WO2018127006A1

WO2018127006A1 - Downlink control resource position indication method and device, downlink control resource position determination method and device, sending terminal, and receiving terminal

Info

Publication number: WO2018127006A1
Application number: PCT/CN2017/119884
Authority: WO
Inventors: 苟伟; 毕峰; 郝鹏
Original assignee: 中兴通讯股份有限公司
Priority date: 2017-01-06
Filing date: 2017-12-29
Publication date: 2018-07-12
Also published as: CN108282872B; CN108282872A

Abstract

The present invention provides a downlink control resource position indication method and device, a downlink control resource position determination method and device, a sending terminal, and a receiving terminal, for solving the problem in the related art of high complexity in the second-stage control of blind tests of a terminal caused by a sending mode of downlink control information. The downlink control resource position indication method comprises: a sending terminal indicates and/or implies a resource position range for second-stage control by means of signaling, the sending terminal indicates and/or implies a control group used by a receiving terminal, and the sending terminal indicates and/or implies a second-stage control resource of the receiving terminal in combination with the control group. The solution reduces the complexity in the second-stage control of blind tests of a receiving terminal.

Description

Indication method, determination method, device, transmitting end and receiving end of downlink control resource location

Technical field

The present disclosure relates to the field of communications, and in particular, to an indication method, a determining method, a device, a transmitting end, and a receiving end of a downlink control resource location.

Background technique

The new generation mobile communication system NR (New Radio) is being researched and standardized. This is one of the current 3GPP priorities. Currently, there are three typical types of services in the NR system that can be identified. Common services include: eMBB (enhanced Mobile BroadBand), URLLC (Ultra-Reliable and Low Latency Communications) and mMTC (massive machine type communication). These services have different requirements for delay, coverage and reliability. For example, for eMBB, the emphasis is on high peak transmission rates, low latency requirements (low latency is not required), and moderate reliability requirements. For URLLC, emphasis is placed on low latency, high reliability transmission, which is very demanding for latency. For mMTC, a large number of terminals are emphasized, the connection density is large and the transmission coverage is required, and there is almost no requirement for delay.

In the NR system, the length of the slot, such as a slot, becomes shorter due to the scheduling unit. In particular, a larger subcarrier spacing is used in the high frequency band. For example, if a subcarrier spacing of 480 Khz (LTE is 15 KHz) is used, the length of the corresponding slot is shortened by 32 times with respect to the LTE subframe length. If the LTE-like mechanism is still used to send downlink control information, for example, once sent by each scheduling unit, the receiving end needs to perform blind detection downlink control information at the beginning of each scheduling unit, which will result in the complexity of blind detection at the receiving end. 32 times LTE, obviously, this is hard to accept the complexity.

Summary of the invention

The present disclosure provides a method, a method, a device, a sending end, and a receiving end of a downlink control resource location, which are used to solve the problem that the downlink control information is sent in the related art, which results in a second level of blind detection. problem.

According to an aspect of the present disclosure, a method for indicating a location of a downlink control resource is provided, including: the sender indicates by signaling and/or implies a range of locations of the second-level control resource; the sender indicates and/or implies the receiver. The control group used, the sender combines the control group indication and/or implies the second level of control resources of the receiver.

According to a second aspect of the present disclosure, a method for determining a downlink control resource location includes: receiving, by a receiving end, a location range of a second-level control resource corresponding to a receiving end according to the received signaling and/or by a predetermined agreement; The receiving end learns the control group used by the receiving end according to the received signaling and/or by a predetermined agreement, and the receiving end learns its own second-level control resource in combination with the control group.

According to still another aspect of the present disclosure, a device for indicating a downlink control resource location is provided. The device is applied to a transmitting end, and includes: a first indication module, configured to indicate by signaling and/or imply a second-level control resource. Location range; the sender indicates and/or implies the control group used by the receiver, and the sender combines the control group indication and/or implies the second level control resource of the receiver.

According to still another aspect of the present disclosure, a downlink control resource location determining apparatus is provided. The apparatus is applied to a receiving end, and includes: a learning module, configured to learn, according to the received signaling, The second level controls the location range of the resource; according to the received signaling and/or the pre-agreed to know the control group used by the receiving end, the receiving end cooperates with the control group to learn its own second level control resource.

According to still another aspect of the present disclosure, there is provided a transmitting end comprising a processor and a memory storing processor-executable instructions, and a data transceiver for data transmission and/or reception, when the instructions are executed by the processor Performing the following operations: indicating and/or implying the location range of the second-level control resource by signaling; indicating and/or impliating the control group used by the receiving end, the transmitting end combining the control group indication and/or implying the second level of the receiving end Control resources.

According to still another aspect of the present disclosure, there is provided a receiving end, comprising: a processor and a memory storing the processor-executable instructions, and a data transceiver for data transmission and/or reception, when the instructions are processed by the processor When executed, the following operations are performed: the location range of the second-level control resource corresponding to the receiving end is obtained according to the received signaling and/or by a predetermined agreement; and the receiving end is used according to the received signaling and/or by a predetermined agreement. The control group, the receiving end and the control group know their own second-level control resources.

According to still another aspect of the present disclosure, a storage medium is provided, configured to store program code for performing the method according to any of the above aspects of the present disclosure.

The beneficial effects of the disclosure are as follows:

In the solution provided by this embodiment, the sender indicates and/or implies the resource location range of the second-level control, and the division status of the range, and at the same time, the sender indicates and/or implies that the control group used by the receiver is lowered. The receiving end blindly checks the complexity of the second-level downlink control.

DRAWINGS

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

2 is a flowchart of a method for determining a downlink control resource location in a second embodiment of the present disclosure;

3 is a structural block diagram of a pointing device for indicating a downlink control resource position in a ninth embodiment of the present disclosure;

4 is a structural block diagram of a device for determining a downlink control resource position in a tenth embodiment of the present disclosure;

5 is a schematic structural diagram of a transmitting end device in an eleventh embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a receiving end device in a twelfth embodiment of the present disclosure.

detailed description

The technical solutions in the embodiments of the present disclosure are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present disclosure. It is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without departing from the inventive scope are the scope of the disclosure.

First embodiment

This 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 may include the following processing:

Step 101: The transmitting end indicates by signaling and/or implies a location range of the second-level control resource.

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

The resource range of the second-level control includes at least one second-level control resource of the receiving end, and the location range of the second-level control resource includes a location of the time domain resource and/or the frequency domain resource, where the location of the frequency domain resource is a location in which one or more of the PRB, the REG (Resource Element Group), the CCE (Control Channel Element), or the RE (Resource Element) are located; the time domain resource The location may include the following three situations: the location of the time domain resource symbol and the number of symbols pre-agreed with the receiving end; indicating the number of symbols to the receiving end through high layer signaling or physical layer signaling, and the symbol location is pre-agreed with the receiving end. The location of the symbol is indicated to the receiving end by high-level signaling or physical layer signaling, and the number of symbols is pre-agreed with the receiving end, and the number of pre-agreed time-frequency resource symbols is one or two, and the pre-agreed position is The first or first two symbols of the scheduling unit (slot or sub-frame).

Step 102: The sender indicates and/or implies the control group used by the receiver, and the sender combines the control group indication and/or implies the second level control resource of the receiver.

In this embodiment, the receiving end of the same control group has the same first-level control information in the resources controlled by the first level, and/or uses the same RNTI (Network Tempory Identity) scrambling. First-level control information; the number of receiving ends using the same control group is at least one, and the second-level control of the receiving end is within the position range of the same second-level control resource.

