CN109586860B

CN109586860B - Resource multiplexing method and device, storage medium, terminal and base station

Info

Publication number: CN109586860B
Application number: CN201710897686.2A
Authority: CN
Inventors: 塔帕尼·韦斯特曼; 卡尔·兰皮宁
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2017-09-28
Filing date: 2017-09-28
Publication date: 2020-05-26
Anticipated expiration: 2037-09-28
Also published as: CN109586860A

Abstract

A resource multiplexing method and device, storage medium, terminal and base station are provided, the method comprises: judging whether resource allocation overlapping exists in a time domain or not based on first DCI, wherein the first DCI is obtained from a control region of a downlink time slot; when the judgment result shows that resource allocation overlapping exists in the time domain, acquiring a multiplexing resource bitmap based on information configured in a non-control area of the downlink time slot; determining control resources multiplexed by the PDCCH channel to the PDSCH channel based on the first DCI and the multiplexing resource bitmap. The scheme provided by the invention can indicate the position of the multiplexing resource in a mode of less blind detection amount, less control delay and less energy consumption, so that the user equipment can efficiently multiplex the resource used by the control channel.

Description

Resource multiplexing method and device, storage medium, terminal and base station

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a resource multiplexing method and apparatus, a storage medium, a terminal, and a base station.

Background

In a 5G New Radio (NR) system, a Control Channel (Control Channel) is a Set of Control Resource sets (CORESET) located in first to third Orthogonal Frequency Division Multiplexing (OFDM) symbols in a transmission slot. Each Control resource set includes a group of Control Channel elements (CCEs, which may also be referred to as Control Channel elements), where the CCEs include Downlink Control Information (DCI) and uplink Control Information; one CCE is composed of one or more Resource Element Groups (REGs).

In practical applications, the configured control region may occupy only a portion of the overall system bandwidth. Therefore, in order to efficiently use resources, data may be mapped onto unused resources in OFDM symbols allocated to control channels. Further, the number of resources actually used for Physical Downlink Control Channel (PDCCH) transmission may be smaller than the total resources reserved for the Control resource set. Thus, data can be mapped onto unused resources of a set of control resources.

According to the latest protocol of the third Generation Partnership Project (3rd Generation Partnership Project, 3GPP), the NR must be able to support multiplexing of at least a part of the control resource set, at least in the frequency domain, such that it can be dynamically multiplexed to data of the same or different User Equipment (UE).

However, in order to ensure that the UE is able to utilize these unused control resources, the location of these unused resources on the frequency domain must be somehow informed to the UE. The prior art fails to provide a better solution to this problem.

Disclosure of Invention

The technical problem solved by the invention is how to indicate the position of multiplexing resources to the user equipment in a more optimized way, so that the user equipment can efficiently multiplex the resources of the control channel.

To solve the foregoing technical problem, an embodiment of the present invention provides a resource multiplexing method, including: judging whether resource allocation overlapping exists in a time domain or not based on first DCI, wherein the first DCI is obtained from a control region of a downlink time slot; when the judgment result shows that resource allocation overlapping exists in the time domain, acquiring a multiplexing resource bitmap based on information configured in a non-control area of the downlink time slot; determining control resources multiplexed by the PDCCH channel to the PDSCH channel based on the first DCI and the multiplexing resource bitmap.

Optionally, the obtaining the multiplexing resource bitmap based on the information configured in the non-control region of the downlink timeslot includes: acquiring second DCI, wherein the second DCI is configured in a non-control area at a preset position of the downlink time slot; decoding the second DCI to obtain the multiplexed resource bitmap.

Optionally, the preset position is obtained from a high-level signaling in advance; alternatively, it is pre-programmed by hard-coding.

Optionally, the preset position is obtained by calculation based on a characteristic parameter included in the first DCI.

Optionally, the characteristic parameter is selected from: frequency domain allocation of the PDSCH channel; a starting symbol of the PDSCH channel; and a control region size of the PDCCH channel.

Optionally, the determining whether there is resource allocation overlap in a time domain based on the first DCI includes: acquiring a starting symbol of the PDSCH channel based on the first DCI; and judging whether resource allocation overlapping exists on a time domain or not according to the starting symbol of the PDSCH channel and the position of a preset control channel.

Optionally, the preset control channel position is obtained from a high-level signaling in advance; alternatively, it is pre-programmed by hard-coding.

Optionally, before determining whether there is resource allocation overlap in the time domain based on the first DCI, the resource multiplexing method further includes: acquiring the downlink time slot; and configuring the downlink time slot for blind detection according to a preset control resource set so as to acquire the first DCI.

An embodiment of the present invention further provides a resource multiplexing apparatus, including: a judging module, configured to judge whether resource allocation overlap exists in a time domain based on a first DCI, where the first DCI is obtained from a control region of a downlink timeslot; a first obtaining module, configured to obtain a multiplexing resource bitmap based on information configured in a non-control region of the downlink timeslot when the determination result indicates that resource allocation overlap exists in the time domain; a determining module, configured to determine, based on the first DCI and the multiplexed resource bitmap, a control resource that is multiplexed by the PDCCH channel to the PDSCH channel.

