CN109391394B

CN109391394B - PRG implicit indication method and device, storage medium, terminal and base station

Info

Publication number: CN109391394B
Application number: CN201710675673.0A
Authority: CN
Inventors: 苗润泉; 黄甦; 王化磊
Original assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Current assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Priority date: 2017-08-09
Filing date: 2017-08-09
Publication date: 2021-07-27
Anticipated expiration: 2037-08-09
Also published as: CN109391394A

Abstract

A PRG implicit indication method and device, a storage medium, a terminal and a base station are provided, the method comprises the following steps: receiving downlink control information, wherein the downlink control information at least comprises an MCS index value; searching a preset mapping table according to the MCS index value, wherein the preset mapping table is at least used for recording the mapping relation between the MCS index value and the PRG size; and determining the PRG size according to the search result. The scheme provided by the invention can indicate the size of the PRG in an implicit mode, thereby better reducing the signaling overhead.

Description

PRG implicit indication method and device, storage medium, terminal and base station

Technical Field

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

Background

According to the latest protocol of the third Generation Partnership Project (3rd Generation Partnership Project, 3GPP), the size of a Downlink Precoding Resource Block Group (DL-PRG) that can be configured by a base station (e.g. a 5G base station, i.e. a nodebs, gNB) is determined. Specifically, according to the specification of the latest protocol, the base station may mainly select one of four values {2,4,8,16} as the size of the PRG configured to the User Equipment (UE), where the value selected by the base station is the size of the PRG (such as the DL-PRG) allocated by the User Equipment during downlink precoding-based transmission. Future protocols may also define the value 1 as the PRG size that allows the base station to select.

However, existing protocols do not specify how to indicate to a user equipment the size of the PRG configured to the user equipment.

Disclosure of Invention

The technical problem solved by the invention is how to indicate the PRG size in an implicit mode so as to more effectively reduce the signaling overhead.

To solve the foregoing technical problem, an embodiment of the present invention provides a PRG implicit indication method, including: receiving downlink control information, wherein the downlink control information at least comprises an MCS index value; searching a preset mapping table according to the MCS index value, wherein the preset mapping table is at least used for recording the mapping relation between the MCS index value and the PRG size; and determining the PRG size according to the search result.

Optionally, the preset mapping table includes at least one MCS index value and a corresponding PRG size.

Optionally, the PRG size corresponding to the MCS index value is at least selected from a standard number series, where the standard number series is {1,2,4,8,16 }.

Optionally, the PRG size corresponding to the MCS index value is selected from predefined values of the base station.

Optionally, the base station predefined value is received from a high layer signaling of the base station in advance.

Optionally, the PRG size corresponding to the MCS index value is further selected from a preset upper limit value.

Optionally, the preset mapping table is predetermined by the base station and sent through a high-layer signaling.

Optionally, the preset mapping table is shared with the base station in advance.

Optionally, the determining the size of the PRG according to the search result includes: and determining the smaller value of the search result and a preset upper limit value as the PRG size.

Optionally, the preset upper limit is a continuous scheduling bandwidth.

An embodiment of the present invention further provides a PRG implicit indication apparatus, including: a receiving module, configured to receive downlink control information, where the downlink control information at least includes an MCS index value; the searching module is used for searching a preset mapping table according to the MCS index value, and the preset mapping table is at least used for recording the mapping relation between the MCS index value and the PRG size; and the determining module is used for determining the size of the PRG according to the searching result.

Optionally, the determining module includes: and the determining submodule is used for determining the smaller value of the search result and a preset upper limit value as the PRG size.

Optionally, the preset upper limit is a continuous scheduling bandwidth.

The embodiment of the invention also provides a PRG implicit indication method, which comprises the following steps: searching a preset mapping table according to the size of the PRG to determine an MCS index value corresponding to the size of the PRG; sending downlink control information, wherein the downlink control information at least comprises the MCS index value; wherein, the preset mapping table is at least used for recording the mapping relationship between the MCS index value and the PRG size.

Optionally, the predefined value of the base station is indicated in advance through a high layer signaling.

Optionally, the preset upper limit is a continuous scheduling bandwidth.

