferably, the terminal pre-defined does not detect all terminal-specific control information.

Example eight

Base station side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the base station pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When all the serving cells in the TAG are in a self-scheduling manner, the base station pre-defined terminal does not detect downlink control information of the serving cell corresponding to the TAG and all DCI formats corresponding to the uplink control information, and the DCI format includes at least one of the following: DCI Format 0, DCI Format 1A, DCI Format 1, DCI Format 1B, DCI Format 1D, DCI Format 2, DCI Format 2A, DCI Format 2B, DCI Format 2C, DCI Format 2D, DCI Format 3, DCI Format 3A, DCI Format 4 .

Terminal side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the terminal pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When all the serving cells in the TAG are in a self-scheduling manner, the terminal pre-defined terminal does not detect downlink control information of the serving cell of the corresponding TAG and all DCI formats corresponding to the uplink control information, and the DCI format includes at least one of the following: DCI Format 0, DCI Format 1A, DCI Format 1, DCI Format 1B, DCI Format 1D, DCI Format 2, DCI Format 2A, DCI Format 2B, DCI Format 2C, DCI Format 2D, DCI Format 3, DCI Format 3A, DCI Format 4.

Example nine

This embodiment is explained by two examples.

Example 1:

Base station side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the base station pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When all the serving cells in the TAG adopt a self-scheduling manner, the base station pre-defined terminal does not detect all DCI formats corresponding to the uplink control information of the serving cell corresponding to the TAG, where the DCI is The format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, DCI Format 4.

Terminal side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the terminal pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When all the serving cells in the TAG are in a self-scheduling manner, the terminal pre-defined terminal does not detect all DCI formats corresponding to the uplink control information of the serving cell of the TAG, and the DCI format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, DCI Format 4.

Example 2:

Base station side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the base station pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When all the serving cells in the TAG are in a self-scheduling manner, the base station pre-defined terminal does not detect all DCI formats corresponding to the uplink control information of the serving cell of the corresponding TAG, and the DCI format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, DCI Format 4, and only detect DCI Format 1A of downlink control information.

Terminal side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the terminal pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When all the serving cells in the TAG are in a self-scheduling manner, the terminal pre-defined terminal does not detect all DCI formats corresponding to the uplink control information of the serving cell of the TAG, and the DCI format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, DCI Format 4, and only detect DCI Format 1A of downlink control information.

Example ten

This embodiment is explained by three examples.

Example 1:

Base station side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the base station pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When the non-primary base station corresponds to the serving cell in the TAG, the serving cell is a scheduled carrier, and the scheduling carrier that schedules the serving cell is located in another TAG that is performing a random access procedure. Or the scheduling carrier and the scheduled carrier are located in the same TAG, and the terminal does not detect downlink control information of the corresponding serving cell and all DCI formats corresponding to the uplink control information, where the DCI format includes at least one of the following: DCI Format 0, DCI Format 1A, DCI Format 1, DCI Format 1B, DCI Format 1D, DCI Format 2, DCI Format 2A, DCI Format 2B, DCI Format 2C, DCI Format 2D, DCI Format 3, DCI Format 3A, DCI Format 4.

Terminal side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the terminal pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When the non-primary base station corresponds to the serving cell in the TAG, the serving cell is a scheduled carrier, and the scheduling carrier that schedules the serving cell is located in another TAG that is performing a random access procedure. If the scheduling carrier and the scheduled carrier are located in the same TAG, the terminal pre-defined terminal does not detect downlink control information of the corresponding serving cell and all DCI formats corresponding to the uplink control information, where the DCI format includes at least the following One: DCI Format 0, DCI Format 1A, DCI Format 1, DCI Format 1B, DCI Format 1D, DCI Format 2, DCI Format 2A, DCI Format 2B, DCI Format 2C, DCI Format 2D, DCI Format 3, DCI Format 3A, DCI Format 4.

Example 2:

When the non-primary base station corresponds to the common search space control information of the TAG on the primary serving cell of the non-primary base station, when the non-primary base station corresponds to the serving cell in the TAG, the cross-carrier scheduling mode is adopted, where the serving cell is The scheduled carrier is scheduled, and the scheduling carrier that schedules the serving cell is located in another TAG that is performing a random access procedure or the scheduled carrier and the scheduled carrier are located in the same TAG, and the terminal does not detect the corresponding serving cell. All DCI formats corresponding to the uplink control information, the DCI format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, DCI Format 4.

