CN108282872B

CN108282872B - Downlink control resource position indication method, determining method and related equipment

Info

Publication number: CN108282872B
Application number: CN201710010964.8A
Authority: CN
Inventors: 苟伟; 毕峰; 郝鹏
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-01-06
Filing date: 2017-01-06
Publication date: 2023-06-06
Anticipated expiration: 2037-01-06
Also published as: CN108282872A; WO2018127006A1

Abstract

The invention provides a downlink control resource position indication method, a determination method and related equipment, which are used for solving the problem that the complexity of the second-stage control of the blind detection of a terminal is higher due to the sending mode of downlink control information in the prior art, wherein the downlink control resource position indication method comprises the following steps: the sending end indicates and/or implies the resource position range of the second-stage control through signaling, the sending end indicates and/or implies the control group used by the receiving end, and the sending end combines the control group to indicate and/or implies the second-stage control resource of the receiving end, so that the complexity of blind detection of the second-stage downlink control of the receiving end is reduced.

Description

Downlink control resource position indication method, determining method and related equipment

Technical Field

The present invention relates to the field of communications, and in particular, to a method and apparatus for indicating a downlink control resource location, a transmitting end and a receiving end.

Background

The New generation of mobile communication system NR (New Radio) is being studied and standardized, which is one of the working points of the current 3GPP, and three typical service types exist in the future in the current determinable NR system. Common services include: eMBB (enhanced Mobile BroadBand ), URLLC (Ultra-Reliable and Low Latency Communications, ultra-reliable and low latency communication) and mctc (massive Machine Type Communications, large-scale machine type communication). These services have different requirements for latency, coverage, reliability, etc. For example, for emmbb, high peak transmission rates are mainly emphasized, low latency requirements (low latency is not a requirement), reliability, etc. For URLLC, low latency, high reliability transmissions are emphasized, for which the latency requirements are very demanding. For mctc, a large number of terminals are emphasized, the connection density is high and a larger transmission coverage is required, with little requirement for latency.

In the NR system, the length of a slot (slot) becomes shorter due to a scheduling unit, for example. Particularly in the high frequency band, a larger subcarrier spacing is used, for example, if a subcarrier spacing of up to 480Khz (LTE is 15 Khz) is used, the length of the corresponding slot is shortened by 32 times with respect to the subframe length of LTE. If the downlink control information is still sent along a mechanism similar to LTE, for example, once per scheduling unit, the receiving end needs to perform blind detection on the downlink control information at the beginning of each scheduling unit, which results in the complexity of blind detection of the receiving end being 32 times that of LTE, which is obviously a difficult to accept complexity.

Disclosure of Invention

The invention provides a downlink control resource position indication method, a determination method and related equipment, which are used for solving the problem that the complexity of the second-stage control of the blind detection of a terminal is higher due to the transmission mode of downlink control information in the prior art.

According to one aspect of the present invention, there is provided a method for indicating a downlink control resource location, including: the sending end indicates and/or implies the position range of the second-level control resource through signaling; the sending end indicates and/or implies the control group used by the receiving end, and the sending end combines the control group to indicate and/or implies the second-level control resource of the receiving end.

Optionally, the method further comprises: the transmitting end divides the time domain and/or frequency domain resources in the position range of the second-level control resources into one or more control units, and the one or more control units correspond to an index value.

Optionally, the method further comprises: the index value corresponding to the second-level control resource of the receiving end is indicated or implied through the first-level control or high-level signaling, or the initial index value corresponding to the second-level control resource of the receiving end, or the allowable initial index value corresponding to the second-level control resource of the receiving end.

Optionally, the method further comprises: and indicating or implying the number of the receiving end in the used control group, wherein the number is used for determining the second-level control resource of the receiving end in the resource range of the second-level control.

Optionally, the method further comprises: and establishing a corresponding relation between the numbers and the index values, implying the index values corresponding to the second-stage control resources of the receiving end through the numbers, implying the initial index values corresponding to the second-stage control resources of the receiving end through the numbers, implying the allowed start index values corresponding to the second-stage control resources of the receiving end through the numbers, or directly indicating the second-stage control resources of the receiving end by taking the numbers as the index values.

Optionally, the corresponding relation includes a one-to-one correspondence between the number and the index value, or a one-to-many correspondence between the number and the index value, or a correspondence between the number and the index value according to a specified offset.

Optionally, the sending end combines the control group indication and/or implies the second-level control resource of the receiving end, including: starting from the initial index value, according to the number of control units preset by the receiving end, the control units corresponding to one or more continuous index values are second-stage downlink control resources of the receiving end; or starting from the initial index value, according to the number of control units pre-agreed with the receiving end, taking the control units corresponding to one or more index values with discrete agreed patterns as second-level downlink control resources of the receiving end; or starting from the control unit corresponding to the initial index value, and according to the number of the control units pre-agreed with the receiving end, one or more continuous control units are second-stage downlink control resources of the receiving end; or starting from the control unit corresponding to the initial index value, and taking one or more control units scattered in the appointed pattern as the second-stage downlink control resource of the receiving end according to the number of the control units appointed with the receiving end in advance.

Optionally, the sending end combines the control group indication and/or implies the second-level control resource of the receiving end, including: starting from the initial index value, determining a second-stage control resource with a continuous control unit corresponding to one or more index values as a receiving end according to the number of control units corresponding to the transmission requirement of the second-stage control; or starting from the initial index value, according to the quantity of control units corresponding to the transmission requirement of a second-stage control, using one or more discrete control units corresponding to the index values according to the agreed pattern as second-stage control resources of the receiving end; or starting from a control unit corresponding to the initial index value, determining one or more control units with continuous quantity as second-stage downlink control resources of the receiving end according to the quantity of the control units corresponding to the transmission requirement of one second-stage control; or starting from the control unit corresponding to the initial index value, and taking one or more discrete control units according to the appointed pattern as the second-stage control resource of the receiving end according to the quantity of the control units corresponding to the transmission requirement of the second-stage control.

Optionally, the permission to start the index value refers to that the second-stage control resource of the receiving end is at a control unit corresponding to the index value that is permitted to start, or after the control unit corresponding to the index value that is permitted to start, or the permission to start the index value refers to that the second-stage control resource of the receiving end is not before the control unit corresponding to the index value that is permitted to start.

Optionally, the permission start index value refers to a position where the index value corresponding to the second-level control resource of the receiving end is the permission start index value, or after the permission start index value, or the permission start index value refers to a position where the index value corresponding to the second-level control resource of the receiving end is not before the permission start index value.

Optionally, the receiving end using the same control group has the same first-stage control information in the resource controlled by the first-stage, and/or uses the same radio network temporary identifier RNTI to scramble the first-stage control information;

the number of the receiving ends using the same control group is at least one, and the second level control of the receiving ends is in the position range of the same second level control resource.

Optionally, the method further comprises: indicating the minimum and/or maximum aggregation degree allowed to be used by the first-level control or the higher-level signaling or the second-level control of the receiving end in the control group or using the same control group; alternatively, the degree of aggregation used by the second level control within the control group or using the receiving end of the same control group is indicated through the first level control or the higher layer signaling.

Optionally, the method further comprises: the second level control of a receiving end is indicated to use the degree of aggregation through the first level control or the higher layer signaling.

Optionally, the method further comprises: dividing a system bandwidth into a plurality of sub-bands or a plurality of Physical Resource Block (PRB) sets; and transmitting the sub-band or the PRB set divided by the system bandwidth to a receiving end through the first-level control signaling or the higher-layer signaling, wherein the PRB in one PRB set is continuous or discrete.

Optionally, the method further comprises: and allocating the receiving end to a control group, and allocating the number in the control group used by the receiving end to the receiving end through a higher layer signaling or physical layer signaling instruction or through an implied deducing mode, wherein the implied deducing mode comprises that the receiving end judges the control group used by the receiving end according to the ID or the C-RNTI of the receiving end.

Optionally, the control unit includes: the control units are divided by the physical resource blocks PRB, REG, CCE or REs as basic units, and one or more control units carry one second level control.

Optionally, the sending end indicates and/or implies the location range of the second-level control resource through signaling, including: the transmitting end allocates a position range of a corresponding second-stage control resource for the control group through downlink control information DCI in the first-stage control; or when the position range of the second-level control resource is formed by PRBs, the transmitting end describes the PRBs corresponding to the position range of the second-level control resource through the resource allocation information in the DCI in the first-level control.

Optionally, the signaling indication includes: indicated by first level control or higher layer signaling.

Optionally, the location range of the second level control resource includes a location of a time domain resource and/or a frequency domain resource, where the location of the frequency domain resource is a location where one or more of a subband or a physical resource block PRB, a resource element group REG, a control channel element RE, or a resource element is located; the location of the time domain resource includes: the position of the time domain resource symbol and the number of symbols which are pre-agreed with the receiving end; or the number of the symbols is indicated to the receiving end through a high-layer signaling or a physical layer signaling, and the positions of the symbols are pre-agreed with the receiving end; or the position of the symbol is indicated to the receiving end through a high-layer signaling or a physical layer signaling, and the number of the symbol is pre-agreed with the receiving end; or the scheduling unit where the time domain resource is located is indicated by signaling or appointed in advance.

Optionally, the number of the pre-agreed time-frequency resource symbols is one or two, and the positions of the pre-agreed time-domain resource symbols are the previous symbol or the previous two symbols of the scheduling unit.

