CN107453840A

CN107453840A - The dispatching method and equipment of a kind of resource

Info

Publication number: CN107453840A
Application number: CN201710373245.2A
Authority: CN
Inventors: 付景兴; 喻斌; 钱辰; 熊琦; 郝晨曦
Original assignee: Beijing Samsung Telecommunications Technology Research Co Ltd; Samsung Electronics Co Ltd
Current assignee: Beijing Samsung Telecommunications Technology Research Co Ltd; Samsung Electronics Co Ltd
Priority date: 2016-05-30
Filing date: 2017-05-24
Publication date: 2017-12-08
Anticipated expiration: 2037-05-24
Also published as: CN107453840B

Abstract

This application discloses a kind of dispatching method of resource, including：UE determines the mode of resource distribution instruction in first kind search space Downlink Control Information DCI and the second class search space DCI；Wherein, the mode of the resource distribution instruction includes the allocation unit of UE frequency domain resources and is allowed for bandwidth and the position of all frequency domain resources of UE frequency domain resources distribution；In first kind search space and the second class search space, the UE carries out blind check in the way of corresponding resource distribution instruction, to PDCCH/EPDCCH, it is determined that actual up and/or downlink resource bandwidth and position for UE distribution.Using the application, in the case of UE can not support whole system bandwidth, the up-downgoing resource of base station distribution also can be rationally determined.

Description

Resource scheduling method and equipment

Technical Field

The present application relates to the field of wireless communication technologies, and in particular, to a method and a device for resource scheduling.

Background

In the Long Term Evolution Advanced (LTE-a) system, each radio frame is 10ms in length and is equally divided into 10 subframes. A Transmission Time Interval (TTI) is defined over one subframe. Fig. 1 is a schematic diagram of a frame structure of a Frequency Division Duplex (FDD) system, where each downlink subframe includes two time slots, and each time slot includes 7 Orthogonal Frequency Division Multiplexing (OFDM) symbols for a general Cyclic Prefix (CP) length; for extended CP length, each slot contains 6 OFDM symbols.

As shown in fig. 2, which is a schematic diagram of a subframe structure in an LTE system, n is equal to 1, 2, or 3 for transmitting Downlink Control information, including a Physical Downlink Control Channel (PDCCH) and other Control information; the remaining OFDM symbols are used to transmit a Physical Downlink Shared Channel (PDSCH). The basic granularity of Resource allocation is a Physical Resource Block (PRB) pair, where one PRB includes 12 consecutive subcarriers in frequency and corresponds to one slot in time. Two PRBs in two slots on the same subcarrier within one subframe are referred to as one PRB pair. Within each PRB pair, each Resource Element (RE) is the smallest unit of time-frequency resources, i.e., one subcarrier in frequency and one OFDM symbol in time. The REs may be used for different functions, for example, a part of the REs may be used for transmitting a Cell-specific Reference Signal (CRS), a user-specific demodulation Reference Signal (DMRS), a Channel State Information Reference Signal (CSI-RS), a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), and the like, respectively.

In an LTE system, PDSCH and PUSCH are transmitted by scheduling through a PDCCH or an Enhanced Physical Downlink Control Channel (EPDCCH), where resources for transmitting PDSCH and PUSCH are also allocated through resource allocation signaling in Downlink Control Information (DCI) carried by the PDCCH/EPDCCH, a maximum resource allocated for transmitting PDSCH and PUSCH is all PRB pairs in the entire system bandwidth, a minimum resource allocated for transmitting PDSCH and PUSCH is one PRB pair in the entire system bandwidth, and a granularity of resource allocation is one PRB pair. And the bit number of the resource allocation signaling in the PDCCH/EPDCCH is calculated according to the number of all PRB pairs in the whole system bandwidth. For example, when the system bandwidth is 10MHz, the number of PRB pairs is 50, and the number of bits used for resource allocation signaling in PDCCH/EPDCCH is calculated according to different resource allocation methods when the number of PRB pairs is 50.

In LTE systems, for PDCCH transmissions, a common search space and a UE-specific search space are defined. All the UEs in the common search space can perform demodulation and decoding, and only the specific UE in the UE-specific search space can perform demodulation and decoding. The PDCCH is tracked by performing probe demodulation and decoding (i.e., blind detection) on a set of common search spaces and UE-specific search spaces of all configured candidate PDCCHs, and then finding out a PDCCH scheduled by a base station through a Cyclic Redundancy Check (CRC) Check scrambled with a corresponding Radio Network Temporary Identifier (RNTI) (e.g., C-RNTI). The number of PDCCH candidates for the common search space and the UE-specific search space is shown in table 1. For a common search space, a search space including 4 Control Channel Elements (CCEs) at an aggregation level and 8 CCEs at an aggregation level; for UE-specific search spaces, search spaces with aggregation levels of 1 CCE, 2 CCEs, 4 CCEs, and 8 CCEs are included. For each transmission mode, the UE tracks PDCCHs of two different DCI formats, and therefore, for the common search space, the UE tracks 2 × 4+2 — 12 PDCCH candidates, and for the UE-specific search space, the UE tracks 2 × 6+2+2 — 32 PDCCH candidates, where one is a fallback DCI format, e.g., DCI format 1A, and the other is a normal DCI format, e.g., DCI format 1B/1D/2/2a, etc., and the above describes scheduling of PDSCH. In the following, referring to the scheduling of the PUSCH, the PUSCH may be scheduled through the PDCCH in the common search space or may be scheduled through the PDCCH in the UE-specific search space.

TABLE 1

The UE-specific search space is related to a user Radio Network Temporary Identity (RNTI) value and a subframe index, that is, after the UE user radio network temporary identity value is determined, the UE is on a specific subframe, and the position of the CCE occupied by the UE-specific search space is determined.