Optionally, the first obtaining module includes: the first obtaining submodule is used for obtaining second DCI, wherein the second DCI is configured in a non-control area at a preset position of the downlink time slot; and the decoding submodule is used for decoding the second DCI to obtain the multiplexing resource bitmap.

Optionally, the determining module includes: a second obtaining submodule, configured to obtain a starting symbol of the PDSCH channel based on the first DCI; and the judging submodule is used for judging whether resource allocation overlapping exists in a time domain according to the starting symbol of the PDSCH channel and the position of a preset control channel.

Optionally, the resource multiplexing apparatus further includes: a second obtaining module, configured to obtain the downlink timeslot before determining whether resource allocation overlap exists in a time domain based on the first DCI; and the blind detection module is used for configuring the blind detection of the downlink time slot according to a preset control resource set so as to acquire the first DCI.

The embodiment of the invention also provides a resource multiplexing method, which comprises the following steps: configuring a first DCI in a control region of a downlink slot, the first DCI at least comprising an allocation of resources in a time domain; when the allocation of the resources on the time domain is overlapped, determining a multiplexing resource bitmap, wherein the multiplexing resource bitmap is used for indicating the control resources multiplexed by the PDCCH to the PDSCH; and configuring the multiplexing resource bitmap in a non-control area of the downlink time slot.

Optionally, the resource multiplexing method further includes: and sending the downlink time slot.

Optionally, the configuring the multiplexing resource bitmap in the non-control region of the downlink timeslot includes: and configuring second DCI in a non-control region at a preset position of the downlink time slot, so as to indicate the multiplexing resource bitmap through the second DCI.

Optionally, the preset position is indicated in advance through a high-layer signaling.

Optionally, the preset position is indicated by a characteristic parameter configured in the first DCI.

Optionally, the first DCI is at least used to indicate a starting symbol of the PDSCH channel.

An embodiment of the present invention further provides a resource multiplexing apparatus, including: a first configuration module, configured to configure a first DCI in a control region of a downlink timeslot, where the first DCI at least includes allocation of resources in a time domain; a determining module, configured to determine a multiplexing resource bitmap when there is an overlap in allocation of the resources in a time domain, where the multiplexing resource bitmap is used to indicate control resources multiplexed by a PDCCH channel to a PDSCH channel; a second configuration module, configured to configure the multiplex resource bitmap in a non-control region of the downlink timeslot.

Optionally, the resource multiplexing apparatus further includes: and the sending module is used for sending the downlink time slot.

Optionally, the second configuration module includes: and the configuration submodule is used for configuring second DCI in a non-control area at the preset position of the downlink time slot so as to indicate the multiplexing resource bitmap through the second DCI.

The embodiment of the invention also provides a storage medium, wherein computer instructions are stored on the storage medium, and the steps of the method are executed when the computer instructions are executed.

The embodiment of the present invention further provides a terminal, which includes a memory and a processor, where the memory stores computer instructions capable of running on the processor, and the processor executes the steps of the method when executing the computer instructions.

The embodiment of the present invention further provides a base station, which includes a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the steps of the method when executing the computer instructions.

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

on the user equipment side, the user equipment judges whether resource allocation overlapping exists in a time domain or not based on first DCI, wherein the first DCI is obtained from a control area of a downlink time slot; when the judgment result shows that resource allocation overlapping exists in the time domain, acquiring a multiplexing resource bitmap based on information configured in a non-control area of the downlink time slot; determining control resources multiplexed by the PDCCH channel to the PDSCH channel based on the first DCI and the multiplexing resource bitmap. Compared with the prior art that a multiplexing resource bitmap needs to be acquired from Downlink Control Information (DCI), when the technical solution of the embodiment of the present invention is implemented, because the first DCI and the multiplexing resource bitmap are respectively configured at different positions of the Downlink timeslot, the length of the first DCI does not change due to the change of the partition granularity of the multiplexing resource bitmap. Further, the first DCI can be kept relatively constant, so that the ue can obtain information included in the first DCI based on the same signal detection amount, and further obtain the multiplexing resource bitmap from a non-control region after it is determined that resource configuration overlap exists, so that the ue using the technical solution of the embodiment of the present invention can obtain multiplexing information of a control channel with a smaller signal detection amount, thereby reducing control delay, reducing energy consumption, and efficiently multiplexing resources of the control channel.

Further, the first DCI is obtained by blind-detecting the downlink timeslot according to a preset control resource set configuration; the multiplex resource bitmap is obtained by decoding a second DCI allocated to a non-control region at a predetermined position of a downlink timeslot. Those skilled in the art understand that, with the solution of the embodiment of the present invention, the length of the first DCI included in the downlink time slot received by the user equipment each time may be kept substantially unchanged, so that the user equipment can process the first DCI with the same length based on the same blind detection amount each time to acquire the resource allocation information. Further, after it is determined that resource diversity overlapping currently exists, since the second DCI configured with the multiplexing resource bitmap is configured at the preset position of the non-control region of the downlink timeslot, the user equipment can directly decode the second DCI at the preset position, thereby avoiding second blind detection, so as to better improve the processing efficiency of the user equipment, and ensure that the user equipment can multiplex resources of a control channel timely and efficiently.

