CN114828051A - User equipment and method and device for detecting physical downlink control channel thereof - Google Patents

Abstract

The method for detecting the user equipment and the physical downlink control channel thereof comprises the following steps: determining a configuration of an aggregation level combination or a PDCCH candidate combination; determining an aggregation level combination or a PDCCH candidate combination according to the configuration of the aggregation level combination or the PDCCH candidate combination, wherein the aggregation level or the PDCCH candidate in the aggregation level combination or the PDCCH candidate combination is used as a member aggregation level or a member PDCCH candidate; and blind detecting PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination according to the configuration of the aggregation level combination or the PDCCH candidate combination. The invention improves the robustness of the PDCCH, does not generate too large continuous resources corresponding to the PDCCH with a certain high aggregation level, eliminates the conflict between the improvement of the robustness of the PDCCH and the blockage of the PDCCH resources allocated by the network, and can well take the two aspects into account.

Description

User equipment and method and device for detecting physical downlink control channel thereof

This application is a divisional application for a patent with an application date of April 4, 2018, an application number of 201810306209.9, and an invention title of "User Equipment and its Physical Downlink Control Channel Detection Method and Device".

technical field

The present invention relates to the technical field of wireless communication, and in particular, to a method and apparatus for detecting a user equipment and a physical downlink control channel thereof.

Background technique

A PDCCH (Physical Downlink Control Cnannel, Physical Downlink Control Channel) is carried on a Control Resource Set (Control Resource Set, CORESET). The PDCCH is composed of one or more CCEs (Control Channel Element, control channel element). One CCE is composed of multiple REGs (Resource Element Group, resource element group) (6 by default), and one REG is equivalent to one Physical Resource Block (Physical Resource Block, PRB) on one OFDM symbol.

In the process of wireless communication, the user equipment needs to detect the PDCCH in the search space (Search space). Since the user equipment usually cannot predict in advance where the information to be received is located, the above-mentioned process of detecting the PDCCH is usually blind detection, that is, blind detection of possible PDCCH candidates.

A search space may contain one or more aggregation levels (Aggregation levels), for example, the aggregation levels may be 1, 2, 4, 8, etc., and one aggregation level may contain zero or one or more PDCCH candidates, each The starting CCE position of the PDCCH candidate can be calculated by the formula.

In an Ultra Reliable Low Latency Communication (Ultra Reliable Low Latency Communication, URLLC) scenario, it is usually necessary to improve the robustness of the PDCCH. A higher aggregation level is beneficial to improve the robustness of the PDCCH, but at the same time it will also cause the network to block the allocation of PDCCH resources. This is because the PDCCH resources (CCE resources) are contiguous, and a large contiguous resource corresponding to a PDCCH of a certain high aggregation level will cause other PDCCHs to have no contiguous resources.

In the prior art, only a compromise can be made between improving the robustness of the PDCCH and avoiding the blockage of the PDCCH resources allocated by the network, and it is impossible to achieve better performance in the above two aspects at the same time.

SUMMARY OF THE INVENTION

The technical problem solved by the present invention is: how to improve the robustness of the PDCCH while avoiding the blockage of the PDCCH resources allocated by the network.

In order to solve the above technical problem, an embodiment of the present invention provides a method for detecting a physical downlink control channel, including:

Determine the configuration of aggregation level combinations or PDCCH candidate combinations;

According to the configuration of the aggregation level combination or the PDCCH candidate combination, determine the aggregation level combination or the PDCCH candidate combination, and the aggregation level or PDCCH candidate in the aggregation level combination or the PDCCH candidate combination as the member aggregation level or the member PDCCH candidate;

According to the configuration of the aggregation level combination or the PDCCH candidate combination, the PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination are blindly detected.

Optionally, the aggregation level combination or the PDCCH candidate combination consists of 2 to 3 member aggregation levels or member PDCCH candidates.

Optionally, the member aggregation level or the PDCCH candidate corresponding to the member PDCCH candidate is not independently detected in the blind detection process, or the member aggregation level or the member PDCCH candidate corresponding to the member aggregation level or the member PDCCH candidate is allowed to be independently detected in the blind detection process. PDCCH candidate.

Optionally, the aggregation level combination or PDCCH candidate combination consists of several member aggregation levels or member PDCCH candidates of the same size, or the aggregation level combination or PDCCH candidate combination consists of several member aggregation levels or member PDCCH candidates of different sizes.

Optionally, the configuration of the aggregation level combination or the PDCCH candidate combination is determined by the member aggregation level or the search space configuration corresponding to the member PDCCH candidates.

Optionally, the search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination have the same slot period and/or offset.

Optionally, the search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination have the same start symbol in the time slot.

Optionally, the search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination have different start positions, but the time interval of the start positions is less than X symbols.

