CN106304372B

CN106304372B - Uplink scheduling method, device, equipment and system

Info

Publication number: CN106304372B
Application number: CN201510250943.4A
Authority: CN
Inventors: 柯颋; 童辉; 刘建军; 沈晓冬; 侯雪颖; 王锐
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2015-05-15
Filing date: 2015-05-15
Publication date: 2020-01-03
Anticipated expiration: 2035-05-15
Also published as: WO2016184365A1; CN106304372A

Abstract

The invention discloses an uplink scheduling method, device, equipment and system, which are used for solving the problems that the uplink scheduling mechanism of an LTE system on an unauthorized frequency band in the prior art may cause large scheduling signaling overhead and scheduling signaling waste on a network side. The method comprises the following steps: a base station sends Uplink (UL) resource scheduling information to User Equipment (UE) in a first subframe to indicate the UE to start to compete for a channel access opportunity from a second subframe, and the UL resource indicated by the UL resource scheduling information is used when the UE successfully competes for the channel access opportunity; wherein a first time delay exists between the first subframe and the second subframe; and from the second subframe, when the UE is judged to utilize the UL resource to carry out uplink transmission or the UL resource scheduling information is judged to be invalid, releasing the UL resource indicated by the UL resource scheduling information.

Description

Uplink scheduling method, device, equipment and system

Technical Field

The present invention relates to the field of network communication technologies, and in particular, to a method, an apparatus, a device, and a system for uplink scheduling.

Background

With the rapid increase of data traffic in the mobile internet, it has become a development trend to use Long Term Evolution (LTE) technology on an unlicensed frequency band (U-band). The unlicensed frequency band is open to all operators, and different operators have the same right to deploy LTE in the unlicensed frequency band. In order to enable a heterogeneous system or a heterogeneous operator to compete fairly for using an unlicensed frequency band, a Listen Before Talk (LBT) mechanism is introduced, that is, before data transmission is performed each time, a period of time is reserved to sense a carrier, a Clear Channel Assessment (CCA) process is performed, data transmission is started when the carrier is sensed to be available, and the maximum duration of data transmission is limited each time.

In order to ensure the reliability of service transmission on the unauthorized frequency band, an authorized frequency band (L-band) can be adopted to assist the unauthorized frequency band in service transmission, the reliability of the authorized frequency band is combined with the abundant bandwidth resources of the unauthorized frequency band, and the system throughput is improved while the reliability of service transmission is ensured. Specifically, in order to ensure the performance of LTE in the unlicensed frequency band, the current protocol requires that an LTE technology is used in the unlicensed frequency band by Carrier Aggregation (CA) or dual connectivity. In the CA mode, a carrier on an authorized frequency band is used as a main carrier, and a carrier on an unauthorized frequency band is used as an auxiliary carrier, so that an unauthorized frequency band access mode assisted by the authorized frequency band, i.e., assisted authorized access (LAA), is implemented.

When a User Equipment (UE) is allowed to transmit uplink data on a U-band, the UE also needs to comply with the LBT specification. Therefore, the uplink transmission of the UE on the U-band is an opportunistic transmission, that is, after the UE is scheduled, the UE does not always successfully contend for the channel access opportunity each time.

In the existing LTE technology, the UL resource of the UE is allocated in advance by an evolved Node B (eNB). Since the contention environment of the U-band channel is complex and variable, when the eNB sends the UL resource scheduling information to the UE (for example, at the subframe n), it cannot be predicted in advance whether the UE can contend for the channel access opportunity at the scheduled time (for example, at the subframe n + k). If the UE fails to successfully contend for the channel access opportunity at subframe n + k, the UL resource scheduling information sent at subframe n is invalidated due to failure, which results in unnecessary scheduling signaling overhead and also causes waste of UL resources allocated by the eNB for the UE.

Further, if the UE cannot compete for the Channel access opportunity all the time, the eNB needs to continuously allocate UL resources to the UE, and send UL resource scheduling information in a Physical Downlink Control Channel (PDCCH), which may cause a large scheduling signaling overhead and a waste of scheduling signaling for the eNB.

Disclosure of Invention

Embodiments of the present invention provide an uplink scheduling method, apparatus, device, and system, so as to solve the problem in the prior art that an uplink scheduling mechanism of an LTE system on an unlicensed frequency band may cause a large scheduling signaling overhead and scheduling signaling waste on a network side.

The embodiment of the invention adopts the following technical scheme:

a first aspect provides an uplink scheduling method, including:

the base station sends Uplink (UL) resource scheduling information to User Equipment (UE) in a first subframe to indicate that the UE starts to compete for a channel access opportunity from a second subframe and uses UL resources indicated by the UL resource scheduling information when successfully competing for the channel access opportunity; a first time delay exists between the first subframe and the second subframe;

and from the second subframe, when the UE is judged to utilize the UL resource for uplink transmission or the UL resource scheduling information is judged to be invalid, releasing the UL resource indicated by the UL resource scheduling information.

Wherein, starting from the second subframe, when it is determined that the UE performs uplink transmission by using the UL resource, releasing the UL resource indicated by the UL resource scheduling information specifically includes:

from the second subframe, blind detecting whether a demodulation reference signal sent by the UE exists on the UL resource indicated by the UL resource scheduling information; when the demodulation reference signal is detected to exist, determining that the UE utilizes the UL resource to carry out uplink transmission, and releasing the UL resource indicated by the UL resource scheduling information; or

From the second subframe, blind detecting whether transmission data of the UE exist on UL resources indicated by the UL resource scheduling information; when the existence of transmission data is detected, determining that the UE utilizes the UL resources to carry out uplink transmission, and releasing the UL resources indicated by the UL resource scheduling information; or

From the second subframe, blind detecting whether a preamble part subframe sent by the UE exists on UL resources indicated by the UL resource scheduling information; and when the preamble part subframe is detected to exist, determining that the UE utilizes the UL resource to carry out uplink transmission, and releasing the UL resource indicated by the UL resource scheduling information.

Wherein, starting from the second subframe, when determining that the UL resource scheduling information is invalid, releasing the UL resource indicated by the UL resource scheduling information, specifically includes:

judging whether the UE utilizes the UL resources to carry out uplink transmission within a preset time period from the second subframe; when the UE is judged not to utilize the UL resources to carry out uplink transmission within a preset time period, determining that the UL resource scheduling information is invalid, and releasing the UL resources indicated by the UL resource scheduling information; the time period is from a second subframe to a third subframe, and a second time delay exists between the second subframe and the third subframe; or

Judging whether the base station sends resource failure information to the UE from the second subframe; when the base station is judged to send the resource failure information to the UE, determining that the UL resource scheduling information is failed, and releasing the UL resource indicated by the UL resource scheduling information; or

Judging whether the base station sends new UL resource scheduling information to the UE from the second subframe; wherein, the UL resource indicated by the new UL resource scheduling information is reallocated by the base station for the UE; and when judging that the base station sends new UL resource scheduling information to the UE, determining that the UL resource scheduling information is invalid, and releasing the UL resource indicated by the UL resource scheduling information.