In an LTE system, the UE is capable of supporting all system bandwidths. Therefore, when determining the actually allocated uplink and downlink data resources, the UE may perform DCI blind detection in all frequency domain ranges of the common search space and the UE-specific search space. However, in the new radio access technology (NR), since the width of the frequency band is greatly increased, the system bandwidth is also greatly increased, and some UEs may not be able to support such a large system bandwidth, and the maximum system bandwidth supported by different UEs is also different, and a method for scheduling uplink and downlink data under the condition of different supported system bandwidths is studied herein.

Disclosure of Invention

The application provides a resource scheduling method and equipment, which can reasonably determine uplink and downlink resources allocated by a base station under the condition that UE cannot support the bandwidth of the whole system.

In order to achieve the purpose, the following technical scheme is adopted in the application:

a method for scheduling resources comprises the following steps:

user Equipment (UE) determines the resource allocation indication mode in first-type search space Downlink Control Information (DCI) and second-type search space DCI; the resource allocation indication mode comprises an allocation unit of UE frequency domain resources and the bandwidth and the position of all frequency domain resources allowed to be used for the UE frequency domain resource allocation;

in the first type of search space and the second type of search space, the UE performs blind detection on the PDCCH/EPDCCH according to the allocation unit of the UE frequency domain resources in the corresponding resource allocation indication manner on the bandwidths and positions of all the frequency domain resources allowed to be used for the UE frequency domain resource allocation in the corresponding resource allocation indication manner, and determines the bandwidths and positions of the uplink and/or downlink resources actually allocated to the UE.

Preferably, the determining, by the UE, the resource allocation indication in the first type of DCI includes:

the UE determines the resource allocation indication mode in the first type of search space DCI according to the public signaling or the initial access information sent by the base station; or,

the UE determines the bandwidth and the position of all frequency domain resources allowed to be used for UE frequency domain resource allocation in the first type of search space DCI according to a common signaling or initial access information sent by a base station, and determines the allocation unit of the UE frequency domain resources in the first type of search space DCI by presetting; or,

and the UE determines the resource allocation indication mode in the first type of DCI according to the preset setting.

Preferably, the determining, by the UE, the resource allocation indication in the second type of DCI includes:

the UE determines the resource allocation indication mode in the second type of DCI according to the high-level signaling sent by the base station; or,

the UE determines the bandwidth and the position of all frequency domain resources allowed to be used for UE frequency domain resource allocation in the second type of search space DCI according to a high-level signaling sent by a base station, and determines the allocation unit of the UE frequency domain resources in the second type of search space DCI through presetting; or,

for the DCI in the fallback transmission mode, the UE determines the mode of resource allocation indication in the DCI in the second type of search space according to the common signaling or the initial access information sent by the base station, or the UE determines the mode of resource allocation indication in the DCI in the specific search space to be the same as the mode of resource allocation indication in the DCI in the first type of search space; for the DCI in the non-fallback transmission mode, the UE determines the resource allocation indication mode in the DCI in the second type of search space according to the high-level signaling sent by the base station, or the UE determines the bandwidth and the position of all frequency domain resources allowed to be used for allocating the UE frequency domain resources in the DCI in the second type of search space according to the high-level signaling sent by the base station, and determines the allocation unit of the UE frequency domain resources in the DCI in the second type of search space through presetting; or,

the manner of resource allocation indication in the unique search space DCI is determined to be the same as the manner of resource allocation indication in the first type of search space DCI.

Preferably, when the UE does not determine the manner of the resource allocation indication in the second type of search space DCI, the UE determines the manner of the resource allocation indication in the specific search space DCI to be the same as the manner of the resource allocation indication in the first type of search space DCI.

Preferably, the determining, by the UE, the resource allocation indication in the first type of search space and the second type of search space DCI includes:

the UE receives a common signaling or initial access information sent by a base station and determines frequency domain information of two or more than two resource allocations; wherein the frequency domain information comprises the bandwidth and the position of all frequency domain resources of the resource allocation;

the UE allocates one resource of two or more than two resource allocations to a first type of search space according to the indication of the common signaling or the initial access information, and takes the bandwidth and the position of all frequency domain resources allocated to the resource as the bandwidth and the position of all frequency domain resources allowed to be used for the allocation of the UE frequency domain resources in the first type of search space DCI;

and the UE selects one resource from two or more than two resource allocations according to a preset rule to allocate the resource to the second type of search space, and takes the bandwidth and the position of all frequency domain resources allocated by the resource as the bandwidth and the position of all frequency domain resources allowed to be used for UE frequency domain resource allocation in the second type of search space DCI.

Preferably, when determining the manner of resource allocation indication in the first type of search space DCI and the second type of search space DCI, the UE determines the unit of UE frequency domain resource allocation in the first type of search space DCI and/or the second type of search space DCI according to the preset setting.

Preferably, the frequency domain information includes allocation units of UE frequency domain resources;

when the resource allocation indication mode in the first type of search space and the second type of search space DCI is determined, the UE takes the allocation unit of the UE frequency domain resources in the resource allocation for the first type of search space as the allocation unit of the UE frequency domain resources in the first type of search space DCI; and/or the UE takes the allocation unit of the UE frequency domain resources in the resource allocation for the second type of search space as the allocation unit of the UE frequency domain resources in the second type of search space DCI.

the UE allocates one resource of two or more than two resource allocations to a first type of search space according to the common signaling or the initial access information, and takes the bandwidth and the position of all frequency domain resources allocated to the resource as the bandwidth and the position of all frequency domain resources allowed to be used for UE frequency domain resource allocation in the first type of search space DCI;

when the specific search space DCI of the UE is the DCI of the fallback transmission mode, the UE determines the mode of the resource allocation indication in the specific search space DCI to be the same as the mode of the resource allocation indication in the first type of search space DCI; when the second type of search space DCI is DCI in a non-fallback transmission mode, the UE selects one resource from two or more resource allocations according to a preset rule to allocate the resource to the second type of search space, and uses the bandwidth and the position of all frequency domain resources allocated to the resource as the bandwidth and the position of all frequency domain resources allowed to be used for UE frequency domain resource allocation in the second type of search space DCI.

