CN109392095B

CN109392095B - Terminal, base station and information transmission method

Info

Publication number: CN109392095B
Application number: CN201810142603.3A
Authority: CN
Inventors: 苏笛; 孙霏菲
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2017-08-02
Filing date: 2018-02-11
Publication date: 2024-06-18
Anticipated expiration: 2038-02-11
Also published as: EP3646656A4; EP3646656A1; KR20200027048A; CN109392095A

Abstract

The invention relates to the technical field of wireless communication, and particularly provides a terminal, a base station and an information transmission method, wherein the method comprises the following steps: the terminal judges whether the base station supports the first scheduling mode according to the configuration information of the first scheduling mode sent by the base station, if the base station supports the first scheduling mode, the terminal sends a request message and/or a capability message to the base station, then the terminal receives the scheduling information for the first scheduling mode sent by the base station, and sends or receives data according to the scheduling information of the first scheduling mode. The embodiment of the invention provides a terminal, a base station and an information transmission method, provides a new scheduling mode, and enables the terminal and the base station to transmit or receive data in the new scheduling mode.

Description

Terminal, base station and information transmission method

Technical Field

The invention relates to the technical field of wireless communication, in particular to a terminal, a base station and an information transmission method.

Background

The enhanced machine Communication technology (eMTC) is a technology type facing to the application of the internet of things, and is published in 3GPP protocol, which is earliest than Release 13, and is mainly applied to the application of the internet of things deployed in the LTE system.

Compared with the traditional wireless communication service, the application of the IOT (Internet of things) oriented by the eMTC technology has the characteristics of small data volume, infrequent service request, low time delay sensitivity, deeper coverage and the like, and is of the application types of intelligent meter reading, automatic alarming, city monitoring, logistics tracking and the like.

Compared to LTE terminals, eMTC terminals are more likely to be in a deep coverage scenario, such as a basement or underground pipe well, and thus eMTC introduces several mechanisms and techniques to enhance coverage. The most fundamental coverage enhancement techniques are to reduce the transmission bandwidth to increase the power spectral density, and to introduce duplicate transmission mechanisms.

In terms of improving the power spectrum density, the eMTC reduces the transmission bandwidth to 1080kHz, a narrow band of the eMTC is formed by 6 continuous physical resource blocks (Physical Resource Block, PRB) in an LTE system, and all physical channel scheduling of the eMTC is carried out by taking the eMTC narrow band as a unit. According to different bandwidth configurations of the LTE system, the number and the positions of eMTC narrow bands which can be deployed in the band can be different, for example, when the bandwidth of the LTE system is 3MHz, the number of eMTC narrow bands in the band is 2; when the bandwidth of the LTE system is 20MHz, the number of eMTC narrow bands in the band is 16.

In terms of coverage enhancement, in the eMTC technology, a terminal selects a coverage level (Coverage enhancement Mode, CE Mode) of a random access channel according to downlink measurement, and a base station acquires a coverage Mode of the terminal based on the coverage level of the random access channel selected by the terminal, and performs transmission of uplink and downlink traffic channels according to the coverage Mode of the terminal. The coverage modes of the terminal are divided into a Mode a (CE Mode a) and a Mode B (CE Mode B). The coverage mode A is used for supporting a general coverage scene, namely only supporting the transmission of uplink and downlink control channels and service channels without repetition or with a small number of repetition times; the coverage mode B is used for supporting a deep coverage scene, namely supporting the uplink and downlink control channels and the service channels to transmit with larger repetition times.

Under different coverage modes, the formats of uplink and downlink scheduling authorization information read by the terminal are slightly different. In Release 14 version, the uplink scheduling grant information of coverage mode B is DCI format 6-0B, and the contents included in the uplink scheduling grant information are shown in table 1:

TABLE 1

The downlink control information format 6-0B indicates a narrowband index used for Physical Uplink (Physical Uplink SHARE CHANNEL, PUSCH) transmission and a Physical resource block (Physical Resource Block, PRB) index within the narrowband in a resource block allocation message. For the user equipment of the coverage mode B, the base station schedules the uplink shared channel to use single PRB or 2PRB transmission in a narrow band so as to reduce the uplink power spectrum density and improve the coverage capability.

The next generation of machine communication systems puts higher demands on coverage enhancement, a new coverage mode has been created, but how the terminals and base stations transmit data in the new coverage mode becomes a key issue.

Disclosure of Invention

In order to overcome the technical problems or at least partially solve the technical problems, the following technical schemes are specifically proposed:

According to one aspect, an embodiment of the present invention provides a data transmission method, which is applied to a terminal, and includes:

judging whether the base station supports a first scheduling mode or not according to configuration information of the first scheduling mode sent by the base station;

the frequency domain scheduling granularity adopted by the first scheduling mode is subcarrier level scheduling.

If the base station supports a first scheduling mode, a terminal sends a request message and/or a capability message to the base station, wherein the request message is used for requesting the base station to configure the first scheduling mode for the terminal, and the capability message is used for reporting the scheduling mode supported by the terminal;

And receiving the scheduling information for the first scheduling mode sent by the base station, and carrying out data transmission or reception according to the scheduling information of the first scheduling mode.

According to another aspect, an embodiment of the present invention further provides another data transmission method, applied to a base station, including:

broadcasting a configuration message of a first scheduling mode when the base station supports the first scheduling mode;

receiving a request message and/or a capability message sent by a terminal, wherein the request message is used for requesting the base station to configure the first scheduling mode for the terminal, and the capability message is used for reporting the scheduling mode supported by the terminal;

and if the terminal scheduling mode is the first scheduling mode, transmitting scheduling information of the first scheduling mode to the terminal so that the terminal can transmit or receive data according to the scheduling information of the first scheduling mode.

According to still another aspect, an embodiment of the present invention provides a terminal, including:

the judging module is used for judging whether the base station supports the first scheduling mode according to the configuration information of the first scheduling mode sent by the base station;

The first sending module is used for sending a request message and/or a capability message to the base station when the base station supports a first scheduling mode, wherein the request message is used for requesting the base station to configure the first scheduling mode for the terminal, and the capability message is used for reporting the scheduling mode supported by the terminal;

The first receiving module is used for receiving scheduling information for a first scheduling mode sent by the base station;

And the data transmission module is used for transmitting or receiving data according to the scheduling information of the first scheduling mode received by the first receiving module.

According to still another aspect, an embodiment of the present invention provides a base station, including:

A broadcasting module, configured to broadcast a configuration message of a first scheduling mode when the base station supports the first scheduling mode;

The second receiving module is used for receiving a request message and/or a capability message sent by a terminal, wherein the request message is used for requesting the base station to configure the first scheduling mode for the terminal, and the capability message is used for reporting the scheduling mode supported by the terminal;

and the second sending module is used for sending the scheduling information of the first scheduling mode to the terminal when the terminal scheduling mode is the first scheduling mode, so that the terminal can send or receive data according to the scheduling information of the first scheduling mode.