Further, at the network side, the network configures a first DCI in a control region of a downlink timeslot, where the first DCI at least includes allocation of resources in a time domain; when the allocation of the resources on the time domain is overlapped, determining a multiplexing resource bitmap, wherein the multiplexing resource bitmap is used for indicating the control resources multiplexed by the PDCCH to the PDSCH; and configuring the multiplexing resource bitmap in a non-control area of the downlink time slot. Compared with the prior art that the multiplexing resource bitmap needs to be configured in the same DCI, the technical solution of the embodiment of the present invention configures a DCI (i.e., the first DCI) for indicating resource allocation information and the multiplexing resource bitmap respectively at different positions of the downlink time slot, so that the length of the first DCI does not change due to the change of the partition granularity of the multiplexing resource bitmap, and the configuration complexity of the first DCI is reduced, thereby effectively reducing control delay, reducing energy consumption when transmitting the downlink time slot, and more ensuring that the user equipment can efficiently multiplex resources of the control channel.

Drawings

Fig. 1 is a flowchart of a resource multiplexing method according to a first embodiment of the present invention;

FIG. 2 is a time-frequency diagram of a multiplexed resource bitmap employed in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a resource multiplexing apparatus according to a second embodiment of the present invention;

fig. 4 is a flowchart of a resource multiplexing method according to a third embodiment of the present invention;

fig. 5 is a schematic structural diagram of a resource multiplexing apparatus according to a fourth embodiment of the present invention;

fig. 6 is a signaling interaction diagram of an exemplary application scenario in which an embodiment of the present invention is employed.

Detailed Description

As will be appreciated by those skilled in the art, as background, in order to ensure that a User Equipment (UE) can multiplex available resources in a control channel in both time and frequency domains, the network needs to indicate to the UE a multiplexed resource bitmap identifying the locations of the multiplexed resources. The available resources in the Control CHannel may include available resources carried by a Physical Downlink Control CHannel (PDCCH for short), that is, resources reserved in the PDCCH CHannel but not used for Control (may also be referred to as unused resources); based on the specification of the latest protocol, resources are allowed to be shared between the PDCCH and the PDSCH, that is, the ue multiplexes the available resources on the PDCCH to a Physical Downlink Shared CHannel (PDSCH) for use, so as to utilize the system resources more efficiently.

However, if the multiplexing resource bitmap is sent based on the original Downlink Control Information (DCI), the length of the DCI changes with the change of the partition granularity of the multiplexing resource bitmap, so that the complexity and flexibility requirements for blind detection of the ue are increased, control delay is more likely to be caused, and the energy consumption of the ue is also increased.

In order to solve the technical problem, at a user equipment side, the user equipment judges whether resource allocation overlapping exists in a time domain based on first DCI, wherein the first DCI is acquired from a control region of a downlink time slot; when the judgment result shows that resource allocation overlapping exists in the time domain, acquiring a multiplexing resource bitmap based on information configured in a non-control area of the downlink time slot; determining control resources multiplexed by the PDCCH channel to the PDSCH channel based on the first DCI and the multiplexing resource bitmap.

Those skilled in the art understand that, when the user equipment implements the technical solution of the embodiment of the present invention, since the first DCI and the multiplexing resource bitmap are respectively configured at different positions of the downlink timeslot, the length of the first DCI is not changed due to a change in the partition granularity of the multiplexing resource bitmap. Further, since the length of the first DCI can be kept relatively constant, the ue can acquire information included in the first DCI based on the same signal detection amount, and further acquire the multiplexing resource bitmap from a non-control region after determining that there is resource configuration overlap, so that the ue using the technical solution of the embodiment of the present invention can acquire multiplexing information of a control channel with less signal detection amount, thereby reducing control delay, reducing energy consumption, and efficiently multiplexing resources of the control channel.

Further, at the network side, the network configures a first DCI in a control region of a downlink timeslot, where the first DCI at least includes allocation of resources in a time domain; when the allocation of the resources on the time domain is overlapped, determining a multiplexing resource bitmap, wherein the multiplexing resource bitmap is used for indicating the control resources multiplexed by the PDCCH to the PDSCH; and configuring the multiplexing resource bitmap in a non-control area of the downlink time slot.

Those skilled in the art understand that, in the technical solution of the embodiment of the present invention, DCI (i.e., the first DCI) for indicating resource allocation information and the multiplexing resource bitmap are respectively configured at different positions of the downlink time slot, so that the length of the first DCI is not changed due to a change in a partition granularity of the multiplexing resource bitmap, and the configuration complexity of the first DCI is reduced, thereby effectively reducing control delay, reducing energy consumption when transmitting the downlink time slot, and further ensuring that a user equipment can efficiently multiplex resources of a control channel.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Fig. 1 is a flowchart of a resource multiplexing method according to a first embodiment of the present invention, which can be applied to a user equipment side, for example, executed by the user equipment. Wherein the resources may include resources reserved in control region resources but not used for control or other purposes; the resource multiplexing may include multiplexing a control resource, which is not controlled to be used and is carried by the PDCCH, to a Physical Downlink shared CHannel (PDSCH, hereinafter referred to as PDSCH CHannel) for use.