The bearing mode of the UL resource scheduling information on the frequency domain is any one of the following modes:

carrying on the authorized frequency band of the base station;

carrying on the unlicensed frequency band which is in the same frequency band as the UL resources indicated by the UL resource scheduling information;

and carrying on other unlicensed frequency bands of different frequency bands from the UL resources indicated by the UL resource scheduling information.

The base station sends UL resource scheduling information to the UE in the first subframe, which specifically includes:

the base station sends UL resource scheduling information to the UE in a first subframe; wherein, the UL resource scheduling information includes: the total number N of schedulable subframes and a first UL resource scheduling parameter; n represents that when the UE utilizes the UL resources to carry out uplink transmission, N UL subframes can be scheduled simultaneously, and N is an integer greater than or equal to 1; the first UL resource scheduling parameter is a configuration parameter of each UL subframe used when the UE performs uplink transmission using UL resources.

a base station sends at least one piece of UL resource scheduling information to UE, and the last piece of UL resource scheduling information in the at least one piece of UL resource scheduling information is sent in a first subframe; wherein, each piece of UL resource scheduling information includes: the scheduling sequence number N of the schedulable subframes, the second UL resource scheduling parameter and the total number N of the schedulable subframes; wherein, N represents that when UE utilizes UL resources to perform uplink transmission, N UL subframes can be scheduled simultaneously, and N is an integer greater than or equal to 1; n represents the sequence number of the currently scheduled UL sub-frame in N UL sub-frames which can be scheduled simultaneously when the UE utilizes UL resources to perform uplink transmission, the value range of N is 0 to N-1, and the value of N is sequentially increased according to the transmission sequence of UL resource scheduling information; the second UL resource scheduling parameter is a configuration parameter of a UL subframe corresponding to N among N UL subframes that the UE can simultaneously schedule.

A second aspect provides an uplink scheduling method, including:

user Equipment (UE) receives Uplink (UL) resource scheduling information sent by a base station in a first subframe; and are

Starting to compete for the channel access opportunity from the second subframe until the channel access opportunity is successfully competed or the UL resource indicated by the UL resource scheduling information is invalid; and a first time delay exists between the first subframe and the second subframe.

Starting to contend for the channel access opportunity from the second subframe until the UL resource indicated by the UL resource scheduling information is invalid, specifically including:

when the UE starts to compete for the channel access opportunity from the second subframe, if the UE does not successfully compete for the channel access opportunity within a preset time period, determining that the UL resource scheduling information is invalid, and stopping competing for the channel access opportunity; the time period is from a second subframe to a third subframe, and a second time delay exists between the second subframe and the third subframe; or

When UE starts to compete for the channel access opportunity from a second subframe, if the UE receives resource failure information sent by a base station, determining that UL resource scheduling information is failed, and stopping competing for the channel access opportunity; or

When UE starts to compete for the channel access opportunity from the second subframe, if the UE receives new UL resource scheduling information sent by the base station, determining that the UL resource scheduling information is invalid, and stopping competing for the channel access opportunity; wherein the UL resource indicated by the new UL resource scheduling information is reallocated by the base station for the UE.

Wherein, the method further comprises:

and when the UE successfully competes to the channel access opportunity, carrying out uplink transmission by using the UL resource indicated by the UL resource scheduling information.

The receiving, by the UE, UL resource scheduling information sent by the base station in the first subframe specifically includes:

the UE receives UL resource scheduling information sent by a base station in a first subframe; wherein, the UL resource scheduling information includes: the total number N of schedulable subframes and a first UL resource scheduling parameter; the total number N of the schedulable subframes represents that N UL subframes can be scheduled simultaneously when the UE utilizes UL resources to carry out uplink transmission, wherein N is an integer more than or equal to 1; the first UL resource scheduling parameter is a configuration parameter of each UL subframe used when the UE utilizes the UL resource to carry out uplink transmission; then

When the UE successfully competes for the channel access opportunity, the uplink transmission is performed by using the UL resource indicated by the UL resource scheduling information, which specifically includes:

and when the UE successfully competes to the channel access opportunity, performing uplink transmission on N UL subframes from the time of successfully competing to the channel access opportunity according to the first UL resource scheduling parameter.

receiving at least one piece of UL resource scheduling information sent by a base station, wherein the last piece of UL resource scheduling information in the at least one piece of UL resource scheduling information is received in a first subframe; wherein, each piece of UL resource scheduling information includes: the scheduling sequence number N of the schedulable subframes, the second UL resource scheduling parameter and the total number N of the schedulable subframes; wherein, N represents that when UE utilizes UL resources to perform uplink transmission, N UL subframes can be scheduled simultaneously, and N is an integer greater than or equal to 1; n represents the sequence number of the currently scheduled UL sub-frame in N UL sub-frames which can be scheduled simultaneously when the UE utilizes UL resources to perform uplink transmission, the value range of N is 0 to N-1, and the value of N is sequentially increased according to the transmission sequence of UL resource scheduling information; the second UL resource scheduling parameter is a configuration parameter of a UL subframe corresponding to N in N UL subframes which can be scheduled by the UE at the same time; then

and when the UE successfully competes to the channel access opportunity, sequentially using second UL resource scheduling parameters corresponding to N according to the sequence from small to large of N in each piece of received UL resource scheduling information, and performing uplink transmission on N UL subframes from the successful competition to the channel access opportunity.

A third aspect provides an uplink scheduling apparatus, including:

a UL resource scheduling information sending unit, configured to send uplink UL resource scheduling information to the UE in the first subframe to indicate that the UE starts to contend for the channel access opportunity from the second subframe, and use the UL resource indicated by the UL resource scheduling information when successfully contending for the channel access opportunity; a first time delay exists between the first subframe and the second subframe;

and an UL resource scheduling information releasing unit, configured to release, from the second subframe, the UL resource indicated by the UL resource scheduling information when it is determined that the UE performs uplink transmission using the UL resource or it is determined that the UL resource scheduling information is invalid.

The UL resource scheduling information releasing unit is specifically configured to:

carrying on the authorized frequency band of the base station;

The UL resource scheduling information sending unit is specifically configured to:

transmitting UL resource scheduling information to the UE in a first subframe; wherein, the UL resource scheduling information includes: the total number N of schedulable subframes and a first UL resource scheduling parameter; n represents that when the UE utilizes the UL resources to carry out uplink transmission, N UL subframes can be scheduled simultaneously, and N is an integer greater than or equal to 1; the first UL resource scheduling parameter is a configuration parameter of each UL subframe used when the UE performs uplink transmission using UL resources.

sending at least one piece of UL resource scheduling information to the UE, wherein the last piece of UL resource scheduling information in the at least one piece of UL resource scheduling information is sent in a first subframe; wherein, each piece of UL resource scheduling information includes: the scheduling sequence number N of the schedulable subframes, the second UL resource scheduling parameter and the total number N of the schedulable subframes; wherein, N represents that when UE utilizes UL resources to perform uplink transmission, N UL subframes can be scheduled simultaneously, and N is an integer greater than or equal to 1; n represents the sequence number of the currently scheduled UL sub-frame in N UL sub-frames which can be scheduled simultaneously when the UE utilizes UL resources to perform uplink transmission, the value range of N is 0 to N-1, and the value of N is sequentially increased according to the transmission sequence of UL resource scheduling information; the second UL resource scheduling parameter is a configuration parameter of a UL subframe corresponding to N among N UL subframes that the UE can simultaneously schedule.