Optionally, the preset mapping table is predetermined and sent through a high layer signaling.

Optionally, the preset mapping table is shared with the user equipment in advance.

An embodiment of the present invention further provides a PRG implicit indication apparatus, including: the searching module is used for searching a preset mapping table according to the PRG size so as to determine an MCS index value corresponding to the PRG size; a sending module, configured to send downlink control information, where the downlink control information at least includes the MCS index value; wherein, the preset mapping table is at least used for recording the mapping relationship between the MCS index value and the PRG size.

Optionally, the preset upper limit is a continuous scheduling bandwidth.

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

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

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

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

for a user equipment side, receiving downlink control information, wherein the downlink control information at least comprises an MCS index value; searching a preset mapping table according to the MCS index value, wherein the preset mapping table is at least used for recording the mapping relation between the MCS index value and the PRG size; and determining the PRG size according to the search result. Compared with the prior art that a Bit (Bit) needs to be additionally added in a signaling (such as downlink control information) to indicate the size of the PRG, the technical solution of the embodiment of the present invention multiplexes the original MCS index value of the downlink control channel, so that the user equipment can conveniently and quickly determine the size of the PRG indicated by the base station according to the mapping relationship between the MCS index value and the size of the PRG recorded in the preset mapping table, thereby effectively reducing the indication overhead (also referred to as signaling overhead) of the base station. Specifically, based on the PRG indication scheme adopted in the embodiment of the present invention, no additional signaling bit is required, and the user equipment can determine the size of the PRG allocated by the base station according to the new content implied by the original MCS index value in the downlink control information (i.e., based on the corresponding relationship between the size of the PRG and the preset mapping table record).

Further, for the base station side, searching a preset mapping table according to the PRG size to determine an MCS index value corresponding to the PRG size; sending downlink control information, wherein the downlink control information at least comprises the MCS index value; wherein, the preset mapping table is at least used for recording the mapping relationship between the MCS index value and the PRG size. Those skilled in the art understand that the base station adopting the technical solution of the embodiment of the present invention can multiplex the existing MCS index value of the downlink control channel, thereby implicitly indicating the PRG size allocated to the user equipment. Because no bit is additionally added in the downlink control information and no other indication signaling is additionally sent, the base station adopting the technical scheme of the embodiment of the invention effectively reduces the indication overhead.

Drawings

Fig. 1 is a flowchart of a PRG implicit indication method according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a PRG implicit indication apparatus according to a second embodiment of the present invention;

fig. 3 is a flowchart of a PRG implicit indication method according to a third embodiment of the present invention;

fig. 4 is a schematic structural diagram of a PRG implicit indication apparatus according to a fourth embodiment of the present invention;

fig. 5 is a signaling interaction diagram of an exemplary application scenario in which an embodiment of the present invention is employed.

Detailed Description

Those skilled in the art understand that, as mentioned in the background art, the existing scheme has not explicitly indicated how to indicate a Precoding Resource Block Group (PRG) size (size) to the user equipment, where the PRG size may be a Downlink PRG (DL-PRG) size. If an explicit indication manner is adopted, for example, 1-Bit (Bit) overhead is added to Downlink Control Information (DCI), although the added bits are not many, signaling overhead may still be increased, and especially when the channel condition is not good, the signaling transmission efficiency between the base station and the ue may be seriously affected. Therefore, an implicit indication method is needed to reduce the indication overhead (also referred to as signaling overhead) of the base station.

An existing implicit indication Scheme is to bind a PRG size with a Transmission Scheme (TS) of a Multiple-Input Multiple-Output (MIMO) system, that is, predefine different PRG sizes for different TSs, and achieve the purpose of implicit indication by associating the PRG size with the TS. However, currently, only two transmission modes are supported by the downlink of New Radio (NR), namely closed-loop transmission (denoted as TS1) and open-loop/half-open-loop transmission (denoted as TS2), and TS2 does not show support in the latest protocol, which results in that the available indication information is too little to indicate all the alternative values of PRG (i.e., {2,4,8,16} or {1,2,4,8,16} determined by the protocol).