Optionally, the CCE index of the PDCCH candidate corresponding to the aggregation level combination or the PDCCH candidate combination is determined by the CCE indexes of the PDCCH candidates corresponding to several member aggregation levels or member PDCCH candidates included in the aggregation level combination or the PDCCH candidate combination. .

Optionally, the PDCCH candidates corresponding to the aggregation level combination or PDCCH candidate combination are composed of several member aggregation levels or PDCCH candidates corresponding to the member PDCCH candidates included in the aggregation level combination or PDCCH candidate combination indicated by the network side, or The PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination automatically correspond to the PDCCH candidates corresponding to any number of member aggregation levels or member PDCCH candidates.

Optionally, when there are any two member aggregation levels or the CCE indexes of the PDCCH candidates corresponding to the member PDCCH candidates overlap, the overlapping CCE index is only counted as one CCE index, or when any two member aggregation levels or member PDCCH candidates overlap. When the CCE indices of the PDCCH candidates corresponding to the PDCCH candidates overlap, the two member aggregation levels or the aggregation level combinations to which the member PDCCH candidates belong or the PDCCH candidates corresponding to the PDCCH candidate combinations will not be regarded as one PDCCH candidate.

Optionally, the configuration of determining the aggregation level combination or the PDCCH candidate combination is to determine the aggregation level combination or the PDCCH candidate combination according to the instruction of the base station.

Optionally, the length of the mother code encoded by the Polar code of the PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination is 512.

In order to solve the above technical problem, an embodiment of the present invention further provides a detection device for a physical downlink control channel, including: a configuration unit, a combination unit, and a detection unit; wherein:

a configuration unit, adapted to determine the configuration of the aggregation level combination or the PDCCH candidate combination;

a combining unit, adapted to determine an aggregation level combination or a PDCCH candidate combination according to the configuration of the aggregation level combination or the PDCCH candidate combination, and the aggregation level or PDCCH candidate in the aggregation level combination or the PDCCH candidate combination as a member aggregation level or a member PDCCH candidate;

The detection unit is adapted to blindly detect the PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination according to the configuration of the aggregation level combination or the PDCCH candidate combination.

Optionally, the aggregation level combination or the PDCCH candidate combination consists of 2 to 3 member aggregation levels or member PDCCH candidates.

Optionally, the member aggregation level or the PDCCH candidate corresponding to the member PDCCH candidate is not independently detected in the blind detection process, or the member aggregation level or the member PDCCH candidate corresponding to the member aggregation level or the member PDCCH candidate is allowed to be independently detected in the blind detection process. PDCCH candidate.

Optionally, the aggregation level combination or PDCCH candidate combination consists of several member aggregation levels or member PDCCH candidates of the same size, or the aggregation level combination or PDCCH candidate combination consists of several member aggregation levels or member PDCCH candidates of different sizes.

Optionally, the configuration of the aggregation level combination or the PDCCH candidate combination is determined by the member aggregation level or the search space configuration corresponding to the member PDCCH candidates.

Optionally, the search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination have the same slot period and/or offset.

Optionally, the search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination have the same start symbol in the time slot.

Optionally, the search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination have different start positions, but the time interval of the start positions is less than X symbols.

Optionally, the CCE index of the PDCCH candidate corresponding to the aggregation level combination or the PDCCH candidate combination is determined by the CCE indexes of the PDCCH candidates corresponding to several member aggregation levels or member PDCCH candidates included in the aggregation level combination or the PDCCH candidate combination. .

Optionally, the PDCCH candidate corresponding to the aggregation level combination or PDCCH candidate combination is composed of several member aggregation levels or PDCCH candidates corresponding to the member PDCCH candidates included in the aggregation level combination or PDCCH candidate combination indicated by the network side, or The PDCCH candidates corresponding to the aggregation level combination or PDCCH candidate combination automatically correspond to the PDCCH candidates corresponding to any number of member aggregation levels or member PDCCH candidates included in the aggregation level combination or PDCCH candidate combination.

Optionally, when there are any two member aggregation levels or the CCE indexes of the PDCCH candidates corresponding to the member PDCCH candidates overlap, the overlapping CCE index is only counted as one CCE index, or when any two member aggregation levels or member PDCCH candidates overlap. When the CCE indices of the PDCCH candidates corresponding to the PDCCH candidates overlap, the two member aggregation levels or the aggregation level combinations to which the member PDCCH candidates belong or the PDCCH candidates corresponding to the PDCCH candidate combinations will not be regarded as one PDCCH candidate.

Optionally, the configuration of determining the aggregation level combination or the PDCCH candidate combination is to determine the aggregation level combination or the PDCCH candidate combination according to the instruction of the base station.