Optionally, the resources of the second level control include at least the second level control resources of the receiving end.

According to a second aspect of the present invention, there is provided a method for determining a position of a downlink control resource, including: the receiving end obtains the position range of the second-level control resource corresponding to the receiving end according to the received signaling and/or through preset convention; the receiving end acquires the control group used by the receiving end according to the received signaling and/or through preset convention, and the receiving end acquires the second-stage control resource of itself by combining the control group.

Optionally, the method further comprises: the receiving end knows that the time domain and/or frequency domain resources in the position range of the second-level control resources are divided into one or more control units according to the preset rule, and the one or more control units correspond to an index value.

Optionally, the method further comprises: and acquiring an index value corresponding to the second-level control resource of the receiving end indicated or implied by the first-level control or high-level signaling, or a starting index value corresponding to the second-level control resource of the receiving end, or an allowable starting index value corresponding to the second-level control resource of the receiving end.

Optionally, the method further comprises: and acquiring the number of the receiving end indicated or implied by the sending end in the used control group, wherein the number is used for determining second-level control resources of the receiving end in a second-level control resource range.

Optionally, the method further comprises: the receiving end calculates the second-stage control resource position or the initial position for starting searching of the receiving end in the resource range of the second-stage control according to the self identity ID or the C-RNTI.

Optionally, the number and the index value have a corresponding relationship, the number implies the index value and/or the initial index value corresponding to the second-stage control resource of the receiving end, and/or the initial index value is allowed, or the number is used as the index value to directly indicate the second-stage control resource of the receiving end.

Optionally, starting from the initial index value, according to the number of control units pre-agreed with the receiving end, the control units corresponding to one or more continuous index values are second-stage downlink control resources of the receiving end; or starting from the initial index value, according to the number of control units pre-agreed with the receiving end, taking the control units corresponding to one or more index values with discrete agreed patterns as second-level downlink control resources of the receiving end; or starting from the control unit corresponding to the initial index value, and according to the number of the control units pre-agreed with the receiving end, one or more continuous control units are second-stage downlink control resources of the receiving end; or starting from the control unit corresponding to the initial index value, and taking one or more control units scattered in the appointed pattern as the second-stage downlink control resource of the receiving end according to the number of the control units appointed with the receiving end in advance.

Optionally, starting from the initial index value, determining a second-stage control resource with a continuous one or more control units corresponding to the index values as a receiving end according to the number of control units corresponding to the transmission requirement of a second-stage control; or starting from the initial index value, according to the quantity of control units corresponding to the transmission requirement of a second-stage control, using one or more discrete control units corresponding to the index values according to the agreed pattern as second-stage control resources of the receiving end; or starting from a control unit corresponding to the initial index value, determining one or more control units with continuous quantity as second-stage downlink control resources of the receiving end according to the quantity of the control units corresponding to the transmission requirement of one second-stage control; or starting from the control unit corresponding to the initial index value, and taking one or more discrete control units according to the appointed pattern as the second-stage control resource of the receiving end according to the quantity of the control units corresponding to the transmission requirement of the second-stage control.

Optionally, the receiving end using the same control group has the same first-stage control information in the resource controlled by the first-stage, and/or uses the same radio network temporary identifier RNTI to scramble the first-stage control information; at least one receiving end uses the same control group, and the second level control of the receiving end is in the position range of the same second level control resource.

Optionally, the receiving end using the same control group has the same first-stage control information in the resource controlled by the first-stage, and/or uses the same radio network temporary identifier RNTI to scramble the first-stage control information; the number of the receiving ends using the same control group is at least one, and the second level control of the receiving ends is in the position range of the same second level control resource.

Optionally, the minimum and/or maximum aggregation degree allowed to be used is known through the first-level control or the higher-level signaling, or the second-level control of the receiving end using the same control group; or, the degree of aggregation used by the second-level control in the control group or the receiving end using the same control group is known through the first-level control or the high-level signaling.

Optionally, the method further comprises: the polymerization degree used by the second-level control of one receiving end is known through the first-level control or the high-level signaling.

Optionally, the method further comprises: the sub-band or PRB set of the system bandwidth division is known through the first-level control signaling or the higher-level signaling, wherein the PRBs in one PRB set are continuous or discrete.

Optionally, the method further comprises: the number in the control group used by the receiving end is obtained through the high-layer signaling or the physical layer signaling, or the receiving end judges the control group used by the receiving end according to the ID or the C-RNTI of the receiving end.

Optionally, the control unit includes: the control units are divided by physical resource blocks PRB, REG, CCE or REs as basic units, wherein one or more control units carry one second level control.

Optionally, the receiving end obtains the location range of the second-level control resource corresponding to the receiving end according to the received signaling and/or through preset convention, including: acquiring the position range of a second-stage control resource allocated for the control group through downlink control information DCI in the first-stage control; or when the resource range of the second-level control is formed by PRBs, the PRBs corresponding to the position range of the second-level control resource are known through the resource allocation information in the DCI in the first-level control.

Optionally, the signaling includes: first level control, physical layer or higher layer signaling.

Optionally, the location range of the second level control resource includes a location of a time domain resource and/or a frequency domain resource, where the location of the frequency domain resource is a location where one or more of a subband or a physical resource block PRB, a resource element group REG, a control channel element RE, or a resource element is located; the location of the time domain resource includes: the position of the time domain resource symbol and the number of symbols which are pre-agreed with the receiving end; or the number of the symbols is indicated to the receiving end through a high-layer signaling or a physical layer signaling, and the positions of the symbols are pre-agreed with the receiving end; or the positions of the symbols are indicated to the receiving end through the higher layer signaling or the physical layer signaling, and the number of the symbols is pre-agreed with the receiving end.

Optionally, the number of the pre-agreed time-frequency resource symbols is one or two, and the pre-agreed position is the previous symbol or the previous two symbols of the scheduling unit.

Optionally, the resource range of the second level control includes at least the resource of the second level control of the receiving end.

According to still another aspect of the present invention, there is provided an apparatus for indicating a position of a downlink control resource, which is applied to a transmitting end, including: the first indication module is used for indicating and/or implying the position range of the second-level control resource through signaling; the sending end indicates and/or implies the control group used by the receiving end, and the sending end combines the control group to indicate and/or implies the second-level control resource of the receiving end.

Optionally, the apparatus further includes: and the second indication module is used for dividing the time domain and/or frequency domain resources in the position range of the second-stage control resources into one or more control units, and corresponding one or more control units to one index value.

According to still another aspect of the present invention, there is provided a downlink control resource location determining apparatus, which is applied to a receiving end, including: the acquisition module is used for acquiring the position range of the second-stage control resource corresponding to the receiving end according to the received signaling and/or through preset convention; and acquiring a control group used by the receiving end according to the received signaling and/or through preset convention, and acquiring the second-stage control resource of the receiving end by combining the control group.

Optionally, the learning module is further configured to: the receiving end knows that the time domain and/or frequency domain resources in the position range of the second-level control resources are divided into one or more control units according to the preset rule, and the one or more control units correspond to an index value.

According to yet another aspect of the present invention, there is provided a transmitting end including a processor and a memory storing processor-executable instructions, and a data transceiver for data transmission and/or reception, which when executed by the processor, performs the operations of: indicating and/or implying a location range of the second level control resource by signaling; and indicating and/or implying the control group used by the receiving end, wherein the transmitting end combines the control group to indicate and/or implying the second-stage control resource of the receiving end.

According to still another aspect of the present invention, there is provided a receiving end characterized by comprising a processor and a memory storing processor-executable instructions, and a data transceiver for data transmission and/or reception, which when executed by the processor, performs the operations of: acquiring the position range of the second-stage control resource corresponding to the receiving end according to the received signaling and/or through preset convention; and acquiring a control group used by the receiving end according to the received signaling and/or through preset convention, and acquiring the second-stage control resource of the receiving end by combining the control group. The invention has the following beneficial effects:

in the scheme provided by the embodiment, the sending end indicates and/or implies the resource position range of the second-stage control and the dividing condition of the range, and meanwhile, the sending end indicates and/or implies the control group used by the receiving end, so that the complexity of blind detection of the second-stage downlink control of the receiving end is reduced.

Drawings

Fig. 1 is a flowchart of a method for indicating a downlink control resource location in a first embodiment of the present invention;

fig. 2 is a flowchart of a method for determining a position of a downlink control resource in a second embodiment of the present invention;

fig. 3 is a block diagram of a downlink control resource position indicating device according to a ninth embodiment of the present invention;

Fig. 4 is a block diagram of a downlink control resource location determining apparatus in a tenth embodiment of the present invention;

fig. 5 is a schematic structural diagram of a transmitting-end apparatus in an eleventh embodiment of the present invention;

fig. 6 is a schematic structural diagram of a receiving-end apparatus in a twelfth embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

First embodiment

The present embodiment provides a method for indicating a downlink control resource location, where the method is performed by a transmitting end, for example, by a base station, and the method specifically may include the following processing:

step 101: the sending end indicates and/or implies the position range of the second-level control resource through signaling;

the signaling involved in this step 101 may specifically be first level control or higher layer control signaling.

