CN107465495B

CN107465495B - Indication method and device of transmission state

Info

Publication number: CN107465495B
Application number: CN201610391127.XA
Authority: CN
Inventors: 云翔; 孙立新; 丁颖哲
Original assignee: Beijing Bai Caibang Technology Co ltd
Current assignee: Baicells Technologies Co Ltd
Priority date: 2016-06-03
Filing date: 2016-06-03
Publication date: 2020-08-28
Anticipated expiration: 2036-06-03
Also published as: CN107465495A

Abstract

The invention provides a method and a device for indicating a transmission state, wherein the method for indicating the transmission state comprises the following steps: determining bit information carried in a Common Physical Downlink Control Channel (CPDCCH), and indicating the state information of uplink transmission and/or downlink transmission according to the bit information. The scheme of the invention can realize more comprehensive indication of the state information of uplink transmission and downlink transmission by using less bit information carried in the CPDCCH.

Description

Indication method and device of transmission state

Technical Field

The present invention relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for indicating a transmission status.

Background

Currently, a mobile communication system generally refers to a system in which an operator provides a communication service for a user terminal (e.g., a mobile phone) by deploying a radio access network device (e.g., a base station) and a core network device (e.g., a Home Location Register, HLR), etc. Mobile communication systems have gone through the first, second, third and fourth generations. The first generation mobile communication system refers to the initial analog, only voice call cellular phone standard, mainly adopts analog technology and Frequency Division Multiple Access (FDMA) Access method; the second generation Mobile Communication System introduces digital technology, improves network capacity, improves voice quality and confidentiality, and takes Global System for Mobile Communication (GSM) and Code division multiple Access (CDMA IS-95) as representatives; the third generation mobile communication system mainly refers to CDMA2000, WCDMA and TD-SCDMA technologies, all of which use CDMA as access technology; the standards of the fourth generation mobile communication system are relatively unified internationally, and are Long Term Evolution (Long Term Evolution/Long Term Evolution-Advanced, LTE/LTE-a) formulated by the international organization for standardization 3GPP, and the downlink of the system is according to an Access mode of Orthogonal Frequency Division Multiple Access (OFDMA) and the uplink is according to Single Carrier-Frequency Division Multiple Access (SC-FDMA), and the high-speed transmission of the downlink peak rate of 1Gbps and the uplink peak rate of 500Mbps is achieved according to a flexible bandwidth and a self-adaptive modulation and coding mode.

The MulteFire is an LTE technology that newly defines an uplink transmission method on the basis of an LTE R13LAA downlink transmission method and can independently work in an unlicensed frequency band, i.e., stand-alone LTE-U. For the technology working in the unlicensed frequency band, Listen Before Talk (LBT) is introduced to ensure coexistence among multiple systems, and at the same time, the time length of each transmission opportunity TxOP is also limited, and the maximum time length is 10 subframes, that is, 10 ms.

In the licensed spectrum assisted access LAA, only Downlink transmission is performed in TxOP, and a Downlink transmission state is indicated by a Channel Control Information (DCI) format 1C in a Common Physical Downlink Control Channel (CPDCCH) scrambled by Radio Network Temporary Identity CC-RNTI (Radio Network Temporary Identity, RNTI), which is mainly the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols occupied by a Downlink subframe. Specifically, the DCI includes 4bits of information, the nth subframe indicates the number of OFDM symbols of the nth subframe or the (n + 1) th subframe, and when the indicated number of OFDM symbols is less than 14 symbols or indicates the number of symbols of the current subframe, the end position of the downlink subframe may be obtained.

Because uplink transmission is introduced into the MulteFire and a more flexible transmission mode is supported, the following differences exist: (1) the ratio of uplink and downlink subframes in each TxOP may be different, so the number of uplink subframes may be different; (2) an enhanced physical uplink control channel ePUCCH and a short physical uplink control channel sPUCCH are introduced into an uplink physical channel to transmit uplink control information UCI (including acknowledgement ACK/non-acknowledgement NACK, channel state information CSI, scheduling request SR and the like) and uplink physical channel information such as a channel sounding reference signal SRS, a physical random access channel PRACH and the like which are transmitted through a physical uplink control channel PUCCH in the traditional LTE, and the content transmitted in an uplink subframe specifically needs to be notified; (3) in order to support channel access among a plurality of users in uplink transmission, the interference can be reduced through a first OFDM symbol in a punctured subframe, so that LBT of other users can be successful and the channel access can be realized, and the channel access can also be realized through transmitting SRS or reducing the interference through a last OFDM symbol in the punctured subframe; (4) under the condition of cross-TxOP scheduling, scheduling information indicated by an uplink scheduling Grant (UL Grant) may need to be triggered through a physical downlink control channel (CPDCCH) for scheduling, and the CPDCCH needs to indicate time information corresponding to the triggered UL Grant.