Another existing implicit indication scheme is a PRG size implicit indication scheme implemented based on a Demodulation Reference Signal (DMRS), that is, the PRG size is implicitly indicated according to a frequency domain density of the DMRS. However, according to the specification of the latest protocol, the configuration of the DMRS in the frequency domain is basically fixed, and the base station cannot adjust the configuration of the DMRS in the following (as in practical applications), and the configuration options are not too many, which results in that the base station cannot indicate all alternative values of the PRG through the configuration of the DMRS.

The inventor of the present application finds, through analysis, that the configuration option number of the TS and the DMRS cannot be reasonably matched with the number of the candidate values of the PRG size, so that although the configuration of the TS and the DMRS can reflect the channel state to a certain extent, all the candidate values of the PRG size cannot be fully and implicitly indicated, and therefore, in actual application, the user equipment cannot clearly and uniquely determine the PRG size indicated by the base station based on the TS or the DMRS.

In order to solve the technical problem, for a user equipment side, receiving downlink control information, wherein the downlink control information at least comprises an MCS index value; searching a preset mapping table according to the MCS index value, wherein the preset mapping table is at least used for recording the mapping relation between the MCS index value and the PRG size; and determining the PRG size according to the search result. Those skilled in the art understand that, in the technical solution of the embodiment of the present invention, the original MCS index value of the downlink control channel is multiplexed, so that the user equipment can conveniently and quickly determine the PRG size indicated by the base station according to the mapping relationship between the MCS index value and the PRG size recorded in the preset mapping table, thereby effectively reducing the indication overhead (also referred to as signaling overhead) of the base station. Specifically, based on the PRG indication scheme adopted in the embodiment of the present invention, no additional signaling bit is required, and the user equipment can determine the size of the PRG allocated by the base station according to the new content implied by the original MCS index value in the downlink control information (i.e., based on the corresponding relationship between the size of the PRG and the preset mapping table record).

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

Fig. 1 is a flowchart of a PRG implicit indication method according to a first embodiment of the present invention. The PRG may be an english abbreviation of Precoding Resource Block Group (Precoding Resource Block Group); in practical application, the PRG may include a Downlink PRG (DL-PRG for short), and a User Equipment (User Equipment, UE for short) may determine a size (size) of the PRG configured by the base station when the Downlink is based on precoding transmission by using the technical scheme of this embodiment; the PRG size indicated based on this embodiment may correspond to the user equipment.

For simplicity, the PRGs in the embodiment of the present invention may all refer to the DL-PRG, but in practical applications, the technical solution in the embodiment of the present invention may also be used for implicit indication of other types of PRGs.

Next, a specific operation flow of the PRG implicit indication method according to the embodiment of the present invention is specifically described from the user equipment side.

Specifically, in this embodiment, the method for implicitly indicating the PRG may include the following steps: step S101, receiving downlink control information, where the downlink control information at least includes a Modulation and Coding Scheme (MCS) index value.

Step S102, searching a preset mapping table according to the MCS Index value, where the preset mapping table is at least used for recording the MCS Index value (MCS Index, hereinafter may be referred to as I)_MCS) And the PRG size.

And step S103, determining the size of the PRG according to the search result.

More specifically, the PRG may include at least one Precoding Resource Block (PRB) configured by using the same Precoding matrix, that is, PRB bundling. Accordingly, the PRB size may refer to a size of PRB bundling size (PRB bundling size).

Further, the preset mapping table may include at least one MCS index value and a corresponding PRG size.

As one non-limiting example, the MCS index values may correspond one-to-one to the PRG sizes.

As a variation, the MCS index value may be divided into a plurality of intervals, and different intervals may correspond to different PRG sizes according to the divided intervals.

Preferably, the partitioning may be based on a desirable range of existing MCS index values. For example, the range of the MCS index value may be [0,300], and when the embodiment is adopted, 0 to 300 may be divided into a plurality of intervals, where each interval may correspond to a different PRG size.