The method provided in this embodiment may further include: indicating, by the first level control or the high layer signaling, an index value corresponding to the second level control resource of the receiving end, or a starting index value corresponding to the second level control resource of the receiving end, or The allowable start index value corresponding to the second-level control resource of the receiving end.

In order to facilitate the receiving end to know the second-level control resource that is allocated by itself, the identifier of the number is introduced on the basis of the index value. For example, the sender indicates or implies the number of the receiving end in the control group used by the receiving end. The number is used to determine the second-level control resource of the receiving end in the resource range controlled by the second level. On the basis of this, the number is associated with the index value, and the number corresponding to the second-level control resource of the receiving end is corresponding to the number. The index value implies the start index value corresponding to the second-level control resource of the receiving end by the number, and the allowable start index value corresponding to the second-level control resource of the receiving end is indicated by the number, or the number is used as the index value to directly indicate the second end of the receiving end. Level control resource, wherein the correspondence relationship includes a one-to-one correspondence between the number and the index value, or a one-to-many relationship between the number and the index value, or a relationship between the number and the index value, or the number and the index value are offset according to the specified value. correspond.

The source end of the second-level controlled resource location may be performed in the following manner:

Starting from the starting index value, according to the number of control units pre-agreed with the receiving end, the control unit corresponding to one or more consecutive index values is the second-level downlink control resource of the receiving end;

Or starting from the initial index value, according to the number of control units pre-agreed with the receiving end, the control unit corresponding to one or more index values discrete in the agreed pattern is the second-level downlink control resource of the receiving end;

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

Or, starting from the control unit corresponding to the initial index value, one or more control units discrete in the agreed pattern are the second-level downlink control resources of the receiving end according to the number of control units agreed in advance with the receiving end.

Starting from the starting index value, determining, according to the number of control units corresponding to the transmission requirement of the second level control, determining that the control unit corresponding to one or more consecutive index values is the second level control resource of the receiving end;

Or starting from the starting index value, according to the number of control units corresponding to the transmission requirement of the second level control, the control unit corresponding to one or more index values discrete according to the agreed pattern is the second level control resource of the receiving end;

Or, starting from a control unit corresponding to the initial index value, determining, according to the number of control units corresponding to the transmission requirement of the second level control, determining that the consecutive one or more control units are the second-level downlink control resources of the receiving end;

Or starting from the control unit corresponding to the initial index value, according to the number of control units corresponding to the transmission requirement of the second level control, one or more control units discrete according to the agreed pattern are the second level control resources of the receiving end.

The allowable start index value refers to the second-level control resource of the receiving end at the control unit corresponding to the index value that is allowed to start, or after the control unit corresponding to the index value that allows the start, or the allowable start index value refers to the receiving end. The second-level control resource does not precede the control unit corresponding to the index value that allows the start, or the start index value refers to the index value corresponding to the second-level control resource of the receiving end, where the index value is allowed to start, or After the initial index value, or to allow the start index value, the index value corresponding to the second-level control resource of the receiving end is not before the index value that allows the start.

Optionally, the method provided in this embodiment may further include: indicating, by using the first level control or the high layer signaling, a minimum level and/or a maximum degree of aggregation allowed in the control group or using a second level of the receiving end of the same control group; Or, by using the first level control or the high layer signaling, indicating the degree of aggregation used by the second level control in the control group or using the receiving end of the same control group; or indicating the first level of the receiving end by using the first level control or the higher layer signaling The degree of polymerization used by the secondary control.

The sending end indicates, by the signaling, the location range of the second-level control resource, for example, the method includes: dividing the system bandwidth into multiple sub-bands or multiple physical resource block PRB sets, and receiving the first-level control signaling or high-level signaling. The terminal transmits a subband or a PRB set of system bandwidth partitioning, wherein the PRBs in one PRB set are continuous or discrete.

The sending end indicates the location range of the second-level control resource by using the signaling, or the resource end implied by the second-level control resource location may include: assigning the receiving end to a control group, and adopting high-level signaling or physical layer signaling. The indication or the implicit inference manner is used to allocate the number in the control group used by the receiving end to the receiving end, wherein the implicit inferring manner includes the receiving end determining the control group used by the receiving end according to its own ID or C-RNTI.

The location range of the second-level control resource is divided into one or more control units, and may include, for example:

The control unit is divided according to the physical resource block PRB, REG, CCE or RE, and the divided one or more control units carry a second level control.

The sending end indicates, by using the signaling, the location range of the second-level control resource, where the sending end allocates the location range of the corresponding second-level control resource to the control group by using the downlink control information DCI in the first-level control; or When the resource range of the second-level control is composed of the PRB, the transmitting end describes the PRB corresponding to the resource range controlled by the second-level by the resource allocation information in the DCI in the first-level control.

Second embodiment

This embodiment provides a downlink control resource location determining method, which may be performed by a terminal. FIG. 2 is a flowchart of the method. As shown in FIG. 2, the method may include the following processing:

Step 201: The receiving end learns the location range of the second-level control resource corresponding to the receiving end according to the received signaling and/or by a predetermined agreement.

The resource range controlled by the second level includes at least one resource controlled by the second level of the receiving end.

The receiving end obtains the location range of the second-level control resource corresponding to the receiving end according to the received signaling, and may include: obtaining, by using the downlink control information DCI in the first-level control, the location range of the second-level control resource allocated to the control group Or, when the resource range of the second-level control is composed of the PRB, the PRB corresponding to the resource range controlled by the second-level is learned by the resource allocation information in the DCI in the first-level control.

In addition, the receiving end may further divide the time domain and/or the frequency domain resource in the location range of the second-level control resource according to the pre-agreed into one or more control units, and the 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, where one or more control units carry a second-level control. .

Step 202: The receiving end learns the control group used by the receiving end according to the received signaling and/or the receiving end, and the receiving end instructs the control group to indicate and/or imply its own second-level control resource.

The foregoing signaling includes: first level control, high layer signaling, or physical layer signaling.

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

The receiving end obtains the location range of the second-level control resource corresponding to the receiving end according to the received signaling, or the receiving end obtains the location range of the second-level control resource corresponding to the receiving end by using the pre-agreed, for example, the method may include:

Obtaining an index value corresponding to the second-level control resource of the first-level control or the high-level signaling indication or the implicit receiving end, or a starting index value corresponding to the second-level control resource of the receiving end, or corresponding to the second-level control resource of the receiving end The index value is allowed to start, and/or the number of the receiving end indicated or implied by the transmitting end in the control group used by the receiving end is used, and the number is used to determine the second level control resource of the receiving end within the resource range controlled by the second level. The number has a corresponding relationship with the index value, and the number implies the index value and/or the starting index value corresponding to the second-level control resource of the receiving end, and/or allows the index value to be started, or the number is used as the index value to directly indicate the second-level control of the receiving end. The resource, where the correspondence includes a one-to-one relationship between the number and the index value, or a one-to-many relationship between the number and the index value, or a relationship between the number and the index value, or the number and the index value correspond to the specified offset.

In this embodiment, the second-level downlink control resource may be defined in the following manners:

Starting from the initial index value, according to the number of control units pre-agreed with the receiving end, the control unit corresponding to one or more consecutive index values is the second-level downlink control resource of the receiving end;

Or, starting from the control unit corresponding to the initial index value, determining, according to the number of control units corresponding to the transmission requirement of the second level control, determining that the consecutive one or more control units are the second-level downlink control resources of the receiving end;

The receiving end obtains the location range of the second-level control resource corresponding to the receiving end by using a predetermined agreement, and may include, for example:

The receiving end estimates the second-level control resource location within the resource range controlled by the receiving end according to its own identity ID or C-RNTI or starts the search starting position.