A fourth aspect provides an uplink scheduling apparatus, including:

a UL resource scheduling information receiving unit, configured to receive, at a first subframe, uplink UL resource scheduling information sent by a base station;

a contention unit, configured to start to contend for the channel access opportunity from the second subframe until the channel access opportunity is successfully contended or the UL resource indicated by the UL resource scheduling information is invalid; and a first time delay exists between the first subframe and the second subframe.

Wherein, the competition unit is specifically configured to:

when the channel access opportunity is contended from the second subframe, if the channel access opportunity is not successfully contended within a preset time period, determining that the UL resource scheduling information is invalid, and stopping contending the channel access opportunity; the time period is from a second subframe to a third subframe, and a second time delay exists between the second subframe and the third subframe; or

When starting to compete for the channel access opportunity from the second subframe, if receiving resource failure information sent by the base station, determining that the UL resource scheduling information is failed, and stopping competing for the channel access opportunity; or

When starting to compete for the channel access opportunity from the second subframe, if receiving new UL resource scheduling information sent by the base station, determining that the UL resource scheduling information is invalid, and stopping competing for the channel access opportunity; wherein the UL resource indicated by the new UL resource scheduling information is reallocated by the base station.

Wherein, the device still includes:

and the transmission unit is used for performing uplink transmission by using the UL resource indicated by the UL resource scheduling information when the successful competition reaches the channel access opportunity.

The UL resource scheduling information receiving unit is specifically configured to:

receiving UL resource scheduling information sent by a base station in a first subframe; wherein, the UL resource scheduling information includes: the total number N of schedulable subframes and a first UL resource scheduling parameter; the total number N of the schedulable subframes represents that N UL subframes can be scheduled simultaneously when the UE utilizes UL resources to carry out uplink transmission, wherein N is an integer more than or equal to 1; the first UL resource scheduling parameter is a configuration parameter of each UL subframe used when the UE utilizes the UL resource to carry out uplink transmission;

a transmission unit, specifically configured to:

and when the successful contention to the channel access opportunity occurs, performing uplink transmission on N UL subframes from the successful contention to the channel access opportunity according to the first UL resource scheduling parameter.

receiving at least one piece of UL resource scheduling information sent by a base station, wherein the last piece of UL resource scheduling information in the at least one piece of UL resource scheduling information is received in a first subframe; wherein, each piece of UL resource scheduling information includes: the scheduling sequence number N of the schedulable subframes, the second UL resource scheduling parameter and the total number N of the schedulable subframes; wherein, N represents that when UE utilizes UL resources to perform uplink transmission, N UL subframes can be scheduled simultaneously, and N is an integer greater than or equal to 1; n represents the sequence number of the currently scheduled UL sub-frame in N UL sub-frames which can be scheduled simultaneously when the UE utilizes UL resources to perform uplink transmission, the value range of N is 0 to N-1, and the value of N is sequentially increased according to the transmission sequence of UL resource scheduling information; the second UL resource scheduling parameter is a configuration parameter of a UL subframe corresponding to N in N UL subframes which can be scheduled by the UE at the same time;

a transmission unit, specifically configured to:

and when successful competition reaches the channel access opportunity, sequentially using second UL resource scheduling parameters corresponding to N according to the sequence from small to large of N in each piece of received UL resource scheduling information, and performing uplink transmission on N UL subframes from the successful competition to the channel access opportunity.

A fifth aspect provides a base station device, including the uplink scheduling apparatus in any of the third aspects.

A sixth aspect provides a user equipment, including the uplink scheduling apparatus in any of the fourth aspects.

A seventh aspect provides an uplink scheduling system, including: the base station and the user equipment.

The embodiment of the invention has the following beneficial effects:

in the embodiment of the invention, a base station sends UL resource scheduling information to UE at a first subframe to indicate the UE to start to compete for a channel access opportunity from a second subframe, uses the UL resource indicated by the UL resource scheduling information when the channel access opportunity is successfully competed, judges whether the UE utilizes the UL resource to carry out uplink transmission or judges whether the UL resource scheduling information is invalid from the second subframe, and releases the UL resource indicated by the UL resource scheduling information when judging that the UE utilizes the UL resource to carry out uplink transmission or judging that the UL resource scheduling information is invalid. That is, the base station reserves the UL resource indicated by the UL resource scheduling information for the UE from the second subframe until the UE performs uplink transmission using the UL resource or the UL resource scheduling information is invalid, and the above-mentioned "reservation" does not mean that the base station cannot schedule other UEs on the reserved UL resource, but the UE can ensure that the UE obtains service on the reserved UL resource once contends for a channel access opportunity from the second subframe.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a flowchart illustrating an implementation of an uplink scheduling method implemented by a network side according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating an implementation of an uplink scheduling method implemented by a terminal according to an embodiment of the present invention;

FIG. 3 is a diagram illustrating single subframe scheduling;

fig. 4 is a flowchart illustrating an implementation of an uplink scheduling method implemented by a network side according to another embodiment of the present invention;

FIG. 5 is a diagram illustrating a multi-subframe tone map;

fig. 6 is a flowchart of an implementation of an uplink scheduling method implemented by a network side according to another embodiment of the present invention;

fig. 7 is a flowchart illustrating an implementation of an uplink scheduling method implemented by a terminal according to another embodiment of the present invention;

fig. 8 is a flowchart illustrating an implementation of an uplink scheduling method implemented by a terminal according to another embodiment of the present invention;

fig. 9 is a schematic structural diagram of a first uplink scheduling apparatus according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a second uplink scheduling apparatus according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of an uplink scheduling system according to an embodiment of the present invention.

Detailed Description

In order to solve the problem that an uplink scheduling mechanism of an LTE system on an unlicensed frequency band in the prior art may cause a large scheduling signaling overhead and scheduling signaling waste on a network side, the present inventors have made detailed studies on a conventional uplink scheduling mechanism. The uplink scheduling process of the conventional LTE is as follows:

1. the eNB centrally allocates UL resources for all served UEs;

2. the eNB informs the related UE of UL resource scheduling information through the PDCCH;

1) the frequency domain location Information of the UL resources indicated by the UL resource scheduling Information is explicitly carried in a Downlink Control Information (DCI) format, where:

the DCI format for carrying the UL resource scheduling information is DCI format 0 or DCI format 4;

DCI format 0/4 includes fields:

resource block assignment and hopping Resource allocation, which is used for indicating the frequency domain position information of UL resources;

many other fields are also included in DCI format 0/4, some of which important fields include:

modulation and coding scheme and redundancy version information used for indicating Modulation and coding mode and redundancy retransmission version information;

a TPC command for scheduled PUSCH for indicating transmission power control information;

a UL index, which is a field (2bit) that exists only when a Time Division multiplexing (TDD) system has an uplink/downlink subframe matching mode of 0, and is used to support scheduling of more than 1 UL subframe;

2) the time domain subframe position of the UL resource indicated by the UL resource scheduling information is determined by an implicit rule, wherein:

when the eNB is a Frequency Division multiplexing (FDD) system, assuming that the UE receives DCI or a retransmission instruction at subframe n, the UE implements a corresponding Physical Uplink Shared Channel (PUSCH) transmission at subframe n + 4;

when the eNB is a TDD system and the uplink and downlink subframe matching mode is not 0, or the TDD uplink and downlink subframe matching mode is exactly equal to 0 but UL resource scheduling information is carried in DCI format 4, only one UL resource is scheduled in one DL subframe, and assuming that the UE receives DCI or retransmission indication at subframe n, the UE implements corresponding PUSCH transmission at subframe n + k, where a value of k is related to the TDD uplink and downlink subframe matching mode, and a specific value of k may be referred to in table 1 below.