Compared with the prior art, the terminal judges whether the base station supports the first scheduling mode according to the configuration information of the first scheduling mode sent by the base station, if the base station supports the first scheduling mode, the terminal sends a request message and/or a capability message to the base station to request the base station to configure the first scheduling mode for the terminal or report the scheduling mode supported by the terminal, and when the base station receives the request message and/or the capability message sent by the terminal and determines that the scheduling mode of the terminal is the first scheduling mode, the terminal sends the scheduling information of the first scheduling mode to the terminal, and the terminal sends or receives data according to the scheduling information of the first scheduling mode. Compared with the prior art, the invention has a new scheduling mode, namely a first scheduling mode, and when the terminal and the base station support the first scheduling mode, the base station can send the scheduling information of the first scheduling mode to the terminal, so that the terminal and the base station can send or receive data in the new scheduling mode.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

fig. 1 is a flow chart of a method for data transmission by a terminal according to an embodiment of the present invention;

fig. 2 is a flow chart of a method for data transmission by a base station according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of an interaction flow of data transmission by a terminal and a base station according to an embodiment of the present invention;

Fig. 4 is a flowchart illustrating an example of a terminal reporting an overlay mode C request (or capability) by a terminal according to an embodiment of the present invention in an implicit and explicit combination manner;

Fig. 5 is a diagram illustrating PUSCH physical resource mapping according to an embodiment of the present invention;

Fig. 6 is a flowchart illustrating an example of a terminal procedure in which a terminal reports a request (or capability) of coverage mode C in a implicit manner according to an embodiment of the present invention;

FIG. 7 is a diagram illustrating an example of a terminal flow for reporting a request (or capability) of coverage mode C in an explicit signaling manner in an embodiment of the present invention;

fig. 8 is a schematic device structure of a terminal according to an embodiment of the present invention;

Fig. 9 is a schematic diagram of an apparatus structure of a base station according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. The term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.

It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, a "terminal" or "terminal device" includes both a device of a wireless signal receiver having no transmitting capability and a device of receiving and transmitting hardware having receiving and transmitting hardware capable of bi-directional communication over a bi-directional communication link, as will be appreciated by those skilled in the art. Such a device may include: a cellular or other communication device having a single-line display or a multi-line display or a cellular or other communication device without a multi-line display; PCS (Personal Communications Service, personal communications System) that may combine voice, data processing, facsimile and/or data communications capabilities; PDA (Personal DIGITAL ASSISTANT ) that may include a radio frequency receiver, pager, internet/intranet access, web browser, notepad, calendar and/or GPS (Global Positioning System ) receiver; a conventional laptop and/or palmtop computer or other appliance that has and/or includes a radio frequency receiver. As used herein, "terminal," "terminal device" may be portable, transportable, installed in a vehicle (aeronautical, maritime, and/or land-based), or adapted and/or configured to operate locally and/or in a distributed fashion, to operate at any other location(s) on earth and/or in space. The "terminal" and "terminal device" used herein may also be a communication terminal, a network access terminal, and a music/video playing terminal, for example, may be a PDA, a MID (Mobile INTERNET DEVICE ) and/or a Mobile phone with a music/video playing function, and may also be a smart tv, a set top box, and other devices.

The next generation machine communication system puts higher requirements on coverage enhancement, and in the standardization stand of the next version of Release 15 of eMTC, it is proposed to introduce scheduling of part of PRBs supporting PUSCH, that is, PUSCH is transmitted on only a plurality of subcarriers in one PRB, so as to further improve uplink transmit power spectral density and enhance coverage capability.

The embodiment of the invention is oriented to eMTC technology, and aims to further improve the coverage capability of eMTC and support subcarrier-level scheduling. The invention relates to the design of downlink control information and the design of user behavior flow.

Fig. 1 is a flow chart of a method for data transmission according to an embodiment of the present invention.

Step 101, the terminal judges whether the base station supports the first scheduling mode according to the configuration information of the first scheduling mode sent by the base station.

The first scheduling mode and the second scheduling mode adopt different frequency domain scheduling granularity, and the frequency domain scheduling granularity adopted by the first scheduling mode is smaller than that adopted by the second scheduling mode.

Step 102, if the base station supports the first scheduling mode, the terminal sends a request message and/or a capability message to the base station.

The request message is used for requesting the base station to configure a first scheduling mode for the terminal, and the capability message is used for reporting the scheduling mode supported by the terminal.

Step 103, the terminal receives the scheduling information for the first scheduling mode sent by the base station, and performs data transmission or reception according to the scheduling information of the first scheduling mode.

Fig. 2 is a flowchart of a method for data transmission according to another embodiment of the present invention.

Step 201, when the base station supports the first scheduling mode, the base station broadcasts a configuration message of the first scheduling mode.

Step 202, the base station receives a request message and/or a capability message sent by the terminal.

Step 203, if the terminal scheduling mode is the first scheduling mode, the base station sends scheduling information of the first scheduling mode to the terminal, so that the terminal performs data transmission or reception according to the scheduling information of the first scheduling mode.

Fig. 3 is a flow chart of interaction between a terminal and a base station according to an embodiment of the present invention.

Step 301, when the base station supports a first scheduling mode, the base station broadcasts a configuration message of the first scheduling mode; step 302, the terminal judges whether the base station supports the first scheduling mode according to the configuration information of the first scheduling mode sent by the base station; step 303, if the base station supports the first scheduling mode, the terminal sends a request message and/or a capability message to the base station, where the request message is used to request the base station to configure the first scheduling mode for the terminal, and the capability message is used to report the scheduling mode supported by the terminal; step 304, the base station receives a request message and/or a capability message sent by the terminal, where the request message is used to request the base station to configure a first scheduling mode for the terminal, and the capability message is used to report the scheduling mode supported by the terminal; step 305, if the terminal scheduling mode is the first scheduling mode, the base station sends scheduling information of the first scheduling mode to the terminal, so that the terminal performs data sending or receiving according to the scheduling information of the first scheduling mode; step 306, the terminal receives the scheduling information for the first scheduling mode sent by the base station, and performs data transmission or reception according to the scheduling information of the first scheduling mode.

Further, the scheduling mode includes a coverage mode.

Further, the configuration information of the first scheduling mode includes:

The base station supports an indication message of a first scheduling mode; and/or a physical random access channel PRACH coverage class configuration message corresponding to the first scheduling mode;

The physical random access channel PRACH coverage grade configuration message corresponding to the first scheduling mode comprises at least one of the following:

PRACH transmission repetition number; a preamble sequence index; PRACH frequency modulation offset; a physical downlink control channel (MTC PHYSICAL Downlink control channel, MPDCCH) search space offset for machine type communication; reference signal received Power (REFERENCE SIGNAL RECEIVING Power, RSRP) threshold corresponding to the PRACH coverage class.

Further, before step 305, the method further includes: the terminal receives a confirmation message sent by the base station, wherein the confirmation message is used for informing the terminal, and then the terminal adopts a first scheduling mode for scheduling; and/or the terminal receives the scheduling mode configuration information sent by the base station and determines the scheduling mode adopted by the base station later according to the scheduling mode configuration information.

Further, step 306 includes: the terminal monitors downlink control information of a first scheduling mode sent by the base station, wherein the downlink control information comprises downlink control information of a first format and downlink control information of a second format, the downlink control information of the first format is used for bearing uplink authorization information, and the downlink control information of the second format is used for bearing downlink authorization information; the terminal performs uplink transmission according to the downlink control information of the first format, and/or the terminal performs downlink reception according to the downlink control information of the second format.

