CN108934068B

CN108934068B - Resource allocation indication method, terminal and base station

Info

Publication number: CN108934068B
Application number: CN201710369580.5A
Authority: CN
Inventors: 柯颋; 夏亮; 侯雪颖; 童辉
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2017-05-23
Filing date: 2017-05-23
Publication date: 2022-03-08
Anticipated expiration: 2037-05-23
Also published as: CN108934068A

Abstract

The invention provides a method, a terminal and a base station for indicating resource allocation, aiming at the problems that an NR system supports multiple working bandwidth multiplexing, resource fragmentation is possibly caused, and the effectiveness of large bandwidth scheduling is reduced. The invention can effectively schedule the bandwidth under the condition of multiplexing various working bandwidths.

Description

Resource allocation indication method, terminal and base station

Technical Field

The present invention relates to the technical field of resource allocation, and in particular, to a method, a terminal, and a base station for indicating resource allocation.

Background

Currently, LTE supports 3 DL Resource block allocation Indication (RAI) formats (DL type 0/1/2) and 2 UL Resource block allocation Indication formats (UL type 0/1). The DL type 0 is a bitmap (bitmap) indication mode which takes a resource block set (RBG) as a minimum scheduling unit; the DL type 1 distinguishes RBG subsets firstly, and then selects VRB in the RBG subsets in a bitmap mode; DL type 2 supports continuous resource indication with RBG as the minimum scheduling unit or equal-interval discontinuous resource indication; UL type 0 supports continuous resource indication with VRB as the minimum scheduling unit; UL type 1 supports two consecutive resource indications with VRBs as the minimum scheduling unit. Wherein each RBG comprises P VRBs.

TABLE 1

Table 1 compares the bit (bit) overhead of the above various resource block allocation indication modes (DL type 0/1/2 and UL type 0/1) under different system operating Bandwidths (BW). It can be seen that the consecutive resource block allocation indication pattern (DL type 2 and UL type 0/1) or the equally spaced non-consecutive resource block allocation indication pattern (DL type 2) uses fewer bits. In particular, for 100MHz, when a resource block allocation indication manner (DL type 0/1) of the bitmap type is used, 125 bits are required in total; when the continuous resource block allocation indication mode (DL type 2 and UL type 0/1) or the equal interval discontinuous resource block allocation indication mode (DL type 2) is used, only 17 bits need to be used. Therefore, from the perspective of resource block allocation indication overhead, the continuous resource block allocation indication scheme or the equal-interval non-continuous resource block allocation indication scheme should be the reference (baseline) for large-bandwidth (100MHz) scheduling resource block allocation indication.

A base station (gNB) of a 5G new air interface (NR) system supports multiplexing of terminals (UE) with various bandwidths on a frequency domain. For example, the gNB schedules multiple UEs for Downlink (DL) transmission simultaneously on 1 slot (slot), where some UEs have a maximum operating bandwidth of 100MHz and some UEs have a maximum operating bandwidth of only 20 MHz. Under the condition of multiplexing of various working bandwidths, how to effectively schedule the bandwidths is not proposed at present.

Disclosure of Invention

The technical problem to be solved by the embodiments of the present invention is to provide a method, a terminal, and a base station for resource allocation indication, which are used for effectively performing bandwidth scheduling under the condition of multiplexing multiple working bandwidths.

To solve the foregoing technical problem, a method for indicating resource allocation provided in an embodiment of the present invention includes:

sending a first Downlink Control Information (DCI) signaling to a terminal, wherein the first DCI signaling carries at least two resource block allocation indication (RAI) fields, and the RAI fields are used for indicating a group of frequency domain resources;

or sending a second DCI signaling to the terminal, wherein the second DCI signaling carries at least one RAI field and a first indication field for indicating whether a third DCI signaling exists; and sending a third DCI signaling to the terminal when the third DCI signaling exists, wherein the third DCI signaling carries one or more RAI fields.

The embodiment of the invention also provides another method for indicating resource allocation, which comprises the following steps:

receiving a first Downlink Control Information (DCI) signaling sent by a network, wherein the first DCI signaling carries at least two resource block allocation indication (RAI) fields, and the RAI fields are used for indicating a group of frequency domain resources; determining the resource scheduled this time according to the RAI field in the first DCI signaling;

or receiving a second DCI signaling sent by the network, wherein the second DCI signaling carries at least one RAI field and a first indication field for indicating whether a third DCI signaling exists; and receiving a third DCI signaling sent by a network when the third DCI signaling exists, wherein the third DCI signaling carries one or more RAI fields; and determining the resource scheduled this time according to the RAI fields in the second DCI signaling and the third DCI signaling.

An embodiment of the present invention further provides a base station, including:

a first sending unit, configured to send a first downlink control information DCI signaling to a terminal, where the first DCI signaling carries at least two resource block allocation indication RAI fields, and the RAI fields are used to indicate a group of continuous or discontinuous frequency domain resources;

or comprises the following steps:

a second sending unit, configured to send a second DCI signaling to the terminal, where the second DCI signaling carries at least one RAI field and a first indication field for indicating whether a third DCI signaling exists; and the number of the first and second groups,

a third sending unit, configured to send a third DCI signaling to the terminal when the third DCI signaling exists, where the third DCI signaling carries one or more RAI fields.

An embodiment of the present invention further provides a terminal, including:

a first receiving unit, configured to receive a first downlink control information DCI signaling sent by a network, where the first DCI signaling carries at least two resource block allocation indication RAI fields, and the RAI fields are used to indicate a group of continuous or discontinuous frequency domain resources; and the number of the first and second groups,

and a first resource determining unit, configured to determine the resource scheduled this time according to the RAI field in the first DCI signaling.

Or comprises the following steps:

a second receiving unit, configured to receive a second DCI signaling sent by a network, where the second DCI signaling carries at least one RAI field and a first indication field for indicating whether a third DCI signaling exists; and the number of the first and second groups,

a third receiving unit, configured to receive a third DCI signaling sent by a network when the third DCI signaling exists, where the third DCI signaling carries one or more RAI fields;

and the second resource determining unit is used for determining the resource scheduled this time according to the RAI fields in the second DCI signaling and the third DCI signaling.

Compared with the prior art, the resource allocation indication method, the terminal and the base station provided by the embodiment of the invention provide a method for including a plurality of RAI fields in DL/UL grant DCI, wherein each RAI field indicates a section of continuous or discontinuous logic resources, aiming at the problems that an NR system supports multiple working bandwidth multiplexing, which may cause resource fragmentation and reduce the effectiveness of large bandwidth scheduling. In particular, in order to reduce the terminal blind detection overhead, the embodiment of the present invention further provides an indication manner using 2-level DCI, where a default resource indication manner is adopted in the first DCI, a DCI with a certain number of bits may be adopted, and the second DCI is optional and has a variable length for indicating an additional RAI field. For typical applications, the base station schedules the large bandwidth resources using only the first DCI; for the peak rate sensitive user, the base station may use the second DCI to schedule the additional transmission resource, so the method according to the embodiment of the present invention may achieve better balance and trade-off in the resource indication effectiveness and the terminal detection complexity.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a first flowchart of a method for indicating resource allocation according to an embodiment of the present invention;

fig. 2 is a second flowchart of a method for indicating resource allocation according to an embodiment of the present invention;