Terminal side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the terminal pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When the non-primary base station corresponds to the serving cell in the TAG, the serving cell is a scheduled carrier, and the scheduling carrier that schedules the serving cell is located in another TAG that is performing a random access procedure. If the scheduling carrier and the scheduled carrier are located in the same TAG, the terminal pre-defined terminal does not detect all DCI formats corresponding to the uplink control information of the corresponding serving cell, and the DCI format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, DCI Format 4.

Example 3:

When the non-primary base station corresponds to the common search space control information of the TAG on the primary serving cell of the non-primary base station, when the non-primary base station corresponds to the serving cell in the TAG, the cross-carrier scheduling mode is adopted, where the serving cell is The scheduled carrier is scheduled, and the scheduling carrier that schedules the serving cell is located in another TAG that is performing a random access procedure or the scheduled carrier and the scheduled carrier are located in the same TAG, and the terminal does not detect the corresponding serving cell. All DCI formats corresponding to the uplink control information, the DCI format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, DCI Format 4, and only detects the DCI Format 1A of the downlink control information.

Terminal side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the terminal pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When the non-primary base station corresponds to the serving cell in the TAG, the serving cell is a scheduled carrier, and the scheduling carrier that schedules the serving cell is located in another TAG that is performing a random access procedure. If the scheduling carrier and the scheduled carrier are located in the same TAG, the terminal pre-defined terminal does not detect all DCI formats corresponding to the uplink control information of the corresponding serving cell, and the DCI format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, DCI Format 4, and only detect DCI Format 1A of downlink control information.

Embodiment 11

This embodiment is explained by three examples.

Example 1:

Base station side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the base station pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When the non-primary base station corresponds to the serving cell in the TAG, the serving cell is a scheduled carrier, and the scheduling carrier that schedules the serving cell is located in another TAG that is performing a random access procedure. Or the scheduling carrier and the scheduled carrier are located in the same TAG, and the terminal does not detect all DCI formats corresponding to the uplink control information of the corresponding serving cell, and the DCI format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, DCI Format 4.

Terminal side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the terminal pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When the non-primary base station corresponds to the serving cell in the TAG, the serving cell is a scheduled carrier, and the scheduling carrier that schedules the serving cell is located in another TAG that is performing a random access procedure. Or the scheduling carrier and the scheduled carrier are located in the same TAG, and the terminal does not detect all DCI formats corresponding to the uplink control information of the corresponding serving cell, and the DCI format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, DCI Format 4.

Example 2:

Base station side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the base station pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When the non-primary base station corresponds to the serving cell in the TAG, the serving cell is a scheduled carrier, and the scheduling carrier that schedules the serving cell is located in another TAG that is performing a random access procedure. Or the scheduling carrier and the scheduled carrier are located in the same TAG, and the terminal does not detect all DCI formats corresponding to the uplink control information of the corresponding serving cell, and the DCI format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, DCI Format 4, only detects DCI Format 1A of downlink control information.

Terminal side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the terminal pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When the non-primary base station corresponds to the serving cell in the TAG, the serving cell is a scheduled carrier, and the scheduling carrier that schedules the serving cell is located in another TAG that is performing a random access procedure. Or the scheduling carrier and the scheduled carrier are located in the same TAG, and the terminal does not detect all DCI formats corresponding to the uplink control information of the corresponding serving cell, and the DCI format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, DCI Format 4, only detects DCI Format 1A of downlink control information.

Example 3:

Base station side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the base station pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When the non-primary base station corresponds to the serving cell in the TAG, the serving cell is a scheduled carrier, and the scheduling carrier that schedules the serving cell is located in another TAG that is performing a random access procedure. Or the scheduling carrier and the scheduled carrier are located in the same TAG, and the terminal does not detect all DCI formats corresponding to the uplink control information of the corresponding serving cell, and the DCI format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, DCI Format 4, and DCI Format 1A, DCI Format 1, DCI Format 1B, DCI Format 1D, DCI Format 2, DCI Format 2A, DCI Format 2B, DCI Format 2C, which do not detect downlink control information, DCI Format 2D.