The Resource range of the second-level control at least comprises a second-level control Resource of a receiving end, and the position range of the second-level control Resource comprises the position of time domain resources and/or frequency domain resources, wherein the position of the frequency domain resources is one or more of sub-bands or PRBs (physical Resource elements), REGs (Resource Element Group, REG Resource Element groups), CCEs (Control Channel Element, control channel elements) or REs (Resource elements); the location of the time domain resource may specifically include the following three cases: the position of the time domain resource symbol and the number of symbols which are pre-agreed with the receiving end; indicating the number of symbols to a receiving end through a high-layer signaling or a physical layer signaling, wherein the positions of the symbols are pre-agreed with the receiving end; the positions of the symbols are indicated to the receiving end through the high-layer signaling or the physical layer signaling, the number of the symbols is pre-agreed with the receiving end, the number of pre-agreed time-frequency resource symbols is one or two, and the pre-agreed positions are the former symbol or the former two symbols of a scheduling unit (time slot or subframe).

Step 102: the sending end indicates and/or implies the control group used by the receiving end, and the sending end combines the control group to indicate and/or implies the second-level control resource of the receiving end.

In this embodiment, the receiving end using the same control group has the same first-stage control information in the resource controlled by the first stage, and/or scrambles the first-stage control information using the same RNTI (radio network temporary identifier, network Tempory Identity); the number of the receiving ends using the same control group is at least one, and the second level control of the receiving ends is in the position range of the same second level control resource.

The method provided by the embodiment can further comprise the following steps: the index value corresponding to the second-level control resource of the receiving end is indicated or implied through the first-level control or high-level signaling, or the initial index value corresponding to the second-level control resource of the receiving end, or the allowable initial index value corresponding to the second-level control resource of the receiving end.

In order to facilitate the receiving end to acquire the allocated second-stage control resource, an identifier of a number is introduced on the basis of an index value, specifically, the sending end indicates or implies a number of the receiving end in a control group used by the receiving end, the number is used for determining the second-stage control resource of the receiving end in a resource range of the second-stage control, on the basis, a corresponding relation is established between the number and the index value, the index value corresponding to the second-stage control resource of the receiving end is implied by the number, the starting index value corresponding to the second-stage control resource of the receiving end is implied by the number, or the second-stage control resource of the receiving end is directly indicated by taking the number as the index value, wherein the corresponding relation comprises a one-to-one relation between the number and the index value, or a one-to-many relation between the number and the index value, or the number and the index value are in a multi-to-one relation, or the number and the index value are in accordance with a specified offset.

The sending end implies that the resource position controlled by the second level can be performed in the following ways:

starting from the initial index value, according to the number of control units preset by the receiving end, the control units corresponding to one or more continuous index values are second-stage downlink control resources of the receiving end;

or starting from the initial index value, according to the number of control units pre-agreed with the receiving end, taking the control units corresponding to one or more index values with discrete agreed patterns as second-level downlink control resources of the receiving end;

or starting from the control unit corresponding to the initial index value, and according to the number of the control units pre-agreed with the receiving end, one or more continuous control units are second-stage downlink control resources of the receiving end;

or starting from the control unit corresponding to the initial index value, and taking one or more control units scattered in the appointed pattern as the second-stage downlink control resource of the receiving end according to the number of the control units appointed with the receiving end in advance.

Starting from the initial index value, determining a second-stage control resource with a continuous control unit corresponding to one or more index values as a receiving end according to the number of control units corresponding to the transmission requirement of the second-stage control;

Or starting from the initial index value, according to the quantity of control units corresponding to the transmission requirement of a second-stage control, using one or more discrete control units corresponding to the index values according to the agreed pattern as second-stage control resources of the receiving end;

or starting from a control unit corresponding to the initial index value, determining one or more control units with continuous quantity as second-stage downlink control resources of the receiving end according to the quantity of the control units corresponding to the transmission requirement of one second-stage control;

or starting from the control unit corresponding to the initial index value, and taking one or more discrete control units according to the appointed pattern as the second-stage control resource of the receiving end according to the quantity of the control units corresponding to the transmission requirement of the second-stage control.

The permission to start the index value refers to that the second-stage control resource of the receiving end is at the control unit corresponding to the index value permitted to start, or after the control unit corresponding to the index value permitted to start, or the permission to start the index value refers to that the second-stage control resource of the receiving end is not before the control unit corresponding to the index value permitted to start, or the permission to start the index value refers to that the index value corresponding to the second-stage control resource of the receiving end is at the index value permitted to start, or after the index value permitted to start, or the permission to start the index value refers to that the index value corresponding to the second-stage control resource of the receiving end is not before the index value permitted to start.

Optionally, the method provided in this embodiment may further include: indicating the minimum and/or maximum aggregation degree allowed to be used by the first-level control or the higher-level signaling or the second-level control of the receiving end in the control group or using the same control group; or, through the first-level control or the higher-layer signaling, indicating the polymerization degree used by the second-level control in the control group or using the receiving end of the same control group; alternatively, the degree of aggregation used by the second level control of one receiving end is indicated through the first level control or higher layer signaling.

The sending end indicates the position range of the second-level control resource through signaling specifically may include: the method comprises the steps of dividing the system bandwidth into a plurality of sub-bands or a plurality of physical resource block PRB sets, and transmitting the sub-bands or the PRB sets of the system bandwidth division to a receiving end through first-level control signaling or high-level signaling, wherein PRBs in one PRB set are continuous or discrete.

The sending end indicates the position range of the second-level control resource through signaling, or the sending end implies that the position of the second-level control resource specifically may include: and allocating the receiving end to a control group, and allocating the number in the control group used by the receiving end to the receiving end through a higher layer signaling or physical layer signaling instruction or through an implied deducing mode, wherein the implied deducing mode comprises that the receiving end judges the control group used by the receiving end according to the ID or the C-RNTI of the receiving end.

The dividing the location range of the second-level control resource into one or more control units may specifically include:

the control units are divided according to the physical resource blocks PRB, REG, CCE or REs as basic units, and one or more divided control units carry a second-level control.

The sending end indicates the position range of the second-level control resource through signaling specifically may include: the transmitting end allocates a position range of a corresponding second-stage control resource for the control group through downlink control information DCI in the first-stage control; or when the resource range of the second-level control is formed by PRBs, the transmitting end describes the PRBs corresponding to the resource range of the second-level control through the resource allocation information in the DCI in the first-level control.

Second embodiment

The present embodiment provides a method for determining a downlink control resource location, which may be executed by a terminal, and fig. 2 is a flowchart of the method, as shown in fig. 2, where the method specifically includes the following processing:

step 201: the receiving end obtains the position range of the second-level control resource corresponding to the receiving end according to the received signaling and/or through preset convention;

the resource range of the second-level control at least comprises the resource of the second-level control of the receiving end.

The receiving end obtains the position range of the second-stage control resource corresponding to the receiving end according to the received signaling, and the method specifically comprises the following steps: acquiring the position range of a second-stage control resource allocated for the control group through downlink control information DCI in the first-stage control; or when the resource range of the second-level control is formed by PRBs, the PRBs corresponding to the resource range of the second-level control are known through the resource allocation information in the DCI in the first-level control.

In addition, the receiving end can also know that the time domain and/or frequency domain resources in the position range of the second-stage control resources are divided into one or more control units according to the preset convention, and one or more control units correspond to one index value;

in this embodiment, the location range of the second-level control resource may be divided into control units by the transmitting end according to the physical resource block PRB, REG, CCE or RE as a basic unit, where one or more control units carry one second-level control.

Step 202: the receiving end obtains the control group used by the receiving end through the preset convention according to the received signaling and/or the receiving end, and the receiving end combines the control group to indicate and/or implicate the second-stage control resource of the receiving end.

Wherein the signaling includes: first level control, higher layer signaling, or physical layer signaling.

The location range of the second level control resource related in this embodiment includes the location of the time domain resource and/or the frequency domain resource, where the location of the frequency domain resource is the location of one or more of the sub-band or the physical resource block PRB, the resource element group REG, the control channel element RE, or the resource element; the location of the time domain resource can be specifically divided into the following three cases: the position of the time domain resource symbol and the number of symbols which are pre-agreed with the receiving end; or the number of the symbols is indicated to the receiving end through a high-layer signaling or a physical layer signaling, and the positions of the symbols are pre-agreed with the receiving end; or indicating the positions of the symbols to the receiving end through a high-layer signaling or a physical layer signaling, wherein the number of the symbols is pre-agreed with the receiving end, the number of the pre-agreed time-frequency resource symbols is one or two, and the pre-agreed positions are the former symbol or the former two symbols of the scheduling unit.

The receiving end obtains the position range of the second-level control resource corresponding to the receiving end according to the received signaling, or the receiving end obtains the position range of the second-level control resource corresponding to the receiving end through preset convention, which specifically includes:

obtaining an index value corresponding to a second-level control resource of a receiving end indicated or implied by the first-level control or high-level signaling, or a starting index value corresponding to the second-level control resource of the receiving end, or an allowable starting index value corresponding to the second-level control resource of the receiving end, and/or obtaining a number of the receiving end indicated or implied by the sending end in a control group used by the receiving end, wherein the number is used for determining the second-level control resource of the receiving end in a resource range of the second-level control. The corresponding relation exists between the number and the index value, the number implies the index value and/or the initial index value corresponding to the second-level control resource of the receiving end, and/or the starting index value is allowed, or the number is used as the index value to directly indicate the second-level control resource of the receiving end, wherein the corresponding relation comprises a one-to-one corresponding relation between the number and the index value, a one-to-many relation between the number and the index value, or the number and the index value are corresponding according to the specified offset.