Preferably, when determining the manner of resource allocation indication in the first type of search space DCI, the UE determines the unit of UE frequency domain resource allocation in the first type of search space DCI according to the preset setting;

and/or the presence of a gas in the gas,

when the resource allocation indication mode in the second type of search space DCI is determined, if the second type of search space DCI is DCI in a non-fallback transmission mode, the UE determines the unit of UE frequency domain resource allocation in the second type of search space DCI according to the preset setting.

when the resource allocation indication mode in the first type of search space and the second type of search space DCI is determined, the UE takes the allocation unit of the UE frequency domain resources in the resource allocation for the first type of search space as the allocation unit of the UE frequency domain resources in the first type of search space DCI; and/or, when the second type of search space DCI is a non-fallback transmission mode DCI, the UE uses an allocation unit of UE frequency domain resources in resource allocation for the second type of search space DCI as an allocation unit of the UE frequency domain resources in the second type of search space DCI.

Preferably, the preset rule is to select resource allocation in which the bandwidth of all frequency domain resources is the maximum and is less than or equal to the maximum frequency domain bandwidth supported by the UE.

Preferably, before the UE determines the manner of resource allocation indication in the first type of DCI, the method further includes: the UE determines at least one sub-bandwidth indicated in the first type of search space DCI; the manner for determining the resource allocation indication in the first type of search space DCI includes: determining the resource allocation indication mode in each sub-bandwidth indicated by the first type of search space DCI;

and/or the presence of a gas in the gas,

before the UE determines the manner of resource allocation indication in the second type of search space DCI, the method further includes: the UE determines at least one sub-bandwidth indicated in the second type of search space DCI; the manner for determining the resource allocation indication in the second type of search space DCI includes: and determining the mode of resource allocation indication in each sub-bandwidth indicated by the second type of search space DCI.

Preferably, before the UE determines the manner of resource allocation indication in the first type of DCI, the method further includes: the UE determines that the frequency domain resources are indicated in the first type of DCI in a one-step or two-step mode according to the received system information indication or high-level signaling configuration; if the one-step mode is determined, directly executing the mode that the UE determines the resource allocation indication in the first type of search space DCI; if the two-step mode is determined, before the UE determines the mode of resource allocation indication in the first type of search space DCI, determining at least one sub-bandwidth indicated in the first type of search space DCI, where the determining the mode of resource allocation indication in the first type of search space DCI includes: determining the resource allocation indication mode in each sub-bandwidth indicated by the first type of search space DCI;

and/or the presence of a gas in the gas,

before the UE determines the resource allocation indication mode in the second type of search space DCI, the method further includes: the UE determines that the frequency domain resources are indicated in the second type of DCI in a one-step or two-step mode according to the received high-level signaling configuration; if the one-step mode is determined, directly executing the mode that the UE determines the resource allocation indication in the second type of search space DCI; if the two-step mode is determined, before the UE determines the mode of resource allocation indication in the second type of search space DCI, determining at least one sub-bandwidth indicated in the second type of search space DCI, where the determining the mode of resource allocation indication in the second type of search space DCI includes: and determining the mode of resource allocation indication in each sub-bandwidth indicated by the second type of search space DCI.

Preferably, when the second type of search space DCI is a fallback mode DCI, before the UE determines the resource allocation indication mode in the second type of search space DCI, the method further includes: the determining at least one sub-bandwidth indicated in the second type of search space DCI; the manner for determining the resource allocation indication in the second type of search space DCI includes: determining the mode of resource allocation indication in each sub-bandwidth indicated by the second type of search space DCI;

and/or the presence of a gas in the gas,

when the second type of search space DCI is a DCI in a non-fallback mode, before the UE determines the resource allocation indication mode in the second type of search space DCI, the method further includes: the UE determines that the frequency domain resources are indicated in the second type of DCI in a one-step or two-step mode according to the received high-level signaling configuration; if the one-step mode is determined, directly executing the mode that the UE determines the resource allocation indication in the second type of search space DCI; if the two-step mode is determined, before the UE determines the mode of resource allocation indication in the second type of search space DCI, determining at least one sub-bandwidth indicated in the second type of search space DCI, where the determining the mode of resource allocation indication in the second type of search space DCI includes: and determining the mode of resource allocation indication in each sub-bandwidth indicated by the second type of search space DCI.

Preferably, for at least one sub-bandwidth indicated in the first type of search space DCI or the second type of search space DCI, the number and the position of PRBs included in the sub-bandwidth are determined according to a preset value, or a system information indication, or a system bandwidth.

A scheduling apparatus of resources, comprising: the device comprises an indication mode determining unit, a blind detection unit and an actual resource determining unit;

the indication mode determining unit is configured to determine a mode of resource allocation indication in the first type of DCI and the second type of DCI; the resource allocation indication mode comprises an allocation unit of UE frequency domain resources and the bandwidth and the position of all frequency domain resources allowed to be used for the UE frequency domain resource allocation;

the blind detection unit is used for performing blind detection on the physical downlink control channel PDCCH/enhanced physical downlink control channel EPDCCH in the first-class search space and the second-class search space according to a corresponding resource allocation indication mode;

and the actual resource determining unit is used for determining the bandwidth and the position of the uplink and/or downlink resource actually allocated to the UE according to the output of the blind detection unit.