Therefore, according to the current indication mode of the CPDCCH, the status information of uplink transmission and downlink transmission cannot be comprehensively indicated.

Disclosure of Invention

The invention aims to provide a method and a device for indicating a transmission state, which aim to solve the problem that the existing CPDCCH indicating mode can not indicate the state information of uplink transmission and downlink transmission more comprehensively.

In order to achieve the above object, an embodiment of the present invention provides a method for indicating a transmission status, including:

determining bit information carried in a Common Physical Downlink Control Channel (CPDCCH);

and indicating the state information of uplink transmission and/or downlink transmission according to the bit information.

On the other hand, an embodiment of the present invention further provides an apparatus for indicating a transmission state, including:

the determining module is used for determining bit information carried in a Common Physical Downlink Control Channel (CPDCCH);

and the indicating module is used for indicating the state information of uplink transmission and/or downlink transmission according to the bit information.

Through the technical scheme, the invention has the beneficial effects that:

in the above technical solution, by determining the bit information carried in the CPDCCH and indicating the state information of the uplink transmission and/or the downlink transmission according to the bit information, it is possible to realize a more comprehensive indication of the state information of the uplink transmission and the downlink transmission by using less bit information carried in the CPDCCH.

Drawings

Fig. 1 is a flowchart illustrating a method for indicating a transmission status according to a first embodiment of the present invention;

fig. 2 is a flowchart illustrating a method for indicating a transmission status according to a second embodiment of the present invention;

fig. 3 is a flowchart illustrating a method for indicating a transmission status according to a third embodiment of the present invention;

fig. 4 is a flowchart illustrating a method for indicating a transmission status according to a fourth embodiment of the present invention;

fig. 5 is a schematic structural diagram of an indicating apparatus for indicating a transmission state according to a fifth embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

First embodiment

As shown in fig. 1, a first embodiment of the present invention provides a method for indicating a transmission status, which includes steps 101 to 102, which are described in detail below.

Step 101: and determining bit information carried in a Common Physical Downlink Control Channel (CPDCCH).

In the embodiment of the invention, the maximum bit number which can be carried by the CPDCCH is 15bits, and the bit information carried by the CPDCCH can comprise at least one of symbol configuration information of a subframe, the number of uplink subframes, configurable information, configurable uplink subframe state information and triggering relative time information by redesigning the CPDCCH.

And the bit number respectively occupied by the bit information can be adjusted according to the actual situation. For example, the symbol configuration information of the subframe may occupy 4bits, the number of uplink subframes and the configurable information may occupy 4bits, the configurable uplink subframe status information may occupy 4 or 6bits, and the trigger relative time information may occupy 2 or 1 bit.

It should be noted that, when the CPDCCH is designed, the bit information may be carried on one CPDCCH or may be carried on a plurality of CPDCCHs. Moreover, the plurality of CPDCCHs may be simultaneously transmitted in the same subframe and scrambled by different RNTIs, or may be transmitted in different subframes and scrambled by the same RNTIs. For example, if the nth subframe is an uplink and downlink handover subframe, the symbol configuration information and the trigger relative time information of the subframe may be notified in the CPDCCH of the nth-1 subframe, and the number of uplink subframes and the configurable information and the configurable uplink subframe status information may be notified in the CPDCCH of the nth subframe.

Step 102: and indicating the state information of uplink transmission and/or downlink transmission according to the bit information.

Specifically, the symbol configuration information of the subframe is used to indicate the OFDM symbol configuration condition of the current subframe or the next subframe, that is, the number of downlink OFDM symbols, the number of null OFDM symbols, and the number of uplink OFDM symbols, the number of uplink subframes and the configurable information are used to indicate the number of uplink subframes and a configurable set of subframes of a corresponding TxOP, the configurable uplink subframe status information is used to indicate the transmission status of different configurable uplink subframes, and the trigger relative time information is used to indicate the effective time range of the triggered UL Grant.