TABLE 1

MCS index value (I)_MCS)	PRG size
		0≤I_MCS≤I_MCS1	2
I_MCS1<I_MCS≤I_MCS2	4
		I_MCS2<I_MCS≤I_MCS3	8
I_MCS3<I_MCS≤I_MCS4	16
		I_MCS>I_MCS4	CS-BW

For example, table 1 above shows a preset mapping table that may be adopted in this embodiment, where the MCS index value may be divided into 5 intervals, and the size of the PRG that may correspond to each interval is shown in table 1; the CS-BW may be a continuous scheduling bandwidth, and the continuous scheduling bandwidth may be one of preset upper limit values; said I_MCS1To I_MCS4May be taken from the range of MCS index values (i.e. [0,300]])。

Preferably, the I_MCS1Can be 5, said I_MCS2Can be 10, said I_MCS3Can be 15, said I_MCS4And may be 20. In practical applications, those skilled in the art may change more embodiments according to actual needs, and details are not described herein.

In a typical application scenario, after receiving the downlink control information, the ue searches the table 1 according to an MCS index value included in the downlink control information, so as to obtain a PRG size corresponding to the MCS index value from the table 1.

Preferably, for a scenario in which the MCS index value is divided into a plurality of intervals, each interval may include the same interval length, that is, the range of the MCS index value may be divided at equal intervals; alternatively, the length of at least some of the plurality of sections may be different from the length of other sections.

In one non-limiting embodiment, the PRG size corresponding to the MCS index value can be selected from at least a standard number series of {1,2,4,8,16}, as shown in Table 1 above. In practical applications, those skilled in the art may also adjust the number of the MCS index value intervals included in the preset mapping table listed in table 1 and the PRG size corresponding to each MCS index value interval, for example, the preset mapping table may include 3 intervals (e.g. 0 ≦ I)_MCS≤I_MCS1Corresponding to PRG size 4, I_MCS1<I_MCS≤I_MCS2Corresponding to PRG size 16, and I_MCS>I_MCS2Corresponding to PRG size CS-BW).

Further, the standard sequence may also include other sequences determined according to a protocol that may also be used to record alternative values of the PRG size.

As a variation, the PRG size corresponding to the MCS index value may also be selected from predefined values of the base station, so as to reduce the memory space occupied by the preset mapping table.

TABLE 2

MCS index value (I)_MCS)	PRG size
		0≤I_MCS≤I_MCS1	Y
I_MCS>I_MCS1	CS-BW

For example, table 2 above shows another preset mapping table that may be adopted in this embodiment, where the MCS index value may be divided into 2 intervals, and the size of the PRG that may correspond to each interval is shown in table 2; the CS-BW may be a continuous scheduling bandwidth, and the continuous scheduling bandwidth may be one of preset upper limit values; said I_MCS1May be taken from the range of MCS index values (i.e. [0,300]]) (ii) a The Y may be used to refer to the base station predefined value.

Preferably, the base station predefined value may be selected by the base station from the standard sequence.

Preferably, the base station predefined value may correspond to the user equipment.

In a typical application scenario, during a phase of establishing a communication connection with the base station, the ue may receive, in advance, the predefined value Y of the base station configured by the base station for the ue and the preset mapping table (table 2) through a high-level signaling of the base station. The high-level information may include Radio Resource Control (RRC) signaling and Packet Data Convergence Protocol (PDCP) signaling, and those skilled in the art may also change more embodiments according to actual needs, which is not described herein.

Further, in the signaling interaction process with the base station, the ue receives downlink control information sent by the base station, and searches the table 2 based on the MCS index value obtained from the downlink control information, and when the MCS index value indicated by the downlink control information is less than or equal to I recorded in the table 2_MCS1Then, the size of the PRG adopted by the base station in downlink precoding-based transmission may be determined to be the predefined value Y of the base station; otherwise, that is, when the MCS index value indicated by the downlink control information is greater than I recorded in the table 2_MCS1Then, it can be determined that the base station is precoding-based downlinkAnd the PRG size adopted during transmission is the preset upper limit value CS-BW.

Further, with continued reference to table 1 and table 2 above, the PRG size corresponding to the MCS index value may also be selected from the preset upper limit value. Those skilled in the art understand that the preset mapping table, taking table 1 as an example, is predetermined and shared by the base station and the ue, and in the subsequent signaling interaction process between the ue and the base station, the preset mapping table may be inappropriate, such as a change in channel condition; or, in the preset mapping table taking table 2 as an example, the predefined value of the base station is determined by the base station for the ue when the ue initially accesses, and similarly, in a subsequent application process, because factors such as channel conditions change, the predefined value of the base station may also be unsuitable for an actual situation of the ue, so that the preset upper limit value needs to be set to ensure that the size of the PRG implicitly indicated based on the technical scheme of this embodiment is not too large.

