WO2019157697A1

WO2019157697A1 - Transmission block size list constructing and selecting method, random access method, and communication device

Info

Publication number: WO2019157697A1
Application number: PCT/CN2018/076811
Authority: WO
Inventors: 刘佳慧; 牟勤; 刘柳; 五十川贵之
Original assignee: 株式会社Ntt都科摩
Priority date: 2018-02-14
Filing date: 2018-02-14
Publication date: 2019-08-22

Abstract

Embodiments of the present invention provide a transmission block size (TBS) list constructing and selecting method, a random access method, and a communication device. The transmission block size list constructing method according to the embodiments of the present invention comprises: selecting, according to a preset rule, a particular number of TBS values from a TBS table for an uplink data channel, wherein the TBS table comprises TBS indexes for indicating row indexes of the TBS table and physical resource block (PRB) indexes for indicating PRBs; and constructing one or more TBS lists according to the selected TBS values, the TBS list being used for a random access process based on advanced data transmission.

Description

Transport block size list construction and selection method, random access method, and communication device

Technical field

The present application relates to the field of wireless communications, and in particular to transport block size list construction and selection methods, random access methods, and communication devices that can be used in wireless communication systems.

Background technique

Random access is a necessary process for establishing a wireless link between a base station (eNB) and a user equipment (UE) in a wireless communication system. FIG. 1 shows a flow chart of a UE performing random access to a base station in a conventional wireless communication system. As shown in Figure 1, in the random access procedure, the UE may first send a preamble to the base station, that is, message 1 (Msg.1); then the base station sends feedback to the UE, that is, message 2 (Msg. 2); After receiving the feedback from the base station, the UE will send a message 3 (Msg.3) to the base station for subsequent data transmission; and the base station will complete the random access through message 4 (Msg.4), thereby establishing wireless with the base station. Resource Control (RRC) connection. Subsequently, the UE transmits uplink data to the base station.

In the Internet of Things technology, it is desirable to implement random access between a base station and a UE using less signaling interaction. Figure 2 shows a schematic diagram of random access based on Advance Data Transmission (EDT). As shown in FIG. 2, compared with the traditional random access procedure, EDT-based random access performs uplink data transmission in Msg.3, and this advanced data transmission method reduces the relationship between the base station and the UE. The overhead has improved the latency of the communication system.

However, since the resources and TBS values allocated to the transport block size (TBS) table of Msg.3 are relatively small in the prior art random access procedure, Msg.3 in EDT-based random access cannot be satisfied. There is a need to send upstream data, so a new construction method for the TBS list of EDT-based random access Msg.3 is needed.

Summary of the invention

According to an aspect of the present invention, a transport block size (TBS) list construction method is provided, which is applied to a communication device, including: selecting a specific number of TBS values in a TBS table for an uplink data channel according to a preset rule, Wherein the TBS table includes a TBS index indicating a row index of the TBS table and a PRB index indicating a physical resource block (PRB); constructing one or more TBS lists according to the selected TBS value, the TBS The list is used for random access procedures based on advanced data transmission.

According to another aspect of the present invention, a communication device is provided, comprising: a selection unit configured to select a specific number of TBS values in a Transport Block Size (TBS) table for an uplink data channel according to a preset rule, wherein The TBS table includes a TBS index for indicating a row index of the TBS table and a PRB index for indicating a physical resource block (PRB); a building unit configured to construct one or more TBS lists according to the selected TBS value The TBS list is used for a random access procedure based on advanced data transmission.

According to another aspect of the present invention, a random access method is provided, which is applied to a user equipment, and includes: receiving indication information of an advance data transmission sent by a base station, where the indication information is located in a reserved bit in a random access response. Bit; determining, according to the indication information, whether to perform advanced data transmission in a random access procedure.

According to another aspect of the present invention, a transport block size (TBS) list selection method is provided, which is applied to a communication device, comprising: selecting one of a plurality of TBS lists, the selected TBS list being used for random Data transmission during the access process; sending information related to the selected TBS list.

According to another aspect of the present invention, a communication device is provided, comprising: a selecting unit configured to select one of a plurality of TBS lists, the selected TBS list being used for data transmission in a random access procedure a sending unit configured to transmit information related to the selected TBS list.

With the transport block size list construction and selection method, random access method, and communication device according to the above aspect of the present invention, it is possible to provide a TBS list for EDT-based random access Msg.3 to satisfy Msg in EDT transmission. 3 The need for resource allocation and TBS values.

DRAWINGS

The above and other objects, features and advantages of the present invention will become apparent from

1 shows a flow chart of a UE performing random access to a base station in a conventional wireless communication system;

Figure 2 shows a schematic diagram of random access based on advanced data transmission;

Figure 3 shows a TBS table for the uplink data channel in CE mode A of the MTC;

Figure 4 shows a TBS table for Msg.3 in the existing random access procedure;

FIG. 5 is a flowchart showing a method for constructing a transport block size list;

6 is a schematic diagram showing the number of PRB resources and the location of a PRB resource according to the first embodiment of the present invention;

7(a) shows an example of selecting a TBS index value from a TBS table of an uplink data channel, and FIG. 7(b) shows a schematic diagram of a selected PRB position;

8(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel, FIG. 8(b) shows a schematic diagram for selecting a corresponding PRB position, and FIG. 8(c) shows the utilization of the selected one. Schematic diagram of joint coding of TBS value and PRB resource location;

9(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel, and FIG. 9(b) shows a schematic diagram of selecting a corresponding PRB position;

10(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel, and FIG. 10(b) shows a schematic diagram of selecting a corresponding PRB position;

11(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel, and FIG. 11(b) shows a schematic diagram of selecting a corresponding PRB position;

12(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel, and FIG. 12(b) shows a schematic diagram of selecting a corresponding PRB position;

FIG. 13(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel, and FIG. 13(b) shows a schematic diagram of selecting a corresponding PRB position;

14(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel, and FIG. 14(b) shows a schematic diagram of selecting a corresponding PRB position;

15(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel, and FIG. 15(b) shows a schematic diagram of selecting a corresponding PRB position;

16(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel, and FIG. 16(b) shows a schematic diagram of selecting a corresponding PRB position;

17(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel, and FIG. 17(b) shows a schematic diagram of selecting a corresponding PRB position;

18(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel, and FIG. 18(b) shows a schematic diagram of selecting a corresponding PRB position;

19(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel, and FIG. 19(b) shows a schematic diagram of selecting a corresponding PRB position;

20(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel, and FIG. 20(b) shows a schematic diagram of selecting a corresponding PRB position;

21 shows an example of selecting a TBS value from a TBS table of an uplink data channel;

FIG. 22 shows an example of selecting a TBS value from a TBS table of an uplink data channel;

Figure 23 is a block diagram showing the structure of a communication device in accordance with a first embodiment of the present invention;

FIG. 24 is a flowchart showing a random access method according to a second embodiment of the present invention; FIG.

FIG. 25 is a diagram showing a MAC RAR according to a second embodiment of the present invention; FIG.

FIG. 26 is a flowchart showing a random access method according to a second embodiment of the present invention; FIG.

FIG. 27 is a block diagram showing the structure of a UE according to a second embodiment of the present invention; FIG.

28 is a block diagram showing the structure of a base station according to a second embodiment of the present invention;

29 is a flowchart showing a TBS list selection method according to a third embodiment of the present invention;

Figure 30 is a block diagram showing the structure of a communication device in accordance with a third embodiment of the present invention;

FIG. 31 is a diagram showing an example of a hardware configuration of a user equipment, a base station, or a communication device according to an embodiment of the present invention.

Detailed ways

A transport block size list construction and selection method, a random access method, and a communication apparatus according to an embodiment of the present invention will be described below with reference to the accompanying drawings. In the figures, the same reference numerals are used to refer to the same elements. It is to be understood that the embodiments described herein are illustrative only and are not intended to limit the scope of the invention.

A Transport Block Size (TBS) table may indicate a TBS value allocation for the uplink data channel PUSCH. 3 shows a TBS table for an uplink data channel in a CE mode A of a conventional MTC. As can be seen from FIG. 3, in a TBS table for an uplink data channel, a different physical resource block (PRB) index is indicated. The TBS value (in bits) of different TBS indexes (I_TBS) under (N_PRB). That is to say, FIG. 3 indicates the number of transport block size bits corresponding to the TBS levels of 0-10 respectively under 1-6 PRBs. It can be seen that in the uplink data channel of normal transmission, the maximum number of bits of the data packet that can be transmitted can be 1032. Correspondingly, FIG. 4 shows a TBS table for Msg.3 in the existing random access procedure. The difference from FIG. 3 is that in the existing random access procedure, only two PRB resources are allocated in the TBS table for Msg.3, and the TBS level is only 0-3, and the maximum number of bits that can be transmitted. Only 328.

It can be seen that in the EDT-based random access scenario, when Msg.3 needs to simultaneously send uplink data, the existing TBS table for Msg.3 is far from meeting the demand for resource allocation and TBS value limitation. .

(First Embodiment)

The first embodiment of the present invention provides a method for constructing a transport block size list, which is applied to a communication device, so as to meet the resource allocation and transmission capacity requirements of Msg.3 in an EDT-based random access procedure.

First, a transport block size list construction method performed by a communication device according to a first embodiment of the present invention will be described with reference to FIG. FIG. 5 shows a flow diagram of the transport block size list construction method 500. In the first embodiment of the present invention, the communication device may be any communication device capable of implementing the foregoing method for constructing a transport block size list, and may be, for example, a base station or a user equipment, and may also be a core network device, etc., and do not do this. limit. The TBS list in the first embodiment of the present invention can be applied to a random access procedure in the Internet of Things, for example, including uplink data transmission under MTC or uplink data transmission under NB-LoT, and particularly can be applied to EDT based on EDT. Uplink data transmission for Msg.3.