In this embodiment, the second-stage downlink control resource may be specifically defined in the following several ways:

The receiving end obtains the position range of the second-stage control resource corresponding to the receiving end through pre-engagement, which specifically includes:

the receiving end calculates the second-stage control resource position or the initial position for starting searching of the receiving end in the resource range of the second-stage control according to the self identity ID or the C-RNTI.

In this embodiment, the receiving end using the same control group has the same first-stage control information in the resource controlled by the first stage, and/or uses the same radio network temporary identifier RNTI to scramble the first-stage control information; at least one receiving end uses the same control group, and the second level control of the receiving end is in the position range of the same second level control resource.

The receiving end using the same control group has the same first-stage control information in the resource controlled by the first stage, and/or uses the same radio network temporary identifier RNTI to scramble the first-stage control information; the number of the receiving ends using the same control group is at least one, and the second level control of the receiving ends is in the position range of the same second level control resource.

In this embodiment, the receiving end may learn, according to the received signaling, the location range of the second-level control resource corresponding to the receiving end, where the location range specifically includes: acquiring the minimum and/or maximum aggregation degree allowed to be used by the second-level control of the receiving end in the control group or using the same control group through the first-level control or high-level signaling; or, the degree of aggregation used by the second-level control in the control group or the receiving end using the same control group is known through the first-level control or the high-level signaling.

The receiving end obtains the position range of the second-stage control resource corresponding to the receiving end according to the received signaling, and the method further comprises the following steps: the polymerization degree used by the second-level control of one receiving end is known through the first-level control or the high-level signaling.

The receiving end knows that the time domain and/or frequency domain resources in the position range of the second-level control resources are divided into one or more control units according to the preset convention, and specifically the method can include: the sub-band or PRB set of the system bandwidth division is known through the first-level control signaling or the higher-level signaling, wherein the PRBs in one PRB set are continuous or discrete.

The receiving end obtains a control group used by the receiving end through preset agreement according to the received signaling and/or the receiving end, and the control group specifically comprises: the number in the control group used by the receiving end is obtained through the high-layer signaling or the physical layer signaling, or the receiving end judges the control group used by the receiving end according to the ID or the C-RNTI of the receiving end.

The indication method and the determination method for the downlink control resource position provided by the invention are respectively described above with the two ends of the sending end and the receiving end, and the first embodiment and the second embodiment both comprise a plurality of optional embodiment modes, and various interactions between the sending end and the receiving end are described below through different embodiments.

Third embodiment

The transmitting end (e.g., base station, hereinafter the same) configures control group information for the UE through higher layer signaling, e.g., using UE-specific RRC messages. For example, UE0, UE1, and UE2 are configured within the same control group. The transmitting end carries the number of each UE in the control group in the higher layer signaling at the same time, for example, UE0 number is 0, UE1 number is 1, and UE2 number is 2.

The transmitting end sends signaling instructions (which may be the same signaling) to UE0, UE1 and UE2 through the first level control, and the second level of these UEs controls the location range of the resources. For example, the second level control resource location range is indicated to be within PRBs numbered 10-21 (here, the logical number of PRBs may be used, and the actual physical resource may not necessarily be continuous, but may be the actual physical resource number). That is, UE0, UE1 and UE2 are used as a control group, and the resource locations of the second level control are only in 12 PRBs within the above range, so that the search range of the UE for receiving the second level control is greatly reduced.

It is assumed that the frequency domain of the downlink control is mapped according to the PRB allocation, for example, the downlink control of one UE is mapped within 4 PRBs. The time domain of the downlink control is according to OFDM symbols, e.g. one downlink control occupies the first 1 or the first 2 symbols of the slot. When the UE knows the PRB where its own downlink control is located, the UE may learn a specific downlink control mapping.

The transmitting end and the receiving end agree that the 12 PRBs are divided into 12 control units (the control units are sequentially recorded as 0-11 according to the PRB labels), each control unit corresponds to one PRB in the frequency domain, and 2 symbols are corresponding to the time domain (2 symbols are assumed here). The transmitting end and the receiving end agree that every 4 control units correspond to one index value. For example, the control units 0 to 3 configure the index value 0, the control units 4 to 7 configure the index value 1, and the control units 8 to 11 configure the index value 2.

The transmitting end and the receiving end agree that the number of the UE in the control group is used as an index value, and a control unit corresponding to the index value is the resource position of the second-stage control of the UE. In this way, UE0, UE1 and UE2 can uniquely determine their own resource location of the second level control according to the numbers in the control group.

Fourth embodiment

The transmitting end configures the information of the control group for the UE through higher layer signaling, for example, using UE-specific RRC messages. For example, UE0, UE1 and UE2 are configured in the same control group. The transmitting end carries the number of each UE in the control group in the high-layer signaling at the same time. For example, UE0 is numbered 0, UE1 is numbered 1, and UE2 is numbered 2.

The transmitting end sends signaling indication (which may be the same signaling) to the UE0, UE1 and UE2 through the first level control, and the location range of their second level control resources. For example, the second level control resource location range is indicated to be within PRBs numbered 10-21 (here, PRB logical numbers may be used, and actual physical resources may not necessarily be contiguous or may be actual physical resource numbers). That is, UE0, UE1 and UE2 are used as a control group, and the resource locations of the second level control are only in 12 PRBs within the location range of the second level control resource, so that the search range of the UE for receiving the second level control is greatly reduced.

The transmitting end and the receiving end agree that the 12 PRBs are divided into 12 control units (the control units are sequentially recorded as 0-11 according to the PRB labels), each control unit corresponds to one PRB in the frequency domain, and 2 symbols are corresponding to the time domain (2 symbols are assumed here). The transmitting end and the receiving end agree that every 4 control units correspond to one index value. For example, the control units 0,3,6,9 configure index value 0, the control units 1,4,7, 10 configure index value 1, and the control units 2,5,8, 11 configure index value 2.

The transmitting end and the receiving end agree that the number of the UE in the control group is used as an index value, and a control unit corresponding to the index value is the resource position of the second-stage control of the UE. Thus, UE0, UE1, UE2 can uniquely determine their own resource location of the second level control according to the numbers in the control group.

Fifth embodiment

The transmitting end sends signaling indication (which may be the same signaling) to the UE0, UE1 and UE2 through the first level control, and the location range of their second level control resources. For example, the second level control resource location range is indicated to be within PRBs numbered 10-21 (PRB logical numbers may be used here, and actual physical resources may not necessarily be contiguous or may be actual physical resource numbers). That is, UE0, UE1, UE2 are used as a control group, and the resource locations of their secondary controls are only in 12 PRBs within the above range, so that the search range of receiving the secondary controls is greatly reduced.

It is assumed that the frequency domain of the downlink control is mapped according to the PRB allocation, and for example, the downlink control of one UE is mapped within 2, 4, or 8 PRBs (aggregation degree corresponding to control information). The time domain of the downlink control is according to OFDM symbols, e.g. one downlink control occupies the first 1 or the first 2 symbols of the slot. When the UE knows the PRB where its own downlink control is located, the UE may learn a specific downlink control mapping.

The transmitting end and the receiving end agree that the above-mentioned 12 PRBs are divided into 12 control units (according to the PRB labels, the control units are recorded as 0-11 in sequence), each control unit corresponds to one PRB in the frequency domain, and 2 symbols are corresponding to the time domain (here, 2 symbols are assumed). The transmitting end and the receiving end agree that every 2 control units correspond to one index value. For example, control units 0 to 1 configure index value 0, control units 2 to 3 configure index value 1, control units 4 to 5 configure index value 2, control units 6 to 7 configure index value 3, control units 8 to 9 configure index value 4, and control units 10 to 11 configure index value 5.

The transmitting end and the receiving end agree that the number of the UE in the control group is used as an index value, and a control unit corresponding to the index value is the beginning of the resource position of the second-stage control of the UE. The transmitting end allows to determine the number of control units needed when the second level control of the UE is actually transmitted according to requirements (e.g. channel quality situation, whether the control domain resources are tight, etc.). In general, the more control units are used, the higher the reliability of the transmitted control information, and the more control units are used, the higher the aggregation degree of the control information is, the higher the reliability is, and the number of aggregation degree levels that can be used by the control information is generally specified, and different aggregation degrees correspond to control resources requiring different data. The transmitting end may transmit the aggregation level information or information having the same effect as the aggregation level information to the receiving end. The sending end does not need to send the information, and the receiving end needs to perform blind detection and reception according to different aggregation levels.

The transmitting end and the receiving end agree on the index value corresponding to the start of the resource position controlled according to the second level, and occupy the control units corresponding to 1, 2 or 4 continuous index values (including the start index value). The transmitting end and the receiving end agree that the index value corresponding to the number is the initial index value of the control unit controlled by the second stage of the UE.

The transmitting end uses a control unit corresponding to the index value 0 to transmit second-level control for the UE0 with the number 0 in the control group. The transmitting end uses a control unit corresponding to the index value 1 to transmit second-level control for the UE1 with the number 1 in the control group. The transmitting end uses the index value 2 as the initial index value for the UE2 with the number 2 in the control group, and uses the control units corresponding to the index values 2 and 3 to transmit the second-stage control.