FIG. 3 is a first example of a resource allocation indication provided by an embodiment of the present invention;

fig. 4 is a flowchart of a method for indicating resource allocation according to an embodiment of the present invention;

fig. 5 is a fourth flowchart of a method for indicating resource allocation according to an embodiment of the present invention;

fig. 6 is a schematic diagram of first DCI signaling according to an embodiment of the present invention;

fig. 7A to 7B are exemplary diagrams of a time-frequency resource relationship between a second DCI and a first DCI according to an embodiment of the present invention;

fig. 8 is a diagram illustrating an example of second DCI according to an embodiment of the present invention;

fig. 9 is a first schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 11 is a third schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 12 is a first schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 13 is a second schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

In the embodiment of the present invention, the Base Station may be a Macro Base Station (Macro Base Station), a micro Base Station (Pico Base Station), a Node B (call of a 3G mobile Base Station), an enhanced Base Station (eNB), a Home enhanced Base Station (Femto eNB or Home eNode B or Home eNB or HeNB), a relay Station, an access point, a RRU (Remote Radio Unit), an RRH (Remote Radio Head), a gNB (call of a 5G mobile Base Station), a network side Node in a 5G mobile communication system, such as a Central Unit (CU, Central Unit) and a Distributed Unit (DU, Distributed Unit), and the like. The terminal may be a mobile phone (or handset), or other device capable of sending or receiving wireless signals, including a User Equipment (UE), a Personal Digital Assistant (PDA), a wireless modem, a wireless communicator, a handheld device, a laptop computer, a cordless phone, a Wireless Local Loop (WLL) station, a CPE (Customer Premise Equipment) or mobile smart hotspot capable of converting mobile signals to WiFi signals, a smart appliance, or other device capable of autonomously communicating with a mobile communication network without human operation, etc. In addition, the terms "system" and "network" are often used interchangeably herein.

As described in the background, the multi-bandwidth UE multiplexing mechanism poses a challenge to the effectiveness of resource scheduling indication for large-bandwidth UEs. For example, the gNB schedules some DL transmission resources for some UEs with 20MHz bandwidth first (approximately 20MHz is allocated in total) on 100MHz bandwidth, and fragmentation occurs on unallocated resources on 100 MHz. Wherein the largest contiguous unallocated resource occupies approximately 40 MHz. At this time, if the gNB allocates scheduling resources for a 100MHz bandwidth UE using only 1 RAI field in a continuous or equally-spaced discontinuous resource block allocation indication manner, the 100MHz can only use bandwidth resources of about 40MHz at the slot at maximum, and at this time, the system can actually allocate bandwidth up to about 80 MHz. Therefore, the mechanism that only a single RAI field is adopted and the single RAI field adopts a continuous or equal-interval discontinuous resource block allocation indication manner is adopted, although the overall bit overhead is less, under the resource fragmentation scene, the actually reachable resource indication range is severely limited.

In view of the above problems, the embodiments of the present invention provide a technical solution that a DL/UL grant includes multiple RAI fields, so that bandwidth scheduling can be effectively performed under the condition of multiplexing multiple working bandwidths, and better balance and compromise are achieved in terms of resource indication effectiveness and UE detection complexity.

Referring to fig. 1, a method for indicating resource allocation according to an embodiment of the present invention, when applied to a base station, includes:

step 11, the base station sends a first Downlink Control Information (DCI) signaling to the terminal, where the first DCI signaling carries at least two resource block allocation indication (RAI) fields, and the RAI fields are used to indicate a group of frequency domain resources.

Here, the first DCI signaling may be signaling for scheduling shared physical resources, and each of the RAI fields may be used to indicate a set of contiguous or non-contiguous frequency domain resources.

Corresponding to the above method, as shown in fig. 2, on the terminal side, the method for indicating resource allocation according to the embodiment of the present invention includes:

step 21, the terminal receives a first DCI signaling sent by the network, where the first DCI signaling carries at least two resource block allocation indication RAI fields, and the RAI fields are used to indicate a group of continuous or discontinuous frequency domain resources.

And step 22, determining the resource scheduled this time according to the RAI field in the first DCI signaling.

Here, the resource scheduled this time may specifically be a shared physical resource.

In the above step, the first DCI may be configured to carry a DL transmission grant (DL grant) indication or a UL transmission grant indication (UL grant), specifically, the base station may carry two or more RAI fields in the first DCI, where each RAI field is configured to indicate a group of consecutive or non-consecutive frequency domain resources, and different RAI fields may indicate by using the same or different resource block allocation indication manners, for example, a consecutive resource block allocation indication manner (DL type 2 and UL type 0/1) or an equally spaced non-consecutive resource block allocation indication manner (DL type 2) is used to use fewer bits, or a bitmap type resource block allocation indication manner (DL type 0/1) is used to indicate fragmented resources. The terminal analyzes the RAI field according to the first DCI signaling sent by the base station, and can determine the resource scheduled this time. Specifically, the shared physical resource includes a PDSCH resource or a PUSCH resource.

In order to facilitate the understanding of the DCI signaling by the network and the terminal, relevant parameters may be defined in advance on the network side and the terminal side. Of course, in the embodiment of the present invention, the base station may also send the configuration parameter of the DCI signaling to the terminal in advance through at least one of a system message and a radio resource control signaling (RRC signaling), where the configuration parameter of the DCI signaling includes at least one of the following parameters: the number of fields of the RAI fields, the frequency domain range corresponding to each RAI field, the subcarrier spacing used by the frequency domain range corresponding to each RAI field, the resource allocation indication mode corresponding to each RAI field, the bit number of each RAI field, the minimum CCE aggregation level and the dedicated NR-PDCCH search space indication parameter.

In this way, the terminal receives the system message and/or the RRC signaling sent by the base station, and receives the configuration parameters of the first DCI signaling sent by the network, so as to obtain at least one of the parameters of the number of RAI fields included in the first DCI, the frequency domain range corresponding to each RAI field, the subcarrier interval used by the frequency domain range corresponding to each RAI field, the resource allocation indication mode corresponding to each RAI field, the number of bits of each RAI field, the minimum CCE aggregation level, the dedicated NR-PDCCH search space indication, and the like.

Fig. 3 shows a specific example of the above embodiment, in which the base station divides the 100MHz large bandwidth into 3 parts, where the first part is a bandwidth of 60MHz, and the second part and the third part are both bandwidths of 20 MHz. The first part of bandwidth is only allocated to the fields supporting large bandwidth (such as 100MHz UE); and the remaining 2 MHz terminals allow resource multiplexing between the 100MHz terminal and the 20MHz terminal. For example, for a large bandwidth terminal that is partially insensitive to peak rate, the base station may configure it to use only 0-60 MHz of bandwidth resources and use only 1 RAI field to indicate the segment of bandwidth resources; for other large bandwidth terminals sensitive to peak rate, the base station configures its full 100MHz bandwidth resource and indicates the 100MHz bandwidth resource by segmenting with 3 RAI fields.

For the above manner of indicating the large bandwidth resource by multiple RAI fields, the base station (gNB) may semi-statically configure related configuration parameters of the first DCI (i.e. DL/UL grant DCI) signaling, such as the number of RAI fields (for example, in fig. 3, the first DCI includes 3 RAI fields), and the indication meaning corresponding to each RAI field in advance through at least one of RRC signaling and system message.

Among the above configuration parameters:

1) the number of RAI fields included in the first DCI indicates the number of RAI fields carried in the DCI, e.g., 3 RAI fields.