Table 1:

when the eNB is a TDD system and the uplink and downlink subframe proportioning mode is exactly equal to 0, and when UL resource scheduling information is carried in DCI Format 0, one DL subframe is allowed to schedule two UL subframes at most. Which subframes are specifically scheduled is determined by the field UL index in DCIFormat 0. When the Most Significant Bit (MSB) of UL index is set to 1, designating the UE to transmit PUSCH at subframe n + k; when the Least Significant Bit (LSB) of the UL index is set to 1, the UE is designated to transmit the PUSCH in subframe n + 7; when MSB and LSB of UL index are both 1, UE is appointed to simultaneously send PUSCH on a subframe n + k and a subframe n + 7;

in summary, in the conventional LTE uplink scheduling technique, the eNB centrally allocates UL resources to all served UEs, and the eNB notifies relevant UEs of UL resource scheduling information through the PDCCH, and the frequency domain location information of the allocated UL resources is explicitly carried in the DCI format, while the time domain subframe location of the UL resources is determined by an implicit rule, and the time domain subframe location (n + k) of the allocated UL resources has a definite time interval relationship with the subframe (n) where the DCI is located. In particular, for FDD systems, k is 4; for TDD, k is determined by the uplink and downlink subframe matching mode of TDD.

Based on the conventional LTE uplink scheduling mechanism, in combination with the existing problems, the embodiments of the present invention improve it and provide an uplink scheduling scheme. In the technical scheme, a base station sends UL resource scheduling information to UE (user equipment) in a first subframe to indicate the UE to start to compete for a channel access opportunity from a second subframe, uses UL resources indicated by the UL resource scheduling information when the UE successfully competes for the channel access opportunity, judges whether the UE utilizes the UL resources to perform uplink transmission or judges whether the UL resource scheduling information is invalid from the second subframe, and releases the UL resources indicated by the UL resource scheduling information when judging that the UE utilizes the UL resources to perform uplink transmission or judging that the UL resource scheduling information is invalid. That is, the base station reserves the UL resource indicated by the UL resource scheduling information for the UE from the second subframe until the UE performs uplink transmission using the UL resource or the UL resource scheduling information is invalid, so that the base station can save a large amount of signaling scheduling overhead and also does not cause the waste of the scheduling signaling.

The embodiments of the present invention will be described in conjunction with the drawings of the specification, and it should be understood that they are presented herein only for the purpose of illustrating and explaining the invention, and not for the purpose of limiting the invention. And embodiments of the invention and features of the embodiments may be combined with each other without conflict.

It should be noted that the uplink scheduling method provided in the embodiment of the present invention may be applied in an application scenario of an unlicensed frequency band, and may also be applied in an application scenario of other licensed frequency bands, that is, the application scenario of the uplink scheduling method provided in the embodiment of the present invention is not limited.

An embodiment of the present invention provides an uplink scheduling method, as shown in fig. 1, which is an implementation flowchart of the method, and specifically includes the following steps:

step 11, the base station sends UL resource scheduling information to the UE in the first subframe to indicate the UE to start to compete for the channel access opportunity from the second subframe, and uses the UL resource indicated by the UL resource scheduling information when successfully competing for the channel access opportunity; and a first time delay exists between the first subframe and the second subframe.

In the embodiment of the present invention, the first delay existing between the first subframe and the second subframe may be, but not limited to, in units of subframes, and may also be in units of Orthogonal Frequency Division Multiplexing (OFDM) symbols.

When the first delay is in units of subframes, for example, the base station sends UL resource scheduling information to the UE in subframe n, the UE starts to contend for the channel access opportunity from subframe n + k, and uses the UL resource indicated by the UL resource scheduling information when successfully contending for the channel access opportunity, where k is the first delay.

It should be noted that k may be preset, and may be a fixed value, for example, k may be 4 in an FDD system, and may be set according to an uplink and downlink subframe matching pattern in a TDD system, as shown in table 1. Or any other value.

Compared with the prior art, when the base station sends the UL resource scheduling information to the UE, the time domain subframe position of the UL resource indicated by the UL resource scheduling information is not determined by a preset implicit rule any more, namely the time domain subframe position of the UL resource indicated by the UL resource scheduling information and the subframe where the base station sends the UL resource scheduling information do not have a definite time interval relationship any more, but the base station reserves the UL resource indicated by the UL resource scheduling information for the UE from the second subframe.

It should be noted that the above-mentioned "reservation" does not mean that the base station can not schedule other UEs on the reserved UL resources, but the UE can guarantee that the UE obtains service on the reserved UL resources once contending for the channel access opportunity from the second subframe. And the base station may reserve the same UL resources for a plurality of different UEs through a scheduling technique.

In addition, in the embodiment of the present invention, the carrying manner of the UL resource scheduling information sent by the base station to the UE on the frequency domain may be, but is not limited to, any one of the following manners:

carrying on the authorized frequency band of the base station, namely cross-carrier scheduling;

carrying on the same frequency band of UL resources indicated by the UL resource scheduling information, namely self-carrier scheduling;

and carrying on other unlicensed frequency bands of different frequency bands from the UL resources indicated by the UL resource scheduling information, namely cross-carrier scheduling.

And step 12, from the second subframe, when it is determined that the UE performs uplink transmission using the UL resource indicated by the UL resource scheduling information, or it is determined that the UL resource scheduling information is invalid, releasing the UL resource indicated by the UL resource scheduling information.

Although the base station reserves the UL resource indicated by the UL resource scheduling information for the UE from the second subframe, the base station cannot reserve the UL resource without limitation because the UL resource reserved for the UE is always in an idle state if the UE cannot successfully compete for the channel access opportunity all the time, thereby causing waste of the UL resource.

Therefore, the base station determines whether the UE performs uplink transmission by using the UL resource indicated by the UL resource scheduling information or determines whether the UL resource scheduling information is invalid from the second subframe, and releases the UL resource indicated by the UL resource scheduling information when determining that the UE performs uplink transmission by using the UL resource indicated by the UL resource scheduling information or determining that the UL resource scheduling information is invalid.

From the second subframe, when it is determined that the UL resource scheduling information is invalid, the UL resource indicated by the UL resource scheduling information is released, which may be determined, but is not limited to, as follows:

the first mode is as follows:

from the second subframe, judging whether the UE utilizes the UL resources to carry out uplink transmission within a preset time period;

when the UE is judged not to utilize the UL resources to carry out uplink transmission within a preset time period, determining that the UL resource scheduling information is invalid, and releasing the UL resources indicated by the UL resource scheduling information;

the preset time period is from the second subframe to the third subframe, and a second time delay exists between the second subframe and the third subframe.