The receiving end needs to start to carry out second-stage control information of the blind detection receiving end according to the index value corresponding to the number. The blind detection of the receiving end can be respectively carried out according to the polymerization degree. For example, the UE0 first performs a control unit corresponding to the blind detection index value 0 according to the first aggregation degree, and if the channel quality is good, the UE0 will detect the second level control information of itself. The UE1 performs the control unit corresponding to the blind detection index value 1 according to the first aggregation degree, and the UE1 also detects the second-level control information of itself. The UE2 performs blind search on the control unit corresponding to the index value 2 according to the first aggregation degree, the UE2 does not detect the second-level control information of itself, then the UE2 performs blind search on the control unit corresponding to the index value 2 and the index value 3 according to the second aggregation degree, and it is assumed that the channel quality is better, and at this time, the UE2 also detects the second-level control information of itself.

This way allows the transmitting end to adjust the number of resources of the second-level control information according to the need, so as to improve reliability, but compared with the fixed number of resources adopted by the second-level control information in the third embodiment and the fourth embodiment, the blind detection complexity of the UE is increased in the way provided in the present embodiment.

Sixth embodiment

The transmitting end configures the control group for the UE through higher layer signaling, for example, using UE-specific RRC messages. For example, UE0, UE1, and UE2 are configured in the same control group. The transmitting end carries the number of each UE in the control group in the higher layer signaling at the same time, for example, UE0 is numbered 0, UE1 is numbered 1, and UE2 is numbered 2.

The transmitting end sends signaling indication (which may be the same signaling) to the UE0, UE1 and UE2 through the first level control, and the location range of their second level control resources. For example, the location range of the second level control resource is indicated to be within PRBs denoted by 10 to 21 (note that PRB logical labels may be used here, and actual physical resources may not necessarily be contiguous or may be actual physical resource labels). That is, UE0, UE1, UE2 are used as a control group, and the resource locations of their secondary controls are only in 12 PRBs within the above range, so that the search range of receiving the secondary controls is greatly reduced.

It is assumed that the frequency domain of the downlink control is mapped according to the PRB allocation, for example, the downlink control of one UE is mapped within 2,4 or 8 PRBs (aggregation degree of corresponding control information). The time domain of the downlink control is according to OFDM symbols, e.g. one downlink control occupies the first 1 or the first 2 symbols of the slot. When the UE knows the PRB where its own downlink control is located, the UE may learn a specific downlink control mapping.

The transmitting end and the receiving end agree that the number of the UE in the control group is used as an index value for allowing the start. The index value corresponding to the resource location of the second level control of the UE is after the allowed start index value (also including itself). That is, the UE does not need to detect its own second level control in the resources corresponding to the index value before the start of the index value is allowed, so that the detection range of the UE can be reduced. The transmitting end allows to determine the number of control units when the second level control of the UE is actually transmitted according to requirements (e.g. channel quality situation, whether the control domain resources are tight, etc.). In general, the more control units are used, the higher the reliability of the transmitted control information, and the more control units are used, the higher the aggregation degree of the control information is, the higher the reliability is, and the number of aggregation degree levels that can be used by the control information is generally specified, and different aggregation degrees correspond to control resources requiring different data.

The transmitting end may transmit the aggregation level information or information having the same effect as the aggregation level information to the receiving end. The sending end does not need to send the information, and the receiving end needs to perform blind detection and reception according to different aggregation levels.

The transmitting end and the receiving end agree that, according to the index value corresponding to the number in the control group as the allowed start index value, the control unit corresponding to 1,2 or 4 continuous index values (including the allowed start index value) is occupied. The transmitting end and the receiving end agree that the index value corresponding to the number is the allowed start index value of the control unit of the second-stage control of the UE.

The transmitting end uses a control unit corresponding to the index value 0 to transmit second-level control for the UE0 with the number 0 in the control group. The transmitting end uses the control units corresponding to the index values 1 and 2 to transmit the second-stage control for the UE1 with the number 1 in the control group. The transmitting end uses the index value 2 as the allowed start index value for the UE2 with the number 2 in the control group, but at this time, the index value 2 is occupied by the second level control of the UE1, and at this time, the transmitting end uses the control units corresponding to the index values 3 and 4 after the index value 2 to transmit the second level control of the UE 2.

The receiving end needs to perform blind detection on its own second level control information (including itself) from the allowed start index value (that is, the receiving end does not need to detect the control unit before the allowed start index value). The blind detection of the receiving end can be respectively carried out according to the polymerization degree. For example, the UE0 first performs a control unit corresponding to the blind detection index value 0 according to the first aggregation degree, and the UE0 will detect the second level control information of itself. The UE1 performs blind search for control units corresponding to the index values 1,2, 3,4 and 5 according to the first aggregation degree, the UE1 fails to detect, and then performs blind search for control units corresponding to the index values 1 and 2,2 and 3,3 and 4,4 and 5 according to the second aggregation degree, where the UE1 detects own second-level control information in the control units of the index values 1 and 2. The UE2 performs blind search on the control units corresponding to the index values 2,3,4 and 5 according to the first aggregation degree, the UE2 fails to detect, the UE2 performs blind search on the control units corresponding to the index values 2 and 3,3 and 4,4 and 5 according to the second aggregation degree, and the UE2 detects own second-level control information in the control units with the index values 3 and 4. The UE2 does not need to detect a control unit with index values of 0 and 1, and reduces the blind detection range.

Seventh embodiment

The base station divides the system bandwidth into several sub-bands or into several PRB sets, and the PRBs in each PRB set may be contiguous or discrete when dividing. The base station informs the receiving end of the divided sub-bands or the divided several PRB sets, so that the receiving end knows the range of each sub-band or the range of each PRB set, or only informs the range of the PRB set or the range of the sub-band related to or located by the receiving end.

The base station assigns the receiving end to a certain control group through signaling indication, or the receiving end is divided into a certain control group according to some agreed rules, for example, the receiving end calculates the own control group according to own C-RNTI or ID. Alternatively, the base station may assign a number to the control group used by the receiving end. The base station then divides each sub-band (or PRB set, described below as sub-band, which is similar) into several control units, and one (or more) control units carry the second-level control information of one UE, and configures the index values for the control units.

The control unit may be configured with an index value in two ways:

mode 1: the base station indicates or implies the sub-band or PRB set where the control group is located (i.e., the resource location range of the control group) for the control group, and then transmits the control information of the UEs in the control group in the sub-band or PRB set. The base station and the receiving end agree that the number of the receiving end in the control group corresponds to the index of the control unit in the sub-band where the control group is located (it is assumed here that one control unit carries control information of one receiving end, and when a plurality of control units carry control information of one receiving end, the index value corresponding to the number is used as the initial control unit of the UE control information). The base station sends the control information of the receiving end in the corresponding control unit of each receiving end, and the receiving end receives the control information of the base station in the corresponding control unit.

Mode 2: the base station indicates or implies the sub-band or PRB set where the control group is located (i.e., the resource location range of the control group) for the control group, and then transmits the control information of the UEs in the control group in the sub-band or PRB set. The base station and the receiving end agree that the receiving end calculates an initial control unit of control information in a sub-band of the receiving end according to the self C-RNTI. The transmitting end also transmits the control information of the receiving end in the corresponding control unit according to the same rule.

In all the above embodiments, the base station may dynamically reconfigure the sub-band or PRB set of the control group, so that the resources for control signaling transmission may be adjusted according to the average condition of the channel quality of the receiving end in the control group. The base station may also dynamically reconfigure a control group in which the receiving end is located. For example, the base station may always divide the receiving ends with similar channel quality into the same control group, so that a relatively consistent aggregation degree may be configured to send the control information, thereby simplifying the complexity of the receiving end to retrieve the control information.

Eighth embodiment

In the third to seventh embodiments, the transmitting end can notify the second level control of the receiving end of the aggregation level used by the second level control, for example, the transmitting end notifies the second level control of the aggregation level of the UE through the first level control or higher layer signaling (the higher layer signaling described herein includes a UE-specific RRC message, or a UE group RRC message). And the UE detects the second-level control in the second-level control resource position according to the aggregation degree. Thus, the blind detection of the UE according to different aggregation degrees is avoided, and the complexity of the UE is reduced.

Or in the third to seventh embodiments, the transmitting end configures a control group for the UE through the first-stage control or the higher-layer signaling, and configures a second-stage control corresponding aggregation degree of the UE in the control group. In this way, the transmitting end always uses the corresponding aggregation degree to transmit the second-level control of the UE in the control group, and the UE always detects its own second-level control in the control group according to the corresponding aggregation degree. Thus, the blind detection of the UE according to different aggregation degrees is avoided, and the complexity of the UE is reduced.

Alternatively, in the third to seventh embodiments, the transmitting end configures a control group for the UE through the first level control or the higher layer signaling, and configures the maximum and/or minimum aggregation levels allowed to be used by the second level control of the UE in the control group. Thus, the transmitting end always uses the aggregation degree in the corresponding range to transmit the second-level control of the UE in the control group, and the UE always detects the second-level control of the UE in the control group according to the aggregation degree in the corresponding range. The aggregation degree level number of the UE needing blind detection is reduced to a certain extent, so that the complexity of the UE is reduced.

Ninth embodiment

The present embodiment provides an indication device for downlink control resource location, where the device is disposed at a transmitting end, for example, in a base station, fig. 3 is a block diagram of the device, and as shown in fig. 3, the device 30 includes the following components:

An indication module 31, configured to indicate and/or imply a location range of the second level control resource by signaling; and indicating and/or implying the control group used by the receiving end, wherein the transmitting end combines the control group to indicate and/or implying the second-stage control resource of the receiving end.