Optionally, the length of the mother code encoded by the Polar code of the PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination is 512.

In order to solve the above technical problem, an embodiment of the present invention further provides a user equipment, including the above-mentioned device for detecting a physical downlink control channel.

Optionally, the user equipment is a mobile phone terminal.

Compared with the prior art, the technical scheme of the present invention has the following beneficial effects:

According to the instruction of the base station, determine the configuration of aggregation level combination or PDCCH candidate combination, according to the configuration of aggregation level combination or PDCCH candidate combination, determine the aggregation level combination or PDCCH candidate combination, the aggregation level or PDCCH candidate in the prior art is used as the aggregation level combination Or "member aggregation level" or "member PDCCH candidate" in the PDCCH candidate combination, according to the configuration of the aggregation level combination or PDCCH candidate combination, blindly detect the PDCCH candidates corresponding to the aggregation level combination or PDCCH candidate combination, thereby improving the PDCCH on the one hand. At the same time, there will be no PDCCH with a high aggregation level corresponding to too large continuous resources, which eliminates the conflict between improving the robustness of the PDCCH and avoiding the blockage of the network allocation of PDCCH resources, which can be well balanced. the above two aspects.

Further, the aggregation level combination or the PDCCH candidate combination may be composed of several member aggregation levels or member PDCCH candidates of the same or different sizes, and a trade-off between system complexity and system flexibility may be made as required.

Further, the CCE index of the PDCCH candidate corresponding to the aggregation level combination or the PDCCH candidate combination is determined by the CCE indexes of the PDCCH candidates corresponding to several member aggregation levels or member PDCCH candidates included in the aggregation level combination or the PDCCH candidate combination, In this case, the resources of the PDCCH candidates corresponding to the aggregation level combination or PDCCH candidate combination actually reuse the resources of the PDCCH candidates corresponding to the member aggregation levels or member PDCCH candidates included in the aggregation level combination or PDCCH candidate combination , which is beneficial to simplify the complexity of the PDCCH resource allocation of the base station, and also simplifies the blind detection complexity of the user equipment.

Further, when the CCE indexes of the PDCCH candidates corresponding to any two member aggregation levels or member PDCCH candidates overlap, the overlapping CCE index is only counted as one CCE index, or when any two member aggregation levels or member PDCCH candidates overlap. When the CCE indexes of the corresponding PDCCH candidates overlap, the two member aggregation levels or the aggregation level combination to which the member PDCCH candidates belong or the PDCCH candidates corresponding to the PDCCH candidate combination will not be regarded as a PDCCH candidate, which can simplify the scheduling of the base station.

Description of drawings

1 is a flowchart of a method for detecting a physical downlink control channel in an embodiment of the present invention;

FIG. 2 is a structural block diagram of an apparatus for detecting a physical downlink control channel in an embodiment of the present invention.

Detailed ways

According to the analysis of the background technology, a higher aggregation level is conducive to improving the robustness of the PDCCH, but at the same time it will also lead to the blockage of the network allocation of PDCCH resources. A compromise is made between the blocking of the network allocating PDCCH resources, and it is impossible to achieve better performance in the above two aspects at the same time.

The technical solution provided by the present invention is to take into account the above two aspects at the same time, that is, to improve the robustness of the PDCCH, and at the same time, it can avoid the blockage of the PDCCH resources allocated by the network.

Specifically, after research, the inventor proposes to define the concept of "aggregation level combination" or "PDCCH candidate combination", and combine several aggregation levels or PDCCH candidates into one aggregation level according to the configuration of the aggregation level combination or PDCCH candidate combination The combination or PDCCH candidate combination, the aggregation level or PDCCH candidate in the prior art is used as the aggregation level combination or the "member aggregation level" or "member PDCCH candidate" in the PDCCH candidate combination, and the corresponding aggregation level combination or PDCCH candidate combination is blindly detected. PDCCH candidates, on the one hand, improve the robustness of PDCCH, and at the same time, there will be no PDCCH with a high aggregation level corresponding to too large continuous resources, which eliminates the need to improve the robustness of PDCCH and avoid network allocation of PDCCH resources. The conflict between the two aspects can be well balanced.

In order for those skilled in the art to better understand and implement the present invention, the following detailed description will be given through specific embodiments with reference to the accompanying drawings.

Example 1

As described below, an embodiment of the present invention provides a method for detecting a physical downlink control channel.

Referring to the flowchart of the detection method of the physical downlink control channel shown in FIG. 1, the following detailed description is given through specific steps:

S101. Determine the configuration of aggregation level combinations or PDCCH candidate combinations.

The configuration of the aggregation level combination or the PDCCH candidate combination may be determined by the member aggregation level or the search space configuration corresponding to the member PDCCH candidates.