As shown in FIG. 5, in step S501, a specific number of TBS values are selected in a TBS table for an uplink data channel according to a preset rule, wherein the TBS table includes a row index for indicating the TBS table. A TBS index and a PRB index for indicating a physical resource block (PRB).

In the first embodiment of the present invention, a specific number of TBS values may be selected in a TBS table for an uplink data channel as shown in FIG. 3 according to a preset rule.

In an implementation manner, a specific number of TBS values that are not mutually exclusive may be selected in a TBS table of the uplink control channel. For example, in the TBS table shown in FIG. 3, a plurality of TBS values that are not completely repeated may be selected according to the value of the TBS value. The number of selected TBS values may vary according to the actual application scenario, and is not limited herein. For example, in one example, the selected TBS value may be 18 TBS values that are not mutually exclusive; in another example, the selected TBS value may be 25 TBS values that are not mutually exclusive.

In another implementation manner, according to a preset rule, selecting a specific number of TBS values in a TBS table of the uplink control channel may be: in a TBS table of the uplink control channel, selecting corresponding to each other has a preset interval a TBS value of a plurality of TBS index values; or in a TBS table of the uplink control channel, selecting a TBS value corresponding to one or more specific TBS index values; or in a TBS table of the uplink control channel, selecting One or more TBS index values with larger or smaller TBS index values. Wherein, in one example, the TBS value corresponding to the TBS index value of the TBS index values of 2, 4, 6, and 8 may be selected in the TBS table shown in FIG. 3, for example; in another example, For example, in the TBS table shown in FIG. 3, the TBS value corresponding to the TBS index value of the TBS index values of 3, 6, and 9, respectively is selected; in another example, the TBS table shown in FIG. 3 may be selected, for example. The TBS index value is a TBS value corresponding to the TBS index value of 1, 3-5, 9; in another example, a TBS with a TBS index value ranging from 3-9 may be selected in, for example, the TBS table shown in FIG. The TBS value corresponding to the index value; in another example, the TBS value corresponding to the TBS index value of the TBS index value ranging from 0-4 may be selected in a TBS table such as shown in FIG. 3; in another example The TBS value corresponding to the TBS index value of the TBS index value ranging from 6 to 10 may be selected in the TBS table shown in FIG. 3, for example. That is to say, in the first embodiment of the present invention, the TBS index corresponding to the selected TBS value may be an arbitrarily selected one or more TBS index values, which is not limited herein. In this implementation, after the row of the TBS table corresponding to the specific one or more TBS index values is selected, the corresponding PRB index value may be further selected. In an example, the selected TBS value may have the same number of TBS values included in each TBS index value; for example, the PRB index values corresponding to the selected TBS values under each TBS index value may be the same respectively. Or different. For example, the selected TBS values corresponding to the TBS index values 3-7 may respectively correspond to the same number of PRB index values, for example, each of the TBS index values respectively corresponds to 5 PRB index values. Further, when each TBS index value corresponds to the same number of PRB index values, they may respectively correspond to the same PRB index value, for example, 1-5.

In another implementation manner, selecting a specific number of TBS values in a TBS table of the uplink control channel according to a preset rule may be: in a TBS table of the uplink control channel, selecting corresponding to each other has a preset interval a TBS value of a plurality of PRB index values; or in a TBS table of the uplink control channel, selecting a TBS value corresponding to one or more specific PRB index values; or in a TBS table of the uplink control channel, selecting One or more TBS index values with a larger or smaller PRB index value. Wherein, in one example, the TBS value corresponding to the PRB index value of the 2, 4, and 6 PRB index values may be selected in the TBS table shown in FIG. 3; for example, in another example, In the TBS table shown in FIG. 3, the TBS value corresponding to the PRB index value of the 1, 2, and 5 PRB index values is respectively selected; in another example, the PRB index may be selected in the TBS table shown in, for example, FIG. The value is a TBS value corresponding to the PRB index value of 1, 3-5; in another example, the PRB index value with the PRB index value ranging from 1-3 may be selected in the TBS table shown in FIG. 3, for example. The TBS value; in another example, the TBS value corresponding to the PRB index value of the PRB index value in the range of 4-6 may be selected in the TBS table shown in FIG. 3, for example. That is to say, in the first embodiment of the present invention, the PRB index corresponding to the selected TBS value may be an arbitrarily selected one or more PRB index values, which is not limited herein. In this implementation, after the column of the TBS table corresponding to the specific one or more PRB index values is selected, the corresponding TBS index value may be further selected. In an example, the selected TBS value may have the same number of TBS values included in each PRB index value; for example, the TBS index values corresponding to the selected TBS values under each PRB index value may be the same respectively. Or different. For example, the selected TBS values corresponding to the PRB index values 3-6 may respectively correspond to the same number of TBS index values, for example, each TBS index value respectively corresponds to 6 TBS index values. Further, when each TBS index value corresponds to the same number of TBS index values, it may correspond to the same TBS index value, for example, 7-9.

In the first embodiment of the present invention, it is considered that in the CE mode B of the MTC, the EDT-based random access procedure may have up to 936 bits of uplink data transmission, and therefore, for the TBS value in the CE mode B of the MTC. During the selection process, at least one TBS value greater than or equal to 936 bits is required. In the CE mode A of the MTC, the EDT-based random access procedure can have up to 1032 bits of uplink data transmission. Therefore, in the CE mode A of the MTC, the selection of the TBS value needs to include at least 1032 bits. The TBS value. In addition, when the selected maximum TBS value used to construct the TBS list is not enough, the access restriction may be performed on the user equipment using the EDT mode in an additional manner to avoid user equipment transmission in which the EDT mode random access is to be performed. The packet is too large and the transfer cannot be performed.

In step S502, one or more TBS lists may be constructed according to the selected TBS value, the TBS list being used for a random access procedure based on advanced data transmission.

Specifically, in the first embodiment of the present invention, the TBS list may be constructed according to at least the TBS value selected in step S501, and the TBS list may be applied to Msg.3 of the EDT-based random access procedure, for The transmission of upstream data. In an implementation manner, when constructing the TBS list, all may be based on the TBS value selected in step S501; in another implementation manner, when constructing the TBS list, the TBS value selected based on step S501 may be Based on the additional selection of one or more TBS values to jointly build a TBS list. For example, in one example, a specific number of TBS values that are not repeated in the TBS table of the uplink control channel may be used to construct a TBS list; in another example, specific ones that are not mutually exclusive may be selected After the number of TBS values, one or more repeated TBS values are additionally selected according to the requirements of the actual application scenario to jointly construct a TBS list. In one example, the constructed TBS list may be one; in another example, the constructed TBS list may be two or more, so that in the random access, according to the actual application scenario, the base station and/or Or the user equipment selects one of the plurality of TBS lists for random access of the EDT.

In the first embodiment of the present invention, the method may further include: determining a PRB resource corresponding to the PRB index value according to the PRB index value corresponding to the selected specific number of TBS values, optionally, the The TBS list may include the determined PRB resources. FIG. 6 is a diagram showing the number of PRB resources and the location of PRB resources according to the first embodiment of the present invention. As shown in FIG. 6 , in the MTC, a maximum of six PRB resource locations may be allocated, and the probability and specific allocation manner of the PRB resource locations that are different for different PRB resource numbers are also different. For example, when the number of PRB resources is 1, it can be allocated to 6 resource locations of 0-5, respectively, and has the possibility of 6 resource allocations; and when the number of PRB resources is 5, it can be allocated respectively at {0, 1 Two resource locations, 2, 3, 4} and {1, 2, 3, 4, 5}, have the possibility of two resource allocations. Optionally, after the possibility of selecting or determining one or more PRB resource allocation manners for the PRB index value corresponding to the selected TBS value, in one example, the selected TBS value may be selected according to The TBS list is separately encoded and the PRB resources are separately encoded, that is, the correspondence between the number of PRB resources and the allocation location and the correspondence between the TBS index, the PRB index, and the TBS value can be separately constructed to obtain a TBS list. In another example, the TBS list may also be constructed according to the joint encoding of the selected TBS value and the PRB resource, that is, the PRB resource allocation location, the TBS index, the PRB index, and the TBS value may be jointly encoded. A correspondence between each parameter is generated to construct a TBS list. In still another example, the TBS list may be constructed according to joint coding of the selected TBS value and the number of retransmissions, or may be constructed according to the selected TBS value, the PRB resource allocation location, and the number of retransmissions. . The content, quantity, and type of each parameter in the constructed TBS list are determined according to the actual application scenario, and are not limited herein.

In the first embodiment of the present invention, in the related indication of the TBS for Msg.3 in the prior art, there are three indication bits for the number of PRBs and the location of the PRB resources, and for the PRB index and the TBS index in the TBS table. There are two indication bits in the TBS value table. It can be seen that there are five TBS related indication bits of the existing Msg.3. In order to minimize the number of indication bits of the Msg.3 in the EDT-based random access procedure, the indication bits for the constructed TBS list in the first embodiment of the present invention may also be less than or equal to five. This means that in the first embodiment of the present invention, in order to minimize the complexity of decoding at the receiving end of the Msg.3 uplink data transmission and to minimize resource waste, it is desirable to be able to increase the Msg.3 with respect to the TBS indication bit. In the case of a number, up to 32 states are used to indicate as many TBS value states as possible.

A specific example of selecting a TBS value to further construct a TBS list according to the TBS list construction method of the first embodiment of the present invention is enumerated below.