In the embodiment of the present invention, the second time delay existing between the second subframe and the third subframe may be, but not limited to, in units of subframes, and may also be in units of OFDM symbols.

When the second delay is in units of subframes, for example, the second subframe is a subframe n + k, and the third subframe is a subframe n + k + l, the second delay between the second subframe and the third subframe is l, where l may be preset, and may be a fixed value, for example, 4 or 10, or may be explicitly indicated to the UE by adding a field in the DCI.

The second mode is as follows:

judging whether the base station sends resource failure information to the UE from the second subframe;

and when judging that the base station sends the resource failure information to the UE, determining that the UL resource scheduling information is failed, and releasing the UL resource indicated by the UL resource scheduling information.

Specifically, the eNB may notify the UE that the UL resource allocated to the UE before is invalid through some dedicated signaling. For example, a new DCI may be designed to carry the resource failure information; or a new field (such as UL resource failure flag) may be added to the existing DCI to carry the resource failure information; or the resource failure information may also be sent to the UE along with Hybrid Automatic Repeat reQuest (HARQ) feedback information.

The third mode is as follows:

judging whether a base station sends new UL resource scheduling information to the UE from a second subframe; wherein, the UL resource indicated by the new UL resource scheduling information is reallocated by the base station for the UE;

and when judging that the base station sends new UL resource scheduling information to the UE, determining that the UL resource scheduling information is invalid, and releasing the UL resource indicated by the UL resource scheduling information.

In addition, in the prior art, after the base station transmits the UL resource scheduling information to the UE, since the time domain subframe position of the UL resource indicated by the UL resource scheduling information does not have a clear time interval relationship with the subframe where the base station transmits the UL resource scheduling information, the base station only needs to demodulate the uplink data of the UE at the determined time domain subframe position. However, in the embodiment of the present invention, the time domain subframe position of the UL resource indicated by the UL resource scheduling information and the subframe where the base station sends the UL resource scheduling information do not have a definite time interval relationship any more, so the base station needs to monitor when the UE obtains a channel access opportunity on the UL resource reserved for the UE all the time, that is, the base station needs to determine whether the UE utilizes the UL resource for uplink transmission from the second subframe.

Specifically, from the second subframe, when it is determined that the UE utilizes the UL resource for uplink transmission, the UL resource indicated by the UL resource scheduling information is released, which may be implemented in, but is not limited to, the following several ways:

the first mode is as follows:

from the second subframe, blind detecting whether a demodulation Reference Signal (DM RS) sent by the UE exists on the UL resource indicated by the UL resource scheduling information;

and when the demodulation reference signal is detected to exist, determining that the UE utilizes the UL resource to carry out uplink transmission, and releasing the UL resource indicated by the UL resource scheduling information.

The modem signal is in the transmission data of the UE, and the base station can determine that the UE has successfully contended for the channel access opportunity as long as it detects the DM RS in the UL resource reserved for the UE. However, in general, the DM RS symbol may start on the second or third OFDM symbol, and thus this approach has hysteresis.

To avoid missed detection, the eNB needs to buffer at least the first few OFDM symbols for each possible UL subframe until the DM RS presence decision is completed.

In particular, DM RS is cell specific (cell specific) and facilitates signal detection by the eNB. The reason is that, considering a scenario in which multiple UEs share UL frequency domain resources through frequency division multiplexing, the eNB does not need to configure different matching sequences for each UE, and can complete the presence detection of DM RS on all frequency bands by configuring one same cell specific sequence.

In summary, when the eNB detects a DM RS on a UL resource reserved for a certain UE, it determines that the UE successfully competes for a channel access opportunity, and performs uplink transmission using the UL resource; otherwise, it is determined that the UE has not successfully contended for the channel access opportunity.

The second mode is as follows:

from the second subframe, blind detecting whether transmission data of the UE exist on UL resources indicated by the UL resource scheduling information;

and when the existence of the transmission data is detected, determining that the UE utilizes the UL resource to carry out uplink transmission, and releasing the UL resource indicated by the UL resource scheduling information.

Specifically, the eNB attempts to resolve the scheduled UL resources at every possible UL subframe. If the UE can correctly demodulate, determining that the UE successfully competes for the channel access opportunity; otherwise, it is determined that the UE has not successfully contended for the channel access opportunity.

It should be noted that, since the transmission data of the UE is scrambled by a UE-specific (UE-specific) sequence, the blind detection complexity is higher in this manner than in the first manner.

The third mode is as follows:

from the second subframe, blind detecting whether a preamble part subframe sent by the UE exists on UL resources indicated by the UL resource scheduling information;

and when the preamble part subframe is detected to exist, determining that the UE utilizes the UL resource to carry out uplink transmission, and releasing the UL resource indicated by the UL resource scheduling information.

Specifically, if the UE successfully competes for the channel access opportunity, the UE first sends a preamble subframe to occupy the channel, and then really sends the uplink data after reaching the boundary of the next L-band subframe. The partial information (e.g. partial OFDM symbols) of the preamble subframe sent by the UE is UE specific. Therefore, the eNB may determine whether the UE successfully contends for the channel access opportunity by detecting the preamble subframe transmitted by the UE.

In the embodiment of the invention, a base station sends UL resource scheduling information to UE at a first subframe to indicate the UE to start to compete for a channel access opportunity from a second subframe, uses the UL resource indicated by the UL resource scheduling information when the channel access opportunity is successfully competed, judges whether the UE utilizes the UL resource to carry out uplink transmission or judges whether the UL resource scheduling information is invalid from the second subframe, and releases the UL resource indicated by the UL resource scheduling information when judging that the UE utilizes the UL resource to carry out uplink transmission or judging that the UL resource scheduling information is invalid. That is, the base station reserves the UL resource indicated by the UL resource scheduling information for the UE from the second subframe until the UE performs uplink transmission using the UL resource or the UL resource scheduling information is invalid, so that the base station can save a large amount of signaling scheduling overhead and also does not cause the waste of the scheduling signaling.

Based on the uplink scheduling method implemented by the network side, an embodiment of the present invention further provides an uplink scheduling method implemented by a terminal side, as shown in fig. 2, including the following steps:

step 21, the UE receives uplink UL resource scheduling information sent by the base station in the first subframe.

Step 22, starting to compete for the channel access opportunity from the second subframe until the channel access opportunity is successfully contended, or the UL resource indicated by the UL resource scheduling information is invalid; and a first time delay exists between the first subframe and the second subframe.

Specifically, starting to contend for the channel access opportunity from the second subframe until the UL resource indicated by the UL resource scheduling information fails, which may be implemented, but is not limited to, as follows:

the first mode is as follows:

when the UE starts to compete for the channel access opportunity from the second subframe, if the UE does not successfully compete for the channel access opportunity within a preset time period, determining that the UL resource scheduling information is invalid, and stopping competing for the channel access opportunity; the preset time period is from a second subframe to a third subframe, and a second time delay exists between the second subframe and the third subframe;

the second mode is as follows:

when UE starts to compete for the channel access opportunity from a second subframe, if the UE receives resource failure information sent by a base station, determining that UL resource scheduling information is failed, and stopping competing for the channel access opportunity;

the third mode is as follows:

The above specific implementation process corresponds to the specific implementation process implemented by the network side, and is not described herein again.