Optionally, the apparatus 30 may further include a second indication module (not shown in the figure) configured to divide the time domain and/or frequency domain resources within the resource location range of the second level of control into one or more control units, where the one or more control units correspond to an index value.

The resource range of the second-level control referred to in this embodiment includes at least the second-level control resource of one receiving end.

The signaling may specifically include first-level control or higher-layer signaling.

The location range of the second-level control resource comprises the location of time domain resource and/or frequency domain resource, wherein the location of the frequency domain resource is the location of one or more of a sub-band or a physical resource block PRB, a resource element group REG, a control channel element RE or a resource element; the location of the time domain resource includes: the position of the time domain resource symbol and the number of symbols which are pre-agreed with the receiving end; or the number of the symbols is indicated to the receiving end through a high-layer signaling or a physical layer signaling, and the positions of the symbols are pre-agreed with the receiving end; or the position of the symbol is indicated to the receiving end through a high-layer signaling or a physical layer signaling, and the number of the symbol is pre-agreed with the receiving end; the number of the pre-agreed time-frequency resource symbols is one or two, and the pre-agreed positions are the former symbol or the former two symbols of the scheduling unit.

Optionally, the above indication module 31 is further configured to: indicating or implying an index value corresponding to a second-level control resource of the receiving end through a first-level control or high-level signaling, or an initial index value corresponding to the second-level control resource of the receiving end, or an allowable initial index value corresponding to the second-level control resource of the receiving end; and/or, indicating or implying a number of the receiving end in the control group used by the receiving end, wherein the number is used for determining second-level control resources of the receiving end in the resource range of the second-level control; and/or establishing a corresponding relation between the numbers and the index values, implying the index values corresponding to the second-stage control resources of the receiving end through the numbers, implying the initial index values corresponding to the second-stage control resources of the receiving end through the numbers, implying the allowed starting index values corresponding to the second-stage control resources of the receiving end through the numbers, or directly indicating the second-stage control resources of the receiving end by taking the numbers as the index values, wherein the corresponding relation comprises a one-to-one corresponding relation between the numbers and the index values, a one-to-many relation between the numbers and the index values, a many-to-one relation between the numbers and the index values, or a corresponding relation between the numbers and the index values according to the specified offset.

The indication module 31 provided in this embodiment may specifically indicate/implicate the second-stage downlink control resource in the following several ways:

or starting from the control unit corresponding to the initial index value, and taking one or more control units with discrete appointed patterns as second-stage downlink control resources of the receiving end according to the quantity of the control units appointed with the receiving end in advance;

The above-mentioned permission start index value refers to that the second-stage control resource of the receiving end is at the control unit corresponding to the permission start index value, or after the control unit corresponding to the permission start index value, or the permission start index value refers to that the second-stage control resource of the receiving end is not before the control unit corresponding to the permission start index value, or the permission start index value refers to that the second-stage control resource of the receiving end is at the permission start index value, or after the permission start index value, or the permission start index value refers to that the second-stage control resource of the receiving end is not before the permission start index value.

In this embodiment, the receiving end using the same control group has the same first-stage control information in the resource controlled by the first stage, and/or uses the same radio network temporary identifier RNTI to scramble the first-stage control information; the number of the receiving ends using the same control group is at least one, and the second level control of the receiving ends is in the position range of the same second level control resource.

The above-mentioned indication module 31 is also used for: indicating the minimum and/or maximum aggregation degree allowed to be used by the first-level control or the higher-level signaling or the second-level control of the receiving end in the control group or using the same control group; or, the aggregation degree used by the second-level control of the receiving end in the control group or using the same control group is indicated by the first-level control or the high-level signaling, or the aggregation degree used by the second-level control of one receiving end is indicated by the first-level control or the high-level signaling.

The above-mentioned indication module 31 is specifically configured to: the method comprises the steps of dividing the system bandwidth into a plurality of sub-bands or a plurality of physical resource block PRB sets, and transmitting the sub-bands or the PRB sets of the system bandwidth division to a receiving end through first-level control signaling or high-level signaling, wherein PRBs in one PRB set are continuous or discrete.

The above-mentioned indication module 31 may be specifically used for: and allocating the receiving end to a control group, and allocating the number in the control group used by the receiving end to the receiving end through a higher layer signaling or physical layer signaling instruction or through an implied deducing mode, wherein the implied deducing mode comprises that the receiving end judges the control group used by the receiving end according to the ID or the C-RNTI of the receiving end.

The above-mentioned indication module 31 may be specifically used for: the control units are divided by the physical resource blocks PRB, REG, CCE or REs as basic units, and one or more control units carry one second level control.

The above-mentioned indication module 31 may be specifically used for: the transmitting end allocates a position range of a corresponding second-stage control resource for the control group through downlink control information DCI in the first-stage control; or when the resource range of the second-level control is formed by PRBs, the transmitting end describes the PRBs corresponding to the position range of the second-level control resource through the resource allocation information in the DCI in the first-level control.

Tenth embodiment

The present embodiment provides a downlink control resource location determining device, where the device is applied to a receiving end, fig. 4 is a block diagram of the device, and as shown in fig. 4, the device 40 specifically includes the following components:

The learning module 41 is configured to learn, according to the received signaling or through a preset rule, a location range of a second-level control resource corresponding to the receiving end; the receiving end acquires a control group used by the receiving end through preset convention according to the received signaling and/or the receiving end, and the receiving end acquires a second-level control resource of the receiving end by combining the control group.

The signaling may specifically include: first level control, physical layer or higher layer signaling.

Alternatively, the learning module 41 may be further configured to: the receiving end knows that the time domain and/or frequency domain resources in the position range of the second-level control resources are divided into one or more control units according to the preset rule, wherein one or more control units correspond to an index value.

In this embodiment, the resource range of the second level control includes at least the resource of the second level control of the receiving end.

The above-mentioned learning module may be specifically used for: obtaining an index value corresponding to a second-level control resource of a receiving end indicated or implied by the first-level control or high-level signaling, or a starting index value corresponding to the second-level control resource of the receiving end, or an allowable starting index value corresponding to the second-level control resource of the receiving end, and/or obtaining a number of the receiving end indicated or implied by the sending end in a control group used by the receiving end, wherein the number is used for determining the second-level control resource of the receiving end in a resource range of the second-level control; the corresponding relation exists between the number and the index value, the number implies the index value and/or the initial index value corresponding to the second-level control resource of the receiving end, and/or the starting index value is allowed, or the number is used as the index value to directly indicate the second-level control resource of the receiving end, wherein the corresponding relation comprises a one-to-one corresponding relation between the number and the index value, a one-to-many relation between the number and the index value, or the number and the index value are corresponding according to the specified offset.

The learning module may specifically be configured to: and calculating the second-stage control resource position of the receiving end in the second-stage control resource range or the starting position for starting searching according to the self identity ID or the C-RNTI of the receiving end.

The second-stage downlink control resource acquired by the acquiring module specifically can have the following cases:

In this embodiment, the receiving end using the same control group has the same first-stage control information in the resource controlled by the first stage, and/or uses the same radio network temporary identifier RNTI to scramble the first-stage control information; the number of the receiving ends of the same control group is at least one, and the second level of the receiving ends is controlled in the position range of the same second level control resource; the receiving end using the same control group has the same first-stage control information in the resource controlled by the first stage, and/or the same radio network temporary identifier RNTI is used for scrambling the first-stage control information; the number of the receiving ends using the same control group is at least one, and the second level control of the receiving ends is in the position range of the same second level control resource.

The learning module 41 described above may also be used in particular: acquiring the minimum and/or maximum aggregation degree allowed to be used by the second-level control of the receiving end in the control group or using the same control group through the first-level control or high-level signaling; or, the aggregation degree used by the second-level control of the receiving end in the control group or using the same control group is obtained through the first-level control or the high-level signaling, or the aggregation degree used by the second-level control of the receiving end is obtained through the first-level control or the high-level signaling.

The learning module 41 described above may also be used in particular: the sub-band or PRB set of the system bandwidth division is known through the first-level control signaling or the higher-level signaling, wherein the PRBs in one PRB set are continuous or discrete.

The learning module 41 described above may also be used in particular: the number in the control group used by the receiving end is obtained through the high-layer signaling or the physical layer signaling, or the receiving end judges the control group used by the receiving end according to the ID or the C-RNTI of the receiving end.

In this embodiment, the location range of the second-level control resource may be divided into control units by the transmitting end in advance according to the physical resource block PRB, REG, CCE or RE as a basic unit, where one or more control units carry one second-level control.

The learning module 41 described above may also be used in particular: acquiring the position range of a second-stage control resource allocated for the control group through downlink control information DCI in the first-stage control; or when the resource range of the second-level control is formed by PRBs, the PRBs corresponding to the resource range of the second-level control are known through the resource allocation information in the DCI in the first-level control.

Eleventh embodiment

The embodiment of the invention also relates to a computer program, a storage medium (memory) storing the program or the sequence set, and a base station device (transmitting end device).

The program is used for realizing the indication method of the downlink control resource position, and specifically comprises the following steps:

indicating and/or implying a location range of the second level control resource by signaling; and indicating and/or implying the control group used by the receiving end, wherein the transmitting end combines the control group to indicate and/or implying the second-level control resource of the receiving end.