Specifically, in this embodiment, the resource multiplexing method may include the following steps:

step S101, whether resource allocation overlapping exists in a time domain is judged based on a first DCI, wherein the first DCI is obtained from a control region of a downlink time slot.

And step S102, when the judgment result shows that the resource allocation overlap exists in the time domain, acquiring a multiplexing resource bitmap based on the information configured in the non-control area of the downlink time slot.

Step S103, determining the control resource of the PDSCH channel multiplexed by the PDCCH channel based on the first DCI and the multiplexing resource bitmap.

More specifically, before executing step S101, the method may further include: acquiring the downlink time slot; and configuring the downlink time slot for blind detection according to a preset control resource set so as to acquire the first DCI.

Further, the first DCI may be carried by the PDCCH channel. For example, a control region in which the first DCI is carried on the PDCCH channel may be included, where the control region may include an Orthogonal Frequency Division Multiplexing (OFDM) symbol; more specifically, the Control region may further include a Control Channel Element (CCE) located in the OFDM symbol; accordingly, the user equipment may acquire the first DCI based on the CCE.

Further, the preset control resource set configuration may be used to indicate a blind detection strategy for the PDCCH channel. Preferably, the preset control resource set configuration may be hard-coded on the user equipment side in advance; alternatively, it may be obtained in advance through higher layer signaling. The higher layer signaling may include configuration signaling acquired from a network side when the ue enters a connected state.

As a non-limiting embodiment, at the beginning of a slot (slot), the ue may receive the downlink slot, and read a control symbol of the downlink slot to a buffer, where the control symbol carrying a PDCCH channel may be a group of resource elements of an OFDM symbol. Further, the user equipment may blindly detect the control region to acquire the first DCI.

As a variation, if the first DCI cannot be acquired in the downlink time slot through blind detection, the process of this embodiment is directly ended, and the arrival of the next time slot is waited.

Further, the first DCI may be at least for indicating a starting symbol of the PDSCH channel to enable the user equipment to determine allocation information of the PDSCH channel in frequency and time domains.

As a non-limiting example, the step S101 may include: acquiring a starting symbol of the PDSCH channel based on the first DCI; and judging whether resource allocation overlapping exists on a time domain or not according to the starting symbol of the PDSCH channel and the position of a preset control channel. The preset control channel position may be used to indicate allocation information of the PDCCH channel in time and frequency domains.

Further, the preset control channel position may be obtained from a high layer signaling in advance; alternatively, the user equipment may be pre-programmed by hard-coding.

For example, referring to fig. 2, the PDCCH channel 1 (including three symbols at the beginning of the downlink slot) determined based on the preset control channel position and the PDSCH channel 2 determined based on the first DCI overlap in the time domain, that is, there is a resource allocation overlap in the time domain (see an overlap region 3 shown in fig. 2), and the determination result of step S101 is positive.

Further, when the determination result of the step S101 is affirmative, the step S102 may be proceeded to; otherwise, that is, no overlapping of resource allocation occurs in the time domain, the process of this embodiment is ended.

Further, the information in the non-control region of the downlink timeslot may be constrained to a preset position in resources carried by the PDSCH channel.

As a non-limiting example, the preset position may be calculated based on a characteristic parameter included in the first DCI. Wherein the characteristic parameter may be selected from: frequency domain allocation of the PDSCH channel; a starting symbol of the PDSCH channel; and a control region size of the PDCCH channel. Preferably, the logic for calculating the characteristic parameter may be pre-agreed with a network by the user equipment; alternatively, it may be indicated by the network in advance through higher layer signaling.

As a variant, the preset position may also be a fixed position. For example, the ue may obtain the preset location in advance through a high-level signaling; alternatively, the preset position is programmed and recorded in advance by hard coding.

Preferably, the preset position may be located at a next possible OFDM symbol after the PDCCH channel and avoid sharing a symbol with a Demodulation Reference Signal (DMRS).

Preferably, the preset position may be restricted within a frequency domain allocation range of the PDSCH channel.

Further, the frequency domain allocation of the PDSCH channel may include configuration information of the PDSCH channel on the frequency domain, for example, resource information occupied on the frequency domain.

Further, referring to fig. 2, the control region size may be measured based on the amount of resources included in the overlap region 3.

Further, the multiplexed resource bitmap may be used to indicate the locations of control resources that may be multiplexed for the PDSCH channel.

As a non-limiting example, for the control resources included in the overlapping region 3, the remaining unused resources except the control resources reserved for control may be used for the PDSCH channel multiplexing. The control resource reserved for control may include a control resource reserved for a user equipment receiving the downlink timeslot, and may also include a control resource reserved for other user equipments.

For example, referring to fig. 2, the PDCCH channel 1 (with time domain length T) may include M resources (the resources may be in units of control resource sets), wherein the PDSCH channel 2 is allocated to the user equipment, but in an overlapping region 3 where the PDSCH channel 2 overlaps with the PDCCH channel 1 of the time slot, the mth resource is allocated to other user equipments, and thus the user equipment needs to be indicated by the multiplexing resource bitmap, so that the user equipment can efficiently use other control resources except the mth resource in the overlapping region 3.

As a non-limiting example, the step S102 may include: acquiring second DCI, wherein the second DCI is configured in a non-control area at a preset position of the downlink time slot; decoding the second DCI to obtain the multiplexed resource bitmap.