Further, the step of "the terminal sends the configuration request message and/or the capability message to the base station" in step 303 includes: the terminal determines PRACH coverage grade; if the scheduling mode corresponding to the PRACH coverage level is the first scheduling mode, carrying a configuration request message and/or a capability message in a random access request message sent to a base station; if the scheduling modes corresponding to the PRACH coverage level comprise at least two scheduling modes, carrying a configuration request message and/or a capability message in a connection establishment request message sent to the base station.

Wherein the at least two scheduling modes include a first scheduling mode.

Specifically, the terminal determines a PRACH coverage class; if the scheduling mode corresponding to the PRACH coverage level is the first scheduling mode, carrying a configuration request message and/or a capability message in a random access request message sent to a base station, wherein the method specifically comprises the following steps: the terminal determines PRACH coverage levels of a first scheduling mode and a second scheduling mode in the at least two scheduling modes according to a downlink measurement result, and receives and reads the content of a random access response message according to the second coverage mode, wherein at least one PRACH coverage level of the second coverage mode is the same as the PRACH coverage level of the first coverage mode; the terminal sends a connection establishment request message to the base station, wherein the connection establishment request message carries a configuration request message and/or a capability message.

Specifically, the terminal determines a PRACH coverage class; if the scheduling modes corresponding to the PRACH coverage level comprise at least two scheduling modes, carrying a configuration request message and/or a capability message in a connection establishment request message sent to the base station, wherein the step comprises the following steps:

and the terminal determines the PRACH coverage grade of the first scheduling mode according to the downlink measurement result, and sends a random access request message to the base station according to the configuration information of the PRACH coverage grade, wherein the random access request message carries the configuration request message and/or the capability message.

Further, in step 303, the step of "the terminal sends the configuration request message and/or the capability message to the base station" specifically includes: the terminal sends a connection establishment request message to the base station, wherein the connection establishment request message carries a configuration request message and/or a capability message; or if the terminal and the base station have established connection, sending a configuration request message and/or a capability message to the base station.

Further, the step of the terminal performing uplink transmission according to the downlink control information in the first format includes: and acquiring the resource allocation message from the downlink control information in the first format, and performing uplink transmission according to the resource allocation message.

Wherein, the resource allocation message comprises at least one of the following:

Narrowband indication information; physical resource block PRB indication information; subcarrier indication information; the number of resource units indicates information.

Further, if the resource allocation message obtained from the downlink control information in the first format includes a subcarrier indication message and does not include a PRB indication message, the terminal determines, according to the subcarrier indication message, that the current uplink transmission corresponds to the subcarrier and the PRB; and/or if the resource allocation message obtained from the downlink control information in the first format contains the subcarrier indication message and does not contain the resource unit number indication message, the terminal determines the subcarrier and the resource unit number corresponding to the current uplink transmission according to the subcarrier indication message.

Further, the terminal determines at least one of narrowband information, PRB information, subcarrier information and the number of resource units used for uplink transmission according to system preset information and/or a received radio resource control RRC signaling indication message.

Further, the step of uplink transmission by the terminal according to the resource allocation message includes:

The terminal determines the size of a transmission block according to the subcarrier information and the number of resource units obtained from the resource allocation message; and performs uplink transmission based on the transport block size.

Further, the terminal acquires hybrid automatic repeat request (HARQ-ACK) resource information from downlink control information in a second format, and performs Acknowledgement character ACK uplink transmission according to the HARQ-ACK resource information; or the terminal acquires the HARQ-ACK resource information from the downlink control information in the second format, and performs Negative Acknowledgement (NACK) uplink transmission according to the HARQ-ACK resource information.

Wherein the HARQ-ACK resource information includes at least one of: HARQ-ACK resource offset information; HARQ-ACK transmission repetition number indication information; HARQ-ACK scheduling delay indication information; subcarrier indication information for HARQ-ACK transmission.

Compared with the prior art, the terminal in the embodiment of the invention judges whether the base station supports the first scheduling mode according to the configuration information of the first scheduling mode sent by the base station, if the base station supports the first scheduling mode, the terminal sends a request message and/or a capability message to the base station to request the base station to configure the first scheduling mode for the terminal or is used for reporting the scheduling mode supported by the terminal, when the base station receives the request message and/or the capability message sent by the terminal and determines that the scheduling mode of the terminal is the first scheduling mode, the terminal sends the scheduling information of the first scheduling mode to the terminal, and the terminal sends or receives data according to the scheduling information of the first scheduling mode. In the embodiment of the invention, a new scheduling mode, namely a first scheduling mode, appears, and when the terminal and the base station support the first scheduling mode, the base station can send scheduling information of the first scheduling mode to the terminal, so that the terminal and the base station can send or receive data in the new scheduling mode.

Specifically, the scheduling modes may include coverage modes, and the second scheduling mode may be a corresponding scheduling mode supported in the prior art, such as coverage mode B and/or coverage mode a, and the new scheduling mode, that is, the first scheduling mode, in the embodiment of the present application may be a user coverage mode supporting subcarrier level scheduling, such as coverage mode C.

To achieve the object of the present application, the present application provides a method for implementing an eMTC system supporting subcarrier-level scheduling, the method comprising the following steps 401-403 (not labeled in the figure),

Step 401: the terminal reads configuration information of the system regarding a coverage mode supporting subcarrier-level scheduling.

Step 402: and after the terminal acquires the configuration information of the coverage mode supporting subcarrier-level scheduling, reporting a configuration request or capability.

Step 403: the terminal acquires the coverage mode which is the coverage mode supporting subcarrier level scheduling, monitors the downlink control information format of the coverage mode, and performs uplink and downlink transmission.

The method for the terminal to acquire the coverage mode is that the terminal receives a report configuration request or an Acknowledgement Character (ACK) of the capability; or the terminal receives the coverage mode scheduling information of the base station.

Example 1

In order to achieve the object of the present application, the following describes the design scheme of downlink control channel information of eMTC system supporting uplink subcarrier level scheduling.

The overlay mode supporting users with different scheduling granularity than the existing overlay mode A and overlay mode B is described as overlay mode C. For users of coverage pattern a and/or coverage pattern B, configuring coverage pattern C then means that a smaller scheduling granularity, e.g. subcarrier-level scheduling, can be supported. Thus, coverage pattern C may be considered an extended coverage pattern based on existing coverage pattern a and/or coverage pattern B. The format of the downlink control information of the coverage pattern C is 6-0C. When the coverage mode a and the coverage mode B are both configurable, the coverage mode C may support two different downlink control information formats for uplink grant, which are respectively used for supporting smaller scheduling granularity transmission of the coverage mode a user and for supporting smaller scheduling granularity transmission of the coverage mode B user.

In order to support the subcarrier-level scheduling of PUSCH, the terminal needs to obtain the following scheduling information, as shown in table 2:

TABLE 2

For the embodiment of the invention, because the bit width of the downlink control information is limited, all the information cannot be indicated in the resource allocation information, so that part of the information can be indicated in the downlink control information, and the rest of the information which cannot be indicated in the downlink control information needs to be semi-statically indicated through RRC signaling indication or implicitly indicated through a certain system rule. The specific content of each configuration information and the signaling transmission manner in table 2 are given below, and the configuration manner of the scheduling parameters may be used for subcarrier level scheduling when the coverage mode C supports the coverage mode a and/or the coverage mode B, and may also be used for a coverage mode supporting subcarrier level scheduling when the coverage mode C is configured independently. Meanwhile, the following indication method of the scheduling information can also be used for random access corresponding to support subcarrier level scheduling of a connection establishment request Message (Message 3) in a random access process.