2) The frequency domain range to which each RAI field corresponds indicates which frequency domain range each RAI field indicates. For example, the first RAI field indicates 0 to 60MHz in the operating bandwidth, the second RAI field indicates 60 to 80MHz in the operating bandwidth, and the third RAI field indicates 80 to 100MHz in the operating bandwidth, where the above range indication may be referred to as the starting frequency of the operating bandwidth.

3) The subcarrier spacing used by the frequency domain range corresponding to each RAI field may be, for example, indicated by RRC signaling that the frequency domain range indicated by the first RAI field adopts a subcarrier spacing of 60kHz, or indicated by a system message that the frequency domain range of 0-60 MHz adopts a subcarrier spacing of 60 kHz.

4) A resource allocation indication mode corresponding to each RAI field, for example, the first RAI field adopts a continuous or equal-interval discontinuous resource block allocation indication mode; and the second RAI field and the third RAI field both adopt a resource block allocation indication mode in a bitmap form. For another example, the first RAI uses RBG size of 12 RBs, and the second RAI and the third RAI use RBG size of 4 RBs, where RBG (RB group) is the frequency domain minimum granularity of the resource indication unit.

5) The number of bits per RAI field, e.g., the number of bits used per RAI field may be explicitly indicated by the gNB through RRC signaling; alternatively, the field may determine, according to a first preset rule, the number of bits corresponding to at least one parameter according to another parameter, for example, the frequency domain range indicated by each RAI field, the subcarrier interval used by the frequency domain range corresponding to each RAI field, or the resource allocation indication manner corresponding to each RAI field, so as to obtain the number of bits of the RAI field.

6) A minimum CCE aggregation level. The smaller the CCE aggregation level used by each DCI is, the less the number of information bits that can be carried by each DCI is. From the base station perspective, as the RAI field increases, a larger CCE aggregation level may need to be allocated to indicate this information over. From the terminal perspective, if the CCE aggregation level range actually used by the base station can be known in advance, the search space of the CCE aggregation level can be reduced, and thus the DCI blind detection complexity can be reduced;

specifically, the gNB may explicitly indicate, through RRC signaling, a minimum CCE aggregation level used by the base station; or, the terminal may determine, according to the second preset rule, the minimum CCE aggregation level corresponding to the at least one parameter according to other parameters, for example, through at least one parameter of the number of RAI fields, which frequency domain range each RAI field indicates, the subcarrier interval used by the frequency domain range corresponding to each RAI field, the resource allocation indication manner corresponding to each RAI field, and the number of bits in each RAI field, so as to obtain the minimum CCE aggregation level used by the base station;

7) a dedicated NR-PDCCH search space indication;

here, in order to reduce the UE blind detection complexity, the base station may limit the CCE search space in other ways besides the minimum CCE aggregation level, for example, partition a subset in the NR-PDCCH search space, that is, define a dedicated NR-PDCCH search space, which is dedicated to transmitting DCI signaling carrying RAI. In this case, the terminal only needs to detect the DCI signaling in the specific subset, thereby reducing the blind detection complexity. Specific ways of defining the NR-PDCCH search space subset include at least one of the following ways: defining a starting offset for the CCE search space, disabling partial CCE aggregation levels, disabling partial PDCCH candidate locations, etc.

As another implementation manner, in the embodiment of the present invention, the base station may further carry at least one of the following configuration parameters in the first DCI signaling: the number of fields of the RAI fields, the frequency domain range corresponding to each RAI field, the subcarrier spacing used by the frequency domain range corresponding to each RAI field, the resource allocation indication mode corresponding to each RAI field, the bit number of each RAI field, the minimum CCE aggregation level and the dedicated NR-PDCCH search space indication parameter. The terminal receives the first DCI signaling and analyzes the parameters carried in the first DCI signaling, so that the base station can indicate the related parameters.

In addition, regarding the implementation of the RAI field, similar to the prior art may be adopted, other ways of indicating a set of frequency domain resources may be redefined, and more subfields may be added to the RAI field to convey more information based on the prior art. In addition, although the embodiments of the present invention are described with DL grant DCI as an example, the solutions described in the embodiments of the present invention are also applicable to UL grant DCI.

Through the above manner, the terminal can know which CCE aggregation levels are used for blind detection of the first DCI signaling on which PDCCH candidate positions, and can correctly understand the signaling decoding manner and the meaning indicated by each bit in the signaling, thereby realizing the indication of the allocated resources.

The foregoing embodiment provides a semi-static RAI indication method, that is, the base station informs the terminal semi-statically in advance through RRC signaling and/or system message that the first DCI used by the terminal will include several RAI fields and corresponding parameters of each RAI field. Next, a more dynamic indication method is provided in the embodiments of the present invention, that is, an additional RAI field is indicated through an optional second DCI signaling, and the terminal only knows whether the second DCI signaling exists after receiving the first DCI signaling, and obtains more RAI field indications through the second DCI when the second DCI signaling exists.

Referring to fig. 4, a method for indicating resource allocation according to an embodiment of the present invention, when applied to a base station, includes:

step 41, the base station sends a second DCI signaling to the terminal, where the second DCI signaling carries at least one RAI field and a first indication field for indicating whether a third DCI signaling exists.

Here, the second DCI signaling may be signaling for scheduling the shared physical resource. The shared physical resources include PDSCH resources or PUSCH resources.

And 42, when the third DCI signaling exists, the base station sends the third DCI signaling to the terminal, where the third DCI signaling carries one or more RAI fields.

Here, the third DCI signaling may be used to indicate the shared physical resource.

In the above steps, if the first indication field indicates that the third DCI signaling does not exist, step 42 is not executed, and the base station only sends the second DCI signaling to indicate resource allocation.

Corresponding to the above method, as shown in fig. 5, on the terminal side, the method for indicating resource allocation according to the embodiment of the present invention includes:

step 51, the terminal receives a second DCI signaling sent by the network, where the second DCI signaling carries at least one RAI field and a first indication field for indicating whether a third DCI signaling exists.

Here, in step 51, it can be determined whether or not the third DCI signaling to be subsequently transmitted exists according to the first indication field, and if so, the process proceeds to step 52.

And step 52, receiving a third DCI signaling sent by the network when the third DCI signaling exists, where the third DCI signaling carries one or more RAI fields.

And step 53, determining the resource scheduled this time according to the RAI fields in the second DCI signaling and the third DCI signaling.

In the above step 51, if it is determined that the third DCI signaling does not exist, step 54 may be entered, and at this time, the shared physical resource scheduled this time is determined according to the RAI field in the second DCI signaling.

In the above method, the second DCI signaling may be configured to carry a DL transmission grant (DL grant) indication or a UL transmission grant indication (UL grant), specifically, the base station may carry 1 or more than 2 RAI fields in the second DCI signaling, where each RAI field is configured to indicate a group of consecutive or non-consecutive frequency domain resources, and different RAI fields may indicate in the same or different resource block allocation indication manners, for example, in a consecutive resource block allocation indication manner (DL type 2 and UL type 0/1) or an equally spaced non-consecutive resource block allocation indication manner (DL type 2) to use fewer bits, or in a resource block allocation indication manner (DL type 0/1) of a bitmap type to indicate fragmented resources. And the terminal analyzes the RAI field according to the second DCI signaling sent by the base station, so that the resource scheduled at this time can be determined. Specifically, the shared physical resource includes a PDSCH resource or a PUSCH resource.