According to the method for indicating the transmission state, the bit information carried in the CPDCCH is determined, and the state information of uplink transmission and/or downlink transmission is indicated according to the bit information, so that the state information of uplink transmission and downlink transmission can be indicated comprehensively by using less bit information carried in the CPDCCH.

Second embodiment

As shown in fig. 2, a second embodiment of the present invention provides a method for indicating a transmission status, which includes steps 201 to 202, which are described in detail below.

Step 201: and determining the symbol configuration information of the sub-frame carried in the CPDCCH.

In LAA, 4bits information in the CPDCCH is occupied to indicate the number of downlink OFDM symbols of the current subframe or the next subframe. Because the indication of the uplink transmission state information is considered, the embodiment of the invention redefines the 4bits information to indicate the OFDM symbol configuration condition of the current subframe or the next subframe.

For example, see table 1 below, which is one of the correspondence relationships between the redefined indication information bits (bits) of the current subframe and the OFDM symbol configuration case.

TABLE 1

In table 1, 0000-.

Thus, according to the correspondence of table 1, the specific form of the bit in the CPDCCH can be determined.

Step 202: and indicating the OFDM symbol configuration condition of the current subframe or the next subframe according to the symbol configuration information of the subframe, wherein the OFDM symbol configuration condition comprises the number of downlink OFDM symbols, the number of null OFDM symbols and the number of uplink OFDM symbols.

The number of the uplink OFDM symbols is the number of the OFDM symbols occupied by transmitting short physical uplink control channel (sPUCCH) resources or Sounding Reference Signals (SRS).

Specifically, in the OFDM symbol configuration in table 1, the uplink OFDM symbols involved are used for transmitting sPUCCH resources, and there are generally 4 OFDM symbols. For example, if the symbol configuration information of the subframe carried in the CPDCCH is 0100, according to the correspondence shown in table 1, the OFDM symbol configuration situation corresponding to 0100 is (—, [9,1,4]), which indicates the OFDM symbol configuration situation of the next subframe, and specifically: the number of downlink OFDM symbols is 9, the number of null OFDM symbols is 1, and the number of uplink OFDM symbols is 4 (that is, the number of OFDM symbols for transmitting sPUCCH resources is 4).

In the embodiment of the invention, the number of downlink OFDM symbols can be configured by means of high-level signaling, and the indication is carried out through two reserved indication information bits, namely 1110 and 1111.

See, for example, table 2 below:

TABLE 2

Specifically, 1110 corresponds to (—, [ x,14-x,0]) indicating the OFDM symbol allocation of the next subframe: the number of downlink OFDM symbols is x, the number of null OFDM symbols is (14-x), and no uplink OFDM symbol is present; 1111 corresponds to ([ x,14-x,0], -) which represents the OFDM symbol configuration of the current sub-frame: the number of downlink OFDM symbols is x, the number of null OFDM symbols is (14-x), and no uplink OFDM symbol is present.

Wherein, x is obtained by high-level signaling configuration, the number of corresponding uplink OFDM symbols is 0, that is, the indicated subframe is not used for transmitting the sPUCCH resource. In practical configuration, the value of x is usually a certain number of downlink OFDM symbols in 3, 6, 9, and 10.

Referring to table 3 and table 4 again, table 3 shows a second corresponding relationship between the redefined indication information bits of the current subframe and the OFDM symbol allocation, and table 4 shows a third corresponding relationship between the redefined indication information bits of the current subframe and the OFDM symbol allocation.

TABLE 3

In the OFDM symbol configuration in table 3, the number of uplink OFDM symbols used for transmitting SRS is generally 1. In addition, x in the indication information bits 1110 and 1111 is also configured by high layer signaling, and the number of corresponding uplink OFDM symbols is 0, that is, the indicated subframe is not used for transmitting SRS. In practical configuration, the value of x is usually a certain number of downlink OFDM symbols in 3, 6, 9, 10, 11, and 12.

For example, if the symbol configuration information of the subframe carried in the CPDCCH is 0100, according to the correspondence relationship shown in table 3, the OFDM symbol configuration situation corresponding to 0100 is (—, [9,4,1]), which indicates the OFDM symbol configuration situation of the next subframe, and specifically: the number of downlink OFDM symbols is 9, the number of null OFDM symbols is 4, and the number of uplink OFDM symbols is 1 (i.e., the number of OFDM symbols for transmitting SRS is 1).