The search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination have the same slot period and/or offset;

The search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination have the same start symbol in the time slot;

The search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination have different start positions, but the time interval of the start positions is less than X symbols.

The CCE index of the PDCCH candidate corresponding to the aggregation level combination or PDCCH candidate combination is determined by the CCE indexes of several member aggregation levels or member PDCCH candidates corresponding to the aggregation level combination or PDCCH candidate combination. In this case, the resources of the PDCCH candidates corresponding to the aggregation level combination or PDCCH candidate combination actually reuse several PDCCH candidates corresponding to member aggregation levels or member PDCCH candidates included in the aggregation level combination or PDCCH candidate combination resources, which is beneficial to simplify the complexity of the PDCCH resource allocation of the base station, and also simplifies the complexity of the blind detection of the user equipment.

Specifically, the CCE index of the PDCCH candidate corresponding to each member aggregation level or member PDCCH candidate is determined by the starting position of the CCE and the member aggregation level or the size of the member PDCCH candidate. A member aggregation level or member PDCCH candidate may have several PDCCH candidates. For a PDCCH candidate corresponding to a certain aggregation level combination or PDCCH candidate combination, the CCE index of the PDCCH candidate corresponding to the aggregation level combination or PDCCH candidate combination is given by: The aggregation level combination or the PDCCH candidate combination includes several member aggregation levels or the CCE index of the PDCCH candidates corresponding to the member PDCCH candidates. which member aggregation levels or the CCE indexes of the PDCCH candidates corresponding to the member PDCCH candidates).

In one embodiment, as indicated by the network side, the PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination are corresponding to 2 or 3 member aggregation levels or member PDCCH candidates included in the aggregation level combination or the PDCCH candidate combination. composition of PDCCH candidates.

In another embodiment, the PDCCH candidates corresponding to the aggregation level combination or PDCCH candidate combination automatically correspond to the PDCCHs corresponding to any 2 or 3 member aggregation levels or member PDCCH candidates included in the aggregation level combination or PDCCH candidate combination candidate index. For example, the member aggregation level or member PDCCH candidate A has P PDCCH candidates, and the member aggregation level or member PDCCH candidate B has Q PDCCH candidates, then the above member aggregation level or member PDCCH candidate A and member aggregation level or member PDCCH candidate B are included. There are automatically P*Q combinations for the PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination.

Since the CCE indexes of any two member aggregation levels or PDCCH candidates corresponding to the member PDCCH candidates can be calculated by a formula (the formula belongs to the prior art), which is random, the overlapping of CCE indexes may occur.

In this embodiment, when any two member aggregation levels or CCE indices of PDCCH candidates corresponding to member PDCCH candidates overlap, the overlapping CCE index is only counted as one CCE index, or when any two member aggregation levels or member PDCCH candidates overlap When the CCE indexes of the PDCCH candidates corresponding to the PDCCH candidates completely overlap, the two member aggregation levels or the aggregation level combination to which the member PDCCH candidates belong or the PDCCH candidate corresponding to the PDCCH candidate combination will not be regarded as a PDCCH candidate, which can simplify the base station's schedule.

In a specific implementation, the base station may allocate the configuration of the aggregation level combination or the PDCCH candidate combination to each user equipment, and the user equipment receives the configuration of the aggregation level combination or the PDCCH candidate combination sent by the base station, so as to determine the aggregation level combination or the PDCCH candidate combination configuration. configure.

After determining the configuration of the aggregation level combination or the PDCCH candidate combination, the user equipment can determine the aggregation level combination or the PDCCH candidate combination according to the configuration of the aggregation level combination or the PDCCH candidate combination, and perform blind blinding according to the configuration of the aggregation level combination or the PDCCH candidate combination. checked.

S102: Determine the aggregation level combination or the PDCCH candidate combination according to the configuration of the aggregation level combination or the PDCCH candidate combination.

As mentioned above, the inventors have defined the concept of "aggregation level combination" or "PDCCH candidate combination". specific,

Combining several aggregation levels (that is, aggregation levels in the prior art) or PDCCH candidates (that is, PDCCH candidates in the prior art) into one aggregation level combination or PDCCH candidate combination, so as to determine the aggregation level combination or PDCCH candidate combination, The aggregation level combination or the aggregation level in the PDCCH candidate combination (ie the aggregation level in the prior art) or the PDCCH candidate (ie the PDCCH candidate in the prior art) is used as the member aggregation level or the member PDCCH candidate.

The PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination use the resources of the PDCCH candidates corresponding to several aggregation levels.

The aggregation level combination or the PDCCH candidate combination may be formed by combining several member aggregation levels or member PDCCH candidates of the same size, which can reduce the system complexity. for example,

In a typical example, one aggregation level combination or PDCCH candidate combination may be formed by 2 or 3 member aggregation level combinations or PDCCH candidate combinations with a size of 4;

In a typical example, one aggregation level combination or PDCCH candidate combination may be formed by two member aggregation level combinations or PDCCH candidate combinations with a size of 8.