Wherein the storage medium (memory) is mainly for storing the above-described program, and therefore, the present embodiment does not describe the program in the storage medium in detail; the storage medium may store the program.

The above method for indicating the position of the downlink control resource may be performed by being implemented in the base station device. As shown in fig. 5, the base station apparatus 50 may include one or more (only one is shown in the figure) processors 52, (the processors 52 may include, but are not limited to, a microprocessor MCU, a programmable logic device FPGA, etc. processing means), a memory 54 for storing data, and a data transceiver 56 for communication functions. It will be appreciated by those skilled in the art that the structure shown in fig. 5 is merely illustrative and is not intended to be a single limitation on the structure of the base station described above. For example, the base station apparatus 50 may further include more or less components than those shown in fig. 5, or have a different configuration from that shown in fig. 5 by splitting or combining the above functions.

The memory 54 may be used to store software programs and modules of the application software, and program instructions/modules corresponding to the method for indicating the position of the downlink control resource disclosed in the foregoing embodiment may be stored in the memory 54, and the method for indicating the position of the downlink control resource is described in detail in the foregoing embodiment, so that the detailed description of this embodiment will not be repeated.

The processor 52 executes various functional applications and data processing, i.e., implements the methods described above, by running software programs and modules stored in the memory 54. Memory 54 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 54 may further include memory (cloud memory) remotely located with respect to the processor 52, which may be connected to the mobile terminal 50 via a network. Wherein the network includes, but is not limited to, the internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

The data transceiver 56 is used to receive or transmit data via a network. The network may include a wireless network provided by a communication provider of the mobile terminal 50. In one example, the transmission device 56 includes a network adapter (Network Interface Controller, simply referred to as NIC) that can connect to other network devices through a base station to communicate with the internet. In one example, the transmission device 56 may be a Radio Frequency (RF) module, which is used to communicate with the internet wirelessly.

Twelfth embodiment

The embodiment of the invention also relates to a computer program, a storage medium storing the program or the sequence set and a receiving end device (terminal device).

The program is configured to implement the method for determining the position of the downlink control resource provided in the foregoing embodiment, where the method includes:

acquiring the position range of the second-stage control resource corresponding to the receiving end according to the received signaling and/or the preset convention; and acquiring a control group used by the receiving end through preset convention according to the received signaling and/or the receiving end, wherein the receiving end combines the control group indication and/or the second-level control resource implying the receiving end.

Wherein the storage medium is mainly for storing the above-mentioned program, and therefore, the present embodiment does not describe the program in the storage medium in detail; the storage medium may store the program.

The technical solution of the method for determining the position of the downlink control resource disclosed in the foregoing embodiment may be implemented at the receiving end (terminal device). The terminal may be a mobile terminal (a device with a processing function such as a mobile phone or a tablet computer), or may be a computer terminal or a similar device. In this embodiment, the mobile terminal is taken as an example to be operated, and fig. 6 is a schematic hardware structure of the mobile terminal for implementing the method for determining the position of the downlink control resource according to the embodiment of the present invention. As shown in fig. 6, the terminal device 60 may include one or more (only one is shown in the figure) processors 62 (the processors 62 may include, but are not limited to, a microprocessor MCU or a processing device such as a programmable logic device FPGA), a memory 64 for storing data, and a data transceiver 66 for communication functions. It will be appreciated by those skilled in the art that the structure shown in fig. 6 is merely illustrative and is not intended to be a single limitation on the structure of the base station described above. For example, the base station apparatus 60 may further include more or less components than those shown in fig. 6, or have a different configuration from that shown in fig. 6 by splitting or combining the above functions.

The memory 64 may be used to store software programs and modules of the application software, and program instructions/modules corresponding to the method for determining the position of the downlink control resource disclosed in the foregoing embodiment may be stored in the memory 64, and the method for determining the position of the downlink control resource is described in detail in the foregoing embodiment, so that the detailed description of this embodiment will not be repeated.

The processor 62 performs various functional applications and data processing, i.e., implements the methods described above, by running software programs and modules stored in the memory 64. Memory 64 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 64 may further include memory (cloud memory) remotely located with respect to the processor 62, which may be connected to the mobile terminal 60 via a network. Such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The data transceiver 66 is used to receive or transmit data via a network. The network may include a wireless network provided by a communication provider of the mobile terminal 60. In one example, the transmission means 66 comprises a network adapter (Network Interface Controller, simply referred to as NIC) that can be connected to other network devices via a base station to communicate with the internet. In one example, the transmission device 66 may be a Radio Frequency (RF) module, which is used to communicate with the internet wirelessly.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, and accordingly the scope of the invention is not limited to the embodiments described above.

Claims

1. The method for indicating the position of the downlink control resource is characterized by comprising the following steps:

the sending end indicates and/or implies the position range of the second-level control resource through signaling;

the sending end indicates and/or implies a control group used by the receiving end, and the sending end combines the control group to indicate and/or implies a second-level control resource of the receiving end;

the method further comprises the steps of:

the sending end divides the time domain and/or frequency domain resources in the position range of the second-level control resources into one or more control units, and the one or more control units correspond to an index value.

2. The method according to claim 1, wherein the method further comprises:

the index value corresponding to the second-level control resource of the receiving end is indicated or implied through the first-level control or high-level signaling, or the initial index value corresponding to the second-level control resource of the receiving end, or the allowable initial index value corresponding to the second-level control resource of the receiving end.

3. The method according to claim 1, wherein the method further comprises:

and indicating or implying the number of the receiving end in the control group used by the receiving end, wherein the number is used for determining second-level control resources of the receiving end in the range of the second-level control resources.

4. A method according to claim 3, characterized in that the method further comprises:

and establishing a corresponding relation between the number and the index value, implying the index value corresponding to the second-stage control resource of the receiving end through the number, implying the initial index value corresponding to the second-stage control resource of the receiving end through the number, implying the allowable initial index value corresponding to the second-stage control resource of the receiving end through the number, or directly indicating the second-stage control resource of the receiving end by taking the number as the index value.

5. The method of claim 4, wherein the correspondence comprises a one-to-one correspondence of the number and index value, or a one-to-many correspondence of the number and index value, or a many-to-one correspondence of the number and index value, or a correspondence of the number and index value according to a specified offset.

6. The method according to claim 2, wherein the sending end incorporates a control group indication and/or implies a second level control resource of the receiving end, comprising:

Starting from the initial index value, according to the number of control units pre-agreed with a receiving end, the control units corresponding to one or more continuous index values are second-level downlink control resources of the receiving end;

or starting from the initial index value, according to the number of control units pre-agreed with a receiving end, taking the control units corresponding to one or more index values with discrete agreed patterns as second-stage downlink control resources of the receiving end;

or starting from the control unit corresponding to the initial index value, and according to the number of the control units pre-agreed with the receiving end, continuously using one or more control units as a second-stage downlink control resource of the receiving end;

or starting from the control unit corresponding to the initial index value, and taking one or more control units with discrete appointed patterns as second-stage downlink control resources of the receiving end according to the number of the control units appointed with the receiving end in advance.

7. The method according to claim 2, wherein the sending end incorporates a control group indication and/or implies a second level control resource of the receiving end, comprising:

Or starting from the initial index value, according to the number of control units corresponding to the transmission requirement of a second-level control, using the control units corresponding to one or more discrete index values according to the agreed pattern as the second-level control resources of the receiving end;

or starting from the control unit corresponding to the initial index value, determining one or more control units with continuous quantity as second-stage downlink control resources of the receiving end according to the quantity of the control units corresponding to the transmission requirement of one second-stage control;

or starting from the control unit corresponding to the initial index value, and taking one or more discrete control units according to the agreed pattern as second-stage control resources of the receiving end according to the number of the control units corresponding to the transmission requirement of second-stage control.

8. The method according to claim 2, wherein the allowed start index value refers to that the second level control resource of the receiving end is at a control unit corresponding to the allowed start index value, or after a control unit corresponding to the allowed start index value, or the allowed start index value refers to that the second level control resource of the receiving end is not before the control unit corresponding to the allowed start index value.

9. The method according to claim 2, wherein the allowed start index value refers to a position where an index value corresponding to the second level control resource of the receiving end is an allowed start index value, or after the allowed start index value, or the allowed start index value refers to a position where an index value corresponding to the second level control resource of the receiving end is not before the allowed start index value.

10. The method according to claim 1, characterized in that the receiving end using the same control group has the same first level control information within the resources of the first level control and/or the first level control information is scrambled using the same radio network temporary identity, RNTI;

11. The method according to claim 1, wherein the method further comprises:

indicating the minimum and/or maximum aggregation degree allowed to be used by the first-level control or the higher-level signaling, wherein the second-level control is used in the control group or uses the receiving end of the same control group;

alternatively, the degree of aggregation used by the second level control within the control group or using the receiving end of the same control group is indicated by the first level control or the higher layer signaling.

12. The method according to claim 1, wherein the method further comprises:

the second level control of a receiving end is indicated to use the degree of aggregation through the first level control or the higher layer signaling.

13. The method according to claim 1, wherein the method further comprises:

dividing a system bandwidth into a plurality of sub-bands or a plurality of Physical Resource Block (PRB) sets;

and transmitting the sub-band or the PRB set of the system bandwidth division to a receiving end through the first-level control signaling or the higher-level signaling, wherein the PRBs in the PRB set are continuous or discrete.