In the embodiment of the invention, the UE executes an LBT mechanism to compete for the channel access opportunity, and after the UE successfully competes for the channel access opportunity, the UE performs uplink transmission on the UL resource (mainly frequency domain resource) indicated by the UL resource scheduling information.

According to the uplink scheduling process provided by the embodiment of the present invention, after the UE successfully competes with the channel access machine, uplink transmission is performed on the UL resource (mainly, frequency domain resource) indicated by the UL resource scheduling information, and in a general case, only one UL subframe can be scheduled by one DL subframe, which means that after the UE completes uplink transmission of one subframe, the frequency domain resource is released and is reallocated to the next UE by the base station for use. Then, when one UE has multiple UL subframes to transmit at the same time, the uplink scheduling procedure described above may cause a large time interval between two adjacent schedules, thereby resulting in low transmission efficiency.

As shown in fig. 3, a single subframe scheduling diagram is shown. Wherein the eNB is in n₁The first time the UL resources are allocated for the UE 1. UE1 at m₁The time is successfully contended for the channel access opportunity. eNB in m₁And confirming that the UE successfully competes to the channel access opportunity at the moment, and releasing corresponding UL resources.

Since the UE1 also has a large amount of UL data to transmit, the eNB is at n₂The UE1 is allocated UL resources the second time at that time. Obviously, n₂>m₁. UE1 at m₂The time is successful in contending for the channel access opportunity. Since at least k subframes need to pass from sending out to taking effect for UL signaling, m is therefore₂-n₂K is more than or equal to k. So the UE needs to wait at least between two last transmission opportunities: m is₂-m₁≥k+n₂-m₁>k + 1. Namely, it isWhen the UE transmits 1 UL subframe, at least k +1 subframes need to be waited in the middle, so the maximum transmission efficiency of the UE is less than or equal to 1/(k + 1).

Considering that there are a large number of other devices (e.g., WIFI) in the U-band environment, the UE does not always successfully contend for the channel access opportunity each time, so that a longer waiting time is experienced between two UL transmissions, i.e., the actual UE transmission efficiency is much lower than 1/(k + 1).

Based on the above analysis, the current uplink scheduling procedure will result in lower UL transmission efficiency of the UE.

In order to further solve the problem, the embodiment of the present invention improves the uplink scheduling procedure, so that when the UE successfully competes for the channel access opportunity, multiple UL subframes can be transmitted simultaneously.

As shown in fig. 4, an implementation flowchart of another uplink scheduling method implemented by a network side according to an embodiment of the present invention specifically includes the following steps:

step 41, the base station sends UL resource scheduling information to the UE in the first subframe to indicate the UE to start to compete for the channel access opportunity from the second subframe, and uses the UL resource indicated by the UL resource scheduling information when successfully competing for the channel access opportunity; wherein, the UL resource scheduling information includes: the method comprises the steps of scheduling the total number N of the subframes which can be scheduled and a first UL resource scheduling parameter, wherein N represents that N UL subframes can be scheduled simultaneously when the UE utilizes UL resources to carry out uplink transmission, N is an integer which is more than or equal to 1, and the first UL resource scheduling parameter is a configuration parameter of each UL subframe used when the UE utilizes the UL resources to carry out uplink transmission.

A first time delay exists between the first subframe and the second subframe.

In this embodiment, the base station configures the same scheduling parameter for each UL subframe used when the UE performs uplink transmission using UL resources.

Optionally, the method may be implemented by adding a new field in the DCI format:

subframe number N in UL TXOP；

some regional specifications limit the maximum transmission time length, which is called txop (transmission opportunity). For example, in Japan, TXOP is required to be less than or equal to 4 ms; in Europe, TXOP is required to be 10ms or less. Therefore, in the area with the constraint of TXOP specification, the total duration of one-time UL transmission is required to be less than or equal to TXOP, and the embodiment of the invention can set N to be 4 without limitation.

And 42, from the second subframe, when the UE is judged to utilize the UL resource for uplink transmission or the UL resource scheduling information is judged to be invalid, releasing the UL resource indicated by the UL resource scheduling information.

The implementation process of this step is similar to the implementation process of step 12 described above, and is not described herein again.

Fig. 5 is a schematic diagram of a multi-subframe tone map implemented according to the above embodiment. Wherein eNB is in m₁At time, it is confirmed that the UE successfully competes for the channel access opportunity, and therefore m₁And releasing the corresponding UL resources at the moment. In particular, if the UE still has UL data to transmit, the eNB may acknowledge the second subframe (m) after the last successfully contended channel access opportunity for the UE₁+1, i.e. n₂) The UE starts to be allocated the next UL resource. Ideally, the UE is m after the last UL transmission is over₂The time is again contended for a channel access opportunity and a new UL transmission is immediately started. That is, in the UL multi-subframe transmission mode, UL scheduling does not become a bottleneck limiting UL transmission efficiency.

As shown in fig. 6, an implementation flowchart of another uplink scheduling method implemented by a network side according to an embodiment of the present invention specifically includes the following steps:

step 61, the base station sends at least one piece of UL resource scheduling information to the UE, and the last piece of UL resource scheduling information in the at least one piece of UL resource scheduling information is sent in the first subframe to indicate that the UE starts to compete for the channel access opportunity from the second subframe, and uses the UL resource indicated by the UL resource scheduling information when successfully competing for the channel access opportunity; wherein, each piece of UL resource scheduling information includes: the scheduling sequence number N of the schedulable subframes, the second UL resource scheduling parameter and the total number N of the schedulable subframes; wherein, N represents that when UE utilizes UL resources to perform uplink transmission, N UL subframes can be scheduled simultaneously, and N is an integer greater than or equal to 1; n represents the sequence number of the currently scheduled UL sub-frame in N UL sub-frames which can be scheduled simultaneously when the UE utilizes UL resources to perform uplink transmission, the value range of N is 0 to N-1, and the value of N is sequentially increased according to the transmission sequence of the UL resource scheduling information; the second UL resource scheduling parameter is a configuration parameter of a UL subframe corresponding to N among N UL subframes that the UE can simultaneously schedule.

A first time delay exists between the first subframe and the second subframe.

In this embodiment, the base station configures not exactly the same scheduling parameters for each UL subframe used when the UE performs uplink transmission using UL resources.

Subframe sequence number n in UL TXOP；

and step 62, from the second subframe, when it is determined that the UE performs uplink transmission using the UL resource or it is determined that the UL resource scheduling information is invalid, releasing the UL resource indicated by the UL resource scheduling information.

In addition, it should be noted that the function of the UL index field in the DCI format 0 in the prior art overlaps with the function of the embodiment of the present invention. Therefore, after the scheme of the embodiment of the invention is adopted, the field UL index is not needed, so that the UL index field in the DCI format 0 can be cancelled, and the saved bit number can be stolen for other use. In particular, the existing UL index field may be multiplexed to indicate multi-subframe scheduling information, so as to reduce DCI overhead caused by a multi-subframe scheduling manner.