As will be appreciated by those skilled in the art, since the preset location is predetermined, after it is determined that resource diversity overlapping exists, the ue can directly obtain the second DCI at the preset location, thereby avoiding a second blind detection, improving resource multiplexing efficiency of the ue, and reducing energy consumption.

Further, the better the division granularity of the multiplexing resource bitmap in the frequency domain is, the more signaling information is needed to indicate the multiplexing resource bitmap, and the longer the length of the corresponding second DCI is. Based on the scheme of this embodiment, since the second DCI is configured in a non-control region outside the control region of the downlink timeslot, it can be ensured that the length of the first DCI in the control region that needs to be blind detected remains constant, and the control delay and energy consumption added by the ue when performing the scheme of this embodiment are negligible.

Preferably, the division granularity of the multiplex Resource bitmap in the frequency domain may be in units of any one of a Resource Block Group (RBG), a Resource block, the Control Resource set, a Control Channel Element (CCE), a Resource Element Group (REG), and a Resource Element (RE).

Further, for the selected granularity unit of partition, in combination with the decoded multiplexed resource bitmap, the user equipment may utilize the available resources in the overlapping region 3. Wherein the granularity unit of division can be determined by a network.

Preferably, the multiplexed resource bitmap may be an existing bitmap for indicating resource allocation information of a PDCCH channel, or may be a bitmap dedicated for indicating resource allocation information of an overlapping region of the PDCCH channel and a PDSCH channel.

Thus, with the scheme of this embodiment, in addition to the original DCI (i.e., the first DCI), a new DCI (i.e., the second DCI) is provided, where the first DCI may be used to indicate a starting symbol of the PDSCH channel, so that the user equipment determines whether resource allocations of the PDSCH channel and the PDCCH channel overlap; the second DCI may be specifically configured to indicate the multiplexing resource bitmap, so that when resource allocation overlap occurs, the user equipment can determine, according to the first DCI and the multiplexing resource bitmap, a control resource multiplexed by the PDCCH channel to the PDSCH channel.

Further, since the first DCI does not include the multiplexing resource bitmap, the length of the first DCI may be relatively fixed, and the user equipment may not generate an additional blind detection amount when blind detecting the first DCI, so that the control delay and the energy consumption are also effectively controlled.

Further, the second DCI may be a non-control region located at the preset position of the downlink timeslot to avoid a second blind test, so as to better reduce a blind test amount of the user equipment, so that the user equipment can quickly acquire the multiplexed resource bitmap, thereby determining a control resource that can be multiplexed in the PDCCH channel to the PDSCH channel, and improving a utilization rate of an available resource.

Fig. 3 is a schematic structural diagram of a resource multiplexing apparatus according to a second embodiment of the present invention. Those skilled in the art understand that the resource multiplexing apparatus 2 in this embodiment is used to implement the technical solution of the method in the embodiment shown in fig. 1. Specifically, in this embodiment, the resource multiplexing apparatus 2 may include a determining module 23, configured to determine whether resource allocation overlap exists in a time domain based on a first DCI, where the first DCI is obtained from a control region of a downlink timeslot; a first obtaining module 24, configured to obtain a multiplexing resource bitmap based on information in a non-control region configured in the downlink timeslot when the determination result indicates that resource allocation overlap exists in the time domain; a determining module 25, configured to determine, based on the first DCI and the multiplexing resource bitmap, a control resource that is multiplexed by the PDCCH channel to the PDSCH channel.

Further, the first obtaining module 24 may include: the first obtaining submodule 241 is configured to obtain a second DCI, where the second DCI is configured in a non-control region at a preset position of the downlink timeslot; a decoding sub-module 242, configured to decode the second DCI to obtain the multiplexing resource bitmap.

Further, the preset location may be obtained from a high layer signaling in advance; alternatively, it may be pre-programmed by hard-coding.

Further, the preset position may be calculated based on a characteristic parameter included in the first DCI.

Preferably, the characteristic parameter may be selected from: frequency domain allocation of the PDSCH channel; a starting symbol of the PDSCH channel; and a control region size of the PDCCH channel.

Further, the determining module 23 may include: a second obtaining submodule 231 for obtaining a starting symbol of the PDSCH channel based on the first DCI; the determining submodule 232 is configured to determine whether resource allocation overlap exists in a time domain according to the starting symbol of the PDSCH channel and a preset control channel position.

Further, the preset control channel position may be obtained from a high layer signaling in advance; alternatively, it may be pre-programmed by hard-coding.

Further, the resource multiplexing apparatus 2 may further include: a second obtaining module 21, configured to obtain the downlink timeslot before determining whether resource allocation overlaps exist in a time domain based on the first DCI; a blind detection module 22, configured to blind detect the downlink timeslot according to a preset control resource set, so as to obtain the first DCI.

For more details of the operation principle and the operation mode of the resource multiplexing device 2, reference may be made to the related description in fig. 1, and details are not repeated here.