Terminal side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the terminal pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When the non-primary base station corresponds to the serving cell in the TAG, the serving cell is a scheduled carrier, and the scheduling carrier that schedules the serving cell is located in another TAG that is performing a random access procedure. Or the scheduling carrier and the scheduled carrier are located in the same TAG, and the terminal does not detect all DCI formats corresponding to the uplink control information of the corresponding serving cell, and the DCI format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, DCI Format 4, and DCI Format 1A, DCI Format 1, DCI Format 1B, DCI Format 1D, DCI Format 2, DCI Format 2A, DCI Format 2B, DCI Format 2C, which do not detect downlink control information, DCI Format 2D.

Example twelve

This embodiment is explained by two examples.

Example 1:

Base station side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the base station pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When the non-primary base station corresponds to the serving cell in the TAG, the cross-carrier scheduling mode is adopted, and the scheduling carrier is located in another TAG that does not have a random access procedure or does not need to perform a random access procedure in the TAG or uplink. In the TAG that is in synchronization, the terminal does not detect all DCI formats corresponding to the uplink control information of the corresponding serving cell, and the DCI format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, and DCI Format 4.

Terminal side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the terminal pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When the non-primary base station corresponds to the serving cell in the TAG, the cross-carrier scheduling mode is adopted, and the scheduling carrier is located in another TAG that does not have a random access procedure or does not need to perform a random access procedure in the TAG or uplink. In the TAG that keeps synchronization, all DCI formats corresponding to the uplink control information of the corresponding serving cell are not detected, and the DCI format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, DCI Format 4.

Example 2:

Base station side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the base station pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When the non-primary base station corresponds to the serving cell in the TAG, the cross-carrier scheduling mode is adopted, and the scheduling carrier is located in another TAG that does not have a random access procedure or does not need to perform a random access procedure in the TAG or uplink. In the TAG that keeps synchronization, the terminal does not detect the uplink control of the corresponding serving cell. All DCI formats corresponding to the information, the DCI format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, DCI Format 4, DCI Format 1A for detecting only downlink control information.

Terminal side

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the terminal pre-defined terminal detects the subframe of the common search space control information about the TAG on the primary serving cell of the non-primary base station, When the non-primary base station corresponds to the serving cell in the TAG, the cross-carrier scheduling mode is adopted, and the scheduling carrier is located in another TAG that does not have a random access procedure or does not need to perform a random access procedure in the TAG or uplink. In the TAG that keeps synchronization, all DCI formats corresponding to the uplink control information of the corresponding serving cell are not detected, and the DCI format includes at least one of the following: DCI Format 0, DCI Format 3, DCI Format 3A, DCI Format 4, and only detects DCI Format 1A of downlink control information.

Example thirteen

Base station side:

The base station pre-defined terminal detects only the DCI Format 1A or the DCI Format 1C when detecting the common search space control information of the non-primary base station, and preferably only detects the DCI Format 1A.

Terminal side:

When detecting the common search space control information of the non-primary base station, the terminal detects only the DCI Format 1A or the DCI Format 1C, and preferably only detects the DCI Format 1A.

Preferably, the common search space control information is random access response information (Msg2 or RAR).

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

As described above, the above-mentioned embodiments and the preferred embodiments can ensure that the maximum number of times that the terminal detects the control channel does not exceed the predefined number of detections of the terminal without affecting the average throughput of the terminal and the real-time service scheduling.