1) Narrowband indication

The content and the bit number can multiplex the indication mode in the existing downlink control information format 6-0B, and the narrowband indication information can be indicated in the downlink control information, or can be indicated by RRC signaling, or the system agrees that the uplink transmission of the coverage mode C user uses a fixed narrowband (the implicit indication mode is an indication bit is not needed).

2) PRB indication

The content and the bit number can be multiplexed with the indication mode in the existing downlink control information format 6-0B or indicated in combination with the subcarriers, and the following subcarrier indication part can be seen as a specific mode. The PRB indication information may be indicated by RRC signaling, or fixed PRBs in the indicated narrowband may be used for uplink transmission of the system-specific coverage mode C user (in an implicit indication manner, no indication bits are needed) in addition to the indication in the downlink control information.

3) Subcarrier indication

The subcarrier indication content may include only subcarrier indexes used for PUSCH channel transmission, indexes of PRBs where the subcarriers are located are configured by PRB indication information, or PRBs located in the indicated narrowband using a fixed position. More specifically, if the number of PRBs configured by the PRB indication may be 1 or more, the terminal determines whether to further read the subcarrier indication field according to a certain rule, for example, only when the number of allocated PRBs is 1, the terminal reads the subcarrier indication field, and determines the subcarrier position allocated to the physical uplink shared channel transmission on the allocated PRBs according to the subcarrier indication. Table 3 gives several examples of subcarrier indication contents in this case:

Table 3 (a)

Table 3 (b)

Subcarrier indication field (I _sc)	Allocable subcarrier sets (n _sc)
		0–9	I_sc+1
10-13	3(I_sc-10)+{0,1,2}
		14-15	6(I_sc-14)+{0,1,2,3,4,5}

Table 3 (c)

Table 3 (d)

Table 3 (e)

Wherein, table 3 (a) and table 3 (b) indicate several states of single subcarrier, 3 subcarrier and 6 subcarrier scheduling with 5 bits and 4 bits, respectively; table 3 (c) indicates 3 subcarrier scheduling with 3 bits, 6 subcarrier scheduling and several states of 12 subcarriers; table 3 (d) indicates several states of single subcarrier, 3 subcarrier, 6 subcarrier, 12 subcarrier scheduling (single PRB) and 2PRB scheduling with 5 bits; table 3 (e) indicates several states of 3 subcarriers, 6 subcarriers, 12 subcarriers scheduling and 2PRB scheduling with 3 bits. In the case that the sub-carriers are not included in 3 (b), a plurality of sub-carriers with poorer performance are positioned at both ends of the PRB compared with 3 (a).

For the embodiment of the present invention, the subcarrier index and the PRB index allocated to PUSCH transmission may be jointly indicated, where no additional PRB index is required to be indicated, for example, table 4 gives an example of indication content in this case, where several states of single subcarrier, 3 subcarrier, 6 subcarrier, 12 subcarrier scheduling and 2PRB scheduling are jointly indicated by 6 bits, and the position of the scheduled subcarrier may be located on any PRB within one narrowband according to the indication. Wherein, table 4 may only reserve subcarrier indication fields 0-35, and is only used to jointly indicate a plurality of states of subcarrier scheduling of single subcarrier, 3 subcarrier, 6 subcarrier, and 12 subcarrier scheduling.

TABLE 4 Table 4

The specific states included in each scheduling case of each of the examples in table 3 and table 4 may be increased or decreased according to the number of bits.

For the embodiment of the present invention, the subcarrier indication information may be indicated by RRC signaling in addition to being indicated in the downlink control information.

4) Indication of resource unit number and modulation coding mode

The terminal needs to acquire the number of resource units, the modulation coding mode and the number of transmission block bits, wherein the number of transmission block bits acquired by the terminal can be indexed by the number of resource units and/or the size of the transmission block; the resource unit number may be obtained by downlink control information configuration or transport block size index.

Specifically, the implementation manner of obtaining the size of the transport block and the number of resource units may preferably be that the user obtains the index of the size of the transport block by looking up a table according to the index of the modulation coding scheme indicated by the downlink control information, and obtains the number of bits and the number of resource units of the size of the transport block by looking up a table according to the index of the size of the transport block, where one example is shown in table 5, in the downlink control information, 16 modulation coding schemes are indicated by 4 bits, corresponding to 16 transport block sizes, and the configured number of resource units may be obtained according to the correspondence between the index of the modulation coding scheme/the index of the size of the transport block and the number of resource units.

TABLE 5

The implementation manner of obtaining the size of the transmission block may preferably also be that the user obtains the index of the modulation coding mode and the index of the number of resource units respectively, obtains the index of the size of the transmission block I _TBS by looking up a table according to the index of the modulation coding mode, and obtains the size of the transmission block according to the index of the size of the transmission block I _TBS and the number of configured resource units, wherein the index of the modulation coding mode may perform explicit indication through downlink control information, for example, multiplexing the existing indication manner of the downlink control information format 6-0B; the indication mode of the resource unit number index may be explicit indication in the downlink control information, the terminal obtains the configured resource unit number by looking up a table according to the resource unit number index, for example, indicates 6 kinds of configurable resource unit numbers {1,2,3,4,5,6} with 3 bits, and then the configured resource unit number with 3 bits can support the transport block sizes supported by all coverage modes a with the same coding efficiency (when the bandwidth capability of the user is 1.4 MHz); or, 4 kinds of configurable resource unit numbers {1,2,4,6} are indicated by 2 bits, so that most of the transport block sizes supported by the coverage mode a (when the bandwidth capability of the user is 1.4 MHz) can be supported with the same coding efficiency by configuring the resource unit number by 2 bits, and the granularity of the subcarrier-level scheduling transmission duration is kept to be equal to that of the coverage mode a; or, using 1 bit to indicate 2 kinds of resource unit numbers, for example, using bit 0 to indicate the resource unit number as 1 and bit 1 to indicate the resource unit number as 2, the number of resource units can be configured by 1 bit to support the transport block size supported by all coverage modes B with the same coding efficiency; or, the terminal obtains the corresponding relation between the number of the scheduled subcarriers and the number of the resource units to obtain the resource unit number configuration, for example, the number of the resource units used in the single PRB scheduling/3 subcarrier scheduling/6 subcarrier scheduling is 2, and the number of the resource units used in the single PRB scheduling/2 PRB scheduling scene is 1.

For the embodiment of the invention, the terminal acquires the size of the transmission block according to the subcarrier indication and the resource unit number indication. If the downlink control information format 6-0C includes a scheduling condition of 2 PRBs and/or a single PRB, it may be agreed that the number of resource units is greater than 1 as an invalid indication (the number of resource units may be defined as 1ms in the case of 2PRB scheduling), and the transport block size may be obtained according to the indication mode of the downlink control information format 6-0B.

For the embodiment of the present invention, the resource unit number indication information may be indicated by RRC signaling in addition to being indicated in the downlink control information.