According to the technical scheme, in the application, the UE determines the resource allocation indication mode in the first type of DCI and the second type of DCI; the resource allocation indication mode comprises an allocation unit of the UE frequency domain resources and the bandwidth and the position of all frequency domain resources allowed to be used for the UE frequency domain resource allocation; in the first type of search space and the second type of search space, the UE performs blind detection on PDCCH/EPDCCH according to the allocation unit of the UE frequency domain resources in the corresponding resource allocation indication mode on the bandwidth and the position of all frequency domain resources allowed to be used for UE frequency domain resource allocation in the corresponding resource allocation indication mode, and determines the bandwidth and the position of uplink and/or downlink resources actually allocated to the UE. Through the method, the resource allocation indication mode is determined firstly, and then the PDCCH/EPDCCH blind detection is performed according to the mode, so that when the UE cannot support the whole system bandwidth, the range and the unit for performing the blind detection can be determined by using the resource allocation indication mode, and uplink and downlink resources allocated by the base station can be determined reasonably.

Drawings

Fig. 1 is a frame structure diagram of an FDD system;

fig. 2 is a schematic diagram of a subframe structure in an LTE system;

fig. 3 is a schematic diagram of a basic flow of an uplink and downlink resource scheduling method in the present application;

fig. 4 is a schematic diagram of a basic structure of an uplink and downlink resource scheduling device in the present application.

Detailed Description

For the purpose of making the objects, technical means and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings.

To achieve the objective of the present application, the present application proposes a method for resource scheduling, as shown in fig. 3, the method includes the following steps:

step 301: the UE determines the manner of resource allocation indication in at least one search space (referred to herein as a first type of search space, e.g., a common search space, which is used for scheduling System Information (SIBs), randomly accessed PDSCH (Msg2), etc.) and other search spaces (referred to herein as a second type of search space, e.g., a UE-specific search space, UE-group search space) DCI.

The manner of Resource allocation indication described herein includes an allocation unit of UE frequency domain resources (e.g., referred to as physical Resource Block Group, RBG, Resource Block Group, and subcarrier space) and bandwidths and locations of all frequency domain resources available for UE frequency domain Resource allocation, for example, the location of a frequency domain Resource refers to a center frequency of a frequency Resource.

Step 302: in the first type of search space and the second type of search space, the UE performs blind detection on the PDCCH/EPDCCH according to a corresponding resource allocation indication mode to obtain the bandwidth and the position of uplink and/or downlink data resources actually allocated to the UE.

When the PDCCH/EPDCCH is subjected to blind detection, the UE performs the blind detection of the PDCCH/EPDCCH on the bandwidths and the positions of all the frequency domain resources which are correspondingly used for UE resource allocation in the first type of search space or the second type of search space according to the determined allocation unit of the UE frequency domain resources. After the blind detection is performed, the process of determining the actually allocated resources may be performed in the same manner as the prior art, and will not be described herein again.

The technical solution of the present application will be described in further detail by the preferred embodiments.

Example one

In this embodiment, how to determine the resource allocation indication in the DCI of the first type of search space and the second type of search space is described separately, so as to determine the detection manner of the DCI in the corresponding search space.

The way how the resource allocation indication in the first type of search space DCI is determined is described first.

The first method is as follows:

for the bandwidth and the position of all the frequency domain resources available for UE frequency domain resource allocation in the resource allocation indication manner, one determination manner is: the UE receives common signaling (e.g., a Master Information Block (MIB), System Information (System Information)) or initial access Information sent by the base station, and learns the bandwidth (which may be referred to as a common System bandwidth) and location of all frequency domain resources that can be used for resource allocation in the first type of search space DCI by receiving the common signaling or the initial access Information. For example, the UE derives a system bandwidth available for the first search space DCI according to the received common signaling or initial access information, which is 110 PRBs, or 75 PRBs, or 50 PRBs, or 25 PRBs, or 15 PRBs, or 6 PRBs, the positions of the PRBs may be derived according to the positions of the synchronization signals, and the bandwidth of each PRB is 180 kHz.

For the allocation unit of the UE frequency domain resource in the resource allocation indication manner, there may be two determination manners, where one determination manner is the same as that described above, that is, the UE receives the common signaling or the initial access information sent by the base station, and determines the allocation unit of the UE frequency domain resource through the common signaling or the initial access information; another determination method may be to determine the allocation unit of the UE frequency domain resource according to a preset setting, for example, according to a protocol; still another way to determine the frequency domain resource allocation unit may be to determine the allocation unit of the frequency domain resources according to the bandwidths of all the frequency domain resources allocated to the resources in the first type of search space DCI.

And the UE performs blind detection on the PDCCH of the first type of search space according to the determined resource allocation indication mode to obtain the number and the position of the uplink and downlink resources actually allocated to the UE.

The second method comprises the following steps:

another way of determining the resource allocation indication in the first type of search space is that the UE determines the resource allocation indication in the first type of search space according to a preset (e.g. protocol specification), and specifically includes a bandwidth (may be referred to as a common system bandwidth) and a location of all frequency domain resources that can be used for resource allocation in the first type of search space DCI, and an allocation unit of the UE frequency domain resources in the first type of search space. For example, the protocol presets that the system bandwidth available for the first type of search space DCI is 110 PRBs, the positions of the 110 PRBs can be derived according to the positions of the synchronization signals, the bandwidth of each PRB is 180kHz, and meanwhile, the protocol presets that the UE frequency domain resource allocation unit of the first type of search space DCI is 2 PRB pairs. And the UE performs blind detection on the PDCCH of the first type of search space according to the information to obtain the bandwidth and the position of the uplink and downlink resources actually allocated to the UE. The blind detection times of the PDCCH/EPDCCH of the first type search space by the UE are known by receiving a common signaling or initial access information or are preset by a protocol. The format (including the bit number contained in the PDCCH/EPDCCH) of the PDCCH/EPDCCH of the UE for blind detection of the PDCCH/EPDCCH of the first type of search space is obtained by common signaling indication or initial access information, or is preset by a protocol.

The following describes the manner of resource allocation indication in the second type of search space DCI, which may be used for UE-specific search spaces or UE-group search spaces.