In the first example of the first embodiment of the present invention, specific examples of respectively selecting the TBS value and the corresponding PRB resource position are exemplified. FIG. 7(a) shows an example of selecting a TBS index value from a TBS table of an uplink data channel in CE mode B of the MTC, and FIG. 7(b) shows a schematic diagram of selecting a PRB resource location. Specifically, in the TBS table shown in FIG. 7( a ), a total of four TBS indexes whose TBS index values are 0, 3, 6, and 9, respectively, are selected, and FIG. 7( b ) is for the number of

PRBs

3 and 4, 6 A total of 8 PRB possible resource locations were selected. Subsequently, in the first example, the selected TBS index value and the PRB resource location may be separately encoded, for example, 2 bits may be used to represent the selected total of 4 TBS indexes, while 3 bits are used to represent the selected 8 PRB resource locations. It can be seen that in this example, a total of 5 bits can be used to construct a TBS list including two sets of correspondences to jointly indicate a TBS value corresponding to a certain TBS index and a certain PRB resource location and a corresponding PRB index.

In a second example of the first embodiment of the present invention, the TBS value and the corresponding PRB resource location are separately selected, and the TBS list is constructed according to the selected TBS value and the PRB resource joint coding. Implementation content. 8(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel in CE mode B of the MTC, and FIG. 8(b) shows a schematic diagram of selecting a corresponding PRB position, FIG. 8(c) A schematic diagram of joint coding using the selected TBS value and PRB resource location is shown. Specifically, in the TBS table shown in FIG. 8(a), among the TBS indexes (1, 3, 5, 7, and 9, respectively) having the same interval, the same PRB index value (1-6) is selected. There are a total of 30 TBS values, and Figure 8(b) determines one of the PRB resource locations for the respective PRB index values. Subsequently, in FIG. 8(c), joint encoding is performed for the selected TBS value and the PRB resource location, and a TBS list constructed by a total of 5 bits is obtained.

In the third example of the first embodiment of the present invention, specific examples of respectively selecting the TBS value and the corresponding PRB resource position are exemplified. 9(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel in CE mode B of the MTC, and FIG. 9(b) shows a schematic diagram of selecting a corresponding PRB position. Specifically, in the TBS table shown in FIG. 9(a), a total of 30 TBS values having the same PRB index value (1-6) are selected in a specific number of TBS indexes (5-9), respectively, and Figure 8(b) determines one of the PRB resource locations for the respective PRB index values. Subsequently, the selected TBS value and the PRB resource location may be jointly coded to obtain a TBS list constructed by a total of 5 bits, and the specific coded content is skipped here.

In the fourth example of the first embodiment of the present invention, specific examples of respectively selecting the TBS value and the corresponding PRB resource position are exemplified. FIG. 10(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel in CE mode B of the MTC, and FIG. 10(b) shows a schematic diagram of selecting a corresponding PRB position. Specifically, in the TBS table shown in FIG. 10(a), under the specific several PRB indexes (1-6), the number of TBS values having the same number is selected, but not the same TBS index value. A plurality of TBS values, and FIG. 10(b) determines one of the PRB resource locations for the respective PRB index values. Subsequently, joint encoding can be performed for the selected TBS value and the PRB resource location, and a TBS list constructed by a total of 5 bits is obtained. Optionally, considering the size of the Msg.3 in the actual application scenario, several TBS values with a small number of bits (such as 24, 32, and 40 in FIG. 10(a)) may be ignored.

In the fifth example of the first embodiment of the present invention, specific examples of respectively selecting the TBS value and the corresponding PRB resource position are exemplified. 11(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel in CE mode B of the MTC, and FIG. 11(b) shows a schematic diagram of selecting a corresponding PRB position. Specifically, in the TBS table shown in FIG. 11(a), under the specific several PRB indexes (1-6), the number of TBS values having the same number (for example, five) is selected, but not the same. A plurality of TBS values of the TBS index value, and FIG. 11(b) determines one of the PRB resource locations for the respective PRB index values. Subsequently, joint encoding can be performed for the selected TBS value and the PRB resource location, and a TBS list constructed by a total of 5 bits is obtained.

In the sixth example of the first embodiment of the present invention, specific examples of respectively selecting the TBS value and the corresponding PRB resource position are exemplified. Fig. 12(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel in CE mode B of the MTC, and Fig. 12(b) shows a schematic diagram of selecting a corresponding PRB position. Specifically, in the TBS table shown in FIG. 12(a), the TBS value is selected under a specific number of PRB indexes (3-9), and when selected, the repeated TBS value can be avoided as much as possible, FIG. 12(b) One of the PRB resource locations is determined for the corresponding PRB index value. Subsequently, joint encoding can be performed for the selected TBS value and the PRB resource location, and a TBS list constructed by a total of 5 bits is obtained.

In the seventh example of the first embodiment of the present invention, specific examples of respectively selecting the TBS value and the corresponding PRB resource position are exemplified. Fig. 13(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel in CE mode B of the MTC, and Fig. 13(b) shows a schematic diagram of selecting a corresponding PRB position. Specifically, in the TBS table shown in FIG. 13 (a), different numbers of TBS values are selected under different PRB indexes, and when selected, TBS values with a large number of PRBs may be selected as much as possible to correspond to relatively large numbers. TBS value. Figure 13(b) determines one of the PRB resource locations for the respective PRB index values. Subsequently, joint encoding can be performed for the selected TBS value and the PRB resource location, and a TBS list constructed by a total of 5 bits is obtained.

In the eighth example of the first embodiment of the present invention, specific examples of respectively selecting the TBS value and the corresponding PRB resource position are exemplified. 14(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel in CE mode B of the MTC, and FIG. 14(b) shows a schematic diagram of selecting a corresponding PRB position. Specifically, in the TBS table shown in FIG. 14(a), the TBS value is selected under a specific PRB index (4-6), and when selected, the TBS value 1032 larger than the number of bits 936 defined by CE mode B can be deleted. . Figure 14(b) determines one of the PRB resource locations for the respective PRB index values (4-6). Subsequently, joint encoding can be performed for the selected TBS value and the PRB resource location, and a TBS list constructed by a total of 5 bits is obtained.

In the ninth example of the first embodiment of the present invention, specific examples of respectively selecting the TBS value and the corresponding PRB resource position are exemplified. Fig. 15(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel in CE mode B of the MTC, and Fig. 15(b) shows a schematic diagram of selecting a corresponding PRB position. Specifically, in the TBS table shown in FIG. 15(a), the same number of TBS values are selected under the specific PRB index (3-6), respectively. Figure 15(b) determines one of the PRB resource locations for the respective PRB index values (3-6). Subsequently, joint encoding can be performed for the selected TBS value and the PRB resource location, and a TBS list constructed by a total of 5 bits is obtained.

In the tenth example of the first embodiment of the present invention, specific examples of respectively selecting the TBS value and the corresponding PRB resource position are exemplified. 16(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel in CE mode B of the MTC, and FIG. 16(b) shows a schematic diagram of selecting a corresponding PRB position. Specifically, in the TBS table shown in FIG. 16(a), the TBS value is selected under the specific PRB index (5-6), respectively. Figure 16 (b) determines the PRB resource location for the respective PRB index values (5-6), wherein two optional PRB resource locations are determined for the PRB index value of 5. Subsequently, joint encoding can be performed for the selected TBS value and the PRB resource location, and a TBS list constructed by a total of 5 bits is obtained.

In the eleventh example of the first embodiment of the present invention, specific examples of respectively selecting the TBS value and the corresponding PRB resource position are exemplified. Fig. 17 (a) shows an example of selecting a TBS value from a TBS table of an uplink data channel in CE mode B of the MTC, and Fig. 17 (b) shows a schematic diagram of selecting a corresponding PRB position. Specifically, in the TBS table shown in FIG. 17(a), the TBS value is selected under the specific PRB index (3, 6), respectively. Figure 17 (b) determines the PRB resource location for the respective PRB index values (3, 6), wherein two optional PRB resource locations are determined for the PRB index value of 3. Subsequently, joint encoding can be performed for the selected TBS value and the PRB resource location, and a TBS list constructed by a total of 5 bits is obtained.

In the twelfth example of the first embodiment of the present invention, specific examples of respectively selecting the TBS value and the corresponding PRB resource position are exemplified. Fig. 18(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel in CE mode B of the MTC, and Fig. 18(b) shows a schematic diagram of selecting a corresponding PRB position. Specifically, in the TBS table shown in FIG. 18(a), the TBS value is selected under the PRB indexes 1-6, respectively. Figure 18(b) determines the PRB resource locations for respective PRB index values 1-6, wherein two alternative PRB resource locations are determined for PRB index values of 4, 5. Subsequently, joint encoding can be performed for the selected TBS value and the PRB resource location, and a TBS list constructed by a total of 5 bits is obtained.

In the thirteenth example of the first embodiment of the present invention, specific examples of respectively selecting the TBS value and the corresponding PRB resource position are exemplified. 19(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel in CE mode B of the MTC, and FIG. 19(b) shows a schematic diagram of selecting a corresponding PRB position. Specifically, in the TBS table shown in FIG. 19(a), the same number of TBS values can be selected under the

PRB indexes

3, 4, 6, respectively. Figure 19(b) determines the PRB resource locations for the respective PRB index values 3, 4, 6, respectively, where two alternative PRB resource locations are determined for the PRB index values of 3, 4. Subsequently, joint encoding can be performed for the selected TBS value and the PRB resource location, and a TBS list constructed by a total of 5 bits is obtained.