The receiving end using the same control group in this embodiment has the same first level control information in the resources controlled by the first level, and/or scrambles the first level control information using the same radio network temporary identifier RNTI; using the same The receiving end of the control group is at least one, and the second level of the receiving end is controlled within the range of the same second level control resource.

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

In this embodiment, the receiving end obtains the location range of the second-level control resource corresponding to the receiving end according to the received signaling, for example, may include: obtaining, by using the first-level control or the high-layer signaling, the receiving in the control group or using the same control group. The second level of control of the end allows the minimum and/or maximum degree of aggregation to be used; or, the first level of control or higher layer signaling is used to know the degree of aggregation used by the second level of control within the control group or by the receiving end of the same control group.

The receiving end obtains the location range of the second-level control resource corresponding to the receiving end according to the received signaling, and further includes: obtaining, by using the first-level control or the high-layer signaling, the degree of aggregation used by the second-level control of the receiving end.

The time domain and/or the frequency domain resource in the range of the location where the receiving end knows the second-level control resource is divided into one or more control units, for example, may include: passing the first-level control signaling or the high-level letter. Let us know the subband or PRB set of system bandwidth partitioning, where the PRBs in one PRB set are continuous or discrete.

The receiving end can obtain the control group used by the receiving end according to the received signaling and/or the receiving end, and the receiving end can include, for example, obtaining the control group used by the receiving end by using high layer signaling or physical layer signaling. The number, or the receiving end determines the control group used by the receiving end according to its own ID or C-RNTI.

The method for determining the location of the downlink control resource and the method for determining the location of the downlink control resource provided by the present disclosure are respectively described above, and the foregoing first embodiment and the second embodiment respectively include various optional embodiments. The various interactions between the sender and the receiver are described below through different embodiments.

Third embodiment

The transmitting end (for example, the base station, the same below) configures the control group information for the UE by using high layer signaling, for example, using a UE-specific RRC message. For example, UE0, UE1, and UE2 are configured in the same control group. The sender also carries the number of each UE in the control group in the high-level signaling, for example, the UE0 number is 0, the UE1 number is 1, and the UE2 number is 2.

The transmitting end sends signaling indications (which may be the same signaling) to UE0, UE1, and UE2 through the first-level control, and the second-level control resources of these UEs control the location range of the resources. For example, the second-level control resource location range is in the PRB labeled 10 to 21 (here may be the logical label of the PRB, and the actual physical resources are not necessarily continuous, and may be actual physical resource labels). That is to say, UE0, UE1 and UE2 are regarded as one control group, and the resource positions controlled by the second level of them are only in the 12 PRBs in the above range, thus greatly reducing the search range of the UE receiving the second level control. .

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 four PRBs. The time domain of the downlink control is in accordance with the OFDM symbol, for example, one downlink control occupies the first or first two symbols of the time slot. When the UE learns the PRB where its downlink control is located, the UE can learn the downlink control mapping.

The transmitting end and the receiving end agree to divide the above 12 PRBs into 12 control units (in accordance with the PRB label, the control unit is 0 to 11 in turn), each control unit corresponds to one PRB in the frequency domain, and the time domain corresponds to 2 symbols (here Assume 2 symbols). The sender and the receiver agree that each of the four control units corresponds to an index value. For example, control units 0 to 3 are configured with index value 0, control units 4 to 7 are configured with index value 1, and control units 8 to 11 are configured with index value 2.

The sender and the receiver agree that the number of the UE in the control group is used as an index value, and the control unit corresponding to the index value is the resource location controlled by the second level of the UE. In this way, UE0, UE1, and UE2 can uniquely determine the resource location of their second-level control according to the number in the control group.

Fourth embodiment

The transmitting end configures the information of the control group for the UE by using high layer signaling, for example, using a UE-specific RRC message. For example, UE0, UE1, and UE2 are configured in the same control group. The sender simultaneously carries the number of each UE in the control group in the high layer signaling. For example, the UE0 number is 0, the UE1 number is 1, and the UE2 number is 2.

The transmitting end controls UE1 through UE1, and UE1 and UE2 send signaling indications (which may be the same signaling) to the location range of their second-level control resources. For example, the second-level control resource location ranges from the PRBs labeled 10 to 21 (here may be PRB logical labels, and the actual physical resources are not necessarily continuous, and may be actual physical resource labels). That is to say, UE0, UE1 and UE2 are used as one control group, and their second-level controlled resource locations are only in 12 PRBs within the location range of the second-level control resources, thus greatly reducing UE reception. The search scope of the second level control.

The transmitting end and the receiving end agree to divide the above 12 PRBs into 12 control units (in accordance with the PRB label, the control unit is 0 to 11 in turn), each control unit corresponds to one PRB in the frequency domain, and the time domain corresponds to 2 symbols (here Assume that it is 2 symbols). The sender and the receiver agree that each of the four control units corresponds to an index value. For example, control unit 0, 3, 6, 9 configures index value 0, control unit 1, 4, 7, 10 configures index value 1, and control unit 2, 5, 8, 11 configures index value 2.

The sender and the receiver agree that the number of the UE in the control group is used as the index value, and the control unit corresponding to the index value is the resource location controlled by the second level of the UE. In this way, UE0, UE1, and UE2 can uniquely determine the resource location of their second-level control according to the number in the control group.

Fifth embodiment

The transmitting end controls UE1 through UE1, and UE1 and UE2 send signaling indications (which may be the same signaling) to the location range of their second-level control resources. For example, the second-level control resource location range is in the PRB labeled 10 to 21 (here may be a PRB logical label, and the actual physical resources are not necessarily continuous, and may be actual physical resource labels). That is to say, UE0, UE1, and UE2 are a control group, and their second-level controlled resource locations are only in the 12 PRBs in the above range, thus greatly reducing the retrieval range in which they receive the second-level control. .

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 (the degree of aggregation of the corresponding control information). The time domain of the downlink control is in accordance with the OFDM symbol, for example, one downlink control occupies the first or first two symbols of the time slot. When the UE learns the PRB where its downlink control is located, the UE can learn the downlink control mapping.

The transmitting end and the receiving end agree to divide the above 12 PRBs into 12 control units (in accordance with the PRB label, the control unit is 0 to 11 in turn), each control unit corresponds to one PRB in the frequency domain, and the time domain corresponds to 2 symbols ( This is assumed to be 2 symbols). The sender and the receiver agree that each 2 control units correspond to an index value. For example, control unit 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, and control units 8 to 9 configure index value. 4. The control units 10 to 11 configure an index value of 5.

The sender and the receiver agree that the number of the UE in the control group is used as the index value, and the control unit corresponding to the index value is the start of the resource position controlled by the second level of the UE. The transmitting end allows to determine the number of control units required for the second level of control of the UE to be actually transmitted according to requirements (eg, channel quality conditions, 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. It can also be understood that the more control units are used, the higher the degree of aggregation of control information is used, and the higher the reliability, generally the control information can be specified. The number of degrees of polymerization used, and different degrees of aggregation correspond to control resources that require different data. The transmitting end may send the aggregation degree information or the information having the same function as the aggregation degree information to the receiving end. The sender may also not send such information, and the receiver needs to perform blind detection according to different aggregation levels.