In a typical example, one aggregation level combination or PDCCH candidate combination may be formed by three member aggregation level combinations or PDCCH candidate combinations with a size of 8. At this time, the size of the aggregation level combination or the PDCCH candidate combination is 24, which is greater than 16, which can satisfy a scenario requiring extremely high reliability or a scenario requiring extremely large coverage.

The aggregation level combination or the PDCCH candidate combination may also be formed by combining several member aggregation levels or member PDCCH candidates of different sizes, which increases the system complexity but improves the system flexibility. for example,

In a typical example, one aggregation level combination or PDCCH candidate combination may be composed of a member aggregation level or member PDCCH candidate of size 4 and a member aggregation level combination or PDCCH candidate combination of size 8;

In a typical example, one aggregation level combination or PDCCH candidate combination may be composed of two member aggregation levels or member PDCCH candidates of size 4 and one member aggregation level combination or PDCCH candidate combination of size 8;

In a typical example, one aggregation level combination or PDCCH candidate combination may be composed of one member aggregation level or member PDCCH candidate with a size of 4 and two member aggregation level combinations or PDCCH candidates with a size of 8. At this time, the size of the aggregation level combination or the PDCCH candidate combination is 20, which is greater than 16, which can satisfy a scenario requiring extremely high reliability or a scenario requiring extremely large coverage.

In a typical example, one aggregation level combination or PDCCH candidate combination may be composed of one member aggregation level or member PDCCH candidate with a size of 8 and one member aggregation level combination or PDCCH candidate with a size of 16. At this time, the size of the aggregation level combination or the PDCCH candidate combination is 24, which is greater than 16, which can satisfy a scenario requiring extremely high reliability or a scenario requiring extremely large coverage.

It can be seen from the above description of the technical solutions that, in this embodiment, the aggregation level combination or PDCCH candidate combination may be composed of several member aggregation levels or member PDCCH candidates of the same or different sizes, which can be adjusted according to requirements in terms of system complexity and system complexity. A trade-off between flexibility.

The "size" of an aggregation level mentioned in this application refers to the "number of CCEs" in the aggregation level.

In this embodiment, the length of the mother code encoded by the Polar code of the PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination is 512.

S103, according to the configuration of the aggregation level combination or the PDCCH candidate combination, blindly detect the PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination.

In one embodiment, the member aggregation level or the PDCCH candidates corresponding to the member PDCCH candidates are set so that they cannot be independently detected, that is, the member aggregation level or the member PDCCH candidates will not be independently detected in the blind detection process. The corresponding PDCCH candidate.

In another embodiment, the blind detection process may also allow independent detection of member aggregation levels or PDCCH candidates corresponding to member PDCCH candidates.

It can be seen from the above description of the technical solutions: in this embodiment, the configuration of the aggregation level combination or the PDCCH candidate combination is determined according to the instruction of the base station, and the aggregation level combination or the PDCCH candidate combination is determined according to the configuration of the aggregation level combination or the PDCCH candidate combination. Combination, the aggregation level or PDCCH candidate in the prior art is used as the "member aggregation level" or "member PDCCH candidate" in the aggregation level combination or PDCCH candidate combination, and blindly detects the aggregation level combination according to the configuration of the aggregation level combination or PDCCH candidate combination Or the PDCCH candidates corresponding to the PDCCH candidate combination, which improves the robustness of the PDCCH on the one hand, and at the same time does not appear that a PDCCH with a high aggregation level corresponds to too large continuous resources, which eliminates the improvement of the robustness and avoidance of the PDCCH. The conflict between the blocking of network allocation of PDCCH resources can well take into account the above two aspects.

Embodiment 2

As described below, an embodiment of the present invention provides an apparatus for detecting a physical downlink control channel.

Referring to the structural block diagram of the physical downlink control channel detection apparatus shown in FIG. 2 .

The detection device of the physical downlink control channel includes: a configuration unit 201, a combination unit 202 and a detection unit 203; the main functions of each unit are as follows:

a configuration unit 201, adapted to determine the configuration of aggregation level combinations or PDCCH candidate combinations;

The combining unit 202 is adapted to determine, according to the configuration of the aggregation level combination or the PDCCH candidate combination, the aggregation level combination or the PDCCH candidate combination, the aggregation level or the PDCCH candidate in the aggregation level combination or the PDCCH candidate combination as the member aggregation level or the member PDCCH candidate;

The detection unit 203 is adapted to blindly detect the PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination according to the configuration of the aggregation level combination or the PDCCH candidate combination.