In the fourteenth example of the first embodiment of the present invention, specific examples of respectively selecting the TBS value and the corresponding PRB resource position are exemplified. 20(a) shows an example of selecting a TBS value from a TBS table of an uplink data channel in CE mode B of the MTC, and FIG. 20(b) shows a schematic diagram of selecting a corresponding PRB position. Specifically, in the TBS table shown in FIG. 20(a), different numbers of TBS values can be selected under the

PRB indexes

3, 4, and 6, respectively, wherein a larger TBS corresponding to a larger PRB index value is selected as much as possible. value. Figure 20(b) determines the PRB resource locations for the respective PRB index values 3, 4, 6, respectively, where two alternative PRB resource locations are determined for the PRB index values of 3, 4. Subsequently, joint encoding can be performed for the selected TBS value and the PRB resource location, and a TBS list constructed by a total of 5 bits is obtained.

In the fifteenth example of the first embodiment of the present invention, specific examples of respectively selecting the TBS value and the corresponding PRB resource position are exemplified. FIG. 21 shows an example of selecting a TBS value from a TBS table of an uplink data channel under CE mode A of the MTC. Specifically, in the TBS table shown in FIG. 21, the average code rate corresponding to each TBS index can be obtained by calculating the ratio of the number of bits of the TBS value to the number of PRB resources (ie, the code rate coding rate), and calculating the phase. The difference between the average bit rates between two adjacent TBS indices. Then, according to the calculated difference, 3 rows with smaller difference values (ie, three rows with TBS index values of 0, 2, and 5) are deleted, so as to ensure that CE mode A is still based on EDT through 3 bits. The TBS index value in the TBS list of Msg.3 during the random access procedure.

In the sixteenth example of the first embodiment of the present invention, specific examples of respectively selecting the TBS value and the corresponding PRB resource position are exemplified. FIG. 22 shows an example of selecting a TBS value from a TBS table of an uplink data channel under CE mode A of the MTC. Specifically, in the TBS table shown in FIG. 22, the third row with the smallest TBS index value may be deleted, so as to be able to ensure that the TBS list of Msg.3 in the EDT-based random access procedure in CE mode A is still represented by 3 bits. The TBS index value in . Certainly, the foregoing specific TBS list construction manner is only an example, and the TBS list may also be constructed by deleting the maximum 3 lines of the TBS index value or deleting the TBS index at equal intervals.

With the transport block size list construction method according to the above aspect of the present invention, it is possible to provide a TBS list for EDT-based random access Msg.3 to satisfy the demand for resource allocation and TBS value of Msg.3 in EDT transmission.

Next, a communication device according to an embodiment of the present application will be described with reference to FIG. The communication device can perform the above TBS list construction method. Since the operation of the communication device is substantially the same as the steps of the TBS list construction method described above, only a brief description thereof will be made herein, and a repeated description of the same content will be omitted.

As shown in FIG. 23, the communication device 2300 includes a selection unit 2310 and a construction unit 2320. It is to be appreciated that FIG. 23 only shows components related to the embodiments of the present application, while other components are omitted, but this is merely illustrative, and the communication device 2300 may include other components as needed. In the first embodiment of the present invention, the communication device 2300 may be any communication device that can implement the foregoing method for constructing a transport block size list, and may be, for example, a base station or a user equipment, or a core network device. Make restrictions. The TBS list constructed in the first embodiment of the present invention can be applied to a random access procedure in the Internet of Things, for example, including uplink data transmission under MTC or uplink data transmission under NB-LoT, and particularly can be applied to the Internet of Things based on Uplink data transmission of EDT's Msg.3.

The selecting unit 2310 selects a specific number of TBS values in a TBS table for the uplink data channel according to a preset rule, where the TBS table includes a TBS index indicating a row index of the TBS table and is used to indicate a physical resource. The PRB index of the block (PRB).

In the first embodiment of the present invention, the selecting unit 2310 may select a specific number of TBS values in a TBS table for the uplink data channel shown in FIG. 3 according to a preset rule.

In an implementation manner, the selecting unit 2310 may select a specific number of TBS values that are not mutually exclusive in the TBS table of the uplink control channel. For example, in the TBS table shown in FIG. 3, a plurality of TBS values that are not completely repeated may be selected according to the value of the TBS value. The number of selected TBS values may vary according to the actual application scenario, and is not limited herein. For example, in one example, the selected TBS value may be 18 TBS values that are not mutually exclusive; in another example, the selected TBS value may be 25 TBS values that are not mutually exclusive.

In another implementation manner, the selecting unit 2310 may select, in a TBS table of the uplink control channel, a TBS value corresponding to multiple TBS index values having a preset interval between each other; or on the uplink control channel. In the TBS table, a TBS value corresponding to one or more specific TBS index values is selected; or in a TBS table of the uplink control channel, one or more TBS index values having a larger or smaller TBS index value are selected. Wherein, in one example, the TBS value corresponding to the TBS index value of the TBS index values of 2, 4, 6, and 8 may be selected in the TBS table shown in FIG. 3, for example; in another example, For example, in the TBS table shown in FIG. 3, the TBS value corresponding to the TBS index value of the TBS index values of 3, 6, and 9, respectively is selected; in another example, the TBS table shown in FIG. 3 may be selected, for example. The TBS index value is a TBS value corresponding to the TBS index value of 1, 3-5, 9; in another example, a TBS with a TBS index value ranging from 3-9 may be selected in, for example, the TBS table shown in FIG. The TBS value corresponding to the index value; in another example, the TBS value corresponding to the TBS index value of the TBS index value ranging from 0-4 may be selected in a TBS table such as shown in FIG. 3; in another example The TBS value corresponding to the TBS index value of the TBS index value ranging from 6 to 10 may be selected in the TBS table shown in FIG. 3, for example. That is to say, in the first embodiment of the present invention, the TBS index corresponding to the selected TBS value may be an arbitrarily selected one or more TBS index values, which is not limited herein. In this implementation, after the row of the TBS table corresponding to the specific one or more TBS index values is selected, the corresponding PRB index value may be further selected. In an example, the selected TBS value may have the same number of TBS values included in each TBS index value; for example, the PRB index values corresponding to the selected TBS values under each TBS index value may be the same respectively. Or different. For example, the selected TBS values corresponding to the TBS index values 3-7 may respectively correspond to the same number of PRB index values, for example, each of the TBS index values respectively corresponds to 5 PRB index values. Further, when each TBS index value corresponds to the same number of PRB index values, they may respectively correspond to the same PRB index value, for example, 1-5.

In still another implementation, the selecting unit 2310 may select, in a TBS table of the uplink control channel, a TBS value corresponding to multiple PRB index values having a preset interval between each other; or on the uplink control channel. In the TBS table, a TBS value corresponding to one or more specific PRB index values is selected; or in a TBS table of the uplink control channel, one or more TBS index values having a larger or smaller PRB index value are selected. Wherein, in one example, the TBS value corresponding to the PRB index value of the 2, 4, and 6 PRB index values may be selected in the TBS table shown in FIG. 3; for example, in another example, In the TBS table shown in FIG. 3, the TBS value corresponding to the PRB index value of the 1, 2, and 5 PRB index values is respectively selected; in another example, the PRB index may be selected in the TBS table shown in, for example, FIG. The value is a TBS value corresponding to the PRB index value of 1, 3-5; in another example, the PRB index value with the PRB index value ranging from 1-3 may be selected in the TBS table shown in FIG. 3, for example. The TBS value; in another example, the TBS value corresponding to the PRB index value of the PRB index value in the range of 4-6 may be selected in the TBS table shown in FIG. 3, for example. That is to say, in the first embodiment of the present invention, the PRB index corresponding to the selected TBS value may be an arbitrarily selected one or more PRB index values, which is not limited herein. In this implementation, after the column of the TBS table corresponding to the specific one or more PRB index values is selected, the corresponding TBS index value may be further selected. In an example, the selected TBS value may have the same number of TBS values included in each PRB index value; for example, the TBS index values corresponding to the selected TBS values under each PRB index value may be the same respectively. Or different. For example, the selected TBS values corresponding to the PRB index values 3-6 may respectively correspond to the same number of TBS index values, for example, each TBS index value respectively corresponds to 6 TBS index values. Further, when each TBS index value corresponds to the same number of TBS index values, it may correspond to the same TBS index value, for example, 7-9.

In the first embodiment of the present invention, it is considered that in the CE mode B of the MTC, the EDT-based random access procedure may have up to 936 bits of uplink data transmission, and therefore, for the TBS value in the CE mode B of the MTC. During the selection process, at least one TBS value greater than or equal to 936 bits is required. In the CE mode A of the MTC, the EDT-based random access procedure can have up to 1032 bits of uplink data transmission. Therefore, in the CE mode A of the MTC, the selection of the TBS value needs to include at least 1032 bits. The TBS value. In addition, when the maximum TBS value selected by the selecting unit 2310 for constructing the TBS list is not enough, the access restriction may be performed on the user equipment using the EDT mode in an additional manner to avoid random access in the EDT mode. The data packet transmitted by the user equipment is too large and the transmission cannot be performed.

The building unit 2320 may construct one or more TBS lists according to the selected TBS value, the TBS list being used for a random access procedure based on advanced data transmission.

Specifically, in the first embodiment of the present invention, the TBS list may be constructed according to at least the TBS value selected at the selecting unit 2310, and the TBS list may be applied to Msg.3 of the EDT-based random access procedure for The transmission of upstream data. In one implementation, when constructing the TBS list, all of the TBS values selected in the selection unit 2310 may be based; in another implementation, when the TBS list is constructed, the selection may be based on the selection unit 2310. Based on the TBS value, one or more TBS values are additionally selected to construct a TBS list. For example, in one example, construction unit 2320 can use a particular number of TBS values that are not repeated in the TBS table of the uplink control channel to construct a TBS list; in another example, building unit 2320 can After selecting a specific number of TBS values that do not overlap each other, one or more repeated TBS values are additionally selected according to the requirements of the actual application scenario to jointly construct a TBS list. In one example, the TBS list constructed by the building unit 2320 may be one; in another example, the TBS list constructed by the building unit 2320 may be two or more, so that in random access, according to the actual In an application scenario, the base station and/or the user equipment select one of the plurality of TBS lists for random access of the EDT.