The first method is as follows:

for the bandwidth and the position of all the frequency domain resources available for UE frequency domain resource allocation in the resource allocation indication manner, one determination manner is: and the UE receives a high-layer signaling sent by the base station, and the UE knows the bandwidth (which can be called as UE-specific system bandwidth) and the position of all frequency domain resources which can be used for resource allocation in the second type of search space DCI through the indication of the high-layer signaling. For example, the higher layer signaling configuration information indicates that the system bandwidth available for the second type of search space DCI is 110 PRBs, the positions of the 110 PRBs are indicated by the higher layer signaling configuration information, and the bandwidth of each PRB is 180 kHz.

For the allocation unit of the UE frequency domain resource in the resource allocation indication manner, there may be two determination manners, where one determination manner is the same as the above, that is, the UE receives the high layer signaling sent by the base station, and determines the allocation unit of the UE frequency domain resource through the indication of the high layer signaling; another determination method may be to determine the allocation unit of the UE frequency domain resource according to a preset setting, for example, according to a protocol; still another way to determine the frequency domain resource allocation unit may be to determine the allocation unit of the frequency domain resources according to the bandwidth of all the frequency domain resources allocated to the resources in the second type of search space DCI.

And the UE performs blind detection on the PDCCH of the second type of search space according to the determined resource allocation indication mode to obtain the bandwidth and the position of the uplink and downlink resources actually allocated to the UE. The blind detection times of the PDCCH/EPDCCH of the second type of search space by the UE are configured by high-level signaling or preset by a protocol. The format (including the number of bits contained in the PDCCH/EPDCCH) of the PDCCH/EPDCCH blind-detected by the UE on the PDCCH/EPDCCH in the second search space is configured by a high-level signaling or preset by a protocol.

The second method comprises the following steps:

the second type of search space includes two configured transmission modes, one of which may be referred to as a fallback transmission mode (e.g., DCI format 1A) and the other as a non-fallback transmission mode (e.g., DCI format 1D, DCI format 2, DCI format 2A, etc.).

For the fallback transmission mode, the UE directly uses the manner of resource allocation indication in the first type of search space DCI as the manner of resource allocation indication in the specific search space DCI, that is, the manner of resource allocation indication in the first type of search space DCI and the second type of search space DCI is the same.

Since the second type of search space includes a fallback transmission mode and a non-fallback transmission mode, which are UE-specific search spaces, and also includes a UE-group search space, which is for a group of UEs, for example, power control commands may be transmitted through the UE-group search space, some instructions may be transmitted through the UE-group search space, and some data may also be scheduled, for example, reconfiguration may be performed on the system, and the data transmitted through the search space is less, and in order to reduce the number of blind detections of DCI, the fallback transmission mode in the UE-specific search space and the UE-group search space use the same DCI format as much as possible. The following describes several resource allocation indication modes of the search space.

For a fallback transmission mode, the transmission mode is mainly used for system reconfiguration, and the scheduled data is relatively less, and for the fallback transmission mode, the reliability of DCI transmission is required to be relatively high, so that the bandwidth of resources can be relatively small, the number of bits required for resource allocation is relatively small, and the center frequencies can be the same, so that when the UE detects the two transmission modes simultaneously, the complexity of implementation is relatively small, and the unit of resource allocation (i.e., RBG) can be the same as that of the non-fallback transmission mode. For the non-fallback transmission mode, the frequency resources allocated by the UE are very large, and if the same frequency domain resource allocation unit is adopted as the non-fallback transmission mode, the number of bits required by the frequency domain resource allocation indication is relatively large, so that the unit of the resource allocation of the UE in the non-fallback transmission mode can be relatively large, and thus, the frequency domain resource allocation indication bits can be saved. And the center frequency is the same, so that the time for switching different search spaces can be reduced.

In addition, since the UE receives the UE-group common signaling, for example, the UE-group power control command, which is received every slot, the number of bits of the DCI of the UE-group is relatively small, and the number of bits of the DCI of the fallback transmission mode may be the same as the number of bits of the DCI of the UE-group in order to reduce the complexity of the UE blind detection of the DCI. In this way, the fallback transmission mode may employ a UE-specific search space.

Accordingly, the bandwidths of the frequency domain resources of the fallback and non-fallback transmission modes and the allocation unit of the UE frequency domain resources may be independently determined, for example, configured by independent higher layer signaling. The bit number of the DCI of the UE-group is similar to that of the UE-specific search space, and only one search space can be used, so that the blind detection times of the DCI are further reduced.

For a non-fallback transmission mode, for bandwidths and positions of all frequency domain resources available for UE frequency domain resource allocation in the resource allocation indication manner, the determination manner may be: the UE receives a high layer signaling sent by the base station, and knows, through an indication of the high layer signaling, bandwidths (which may be referred to as system bandwidths) and locations of all frequency domain resources that can be used for resource allocation in the second type of search space DCI, for example, the high layer signaling configuration information indicates that the system bandwidth that can be used for the second type of search space DCI is 110 PRBs, locations of the 110 PRBs are indicated by the high layer signaling configuration information, and a bandwidth of each PRB is 180 kHz. The allocation unit of the UE frequency domain resource in the resource allocation indication manner may be determined according to a higher layer signaling sent by the base station, or may be determined according to a preset (for example, protocol preset) configuration.

And the UE performs blind detection on the PDCCH of the second type of search space according to the determined resource allocation indication mode to obtain the bandwidth and the position of the uplink and downlink resources actually allocated to the UE.

The third method comprises the following steps:

in this manner, the manner of resource allocation indication in the second type of search space DCI may be determined directly as in the first type of search space.

Alternatively, when the method of indicating resource allocation in the second type of search space DCI cannot be determined in a preset manner, for example, when the UE does not receive the higher layer signaling indicating the method of indicating resource allocation in the second type of search space DCI in the first or second method, the method of indicating resource allocation in the second type of search space DCI may be determined to be the same as the method of indicating resource allocation in the first type of search space DCI.

In the above process, the manners of resource allocation indication in the first type of search space DCI and the second type of search space DCI are basically independent of each other. Two modes are given below, and both modes respectively indicate the resource allocation indication in the first type of search space and the second type of search space DCI through common signaling or initial access information indication.