It can be seen from the above description of the technical solutions: in this embodiment, the configuration of the aggregation level combination or the PDCCH candidate combination is determined according to the instruction of the base station, and the aggregation level combination or the PDCCH candidate combination is determined according to the configuration of the aggregation level combination or the PDCCH candidate combination. Combination, the aggregation level or PDCCH candidate in the prior art is used as the "member aggregation level" or "member PDCCH candidate" in the aggregation level combination or PDCCH candidate combination, and blindly detects the aggregation level combination according to the configuration of the aggregation level combination or PDCCH candidate combination Or the PDCCH candidates corresponding to the PDCCH candidate combination, which improves the robustness of the PDCCH on the one hand, and at the same time does not appear that a PDCCH with a high aggregation level corresponds to too large continuous resources, which eliminates the improvement of the robustness and avoidance of the PDCCH. The conflict between the blocking of network allocation of PDCCH resources can well take into account the above two aspects.

In a specific implementation, the aggregation level combination or the PDCCH candidate combination may be composed of 2-3 member aggregation levels or member PDCCH candidates.

In a specific implementation, the member aggregation level or the PDCCH candidates corresponding to the member PDCCH candidates are not independently detected in the blind detection process, or the member aggregation level or the member PDCCH candidates corresponding to the member PDCCH candidates are not independently detected in the blind detection process. the PDCCH candidates.

In a specific implementation, the aggregation level combination or PDCCH candidate combination may be composed of several member aggregation levels or member PDCCH candidates of the same size, or the aggregation level combination or PDCCH candidate combination may be composed of several member aggregation levels or member PDCCH candidates of different sizes Candidate composition.

It can be seen from the above description of the technical solutions that: in this embodiment, the aggregation level combination or PDCCH candidate combination may be composed of several member aggregation levels or member PDCCH candidates of the same or different sizes, which can be adjusted according to requirements in terms of system complexity and system complexity. A trade-off between flexibility.

In a specific implementation, the configuration of the aggregation level combination or the PDCCH candidate combination may be determined by the member aggregation level or the search space configuration corresponding to the member PDCCH candidates.

In a specific implementation, the search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination may have the same slot period and/or offset.

In a specific implementation, the search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination may have the same start symbol in the time slot.

In a specific implementation, the search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination may have different start positions, but the time interval of the start positions is less than X symbols.

In a specific implementation, the CCE index of the PDCCH candidate corresponding to the aggregation level combination or PDCCH candidate combination may be the CCEs of the PDCCH candidates corresponding to several member aggregation levels or member PDCCH candidates included in the aggregation level combination or PDCCH candidate combination Index OK.

It can be seen from the above description of the technical solutions: in this embodiment, the CCE index of the PDCCH candidate corresponding to the aggregation level combination or the PDCCH candidate combination is composed of several member aggregation levels or The CCE index of the PDCCH candidate corresponding to the member PDCCH candidate is determined. In this case, the resources of the PDCCH candidate corresponding to the aggregation level combination or PDCCH candidate combination actually reuse the members included in the aggregation level combination or PDCCH candidate combination. The aggregation level or the resources of the PDCCH candidates corresponding to the member PDCCH candidates are beneficial to simplify the complexity of the PDCCH resource allocation of the base station, and also simplify the blind detection complexity of the user equipment.

In a specific implementation, the PDCCH candidates corresponding to the aggregation level combination or PDCCH candidate combination are composed of several PDCCH candidates indicated by the network side corresponding to the member aggregation levels or member PDCCH candidates included in the aggregation level combination or PDCCH candidate combination , or the PDCCH candidates corresponding to the aggregation level combination or PDCCH candidate combination automatically correspond to the PDCCH candidates corresponding to any number of member aggregation levels or member PDCCH candidates included in the aggregation level combination or PDCCH candidate combination.

In a specific implementation, when there are any two member aggregation levels or the CCE indexes of the PDCCH candidates corresponding to the member PDCCH candidates overlap, the overlapping CCE index is only counted as one CCE index, or when any two member aggregation levels or When the CCE indices of the PDCCH candidates corresponding to the member PDCCH candidates overlap, the two member aggregation levels or the aggregation level combination to which the member PDCCH candidates belong, or the PDCCH candidates corresponding to the PDCCH candidate combination will not be regarded as one PDCCH candidate.

It can be seen from the above description of the technical solutions: in this embodiment, when any two member aggregation levels or CCE indexes of PDCCH candidates corresponding to member PDCCH candidates overlap, the overlapping CCE index is only counted as one CCE index, Or when any two member aggregation levels or the CCE indexes of the PDCCH candidates corresponding to the member PDCCH candidates overlap, the two member aggregation levels or member PDCCH candidates belong to the aggregation level combination or PDCCH candidate combination corresponding to the PDCCH candidate will not be. As a PDCCH candidate, this can simplify the scheduling of the base station.