In the first embodiment of the present invention, the constructing unit 2320 may determine a PRB resource corresponding to the PRB index value according to the PRB index value corresponding to the selected specific number of TBS values. Optionally, the TBS list may be Includes the determined PRB resources. FIG. 6 is a diagram showing the number of PRB resources and the location of PRB resources according to the first embodiment of the present invention. As shown in FIG. 6 , in the MTC, a maximum of six PRB resource locations may be allocated, and the probability and specific allocation manner of the PRB resource locations that are different for different PRB resource numbers are also different. For example, when the number of PRB resources is 1, it can be allocated to 6 resource locations of 0-5, respectively, and has the possibility of 6 resource allocations; and when the number of PRB resources is 5, it can be allocated respectively at {0, 1 Two resource locations, 2, 3, 4} and {1, 2, 3, 4, 5}, have the possibility of two resource allocations. Optionally, after the possibility of selecting or determining one or more PRB resource allocation manners for the PRB index value corresponding to the selected TBS value, in one example, the selected TBS value may be selected according to The TBS list is separately encoded and the PRB resources are separately encoded, that is, the correspondence between the number of PRB resources and the allocation location and the correspondence between the TBS index, the PRB index, and the TBS value can be separately constructed to obtain a TBS list. In another example, the TBS list may also be constructed according to the joint encoding of the selected TBS value and the PRB resource, that is, the PRB resource allocation location, the TBS index, the PRB index, and the TBS value may be jointly encoded. A correspondence between each parameter is generated to construct a TBS list. In still another example, the TBS list may be constructed according to joint coding of the selected TBS value and the number of retransmissions, or may be constructed according to the selected TBS value, the PRB resource allocation location, and the number of retransmissions. . The content, quantity, and type of each parameter in the constructed TBS list are determined according to the actual application scenario, and are not limited herein.

In the first embodiment of the present invention, in the related indication of the TBS for Msg.3 in the prior art, there are three indication bits for the number of PRBs and the location of the PRB resources, and for the PRB index and the TBS index in the TBS table. There are two indication bits in the TBS value table. It can be seen that there are five TBS related indication bits of the existing Msg.3. In order to minimize the number of indication bits of the Msg.3 in the EDT-based random access procedure, the indication bit of the construction unit 2320 in the first embodiment of the present invention may also be less than or equal to 5 for the constructed TBS list. One. This means that in the first embodiment of the present invention, in order to minimize the complexity of decoding at the receiving end of the Msg.3 uplink data transmission and to minimize resource waste, it is desirable to be able to increase the Msg.3 with respect to the TBS indication bit. In the case of a number, up to 32 states are used to indicate as many TBS value states as possible.

With the communication device according to the above aspect of the present invention, it is possible to provide a TBS list for EDT-based random access Msg.3 to satisfy the demand for resource allocation and TBS value of Msg.3 in EDT transmission.

(Second embodiment)

A second embodiment of the present invention provides a random access method, which is applied to a user equipment. First, a random access method performed by a user equipment according to a second embodiment of the present invention will be described with reference to FIG. A flow diagram of the random access method 2400 is shown in FIG.

As shown in FIG. 24, in step S2401, the indication information of the advance data transmission sent by the base station is received, and the indication information is located in a reserved bit in the random access response.

In this step, the UE receives indication information sent by the base station to indicate whether to perform advanced data transmission in the random access procedure. Specifically, the indication information may be located in a reserved bit R of the MAC RAR in the PDSCH. 25 shows a MAC RAR diagram in accordance with a second embodiment of the present invention, where R indicates reserved bits in the MAC RAR.

In step S2402, it is determined according to the indication information whether early data transmission is performed in the random access procedure.

In an implementation manner, when the indication information in the MAC RAR received by the UE is 0, it may be determined that the base station indicates the data transmission that the UE performs in the random access procedure; and when the UE receives the information in the MAC RAR. When the indication information is 1, the base station may be determined to indicate that the UE does not perform the extracted data transmission during the random access procedure. Of course, vice versa.

With the random access method according to the above aspect of the present invention, it is possible to cause the UE to determine whether to perform advanced data transmission in the random access procedure according to the indication of the base station.

A second embodiment of the present invention provides a random access method, which is applied to a base station. First, a random access method performed by a base station according to a second embodiment of the present invention will be described with reference to FIG. FIG. 26 shows a flow chart of the random access method 2600.

As shown in FIG. 26, in step S2601, indication information of advance data transmission is generated, and the indication information is located in a reserved bit in the random access response.

In this step, the base station generates indication information indicating whether to perform advanced data transmission in the random access procedure. Specifically, the indication information may be located in a reserved bit R of the MAC RAR in the PDSCH. 25 shows a MAC RAR diagram in accordance with a second embodiment of the present invention, where R indicates reserved bits in the MAC RAR.

In step S2602, the indication information is sent, so that the UE determines, according to the indication information, whether to perform advanced data transmission in the random access procedure.

In an implementation manner, when the indication information in the MAC RAR sent by the base station is 0, the extracted data transmission may be instructed by the UE in the random access procedure; and the indication information in the MAC RAR sent by the base station is 1 At the time, the UE may be instructed not to perform the extracted data transmission during the random access procedure. Of course, vice versa.

With the random access method according to the above aspect of the present invention, it is possible to cause the UE to judge whether or not to perform advanced data transmission in the random access procedure according to the indication of the base station.

Next, a UE according to a second embodiment of the present application will be described with reference to FIG. The UE can perform the random access method described above. Since the operation of the UE is substantially the same as the steps of the random access method described above, only a brief description thereof will be made herein, and a repeated description of the same content will be omitted.

As shown in FIG. 27, the UE 2700 includes a receiving unit 2710 and a determining unit 2720. It is to be appreciated that FIG. 27 only shows components related to embodiments of the present application, while other components are omitted, but this is merely illustrative, and the UE 2700 may include other components as needed.

The receiving unit 2710 receives the indication information of the advanced data transmission sent by the base station, where the indication information is located in a reserved bit in the random access response.

The receiving unit 2710 receives the indication information sent by the base station to indicate whether to perform advanced data transmission in the random access procedure. Specifically, the indication information may be located in a reserved bit R of the MAC RAR in the PDSCH. 25 shows a MAC RAR diagram in accordance with a second embodiment of the present invention, where R indicates reserved bits in the MAC RAR.

The determining unit 2720 determines, according to the indication information, whether to perform advanced data transmission in the random access procedure.

In an implementation manner, when the determining unit 2720 determines that the indication information in the MAC RAR is 0, it may be determined that the base station indicates that the UE performs advanced data transmission in the random access procedure; and when the indication information in the MAC RAR is 1. When the base station is instructed to indicate that the UE does not perform advanced data transmission during the random access process, only the traditional Msg.3 information is transmitted in the Msg.3. Of course, vice versa.

With the UE according to the above aspect of the present invention, the UE can be caused to judge whether or not to perform advanced data transmission in the random access procedure according to the indication of the base station.

Next, a base station according to a second embodiment of the present application will be described with reference to FIG. The base station can perform the random access method described above. Since the operation of the base station is substantially the same as the steps of the random access method described above, only a brief description thereof will be made herein, and a repeated description of the same content will be omitted.

As shown in FIG. 28, the base station 2800 includes a generating unit 2810 and a transmitting unit 2820. It is to be appreciated that FIG. 28 only shows components related to embodiments of the present application, while other components are omitted, but this is merely illustrative, and base station 2800 can include other components as desired.

The generating unit 2810 generates indication information for indicating whether or not advance data transmission is performed in the random access procedure. Specifically, the indication information may be located in a reserved bit R of the MAC RAR in the PDSCH. 25 shows a MAC RAR diagram in accordance with a second embodiment of the present invention, where R indicates reserved bits in the MAC RAR.

The sending unit 2820 sends the indication information, so that the UE determines, according to the indication information, whether to perform advanced data transmission in the random access procedure.

In an implementation manner, when the indication information in the MAC RAR sent by the base station is 0, the UE may be instructed to perform advanced data transmission in the random access procedure; and the indication information in the MAC RAR sent by the base station is 1 In time, the UE may be instructed not to perform advanced data transmission during the random access process, and only transmit the traditional Msg.3 information in the Msg.3. Of course, vice versa.

With the base station according to the above aspect of the present invention, it is possible to cause the UE to determine whether to perform advanced data transmission in the random access procedure according to the indication of the base station.

(Third embodiment)

A third embodiment of the present invention provides a TBS list method, which is applied to a communication device. First, a TBS list selection method performed by a communication device according to a third embodiment of the present invention will be described with reference to FIG. FIG. 29 shows a flow chart of the TBS list selection method 2900. In the third embodiment of the present invention, the communication device may be any communication device capable of implementing the foregoing method for selecting a transport block size list, and may be, for example, a base station or a user equipment, and may also be a core network device. limit. The TBS list in the third embodiment of the present invention can be applied to a random access procedure in the Internet of Things, for example, including uplink data transmission under MTC or uplink data transmission under NB-LoT, and particularly can be applied to EDT based on EDT. Uplink data transmission for Msg.3.

As shown in FIG. 29, in step S2901, one of the TBS lists is selected among the plurality of TBS lists, and the selected TBS list is used for data transmission in the random access procedure.