5) Repetition number indication/transmission subframe number indication

The terminal needs to acquire the configuration of the repetition times of the PUSCH transmission; or, the terminal may obtain the repetition number according to the configured transmission subframe number.

The repetition number may be indicated by the terminal obtaining the configured repetition number according to the repetition number index and other configuration parameters, where the other configuration parameters at least include one of the following information, the PUSCH maximum repetition number, the number of subcarriers, and the number of resource units. The maximum number of PUSCH repetitions may be configured by a higher layer, for example, "PUSCH-maxNumRepetitionCEmodeB" in the overlay mode B, and "PUSCH-maxNumRepetitionCEmodeA" in the overlay mode B, and the overlay mode C may use the configuration parameters of the overlay mode a and/or the overlay mode B, or define unique higher layer parameters.

The method for obtaining the repetition number by the terminal may preferably be that the terminal obtains the repetition number according to the repetition number index, the PUSCH maximum repetition number, the subcarrier number, and/or the resource unit number. Specifically, the terminal may obtain the repetition number set according to the configured PUSCH maximum repetition number, set to { n ₀,n₁,…,n_K }, determine the correction factor β of the repetition number according to the number of subcarriers and/or the number of resource units, and set the terminal obtain the repetition number index as i e [0, k ], and then the terminal obtain the configured repetition number as [ β·n _i ]. The method for determining the value of the correction factor beta can be preferably determined by the number of subcarriers and the number of resource units, and the calculation formula of beta can beWhere N _RU is the number of subcarriers and L _RU is the length of the resource unit (in milliseconds), for example, for the case of 3 subcarriers, the length of the resource unit is 4 milliseconds, when the number of allocated resource units is 2, the single transmission block occupies 2×4=8 milliseconds in the time domain, and compared with the transmission of the PRB level frequency domain scheduling granularity, the transmission is 8 times extended in the time domain, so β=1/8, and table 6 (a) gives the values of the correction factors under the combination of several typical subcarrier numbers and the number of resource units. The method for determining the value of the correction factor beta can be preferably determined by the number of subcarriers, and the calculation formula of the beta can beWhere L _RU is the resource unit length (in milliseconds), table 6 (b) gives the correction factor values for several typical subcarrier numbers. Or specifically, the method that the terminal obtains the repetition number according to the repetition number index, the PUSCH maximum repetition number, the subcarrier number and/or the resource unit number may be that after the terminal obtains the configuration parameter PUSCH maximum repetition number, the terminal obtains the correction factor β according to the subcarrier number and/or the resource unit number, and corrects the obtained maximum repetition number, where the correction method and the correction factor obtaining method are the same as the previous examples, as shown in table 6 (a) and table 6 (b). And the terminal acquires a repetition number set according to the corrected maximum repetition number of the PUSCH, and acquires an element for the current PUSCH transmission repetition number in the repetition number set according to the repetition number index.

Table 6 (a)

Table 6 (b)

Number of subcarriers	3	6
			β	1/4	1/2

The method for obtaining the repetition number by the terminal may preferably also be that the terminal obtains the repetition number according to the repetition number index, the number of subcarriers and/or the number of resource units. Specifically, the terminal may acquire the repetition number set according to the number of subcarriers and/or the number of resource units, set to { n ₀,n₁,…,n_K }, set the terminal acquisition repetition number index to i e [0, k ], and then acquire the configured repetition number to be n _i. The method for determining the repetition number set by the terminal may preferably be that the terminal obtains the repetition number set according to the corresponding relationship between the combination of the number of subcarriers and the number of resource units and the repetition number set, for example, when the number of subcarriers is 3 and the number of resource units is 2, the repetition number set is {1,4,8,16,32,64,128,256}; and the repetition number set is {1,2,4,8,32,64,96,128} when the number of subcarriers is 3 and the number of resource units is 4. Or, the method for determining the repetition number set by the terminal may preferably further include that the terminal obtains the repetition number set according to a correspondence between the number of subcarriers and the repetition number set, for example, when the number of subcarriers is 3, the repetition number set is {1,2,4,8,32,64,96,128}; and the repetition number set is {1,4,8,16,32,64,128,256} when the number of subcarriers is 6.

The two indication modes can be combined with each other, for example, the terminal determines a mode of acquiring the repetition number according to the value of the subcarrier number and/or the resource unit number, and as shown in table 7, when the subcarrier number is 3 and the resource unit number is 1, or the subcarrier number is 6 and the resource unit number is {1,2}, the terminal acquires the repetition number according to the repetition number index, the PUSCH maximum repetition number, the subcarrier number and the resource unit number; in other cases, the repetition number is obtained according to the repetition number index, the number of subcarriers, and the number of resource units, and the specific methods are as described above.

TABLE 7

Another configuration to accomplish the same purpose is: the terminal obtains a subframe number indication of PUSCH transmission, and the configured transmission subframe number may be an integer multiple or a non-integer multiple of a subframe number used for PUSCH transmission once.

The method for obtaining the subframe number indication of PUSCH transmission by the terminal may be that the terminal obtains the configured PUSCH transmission subframe number according to the index configuration of the transmission subframe number and the configuration of the maximum PUSCH transmission subframe number, where the configured transmission subframe number may be an integer multiple or a non-integer multiple of the subframe number used for PUSCH transmission once. The transmission subframe number index and the repetition number index can share the same indication domain of the downlink control information, namely when the coverage mode of the terminal is the coverage mode C and/or the number of subcarriers allocated by the PUSCH resource acquired by the terminal is smaller than the number of subcarriers of one physical resource block, the indication acquired by the terminal through the indication domain is the transmission subframe number index; otherwise, the terminal acquires the index of the indication repetition times through the indication field. Similarly, the maximum transmission subframe number indication may share the same RRC indication field as the maximum repetition number indication, or the maximum transmission subframe number indication is an independent RRC information unit for subcarrier-level transmission. When the maximum transmission subframe number indication can share the RRC indication domain with the maximum repetition number indication, if the coverage mode of the terminal is the coverage mode C and/or the number of subcarriers allocated by the PUSCH resource acquired by the terminal is smaller than the number of subcarriers of one physical resource block, the indication acquired by the terminal through the RRC indication domain is the maximum transmission subframe number indication; otherwise, the terminal obtains the indication of the maximum repetition number through the indication field.

The number of PUSCH transmission subframes acquired by the terminal may be an integer multiple or a non-integer multiple of the number of subframes used for PUSCH transmission once, and the process of physical resource mapping by the terminal according to the configuration of the number of transmission subframes is described below. The PUSCH may be mapped on one or more resource units, denoted as N _RU, each resource unit being at least repeatedly transmitted

Wherein,For the number of subframes of PUSCH transmissions acquired by the terminal,For the number of slots contained in a resource unit,Representing a rounding down. PUSCH repeat TransmissionThe secondary physical resource mapping may be the same as the NB-IoT terminal or the bandwidth limited/coverage enhanced terminal (BL/CE UE) in the existing protocol. Immediately after, in repeat transmissionAfter that, the front/>, of the PUSCH is againThe sub-frames are repeatedly sent once, wherein/>

As in PUSCH resource mapping method two in fig. 5; or in repeated transmissionsAfter that, the PUSCH is sent before/after a single timeThe transmission of each subframe is repeated once, as in PUSCH resource mapping method one in fig. 5. When PUSCHThe repeated transmission adopts cyclic repetition, that is, each subframe of the PUSCH single transmission is continuously repeated for several times and then repeated for the next time (NB-IoT NPUSCH physical resource mapping method), the two PUSCH resource mapping methods have different effects, and fig. 5 shows a schematic diagram of the two resource mapping methods.