In one non-limiting embodiment, the preset mapping table may be predetermined by the base station and transmitted through higher layer signaling. For example, when initially accessing the base station, the ue may obtain the preset mapping table from a high-level signaling sent by the base station, and store the preset mapping table locally, so that when receiving downlink control information of the base station in the following, the ue can obtain the corresponding PRG size based on the preset mapping table. Preferably, different base stations may set different preset mapping tables, and the user equipment determines the corresponding preset mapping table according to the base station that sends the downlink control information, and then obtains the size of the PRG indicated by the base station based on the MCS index value table included in the downlink control information.

As a variation, the preset mapping table may also be shared with the base station in advance. For example, the preset mapping table may be uniformly determined by a network (or a protocol) and pre-shared to the ue and the base station, when the technical solution of this embodiment is executed, the preset mapping table is initially stored in the base station and the ue locally, and the ue does not need to obtain the preset mapping table from the base station side (for example, obtain the preset mapping table through a high-level signaling) in an initial access phase, or the ue only needs to obtain the predefined value of the base station from the base station side (for example, obtain the predefined value through a high-level signaling) in the initial access phase, so that the solution of this embodiment can be implemented, and signaling overhead is further reduced.

Further, the step S103 may further include the steps of: and determining the smaller value of the search result and a preset upper limit value as the PRG size. Preferably, the preset upper limit value may be a continuously scheduled bandwidth. Those skilled in the art understand that the larger the MCS index value is, the better the channel condition is, so the preset upper limit value needs to be set, so as to avoid that the channel condition is too good, which causes the base station to unreasonably indicate an excessively large PRG size, and adversely affects the signaling interaction efficiency between the user equipment and the base station.

Fig. 2 is a schematic structural diagram of a PRG implicit indication apparatus according to a second embodiment of the present invention. Those skilled in the art understand that the PRG implicit indication apparatus 2 described in this embodiment is used to implement the technical solution of the method described in the embodiment shown in fig. 1.

More specifically, in this embodiment, the PRG implicit indication apparatus 2 may include a receiving module 21, configured to receive downlink control information, where the downlink control information at least includes an MCS index value; a searching module 22, configured to search a preset mapping table according to the MCS index value, where the preset mapping table is at least used to record a mapping relationship between the MCS index value and a PRG size; and the determining module 23 is configured to determine the PRG size according to the search result.

In one non-limiting embodiment, the PRG size corresponding to the MCS index value can be selected from at least a standard number series of {1,2,4,8,16 }.

As a variation, the PRG size corresponding to the MCS index value may also be selected from base station predefined values. Preferably, the base station predefined value may be previously received from a higher layer signaling of the base station.

Further, the PRG size corresponding to the MCS index value may also be selected from a preset upper limit value.

In one non-limiting embodiment, the preset mapping table may be predetermined by the base station and transmitted through higher layer signaling.

As a variation, the preset mapping table may be shared with the base station in advance.

Further, the determining module 23 may include a determining sub-module 231, configured to determine the smaller value of the search result and a preset upper limit value as the PRG size.

Preferably, the preset upper limit value may be a continuously scheduled bandwidth.

For more contents of the operation principle and the operation mode of the PRG implicit indication apparatus 2, reference may be made to the related description in fig. 1, and details are not repeated here.

Fig. 3 is a flowchart of a PRG implicit indication method according to a third embodiment of the present invention. For the details of the PRG, reference may be made to the description in fig. 1, which is not repeated herein.

Next, a specific operation flow of the PRG implicit indication method according to the embodiment of the present invention is specifically described from the base station side. The base station may use the technical solution of this embodiment to instruct the user equipment to determine the PRG size when downlink is transmitted based on precoding.

Specifically, in this embodiment, the method for implicitly indicating the PRG may include the following steps:

step S201, a preset mapping table is searched according to the PRG size to determine the MCS index value corresponding to the PRG size.