In this step, a TBS list for data transmission in a random access procedure may be selected among a plurality of TBS lists. Alternatively, a TBS list for data transmission of the EDT-based random access procedure may be selected among a plurality of TBS lists. Specifically, the plurality of TBS lists may include the TBS list enumerated in the respective examples in the first embodiment of the present invention. The TBS list (such as the first example) that is separately encoded for the TBS value and the PRB resource location, or the TBS list that is jointly encoded for the TBS value and the PRB resource location (such as the tenth example, etc.) may be used. The location of the PRB resource corresponding to the number of different PRBs may be unique or multiple optional, and is not limited herein.

In one example, the communication device used to make the TBS list selection may be a base station; in another example, the communication device used to make the TBS list selection may also be a UE. Specifically, when the communication device is a base station, in one example, the base station can perform TBS list selection according to a user load condition in the communication system. For example, when the user load in the communication system is large and it is desired to save resources as much as possible, the PRB resource location flexibility can be relatively small, and the TBS value selects a relatively large number of TBS lists; conversely, when the user load in the communication system is small If you want to take into account the flexibility of PRB resource allocation, you can choose the PRB resource location flexibility is relatively large, and the TBS value selects a relatively small number of TBS lists. In another example, the base station may also perform TBS list selection according to a threshold value of the TBS in the different TBS list (the maximum value of the TBS value in the TBS list). For example, when the base station wishes to restrict the UE from using the smaller TBS threshold for EDT-based random access, it may select a TBS list with a relatively small TBS threshold and select its threshold or corresponding TBS list. Notifying the UE, so that only the UE whose data packet size is smaller than the threshold can perform random access; conversely, when the base station wants to support only the UE with a large TBS threshold for random access, the TBS gate can be selected. A list of TBSs with relatively large limits.

When the communication device for TBS list selection is a UE, in one example, the UE may select a TBS list having different TBS threshold values according to the size of the data packet to be transmitted in the random access procedure. For example, when the data packet to be transmitted is small, a TBS list with a relatively small TBS threshold may be selected; conversely, when the data packet to be transmitted is large, a TBS list with a relatively large TBS threshold may be selected.

In step S2902, information related to the selected TBS list is transmitted.

When the base station performs the selection of the TBS list, in one example, the base station may notify the UE of information related to the selected TBS list through a System Information Block (SIB). For example, the TBS list 1 can be selected with an SIB value of 1, and the TBS list 2 can be selected with a SIB value of zero. As another example, the base station can utilize the SIB to transmit threshold information for its determined TBS list to implicitly indicate to the UE its selected TBS list. In another example, the base station may also transmit information related to the selected TBS list based on the random access response RAR. Alternatively, the base station may select a TBS list according to a reserved bit R of the MAC RAR in the PDSCH. For example, the TBS list 1 can be selected with a value of 1 in R, and the TBS list 2 can be selected by a value of 0 in R. In still another example, the base station may also transmit information related to the selected TBS list based on redundant bits in the MPDCCH. Optionally, the base station may indicate the selected TBS list according to the HARQ Process Number, the New Data Indicator, and/or the HARQ-ACK resource offset. For example, the TBS list 1 can be selected with a value of 1 for some redundant bits, and the TBS list 2 can be selected with a value of 0 for some redundant bits.

When the UE performs the selection of the TBS list, in one example, the UE may report the selected TBS list to the base station by means of an implicit indication. For example, the UE may implicitly indicate the selected TBS list by the resource location where the RACH preamble is located. Optionally, when the RACH preamble resource location sent by the UE is A, it may mean that the TBS list 1 is selected; and when the RACH preamble resource location sent by the UE is B, it may mean that the TBS list 2 is selected. .

With the TBS list selection method according to the above aspect of the present invention, an appropriate TBS list can be selected among a plurality of selectable TBS lists for EDT-based random access.

Next, a communication device according to a third embodiment of the present application will be described with reference to FIG. The communication device can perform the above TBS list selection method. Since the operation of the communication device is substantially the same as the steps of the TBS list selection method described above, only a brief description thereof will be made herein, and a repeated description of the same content will be omitted.

As shown in FIG. 30, the communication device 3000 includes a selection unit 3010 and a transmission unit 3020. It is to be appreciated that FIG. 30 only shows components related to embodiments of the present application, while other components are omitted, but this is merely illustrative, and the communication device 3000 may include other components as needed. In the third embodiment of the present invention, the communication device may be any communication device capable of implementing the foregoing method for selecting a transport block size list, and may be, for example, a base station or a user equipment, and may also be a core network device. limit. The TBS list in the third embodiment of the present invention can be applied to a random access procedure in the Internet of Things, for example, including uplink data transmission under MTC or uplink data transmission under NB-LoT, and particularly can be applied to EDT based on EDT. Uplink data transmission for Msg.3.

The selecting unit 3010 selects one of the TBS lists among the plurality of TBS lists, and the selected TBS list is used for data transmission in the random access process.

The selecting unit 3010 may select a TBS list for data transmission in a random access procedure among a plurality of TBS lists. Alternatively, the selection unit 3010 may select a TBS list for data transmission of the EDT-based random access procedure among the plurality of TBS lists. Specifically, the plurality of TBS lists may include the TBS list enumerated in the respective examples in the first embodiment of the present invention. The TBS list (such as the first example) that is separately encoded for the TBS value and the PRB resource location may be a TBS list (such as the tenth example, etc.) that is jointly encoded for the TBS value and the PRB resource location. The location of the PRB resource corresponding to the number of different PRBs may be unique or multiple optional, and is not limited herein.

In one example, the communication device 3000 for performing TBS list selection may be a base station; in another example, the communication device 3000 for performing TBS list selection may also be a UE. Specifically, when the communication device 3000 is a base station, in one example, the selection unit 3010 can perform TBS list selection according to a user load condition in the communication system. For example, when the user load in the communication system is large and it is desired to save resources as much as possible, the PRB resource location flexibility can be relatively small, and the TBS value selects a relatively large number of TBS lists; conversely, when the user load in the communication system is small If you want to take into account the flexibility of PRB resource allocation, you can choose the PRB resource location flexibility is relatively large, and the TBS value selects a relatively small number of TBS lists. In another example, the base station may also perform TBS list selection according to a threshold value of the TBS in the different TBS list (the maximum value of the TBS value in the TBS list). For example, when the base station wishes to restrict the UE from using the smaller TBS threshold for EDT-based random access, it may select a TBS list with a relatively small TBS threshold and select its threshold or corresponding TBS list. Notifying the UE, so that only the UE whose data packet size is smaller than the threshold can perform random access; conversely, when the base station wants to support only the UE with a large TBS threshold for random access, the TBS gate can be selected. A list of TBSs with relatively large limits.

When the communication device for TBS list selection is a UE, in one example, the selection unit 3010 may select a TBS list having different TBS threshold values according to the size of the data packet to be transmitted in the random access procedure. For example, when the data packet to be transmitted is small, a TBS list with a relatively small TBS threshold may be selected; conversely, when the data packet to be transmitted is large, a TBS list with a relatively large TBS threshold may be selected.

The transmitting unit 3020 transmits information related to the selected TBS list.

When the base station performs the selection of the TBS list, in one example, the transmitting unit 3020 may notify the UE of information related to the selected TBS list through a System Information Block (SIB). For example, the TBS list 1 can be selected with an SIB value of 1, and the TBS list 2 can be selected with a SIB value of zero. For another example, the transmitting unit 3020 may use the SIB to transmit the threshold information of the TBS list determined by the SIB to implicitly indicate the UE's selected TBS list. In another example, the transmitting unit 3020 can also transmit information related to the selected TBS list according to the random access response RAR. Alternatively, the base station may select a TBS list according to a reserved bit R of the MAC RAR in the PDSCH. For example, the TBS list 1 can be selected with a value of 1 in R, and the TBS list 2 can be selected by a value of 0 in R. In still another example, the transmitting unit 3020 may further transmit information related to the selected TBS list according to redundant bits in the MPDCCH. Optionally, the base station may indicate the selected TBS list according to the HARQ Process Number, the New Data Indicator, and/or the HARQ-ACK resource offset. For example, the TBS list 1 can be selected with a value of 1 for some redundant bits, and the TBS list 2 can be selected with a value of 0 for some redundant bits.

When the UE performs the selection of the TBS list, in an example, the sending unit 3020 may report the selected TBS list to the base station by means of an implicit indication. For example, the sending unit 3020 may implicitly indicate the selected TBS list by the resource location where the RACH preamble is located. Optionally, when the RACH preamble resource location sent by the UE is A, it may mean that the TBS list 1 is selected; and when the RACH preamble resource location sent by the UE is B, it may mean that the TBS list 2 is selected. .

With the communication device according to the above aspect of the invention, an appropriate TBS list can be selected among a plurality of selectable TBS lists for EDT-based random access.

A user terminal or the like in an embodiment of the present invention can function as a computer that executes processing of the wireless communication method of the present invention. FIG. 31 is a diagram showing an example of a hardware configuration of a radio base station and a user terminal according to an embodiment of the present invention. The user equipment, the base station, the communication device, and the like described above may be configured as a computer device that physically includes the processor 3110, the memory 3120, the memory 3130, the communication device 3140, the input device 3150, the output device 3160, the bus 3170, and the like.

In addition, in the following description, characters such as "device" may be replaced with circuits, devices, units, and the like. The hardware structure of the user equipment, the base station, and the communication device may include one or more of the devices shown in the figure, or may not include some devices.

For example, the processor 3110 only illustrates one, but may be multiple processors. In addition, the processing may be performed by one processor, or may be performed by one or more processors simultaneously, sequentially, or by other methods. Additionally, the processor 3110 can be installed by more than one chip.