The transmitting end and the receiving end stipulate that the index corresponding to the start of the resource location controlled by the second level occupies a consecutive one, two or four index values (including the starting index value) corresponding to the control unit. The sender and the receiver agree that the index corresponding to the number is the starting index value of the control unit controlled by the second level of the UE.

The UE 0 whose number is 0 in the control group sends the second level control using the control unit corresponding to the index value 0. The transmitting end is the UE1 numbered 1 in the control group, and the second level control is sent by using the control unit corresponding to the index value 1. The UE 2 whose number is 2 in the control group uses the index value 2 as the starting index value, and uses the control unit corresponding to the index values 2 and 3 to send the second level control.

The receiving end needs to start the second-level control information of the blind receiving end itself according to the index value corresponding to the number. The blind end of the receiving end can be performed according to the degree of polymerization. For example, UE0 first blindly searches the control unit corresponding to the index 0 according to the first degree of aggregation, and assuming that the channel quality is good, UE0 will detect its own second level control information. The UE1 firstly performs the blind retrieval of the control unit corresponding to the index 1 according to the first degree of polymerization, and the UE1 also detects its own second-level control information. The UE2 firstly performs the blind search for the control unit corresponding to the index 2 according to the first degree of aggregation, and the UE2 does not detect its own second-level control information, and then the UE2 selects the control unit corresponding to the index value 2 and the index value 3 according to the second degree of polymerization. Assuming that the channel quality is good, UE2 will also detect its own second-level control information.

This method allows the transmitting end to adjust the amount of resources of the second-level control information as needed, thereby improving reliability. However, the third embodiment and the fourth-level control information in the fourth embodiment use a fixed amount of resources. The manner provided by the example increases the blind detection complexity of the UE.

Sixth embodiment

The transmitting end configures the control group for the UE by using high layer signaling, for example, using a UE-specific RRC message. For example, UE0, UE1, and UE2 are configured in the same control group. The sender also carries the number of each UE in the control group in the high-level signaling, for example, the UE0 number is 0, the UE1 number is 1, and the UE2 number is 2.

The transmitting end controls UE1 through UE1, and UE1 and UE2 send signaling indications (which may be the same signaling) to the location range of their second-level control resources. For example, the location range indicating the second-level control resource is in the PRB labeled 10-21 (note that the PRB logical label may be used here, and the actual physical resource may not be continuous, or may be the actual physical resource label). That is to say, UE0, UE1, and UE2 are a control group, and their second-level controlled resource locations are only in the 12 PRBs in the above range, thus greatly reducing the retrieval range in which they receive the second-level control. .

The sender and the receiver agree that the number of the UE in the control group is an index value that allows the start. The index value corresponding to the resource location of the second level control of the UE is after allowing the index value to be started (including itself). That is to say, the UE does not need to detect its own second-level control in the resource corresponding to the index value before the start of the index value, so that the detection range of the UE can also be reduced. The transmitting end allows to determine the number of control units when the second level of the UE is actually transmitted according to requirements (eg, channel quality conditions, 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. It can also be understood that the more control units are used, the higher the degree of aggregation of control information is used, and the higher the reliability, generally the control information can be specified. The number of degrees of polymerization used, and different degrees of aggregation correspond to control resources that require different data.

The transmitting end may send the aggregation degree information or the information having the same function as the aggregation degree information to the receiving end. The sender may also not send such information, and the receiver needs to perform blind detection according to different aggregation levels.

The sender and the receiver agree that the index value corresponding to the number in the control group is used as the allowable start index value, and the control unit corresponding to one, two or four index values (including the start index value) is occupied. The sender and the receiver agree that the index corresponding to the number is the allowable start index value of the control unit of the second level control of the UE.

The UE 0 whose number is 0 in the control group sends the second level control using the control unit corresponding to the index value 0. The transmitting end uses the index value 1 for the UE1 numbered 1 in the control group, and the control unit corresponding to the second unit sends the second level control. The sender 2 uses the index value 2 as the allowable start index value for the UE 2 in the control group number 2, but the index value 2 is occupied by the second level control of the UE1 at this time, and the sender uses the index value 3 and 4 after the index value 2 at this time. The corresponding control unit transmits the second level control of UE2.

The receiving end needs to blindly check its own second-level control information from the start of the index value (including itself) (that is, the receiving end does not need to detect the control unit before allowing the index value to be started). The blind end of the receiving end can be performed according to the degree of polymerization. For example, UE0 first blindly searches for the control unit corresponding to the index 0 according to the first degree of polymerization, and UE0 will detect its own second level control information. UE1 firstly performs blind search for the control units corresponding to the index 1, 2, 3, 4, and 5 according to the first degree of polymerization, and UE1 fails the detection, and UE1 blindly searches for the values 1 and 2, respectively according to the second degree of polymerization. The control unit corresponding to 3, 3 and 4, 4 and 5, at this time UE1 will detect its own second-level control information in the control units of index values 1 and 2. UE2 firstly performs blind search for the control units corresponding to the index 2, 3, 4, and 5 according to the first degree of polymerization, UE2 will detect the failure, and UE2 blindly searches for the values 2 and 3, 3, and 4 according to the second degree of polymerization. , 4 and 5 corresponding control units, UE2 will detect its own second level of control information in the control unit with index values of 3 and 4. UE2 does not need to detect the control unit with an index value of 0, 1, and also reduces the blind detection range.

Seventh embodiment

The base station divides the system bandwidth into several sub-bands or divides into several PRB sets. When dividing, the PRBs in each PRB set may be continuous or discrete. The base station notifies the receiving end of the divided subband or the divided PRB sets to the receiving end, so that the receiving end knows the range of each subband or the range of each PRB set, or only informs the range of the PRB set associated with the receiving end or The range of subbands.

The base station allocates the receiving end to a certain control group through signaling, or the receiving end is divided into a certain control group according to some agreed rules. For example, the receiving end derives its own control group according to its own C-RNTI or ID. Optionally, the base station may assign a number to the control group used by the receiving end. The base station then divides each subband (or PRB set, described below in subbands, the PRB set is similar) into several control units, and one (or more) control units carry the second level control information of one UE. And configure the index value for the control unit.

For example, the index value can be configured for the control unit in the following two ways:

Manner 1: The base station indicates or implies the subband or PRB set of the control group (ie, the resource location range of the control group) for the control group, and then sends the control information of the UE in the control group in the subband 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 subband where the control group is located (here, it is assumed that one control unit carries control information of one receiving end, and when multiple control units carry control of one receiving end) When the information is used, the index value corresponding to the number is used as the initial control unit of the UE control information. The base station sends control information of the receiving end in a control unit corresponding to each receiving end, and the receiving end receives its own control information in the corresponding control unit.

Manner 2: The base station indicates or implies the subband or PRB set of the control group (ie, the resource location range of the control group) for the control group, and then sends the control information of the UE in the control group in the subband or PRB set. The base station and the receiver agree that the receiving end derives the initial control unit of the control information in its own subband according to its own C-RNTI. The transmitting end also sends the control information of the receiving end in the corresponding control unit according to the same rule.

In all the foregoing embodiments, the base station can dynamically reconfigure the subband or PRB set of the control group, so that the resources sent by the control signaling can be adjusted according to the average channel quality of the receiving end in the control group. The base station can also dynamically reconfigure the control group where a receiver is located. For example, the base station can always divide the receiving ends with similar channel qualities into the same control group, so that a relatively consistent degree of aggregation can be configured to transmit control information, thereby simplifying the complexity of the receiving end to retrieve control information.