Similar to the foregoing embodiments, in order to facilitate understanding of DCI signaling by the network and the terminal, relevant parameters may be defined in advance on the network side and the terminal side. Of course, the base station may also transmit the configuration parameters of the second DCI signaling to the terminal in advance through at least one of a system message and radio resource control signaling (RRC signaling), where the configuration parameters of the second DCI signaling include at least one of the following parameters: the number of fields of the RAI fields, the frequency domain range corresponding to each RAI field, the subcarrier spacing used by the frequency domain range corresponding to each RAI field, the resource allocation indication mode corresponding to each RAI field, the bit number of each RAI field, the minimum CCE aggregation level and the dedicated NR-PDCCH search space indication parameter. In this way, the terminal receives the system message and/or the RRC signaling sent by the base station, and receives the configuration parameters of the second DCI signaling sent by the network, so as to obtain at least one of the parameters of the number of RAI fields included in the second DCI, the frequency domain range corresponding to each RAI field, the subcarrier interval used by the frequency domain range corresponding to each RAI field, the resource allocation indication mode corresponding to each RAI field, the number of bits of each RAI field, the minimum CCE aggregation level, the dedicated NR-PDCCH search space indication, and the like.

As another implementation manner, in the embodiment of the present invention, the base station may further carry at least one of the following configuration parameters in the second DCI signaling: the number of fields of the RAI fields, the frequency domain range corresponding to each RAI field, the subcarrier spacing used by the frequency domain range corresponding to each RAI field, the resource allocation indication mode corresponding to each RAI field, the bit number of each RAI field, the minimum CCE aggregation level and the dedicated NR-PDCCH search space indication parameter. And the terminal receives the second DCI signaling and analyzes the parameters carried in the second DCI signaling, so that the base station can indicate the related parameters.

In addition, regarding the implementation of the RAI field, similar to the prior art may be adopted, other ways of indicating a set of frequency domain resources may be redefined, and more subfields may be added to the RAI field to convey more information based on the prior art.

In this embodiment, the second DCI also carries a first indication field, which is used to indicate the existence of the third DCI signaling. Furthermore, the second DCI signaling may also carry information, such as search assistance for determining a search space of the third DCI signaling. Wherein, if there is a third DCI signaling, the third DCI signaling at least includes 1 RAI field, and each RAI field is used to indicate 1 group of consecutive or non-consecutive frequency domain resources.

As an implementation manner, only 1 RAI field (first RAI field) may be carried in the second DCI signaling. For example, the frequency domain range that can be indicated by the first RAI field is full operating bandwidth (e.g. 100MHz), and the first RAI field may employ a continuous or equally spaced discontinuous resource block allocation indication manner. In this way, since the second DCI only includes the determined number of RAI fields, the terminal can easily determine the number of bits of the first DCI, and the search processing of the terminal can be simplified.

Fig. 6 shows a schematic diagram of a second DCI signaling, and as shown in fig. 6, the second DCI signaling includes existing fields such as MSC/RV/DAI/Timing, and further includes a first RAI field and a first indication field. Wherein the first indication field is used to indicate the presence of third DCI signaling. Furthermore, the first indication field may further carry search assistance information for determining a third DCI signaling search space. In fig. 6, the first indication field indicates the presence information of the third DCI by joint coding, and some information that can help to determine the signaling search space of the third DCI. Table 2 gives an example of joint coding of 2 bits, each code corresponding to a kind of search assistance information.

Bit combination	Means of
		00	Absence of second DCI
01	There is a second DCI, and the second DCI CCE size is 1 × the first DCI CCE size
		10	There is a second DCI, and the second DCI CCE size is 2 × the first DCI CCE size
11	There is a second DCI, and the second DCI CCE size is 4 × the first DCI CCE size

TABLE 2

In the embodiment of the present invention, the base station and the terminal may agree in advance on the time-frequency resource relationship between the third DCI and the second DCI. And after the terminal blindly detects the second DCI, determining the time-frequency resource position of a third DCI according to the preset rule and the relevant indication information in the first indication field by the time-frequency resource position of the second DCI.

Fig. 7 shows an example of a time-frequency resource relationship between a third DCI and a second DCI, where in fig. 7A, the third DCI and the second DCI are multiplexed in an FDM manner; whereas in fig. 7B, the third DCI and the second DCI are multiplexed by TDM.

Specifically, in fig. 7A, the third DCI and the second DCI are in the same OFDM symbol, and the frequency domain resource locations of the two have a specific relationship. For example: and the starting frequency domain offset of the third DCI is the starting frequency domain offset of the second DCI plus the frequency domain resource size occupied by the second DCI.

Whereas in fig. 7B, the third DCI and the second DCI are in different OFDM symbols and the starting frequency domain offset is the same. In particular, the third DCI and the second DCI may be in adjacent OFDM symbols.

Through the preset rule, after the terminal blindly detects the second DCI, the starting time frequency resource position of the third DCI can be determined according to the preset rule through the time frequency resource position of the second DCI.

After the starting time-frequency resource position of the third DCI is obtained, the terminal needs to know the CCE size of the third DCI. Considering that the number of bits of the third DCI is related to the number of RAI fields included in the third DCI, and the base station dynamically selects to include several RAI fields in the third DCI when performing resource scheduling, it is difficult for both the base station and the terminal to determine how many bits may be included in the third DCI in advance. In order to reduce the overhead of blind detection of the third DCI by the terminal, preferably, in the embodiment of the present invention, the CCE size occupied by the third DCI is explicitly indicated in the first indication field of the first DCI. Namely, the search auxiliary information is the CCE size occupied by the third DCI, and at this time, the terminal only needs to demodulate and decode the third DCI signaling according to the CCE size indicated by the base station, thereby reducing the receiver processing overhead caused by blind detection of the CCE size.

In this embodiment of the present invention, the third DCI may include at least 1 RAI indication block, where each RAI indication block includes 1 RAI field, and each RAI indication block further includes at least one parameter of an end flag, a frequency domain range corresponding to the RAI field, a resource allocation indication manner, an HARQ process, Redundancy Version (RV) indication information, and a New Data transmission indication NDI (NDI: New Data Indicator) parameter;

fig. 8 shows an example of the third DCI according to the embodiment of the present invention. As shown in fig. 8, at least 1 RAI indication block is included in the third DCI. Some padding bits may also be included in the third DCI. Each RAI indication block includes 1 RAI field for indicating 1 set of contiguous or non-contiguous frequency domain resources.

Specifically, the RAI indication block may further include frequency domain range indication information for indicating the frequency domain range indicated by the current RAI field, and the specific indication form may be a Carrier indicator (cc indicator) field, for example, for indicating the several 20MHz bandwidth.

Each RAI indication block may further include indication information of a resource allocation indication manner, which is used to indicate a resource allocation indication manner used by the current RAI field. Of course, the base station may also configure the resource allocation indication manners corresponding to all RAI fields in the third DCI in advance through RRC signaling. For example, the base station is configured in advance through RRC signaling, and all RAI fields in the third DCI adopt a resource allocation indication mode of a bitmap type.

Each RAI indication block may further include an end flag for indicating whether there is another RAI indication block after the indication block. The end mark can be represented by 1 bit, or by some characteristic bit sequence to improve the reliability of correct detection.

In addition, each RAI indication block may further include parameters such as HARQ process indication and redundancy version indication. This involves several possible ways of use.