Step S202, sending downlink control information, wherein the downlink control information at least comprises the MCS index value.

Wherein, the preset mapping table is at least used for recording the mapping relationship between the MCS index value and the PRG size.

More specifically, the PRG size in step S201 may correspond to the user equipment.

As a variation, the PRG size corresponding to the MCS index value may be selected from base station predefined values. Preferably, the base station predefined value is indicated in advance through higher layer signaling.

Further, the PRG size corresponding to the MCS index value may also be selected from a preset upper limit value. Preferably, the preset upper limit value may be a continuously scheduled bandwidth.

In one non-limiting embodiment, the preset mapping table is predetermined and sent by higher layer signaling. Preferably, the base station applied to different application scenarios (also referred to as scenarios) may set different preset mapping tables according to needs (for example, different preset mapping tables may include different numbers of partition areas; and may further include different PRG sizes selected from the standard number series). For example, a base station for implementing broadband transmission and a base station for performing higher layer configuration may configure different preset mapping tables.

As a variation, the preset mapping table is shared with the ue in advance.

For the specific description of the preset mapping table and the MCS index value, reference may be made to the related description in fig. 1, which is not repeated herein.

Fig. 4 is a schematic structural diagram of a PRG implicit indication apparatus according to a fourth embodiment of the present invention. Those skilled in the art understand that the PRG implicit indication apparatus 4 described in this embodiment may be used to implement the technical solution of the method described in the embodiment shown in fig. 3.

More specifically, in this embodiment, the PRG implicit indication apparatus 4 may include a lookup module 41, configured to lookup a preset mapping table according to a PRG size, so as to determine an MCS index value corresponding to the PRG size; a sending module 42, configured to send downlink control information, where the downlink control information at least includes the MCS index value; wherein, the preset mapping table is at least used for recording the mapping relationship between the MCS index value and the PRG size.

As a variation, the PRG size corresponding to the MCS index value may also be selected from base station predefined values. Preferably, the base station predefined value may be indicated in advance through higher layer signaling.

In one non-limiting embodiment, the preset mapping table may be predetermined and transmitted through higher layer signaling.

As a variation, the preset mapping table may also be shared with the ue in advance.

Fig. 5 is a signaling interaction diagram of an exemplary application scenario in which an embodiment of the present invention is employed. Referring to fig. 5, the user equipment 1 and the base station 2 may respectively adopt the technical solutions of the methods shown in fig. 1 and fig. 3; the base station 2 may be a gNB, and in practical applications, the base station 2 may also be another type of base station, such as an eNB for connecting to a 4G network.

Specifically, in this application scenario, the base station 2 may perform operation s1 in advance to configure the preset mapping table according to its own scenario. The preset mapping table may be used to determine a mapping relationship between an MCS index value and a PRG size; the PRG size corresponding to the MCS index value in the preset mapping table may be selected from a standard number series, such as {1,2,4,8,16 }.

Further, during an initial access phase with the ue 1, the base station 2 may perform operation s2 to send the preset mapping table to the ue through higher layer signaling.

Further, after receiving the preset mapping table, the user equipment 1 may perform operation s3 to store the preset mapping table. The preset mapping table may be stored in a local memory of the user equipment 1, or may be stored in an external storage medium in communication with the user equipment 1.

Further, when the PRG size configured to the user equipment needs to be implicitly indicated to the user equipment 1, the base station 2 may perform operation s4 to search the preset mapping table to determine the MCS index value corresponding to the PRG size.

Further, after determining that the MCS index value is determined together with the PRG size, the base station 2 may perform operation s5 to transmit downlink control information to the user equipment 1, where the downlink control information may include the MCS index value.

Further, after receiving the downlink control information, the user equipment 1 may perform operation s6 to search a pre-stored preset mapping table, so as to determine a PRG size corresponding to an MCS index value included in the downlink control information.

As a variation, the operation s1 may also be performed during the initial access phase, that is, the preset mapping table may also be configured by the base station 2 during the initial access phase setup with the user equipment 1.