Eighth embodiment

In the third to seventh embodiments of the embodiment, the transmitting end can notify the receiving end of the degree of aggregation used by the second-level control, for example, the transmitting end passes the first-level control or the high-level signaling (the high-level signaling included in the description includes The UE-specific RRC message, or the UE group RRC message) informs the UE of the degree of aggregation of the second-level control. The UE performs the second level control detection in the second level control resource location according to the degree of aggregation. This avoids the UE attempting blind detection according to different aggregation degrees, thereby reducing the complexity of the UE.

Or, in the third to seventh embodiments, the sending end configures the control group for the UE by using the first level control or the high layer signaling, and configures the degree of aggregation corresponding to the second level control of the UE in the control group. In this way, the transmitting end always uses the corresponding aggregation degree to send the second level control of the UE in the control group, and the UE also always detects its own second level control in the control group according to the corresponding degree of aggregation. This avoids the UE attempting blind detection according to different aggregation degrees, thereby reducing the complexity of the UE.

Or, in the third to seventh embodiments, the transmitting end configures the control group for the UE by using the first level control or the high layer signaling, and configures the maximum and/or minimum allowed for the second level control of the UE in the control group. Degree of polymerization. In this way, the transmitting end always uses the degree of aggregation in the corresponding range to send 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 degree of aggregation in the corresponding range. This reduces the number of aggregation levels that the UE needs to blindly check to a certain extent, thereby reducing the complexity of the UE.

Ninth embodiment

The present embodiment provides a device for indicating the location of a downlink control resource. The device is disposed at a transmitting end, such as a base station. FIG. 3 is a structural block diagram of the device. As shown in FIG. 3, the device 30 includes the following components:

The indication module 31 is configured to indicate by a signaling and/or to imply a location range of the second level control resource; to indicate and/or to imply a control group used by the receiving end, the transmitting end in combination with the control group indication and/or the second end of the implicit receiving end Level control resources.

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

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

The foregoing signaling may include, for example, first level control or higher layer signaling.

The location range of the second-level control resource includes the location of the time domain resource and/or the frequency domain resource, where the location of the frequency domain resource is 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 one or more locations; the location of the time domain resource includes: the location and the number of symbols of the time domain resource symbol pre-agreed with the receiving end; or indicating the symbol to the receiving end through high layer signaling or physical layer signaling The quantity, the symbol position is pre-agreed with the receiving end; or the location of the symbol is indicated to the receiving end by high layer signaling or physical layer signaling, and the number of symbols is pre-agreed with the receiving end; wherein, the pre-agreed time-frequency resource symbol The number is one or two, and the pre-agreed position is the first or first two symbols in the scheduling unit.

Optionally, the foregoing indication module 31 is further configured to: indicate, by the first level control or the high layer signaling, an index value corresponding to the second level control resource of the receiving end, or a starting index value corresponding to the second level control resource of the receiving end Or the allowable start index value corresponding to the second-level control resource of the receiving end; and/or, indicating or implied the number of the receiving end in the control group used by the receiving end, the number is used to determine the resource controlled by the receiving end at the second level a second-level control resource in the range; and/or a correspondence between the number and the index value, the number corresponding to the index value corresponding to the second-level control resource of the receiving end, and the number corresponding to the second-level control resource of the receiving end The initial index value indicates the allowable start index value corresponding to the second-level control resource of the receiving end by the number, or directly indicates the second-level control resource of the receiving end by using the number as the index value, wherein the correspondence relationship includes the number and the index value one-to-one correspondence Relationship, or a one-to-many relationship between the number and the index value, or a many-to-one relationship between the number and the index value, or the number and index value according to Specify the offset corresponding.

The indication module 31 provided in this embodiment may indicate/implicit the second-level downlink control resource, for example, in the following manners:

Or starting from the control unit corresponding to the initial index value, according to the number of control units agreed in advance with the receiving end, one or more control units discrete in the agreed pattern are the second-level downlink control resources of the receiving end;

The foregoing allowable start index value refers to that the second-level control resource of the receiving end is at a control unit corresponding to the index value that is allowed to start, or after the control unit corresponding to the index value that is allowed to start, or the start index value is allowed to receive. The second-level control resource of the terminal does not precede the control unit corresponding to the index value that allows the start, or the start index value refers to the index value corresponding to the second-level control resource of the receiving end, where the index value is allowed to start, or After allowing the start of the index value, or allowing the start of the index value means that the index value corresponding to the second-level control resource of the receiving end is not before the index value that allows the start.

In this embodiment, the receiving end using the same control group has the same first level control information in the resources controlled by the first level, and/or scrambles the first level control information using the same wireless network temporary identifier RNTI; The number of receiving ends of the same control group is at least one, and the second level of the receiving end is controlled within the range of the same second-level control resource.

The indication module 31 is further configured to: indicate, by using the first level control or the high layer signaling, the second level of the control group in the control group or using the same control group to control the minimum and/or maximum degree of aggregation allowed; or, through the first level Control or higher layer signaling, indicating the degree of aggregation used by the second level control in the control group or using the receiving end of the same control group, or indicating the aggregation used by the second level control of one receiving end through the first level control or higher layer signaling degree.

The foregoing indication module 31 is configured to: divide the system bandwidth into multiple sub-bands or multiple physical resource block PRB sets, and send the system bandwidth partitioned sub-band or PRB set to the receiving end by using the first-level control signaling or the high-layer signaling, where The PRBs in a PRB set are continuous or discrete.

The above-mentioned indication module 31 may be configured to: assign the receiving end to a control group, and assign the number in the control group used by the receiving end to the receiving end through high-level signaling or physical layer signaling indication or by an implicit inference manner, where The implicit inference method includes the receiving end determining the control group used by the receiving end according to its own ID or C-RNTI.

The foregoing indication module 31 may be configured to divide the control unit according to the physical resource block PRB, REG, CCE or RE as a basic unit, and one or more control units carry a second level control.

The foregoing indication module 31 may be configured to: the transmitting end allocates a corresponding range of the second-level control resource to the control group by using the downlink control information DCI in the first-level control; or when the resource range controlled by the second-level is composed of the PRB The transmitting end describes the PRB corresponding to the location range of the second-level control resource by using the resource allocation information in the DCI in the first-level control.

Tenth embodiment

The embodiment provides a downlink control resource location determining apparatus, and the apparatus should be configured as a receiving end. FIG. 4 is a structural block diagram of the apparatus. As shown in FIG. 4, the apparatus 40 may include the following components:

The obtaining module 41 is configured to learn the location range of the second-level control resource corresponding to the receiving end according to the received signaling or by a predetermined agreement; the receiving end learns the receiving end according to the received signaling and/or the receiving end through a pre-agreed agreement. The control group used, the receiving end and the control group know their own second-level control resources.

The foregoing signaling may include, for example, first level control, physical layer or higher layer signaling.

Optionally, the foregoing learning module 41 may be further configured to: the receiving end obtains the time domain and/or the frequency domain resource within the location range of the second-level control resource according to the pre-agreed, and is divided into one or more control units, where Or multiple control units correspond to one index value.

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

The above-mentioned learning module may be configured to: obtain an index value corresponding to the first-level control or the high-level signaling indication or the implicit second-level control resource of the receiving end, or a starting index value corresponding to the second-level control resource of the receiving end, or the receiving end The allowable start index value corresponding to the second level control resource, and/or the number of the receiving end indicated or implied by the transmitting end in the control group used by the sending end, and the number is used to determine the resource range controlled by the receiving end at the second level. The second level of control resources; the number has a corresponding relationship with the index value, the number implies the index value and/or the starting 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. Directly indicating the second-level control resource of the receiving end, where the correspondence relationship includes a one-to-one relationship between the number and the index value, or a one-to-many relationship between the number and the index value, or a relationship between the number and the index value, or the number and The index value corresponds to the specified offset.