In a specific implementation, the configuration of determining the aggregation level combination or the PDCCH candidate combination may be to determine the aggregation level combination or the PDCCH candidate combination according to the instruction of the base station.

In a specific implementation, the length of the mother code encoded by the Polar code of the PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination may be 512.

Embodiment 3

As described below, an embodiment of the present invention provides a user equipment.

The difference from the prior art is that the user equipment includes an apparatus for detecting a physical downlink control channel as provided in the embodiment of the present invention. Therefore, the user equipment can determine the configuration of the aggregation level combination or the PDCCH candidate combination according to the instruction of the base station, and determine the aggregation level combination or the PDCCH candidate combination according to the configuration of the aggregation level combination or the PDCCH candidate combination. The candidate is used as the "member aggregation level" or "member PDCCH candidate" in the aggregation level combination or PDCCH candidate combination. According to the configuration of the aggregation level combination or PDCCH candidate combination, the PDCCH candidates corresponding to the aggregation level combination or PDCCH candidate combination are blindly detected, so that On the one hand, the robustness of PDCCH is improved, and at the same time, PDCCH with a high aggregation level does not correspond to too large continuous resources, which eliminates the conflict between improving the robustness of PDCCH and avoiding the congestion of network allocation of PDCCH resources. It can well balance the above two aspects.

In a specific implementation, the user equipment may be a mobile phone user terminal.

Those of ordinary skill in the art can understand that, in the various methods of the above embodiments, all or part of the steps may be completed by program instructions related to hardware, and the program may be stored in a computer-readable storage medium, and the storage medium may include : ROM, RAM, disk or CD, etc.

Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be based on the scope defined by the claims.

Claims (26)