TABLE 4

In the OFDM symbol configuration in table 4, the related uplink OFDM symbols are used to transmit sPUCCH resources or SRS, that is, if the number of uplink OFDM symbols is 4, sPUCCH resources are transmitted, and if the number of uplink OFDM symbols is 1, SRS is transmitted. In addition, x in the indication information bits 1110 and 1111 is also configured by high layer signaling, and the corresponding uplink OFDM symbol number is 0, that is, the indicated subframe is not used for uplink transmission. In practical configuration, the value of x is usually a certain number of downlink OFDM symbols in 3, 6, 9, 10, 11, and 12.

In practical applications, some configurations, for example, [10,0,4], [9,1,4], etc., need to be interpreted according to the terminal capabilities. For example, the terminal reports the number of OFDM symbols required for uplink and downlink switching to the base station, when the number of OFDM symbols required for uplink and downlink switching is less than or equal to the number of null OFDM symbols, the base station considers that uplink resources are transmitted, and when the number of OFDM symbols required for uplink and downlink switching is greater than the number of null OFDM symbols, the base station considers that uplink resources are not transmitted.

When the first downlink subframe in TxOP is a half frame and the terminal obtains a start symbol to be sent by blind solution as 7, if the terminal receives the CPDCCH at the same time, only the value of 0000-0111 is configurable, and the terminal considers that the transmission state corresponding to 0111 is: the start position is the symbol 7 and the end position is the symbol 13.

The method for indicating the transmission state in the embodiment of the invention can indicate the state of downlink transmission and can also indicate whether to send the sPUCCH resource or the SRS resource by determining the symbol configuration information of the subframe carried in the CPDCCH and indicating the OFDM symbol configuration condition of the current subframe or the next subframe according to the symbol configuration information of the subframe.

Third embodiment

As shown in fig. 3, a third embodiment of the present invention provides a method for indicating a transmission status, which includes steps 301 to 303, which are described in detail below.

Step 301: and determining the number of the uplink subframes and the configurable information carried in the CPDCCH according to at least one configurable uplink subframe set which is configured by the high-level signaling and corresponds to different uplink subframe numbers.

Specifically, when the number of uplink subframes is large, the DCI capacity in the CPDCCH is limited, and various transmission states of all uplink subframes cannot be indicated, so that the corresponding configurable uplink subframe set can be determined by at least one configurable uplink subframe set, which is configured by high-level signaling such as radio resource control RRC and corresponds to different uplink subframe numbers, and the number of uplink subframes and the configurable information carried in the CPDCCH can be determined.

The number of configurable uplink subframe sets configured by the higher layer signaling and corresponding to different uplink subframe numbers may be 1. For example, when the number of uplink subframes is 9, the configurable uplink subframe set configured by the higher layer signaling may be { subframe 1,4,7 }; or when the number of uplink subframes is 8, the configurable uplink subframe set of the higher layer signaling configuration may be { subframe 4, 5, 7 }.

Further, the configurable uplink subframe set corresponding to different uplink subframe numbers configured by the higher layer signaling may also be multiple, for example, two. For example, when the number of uplink subframes is 9, the configurable uplink subframe set configured by the higher layer signaling may include a configurable uplink subframe set 1 and a configurable uplink subframe set 2, where the configurable uplink subframe set 1 is { subframe 1,4,7}, and the configurable uplink subframe set 2 is { subframe 2, 5, 8 }.

In the embodiment of the present invention, the number of uplink subframes and the configurable information are used to indicate the number of uplink subframes and a configurable uplink subframe set. Also, referring to table 5 below, for example, two configurable uplink subframe sets are used, the number of uplink subframes and the configurable information may be embodied by 4bits information.

TABLE 5

In table 5, the indicator information bits 1001 jointly indicate that the number of uplink subframes is 9 and the configurable uplink subframe set is 1, and the indicator information bits 1111 jointly indicate that the number of uplink subframes is 9 and the configurable uplink subframe set is 2.

Step 302: and determining the configurable uplink subframe state information carried in the CPDCCH according to a transmission state set configured by a high-level signaling.

In the embodiment of the present invention, the transmission states of the configurable uplink subframe may include, for example, 8 states, as shown in table 6 below:

TABLE 6

The transmission state of the configurable uplink subframe shown in table 6 is mainly as follows: whether the transmission contains ePUCCH, whether the first OFDM symbol is punctured, and whether the last OFDM symbol is punctured.