14. The method according to claim 1, wherein the method further comprises:

and distributing the receiving end to a control group, and distributing the number in the control group used by the receiving end to the receiving end through a higher layer signaling or physical layer signaling instruction or through an implied deducing mode, wherein the implied deducing mode comprises that the receiving end judges the control group used by the receiving end according to the ID or the C-RNTI of the receiving end.

15. The method of claim 1, wherein the controlling unit comprises:

the control units are divided by the physical resource blocks PRB, REG, CCE or REs as basic units, and one or more control units carry one second level control.

16. The method according to claim 1, wherein the signaling by the transmitting end indicates and/or implies a location range of the second level control resource, including:

the transmitting end allocates a position range of a corresponding second-stage control resource for the control group through downlink control information DCI in the first-stage control;

or when the position range of the second-level control resource is formed by PRBs, the transmitting end describes the PRBs corresponding to the position range of the second-level control resource through the resource allocation information in the DCI in the first-level control.

17. The method of claim 1, wherein the signaling comprises:

indicated by first level control or higher layer signaling.

18. The method according to claim 1, wherein the range of locations of the second level control resources comprises locations of time domain resources and/or frequency domain resources, the locations of the frequency domain resources being locations where one or more of a subband or a physical resource block PRB, a resource element group REG, a control channel element RE, or a resource element are located;

the location of the time domain resource includes:

the position of the time domain resource symbol and the number of symbols which are pre-agreed with the receiving end;

Or indicating the number of symbols to a receiving end through a high-layer signaling or a physical layer signaling, wherein the positions of the symbols are pre-agreed with the receiving end;

or indicating the positions of symbols to a receiving end through a high-layer signaling or a physical layer signaling, wherein the number of the symbols is pre-agreed with the receiving end;

or indicating or pre-agreeing the scheduling unit where the time domain resource is located through signaling.

19. The method of claim 18, wherein the number of pre-agreed time-frequency resource symbols is one or two, and wherein the pre-agreed time-domain resource symbols are located one or two symbols before the scheduling unit.

20. A method according to any one of claims 1 to 19, wherein the resources of the second level control comprise at least the second level control resources of a receiving end.

21. The method for determining the position of the downlink control resource is characterized by comprising the following steps:

the receiving end obtains the position range of the second-stage control resource corresponding to the receiving end according to the received signaling and/or through preset convention;

the receiving end acquires a control group used by the receiving end according to the received signaling and/or through preset convention, and the receiving end acquires own second-level control resources by combining the control group;

The method further comprises the steps of:

the receiving end knows that the time domain and/or frequency domain resources in the position range of the second-stage control resources are divided into one or more control units according to the preset convention, and the one or more control units correspond to an index value.

22. The method of claim 21, wherein the method further comprises:

and acquiring an index value corresponding to the second-level control resource of the receiving end indicated or implied by the first-level control or high-level signaling, or a starting index value corresponding to the second-level control resource of the receiving end, or an allowable starting index value corresponding to the second-level control resource of the receiving end.

23. The method of claim 21, wherein the method further comprises:

and acquiring the number, indicated or implied by the sending end, of the receiving end in the used control group, wherein the number is used for determining second-level control resources of the receiving end in a second-level control resource range.

24. The method of claim 21, wherein the method further comprises:

and the receiving end calculates the second-stage control resource position or the initial position for starting searching of the receiving end in the resource range of the second-stage control according to the self identity ID or the C-RNTI.

25. The method of claim 23, wherein the step of determining the position of the probe is performed,

the number has a corresponding relation with the index value, the number implies the index value and/or the initial index value corresponding to the second-stage control resource of the receiving end, and/or the initial index value is allowed, or the number is used as the index value to directly indicate the second-stage control resource of the receiving end.

26. The method of claim 25, wherein the correspondence includes a one-to-one correspondence of the number and index value, or a one-to-many correspondence of the number and index value, or a many-to-one correspondence of the number and index value, or a correspondence of the number and index value according to a specified offset.

27. The method of claim 25, wherein starting from the starting index value, the control units corresponding to the consecutive one or more index values are second-level downlink control resources of the receiving end according to a number of control units pre-agreed with the receiving end;

28. The method of claim 25, wherein the step of determining the position of the probe is performed,

29. The method of claim 25, wherein the allowed start index value indicates that the second level control resource of the receiving end is at or after a control unit corresponding to the allowed start index value, or the allowed start index value indicates that the second level control resource of the receiving end is not before the control unit corresponding to the allowed start index value.

30. The method of claim 25, wherein the allowed start index value refers to a position where an index value corresponding to a second level control resource of the receiving end is an allowed start index value, or wherein the allowed start index value refers to a position after the allowed start index value, or wherein the index value corresponding to the second level control resource of the receiving end is not before the allowed start index value.

31. The method according to claim 21, characterized in that the receiving end using the same control group has the same first level control information within the resources of the first level control and/or the first level control information is scrambled using the same radio network temporary identity, RNTI;

32. The method of claim 21, wherein the method further comprises:

the minimum and/or maximum aggregation degree allowed to be used by the second-level control of the receiving end in the control group or using the same control group is known through the first-level control or high-level signaling;

or, the polymerization degree used by the second-stage control in the control group or using the receiving end of the same control group is known through the first-stage control or the high-layer signaling.

33. The method of claim 21, wherein the method further comprises:

the polymerization degree used by the second-level control of one receiving end is known through the first-level control or the high-level signaling.

34. The method of claim 21, wherein the method further comprises:

the sub-band or PRB set of the system bandwidth division is known through the first-level control signaling or the higher-layer signaling, wherein the PRBs in the PRB set are continuous or discrete.

35. The method of claim 21, wherein the method further comprises:

The number in the control group used by the receiving end is obtained through the high-layer signaling or the physical layer signaling, or the receiving end judges the control group used by the receiving end according to the ID or the C-RNTI of the receiving end.

36. The method of claim 21, wherein the control unit comprises:

the control units are divided by physical resource blocks PRB, REG, CCE or REs as basic units, wherein one or more control units carry one second level control.

37. The method of claim 21, wherein the receiving end obtains the location range of the second-level control resource corresponding to the receiving end according to the received signaling and/or through a preset convention, and the method comprises:

acquiring the position range of a second-stage control resource allocated for the control group through downlink control information DCI in the first-stage control;

or when the resource range of the second-level control is formed by PRBs, acquiring the PRBs corresponding to the position range of the second-level control resource through the resource allocation information in the DCI in the first-level control.

38. The method of claim 21, wherein the signaling comprises:

first level control, physical layer or higher layer signaling.

39. The method according to claim 21, wherein the range of locations of the second level control resources comprises locations of time domain resources and/or frequency domain resources, the locations of the frequency domain resources being locations where one or more of a subband or a physical resource block PRB, a resource element group REG, a control channel element RE, or a resource element are located;

the location of the time domain resource includes:

or the positions of the symbols are indicated to the receiving end through higher layer signaling or physical layer signaling, and the number of the symbols is pre-agreed with the receiving end.

40. The method of claim 21, wherein the number of pre-agreed time-frequency resource symbols is one or two, and the pre-agreed location is the previous one or the previous two symbols in the scheduling unit.

41. A method as claimed in any one of claims 21 to 40, wherein the range of resources controlled by the second level includes at least the resources controlled by the second level of a receiving end.

42. An indication device for downlink control resource position, which is characterized in that the device is applied to a transmitting end and comprises:

the first indication module is used for indicating and/or implying the position range of the second-level control resource through signaling; the sending end indicates and/or implies a control group used by the receiving end, and the sending end combines the control group to indicate and/or implies a second-level control resource of the receiving end; the apparatus further comprises:

and the second indication module is used for dividing the time domain and/or frequency domain resources in the position range of the second-stage control resources into one or more control units, and corresponding the one or more control units to an index value.

43. A downlink control resource location determining apparatus, wherein the apparatus is applied to a receiving end, and includes:

the acquisition module is used for acquiring the position range of the second-stage control resource corresponding to the receiving end according to the received signaling and/or through preset convention; acquiring a control group used by the receiving end according to the received signaling and/or through preset convention, wherein the receiving end acquires own second-level control resource by combining with the control group; the learning module is further configured to:

44. A transmitting terminal comprising a processor and a memory storing instructions executable by the processor, and a data transceiver for data transmission and/or reception, the instructions, when executed by the processor, performing the operations of:

indicating and/or implying a location range of the second level control resource by signaling;

the method comprises the steps that a control group used by a receiving end is indicated and/or implied, and a second-level control resource of the receiving end is indicated and/or implied by the sending end in combination with the control group;

dividing the time domain and/or frequency domain resources in the position range of the second-stage control resources into one or more control units, and corresponding one index value to the one or more control units.

45. A receiving end comprising a processor and a memory storing instructions executable by the processor, and a data transceiver for data transmission and/or reception, which instructions, when executed by the processor, perform the operations of:

Obtaining the position range of the second-stage control resource corresponding to the receiving end according to the received signaling and/or through preset convention;

the receiving end acquires a second-level control resource of the receiving end according to the received signaling and/or through preset convention;

and knowing that the time domain and/or frequency domain resources in the position range of the second-stage control resources are divided into one or more control units according to the preset convention, wherein the one or more control units correspond to an index value.