As shown in fig. 8, in mode 1, when all RAI fields in the second DCI and the third DCI indicate the same coding block (TB), only 1 HARQ process indication field, NDI indication, or redundancy version indication field may be included in the second DCI, and each RAI indication block does not need to include the HARQ process indication field, the NDI indication field, or redundancy version indication field. That is, at this time, the second DCI signaling includes a HARQ process, a redundancy version, and a new data transmission indicator (NDI) parameter; the third DCI signaling includes one or more RAI indication blocks, each RAI indication block includes an RAI field, each RAI indication block further includes at least one parameter of an end flag, a frequency domain range corresponding to the RAI field, and a resource allocation indication manner, and the third DCI does not include the HARQ process, the redundancy version, and a new data transmission indication (NDI) parameter. At this time, the terminal determines HARQ processes, redundancy versions, and new data transmission indication (NDI) parameters corresponding to all RAI fields in the second DCI signaling and the third DCI signaling according to the HARQ processes, redundancy versions, and new data transmission indication (NDI) parameters included in the second DCI signaling.

As in mode 2 shown in fig. 8, the RAI fields in the second DCI and the third DCI may correspond to the same or different TBs. At this time, each RAI indication block may include a HARQ process indication field, an NDI indication field, and a redundancy version indication field. Of course, each RAI indication block may include at least one parameter of an end flag, a frequency domain range corresponding to the RAI field, and a resource allocation indication manner.

Mode 1 above can reduce the number of bits used for DCI signaling, and mode 2 above can improve the terminal processing robustness, that is, when the terminal fails to demodulate part of the RAI indication block, it is also possible to correctly demodulate other RAI indication blocks, and correctly receive data at the resource location indicated by the RAI indication block that can be correctly demodulated.

In addition, if all RAI fields in the third DCI signaling indicate the same transport block TB, at this time, the third DCI signaling may include one or more RAI indication blocks, each RAI indication block further includes at least one parameter of an end flag, a frequency domain range corresponding to the RAI field, and a resource allocation indication manner, and the third DCI signaling may further include one HARQ process, a redundancy version, and a new data transmission indication NDI parameter, and it is not necessary that each RAI indication block includes the HARQ process, the redundancy version, and the new data transmission indication (NDI) parameter. At this time, the terminal may determine, according to the HARQ process, the redundancy version, and the new data transmission indication NDI parameter included in the third DCI signaling, the HARQ process, the redundancy version, and the new data transmission indication NDI parameter corresponding to the same transport block TB. For example, a typical application scenario for the above case is: for some terminals which are not sensitive to the peak rate (such as terminals with larger working bandwidth), the base station only uses the second DCI to perform resource scheduling; and for other terminals (such as terminals with larger working bandwidth) sensitive to the peak rate, the base station performs resource scheduling through the second DCI and the third DCI simultaneously to schedule more frequency domain resources for the terminal.

To sum up, the method for indicating resource allocation provided in the embodiment of the present invention provides a method for including multiple RAI fields in DL/UL grant DCI, where each RAI field indicates a segment of continuous or discontinuous logical resources, for the problem that an NR system supports multiple kinds of working bandwidth multiplexing, which may result in resource fragmentation and reduce the effectiveness of large bandwidth scheduling. In particular, in order to reduce the terminal blind detection overhead, the embodiment of the present invention further provides an indication manner using a 2-level DCI, where a default resource indication manner is adopted in the first-level DCI, a DCI with a certain number of bits may be adopted, and the second-level DCI is optional and has a variable length for indicating an additional RAI field. For typical applications, the base station schedules large bandwidth resources using only first-level DCI; for peak rate sensitive users, the base station may use the second-level DCI to schedule additional transmission resources, so the method according to the embodiment of the present invention may achieve better balance and trade-off in terms of resource indication effectiveness and terminal detection complexity.

Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the method for resource allocation indication in any of the above method embodiments.

Based on the above method, an embodiment of the present invention further provides a base station, as shown in fig. 9, where the base station includes:

a first sending unit 91, configured to send a first downlink control information DCI signaling to a terminal, where the first DCI signaling carries at least two resource block allocation indication RAI fields, and the RAI fields are used to indicate a group of frequency domain resources.

Here, the first DCI signaling may be for scheduling shared physical resources, and each of the RAI fields may be for indicating a set of contiguous or non-contiguous frequency domain resources.

An embodiment of the present invention further provides a base station, as shown in fig. 10, where the base station includes:

a second sending unit 101, configured to send a second DCI signaling to a terminal, where the second DCI signaling carries at least one RAI field and a first indication field for indicating whether a third DCI signaling exists; and the number of the first and second groups,

a third sending unit 102, configured to send, to the terminal, a third DCI signaling for indicating a shared physical resource when the third DCI signaling exists, where the third DCI signaling carries one or more RAI fields.

Here, the second DCI signaling may be used to schedule the shared physical resources, and each of the RAI fields may be used to indicate a set of contiguous or non-contiguous frequency domain resources.

Preferably, the base station shown in fig. 9 or fig. 10 may further include:

a configuration unit, configured to send a configuration parameter of a DCI signaling to a terminal through at least one of a system message and a radio resource control signaling RRC signaling, where the configuration parameter of the DCI signaling includes at least one of the following parameters: the number of fields of the RAI fields, the frequency domain range corresponding to each RAI field, the subcarrier spacing used by the frequency domain range corresponding to each RAI field, the resource allocation indication mode corresponding to each RAI field, the bit number of each RAI field, the minimum CCE aggregation level and the dedicated NR-PDCCH search space indication parameter.

Preferably, in the base station shown in fig. 9 or fig. 10, the first/second DCI signaling further carries at least one of the following configuration parameters: the number of fields of the RAI fields, the frequency domain range corresponding to each RAI field, the subcarrier spacing used by the frequency domain range corresponding to each RAI field, the resource allocation indication mode corresponding to each RAI field, the bit number of each RAI field, the minimum CCE aggregation level and the dedicated NR-PDCCH search space indication parameter.

Preferably, in the base station shown in fig. 9 or fig. 10, the shared physical resource is a PDSCH resource or a PUSCH resource.

Preferably, in the base station shown in fig. 10, the first indication field further carries search auxiliary information for determining a third DCI signaling search space.

Preferably, in the base station shown in fig. 10, the first indication field further carries size information of a CCE occupied by the third DCI signaling.

Preferably, in the base station shown in fig. 10, the third DCI signaling includes one or more RAI indication blocks, each RAI indication block includes one RAI field, and each RAI indication block further includes at least one parameter of an end flag, a frequency domain range corresponding to the RAI field, a resource allocation indication manner, an HARQ process, a redundancy version, and a new data transmission indication NDI parameter.

Preferably, in the base station shown in fig. 10, all RAI fields in the second DCI signaling and the third DCI signaling indicate the same transport block TB; the second DCI signaling comprises an HARQ process, a redundancy version and a new data transmission indication (ND) parameter; the third DCI signaling includes one or more RAI indication blocks, each RAI indication block includes one RAI field, and each RAI indication block further includes at least one parameter of an end flag, a frequency domain range corresponding to the RAI field, and a resource allocation indication manner.

Preferably, in the base station shown in fig. 10, all RAI fields in the third DCI signaling indicate the same transport block TB; the third DCI signaling includes one or more RAI indication blocks, each RAI indication block further includes at least one parameter of an end flag, a frequency domain range corresponding to an RAI field, and a resource allocation indication manner, and the third DCI signaling further includes a HARQ process, a redundancy version, and a new data transmission indication NDI parameter.