In another typical application scenario, the PRG size corresponding to the MCS index value in the preset mapping table may also be selected from predefined values of a base station, which are determined by the base station 2 according to the user equipment 1 during an initial access phase. Correspondingly, in the initial access phase, the base station 2 may determine, according to the self scenario, the preset mapping table by the operation s1, and determine the predefined value of the base station according to the user equipment 1; then, the base station 2 may perform operation s2 to send the preset mapping table and base station predefined values to the user equipment 2 through the higher layer signaling.

Correspondingly, after receiving the high-level signaling sent by the base station 2, the user equipment 1 may obtain and store the preset mapping table indicated by the base station 2 and the predefined value of the base station. Further, after receiving the downlink control information sent by the base station 2, the user equipment 1 may also perform the operation s6 to determine the corresponding PRG size according to the MCS index value indicated in the downlink control information. Wherein, when the MCS index value corresponds to the predefined value of the base station in the preset mapping table, the ue 1 may determine that the predefined value of the base station prestored therein is the PRG size indicated by the base station 2 this time.

In a common variation of the above application scenarios, the preset mapping table may further include a preset upper limit value. Preferably, the preset upper limit value may be a continuously scheduled bandwidth.

In another common variation of the foregoing application scenarios, after searching the preset mapping table based on the MCS index value indicated by the base station 2 and obtaining a corresponding search result, the user equipment 1 may further perform operation s7 to determine the PRG size based on a comparison result between the search result and a preset upper limit value. Preferably, the smaller value of the search result and a preset upper limit value may be determined as the PRG size.

An embodiment of the present invention further provides a storage medium, where computer instructions are stored, and when the computer instructions are executed, the method technical solution described in the embodiments shown in fig. 1 and fig. 3 is executed. Preferably, the storage medium may include a computer-readable storage medium. The storage medium may include ROM, RAM, magnetic or optical disks, etc.

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

An embodiment of the present invention further provides a base station, which includes a memory and a processor, where the memory stores a computer instruction capable of running on the processor, and the processor executes the technical solution of the method in the embodiment shown in fig. 3 when running the computer instruction.

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

Claims

1. A PRG implicit indication method, comprising:

receiving downlink control information, wherein the downlink control information at least comprises an MCS index value;

searching a preset mapping table according to the MCS index value, wherein the preset mapping table is at least used for recording the mapping relationship between the MCS index value and the PRG size, the preset mapping table comprises at least one MCS index value and the corresponding PRG size, the MCS index value is divided into a plurality of intervals, different intervals correspond to different PRG sizes according to the divided intervals, and the interval length of at least one part of the intervals in the plurality of intervals is different from the interval lengths of other intervals;

and determining the PRG size according to the search result.

2. The method of claim 1, wherein the PRG size corresponding to the MCS index value is selected from at least a list of criteria, the list of criteria being {1,2,4,8,16 }.

3. The method of claim 1, wherein the PRG size corresponding to the MCS index value is selected from a predefined value of a base station.

4. The method of claim 3, wherein the base station predefined value is pre-received from a high layer signaling of a base station.

5. The method of any of claims 2-4, wherein the PRG size corresponding to the MCS index value is further selected from a preset upper limit value.

6. The method of claim 1, wherein the predetermined mapping table is predetermined by a base station and transmitted through higher layer signaling.

7. The implicit PRG indication method of claim 1, wherein the preset mapping table is shared with a base station in advance.

8. The method for implicitly indicating a PRG according to any of claims 1 to 4, 6 and 7, wherein the determining a PRG size according to the result of the lookup comprises:

and determining the smaller value of the search result and a preset upper limit value as the PRG size.

9. The method of claim 8, wherein the preset upper limit value is a continuous scheduling bandwidth.

10. A PRG implicit indication apparatus, comprising:

a receiving module, configured to receive downlink control information, where the downlink control information at least includes an MCS index value;

a searching module, configured to search a preset mapping table according to the MCS index value, where the preset mapping table is at least used to record a mapping relationship between the MCS index value and a PRG size, the preset mapping table includes at least one MCS index value and a corresponding PRG size, the MCS index value is divided into multiple intervals, and according to the divided intervals, different intervals correspond to different PRG sizes, and an interval length of at least one part of the multiple intervals is different from an interval length of other intervals;

and the determining module is used for determining the size of the PRG according to the searching result.