The first method is as follows:

the UE receives common signaling or initial access information sent by the base station to the UE, and learns the bandwidth (which may be referred to as system bandwidth) and location of all frequency domain resources allocated by two or more than two resources through the common signaling or the initial access information. The bandwidth (may be referred to as system bandwidth) and location of all frequency domain resources of one resource allocation are used for resource allocation in the first type of search space DCI, and the bandwidth (may be referred to as system bandwidth) and location of all frequency domain resources of the resource allocation are used as the bandwidth and location of all frequency domain resources available for UE frequency domain resource allocation in the first type of search space DCI. The specific resource allocation for the first type of search space DCI may be determined by common signaling or initial access information or preset, for example, the first resource allocation is specified for the first type of search space DCI. The resource allocation in the second type of search space DCI may select one resource from two or more resource allocations obtained by using a common signaling or initial access information according to a preset rule to allocate the resource for the second type of search space DCI, and use the bandwidth and the position of all frequency domain resources allocated by the resource as the bandwidth and the position of all frequency domain resources available for UE frequency domain resource allocation in the second type of search space. The specific preset rule may be set as needed, for example, the preset rule may be to select resource allocation in which the bandwidth of all frequency domain resources is the largest and is less than or equal to the largest frequency domain bandwidth supported by the UE.

The allocation units of the UE frequency domain resources in the first-type search space DCI and the second-type search space DCI may be determined according to a preset (for example, the allocation units of the UE frequency domain resources are preset and fixed by a protocol), or may also be performed according to the above-mentioned method of determining resource allocation according to the common signaling or the initial access information. Specifically, the allocation unit of the UE frequency domain resource in the two or more resource allocations is indicated while the bandwidth (may be referred to as system bandwidth) and the location of all frequency domain resources of the two or more resource allocations are derived in the common signaling or the initial access information. Based on the above, for the resource allocation for the first type of search space DCI, the allocation unit of the UE frequency domain resource in the resource allocation is used as the allocation unit of the UE frequency domain resource in the first type of search space DCI; for the resource allocation for the second type of search space DCI, the allocation unit of the UE frequency domain resource in the resource allocation is used as the allocation unit of the UE frequency domain resource in the second type of search space DCI.

In summary, the frequency domain information of two or more resource allocations obtained according to the common signaling or the initial access information indication may include bandwidths and locations of all frequency domain resources, and preferably, may further include allocation units of the UE frequency domain resources.

The second method comprises the following steps:

and the UE receives the common signaling or the initial access information sent by the base station to the UE, and acquires the frequency domain information of two or more than two resource allocations through the common signaling or the initial access information. The frequency domain information of the resource allocation is the same as the above-mentioned manner, and is not described here again. For the way of resource allocation indication in the first type of DCI, the determination method is the same as that of the first type of DCI, and is not repeated here.

For the second type of search space, DCI includes two configured transmission modes, one of which may be referred to as a fallback transmission mode (e.g., DCI format 1A) and the other as a non-fallback transmission mode (e.g., DCI format 1D, DCI format 2, DCI format 2A, etc.).

For the fallback transmission mode, the manner of the resource allocation indication in the second type of search space DCI is determined to be the same as the manner of the resource allocation indication in the first type of search space DCI.

For the non-fallback transmission mode, the determination of the resource allocation indication manner is the same as the manner of searching the second type of search space in the above-mentioned manner one, and is not repeated here.

The manner of resource allocation indication in the first type of search space DCI and the second type of search space DCI can be determined through various manners described above. Secondly, determining a DCI detection mode according to the determined resource allocation indication mode, namely performing blind detection on the PDCCH/EPDCCH in the first search space and the second search space according to the corresponding resource allocation indication mode; and finally, determining the bandwidth and the position of the uplink and/or downlink resource actually allocated to the UE according to the blind detection result.

Example two

Methods of indicating frequency domain resources in DCI may be divided into two types. One way is to indicate by one step, i.e. by directly indicating the number and location of PRBs within the allocated system bandwidth or within the configured bandwidth. Another way is to indicate jointly by two steps, a first step indicates sub-bandwidths (also called Bandwidth Parts (BPs)) within the system bandwidth or within the configured bandwidth, and a second step indicates the number and location of PRBs within the BP indicated by the first step. For the UE with limited supported bandwidth, the information bit expense can be saved by adopting the method of indicating the frequency domain resource by two steps together. The sub-bandwidth indicated in the first step may be one or more, and when the sub-bandwidth indicated is multiple, the second step indicates the number and the position of PRBs in each BP.

The following describes whether resource allocation in the first type of search space downlink control information DCI and the second type of search space DCI adopts a one-step indication manner or a two-step indication manner.

For the first type of search space downlink control information DCI, there are several methods as follows.

The method comprises the following steps:

the frequency resource allocation of scheduling uplink physical shared channel (PUSCH) and downlink physical shared channel (PDSCH) in the first search space downlink control information DCI adopts a one-step indication mode. Because the bandwidth capabilities supported by different UEs are different, and the UE that has just accessed the system may not require the UE to adopt the two-step indication mode under the condition that the base station may not know the bandwidth capabilities supported by the UE. The allocation unit of the UE frequency domain resource and the bandwidth and the location of all the frequency domain resources available for the UE frequency domain resource allocation can be obtained by the method in the first embodiment.

In fact, the processing of the method is the corresponding processing mode when the foregoing embodiment is executed separately.