For the embodiment of the present invention, if the bit width of the downlink control information format 6-1C (for downlink grant) is enlarged, the redundant bits may be used to indicate other HARQ-ACK resource configurations except for the HARQ-ACK resource offset (HARQ-ACK resource offset), which may include one or more items of configuration information in table 8:

TABLE 8

The specific indication content of the 3 items of configuration information may multiplex the existing eMTC signaling content or the configuration content in NB-IoT downlink control information format N1.

Examples of several sets of complete downlink control information format 6-0C configuration messages are given below.

An example is given in table 9, where the control information format of format 6-0C has a fixed total number of bits, which is the same as the maximum number of bits of the uplink grant information of coverage mode B (when the system bandwidth is 20 MHz), for supporting subcarrier-level scheduling of coverage mode B users. The downlink control information indicates the PRB index and the subcarrier index in a joint indication mode, and the indication of the narrowband index needs to be informed in a quasi-static mode through RRC signaling. In this example, the uplink scheduling of the coverage mode C terminal may cover subcarrier level scheduling, and cover the single PRB and 2PRB scheduling case of mode B at the same time. At this time, the coverage mode C may be used as the coverage mode B extended under the new protocol version, and when both the base station and the terminal support the coverage mode C, the terminal does not need to be reconfigured into the coverage mode B. Meanwhile, since the uplink grant information of the coverage pattern C, that is, the downlink control information format 6-0C, no longer indicates the narrowband index, the total bit number is no longer changed according to the LTE system bandwidth. Although the downlink grant information of the coverage pattern C, i.e., the signaling content of the downlink control information format 6-1C, may multiplex the coverage pattern B, the total number of bits thereof needs to be complemented according to the LTE system bandwidth, as shown in table 10.

TABLE 9

Table 10

In the resource allocation configuration in table 9, the subcarrier index may be indicated by a smaller number of bits, for example, in table 3 (e), where both PRB index indication and narrowband indication may be configured quasi-statically through RRC signaling. At this time, if the downlink control information format 6-1C can still use the configuration parameters identical to those of the format 6-1B, the total number of bits of the downlink control information format 6-0C is identical to the minimum number of bits of the format 6-1C (when the system bandwidth is 3 MHz), and when the system bandwidth is greater than 3MHz, the downlink control information format 6-0C needs to be bit-complemented, so that the total number of bits of the uplink and downlink grant information is identical.

For the embodiment of the present invention, another example of a downlink control information format 6-0C configuration message is given below for supporting subcarrier-level scheduling of overlay mode B users. Table 9 may be multiplexed with the rest of the downlink control information except for the resource allocation. For the embodiment of the present invention, the resource allocation configuration information of the present example is given in table 11 below. An additional 3 or 4 bits are introduced for coverage pattern C in this example for indicating the subcarrier index and/or the number of resource elements in the uplink grant information (downlink control information format 6-0C), for indicating HARQ-ACK resources in the downlink grant information (downlink control information format 6-1C), for indicating the configuration content in downlink control information format N1 in the content-reusable NB-IoT, and/or for indicating the number of repetitions of HARQ-ACK transmissions.

Watch 11 (a)

Watch 11 (b)

For the embodiment of the present invention, another example of a downlink control information format 6-0C configuration message is given below for supporting subcarrier-level scheduling of overlay mode a users. And introducing an indication identifier of the coverage mode C, which is used for indicating that the current coverage mode is the coverage mode A or the coverage mode C, and analyzing other indication fields of the downlink control information format 6-0C. The number of bits and the details of each indication field are shown in table 12 below.

Table 12

In order to achieve the purpose of the present application, uplink subcarrier level scheduling of a coverage mode C user is supported, and a flow design scheme for supporting the coverage mode C user to perform downlink reception and uplink transmission according to the coverage mode C is described below. When there are multiple overlay modes supporting subcarrier level scheduling in the system at the same time, for example, overlay mode C (which may be an extended overlay mode B for supporting subcarrier level scheduling) and overlay mode D (which may be an extended overlay mode a for supporting subcarrier level scheduling), the substitution of overlay mode D in the following description may form a corresponding flow. And the users working in the different coverage modes read different downlink control channel formats.

Step one: and the terminal reads the configuration information of the coverage mode C.

For the embodiment of the invention, the configuration message at least comprises one of 1) a system support coverage mode C indication message, which may be carried in a system message, such as a master message block (Master Information Block, MIB), or a system message block (System Information Block, SIB), and which may be a 1-bit enable message, or implicitly indicate that the cell supports coverage mode C by indicating a protocol version; 2) The coverage pattern C corresponds to a PRACH coverage class (NPRACH Coverage ENHANCEMENT LEVEL) configuration including, but not limited to, PRACH transmission repetition number, preamble index, PRACH hopping offset, MPDCCH search space offset, PRACH coverage class corresponds to an RSRP threshold, etc.

Wherein, the corresponding relation between the PRACH coverage level and the coverage mode C is one-to-one, namely, when one PRACH coverage level corresponds to the coverage mode C, other coverage modes are not corresponding any more; or, the correspondence between the PRACH coverage level and the coverage pattern C may be a one-to-many correspondence, that is, when a certain PRACH coverage level corresponds to the coverage pattern C, it may still correspond to another coverage pattern, for example, the coverage pattern a or the coverage pattern B.

Step two: after the terminal obtains the configuration information of the coverage mode C, reporting a request for configuring the coverage mode C or reporting the capability for supporting the coverage mode C.

For the embodiment of the present invention, the reporting process may include at least one of 1) the terminal explicitly reporting through RRC signaling, for example, carrying 1 bit through a connection setup request message (MSG 3) for indicating that the terminal supports a coverage mode C or configures a coverage mode C request; or the terminal carries a message when reporting the capability, and is used for indicating the terminal to support the coverage mode C or configure the coverage mode C request; 2) The terminal reports a request for configuring the coverage mode C or a capability for reporting the coverage mode C to the base station in a certain implicit behavior mode according to a system rule, for example, the system rule may be that the base station configures a PRACH coverage level for the coverage mode C, and the terminal sends a PRACH according to a parameter configured by the PRACH coverage level, that is, indicates the capability of the terminal to report the request for configuring the coverage mode C or report the coverage mode C.

Step three: the terminal transmits or receives data according to the coverage mode C parameters configured by the system; or after receiving the coverage mode C configuration signaling, the terminal performs uplink transmission and downlink reception according to the coverage mode C parameters configured by the system. The uplink transmission according to the coverage mode C parameter at least includes PRACH transmission according to a PRACH coverage level corresponding to the coverage mode C, physical uplink control channel PUCCH transmission configured or scheduled according to the coverage mode C, and obtaining scheduling information by reading a corresponding downlink control information format or random access response message configured according to the coverage mode C, and physical uplink shared channel PUSCH transmission.