In the embodiment of the present invention, the transmission state set configured by the high layer signaling is specifically a configurable state of each configurable uplink subframe. For example, the configurable state of the first configurable uplink subframe is { state 1, state 2, state 3, state 4}, the configurable state of the second configurable uplink subframe is { state 1, state 3, state 5, state 7}, and the configurable state of the third configurable uplink subframe is { state 2, state 4, state 6, state 8 }. When the number of uplink subframes in the CPDCCH and the number of uplink subframes indicated by the configurable uplink subframe set field are 9, and the configurable uplink subframe set is { subframe 1,4,7}, the corresponding transmission state set of the higher layer signaling configuration may be: the configurable state of the first configurable uplink subframe 1 is { state 1, state 2, state 3, state 4}, the configurable state of the second configurable uplink subframe 4 is { state 1, state 3, state 5, state 7}, and the configurable state of the third configurable uplink subframe 7 is { state 2, state 4, state 6, state 8 }. That is, the higher layer signaling needs to configure the transmission state set of the configurable uplink subframe corresponding to the configurable uplink subframe set.

If the higher layer signaling configures multiple configurable uplink subframe sets, the higher layer signaling needs to configure the configurable state of the configurable uplink subframe corresponding to each configurable uplink subframe set to determine the transmission state of the configurable uplink subframe.

It should be noted that, when determining the transmission state of the configurable uplink subframe, if the nth subframe after receiving the CPDCCH is configured by the higher layer for epdcch transmission, the configurable state of other configurable uplink subframes except the nth subframe may be determined without using a transmission state set configured by the higher layer signaling, but the configurable states of the other configurable uplink subframes may be directly selected as { state 1, state 2, state 3, and state 4}, so that the requirement for determining the transmission state of the configurable uplink subframe may also be met.

Step 303: and indicating the number of uplink subframes of the current TxOP, a configurable uplink subframe set corresponding to the number of uplink subframes and the transmission state of the configurable uplink subframes corresponding to the configurable uplink subframe set according to the number of uplink subframes, the configurable information and the configurable uplink subframe state information.

Wherein the configurable uplink subframe status information is used for directly indicating the transmission status of the configurable uplink subframe. Thus, after determining the number of uplink subframes, the configurable information, and the configurable uplink subframe status information, the information may be used to indicate the number of uplink subframes of the current TxOP, the configurable uplink subframe set corresponding to the number of uplink subframes, and the transmission status of the configurable uplink subframes corresponding to the configurable uplink subframe set.

According to the method for indicating the transmission state, the number of uplink subframes, the configurable information and the configurable uplink subframe state information which are carried in the CPDCCH can be used for indicating the number of the uplink subframes of the current TxOP, the configurable uplink subframe set corresponding to the number of the uplink subframes and the transmission state of the configurable uplink subframes corresponding to the configurable uplink subframe set, so that the indication of the uplink transmission state information is realized.

Fourth embodiment

As shown in fig. 4, a fourth embodiment of the present invention provides a method for indicating a transmission status, which includes steps 401 to 402, which are described in detail below.

Step 401: determining trigger relative time information carried in the CPDCCH.

Specifically, under the condition of cross-TxOP scheduling, scheduling information indicated by an uplink scheduling Grant UL Grant may be scheduled only by being triggered by a CPDCCH, and the CPDCCH needs to indicate time information corresponding to the triggered UL Grant. Therefore, in the embodiment of the present invention, 2bits information may be introduced into the DCI of the CPDCCH to indicate trigger relative time information, where the trigger relative time information is used to indicate time difference information between the CPDCCH and the UL Grant.

For example, the specific form of the trigger relative time information can be seen in table 7 below:

bit position	00	01	10	11
					Time difference information	2-10 subframes	11-20 subframes	21-30 subframes	31-40 subframes

TABLE 7

In table 7, 00 indicates that the cpch is used to trigger the UL Grant of 2-10 subframes before the current time (i.e., the time when the cpch is transmitted), and the subframes may be consecutive subframes or non-consecutive downlink subframes; 01 denotes that the CPDCCH is used to trigger the UL Grant of 11-20 subframes before the current time; and so on.

In the embodiment of the present invention, when determining the trigger relative time information, the trigger relative time information may be determined according to an interval granularity configured by a higher layer signaling, a maximum time range, or a plurality of time difference information.