Fig. 4 is a flowchart of a resource multiplexing method according to a third embodiment of the present invention, which can be applied to a network side, for example, performed by a base station on the network side. The network can ensure that the system resources of the network are more efficiently used by indicating the control resources of the PDCCH which can be used for the PDSCH channel multiplexing to the user equipment.

step S201, configuring a first DCI in a control region of a downlink timeslot, where the first DCI at least includes allocation of resources in a time domain.

Step S202, when the allocation of the resources on the time domain has overlap, determining a multiplexing resource bitmap, wherein the multiplexing resource bitmap is used for indicating the control resources multiplexed by the PDCCH to the PDSCH channel.

Step S203, configuring the multiplex resource bitmap in the non-control area of the downlink timeslot.

Further, the resource may be a control resource carried by the PDCCH channel.

Preferably, the first DCI may be at least used to indicate a starting symbol of the PDSCH channel, so that the user equipment determines PDSCH channel allocation, and further determines whether resource allocation overlaps.

Further, the step S202 may include: when determining that there is an overlap between the resource allocation of the PDCCH channel and the resource allocation of the PDSCH channel, as shown in fig. 2, an overlap region 3 appears, and the network may determine the control resources reserved for control in the overlap region 3, and further acquire the multiplexed resource bitmap. Referring to fig. 2, the network may indicate in the multiplexing resource bitmap that the mth resource of the overlapping region 3 is reserved for the user equipment to transmit/receive control signaling, and then other control resources except the mth resource in the overlapping region 3 may be implicitly indicated to the user equipment to inform the user equipment that these unmarked resources may be multiplexed to the PDSCH channel.

As a non-limiting example, the multiplexed resource bitmap may be a resource partitioning grid over one OFDM symbol for PDCCH channel 1 and PDSCH channel 2 as shown in fig. 2. Alternatively, the multiplexed resource bitmap may be a resource partition grid for only the overlapping region 3 as shown in fig. 2.

Further, when determining the multiplexing resource bitmap, the network may determine a partition granularity of the multiplexing resource bitmap according to a required resource multiplexing efficiency, so as to allow more user equipments to use the unused resources of the control region as much as possible.

Further, the step S203 may include: and configuring second DCI in a non-control region at a preset position of the downlink time slot, so as to indicate the multiplexing resource bitmap through the second DCI.

Further, the preset position may be indicated in advance through higher layer signaling.

Further, the preset position may be indicated by a characteristic parameter configured in the first DCI. Wherein the characteristic parameter may be selected from: frequency domain allocation of the PDSCH channel; a starting symbol of the PDSCH channel; and a control region size of the PDCCH channel.

Further, after the step S203 is executed, the method may further include: and sending the downlink time slot.

More specifically, for the explanation of the terms in this embodiment, reference may be made to the related description in fig. 1, which is not repeated herein.

Fig. 5 is a schematic structural diagram of a resource multiplexing apparatus according to a fourth embodiment of the present invention. Those skilled in the art understand that the resource multiplexing apparatus 4 in this embodiment is used to implement the technical solution of the method in the embodiment shown in fig. 4. Specifically, in this embodiment, the resource multiplexing apparatus 4 may include: a first configuring module 41, configured to configure a first DCI in a control region of a downlink slot, where the first DCI includes at least an allocation of resources in a time domain; a determining module 42, configured to determine a multiplexing resource bitmap when there is an overlap in allocation of the resources in the time domain, where the multiplexing resource bitmap is used to indicate that a PDCCH channel is multiplexed to a control resource of a PDSCH channel; a second configuring module 43, configured to configure the multiplex resource bitmap in a non-control area of the downlink timeslot.

Further, the resource multiplexing apparatus 4 may further include: a sending module 44, configured to send the downlink timeslot.

Further, the second configuration module 43 may include: a configuring submodule 431, configured to configure a second DCI in a non-control region at the preset position of the downlink timeslot, so as to indicate the multiplex resource bitmap through the second DCI.

Further, the preset position may be indicated by a characteristic parameter configured in the first DCI.

Preferably, the first DCI may be at least for indicating a start symbol of the PDSCH channel.

For more details of the operation principle and the operation mode of the resource multiplexing device 4, reference may be made to the related description in fig. 4, which is not described herein again.

In a typical application scenario, referring to fig. 6, a signaling interaction between a user equipment and a network employing an embodiment of the present invention is further described.

Specifically, in this application scenario, the network 5 may perform operation s1 to configure the first DCI in the control region of the downlink time slot to be transmitted, so as to indicate to the user equipment 6 the allocation of the resources on the network side in the time domain and the starting symbol of the PDSCH channel allocated to the user equipment 6. Wherein, the allocation of the network-side resource in the time domain may include resource allocation of a PDCCH channel in the time domain.

Further, when there is an overlap in the time domain between the resources allocated to the PDCCH channel and the resources allocated to the PDSCH channel of the user equipment 6, the network 5 may perform operation s2 to determine a multiplexed resource bitmap to indicate to the user equipment 6 the control resources in the PDCCH channel that may be multiplexed to the PDSCH channel.