Claims

A method for configuring a control channel includes:

The base station groups the serving cells detected by the terminal according to the serving cell type and/or the subframe type;

The base station separately configures, for each packet, the detection control channel information required by the terminal to detect the control channel, where the detection control channel information corresponding to the at least two packets is different, and the detection control channel information includes at least one of the following:

Detecting candidate locations of the control channel;

Detecting a number of candidate locations of the control channel;

Detecting a type of the control channel;

The number of times the control channel is detected.
The method of claim 1 wherein

The grouping of the serving cells detected by the terminal includes: grouping the serving cells of the N base stations into S groups, where N and S are integers greater than 0, and 0<S<N+1;

When the base station separately configures the detection control channel information for each packet, the method further includes: configuring, by the base station, the control channel information of the corresponding group of the base station by using the independent predefined signaling or the high layer signaling.
The method according to claim 2, wherein the serving cell is divided into two groups, one group is a serving cell of a primary serving base station MeNB, and the other group is a serving cell of a non-primary serving base station SeNB, where the MeNB and the SeNB respectively The control channel information is detected by an independent predefined or higher layer signaling configuration.
The method of claim 3 wherein said control channel is a control channel of a common search space.
The method according to claim 1, wherein the base station groups the serving cells detected by the terminal according to the subframe type, including: the SeNB groups the different subframes, and the subframes in which the common search space exists on the SPCell are divided into one. Group, other sub-frames are divided into one group.
The method of claim 1, wherein the base station limits the maximum number of serving cells configured to the terminal to four.
The method according to claim 1, wherein the base station limits the serving cell corresponding to the highest cell index to have a smaller number of control channel detections, and ensures that the total number of detections of all cells does not exceed a predefined maximum number of detections.
The method according to claim 1, wherein the base station pre-defined terminal detects a subframe of a common search space corresponding to a primary serving cell of a non-primary base station, and does not detect a terminal-specific search of all serving cells configured by the non-primary base station. Space or terminal specific control information.
The method according to claim 1, wherein the base station pre-defined terminal detects a subframe of random access response information in a common search space of a serving cell configured by a non-primary base station, and the terminal does not detect the non-primary base station configuration Terminal-specific search space or terminal-specific control information for all serving cells.
The method according to claim 8 or 9, wherein the plurality of serving cells configured under the non-primary base station are located in the same time advance group TAG.
The method according to claim 1, wherein the base station pre-defined terminal detects a subframe of a common search space corresponding to the primary serving cell of the non-primary base station, and the terminal does not detect the common search space control configured by the non-primary base station All or part of the control information of all serving cells in the information-related TAG.
The method according to claim 11, wherein when the non-primary base station generates a random access procedure corresponding to the primary serving cell or when the common search space information related TAG is the TAG of the primary serving cell, the predefined terminal is in the subframe. The downlink control information of all the serving cells configured by the non-primary base station and the downlink control information format DCI Format corresponding to the uplink control information are not detected.
The method according to claim 11, wherein when the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the non-primary base station adopts a self-scheduling manner corresponding to all serving cells in the TAG. The predefined terminal does not detect the downlink control information of the corresponding serving cell and the DCI Format corresponding to the uplink control information.
The method according to claim 11, wherein when the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the non-primary base station uses the cross-carrier scheduling manner corresponding to the serving cell in the TAG. The serving cell is a scheduled carrier, and the scheduling carrier that schedules the serving cell is located in another TAG that is performing a random access procedure, or the scheduling carrier and the scheduled carrier are located in the same TAG, predefined The terminal does not detect the downlink control information of the corresponding serving cell and the DCI Format corresponding to the uplink control information.
The method according to claim 11, wherein when the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the non-primary base station uses the cross-carrier scheduling mode corresponding to the serving cell in the TAG. And the scheduling carrier is located in another TAG in which the random access procedure does not occur or in the TAG that does not need to perform the random access procedure or the TAG in which the uplink is synchronized, the predefined terminal does not detect the uplink control information of the corresponding serving cell. Corresponding DCI Format.
The method according to claim 11, wherein the base station pre-defined terminal detects a subframe of a common search space corresponding to the primary serving cell of the non-primary base station, and the terminal detects only DCI when detecting the common search space related information in the common search space. Format 1A or DCI Format 1C.
The method according to claim 11, wherein the common search space related information includes at least one of the following information: random access response related information Msg2, system message information SI, and paging message information Paging.
The method of claim 11, wherein the common search space related information comprises: random access response information.
A method for detecting a control channel, comprising:

The terminal groups the serving cells detected by the terminal according to the serving cell and/or the subframe type;

The terminal determines, for each packet, detection control channel information required for detecting a control channel, where the detection control channel information includes at least one of: detecting a candidate location of the control channel; and detecting a candidate of the control channel a number of locations; detecting a type of the control channel; detecting a number of times of the control channel; detecting control channel information corresponding to at least two packets is different;