The manner in which the trigger relative time information is determined based on higher layer signaling is described below by tables 8-10.

(1) Referring to table 8, the trigger relative time information carried in the CPDCCH is determined according to the interval granularity X configured by the higher layer signaling.

Bit position	00	01	10	11
					Time difference information	0-X subframe	X +1-2X subframes	2X +1-3X subframes	3X +1-4X subframes

TABLE 8

Wherein, the X value is configured by the higher layer signaling, when the load in the system is higher, a larger X value can be configured, when the load in the system is lower, a smaller X value can be configured, so as to indicate the suitable time difference information under different conditions.

(2) Referring to table 9, the trigger relative time information carried in the CPDCCH is determined according to the maximum time range Y configured by the higher layer signaling.

TABLE 9

The Y value is obtained by high-level signaling configuration, when the load in the system is higher, a larger Y value can be configured, and when the load in the system is lower, a smaller Y value can be configured, so that under different conditions, the appropriate time difference information can be indicated.

(3) Referring to table 10, the trigger relative time information carried in the CPDCCH is determined according to a plurality of time difference information Z1, Z2, Z3 and Z4 configured by higher layer signaling.

Bit position	00	01	10	11
					Time difference information	0-Z1 subframe	Z1+1-Z2 subframes	Z2+1-Z3 subframes	Z3+1-Z4 subframes

Watch 10

Step 402: and indicating the time difference information of the CPDCCH and the uplink scheduling Grant (UL Grant) according to the trigger relative time information.

In the embodiment of the present invention, the time difference information between the CPDCCH and the UL Grant may be uniformly distributed, non-uniformly distributed, or recycled, and the like, which is not limited in the present invention.

For example, referring to table 7, the time difference information is uniformly distributed. Referring again to tables 11 and 12 below, the time difference information is non-uniformly distributed and recycled, respectively.

Bit position	00	01	10	11
					Time difference information	2-5 subframes	6-10 subframes	11-20 subframes	21-40 subframes

TABLE 11

Here, the time difference information shown in table 11 is non-uniformly distributed.

Bit position	00	01	10	11
					Time difference information	2-10 subframes	6-10 subframes	11-40 subframes	21-40 subframes

TABLE 12

The time difference information shown in table 12 is used repeatedly.

It should be noted that, after the CPDCCH triggers the UL Grant, if the indication information in the CPDCCH is not matched with the indication information in the UL Grant, the indication should be performed based on the indication information in the CPDCCH, so as to prevent collision from occurring and causing system performance degradation.

For example, if the UL Grant indicates to transmit the SRS, but the last OFDM symbol in the CPDCCH indicates not to be punctured, that is, the SRS cannot be transmitted (the last OFDM symbol in a subframe is usually punctured to transmit the SRS), in this case, if the terminal still transmits the SRS according to the UL Grant, the terminal may collide with uplink data transmitted by other terminals, resulting in reduced system performance. That is, in this case, the indication is performed based on the indication information in the CPDCCH.

The method for indicating the transmission state of the embodiment of the invention can indicate the effective time range of the triggered UL Grant through the trigger relative time information carried in the CPDCCH.

Fifth embodiment

As shown in fig. 5, a fifth embodiment of the present invention provides an indicating apparatus for a transmission state, including:

a determining module 51, configured to determine bit information carried in a common physical downlink control channel CPDCCH;

and an indicating module 52, configured to indicate the status information of uplink transmission and/or downlink transmission according to the bit information.

Wherein the bit information includes at least one of symbol configuration information of a subframe, a number of uplink subframes and configurable information, configurable uplink subframe status information, and trigger relative time information.

Further, when the bit information includes symbol configuration information of a subframe, the indicating module 52 includes:

a first indicating unit, configured to indicate an OFDM symbol configuration condition of a current subframe or a next subframe according to symbol configuration information of the subframe, where the OFDM symbol configuration condition includes a downlink OFDM symbol number, a null OFDM symbol number, and an uplink OFDM symbol number;

Specifically, the number of downlink OFDM symbols may be obtained by high-level signaling configuration, and the number of corresponding uplink OFDM symbols is 0.

Further, when the bit information includes the number of uplink subframes and the configurable information, the determining module includes:

a first determining unit, configured to determine, according to at least one configurable uplink subframe set corresponding to different uplink subframe numbers configured by a high-level signaling, the number of uplink subframes and configurable information carried in the CPDCCH.