Based on the above improvement of the network side, an embodiment of the present invention further provides another uplink scheduling method implemented by the terminal side, as shown in fig. 7, including the following steps:

step 71, the UE receives UL resource scheduling information sent by the base station in a first subframe; wherein, the UL resource scheduling information includes: the total number N of schedulable subframes and a first UL resource scheduling parameter; n represents that when the UE utilizes the UL resources to carry out uplink transmission, N UL subframes can be scheduled simultaneously, and N is an integer greater than or equal to 1; the first UL resource scheduling parameter is a configuration parameter of each UL subframe used when the UE performs uplink transmission using UL resources.

And 72, starting to compete for the channel access opportunity from the second subframe until the channel access opportunity is successfully contended, or the UL resource indicated by the UL resource scheduling information is invalid.

And 73, when the UE successfully competes to the channel access opportunity, performing uplink transmission on N UL subframes from the time of successful competition to the channel access opportunity according to the first UL resource scheduling parameter.

The embodiment of the present invention further provides another uplink scheduling method implemented by a terminal side, as shown in fig. 8, including the following steps:

step 81, receiving at least one piece of UL resource scheduling information sent by the base station, wherein the last piece of UL resource scheduling information in the at least one piece of UL resource scheduling information is received in a first subframe; wherein, each piece of UL resource scheduling information includes: the scheduling sequence number N of the schedulable subframes, the second UL resource scheduling parameter and the total number N of the schedulable subframes; wherein, N represents that when UE utilizes UL resources to perform uplink transmission, N UL subframes can be scheduled simultaneously, and N is an integer greater than or equal to 1; n represents the sequence number of the currently scheduled UL sub-frame in N UL sub-frames which can be scheduled simultaneously when the UE utilizes UL resources to perform uplink transmission, the value range of N is 0 to N-1, and the value of N is sequentially increased according to the transmission sequence of UL resource scheduling information; the second UL resource scheduling parameter is a configuration parameter of a UL subframe corresponding to N among N UL subframes that the UE can simultaneously schedule.

And step 82, starting to compete for the channel access opportunity from the second subframe until the channel access opportunity is successfully contended, or the UL resource indicated by the UL resource scheduling information is invalid.

And step 83, when the UE successfully competes for the channel access opportunity, sequentially using the second UL resource scheduling parameters corresponding to N according to the sequence from small to large of N in each piece of received UL resource scheduling information, and performing uplink transmission on N UL subframes from the successful competition to the channel access opportunity.

Based on the same inventive concept, embodiments of the present invention further provide an uplink scheduling apparatus and device implemented by a network side and an uplink scheduling apparatus and device implemented by a terminal side and an uplink scheduling system, respectively, and because the principle of solving the problem of the apparatus, device and system is similar to the uplink scheduling method implemented by the network side and the uplink scheduling method implemented by the terminal side, the implementation of the apparatus, device and system can refer to the implementation of the method, and repeated parts are not described again.

As shown in fig. 9, a schematic structural diagram of a first uplink scheduling apparatus according to an embodiment of the present invention includes:

a UL resource scheduling information sending unit 91, configured to send uplink UL resource scheduling information to a user equipment UE in a first subframe, to indicate that the UE starts to contend for a channel access opportunity from a second subframe, and use a UL resource indicated by the UL resource scheduling information when successfully contending for the channel access opportunity; wherein a first time delay exists between the first subframe and the second subframe;

a UL resource scheduling information releasing unit 92, configured to release, when it is determined that the UE performs uplink transmission using the UL resource from the second subframe, or it is determined that the UL resource scheduling information is invalid, the UL resource indicated by the UL resource scheduling information.

The UL resource scheduling information releasing unit 92 is specifically configured to:

from the second subframe, performing blind detection on an UL resource indicated by the UL resource scheduling information to determine whether a demodulation reference signal transmitted by the UE exists; when the demodulation reference signal is detected to exist, determining that the UE utilizes the UL resource to carry out uplink transmission, and releasing the UL resource indicated by the UL resource scheduling information; or

From the second subframe, blind detecting whether transmission data of the UE exist on UL resources indicated by the UL resource scheduling information; when the transmission data is detected to exist, determining that the UE utilizes the UL resource to carry out uplink transmission, and releasing the UL resource indicated by the UL resource scheduling information; or

From the second subframe, performing blind detection on UL resources indicated by the UL resource scheduling information to determine whether a preamble part subframe sent by the UE exists; and when the preamble part subframe is detected to exist, determining that the UE utilizes the UL resource to carry out uplink transmission, and releasing the UL resource indicated by the UL resource scheduling information.

judging whether the UE utilizes the UL resources to carry out uplink transmission within a preset time period from a second subframe; when the UE is judged not to utilize the UL resources to carry out uplink transmission within a preset time period, determining that the UL resource scheduling information is invalid, and releasing the UL resources indicated by the UL resource scheduling information; the time period is from the second subframe to a third subframe, and a second time delay exists between the second subframe and the third subframe; or

Judging whether the base station sends resource failure information to the UE from a second subframe; when the base station is judged to send resource failure information to the UE, determining that the UL resource scheduling information is failed, and releasing the UL resource indicated by the UL resource scheduling information; or

Judging whether the base station sends new UL resource scheduling information to the UE from a second subframe; wherein the UL resource indicated by the new UL resource scheduling information is newly allocated to the UE by the base station; and when judging that the base station sends new UL resource scheduling information to the UE, determining that the UL resource scheduling information is invalid, and releasing the UL resource indicated by the UL resource scheduling information.

Wherein, the carrying mode of the UL resource scheduling information on the frequency domain is any one of the following modes:

carrying on the authorized frequency band of the base station;

carrying on an unlicensed frequency band in the same frequency band as the UL resources indicated by the UL resource scheduling information;

The UL resource scheduling information sending unit 91 is specifically configured to:

transmitting UL resource scheduling information to the UE in a first subframe; wherein the UL resource scheduling information includes: the total number N of schedulable subframes and a first UL resource scheduling parameter; the N represents that the UE can simultaneously schedule N UL subframes when utilizing the UL resources to carry out uplink transmission, wherein the N is an integer greater than or equal to 1; the first UL resource scheduling parameter is a configuration parameter of each UL subframe used when the UE performs uplink transmission using the UL resource.

sending at least one piece of UL resource scheduling information to UE, wherein the last piece of UL resource scheduling information in the at least one piece of UL resource scheduling information is sent in a first subframe; wherein, each piece of UL resource scheduling information includes: the scheduling sequence number N of the schedulable subframes, the second UL resource scheduling parameter and the total number N of the schedulable subframes; wherein, the N indicates that the UE can simultaneously schedule N UL subframes when using the UL resource for uplink transmission, and the N is an integer greater than or equal to 1; the N represents the sequence number of the currently scheduled UL sub-frame in N UL sub-frames which can be scheduled simultaneously when the UE utilizes the UL resources to perform uplink transmission, the value range of the N is from 0 to N-1, and the value of the N is sequentially increased according to the sending sequence of the UL resource scheduling information; the second UL resource scheduling parameter is a configuration parameter of an UL subframe corresponding to the N in N UL subframes that the UE can simultaneously schedule.