Preferably, in the base station shown in fig. 10, a predetermined location relationship exists between the time-frequency resources of the second DCI signaling and the time-frequency resources of the third DCI signaling; and the second sending unit is further used for determining the time-frequency position of a third DCI signaling according to the time-frequency position of the second DCI signaling and the predetermined position relation and sending the third DCI signaling.

In order to better achieve the above object, as shown in fig. 11, an embodiment of the present invention further provides a base station, where the base station includes: a processor 1100; a memory 1120 connected to the processor 1100 through a bus interface, and a transceiver 1110 connected to the processor 1100 through a bus interface; the memory 1120 is used for storing programs and data used by the processor in performing operations; transmitting data information or pilot frequency through the transceiver 1110, and receiving an uplink control channel through the transceiver 1110; when the processor 1100 calls and executes the programs and data stored in the memory 1120, in particular,

the processor 1100 is configured to read programs from the memory 1120, and is specifically configured to perform the following functions: and sending a first DCI signaling for scheduling the shared physical resources to a terminal, wherein the first DCI signaling carries at least two resource block allocation indication RAI fields, and each RAI field is used for indicating a group of continuous or discontinuous frequency domain resources.

Alternatively, the processor 1100 is configured to read a program in the memory 1120, and specifically is configured to perform the following functions: sending a second DCI signaling for indicating the shared physical resources to the terminal, wherein the second DCI signaling carries at least one RAI field and a first indication field for indicating whether a third DCI signaling exists or not; and sending a third DCI signaling for indicating the shared physical resource to the terminal when the third DCI signaling exists, wherein the third DCI signaling carries one or more RAI fields.

A transceiver 1110 for receiving and transmitting data under the control of the processor 1100.

Where in fig. 11, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1100, and various circuits, represented by memory 1120, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1110 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 may store data used by the processor 1100 in performing operations.

Specifically, the processor 1100 is further configured to send, to the terminal, the configuration parameter of the first/second DCI signaling through at least one of a system message and radio resource control signaling RRC signaling before sending the first/second DCI signaling, where the configuration parameter of the first/second DCI signaling includes at least one of the following parameters: the number of fields of the RAI fields, the frequency domain range corresponding to each RAI field, the subcarrier spacing used by the frequency domain range corresponding to each RAI field, the resource allocation indication mode corresponding to each RAI field, the bit number of each RAI field, the minimum CCE aggregation level and the dedicated NR-PDCCH search space indication parameter.

Referring to fig. 12, an embodiment of the present invention provides a terminal, including:

a first receiving unit 121, configured to receive a first DCI signaling sent by a network, where the first DCI signaling carries at least two resource block allocation indication RAI fields, and the RAI fields are used to indicate a group of frequency domain resources;

a first resource determining unit 122, configured to determine the shared physical resource scheduled this time according to the RAI field in the first DCI signaling.

Referring to fig. 13, another terminal provided in the embodiment of the present invention includes:

a second receiving unit 131, configured to receive a second DCI signaling sent by a network, where the second DCI signaling carries at least one RAI field and a first indication field for indicating whether a third DCI signaling exists; and the number of the first and second groups,

a third receiving unit 132, configured to receive a third DCI signaling sent by a network when the third DCI signaling exists, where the third DCI signaling carries one or more RAI fields;

a second resource determining unit 133, configured to determine the resource scheduled this time according to the RAI fields in the second DCI signaling and the third DCI signaling.

Here, the second DCI signaling may be used to indicate a shared physical resource, and the third DCI signaling may also be used to indicate a shared physical resource.

Preferably, the terminal shown in fig. 12 or 13 further includes:

a configuration receiving unit, configured to receive a configuration parameter of a DCI signaling sent by a base station through at least one of a system message and a radio resource control signaling RRC signaling, where the configuration parameter of the DCI signaling includes at least one of the following parameters: the number of fields of the RAI fields, the frequency domain range corresponding to each RAI field, the subcarrier spacing used by the frequency domain range corresponding to each RAI field, the resource allocation indication mode corresponding to each RAI field, the bit number of each RAI field, the minimum CCE aggregation level and the dedicated NR-PDCCH search space indication parameter.

Preferably, in the terminal shown in fig. 12 or fig. 13, the second DCI signaling further carries at least one of the following configuration parameters: the number of fields of the RAI fields, the frequency domain range corresponding to each RAI field, the subcarrier spacing used by the frequency domain range corresponding to each RAI field, the resource allocation indication mode corresponding to each RAI field, the bit number of each RAI field, the minimum CCE aggregation level and the dedicated NR-PDCCH search space indication parameter.

Preferably, in the terminal shown in fig. 12 or 13, the shared physical resource is a PDSCH resource or a PUSCH resource.

Preferably, in the terminal shown in fig. 13, the second resource determining unit is further configured to determine, according to the second DCI signaling, a resource that is allocated to the terminal by the network, such as a shared physical resource, when a third DCI signaling does not exist; and when the third DCI signaling exists, determining resources, such as shared physical resources, allocated to the terminal by the network according to the second DCI signaling and the third DCI signaling.

Preferably, in the terminal shown in fig. 13, the first indication field further carries search auxiliary information for determining a third DCI signaling search space; the second receiving unit includes:

and the searching unit is used for determining a third DCI signaling searching space according to the searching auxiliary information, and searching the third DCI in the determined searching space to obtain the RAI field carried in the third DCI signaling searching space.

Preferably, in the terminal shown in fig. 13, the first indication field further carries size information of a CCE occupied by the third DCI.

Preferably, in the terminal shown in fig. 13, the third DCI signaling includes one or more RAI indication blocks, each RAI indication block includes one RAI field, and each RAI indication block further includes at least one parameter of an end flag, a frequency domain range corresponding to the RAI field, a resource allocation indication manner, an HARQ process, a redundancy version, and a new data transmission indication NDI parameter.

Preferably, in the terminal shown in fig. 13, all RAI fields in the second DCI signaling and the third DCI signaling indicate the same transport block TB; the second DCI signaling comprises an HARQ process, a redundancy version and a new data transmission indication (ND) parameter; the third DCI signaling includes one or more RAI indication blocks, each RAI indication block includes an RAI field, and each RAI indication block further includes at least one parameter of an end flag, a frequency domain range corresponding to the RAI field, and a resource allocation indication manner; the terminal further comprises:

and the first parameter determining unit is used for determining the HARQ processes, redundancy versions and new data transmission indication ND parameters corresponding to all RAI fields in the second DCI signaling and the third DCI signaling according to the HARQ processes, redundancy versions and new data transmission indication ND parameters included in the second DCI signaling.

Preferably, in the terminal shown in fig. 13, all RAI fields in the third DCI signaling indicate the same transport block TB; the third DCI signaling includes one or more RAI indication blocks, each RAI indication block further includes at least one parameter of an end flag, a frequency domain range corresponding to an RAI field, and a resource allocation indication manner, and the third DCI signaling further includes a HARQ process, a redundancy version, and a new data transmission indication NDI parameter; the second receiving unit includes:

and a parameter determining unit, configured to determine, according to the HARQ process, the redundancy version, and the new data transmission indication ND parameter included in the third DCI signaling, the HARQ process, the redundancy version, and the new data transmission indication ND parameter corresponding to the same transport block TB.

Preferably, in the terminal shown in fig. 13, a predetermined location relationship exists between the time-frequency resources of the second DCI signaling and the time-frequency resources of the third DCI signaling; the second receiving unit further determines a time-frequency position of a third DCI signaling according to the time-frequency position of the second DCI signaling and the predetermined position relationship, and receives the third DCI signaling.