1. A method for detecting a physical downlink control channel, comprising: determine the configuration of aggregation level combinations or PDCCH candidate combinations; According to the configuration of the aggregation level combination or the PDCCH candidate combination, determine the aggregation level combination or the PDCCH candidate combination, and the aggregation level or PDCCH candidate in the aggregation level combination or the PDCCH candidate combination as the member aggregation level or the member PDCCH candidate; According to the configuration of the aggregation level combination or the PDCCH candidate combination, blindly detect the PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination; An aggregation level combination or PDCCH candidate combination consists of several member aggregation levels or member PDCCH candidates of the same size. 2 . The method for detecting a physical downlink control channel according to claim 1 , wherein the aggregation level combination or the PDCCH candidate combination consists of 2-3 member aggregation levels or member PDCCH candidates. 3 . 3. The method for detecting a physical downlink control channel according to claim 1, wherein in the blind detection process, the member aggregation level or the PDCCH candidate corresponding to the member PDCCH candidate, or the blind detection process cannot be independently detected. The detection process allows independent detection of the member aggregation level or the PDCCH candidates corresponding to the member PDCCH candidates. 4 . The method for detecting a physical downlink control channel according to claim 1 , wherein the configuration of the aggregation level combination or the PDCCH candidate combination is determined by the member aggregation level or the search space configuration corresponding to the member PDCCH candidates. 5 . 5. The method for detecting a physical downlink control channel according to claim 1, wherein the search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination have the same time slot period and/or offset. 6. The method for detecting a physical downlink control channel according to claim 1, wherein the search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination have the same time slot Inside start symbol. 7. The method for detecting a physical downlink control channel according to claim 1, wherein the search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination have different starting positions , but the time interval of the start position is less than X symbols, and X ≥ 1. 8 . The method for detecting a physical downlink control channel according to claim 1 , wherein the CCE index of the PDCCH candidate corresponding to the aggregation level combination or the PDCCH candidate combination is composed of several CCE indexes included in the aggregation level combination or the PDCCH candidate combination. The member aggregation level or the CCE index of the PDCCH candidate corresponding to the member PDCCH candidate is determined. 9 . The method for detecting a physical downlink control channel according to claim 8 , wherein the PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination are included in the aggregation level combination or the PDCCH candidate combination indicated by the network side. 10 . Several member aggregation levels or the PDCCH candidate composition corresponding to the member PDCCH candidate, or the PDCCH candidate corresponding to the aggregation level combination or PDCCH candidate combination automatically corresponds to any number of member aggregation levels included in the aggregation level combination or PDCCH candidate combination Or the index of the PDCCH candidate corresponding to the member PDCCH candidate. 10. The method for detecting a physical downlink control channel according to claim 8, wherein when there are any two member aggregation levels or the CCE indexes of the PDCCH candidates corresponding to the member PDCCH candidates overlap, the overlapping CCE indexes are only It is counted as one CCE index, or when the CCE indexes of any two member aggregation levels or PDCCH candidates corresponding to the member PDCCH candidates overlap, the aggregation level combination or PDCCH candidate combination to which the two member aggregation levels or member PDCCH candidates belong. The corresponding PDCCH candidate will not be regarded as a PDCCH candidate. 11 . The method for detecting a physical downlink control channel according to claim 1 , wherein the configuration of determining the aggregation level combination or the PDCCH candidate combination is to determine the aggregation level combination or the PDCCH candidate combination according to an instruction of the base station. 12 . 12 . The method for detecting a physical downlink control channel according to claim 1 , wherein the length of the mother code encoded by the Polar code of the PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination is 512. 13 . 13. An apparatus for detecting a physical downlink control channel, comprising: a configuration unit, a combining unit and a detecting unit; wherein: a configuration unit, adapted to determine the configuration of the aggregation level combination or the PDCCH candidate combination; a combining unit, adapted to determine an aggregation level combination or a PDCCH candidate combination according to the configuration of the aggregation level combination or the PDCCH candidate combination, and the aggregation level or PDCCH candidate in the aggregation level combination or the PDCCH candidate combination as a member aggregation level or a member PDCCH candidate; a detection unit, adapted to blindly detect the PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination according to the configuration of the aggregation level combination or the PDCCH candidate combination; An aggregation level combination or PDCCH candidate combination consists of several member aggregation levels or member PDCCH candidates of the same size. 14. The device for detecting a physical downlink control channel according to claim 13, wherein the aggregation level combination or the PDCCH candidate combination is composed of 2-3 member aggregation levels or member PDCCH candidates. 15. The device for detecting a physical downlink control channel according to claim 13, wherein in the blind detection process, the member aggregation level or the PDCCH candidate corresponding to the member PDCCH candidate, or the blind detection process will not be independently detected. The detection process allows independent detection of the member aggregation level or the PDCCH candidates corresponding to the member PDCCH candidates. 16. The device for detecting a physical downlink control channel according to claim 13, wherein the configuration of the aggregation level combination or the PDCCH candidate combination is determined by the member aggregation level or the search space configuration corresponding to the member PDCCH candidates. 17. The device for detecting a physical downlink control channel according to claim 13, wherein the search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination have the same time slot period and/or offset. 18. The device for detecting a physical downlink control channel according to claim 13, wherein the search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination have the same time slot Inside start symbol. 19. The device for detecting a physical downlink control channel according to claim 13, wherein the search spaces corresponding to several member aggregation levels or member PDCCH candidates in the same aggregation level combination or PDCCH candidate combination have different start positions , but the time interval of the start position is less than X symbols, and X ≥ 1. 20. The device for detecting a physical downlink control channel according to claim 13, wherein the CCE index of the PDCCH candidate corresponding to the aggregation level combination or the PDCCH candidate combination is a number of CCE indexes included in the aggregation level combination or the PDCCH candidate combination. The member aggregation level or the CCE index of the PDCCH candidate corresponding to the member PDCCH candidate is determined. 21. The device for detecting a physical downlink control channel according to claim 20, wherein the PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination are included in the aggregation level combination or the PDCCH candidate combination indicated by the network side Several member aggregation levels or the PDCCH candidate composition corresponding to the member PDCCH candidate, or the PDCCH candidate corresponding to the aggregation level combination or PDCCH candidate combination automatically corresponds to any number of member aggregation levels included in the aggregation level combination or PDCCH candidate combination Or the PDCCH candidate corresponding to the member PDCCH candidate. 22. The device for detecting a physical downlink control channel according to claim 20, wherein when there are any two member aggregation levels or CCE indexes of the PDCCH candidates corresponding to the member PDCCH candidates overlapping, the overlapping CCE indexes are only It is counted as one CCE index, or when the CCE indexes of any two member aggregation levels or PDCCH candidates corresponding to the member PDCCH candidates overlap, the aggregation level combination or PDCCH candidate combination to which the two member aggregation levels or member PDCCH candidates belong. The corresponding PDCCH candidate will not be regarded as a PDCCH candidate. 23 . The apparatus for detecting a physical downlink control channel according to claim 13 , wherein the configuration of determining the aggregation level combination or the PDCCH candidate combination is to determine the aggregation level combination or the PDCCH candidate combination according to an instruction of the base station. 24 . 24 . The device for detecting a physical downlink control channel according to claim 13 , wherein the length of the mother code encoded by the Polar code of the PDCCH candidates corresponding to the aggregation level combination or the PDCCH candidate combination is 512. 25 . 25. A user equipment, comprising the device for detecting a physical downlink control channel according to any one of claims 13 to 24. 26. The user equipment according to claim 25, wherein the user equipment is a mobile phone terminal.

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