For the embodiment of the present invention, the coverage mode C configuration signaling may be user-specific signaling, or a contention resolution message (MSG 4); the coverage mode C parameter of the system configuration at least comprises a configuration parameter related to a bandwidth limited/coverage enhanced (Bandwidth limited/Coverage enhanced, BL/CE) terminal coverage mode B in Release 14 version protocol, and the related configuration parameter may comprise a narrowband indication, and/or a PRB indication, and/or a resource unit number indication, etc. The data transmission of the terminal according to the coverage mode C at least comprises one of the following, namely, sending a PUSCH (physical uplink shared channel); transmitting HARQ-ACK; and receiving the MPDCH.

The sending content of the PUSCH comprises service data and/or random access response; the MPDCCH receiving at least comprises receiving downlink control information of a corresponding format, namely downlink control information format 6-0C/6-1C.

Several examples of supporting the downlink reception and uplink transmission by the coverage mode C user are given below.

An example of the terminal behavior flow is given in fig. 4. The overlay mode B in this embodiment may be replaced with the overlay mode a to form a new instance.

In this example, the terminal reports the overlay mode C request (or capability) in a combination of implicit and explicit indications. Firstly, a terminal acquires whether a cell supports configuration coverage mode C or not through reading a system message; if the cell supports the configuration of the coverage mode C, the terminal selects the PRACH coverage grade corresponding to the coverage mode B/the coverage mode C according to the downlink measurement, sends the PRACH according to the configuration parameters of the coverage grade, and receives the random access response message according to the coverage mode B. Wherein, the PRACH coverage level corresponding to the coverage mode B/coverage mode C is fixed by the system, and one or more PRACH coverage levels of coverage mode B in the Release 14 version protocol may be defined to be used for supporting the coverage mode C at the same time, for example, in defining PRACH coverage level 2 and PRACH coverage level 3 corresponding to the coverage mode B, and the level 3 is used for supporting the coverage mode B and the coverage mode C at the same time; then, the terminal reports the base station in the connection establishment request message, if the terminal supports or uses the coverage mode C, when the terminal reports the coverage mode C message, the terminal can perform uplink transmission and downlink reception according to the coverage mode C (the terminal receives ACK feedback of the connection establishment request message) after the success; otherwise, the terminal performs uplink transmission and downlink reception according to the coverage mode B.

For the embodiment of the present invention, the uplink resource scheduling result of the coverage mode C in this example may cover all uplink resource scheduling results of the coverage mode B in the prior art, and the downlink control information design in table 9 may be used. At this time, when the terminal needs to select the coverage mode B or the coverage mode C according to the downlink measurement result, and when both the cell and the terminal support the coverage mode C, the terminal will be configured to be the coverage mode C; when one party does not support the coverage mode C configuration, the terminal configures the coverage mode B.

An example of another such terminal behaviour flow is given in fig. 6.

For the embodiment of the present invention, in this example, the terminal reports the capability (or request) of coverage mode C implicitly according to a certain rule, and the system needs to define a PRACH coverage level dedicated to supporting coverage mode C.

Firstly, a terminal reads a system message to obtain PRACH coverage grade configuration parameters corresponding to a coverage mode C; then, when the downlink measurement result of the terminal meets the RSRP threshold requirement of the PRACH coverage class corresponding to the coverage mode C, the terminal configures and transmits the PRACH according to the PRACH coverage class corresponding to the coverage mode C; the base station can confirm the coverage mode of the terminal according to the PRACH coverage grade selected by the terminal; at this time, the terminal may perform subsequent downlink receiving and uplink sending processes according to the coverage mode C, and if the system defines that the random access response message (including the format, the scheduled time-frequency resource, etc.) is received in the coverage mode C, the terminal may perform uplink and downlink physical processes according to the coverage mode C from the random access response message.

An example of a third such terminal behaviour procedure is given in fig. 7.

For the embodiment of the present invention, in this example, the terminal reports the request (or capability) of coverage mode C in explicit signaling.

Firstly, a terminal acquires whether a cell supports configuration coverage mode C or not through reading a system message; the terminal may then report a coverage mode C request (or capability) in a connection setup request message (MSG 3); or the connection state terminal reports the request (or the capability) of the coverage mode C through the terminal capability reporting process; at this time, the terminal may perform downlink reception and uplink transmission according to the coverage mode C, or the terminal may perform uplink and downlink physical processes according to the coverage mode C after receiving the user-specific signaling for indicating the coverage mode C by the base station.

In order to achieve the object of the present application, a method for designing a channel interleaver for uplink subcarrier level scheduling is described below. The channel interleaver is used for inputting the coded bit sequence into the channel interleaver, ensuring that the mapping of the coded bit sequence on a transmission waveform can be realized when the mapping is finally performed on resource particles after the processes of scrambling, modulating, layer mapping, deformation precoding (transform precoding), precoding and the like. For uplink subcarrier-level scheduling, the time-domain length of a single transport block uplink transmission spans multiple subframes. When the design of the existing channel interleaver is used for uplink subcarrier level scheduling transmission, the data bits transmitted in the same subframe are not continuous bits in the coding bit sequence, so that the base station is required to start decoding after receiving all subframes occupied by one transmission block, which is not beneficial to reducing the receiving delay and can influence the realization of the existing eMTC base station receiver.

A channel interleaver for uplink subcarrier level scheduling transmission includes interleaving matrix partitioning. Preferably, when the interleaved matrix is divided and the interleaved coded bit sequence is output, the interleaved coded bit sequence is sequentially output according to the index sequence of the divided interleaved matrix. In one embodiment, the number of the channel interleaving matrix columns is marked as C _mux and the value isWhereinIs the number of single carrier frequency division multiple access symbols used for transmitting PUSCH in one subframe, or the number of single carrier frequency division multiple access symbols used for PUSCH transmission in an uplink pilot time slot configured by high-layer signaling. According to the existing protocol (TS 36.212, release 14), a channel interleaving matrix is generated, the number of rows and columns of which are denoted as R _mux and C _mux, respectively, and the channel interleaving matrix is denoted as

Wherein the sequences y ₀,y₁, …,The bit sequence after channel coding at least comprises one of the following data transmission block bits, channel state information bits, rank information bits and hybrid automatic repeat request response message bits. Further, the channel interleaving matrix with the dimension (R _mux×C_mux) is divided into a plurality of channel interleaving matrices with the dimensionChannel interleaving matrix of/>, whereinAndThe number of transmission subcarriers indicated in the downlink control information may be the same as or different from the number of subcarriers allocated in the downlink control information, and examples of the method for allocating subcarriers in the downlink control information are shown in table 3/table 4. Every/>, in the channel interleaving matrix with dimension (R _mux×C_mux)The rows form a dimension ofI-th dimension isThe channel interleaving matrix of (a) is:

Wherein i=0, …, N _m -1 and The output of the channel interleaver is, by dimensionThe index sequence of the channel interleaving matrix sequentially outputs each dimension as/>, from small to largeAn interleaving sequence of the channel interleaving matrix; each dimension isThe channel interleaving matrix outputs an interleaving sequence in such a manner that elements in the interleaving matrix are sequentially read in columns. N _m dimensions areThe concatenation of the interleaving sequences output by the channel interleaving matrix of (a) constitutes the interleaving bit sequence output by the complete channel interleaver. According to the bit sequence output by the channel interleaver, after the mapping of the resource elements is completed, the data information carried in the same subframe can be ensured to be a continuous section in the channel coding bit sequence, so that the base station can start decoding after receiving a part of subframes of one transmission block.