Each function in the user equipment, the base station, and the communication device is realized, for example, by reading a predetermined software (program) into hardware such as the processor 3110 or the memory 3120, thereby causing the processor 3110 to perform an operation, and the communication device The communication performed by 3140 is controlled, and the reading and/or writing of data in the memory 3120 and the memory 3130 is controlled.

The processor 3110, for example, causes the operating system to operate to control the entire computer. The processor 3110 may be configured by a central processing unit (CPU) including an interface with a peripheral device, a control device, an arithmetic device, a register, and the like.

Further, the processor 3110 reads out programs (program codes), software modules, data, and the like from the memory 3130 and/or the communication device 3140 to the memory 3120, and executes various processes in accordance therewith. As the program, a program for causing a computer to execute at least a part of the operations described in the above embodiments can be employed.

The memory 3120 is a computer readable recording medium, and may be, for example, a read only memory (ROM, Read Only Memory), a programmable read only memory (EPROM), an electrically programmable read only memory (EEPROM), or a random access memory ( At least one of RAM, Random Access Memory, and other suitable storage media. The memory 1620 may also be referred to as a register, a cache, a main memory (primary storage device), or the like. The memory 3120 can store an executable program (program code), a software module, and the like for implementing the wireless communication method according to the embodiment of the present invention.

The memory 3130 is a computer readable recording medium, and may be, for example, a flexible disk, a soft (registered trademark) disk (floppy disk), a magneto-optical disk (for example, a CD-ROM (Compact DiscROM), etc.), and a digital universal CD, Blu-ray (registered trademark) disc, removable disk, hard drive, smart card, flash device (eg card, stick, key driver), magnetic stripe, database, server And at least one of other suitable storage media. Memory 3130 may also be referred to as an auxiliary storage device.

The communication device 3140 is hardware (transmission and reception device) for performing communication between computers through a wired and/or wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, and the like, for example. The communication device 1640 may include a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc., in order to implement, for example, Frequency Division Duplex (FDD) and/or Time Division Duplex (TDD).

The input device 3150 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 3160 is an output device (for example, a display, a speaker, a light emitting diode (LED) lamp, etc.) that performs an output to the outside. In addition, the input device 3150 and the output device 3160 may also be an integrated structure (for example, a touch panel).

Further, each device such as the processor 3110, the memory 3120, and the like are connected by a bus 3170 for communicating information. The bus 3170 may be composed of a single bus or a different bus between devices.

In addition, the user equipment, the base station, and the communication device may include a microprocessor, a digital signal processor (DSP, Digital Signal Processor), an application specific integrated circuit (ASIC), a programmable logic device (PLD, Programmable Logic Device), and a field programmable gate array ( Hardware such as FPGA, FieldProgrammableGateArray), etc., can realize some or all of each functional block through the hardware. For example, processor 1610 can be installed by at least one of these hardware.

(Modification)

In addition, the terms used in the present specification and/or the terms required for understanding the present specification may be interchanged with terms having the same or similar meanings. For example, the channel and/or symbol can also be a signal (signaling). In addition, the signal can also be a message. The reference signal may also be simply referred to as RS (Reference Signal), and may also be referred to as a pilot (Pilot), a pilot signal, or the like according to applicable standards. In addition, a component carrier (CC, Component Carrier) may also be referred to as a cell, a frequency carrier, a carrier frequency, or the like.

Further, the radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting the radio frame may also be referred to as a subframe. Further, a subframe may be composed of one or more time slots in the time domain. The subframe may be a fixed length of time (eg, 1 ms) that is independent of the numerology.

Further, the time slot may be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA, Single Carrier Frequency Division Multiple Access) symbols, etc.) in the time domain. In addition, the time slot can also be a time unit based on parameter configuration. In addition, the time slot may also include a plurality of minislots. Each minislot may be composed of one or more symbols in the time domain. In addition, a minislot can also be referred to as a sub-time slot.

Radio frames, subframes, time slots, mini-slots, and symbols all represent time units when signals are transmitted. Radio frames, subframes, time slots, mini-slots, and symbols can also use other names that correspond to each other. For example, one subframe may be referred to as a transmission time interval (TTI, TransmissionTimeInterval), and multiple consecutive subframes may also be referred to as a TTI, and one slot or one minislot may also be referred to as a TTI. That is to say, the subframe and/or the TTI may be a subframe (1 ms) in the existing LTE, or may be a period shorter than 1 ms (for example, 1 to 13 symbols), or may be a period longer than 1 ms. In addition, a unit indicating a TTI may also be referred to as a slot, a minislot, or the like instead of a subframe.

Here, TTI refers to, for example, a minimum time unit scheduled in wireless communication. For example, in the LTE system, the radio base station performs scheduling for all user terminals to allocate radio resources (bandwidth, transmission power, etc. usable in each user terminal) in units of TTIs. In addition, the definition of TTI is not limited to this.

The TTI may be a channel-coded data packet (transport block), a code block, and/or a codeword transmission time unit, or may be a processing unit such as scheduling, link adaptation, or the like. In addition, when a TTI is given, the time interval (e.g., the number of symbols) actually mapped to the transport block, code block, and/or codeword may also be shorter than the TTI.

In addition, when one time slot or one mini time slot is called TTI, more than one TTI (ie, more than one time slot or more than one micro time slot) may also become the scheduled minimum time unit. Further, the number of slots (the number of microslots) constituting the minimum time unit of the scheduling can be controlled.

A TTI having a length of 1 ms may also be referred to as a regular TTI (TTI in LTE Rel. 8-12), a standard TTI, a long TTI, a regular subframe, a standard subframe, or a long subframe. A TTI shorter than a conventional TTI may also be referred to as a compressed TTI, a short TTI, a partial TTI (partial or fractional TTI), a compressed subframe, a short subframe, a minislot, or a subslot.

In addition, a long TTI (eg, a regular TTI, a subframe, etc.) may be replaced with a TTI having a time length exceeding 1 ms, and a short TTI (eg, a compressed TTI, etc.) may also be shorter than a TTI length longer than a long TTI and greater than 1 ms. Replace the TTI length of the TTI.

A resource block (RB, ResourceBlock) is a resource allocation unit of a time domain and a frequency domain, and may include one or more consecutive subcarriers (subcarriers) in the frequency domain. In addition, the RB may include one or more symbols in the time domain, and may also be one slot, one minislot, one subframe, or one TTI. A TTI and a subframe may each be composed of one or more resource blocks. In addition, one or more RBs may also be referred to as a physical resource block (PRB, Physical RB), a sub-carrier group (SCG), a resource element group (REG, a resource element group), a PRG pair, an RB pair, and the like.

In addition, a resource block may also be composed of one or more resource elements (RE, ResourceElement). For example, one RE can be a subcarrier and a symbol of a radio resource area.

In addition, the above-described configurations of radio frames, subframes, time slots, mini-slots, symbols, and the like are merely examples. For example, the number of subframes included in the radio frame, the number of slots of each subframe or radio frame, the number of microslots included in the slot, the number of symbols and RBs included in the slot or minislot, and the number of RBs included in the RB The number of subcarriers, the number of symbols in the TTI, the symbol length, and the length of the cyclic prefix (CP, Cyclic Prefix) can be variously changed.

Further, the information, parameters, and the like described in the present specification may be expressed by absolute values, may be represented by relative values with predetermined values, or may be represented by other corresponding information. For example, wireless resources can be indicated by a specified index. Further, the formula or the like using these parameters may be different from those explicitly disclosed in the present specification.

The names used for parameters and the like in this specification are not limitative in any respect. For example, various channels (Physical Uplink Control Channel (PUCCH), Physical Downlink Control Channel (PDCCH), and physical downlink control channel (PDCCH)) and information units can be identified by any appropriate name, and thus The various names assigned by such channels and information elements are not limiting in any way.

The information, signals, and the like described in this specification can be expressed using any of a variety of different techniques. For example, data, commands, instructions, information, signals, bits, symbols, chips, etc., which may be mentioned in all of the above description, may pass voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of them. Combined to represent.

Further, information, signals, and the like may be output from the upper layer to the lower layer, and/or from the lower layer to the upper layer. Information, signals, etc. can be input or output via a plurality of network nodes.

Information or signals input or output can be stored in a specific place (such as memory) or managed by a management table. Information or signals input or output may be overwritten, updated or supplemented. The output information, signals, etc. can be deleted. The input information, signals, etc. can be sent to other devices.

The notification of the information is not limited to the mode/embodiment described in the specification, and may be performed by other methods. For example, the notification of the information may be through physical layer signaling (for example, Downlink Control Information (DCI), uplink control information (UCI, Uplink Control Information), upper layer signaling (eg, Radio Resource Control (RRC), RRC (Radio Resource Control) signaling, Broadcast information (Master Information Block (MIB), System Information Block (SIB), Media Access Control (MAC), other signals, or a combination thereof is implemented.

Further, the physical layer signaling may be referred to as L1/L2 (Layer 1/Layer 2) control information (L1/L2 control signal), L1 control information (L1 control signal), and the like. In addition, the RRC signaling may also be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like. Furthermore, the MAC signaling can be notified, for example, by a MAC Control Unit (MAC CE).

Further, the notification of the predetermined information (for example, the notification of "X") is not limited to being explicitly performed, and may be performed implicitly (for example, by not notifying the predetermined information or by notifying the other information).

Regarding the determination, it can be performed by a value (0 or 1) represented by 1 bit, or by a true or false value (boolean value) represented by true (true) or false (false), and can also be compared by numerical values ( For example, comparison with a predetermined value).

Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, should be interpreted broadly to mean commands, command sets, code, code segments, program code, programs, sub- Programs, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, steps, functions, and the like.