Further, when the bit information includes configurable uplink subframe status information, the determining module includes:

a second determining unit, configured to determine, according to a transmission state set configured by a high-level signaling, configurable uplink subframe state information carried in the CPDCCH.

Wherein the configurable uplink subframe status information is used for directly indicating the transmission status of the configurable uplink subframe.

Further, when the bit information includes trigger relative time information, the determining module includes:

a third determining unit, configured to determine, according to interval granularity configured by a high-level signaling, a maximum time range, or multiple pieces of time difference information, trigger relative time information carried in the CPDCCH.

Further, when the bit information includes trigger relative time information, the indicating module includes:

and a second indicating unit, configured to indicate time difference information between the CPDCCH and an uplink scheduling Grant UL Grant according to the trigger relative time information.

Wherein the time difference information is uniformly distributed, non-uniformly distributed or recycled.

Further, when the indication information in the CPDCCH and the indication information in the UL Grant are not matched, indicating is performed based on the indication information in the CPDCCH.

The embodiment of the device of the invention is a device corresponding to the embodiment of the method, and all implementation means in the embodiment of the method are applicable to the embodiment of the device, and the same technical effects can be achieved.

While the principles of the invention have been described in connection with specific embodiments thereof, it should be noted that it will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which will be within the skill of those in the art after reading the description of the invention and applying their basic programming skills.

Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel 10 or independently of each other.

A1, a method for indicating a transmission state, comprising:

A2, according to the indication method of A1, the bit information includes at least one of symbol configuration information of subframes, number of uplink subframes and configurable information, configurable uplink subframe status information and trigger relative time information.

A3, according to the indication method of A2, when the bit information includes symbol configuration information of a subframe, the step of indicating the status information of uplink transmission and/or downlink transmission according to the bit information includes:

indicating the OFDM symbol configuration condition of the current subframe or the next subframe according to the symbol configuration information of the subframe, wherein the OFDM symbol configuration condition comprises the number of downlink OFDM symbols, the number of null OFDM symbols and the number of uplink OFDM symbols;

A4, according to the indication method of A3, the number of downlink OFDM symbols is obtained by high-level signaling configuration, and the number of corresponding uplink OFDM symbols is 0.

A5, according to the indication method of a2, when the bit information includes the number of uplink subframes and the configurable information, the step of determining the bit information carried in the common physical downlink control channel CPDCCH includes:

and determining the number of uplink subframes and configurable information carried in the CPDCCH according to at least one configurable uplink subframe set which is configured by a high-level signaling and corresponds to different uplink subframe numbers.

A6, according to the indication method of a5, when the bit information includes configurable uplink subframe status information, the step of determining the bit information carried in the common physical downlink control channel CPDCCH includes:

and determining the configurable uplink subframe state information carried in the CPDCCH according to a transmission state set configured by a high-level signaling.

A7, according to the indication method of A6, the configurable uplink subframe status information is used for directly indicating the transmission status of the configurable uplink subframe.

A8, according to the indication method of a2, when the bit information includes trigger relative time information, the step of determining bit information carried in a common physical downlink control channel (cpccch) includes:

and determining the trigger relative time information carried in the CPDCCH according to the interval granularity, the maximum time range or a plurality of time difference information configured by the high-level signaling.

A9, according to the indicating method of A2 or A8, when the bit information includes trigger relative time information, the step of indicating the status information of uplink transmission and/or downlink transmission according to the bit information includes:

and indicating the time difference information of the CPDCCH and the uplink scheduling Grant (UL Grant) according to the trigger relative time information.

A10, according to the indication method of A9, the time difference information is uniformly distributed, non-uniformly distributed or recycled.

A11, according to the indication method of A9, when the indication information in the CPDCCH does not match the indication information in the UL Grant, indicating according to the indication information in the CPDCCH.

A12, an indicating device for transmission status, comprising:

A13, the indication device of A12, wherein the bit information includes at least one of symbol configuration information, number of uplink subframes and configurable information, configurable uplink subframe status information and trigger relative time information of subframes.

A14, the indication apparatus of A13, wherein when the bit information includes symbol configuration information of a subframe, the indication module comprises:

A15, according to the indicating device of A14, the number of downlink OFDM symbols is configured by high-level signaling, and the number of corresponding uplink OFDM symbols is 0.