The terminal detects a control channel of a serving cell in each packet according to the detected control channel information determined for each packet.
The method of claim 19, wherein

The terminal groups the serving cells detected by the terminal according to the serving cell, including: grouping the serving cells of the N base stations into S groups, where N and S are integers greater than 0, and 0<S<N+1;

When the terminal determines the detected control channel information of the detected control channel for each packet, the method further includes: configuring, by the terminal, the terminal detection control channel in each packet by independently pre-defining or receiving high-layer signaling. Detection of control channel information.
The method according to claim 20, wherein the grouping, by the terminal, the serving cells of the N base stations into the S groups comprises: the terminal grouping the serving cells corresponding to the primary serving base station MeNB into a group, which will be non-primary The serving cells corresponding to the serving base station SeNB are grouped into one group.
The method of claim 21 wherein said control channel is a control channel of a common search space.
The method according to claim 19, wherein the terminal groups the serving cell detected by the terminal according to the serving cell and/or the subframe type, including: the terminal groups the different subframes of the SeNB, and the public will exist on the SPCell. The sub-frames of the search space are divided into one group, and the other sub-frames are divided into one group.
The method of claim 19, wherein when the terminal determines the detection control channel information for each packet, the method further comprises: the terminal limiting the configured maximum number of serving cells to be 4.
The method according to claim 19, wherein the terminal restricts the serving cell corresponding to the lowest cell index to have a smaller number of control channel detections, and ensures that the total number of detections of all cells does not exceed a predefined maximum number of detections.
The method according to claim 19, wherein the terminal pre-defined terminal detects a subframe in a common search space of the non-primary base station corresponding to the primary serving cell, and the terminal does not detect the terminal dedicated to all serving cells configured by the non-primary base station. Search space or terminal-specific control information.
The method according to claim 19, wherein the terminal pre-defined terminal detects a subframe of random access response information in a common search space of a serving cell configured by a non-primary base station, and the terminal does not detect the non-primary base station configuration Terminal-specific search space or terminal-specific control information for all serving cells.
The method according to claim 26 or 27, wherein the plurality of serving cells configured under the non-primary base station are located in the same time advance group TAG.
The method according to claim 19, wherein the terminal pre-defined terminal detects a subframe of a common search space corresponding to the primary serving cell of the non-primary base station, and the terminal does not detect the common search space control configured by the non-primary base station All or part of the control information of all serving cells in the information-related TAG.
The method according to claim 29, wherein when the non-primary base station generates a random access procedure corresponding to the primary serving cell or when the common search space information related TAG is the TAG of the primary serving cell, the predefined terminal is in the subframe. The downlink control information of all the serving cells configured by the non-primary base station and the DCI Format corresponding to the uplink control information are not detected.
The method according to claim 29, wherein when the non-primary base station is not in the random access procedure or the uplink is kept in synchronization, the non-primary base station adopts a self-scheduling manner corresponding to all serving cells in the TAG. The terminal is not configured to detect the downlink control information of the corresponding serving cell and the DCI Format corresponding to the uplink control information.
The method according to claim 29, wherein when the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the non-primary base station corresponds to the serving cell in the TAG by using cross-carrier scheduling. The serving cell is a scheduled carrier, and the scheduling carrier that schedules the serving cell is located in another TAG that is performing a random access procedure, or the scheduling carrier and the scheduled carrier are located in the same TAG, predefined The terminal does not detect the downlink control information of the corresponding serving cell and the DCI Format corresponding to the uplink control information.
The method according to claim 29, wherein when the non-primary base station corresponds to the primary serving cell not in the random access procedure or the uplink keeps synchronization, when the non-primary base station corresponds to the serving cell in the TAG, the cross-carrier scheduling mode is adopted. And the scheduling carrier is located in another TAG that does not have a random access procedure or in a TAG that does not need to perform a random access procedure or is in an TAG that is synchronized in the uplink, and the predefined terminal does not detect the uplink control information corresponding to the corresponding serving cell. DCI Format.
The method according to claim 29, wherein the terminal pre-defined terminal detects a subframe of a common search space corresponding to the primary serving cell at the non-primary base station, and when the terminal detects the common search space related information in the common search space, Only detect DCI Format 1A or DCI Format 1C.
The method according to claim 29, wherein said common search space related information includes at least one of the following information: random access response related information Msg2, system message information SI, and paging message information Paging.
The method of claim 29, wherein the common search space related information comprises: random access response information.
A device for configuring a control channel, comprising:

a grouping module, configured to group the serving cells detected by the terminal according to the serving cell type and/or the subframe type;