An embodiment of the present invention provides a terminal, as shown in fig. 8, including: a judgment module 71, a first sending module 72, a first receiving module 73, a data transmission module 74, wherein,

The judging module 71 is configured to judge whether the base station supports the first scheduling mode according to the configuration information of the first scheduling mode sent by the base station.

A first sending module 72 is configured to send a request message and/or a capability message to the base station when the base station supports the first scheduling mode. The request message is used for requesting the base station to configure a first scheduling mode for the terminal, and the capability message is used for reporting the scheduling mode supported by the terminal.

The first receiving module 73 is configured to receive scheduling information for the first scheduling mode sent by the base station.

The data transmission module 74 is configured to transmit or receive data according to the scheduling information of the first scheduling mode received by the first receiving module 73.

Compared with the prior art, the terminal provided by the embodiment of the invention judges whether the base station supports the first scheduling mode according to the configuration information of the first scheduling mode sent by the base station, if the base station supports the first scheduling mode, the terminal sends a request message and/or a capability message to the base station to request the base station to configure the first scheduling mode for the terminal or is used for reporting the scheduling mode supported by the terminal, when the base station receives the request message and/or the capability message sent by the terminal and determines that the scheduling mode of the terminal is the first scheduling mode, the terminal sends the scheduling information of the first scheduling mode to the terminal, and the terminal sends or receives data according to the scheduling information of the first scheduling mode. In the embodiment of the invention, a new scheduling mode, namely a first scheduling mode, appears, and when the terminal and the base station support the first scheduling mode, the base station can send scheduling information of the first scheduling mode to the terminal, so that the terminal and the base station can send or receive data in the new scheduling mode.

An embodiment of the present invention provides a base station, as shown in fig. 9, including: a broadcast module 81, a second receiving module 82, a second transmitting module 83, wherein,

A broadcasting module 81, configured to broadcast a configuration message of the first scheduling mode when the base station supports the first scheduling mode.

And the second receiving module 82 is configured to receive a request message and/or a capability message sent by the terminal. The request message is used for requesting the base station to configure the first scheduling mode for the terminal, and the capability message is used for reporting the scheduling mode supported by the terminal.

And the second sending module 83 is configured to send the scheduling information of the first scheduling mode to the terminal when the terminal scheduling mode is the first scheduling mode, so that the terminal performs data sending or receiving according to the scheduling information of the first scheduling mode.

The terminal and the base station provided by the embodiments of the present invention can implement the method embodiments provided above, and specific functional implementation is referred to the description in the method embodiments, and will not be repeated here.

Those skilled in the art will appreciate that the present application includes apparatuses related to performing one or more of the operations described herein. These devices may be specially designed and constructed for the required purposes, or may comprise known devices in general purpose computers. These devices have computer programs stored therein that are selectively activated or reconfigured. Such a computer program may be stored in a device (e.g., a computer) readable medium or any type of medium suitable for storing electronic instructions and respectively coupled to a bus, including, but not limited to, any type of disk (including floppy disks, hard disks, optical disks, CD-ROMs, and magneto-optical disks), ROMs (Read-Only memories), RAMs (Random Access Memory, random access memories), EPROMs (Erasable Programmable Read-Only memories), EEPROMs (ELECTRICALLY ERASABLE PROGRAMMABLE READ-Only memories), flash memories, magnetic cards, or optical cards. That is, a readable medium includes any medium that stores or transmits information in a form readable by a device (e.g., a computer).

It will be understood by those within the art that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. Those skilled in the art will appreciate that the computer program instructions can be implemented in a processor of a general purpose computer, special purpose computer, or other programmable data processing method, such that the blocks of the block diagrams and/or flowchart illustration are implemented by the processor of the computer or other programmable data processing method.

Those of skill in the art will appreciate that the various operations, methods, steps in the flow, acts, schemes, and alternatives discussed in the present invention may be alternated, altered, combined, or eliminated. Further, other steps, means, or steps in a process having various operations, methods, or procedures discussed herein may be alternated, altered, rearranged, disassembled, combined, or eliminated. Further, steps, measures, schemes in the prior art with various operations, methods, flows disclosed in the present invention may also be alternated, altered, rearranged, decomposed, combined, or deleted.

The foregoing is only a partial embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims

1. A method performed by a terminal in a communication system, comprising:

Receiving information indicating a coverage enhancement CE mode and a physical resource block PRB index for a CE mode associated with a subcarrier-level resource allocation, and information on the number of repetitions from a base station;

Receiving downlink control information including resource allocation information from the base station, the resource allocation information indicating a set of subcarriers in the PRB;

Determining time domain resources for repeated transmission in a CE mode associated with the subcarrier-level resource allocation based on the information about the number of repetitions;

and transmitting data to a base station based on the subcarrier set in the PRB and the time domain resource.

2. The method as recited in claim 1, further comprising:

A capability message is sent to the base station, the capability message including information indicating whether the terminal supports CE mode associated with the subcarrier-level resource allocation.

3. The method of claim 1, wherein the resource allocation information indicates an index of a subcarrier in a set of subcarriers in the PRB.

4. The method of claim 1, wherein the resource allocation information comprises 4 bits.

5. The method of claim 1, wherein the downlink control information further comprises information about the number of resource units.

6. The method of claim 1, wherein receiving, from the base station, information indicating the coverage enhancement CE mode and a physical resource block, PRB, index for the CE mode associated with the subcarrier-level resource allocation, comprises:

A radio resource control, RRC, message is received from a base station, the RRC message including information indicating a CE mode and a PRB index for the CE mode associated with a subcarrier-level resource allocation.

7. A method performed by a base station in a communication system, comprising:

transmitting information indicating a coverage enhancement CE mode and a physical resource block PRB index for CE mode associated with subcarrier-level resource allocation, and information on the number of repetitions to a terminal;

transmitting downlink control information comprising resource allocation information to the terminal, wherein the resource allocation information indicates subcarrier sets in the PRB;

receiving data sent by the terminal based on a subcarrier set and time domain resources in the PRB;

Wherein the time domain resource is determined based on the information about the number of repetitions, the time domain resource being used for repeated transmissions in CE mode associated with the subcarrier-level resource allocation.

8. The method as recited in claim 7, further comprising:

And receiving a capability message sent by the terminal, wherein the capability message comprises information indicating whether the terminal supports a CE mode associated with the subcarrier-level resource allocation.

9. The method of claim 7, wherein the resource allocation information indicates an index of a subcarrier in a set of subcarriers in the PRB.

10. The method of claim 7, wherein the resource allocation information comprises 4 bits.

11. The method of claim 7, wherein the downlink control information further comprises information about the number of resource units.

12. The method of claim 7, wherein transmitting to the terminal information indicating the coverage enhancement CE mode and a physical resource block, PRB, index for the CE mode associated with the subcarrier-level resource allocation comprises:

a radio resource control, RRC, message is sent to the terminal, the RRC message including information indicating a coverage enhancement, CE, mode and a PRB index for the CE mode associated with the subcarrier-level resource allocation.

13. A terminal, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of any of claims 1-6 when executing the program.

14. A base station, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of any of claims 7-12 when executing the program.

15. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the method of any of claims 1-6 or any of claims 7-12.