Further, software, commands, information, and the like may be transmitted or received via a transmission medium. For example, when using wired technology (coax, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to send software from a website, server, or other remote source These wired technologies and/or wireless technologies are included within the definition of the transmission medium.

Terms such as "system" and "network" used in this specification are used interchangeably.

In the present specification, "radio base station (BS, BaseStation)", "radio base station", "eNB", "gNB", "cell", "sector", "cell group", "carrier", and "component carrier" Such terms are used interchangeably. A radio base station is sometimes referred to by a fixed station, a NodeB, an eNodeB (eNB), an access point, a transmission point, a reception point, a femto cell, a small cell, and the like.

A wireless base station can accommodate one or more (eg, three) cells (also referred to as sectors). When a wireless base station accommodates multiple cells, the entire coverage area of the wireless base station can be divided into multiple smaller areas, and each smaller area can also pass through a wireless base station subsystem (for example, a small indoor wireless base station (radio-radio) Head (RRH, Remote RadioHead))) to provide communication services. The term "cell" or "sector" refers to a part or the whole of the coverage area of a radio base station and/or a radio base station subsystem that performs communication services in the coverage.

In this specification, terms such as "mobile station (MS, MobileStation)", "user terminal", "user device (UE, UserEquipment)", and "terminal" are used interchangeably. A radio base station is sometimes referred to by a fixed station, a NodeB, an eNodeB (eNB), an access point, a transmission point, a reception point, a femto cell, a small cell, and the like.

Mobile stations are also sometimes used by those skilled in the art as subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless Terminals, remote terminals, handsets, user agents, mobile clients, clients, or several other appropriate terms are used.

In addition, the wireless base station in this specification can also be replaced with a user terminal. For example, each mode/embodiment of the present invention can be applied to a configuration in which communication between a radio base station and a user terminal is replaced with communication between a plurality of user-to-device (D2D) devices. At this time, the function of the base station 1500 described above can be regarded as a function of the user equipment 1400. In addition, words such as "upstream" and "downstream" can also be replaced with "side". For example, the uplink channel can also be replaced with a side channel.

Similarly, the user terminal in this specification can also be replaced with a base station. At this time, the function of the user equipment 1400 described above can be regarded as a function of the wireless base station 1500.

In the present specification, it is assumed that a specific operation performed by the radio base station may be performed by an upper node (upper node) depending on the situation. Obviously, in a network composed of one or more network nodes (network nodes) having a radio base station, various operations performed for communication with the terminal can pass through one or more of the radio base station and the radio base station. The network node may be considered, for example, a Mobility Management Entity (MME), a Serving-Gateway (S-GW, etc.), but not limited thereto, or a combination thereof.

The respective modes/embodiments described in the present specification may be used singly or in combination, and may be switched during use to be used. Further, the processing steps, sequences, flowcharts, and the like of the respective aspects/embodiments described in the present specification can be replaced unless there is no contradiction. For example, with regard to the methods described in the specification, various step units are given in an exemplary order, and are not limited to the specific order given.

The modes/embodiments described in this specification can be applied to Long Term Evolution (LTE), Advanced Long Term Evolution (LTE-A, LTE-Advanced), Long Term Evolution (LTE-B, LTE-Beyond), Super 3rd generation mobile communication system (SUPER 3G), advanced international mobile communication (IMT-Advanced), 4th generation mobile communication system (4G, 4th generation mobile communication system), 5th generation mobile communication system (5G, 5th generation mobile communication system) ), Future Radio Access (FRA), New-RAT (Radio Access Technology), New Radio (NR, New Radio), New Radio Access (NX), Next generation wireless access (FX, Future generation radio access), Global System for Mobile Communications (GSM (registered trademark), Global System for Mobile communications), Code Division Multiple Access 2000 (CDMA2000), Super Mobile Broadband (UMB, Ultra) Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra Wideband (UWB, Ultra-WideBand), Bluetooth (Blueto Oth (registered trademark), systems of other suitable wireless communication methods, and/or next generation systems that are extended based on them.

The description "as is" used in the present specification does not mean "based only" unless it is clearly stated in other paragraphs. In other words, the term "according to" means both "based only on" and "at least based on".

Any reference to a unit using the names "first", "second", etc., as used in this specification, does not fully limit the number or order of the units. These names can be used in this specification as a convenient method of distinguishing between two or more units. Thus, reference to a first element and a second element does not mean that only two elements may be employed or that the first element must prevail in the form of the second unit.

The term "determination" used in the present specification sometimes includes various actions. For example, regarding "judgment (determination)", calculation, calculation, processing, deriving, investigating, and lookingup (eg, tables, databases, or other data) can be performed. Search in the structure, ascertaining, etc. are considered to be "judgment (determination)". Further, regarding "judgment (determination)", reception (for example, receiving information), transmission (for example, transmission of information), input (input), output (output), and access (for example) may also be performed (for example, Accessing data in memory, etc. is considered to be "judgment (determination)". Further, regarding "judgment (determination)", it is also possible to consider "resolving", "selecting", selecting (choosing), establishing (comparing), comparing (comparing), etc. as "judging (determining)". That is to say, regarding "judgment (determination)", several actions can be regarded as performing "judgment (determination)".

The terms "connected" or "coupled" as used in the specification, or any variant thereof, mean any direct or indirect connection or combination between two or more units, This includes the case where there is one or more intermediate units between two units that are "connected" or "coupled" to each other. The combination or connection between the units may be physical, logical, or a combination of the two. For example, "connection" can also be replaced with "access". When used in this specification, two units may be considered to be electrically connected by using one or more wires, cables, and/or printed, and as a non-limiting and non-exhaustive example by using a radio frequency region. The electromagnetic energy of the wavelength of the region, the microwave region, and/or the light (both visible light and invisible light) is "connected" or "bonded" to each other.

When the terms "including", "comprising", and variations thereof are used in the specification or the claims, these terms are as open as the term "having". Further, the term "or" as used in the specification or the claims is not an exclusive or exclusive.

The present invention has been described in detail above, but it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in the specification. The present invention can be implemented as a modification and modification without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, the description of the specification is intended to be illustrative, and is not intended to limit the invention.

Claims

A transport block size (TBS) list construction method, applied to a communication device, comprising:

Selecting, according to a preset rule, a specific number of TBS values in a TBS table for an uplink data channel, where the TBS table includes a TBS index indicating a row index of the TBS table and indicating a physical resource block (PRB) PRB index;

One or more TBS lists are constructed based on the selected TBS value, the TBS list being used for a random access procedure based on advanced data transmission.
The method of claim 1, wherein the selecting a specific number of TBS values in a TBS table of the uplink control channel according to a preset rule comprises:

Selecting a specific number of TBS values that are not mutually exclusive in the TBS table of the uplink control channel.
The method of claim 1, wherein the selecting a specific number of TBS values in a TBS table of the uplink control channel according to a preset rule comprises:

Selecting, in a TBS table of the uplink control channel, a TBS value corresponding to a plurality of TBS index values having a preset interval between each other; or

In the TBS table of the uplink control channel, a TBS value corresponding to one or more specific TBS index values is selected.
The method of claim 1, wherein the selecting a specific number of TBS values in a TBS table of the uplink control channel according to a preset rule comprises:

Selecting, in a TBS table of the uplink control channel, a TBS value corresponding to a plurality of PRB index values having a preset interval between each other; or

In the TBS table of the uplink control channel, a TBS value corresponding to one or more specific PRB index values is selected.
The method of claim 1 wherein

The method further includes: determining a PRB resource corresponding to the PRB index value according to a PRB index value corresponding to the selected specific number of TBS values;

The TBS list includes the determined PRB resources.
The method of claim 5 wherein said constructing one or more TBS lists based on said selected TBS value comprises:

The TBS list is constructed based on separately encoding the selected TBS value and the PRB resource.
The method of claim 5 wherein said constructing one or more TBS lists based on said selected TBS value comprises:

The TBS list is constructed based on joint encoding of the selected TBS value and the PRB resource.
The method of claim 1 wherein said constructing one or more TBS lists based on the selected TBS value comprises:

The TBS list is constructed based on joint coding of the selected TBS value and the number of retransmissions.
A communication device comprising:

a selecting unit configured to select a specific number of TBS values in a Transport Block Size (TBS) table for an uplink data channel, where the TBS table includes a TBS indicating a row index of the TBS table according to a preset rule An index and a PRB index for indicating a physical resource block (PRB);

And a building unit configured to construct one or more TBS lists according to the selected TBS value, the TBS list being used for a random access procedure based on advanced data transmission.
A random access method applied to user equipment, including:

Receiving indication information of an advance data transmission sent by the base station, where the indication information is located in a reserved bit in the random access response;

Determining whether to perform advanced data transmission in the random access process according to the indication information.
A transport block size (TBS) list selection method, applied to a communication device, comprising:

Selecting one of the TBS lists in the plurality of TBS lists, and the selected TBS list is used for data transmission in the random access process;

Send information related to the selected TBS list.
The method of claim 11 wherein said generating TBS list selection information comprises:

Information related to the selected TBS list is transmitted through a system information block, a random access response, or a downlink control channel.
The method of claim 11 wherein said selecting one of the plurality of TBS lists comprises:

One of the TBS lists is selected among the plurality of TBS lists according to the size of the data packet that needs to be transmitted during the random access procedure.
The method of claim 13 wherein said transmitting information related to said selected TBS list comprises:

Information related to the selected TBS list is transmitted through the resource location where the random access channel preamble is located.
A communication device comprising:

a selecting unit, configured to select one of the TBS lists in the plurality of TBS lists, where the selected TBS list is used for data transmission in the random access process;

And a sending unit configured to send information related to the selected TBS list.