The configuration module is configured to separately configure, for each packet, detection control channel information required by the terminal to detect the control channel, where the detection control channel information corresponding to the at least two packets is different, and the detection control channel information includes at least one of the following:

Detecting candidate locations of the control channel;

Detecting a number of candidate locations of the control channel;

Detecting a type of the control channel;

The number of times the control channel is detected.
The device according to claim 37, wherein

The grouping module is configured to group the serving cells of the N base stations into S groups, where N and S are integers greater than 0, and 0<S<N+1;

The configuration module is further configured to configure the detection control channel information of the detection control channel of the corresponding group of the base station by the terminal by independent predefined signaling or higher layer signaling.
The apparatus according to claim 37, wherein said grouping module is configured to group different subframes of the non-primary serving base station SeNB, and the subframes in which the common search space exists on the SPCell are grouped into one group, and other subframes are divided into groups. For a group.
The apparatus of claim 37, wherein the apparatus further comprises: a control module configured to limit the maximum number of serving cells configured to the terminal to four.
The apparatus according to claim 40, wherein the control module is further configured to limit the serving cell corresponding to the highest cell index to have a smaller number of control channel detections, and ensure that the total number of detections of all cells does not exceed a predefined maximum number of detections. .
The apparatus of claim 37, wherein the configuration module is further configured to configure at least one of the following by a predefined configuration:

The predefined terminal detects a subframe in a common search space corresponding to the primary serving cell of the non-primary base station, and does not detect a terminal-specific search space or terminal-specific control information of all serving cells configured by the non-primary base station;

The predefined terminal detects a subframe of the random access response information in the common search space of the serving cell configured by the non-primary base station, and the terminal does not detect the terminal-specific search space or the terminal-specific control information of all the serving cells configured by the non-primary base station ;

The predefined terminal detects a subframe in a common search space of the primary serving cell corresponding to the non-primary base station, and the terminal does not detect all or part of all the serving cells in the TAG related to the common search space control information configured by the non-primary base station information.
The apparatus of claim 42, wherein the configuration module is further configured to configure at least one of the following information by a predefined definition:

When the non-primary base station generates a random access procedure corresponding to the primary serving cell or when the common search space information related TAG is the TAG of the primary serving cell, the predefined terminal does not detect all the configurations of the non-primary base station in the subframe. The downlink control information format DCI Format corresponding to the downlink control information of the serving cell and the uplink control information;

When the non-primary base station is not in the random access procedure or the uplink is kept in synchronization, the non-primary base station adopts a self-scheduling manner for all the serving cells in the TAG, and the predefined terminal does not detect the downlink of the corresponding serving cell. The DCI Format corresponding to the control information and the uplink control information;

When the non-primary base station is not in the random access procedure or the uplink keeps the synchronization, the non-primary base station uses the cross-carrier scheduling mode corresponding to the serving cell in the TAG, where the serving cell is the scheduled carrier, and The scheduling carrier that schedules the serving cell is located in another TAG that is performing a random access procedure, or the scheduling carrier and the scheduled carrier are located in the same TAG, and the predefined terminal does not detect downlink control information of the corresponding serving cell. a DCI Format corresponding to the uplink control information;

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the non-primary base station uses the cross-carrier scheduling mode corresponding to the serving cell in the TAG, and the scheduling carrier is located in another one. The pre-defined terminal does not detect the DCI Format corresponding to the uplink control information of the corresponding serving cell in the TAG of the random access procedure or in the TAG that does not need to perform the random access procedure or the uplink synchronization.