The second method comprises the following steps:

the resource allocation of scheduling uplink physical shared channel (PUSCH) and downlink physical shared channel (PDSCH) in the first type of search space downlink control information DCI adopts a two-step indication mode. In the first step, at least one BP indicated by DCI is determined, where the number of PRBs included in the BP is preset by a protocol or indicated by system information (the system information includes a Master Information Block (MIB) or a System Information Block (SIB)). The number of PRBs occupied by each BP in the first step and the positions of these PRBs may be preset by a protocol, or may be indicated by system information (the system information includes a Master Information Block (MIB) or a System Information Block (SIB)), or may be inferred from a system bandwidth (or a minimum bandwidth determination). In the second step, the manner of resource allocation indication in each BP in the first step is determined, where the allocation unit of the UE frequency domain resource in each BP and the bandwidths and locations of all the frequency domain resources available for UE frequency domain resource allocation can be obtained by the method in the first embodiment.

The processing of the method is to add a processing for indicating a sub-bandwidth on the basis of the processing of the first embodiment, and accordingly, the resource allocation indication mode in the first type of search space DCI in the first embodiment is the resource allocation indication mode in the corresponding sub-bandwidth.

The third method comprises the following steps:

the resource allocation of scheduling uplink physical shared channel (PUSCH) and downlink physical shared channel (PDSCH) in the first search space downlink control information DCI is indicated by system information or configured by high-level signaling by adopting an indication mode of two steps or adopting one indication mode of one step. If the indication mode of the two steps is adopted, in the first step, at least one BP indicated by the DCI is determined. The number of PRBs included in the BP is preset by the protocol, or indicated by system information (the system information includes a Master Information Block (MIB) or a System Information Block (SIB)), or inferred from the system bandwidth. In the second step, the manner of the resource allocation indication in each BP in the first step is determined, where the allocation unit of the UE frequency domain resources in each BP and the bandwidths and locations of all the frequency domain resources available for the UE frequency domain resource allocation can be obtained by the method in the first embodiment.

For the first type of search space, the UE may infer, through protocol presetting or according to system bandwidth, system frequency band range, etc., the BP used for the first type of search space to transmit the PDSCH, and then indicate, through information in the MIB, which BP is scheduled by the DCI in the first type of search space to transmit the PDSCH, or which BP is scheduled by the DCI in the first type of search space to transmit the PDSCH is the BP where the synchronization signal and the PBCH are located.

For the first type of search space, the BP for transmitting DCI may be the synchronization signal and the BP in which PBCH is located, or may be an information indication in the MIB. For the first type of search space, the BP for transmitting the DCI and the PDSCH scheduled by transmitting the DCI of the first type of search space can be in the same BP, so that the BP in which the PDSCH is located does not need to be explicitly indicated in the DCI, and the method is relatively simple to implement; if the BP for transmitting the DCI and the PDSCH for transmitting the first search space DCI scheduling are not in the same BP, the BP in which the PDSCH is located needs to be explicitly indicated in the DCI, and the method can improve the frequency diversity gain through scheduling according to the performance of different BPs.

For the second type of search space downlink control information DCI, there are several methods as follows.

The method comprises the following steps:

the resource allocation of the scheduling uplink physical shared channel (PUSCH) and the downlink physical shared channel (PDSCH) in the second type of search space downlink control information DCI adopts a two-step indication mode. In the first step, at least one BP indicated by DCI is determined, where the BP contains PRB number preset by protocol, or indicated by system information (where the system information includes a Master Information Block (MIB) or a System Information Block (SIB)), or inferred from system bandwidth, or configured by higher layer signaling. In the second step, the manner of the resource allocation indication in each BP in the first step is determined, where the allocation unit of the UE frequency domain resources in each BP and the bandwidths and locations of all the frequency domain resources available for the UE frequency domain resource allocation can be obtained by the method in the first embodiment.

The processing of the method is to add a processing for indicating a sub-bandwidth on the basis of the processing of the first embodiment, and accordingly, the resource allocation indication mode in the first and second types of search space DCI in the embodiment is the resource allocation indication mode in the corresponding sub-bandwidth.

For the second type of search space, the UE may receive higher layer signaling to determine that the UE configures at least one BP, and when the UE configures multiple BPs, determine which of the configured BPs are active by receiving physical layer signaling or medium access layer signaling, for example, the UE configures 3 BPs, BP1, BP2, and BP3, and may activate one of BP1, BP2, and BP3 by physical layer signaling or medium intervention layer signaling due to limited bandwidth processing of the UE.

The second method comprises the following steps:

the resource allocation of the scheduling uplink physical shared channel (PUSCH) and the downlink physical shared channel (PDSCH) in the second type of search space downlink control information DCI adopts one of two-step indication modes or one-step indication mode through high-level signaling configuration. If two steps are adopted for indication, in the first step, at least one BP indicated by DCI is determined, wherein the number of PRBs included in the BP is preset by a protocol, or is indicated by system information (the system information includes a Master Information Block (MIB) or a System Information Block (SIB)), or is inferred from a system bandwidth, or is configured by higher layer signaling. In the second step, the manner of the resource allocation indication in each BP in the first step is determined, where the allocation unit of the UE frequency domain resources in each BP and the bandwidths and locations of all the frequency domain resources available for the UE frequency domain resource allocation can be obtained by the method in the first embodiment. If a step is adopted to indicate, the allocation unit of the UE frequency domain resources and the bandwidths and locations of all the frequency domain resources available for the UE frequency domain resource allocation can be obtained by the method in the first embodiment.

The third method comprises the following steps:

For the transmission mode of fallback, the resource allocation of scheduling uplink physical shared channel (PUSCH) and downlink physical shared channel (PDSCH) in the second type of search space downlink control information DCI adopts a two-step indication mode. In the first step, at least one BP indicated by DCI is determined, where the BP contains PRB number preset by protocol, or indicated by system information (where the system information includes a Master Information Block (MIB) or a System Information Block (SIB)), or inferred from system bandwidth, or configured by higher layer signaling. In the second step, the manner of the resource allocation indication in each BP in the first step is determined, where the allocation unit of the UE frequency domain resources in each BP and the bandwidths and locations of all the frequency domain resources available for the UE frequency domain resource allocation can be obtained by the method in the first embodiment.