The learning module may be configured to: according to the identity identifier of the receiving end itself or the C-RNTI, estimate the second-level control resource location of the receiving end within the resource range controlled by the second-level or start the search starting position.

For example, the second-level downlink control resources learned by the learning module may exist in the following situations:

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

In this embodiment, the receiving end using the same control group has the same first-level control information in the resources controlled by the first level, and/or scrambles the first-level control information by using the same radio network temporary identifier RNTI; The receiving end using the same control group is at least one, and the second level of the receiving end is controlled within the same second-level control resource; the receiving end using the same control group has the same first in the first-level controlled resource Level control information, and/or scrambling the first level of control information using the same radio network temporary identifier RNTI; the number of receiving ends using the same control group is at least one, and the second level of the receiving end controls the same second level of control resources The location of the location.

The foregoing learning module 41 may further be configured to: learn, by using the first level control or the high layer signaling, the minimum and/or maximum degree of aggregation allowed in the control group or using the second level of the receiving end of the same control group; or, by using the first The level control or higher layer signaling learns the degree of aggregation used in the control group or the second level of control using the receiver of the same control group, or obtains the degree of aggregation used by the second level control of a receiver through the first level control or higher layer signaling. .

The foregoing learning module 41 may be further configured to: learn the subband or PRB set of the system bandwidth division by using the first level control signaling or the high layer signaling, where the PRBs in one PRB set are continuous or discrete.

The learning module 41 may be configured to: obtain the number in the control group used by the receiving end by using high layer signaling or physical layer signaling, or determine whether the receiving end uses the control group according to its ID or C-RNTI. .

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

The learning module 41 may be configured to: obtain, by using the downlink control information DCI in the first-level control, a location range of the second-level control resource allocated to the control group; or, when the resource range controlled by the second-level is composed of the PRB, The PRB corresponding to the resource range controlled by the second level is learned by the resource allocation information in the DCI in the first level control.

Eleventh embodiment

Embodiments of the present disclosure also relate to a computer program, a storage medium (memory) storing the program or a set of sequences, and a base station device (sender device).

The program is set to implement the foregoing method for indicating the location of the downlink control resource, including:

The location range of the second level control resource is indicated by signaling and/or implied; and the control group used by the receiving end is indicated and/or implied, and the transmitting end in combination with the control group indicates and/or implies the second level of control resources of the receiving end.

The storage medium (memory) is mainly used for storing the above program. Therefore, the program in the storage medium is not described in detail in the embodiment; and the storage medium can store the above program.

The method for indicating the location of the downlink control resource may be implemented by the base station device. As shown in FIG. 5, base station apparatus 50 may include one or more (only one shown) processor 52, (processor 52 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA. A memory 54 for storing data, and a data transceiver 56 for communication functions. It will be understood by those skilled in the art that the structure shown in FIG. 5 is merely illustrative, and does not impose a single limitation on the structure of the above base station. For example, the base station device 50 may further include more or less components than those shown in FIG. 5 or have a configuration different from that shown in FIG. 5 by splitting or merging the above functions.

The memory 54 can be used to store the software program of the application software and the module. The program instruction/module corresponding to the indication method of the downlink control resource location disclosed in the foregoing embodiment can be stored in the memory 54, and the indication method of the downlink control resource location is before. The embodiment has been described in detail, and thus the embodiment will not be repeated in detail.

The processor 52 executes various functional applications and data processing by running software programs and modules stored in the memory 54, i.e., implementing the above methods. 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, memory 54 may include memory (cloud memory) remotely located relative to processor 52, which may be connected to mobile terminal 50 over a network. 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 for receiving or transmitting data via a network. The above 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 Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet. In one example, the transmission device 56 can be a Radio Frequency (RF) module for communicating with the Internet wirelessly.

Twelfth embodiment

Embodiments of the present disclosure also relate to a computer program, a storage medium storing the program or a set of sequences, and a sink device (terminal device).

The method for determining the location of the downlink control resource provided in the foregoing embodiment includes:

Receiving the location range of the second-level control resource corresponding to the receiving end according to the received signaling and/or the pre-agreed; receiving the control group used by the receiving end according to the received signaling and/or the receiving end, and receiving The end combines the control group to indicate and/or implies its own second level of control resources.

The storage medium is mainly used for storing the above program. Therefore, the program in the storage medium is not described in detail in this embodiment; and the storage medium can store the above program.

The technical solution of the method for determining the location of the downlink control resource disclosed in the foregoing embodiment may be implemented by the receiving end (terminal device). The terminal may be a mobile terminal (a device having a processing function such as a mobile phone or a tablet), or may be a computer terminal or the like. The embodiment is described as an example of operating on a mobile terminal. FIG. 6 is a schematic diagram of a hardware structure of a mobile terminal for implementing a method for determining a location of a downlink control resource according to an embodiment of the present disclosure. As shown in FIG. 6, terminal device 60 may include one or more (only one shown) processor 62 (processor 62 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA). A memory 64 for storing data, and a data transceiver 66 for communication functions. It will be understood by those skilled in the art that the structure shown in FIG. 6 is merely illustrative, and does not impose a single limitation on the structure of the above base station. For example, the base station device 60 may further include more or less components than those shown in FIG. 6 or may have a configuration different from that shown in FIG. 6 by splitting or merging the above functions.

The memory 64 can be used to store the software program of the application software and the module. The program instruction/module corresponding to the method for determining the location of the downlink control resource disclosed in the foregoing embodiment can be stored in the memory 64, and the method for determining the location of the downlink control resource is before. The embodiment has been described in detail, and thus the embodiment will not be repeated in detail.

The processor 62 executes various functional applications and data processing by running software programs and modules stored in the memory 64, i.e., implementing the above methods. 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, memory 64 may include memory (cloud memory) remotely located relative to processor 62, which may be connected to mobile terminal 60 over a network. The above networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

The data transceiver 66 is for receiving or transmitting data via a network. The network described above may include a wireless network provided by a communication provider of the mobile terminal 60. In one example, the transmission device 66 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet. In one example, the transmission device 66 can be a Radio Frequency (RF) module for communicating with the Internet wirelessly.

While the preferred embodiment of the present disclosure has been disclosed for purposes of illustration, those skilled in the art will recognize that various modifications, additions and substitutions are possible, and the scope of the present disclosure should not be limited to the embodiments described above.

Industrial applicability

In the solution provided by the embodiment of the present disclosure, the sender indicates and/or implies the resource location range of the second-level control, and the division status of the range, and at the same time, the sender indicates and/or implies the control group used by the receiver, and reduces The complexity of the second-level downlink control of the blind detection at the receiving end.