Referring to fig. 14, fig. 14 is a structural diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 14, the electronic device includes: at least one processor 1401, memory 1402, at least one network interface 1404, and a user interface 1403. The various components in the electronic device are coupled together by a bus system 1405. It will be appreciated that bus system 1405 is used to enable communications among the components connected. The bus system 1405 includes a power bus, a control bus, and a status signal bus, in addition to the data bus. For clarity of illustration, however, the various buses are labeled as bus system 1405 in fig. 14.

The user interface 1403 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, track ball), a touch pad, or a touch screen.

It will be appreciated that the memory 1402 in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable ROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration, and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous D RAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SD RAM, ddr SDRAM), Enhanced Synchronous SD RAM (ESDRAM), Synchronous link Dynamic random access memory (Synchronous link D RAM, SLDRAM), and Direct memory bus random access memory (DRRAM). The memory 1402 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 1402 stores elements, executable modules or data structures, or a subset thereof, or an expanded set thereof as follows: an operating system 14021 and application programs 14022.

The operating system 14021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 14022 contains various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. A program implementing a method according to an embodiment of the invention may be included in the application 14022.

In the embodiment of the present invention, the processor 1401 is configured to, by calling a program or an instruction stored in the memory 1402, specifically, a program or an instruction stored in the application 14022: receiving a first Downlink Control Information (DCI) signaling which is sent by a network and used for scheduling shared physical resources, wherein the first DCI signaling carries at least two resource block allocation indication (RAI) fields, and each RAI field is used for indicating a group of continuous or discontinuous frequency domain resources; and determining the shared physical resource scheduled this time according to the RAI field in the first DCI signaling. Alternatively, the processor 1401 is configured to: receiving a second DCI signaling which is sent by a network and used for indicating shared physical resources, wherein the second DCI signaling carries at least one RAI field and a first indication field used for indicating whether a third DCI signaling exists or not; when a third DCI signaling exists, receiving the third DCI signaling which is sent by a network and used for indicating the shared physical resource, wherein the third DCI signaling carries one or more RAI fields; and determining the shared physical resource scheduled this time according to the RAI fields in the second DCI signaling and the third DCI signaling.

Optionally, the processor 1401 is further configured to: before receiving the first/second DCI signaling, receiving configuration parameters of the DCI signaling sent by a base station through at least one of a system message and radio resource control signaling (RRC) signaling, wherein the configuration parameters of the DCI signaling comprise at least one of the following parameters: the number of fields of the RAI fields, the frequency domain range corresponding to each RAI field, the subcarrier spacing used by the frequency domain range corresponding to each RAI field, the resource allocation indication mode corresponding to each RAI field, the bit number of each RAI field, the minimum CCE aggregation level and the dedicated NR-PDCCH search space indication parameter.

Optionally, the processor 1401 is further configured to: when a third DCI signaling does not exist, determining shared physical resources allocated to the terminal by the network according to the second DCI signaling; and when the third DCI signaling exists, determining the shared physical resources allocated to the terminal by the network according to the second DCI signaling and the third DCI signaling.

Optionally, the first indication field further carries search auxiliary information for determining a third DCI signaling search space; processor 1401 is further configured to: and determining a third DCI signaling search space according to the search auxiliary information, and searching the third DCI in the determined search space to obtain an RAI field carried in the third DCI signaling search space.

Optionally, all RAI fields in the second DCI signaling and the third DCI signaling indicate the same transport block TB; the second DCI signaling comprises an HARQ process, a redundancy version and a new data transmission indication (ND) parameter; the third DCI signaling includes one or more RAI indication blocks, each RAI indication block includes an RAI field, and each RAI indication block further includes at least one parameter of an end flag, a frequency domain range corresponding to the RAI field, and a resource allocation indication manner; processor 1401 is further configured to determine, according to the HARQ process, redundancy version, and new data transmission indication ND parameter included in the second DCI signaling, the HARQ process, redundancy version, and new data transmission indication ND parameter corresponding to all RAI fields in the second DCI signaling and the third DCI signaling.

Optionally, all RAI fields in the third DCI signaling indicate the same transport block TB; the third DCI signaling includes one or more RAI indication blocks, each RAI indication block further includes at least one parameter of an end flag, a frequency domain range corresponding to an RAI field, and a resource allocation indication manner, and the third DCI signaling further includes a HARQ process, a redundancy version, and a new data transmission indication NDI parameter; processor 1401 is further configured to: and determining HARQ processes, redundancy versions and new data transmission indication ND parameters corresponding to all RAI fields in the third DCI signaling according to the HARQ processes, redundancy versions and new data transmission indication ND parameters in the third DCI signaling.

Optionally, a predetermined location relationship exists between the time-frequency resources of the second DCI signaling and the time-frequency resources of the third DCI signaling; processor 1401 is further configured to: and further determining the time-frequency position of a third DCI signaling according to the time-frequency position of the second DCI signaling and the predetermined position relation, and receiving the third DCI signaling.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method of resource allocation indication, comprising:

a base station sends a first Downlink Control Information (DCI) signaling to a terminal, wherein the first DCI signaling carries at least two resource block allocation indication (RAI) fields, and the RAI fields are used for indicating a group of frequency domain resources; or, the base station sends a second DCI signaling to the terminal, wherein the second DCI signaling carries at least one RAI field and a first indication field for indicating whether a third DCI signaling exists; and when a third DCI signaling exists, sending the third DCI signaling to the terminal, wherein the third DCI signaling carries one or more RAI fields; wherein, different RAI fields adopt the same or different resource block allocation indication modes to indicate the resources of the base station.

2. The method of claim 1,

prior to transmitting the first DCI signaling or the second DCI signaling, the method further comprises: sending the configuration parameters of the DCI signaling to a terminal, wherein the configuration parameters of the DCI signaling comprise at least one of the following parameters: the number of fields of the RAI field, the frequency domain range corresponding to the RAI field, the subcarrier spacing used by the frequency domain range corresponding to the RAI field, the resource allocation indication mode corresponding to the RAI field, the bit number of the RAI field, the minimum CCE aggregation level and the special NR-PDCCH search space indication parameter;

or, the first DCI signaling or the second DCI signaling further carries at least one of the following configuration parameters: the number of fields of the RAI field, the frequency domain range corresponding to the RAI field, the subcarrier spacing used by the frequency domain range corresponding to the RAI field, the resource allocation indication mode corresponding to the RAI field, the bit number of the RAI field, the minimum CCE aggregation level and the dedicated NR-PDCCH search space indication parameter.

3. The method of claim 1, wherein the first indication field further carries search assistance information for determining a search space of a third DCI signaling, or wherein the first indication field further carries size information of a CCE occupied by the third DCI signaling.

4. The method of claim 1,

the third DCI signaling includes one or more RAI indication blocks, each RAI indication block includes an RAI field, and the RAI indication block further includes at least one of an end flag, a frequency domain range corresponding to the RAI field, a resource allocation indication mode, an HARQ process, a redundancy version, and a new data transmission indication NDI parameter;

alternatively, the first and second electrodes may be,

all RAI fields in the third DCI signaling indicate the same transport block TB; the third DCI signaling includes one or more RAI indication blocks, where the RAI indication block further includes at least one parameter of an end flag, a frequency domain range corresponding to an RAI field, and a resource allocation indication manner, and the third DCI signaling further includes a HARQ process, a redundancy version, and a new data transmission indication NDI parameter.