11. The implicit PRG indication device of claim 10, wherein the PRG size corresponding to the MCS index value is selected from at least a list of criteria, the list of criteria being {1,2,4,8,16 }.

12. The implicit indication device of PRG of claim 10, wherein the PRG size corresponding to the MCS index value is selected from a predefined value of a base station.

13. The implicit indication device of PRG according to claim 12, wherein the predefined value of the base station is pre-received from a high layer signaling of the base station.

14. The implicit indication device of PRG according to any of claims 11 to 13, wherein the size of PRG corresponding to the MCS index value is further selected from a preset upper limit value.

15. The implicit indication device of PRG of claim 10, wherein the predetermined mapping table is predetermined by a base station and transmitted through higher layer signaling.

16. The implicit indication device of PRG of claim 10, wherein the preset mapping table is pre-shared with a base station.

17. The implicit indication device of PRG according to any of claims 10 to 13, 15, 16, wherein the determining module comprises:

and the determining submodule is used for determining the smaller value of the search result and a preset upper limit value as the PRG size.

18. The implicit indication device of PRG of claim 17, wherein the preset upper limit value is a continuous scheduling bandwidth.

19. A PRG implicit indication method, comprising:

searching a preset mapping table according to the size of the PRG to determine an MCS index value corresponding to the size of the PRG;

sending downlink control information, wherein the downlink control information at least comprises the MCS index value;

the preset mapping table is at least used for recording the mapping relationship between the MCS index value and the PRG size, the preset mapping table comprises at least one MCS index value and the corresponding PRG size, the MCS index value is divided into a plurality of intervals, different intervals correspond to different PRG sizes according to the divided intervals, and the interval length of at least one part of the intervals in the plurality of intervals is different from the interval length of other intervals.

20. The method of claim 19, wherein the PRG size corresponding to the MCS index value is selected from at least a list of criteria, the list of criteria being {1,2,4,8,16 }.

21. The method of claim 19, wherein the PRG size corresponding to the MCS index value is selected from a predefined value for a base station.

22. The method of claim 21, wherein the base station predefined value is indicated in advance by higher layer signaling.

23. The method of any of claims 20-22, wherein the PRG size corresponding to the MCS index value is further selected from a preset upper limit value.

24. The method of claim 23, wherein the preset upper limit value is a continuous scheduling bandwidth.

25. The method for implicit indication of PRG according to any of claims 19 to 22, wherein the predetermined mapping table is predetermined and sent by higher layer signaling.

26. The implicit indication method of PRG according to any of claims 19 to 22, wherein the preset mapping table is shared with the ue in advance.

27. A PRG implicit indication apparatus, comprising:

the searching module is used for searching a preset mapping table according to the PRG size so as to determine an MCS index value corresponding to the PRG size;

a sending module, configured to send downlink control information, where the downlink control information at least includes the MCS index value;

28. The implicit PRG indication device of claim 27, wherein the PRG size corresponding to the MCS index value is selected from at least a list of criteria, the list of criteria being {1,2,4,8,16 }.

29. The implicit indication of PRG device of claim 27, wherein the PRG size corresponding to the MCS index value is selected from a predefined value of a base station.

30. The implicit indication device of PRG of claim 29, wherein the predefined value of the base station is indicated in advance by higher layer signaling.

31. The implicit indication device of PRG according to any of claims 28 to 30, wherein the size of PRG corresponding to the MCS index value is further selected from a preset upper limit value.

32. The implicit indication device of PRG of claim 31, wherein the preset upper limit value is a continuous scheduling bandwidth.

33. The implicit indication device of PRG according to any of claims 27 to 30, wherein the preset mapping table is predetermined and sent by higher layer signaling.

34. The implicit indication device of PRG according to any of claims 27 to 30, wherein the preset mapping table is shared with the ue in advance.

35. A storage medium having stored thereon computer instructions operable to perform the steps of the method of any of claims 1 to 9 or any of claims 19 to 26.

36. A terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the method of any one of claims 1 to 9.

37. A base station comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor when executing the computer instructions performs the steps of the method of any one of claims 19 to 26.