Further, in order to transmit the reuse resource bitmap to the user equipment 6 without increasing the blind detection complexity, the network 5 may further perform operation s3 to configure the reuse resource bitmap in the non-control region of the downlink timeslot to be transmitted. Wherein, the multiplex resource bitmap may be configured in a non-control area at a preset position in the downlink timeslot; the preset position may be dynamically determined by the network 5 according to the resource allocation of the PDCCH channel and the resource allocation of the PDSCH channel, or the preset position may be a fixed value that is predetermined by the network 5 and indicated to the user equipment 6 through a high-level signaling, or the preset position may be determined by negotiation in advance between the network 5 and the user equipment 6.

Further, after completing the configuration of the downlink timeslot, the network 5 may perform operation s4 to send the downlink timeslot to the user equipment 6. Wherein the downlink time slot may be transmitted based on a broadcast or unicast format.

Preferably, when the downlink time slot is sent in a broadcast manner, the downlink time slot may include PDSCH channel allocations of a plurality of user equipments and corresponding multiplexing resource bitmaps, and accordingly, after receiving the downlink time slot, each user equipment may obtain the first DCI and the second DCI associated with itself from blind detection and decoding, and use the control resource for PDSCH channel multiplexing in the PDCCH channel based on its own requirement. The multiplex resource bitmap can correspond to the user equipment one by one; alternatively, the multiplexed resource bitmap may correspond to a plurality of user equipments.

Further, after receiving the downlink timeslot, the ue 6 may execute operation s5, and perform blind detection on the downlink timeslot according to a preset control resource set configuration to obtain the first DCI.

Further, when it is determined that there is an overlap in resource allocation of the PDCCH channel and the PDSCH channel in the time domain based on the first DCI, the user equipment 6 may perform operation s6 to decode and acquire the second DCI from the preset position, so as to acquire the multiplexed resource bitmap from the second DCI.

Further, after acquiring the multiplexing resource bitmap, the user equipment 6 may further perform operation s7, so as to determine the control resource multiplexed by the PDCCH channel to the PDSCH channel based on the first DCI and the multiplexing resource bitmap, and further request the network 5 to use the control resource multiplexed by the PDCCH channel to the PDSCH channel when there is a data usage requirement.

For more contents of the working principle and the working mode of the user equipment 6 and the network 5 in the application scenario, reference may be made to the related descriptions in fig. 1 to fig. 5, which are not described again here.

Further, the embodiment of the present invention also discloses a storage medium, on which computer instructions are stored, and when the computer instructions are executed, the technical solutions of the methods described in the embodiments shown in fig. 1 and fig. 4 are executed. Preferably, the storage medium may include a computer-readable storage medium. The storage medium may include ROM, RAM, magnetic or optical disks, etc.

Further, an embodiment of the present invention further discloses a terminal, which includes a memory and a processor, where the memory stores a computer instruction capable of running on the processor, and the processor executes the technical solution of the method in the embodiment shown in fig. 1 when running the computer instruction. Preferably, the terminal may be the user equipment.

Further, the embodiment of the present invention also discloses a base station, which includes a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the technical solution of the method in the embodiment shown in fig. 4 when executing the computer instructions. Preferably, the base station may be in the network, the network interacts with the ue through the base station, and the ue may receive the downlink timeslot through the base station, and request the network to use reusable control resources through the base station after determining that the PDCCH is multiplexed to the control resources of the PDSCH.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A resource multiplexing method is characterized by comprising the following steps:

judging whether resource allocation overlapping exists in a time domain or not based on first DCI, wherein the first DCI is obtained from a control region of a downlink time slot;

when the judgment result shows that resource allocation overlapping exists in the time domain, acquiring a multiplexing resource bitmap based on information configured in a non-control area of the downlink time slot;

determining control resources multiplexed by the PDCCH channel to the PDSCH channel based on the first DCI and the multiplexing resource bitmap.

2. The method of claim 1, wherein the obtaining the multiplexed resource bitmap based on the information configured in the non-control region of the downlink timeslot comprises:

acquiring second DCI, wherein the second DCI is configured in a non-control area at a preset position of the downlink time slot;

decoding the second DCI to obtain the multiplexed resource bitmap.

3. The resource multiplexing method according to claim 2, wherein the preset position is obtained in advance from a higher layer signaling; alternatively, it is pre-programmed by hard-coding.

4. The resource multiplexing method according to claim 2, wherein the preset position is calculated based on a characteristic parameter included in the first DCI.

5. The resource multiplexing method according to claim 4, wherein the characteristic parameter is selected from the group consisting of:

frequency domain allocation of the PDSCH channel;

a starting symbol of the PDSCH channel; and

a control region size of the PDCCH channel.

6. The method of claim 1, wherein the determining whether there is a resource allocation overlap in a time domain based on the first DCI comprises:

acquiring a starting symbol of the PDSCH channel based on the first DCI;

and judging whether resource allocation overlapping exists on a time domain or not according to the starting symbol of the PDSCH channel and the position of a preset control channel.

7. The resource multiplexing method according to claim 6, wherein the predetermined control channel position is obtained in advance from a higher layer signaling; alternatively, it is pre-programmed by hard-coding.

8. The method of any of claims 1 to 7, further comprising, before determining whether there is a resource allocation overlap in the time domain based on the first DCI:

acquiring the downlink time slot;

and configuring the downlink time slot for blind detection according to a preset control resource set so as to acquire the first DCI.