For a non-fallback transmission mode, resource allocation of scheduling uplink physical shared channel (PUSCH) and downlink physical shared channel (PDSCH) in the second type of search space downlink control information DCI is configured by a high layer signaling in an indication mode of two steps or in an indication mode of one step. If two steps are adopted for indication, in the first step, at least one BP indicated by DCI is determined, wherein the number of PRBs included in the BP is preset by a protocol, or is indicated by system information (the system information includes a Master Information Block (MIB) or a System Information Block (SIB)), or is inferred from a system bandwidth, or is configured by higher layer signaling. In the second step, the manner of the resource allocation indication in each BP in the first step is determined, where the allocation unit of the UE frequency domain resources in each BP and the bandwidths and locations of all the frequency domain resources available for the UE frequency domain resource allocation can be obtained by the method in the first embodiment. If a step is adopted to indicate, the allocation unit of the UE frequency domain resources and the bandwidths and locations of all the frequency domain resources available for the UE frequency domain resource allocation can be obtained by the method in the first embodiment.

The foregoing is a specific implementation of the resource scheduling method in the present application. The present application further provides a resource scheduling device, and fig. 4 is a schematic diagram of a basic structure of the device. As shown in fig. 4, the apparatus includes: an indication mode determining unit, a blind detection unit and an actual resource determining unit.

An indication mode determining unit, configured to determine a mode of resource allocation indication in first type of search space downlink control information DCI and second type of search space DCI; the resource allocation indication mode comprises an allocation unit of the UE frequency domain resources and the bandwidth and the position of all frequency domain resources allowed to be used for the UE frequency domain resource allocation. And the blind detection unit is used for performing blind detection on the PDCCH/EPDCCH according to the allocation unit of the UE frequency domain resources in the corresponding resource allocation indication mode on the bandwidth and the position of all frequency domain resources allowed to be used for the UE frequency domain resource allocation in the corresponding resource allocation indication mode in the first type search space and the second type search space. And the actual resource determining unit is used for determining the bandwidth and the position of the uplink and/or downlink resource actually allocated to the UE according to the output of the blind detection unit.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A method for scheduling resources, comprising:

2. The method of claim 1, wherein the UE determines the resource allocation indication in the first type of DCI, comprises:

3. The method of claim 1, wherein the UE determines the resource allocation indication in the second type of search space DCI by:

4. The method according to claim 1 or 3, wherein when the UE does not determine the manner of the resource allocation indication in the second type of search space DCI, the UE determines the manner of the resource allocation indication in the specific search space DCI to be the same as the manner of the resource allocation indication in the first type of search space DCI.

5. The method of claim 1, wherein the UE determines the resource allocation indication in the first type of search space and the second type of search space DCI by:

6. The method of claim 5, wherein the UE determines the UE frequency domain resource allocation unit in the first type of search space DCI and/or the second type of search space DCI according to a predetermined setting when determining the manner of the resource allocation indication in the first type of search space DCI and the second type of search space DCI.

7. The method of claim 5 or 6, wherein the frequency domain information comprises allocation units of UE frequency domain resources;

8. The method of claim 1, wherein the UE determines the resource allocation indication in the first type of search space and the second type of search space DCI by:

9. The method according to claim 8, wherein when determining the manner of the resource allocation indication in the first type of DCI, the UE determines the unit of UE frequency domain resource allocation in the first type of DCI according to a predetermined setting;

and/or the presence of a gas in the gas,

10. The method according to claim 8 or 9, wherein the frequency domain information comprises allocation units of UE frequency domain resources;

11. The method according to any of claims 1 to 10, wherein before the UE determines the manner of resource allocation indication in the first type of DCI, the method further comprises: the UE determines at least one sub-bandwidth indicated in the first type of search space DCI; the manner for determining the resource allocation indication in the first type of search space DCI includes: determining the resource allocation indication mode in each sub-bandwidth indicated by the first type of search space DCI;

and/or the presence of a gas in the gas,

12. The method according to any of claims 1 to 10, wherein before the UE determines the manner of resource allocation indication in the first type of DCI, the method further comprises: the UE determines that the frequency domain resources are indicated in the first type of DCI in a one-step or two-step mode according to the received system information indication or high-level signaling configuration; if the one-step mode is determined, directly executing the mode that the UE determines the resource allocation indication in the first type of search space DCI; if the two-step mode is determined, before the UE determines the mode of resource allocation indication in the first type of search space DCI, determining at least one sub-bandwidth indicated in the first type of search space DCI, where the determining the mode of resource allocation indication in the first type of search space DCI includes: determining the resource allocation indication mode in each sub-bandwidth indicated by the first type of search space DCI;

and/or the presence of a gas in the gas,

13. The method according to any of claims 1 to 10, wherein when the second type of search space DCI is a fallback mode DCI, the UE determines the manner of resource allocation indication in the second type of search space DCI, and the method further comprises: the determining at least one sub-bandwidth indicated in the second type of search space DCI; the manner for determining the resource allocation indication in the second type of search space DCI includes: determining the mode of resource allocation indication in each sub-bandwidth indicated by the second type of search space DCI;

and/or the presence of a gas in the gas,

14. The method according to claim 11, 12 or 13, wherein for at least one sub-bandwidth indicated in the first type of search space DCI or the second type of search space DCI, the number and location of physical resource blocks PRB included therein are determined according to a preset value, or a system information indication, or a system bandwidth.

15. A scheduling apparatus of resources, comprising: the device comprises an indication mode determining unit, a blind detection unit and an actual resource determining unit;

the blind detection unit is used for performing blind detection on the physical downlink control channel PDCCH/enhanced physical downlink control channel EPDCCH in the first-class search space and the second-class search space according to the allocation unit of the UE frequency domain resources in the corresponding resource allocation indication mode on the bandwidth and the position of all frequency domain resources allowed to be used for UE frequency domain resource allocation in the corresponding resource allocation indication mode;