5. A method of resource allocation indication, comprising:

a terminal receives a first Downlink Control Information (DCI) signaling sent by a base station, wherein the first DCI signaling carries at least two resource block allocation indication (RAI) fields, and the RAI fields are used for indicating a group of frequency domain resources; determining the resource scheduled this time according to the RAI field in the first DCI signaling; or, the terminal receives a second DCI signaling sent by the base station, where the second DCI signaling carries at least one RAI field and a first indication field for indicating whether a third DCI signaling exists; and receiving a third DCI signaling sent by a network when the third DCI signaling exists, wherein the third DCI signaling carries one or more RAI fields; determining the resource scheduled this time according to the RAI fields in the second DCI signaling and the third DCI signaling; wherein, different RAI fields adopt the same or different resource block allocation indication modes to indicate the resources of the same base station.

6. The method of claim 5,

prior to receiving the first DCI signaling or the second DCI signaling, the method further comprises: receiving configuration parameters of DCI signaling sent by a base station, wherein the configuration parameters of the DCI signaling comprise at least one of the following parameters: the number of fields of the RAI field, the frequency domain range corresponding to the RAI field, the subcarrier spacing used by the frequency domain range corresponding to the RAI field, the resource allocation indication mode corresponding to the RAI field, the bit number of the RAI field, the minimum CCE aggregation level and the special NR-PDCCH search space indication parameter;

or, the first DCI signaling further carries at least one of the following configuration parameters: the number of fields of the RAI field, the frequency domain range corresponding to the RAI field, the subcarrier spacing used by the frequency domain range corresponding to the RAI field, the resource allocation indication mode corresponding to the RAI field, the bit number of the RAI field, the minimum CCE aggregation level and the dedicated NR-PDCCH search space indication parameter.

7. The method of claim 5, further comprising:

when the third DCI signaling does not exist, determining resources allocated to the terminal by the network according to the second DCI signaling;

and when the third DCI signaling exists, determining the resources allocated to the terminal by the network according to the second DCI signaling and the third DCI signaling.

8. The method of claim 5, wherein the first indication field further carries search assistance information for determining a third DCI signaling search space;

the method further comprises the following steps:

and determining a third DCI signaling search space according to the search auxiliary information, and searching the third DCI in the determined search space to obtain an RAI field carried in the third DCI signaling search space.

9. The method of claim 8, wherein the first indication field further carries size information of CCEs occupied by a third DCI.

10. The method of claim 5,

alternatively, the first and second electrodes may be,

all RAI fields in the third DCI signaling indicate the same transport block TB; the third DCI signaling includes one or more RAI indication blocks, where the RAI indication block further includes at least one parameter of an end flag, a frequency domain range corresponding to an RAI field, and a resource allocation indication manner, and the third DCI signaling further includes a HARQ process, a redundancy version, and a new data transmission indication NDI parameter;

the method further comprises the following steps:

and determining the HARQ process, the redundancy version and the new data transmission indication NDI parameter corresponding to the same transport block TB according to the HARQ process, the redundancy version and the new data transmission indication NDI parameter included in the third DCI signaling.

11. A base station, comprising:

or, a second sending unit, configured to send a second DCI signaling to the terminal, where the second DCI signaling carries at least one RAI field and a first indication field for indicating whether a third DCI signaling exists; and a third sending unit, configured to send a third DCI signaling to the terminal when the third DCI signaling exists, where the third DCI signaling carries one or more RAI fields;

wherein, different RAI fields adopt the same or different resource block allocation indication modes to indicate the resources of the base station.

12. The base station of claim 11, further comprising:

a configuration unit, configured to send a configuration parameter of a DCI signaling to a terminal, where the configuration parameter of the DCI signaling includes at least one of the following parameters: the number of fields of the RAI field, the frequency domain range corresponding to the RAI field, the subcarrier spacing used by the frequency domain range corresponding to the RAI field, the resource allocation indication mode corresponding to the RAI field, the bit number of the RAI field, the minimum CCE aggregation level and the special NR-PDCCH search space indication parameter;

13. The base station of claim 11, wherein the first indication field further carries search assistance information for determining a search space of a third DCI signaling, or wherein the first indication field further carries size information of a CCE occupied by the third DCI signaling.

14. The base station of claim 11,

or all RAI fields in the third DCI signaling indicate the same transport block, TB;

the third DCI signaling includes one or more RAI indication blocks, where the RAI indication block further includes at least one parameter of an end flag, a frequency domain range corresponding to an RAI field, and a resource allocation indication manner, and the third DCI signaling further includes a HARQ process, a redundancy version, and a new data transmission indication NDI parameter.

15. A terminal, comprising:

a first receiving unit, configured to receive a first downlink control information DCI signaling sent by a base station, where the first DCI signaling carries at least two resource block allocation indication RAI fields, and the RAI fields are used to indicate a group of continuous or discontinuous frequency domain resources; the first resource determining unit is used for determining the resource scheduled this time according to the RAI field in the first DCI signaling;

or comprises the following steps:

a second receiving unit, configured to receive a second DCI signaling sent by the base station, where the second DCI signaling carries at least one RAI field and a first indication field for indicating whether a third DCI signaling exists; and the number of the first and second groups,

a second resource determining unit, configured to determine the resource scheduled this time according to the RAI field in the second DCI signaling and the third DCI signaling;

wherein, different RAI fields adopt the same or different resource block allocation indication modes to indicate the resources of the same base station.

16. The terminal of claim 15, further comprising:

a configuration receiving unit, configured to receive a configuration parameter of a DCI signaling sent by a base station, where the configuration parameter of the DCI signaling includes at least one of the following parameters: the number of fields of the RAI field, the frequency domain range corresponding to the RAI field, the subcarrier spacing used by the frequency domain range corresponding to the RAI field, the resource allocation indication mode corresponding to the RAI field, the bit number of the RAI field, the minimum CCE aggregation level and the special NR-PDCCH search space indication parameter;

17. The terminal of claim 15,

the second resource determining unit is further configured to determine, according to the second DCI signaling, a resource allocated to the terminal by the network when the third DCI signaling does not exist; and when the third DCI signaling exists, determining the resources allocated to the terminal by the network according to the second DCI signaling and the third DCI signaling.

18. The terminal of claim 15, wherein the first indication field further carries search assistance information for determining a third DCI signaling search space;

the third receiving unit includes:

and the searching unit is used for determining a third DCI signaling searching space according to the searching auxiliary information, and searching the third DCI signaling in the determined searching space to obtain the RAI field carried in the third DCI signaling searching space.

19. The terminal of claim 18, wherein the first indication field further carries size information of a CCE occupied by a third DCI signaling.

20. The terminal of claim 15,

or all RAI fields in the third DCI signaling indicate the same transport block, TB; the third DCI signaling includes one or more RAI indication blocks, where the RAI indication block further includes at least one parameter of an end flag, a frequency domain range corresponding to an RAI field, and a resource allocation indication manner, and the third DCI signaling further includes a HARQ process, a redundancy version, and a new data transmission indication NDI parameter; the third receiving unit includes:

and a parameter determining unit, configured to determine, according to the HARQ process, the redundancy version, and the new data transmission indication NDI parameter included in the third DCI signaling, the HARQ process, the redundancy version, and the new data transmission indication NDI parameter corresponding to the same transport block TB.