Claims

A method for indicating a location of a downlink control resource includes:

The transmitting end indicates by signaling and/or implies a range of locations of the second-level control resources;

The transmitting end indicates and/or implies a control group used by the receiving end, and the transmitting end instructs and/or implies the second level control resource of the receiving end in combination with the control group.
The method of claim 1 further comprising:

The transmitting end divides the time domain and/or the frequency domain resource in the location range of the second-level control resource into one or more control units, and the one or more control units correspond to one index value.
The method of claim 2 further comprising:

The index value corresponding to the second-level control resource of the receiving end is indicated by the first-level control or the high-level signaling, or the initial index value corresponding to the second-level control resource of the receiving end, or the corresponding corresponding to the second-level control resource of the receiving end Start index value.
The method of claim 2 further comprising:

Indicates or implies the number of the receiving end within the control group it uses, which is used to determine the second level of control resources of the receiving end within the resource range controlled by the second level.
The method of claim 2 further comprising:

Corresponding relationship between the number and the index value, where the number implies an index value corresponding to the second-level control resource of the receiving end, and the number implies a starting index value corresponding to the second-level control resource of the receiving end, The number implies the allowable start index value corresponding to the second-level control resource of the receiving end, or the number is used as the index value to directly indicate the second-level control resource of the receiving end.
The method according to claim 2, wherein the correspondence includes a one-to-one relationship between the number and the index value, or a relationship between the number and the index value, or a plurality of the number and the index value. A relationship, or the number and index value correspond to a specified offset.
The method according to claim 3, wherein the transmitting end in combination with the control group indicates and/or implies the second level control resource of the receiving end, including:

Starting from the starting index value, according to the number of control units pre-agreed with the receiving end, the control unit corresponding to one or more consecutive index values is the second-level downlink control resource of the receiving end;

Or, starting from the starting index value, according to the number of control units pre-agreed with the receiving end, the control unit corresponding to one or more index values discrete in the agreed pattern is the second-level downlink control resource of the receiving end;

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

Or, starting from the control unit corresponding to the initial index value, one or more control units discrete in the agreed pattern are the second-level downlink control resources of the receiving end according to the number of control units agreed in advance with the receiving end.
The method according to claim 3, wherein the transmitting end in combination with the control group indicates and/or implies the second level of control resources of the receiving end, including:

Starting from the starting index value, determining, according to the number of control units corresponding to the transmission requirement of the second-level control, determining that the control unit corresponding to one or more consecutive index values is the second-level control resource of the receiving end;

Or starting from the starting index value, according to the number of control units corresponding to the transmission requirement of the second level control, the control unit corresponding to one or more index values discrete according to the agreed pattern is the second level control resource of the receiving end ;

Or, starting from the control unit corresponding to the start index value, determining, according to the number of control units corresponding to the transmission requirement of the second level control, determining that the consecutive one or more control units are the second-level downlink control resources of the receiving end ;

Or starting from the control unit corresponding to the start index value, according to the number of control units corresponding to the transmission requirement of the second level control, one or more control units discrete according to the agreed pattern are the second level control resources of the receiving end .
The method according to claim 3, wherein said allowable start index value means that the second-level control resource of the receiving end is at a control unit corresponding to the index value allowing the start, or after the control unit corresponding to the index value allowing the start Or, the allow start index value means that the second-level control resource of the receiving end does not precede the control unit corresponding to the index value that is allowed to start.
The method according to claim 3, wherein the allowable start index value refers to an index value corresponding to the second-level control resource of the receiving end, where the index value is allowed to start, or after the index value that allows the start, or The allowable start index value means that the index value corresponding to the second-level control resource of the receiving end does not precede the index value of the allowable start.
The method of claim 1 wherein the receiving end using the same control group has the same first level of control information within the resources of the first level of control and/or is scrambled using the same radio network temporary identity RNTI The first level control information;

The number of receiving ends using the same control group is at least one, and the second level of the receiving end is controlled within a range of positions of the same second-level control resource.
The method of claim 2 further comprising:

Determining, by first level control or higher layer signaling, a minimum level and/or a maximum degree of aggregation allowed within the control group or using a second stage of the receiving end of the same control group;

Or, by using the first level control or the high layer signaling, indicating the degree of aggregation used in the control group or using the second level of the receiving end of the same control group.
The method of claim 2 further comprising:

The degree of aggregation used by the second level control of a receiving end is indicated by the first level control or the higher layer signaling.
The method of claim 2 further comprising:

Dividing the system bandwidth into multiple sub-bands or multiple physical resource block PRB sets;

The sub-band or PRB set of the system bandwidth partition is sent to the receiving end by using the first-level control signaling or the high-level signaling, where the PRBs in the one PRB set are continuous or discrete.
The method of claim 2 further comprising:

Assigning the receiving end to a control group, assigning the number in the control group used by the receiving end to the receiving end through high layer signaling or physical layer signaling indication or by implicit inference means, wherein the implicit The inferred manner includes the receiving end determining the control group used by the receiving end according to its own ID or C-RNTI.
The method according to claim 2, wherein dividing the time domain and/or frequency domain resources within the location range of the second level control resource into one or more control units comprises:

The control unit is divided according to the physical resource block PRB, REG, CCE or RE, and one or more control units carry a second level control.
The method according to claim 1, wherein the transmitting end indicates by signaling and/or implies a range of locations of the second-level control resources, including:

The transmitting end allocates a location range of the corresponding second-level control resource to the control group by using the downlink control information DCI in the first-level control;

Or, when the location range of the second-level control resource is configured by the PRB, the sending end describes the PRB corresponding to the location range of the second-level control resource by using the resource allocation information in the DCI in the first-level control.
The method of claim 1, wherein the signaling indication comprises:

Indicated by first level control or higher layer signaling.
The method according to claim 1, wherein the location range of the second level control resource comprises a location of a time domain resource and/or a frequency domain resource, and the location of the frequency domain resource is a subband or a physical resource block PRB, a location at which one or more of the resource element group REG, the control channel element RE, or the resource element is located;

The location of the time domain resource includes:

The number of positions and symbols of the time domain resource symbols pre-agreed with the receiving end;

Or indicating the number of symbols to the receiving end through high layer signaling or physical layer signaling, where the symbol position is pre-agreed with the receiving end;

Or indicating the location of the symbol to the receiving end by using high layer signaling or physical layer signaling, where the number of symbols is pre-agreed with the receiving end;

Or by signaling or pre-arranging the scheduling unit where the time domain resource is located.
The method according to claim 19, wherein the number of the pre-agreed time-frequency resource symbols is one or two, and the position of the pre-agreed time domain resource symbols is the first or the first two of the scheduling unit. symbol.
The method according to any one of claims 1 to 20, wherein the resource controlled by the second level comprises at least a second level control resource of a receiving end.
A method for determining a location of a downlink control resource includes:

Receiving, by the receiving end, the location range of the second-level control resource corresponding to the receiving end according to the received signaling and/or by a predetermined agreement;

The receiving end learns the control group used by the receiving end according to the received signaling and/or by a predetermined agreement, and the receiving end learns its own second-level control resource in combination with the control group.
The method of claim 22 further comprising:

The time domain and/or the frequency domain resource within the location range of the receiving end that knows the second-level control resource according to the pre-provision is divided into one or more control units, and the one or more control units correspond to one index value. .
The method of claim 23, further comprising:

Obtaining an index value corresponding to the second-level control resource of the receiving end indicated by the first-level control or the high-level signaling, or a starting index value corresponding to the second-level control resource of the receiving end, or a second-level control resource of the receiving end The corresponding allowable start index value.
The method of claim 23, further comprising:

Obtaining the number of the receiving end indicated or implied by the transmitting end in the control group used by the transmitting end, and the number is set to determine the second level control resource of the receiving end within the resource range controlled by the second level.
The method of claim 23, further comprising:

The receiving end estimates, according to its own identity ID or C-RNTI, the second-level control resource location of the receiving end within the resource range controlled by the second-level or starts the search starting position.
The method of claim 23, wherein