9. A resource multiplexing apparatus, comprising:

a judging module, configured to judge whether resource allocation overlap exists in a time domain based on a first DCI, where the first DCI is obtained from a control region of a downlink timeslot;

a first obtaining module, configured to obtain a multiplexing resource bitmap based on information configured in a non-control region of the downlink timeslot when the determination result indicates that resource allocation overlap exists in the time domain;

a determining module, configured to determine, based on the first DCI and the multiplexed resource bitmap, a control resource that is multiplexed by the PDCCH channel to the PDSCH channel.

10. The resource multiplexing device of claim 9, wherein the first obtaining module comprises:

the first obtaining submodule is used for obtaining second DCI, wherein the second DCI is configured in a non-control area at a preset position of the downlink time slot;

and the decoding submodule is used for decoding the second DCI to obtain the multiplexing resource bitmap.

11. The apparatus according to claim 10, wherein the predetermined location is pre-obtained from higher layer signaling; alternatively, it is pre-programmed by hard-coding.

12. The resource multiplexing apparatus of claim 10, wherein the preset position is obtained by calculation based on a characteristic parameter included in the first DCI.

13. The resource multiplexing device of claim 12, wherein the characteristic parameter is selected from the group consisting of:

frequency domain allocation of the PDSCH channel;

a starting symbol of the PDSCH channel; and

a control region size of the PDCCH channel.

14. The resource multiplexing device according to claim 9, wherein the determining module comprises:

a second obtaining submodule, configured to obtain a starting symbol of the PDSCH channel based on the first DCI;

and the judging submodule is used for judging whether resource allocation overlapping exists in a time domain according to the starting symbol of the PDSCH channel and the position of a preset control channel.

15. The apparatus according to claim 14, wherein the predetermined control channel location is pre-obtained from higher layer signaling; alternatively, it is pre-programmed by hard-coding.

16. The resource multiplexing apparatus according to any one of claims 9 to 15, further comprising:

a second obtaining module, configured to obtain the downlink timeslot before determining whether resource allocation overlap exists in a time domain based on the first DCI;

and the blind detection module is used for configuring the blind detection of the downlink time slot according to a preset control resource set so as to acquire the first DCI.

17. A resource multiplexing method is characterized by comprising the following steps:

configuring a first DCI in a control region of a downlink slot, the first DCI at least comprising an allocation of resources in a time domain;

when the allocation of the resources on the time domain is overlapped, determining a multiplexing resource bitmap, wherein the multiplexing resource bitmap is used for indicating the control resources multiplexed by the PDCCH to the PDSCH;

and configuring the multiplexing resource bitmap in a non-control area of the downlink time slot.

18. The resource multiplexing method according to claim 17, further comprising: and sending the downlink time slot.

19. The method of claim 17, wherein the configuring the multiplexing resource bitmap in the non-control region of the downlink timeslot comprises:

and configuring second DCI in a non-control region at a preset position of the downlink time slot, so as to indicate the multiplexing resource bitmap through the second DCI.

20. The method of claim 19, wherein the predetermined position is indicated in advance by higher layer signaling.

21. The method of claim 19, wherein the predetermined position is indicated by a characteristic parameter configured in the first DCI.

22. The resource multiplexing method according to claim 21, wherein the characteristic parameter is selected from the group consisting of:

frequency domain allocation of the PDSCH channel;

a starting symbol of the PDSCH channel; and

a control region size of the PDCCH channel.

23. The resource multiplexing method of claim 17, wherein the first DCI is at least used to indicate a starting symbol of the PDSCH channel.

24. A resource multiplexing apparatus, comprising:

a first configuration module, configured to configure a first DCI in a control region of a downlink timeslot, where the first DCI at least includes allocation of resources in a time domain;

a determining module, configured to determine a multiplexing resource bitmap when there is an overlap in allocation of the resources in a time domain, where the multiplexing resource bitmap is used to indicate control resources multiplexed by a PDCCH channel to a PDSCH channel;

a second configuration module, configured to configure the multiplex resource bitmap in a non-control region of the downlink timeslot.

25. The resource multiplexing device of claim 24, further comprising: and the sending module is used for sending the downlink time slot.

26. The resource multiplexing apparatus of claim 24, wherein the second configuration module comprises:

and the configuration submodule is used for configuring second DCI in a non-control area at the preset position of the downlink time slot so as to indicate the multiplexing resource bitmap through the second DCI.

27. The apparatus of claim 26, wherein the predetermined location is indicated in advance by higher layer signaling.

28. The resource multiplexing device of claim 26, wherein the predetermined position is indicated by a characteristic parameter configured in the first DCI.

29. The resource multiplexing device of claim 28, wherein the characteristic parameter is selected from the group consisting of:

frequency domain allocation of the PDSCH channel;

a starting symbol of the PDSCH channel; and

a control region size of the PDCCH channel.

30. The resource multiplexing device of claim 24, wherein the first DCI is at least used to indicate a starting symbol of the PDSCH channel.

31. A storage medium having stored thereon computer instructions operable to perform the steps of the method of any one of claims 1 to 8 or 17 to 23.

32. A terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the method of any one of claims 1 to 8.

33. A base station comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor when executing the computer instructions performs the steps of the method of any one of claims 17 to 23.