A16, according to the indicating apparatus of A13, when the bit information includes the number of uplink subframes and configurable information, the determining module includes:

A17, according to the indicating apparatus of A16, when the bit information includes configurable uplink subframe status information, the determining module includes:

A18, according to the indication device of A17, the configurable uplink subframe status information is used for directly indicating the transmission status of the configurable uplink subframe.

A19, the indication apparatus of A13, wherein when the bit information includes trigger relative time information, the determining means comprises:

A20, the indication device according to A13 or A19, wherein when the bit information includes trigger relative time information, the indication module includes:

A21, the indicating device of A20, wherein the time difference information is uniformly distributed, non-uniformly distributed or recycled.

A22, the indicating device of A20, wherein when the indication information in the CPDCCH does not match the indication information in the UL Grant, indicating is performed according to the indication information in the CPDCCH.

Claims

1. A method for indicating a transmission status, comprising:

indicating the state information of uplink transmission and/or downlink transmission according to the bit information;

wherein the bit information comprises at least one of symbol configuration information of subframes, the number of uplink subframes and configurable information, configurable uplink subframe state information and trigger relative time information;

the symbol configuration information of the subframe is used for indicating the Orthogonal Frequency Division Multiplexing (OFDM) symbol configuration condition of the current subframe or the next subframe; the number of uplink subframes and configurable information are used to indicate the number of uplink subframes and a configurable set of subframes for a respective transmission opportunity TxOP; the configurable uplink subframe state information is used for indicating the transmission state of a configurable uplink subframe; the trigger relative time information is used for indicating the time difference information of the CPDCCH and the uplink scheduling Grant (UL Grant).

2. The method according to claim 1, wherein when the bit information includes symbol configuration information of a subframe, the step of indicating status information of uplink transmission and/or downlink transmission according to the bit information comprises:

3. The indication method according to claim 2, wherein the number of downlink OFDM symbols is configured by a higher layer signaling, and the number of corresponding uplink OFDM symbols is 0.

4. The indication method according to claim 1, wherein when the bit information includes the number of uplink subframes and configurable information, the step of determining the bit information carried in the Common Physical Downlink Control Channel (CPDCCH) comprises:

5. The indication method according to claim 4, wherein when the bit information includes configurable uplink subframe status information, the step of determining bit information carried in a Common Physical Downlink Control Channel (CPDCCH) comprises:

6. The indication method according to claim 1, wherein when the bit information includes trigger relative time information, the step of determining bit information carried in a Common Physical Downlink Control Channel (CPDCCH) comprises:

7. The indication method according to claim 1, wherein the time difference information is uniformly distributed, non-uniformly distributed, or recycled.

8. The indication method according to claim 1, wherein when the indication information in the CPDCCH and the indication information in the ULGrant do not match, indicating is performed according to the indication information in the CPDCCH.

9. An apparatus for indicating a transmission status, comprising:

the indicating module is used for indicating the state information of uplink transmission and/or downlink transmission according to the bit information;

the symbol configuration information of the subframe is used for indicating the Orthogonal Frequency Division Multiplexing (OFDM) symbol configuration condition of the current subframe or the next subframe; the number of uplink subframes and configurable information are used to indicate the number of uplink subframes and a configurable set of subframes for the respective TxOP; the configurable uplink subframe state information is used for indicating the transmission state of a configurable uplink subframe; the trigger relative time information is used to indicate time difference information of the CPDCCH and the UL Grant.

10. The apparatus according to claim 9, wherein when the bit information comprises symbol configuration information of a subframe, the indication module comprises:

11. The apparatus according to claim 10, wherein the number of downlink OFDM symbols is configured by higher layer signaling, and the number of corresponding uplink OFDM symbols is 0.

12. The apparatus of claim 9, wherein when the bit information comprises the number of uplink subframes and configurable information, the determining module comprises:

13. The apparatus of claim 12, wherein when the bit information comprises configurable uplink subframe status information, the determining module comprises:

14. The indication apparatus according to claim 9, wherein when the bit information includes trigger relative time information, the determining module comprises:

15. The indication device of claim 9, wherein the time difference information is uniformly distributed, non-uniformly distributed, or recycled.

16. The apparatus of claim 9, wherein when the indication information in the CPDCCH and the indication information in the UL Grant do not match, indicating is performed according to the indication information in the CPDCCH.