The number has a corresponding relationship with the index value, and the number implies an index value and/or a start index value corresponding to the second-level control resource of the receiving end, and/or an index value is allowed to start, or the number is directly indicated as an index value. The second level of control resources at the receiving end.
The method according to claim 23, wherein the correspondence relationship comprises a relationship in which the number is in one-to-one correspondence with an index value, or a relationship in which the number is one-to-many with an index value, or a plurality of pairs of the number and the index value. A relationship, or the number and index value correspond to a specified offset.
The method according to claim 27, wherein, starting from said starting index value, according to the number of control units pre-agreed with the receiving end, the control unit corresponding to one or more consecutive index values is the number of said receiving end Secondary downlink control resources;

Or, starting from the starting index value, according to the number of control units pre-agreed with the receiving end, the control unit corresponding to one or more index values discrete in the agreed pattern is the second-level downlink control resource of the receiving end;

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

Or, starting from the control unit corresponding to the initial index value, one or more control units discrete in the agreed pattern are the second-level downlink control resources of the receiving end according to the number of control units agreed in advance with the receiving end.
The method of claim 27, wherein

Starting from the starting index value, determining, according to the number of control units corresponding to the transmission requirement of the second-level control, determining that the control unit corresponding to one or more consecutive index values is the second-level control resource of the receiving end;

Or starting from the starting index value, according to the number of control units corresponding to the transmission requirement of the second level control, the control unit corresponding to one or more index values discrete according to the agreed pattern is the second level control resource of the receiving end ;

Or, starting from the control unit corresponding to the start index value, determining, according to the number of control units corresponding to the transmission requirement of the second level control, determining that the quantity consecutive one or more control units are the second level downlink control resources of the receiving end ;

Or starting from the control unit corresponding to the start index value, according to the number of control units corresponding to the transmission requirement of the second level control, one or more control units discrete according to the agreed pattern are the second level control resources of the receiving end .
The method according to claim 27, wherein said allowable start index value means that the second-level control resource of the receiving end is at a control unit corresponding to the index value allowing the start, or after the control unit corresponding to the index value allowing the start Or, the allow start index value means that the second-level control resource of the receiving end does not precede the control unit corresponding to the index value that is allowed to start.
The method according to claim 27, wherein the allowable start index value refers to an index value corresponding to the second-level control resource of the receiving end, where the index value is allowed to start, or after the index value that allows the start, or The allowable start index value means that the index value corresponding to the second-level control resource of the receiving end does not precede the index value of the allowable start.
The method according to claim 22, wherein the receiving end using the same control group has the same first level control information in the resource controlled by the first level, and/or scrambles using the same radio network temporary identifier RNTI The first level control information;

The receiving end using the same control group is at least one, and the second level of the receiving end is controlled within the range of the same second level control resource.
The method according to claim 22, wherein the receiving end using the same control group has the same first level control information in the resource controlled by the first level, and/or scrambles using the same radio network temporary identifier RNTI The first level control information;

The number of receiving ends using the same control group is at least one, and the second level of the receiving end is controlled within a range of positions of the same second-level control resource.
The method of claim 22 further comprising:

Knowing, by first level control or higher layer signaling, a minimum and/or maximum degree of aggregation allowed by the second level of control within the control group or using the receiving end of the same control group;

Alternatively, the degree of aggregation used by the second level control in the control group or using the receiving end of the same control group is learned by the first level control or the higher layer signaling.
The method of claim 22 further comprising:

The degree of aggregation used by the second-level control of a receiving end is known by the first-level control or the high-level signaling.
The method of claim 23, further comprising:

The subband or PRB set of the system bandwidth partition is obtained by the first level control signaling or the high layer signaling, wherein the PRBs in the one PRB set are continuous or discrete.
The method of claim 22 further comprising:

The number in the control group used by the receiving end is learned by the high layer signaling or the physical layer signaling, or the receiving end determines the control group used by the receiving end according to its own ID or C-RNTI.
The method of claim 23 wherein said controlling unit comprises:

The control unit is divided according to the physical resource block PRB, REG, CCE or RE, wherein one or more control units carry a second level control.
The method according to claim 22, wherein the receiving end knows the location range of the second-level control resource corresponding to the receiving end according to the received signaling and/or by a predetermined agreement, including:

Obtaining, by the downlink control information DCI in the first-level control, a location range of the second-level control resource allocated to the control group;

Or, when the resource range of the second-level control is composed of the PRB, the PRB corresponding to the location range of the second-level control resource is obtained by using the resource allocation information in the DCI in the first-level control.
The method of claim 22 wherein said signaling comprises:

The first level of control, physical layer or higher layer signaling.
The method according to claim 22, wherein the location range of the second level control resource comprises a location of a time domain resource and/or a frequency domain resource, and the location of the frequency domain resource is a subband or a physical resource block PRB, a location at which one or more of the resource element group REG, the control channel element RE, or the resource element is located;

The location of the time domain resource includes:

The number of positions and symbols of the time domain resource symbols pre-agreed with the receiving end;

Or indicating the number of symbols to the receiving end through high layer signaling or physical layer signaling, where the symbol position is pre-agreed with the receiving end;

Or indicating the location of the symbol to the receiving end through high layer signaling or physical layer signaling, the number of symbols being pre-agreed with the receiving end.
The method of claim 22, wherein the number of the pre-agreed time-frequency resource symbols is one or two, and the pre-agreed position is a previous or first two symbols in the scheduling unit.
The method according to any one of claims 22 to 43, wherein the resource level of the second level control comprises at least one resource controlled by the second level of the receiving end.
An apparatus for indicating a location of a downlink control resource, where the apparatus is applied to a transmitting end, including:

a first indication module, configured to indicate by a signaling and/or a location range of a second level control resource; the sender indicates and/or implies a control group used by the receiver, and the sender combines the control group Indicates and/or implies the second level of control resources at the receiving end.
The apparatus of claim 45, further comprising:

The second indication module is configured to divide the time domain and/or the frequency domain resource in the location range of the second-level control resource into one or more control units, and the one or more control units correspond to one index value .
A downlink control resource location determining apparatus, wherein the apparatus is applied to a receiving end, including:

The obtaining module is configured to learn the location range of the second-level control resource corresponding to the receiving end according to the received signaling and/or by a predetermined agreement; and learn the receiving end according to the received signaling and/or by a predetermined agreement The control group used, the receiving end knows its own second-level control resource in combination with the control group.
The apparatus of claim 66, wherein the learning module is further configured to:

The time domain and/or the frequency domain resource within the location range of the receiving end that knows the second-level control resource according to the pre-provision is divided into one or more control units, and the one or more control units correspond to one index value. .
A transmitting end includes a processor and a memory storing the processor-executable instructions, and a data transceiver for data transmission and/or reception, when the instructions are executed by the processor, performing the following operations:

Declaring and/or implying a range of locations of the second level of control resources by signaling;

The control group used by the receiving end is indicated and/or implied, and the transmitting end in combination with the control group indicates and/or implies the second level of control resources of the receiving end.
A receiving end comprising a processor and a memory storing the processor executable instructions, and a data transceiver for data transmission and/or reception, when the instructions are executed by the processor, performing the following operations:

Obtaining a location range of the second-level control resource corresponding to the receiving end according to the received signaling and/or by a predetermined agreement;

The receiving end learns its own second-level control resource in combination with the control group according to the received signaling and/or the pre-agreed to know the control group used by the receiving end.
A storage medium arranged to store program code for performing the method of any one of claims 1 to 44.