The predefined terminal detects a subframe in a common search space corresponding to the primary serving cell of the non-primary base station, and when detecting the common search space related information in the common search space, the terminal detects only DCI Format 1A or DCI Format 1C.
A control device for detecting a channel, comprising:

a grouping module, configured to group the serving cells detected by the terminal according to the serving cell and/or the subframe type;

a determining module, configured to separately determine, for each packet, detection control channel information required by the control channel, the detection control channel information comprising at least one of: detecting a candidate location of the control channel; detecting the control channel a number of candidate locations; detecting a type of the control channel; detecting a number of times of the control channel; wherein, the detection control channel information corresponding to the at least two packets is different;

The detecting module is configured to detect a control channel of the serving cell in each packet according to the detected control channel information determined by the determining module for each packet.
The device according to claim 44, wherein

The grouping module is configured to group the serving cells of the N base stations into S groups, where N and S are integers greater than 0, and 0<S<N+1;

The determining module is further configured to configure the detection control channel information of the terminal detection control channel in each packet by independently pre-defining or receiving high-level signaling.
The apparatus according to claim 44, wherein said grouping module is further configured to group different subframes of the non-primary serving base station SeNB, and divide the subframes in which the common search space exists on the SPCell into one group and the other sub-frames. Frames are divided into groups.
The apparatus of claim 44, further comprising: a control module configured to limit the maximum number of serving cells configured for the terminal to four.
The apparatus according to claim 47, wherein the control module is further configured to limit the serving cell corresponding to the lowest cell index to have a smaller number of control channel detections, and ensure that the total number of detections of all cells does not exceed a predefined maximum number of detections. .
The apparatus of claim 44, wherein the configuration module is further configured to configure information of at least one of the following in a predefined manner:

The predefined terminal detects a subframe in a common search space of the primary serving cell corresponding to the non-primary base station, and the terminal does not detect the terminal-specific search space or the terminal-specific control information of all the serving cells configured by the non-primary base station;

The predefined terminal detects a subframe of the random access response information in the common search space of the serving cell configured by the non-primary base station, and the terminal does not detect the terminal-specific search space or the terminal-specific control information of all the serving cells configured by the non-primary base station ;

The predefined terminal detects a subframe of a common search space corresponding to the primary serving cell of the non-primary base station, and the terminal does not detect all or part of all the serving cells in the TAG related to the common search space control information configured by the non-primary base station information.
The apparatus of claim 49, wherein the configuration module is further configured to configure information of at least one of the following in a predefined manner:

When the non-primary base station generates a random access procedure corresponding to the primary serving cell or when the common search space information related TAG is the TAG of the primary serving cell, the predefined terminal does not detect all the configurations of the non-primary base station in the subframe. The downlink control information of the serving cell and the DCI Format corresponding to the uplink control information;

When the non-primary base station is not in the random access procedure or the uplink is kept in synchronization, the non-primary base station adopts a self-scheduling manner for all the serving cells in the TAG, and the predefined terminal does not detect the downlink control of the corresponding serving cell. DCI Format corresponding to the information and the uplink control information;

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, the non-primary base station corresponds to the serving cell in the TAG, and the serving cell is the scheduled carrier, and The scheduling carrier that schedules the serving cell is located in another TAG that is performing a random access procedure, or the scheduling carrier and the scheduled carrier are located in the same TAG, and the predefined terminal does not detect downlink control information of the corresponding serving cell. a DCI Format corresponding to the uplink control information;

When the non-primary base station is not in the random access procedure or the uplink keeps synchronization, when the non-primary base station corresponds to the serving cell in the TAG, the cross-carrier scheduling mode is adopted, and the scheduling carrier is located in another one without random occurrence. In the TAG of the access procedure, or in the TAG in which the random access procedure is not required, or the uplink is synchronized, the predefined terminal does not detect the DCI Format corresponding to the uplink control information of the corresponding serving cell;

The predefined terminal detects a subframe in a common search space corresponding to the primary serving cell of the non-primary base station, and when detecting the common search space related information in the common search space, the terminal detects only DCI Format 1A or DCI Format 1C.
A control system for a control channel, comprising: a base station and a terminal, wherein the base station comprises the apparatus of any one of claims 37 to 43, the terminal comprising the one of claims 44 to 50 Device.