For convenience of description, the above parts are separately described as modules (or units) according to functional division. Of course, the functionality of the various modules (or units) may be implemented in the same or in multiple pieces of software or hardware in practicing the invention.

In a specific implementation, the first uplink scheduling apparatus may be disposed in a base station.

As shown in fig. 10, a schematic structural diagram of a second uplink scheduling apparatus according to an embodiment of the present invention includes:

a UL resource scheduling information receiving unit 101, configured to receive, in a first subframe, uplink UL resource scheduling information sent by a base station;

a contention unit 102, configured to start to contend for the channel access opportunity from the second subframe until the channel access opportunity is successfully contended or the UL resource indicated by the UL resource scheduling information is invalid; wherein a first time delay exists between the first subframe and the second subframe.

The competition unit 102 is specifically configured to:

when the channel access opportunity is contended from the second subframe, if the channel access opportunity is not contended successfully in a preset time period, determining that the UL resource scheduling information is invalid, and stopping contending for the channel access opportunity; the time period is from the second subframe to a third subframe, and a second time delay exists between the second subframe and the third subframe; or

When starting to compete for the channel access opportunity from a second subframe, if receiving resource failure information sent by the base station, determining that the UL resource scheduling information is failed, and stopping competing for the channel access opportunity; or

When starting to compete for the channel access opportunity from a second subframe, if receiving new UL resource scheduling information sent by the base station, determining that the UL resource scheduling information is invalid, and stopping competing for the channel access opportunity; wherein the UL resource indicated by the new UL resource scheduling information is reallocated for it by the base station.

Wherein the apparatus further comprises:

a transmitting unit 103, configured to perform uplink transmission by using the UL resource indicated by the UL resource scheduling information when a contention to the channel access opportunity is successful.

The UL resource scheduling information receiving unit 101 is specifically configured to:

receiving UL resource scheduling information sent by a base station in a first subframe; wherein the UL resource scheduling information includes: the total number N of schedulable subframes and a first UL resource scheduling parameter; the total number N of the schedulable subframes represents that the UE can simultaneously schedule N UL subframes when utilizing the UL resources to carry out uplink transmission, wherein N is an integer which is more than or equal to 1; the first UL resource scheduling parameter is a configuration parameter of each UL subframe used by the UE for uplink transmission by using the UL resource;

the transmission unit 103 is specifically configured to:

and when the successful competition reaches the channel access opportunity, performing uplink transmission on N UL subframes from the successful competition to the channel access opportunity according to the first UL resource scheduling parameter.

receiving at least one piece of UL resource scheduling information sent by the base station, wherein the last piece of UL resource scheduling information in the at least one piece of UL resource scheduling information is received in a first subframe; wherein, each piece of UL resource scheduling information includes: the scheduling sequence number N of the schedulable subframes, the second UL resource scheduling parameter and the total number N of the schedulable subframes; wherein, the N indicates that the UE can simultaneously schedule N UL subframes when using the UL resource for uplink transmission, and the N is an integer greater than or equal to 1; the N represents the sequence number of the currently scheduled UL sub-frame in N UL sub-frames which can be scheduled simultaneously when the UE utilizes the UL resources to perform uplink transmission, the value range of the N is from 0 to N-1, and the value of the N is sequentially increased according to the sending sequence of the UL resource scheduling information; the second UL resource scheduling parameter is a configuration parameter of an UL subframe corresponding to N among N UL subframes that the UE can simultaneously schedule;

the transmission unit is specifically configured to:

and when successful competition reaches the channel access opportunity, sequentially using second UL resource scheduling parameters corresponding to the N according to the sequence from small to large of the N in each piece of received UL resource scheduling information, and performing uplink transmission on N UL subframes from the successful competition to the channel access opportunity.

In a specific implementation, the second uplink scheduling apparatus may be disposed in a user equipment.

As shown in fig. 11, a schematic structural diagram of an uplink scheduling system provided in an embodiment of the present invention includes: base station 111 and user equipment 112, wherein:

the base station 111 is configured to send uplink UL resource scheduling information to a user equipment UE112 in a first subframe to instruct the UE112 to start contending for a channel access opportunity from a second subframe, and use UL resources indicated by the UL resource scheduling information when successfully contending for the channel access opportunity; wherein a first time delay exists between the first subframe and the second subframe; from the second subframe, when it is determined that the UE112 utilizes the UL resource for uplink transmission or that the UL resource scheduling information is invalid, releasing the UL resource indicated by the UL resource scheduling information;

the UE112 receives Uplink (UL) resource scheduling information sent by the base station 111 in a first subframe; and starting to compete for the channel access opportunity from the second subframe until the channel access opportunity is successfully contended or the UL resource indicated by the UL resource scheduling information is invalid.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An uplink scheduling method, comprising:

a base station sends Uplink (UL) resource scheduling information to User Equipment (UE) in a first subframe to indicate the UE to start to compete for a channel access opportunity from a second subframe, and the UL resource indicated by the UL resource scheduling information is used when the UE successfully competes for the channel access opportunity; wherein a first time delay exists between the first subframe and the second subframe;

from the second subframe, when the UE is judged to utilize the UL resource to carry out uplink transmission or the UL resource scheduling information is judged to be invalid, releasing the UL resource indicated by the UL resource scheduling information;

a base station sends at least one piece of UL resource scheduling information to UE, and the last piece of UL resource scheduling information in the at least one piece of UL resource scheduling information is sent in a first subframe; wherein, each piece of UL resource scheduling information includes: the scheduling sequence number N of the schedulable subframes, the second UL resource scheduling parameter and the total number N of the schedulable subframes; wherein, the N indicates that the UE can simultaneously schedule N UL subframes when using the UL resource for uplink transmission, and the N is an integer greater than or equal to 1; the N represents the sequence number of the currently scheduled UL sub-frame in N UL sub-frames which can be scheduled simultaneously when the UE utilizes the UL resources to perform uplink transmission, the value range of the N is from 0 to N-1, and the value of the N is sequentially increased according to the sending sequence of the UL resource scheduling information; the second UL resource scheduling parameter is a configuration parameter of an UL subframe corresponding to the N in N UL subframes that the UE can simultaneously schedule.

2. The method of claim 1, wherein from the second subframe, when it is determined that the UE utilizes the UL resource for uplink transmission, releasing the UL resource indicated by the UL resource scheduling information specifically includes:

3. The method of claim 1, wherein from the second subframe, when it is determined that the UL resource scheduling information is invalid, releasing the UL resource indicated by the UL resource scheduling information, specifically comprises:

4. The method of claim 1, wherein the UL resource scheduling information is carried in a frequency domain in any one of:

carrying on the authorized frequency band of the base station;

5. The method of claim 1, wherein the base station sending UL resource scheduling information to the UE in the first subframe specifically comprises:

the base station sends UL resource scheduling information to the UE in a first subframe; wherein the UL resource scheduling information includes: the total number N of schedulable subframes and a first UL resource scheduling parameter; the N represents that the UE can simultaneously schedule N UL subframes when utilizing the UL resources to carry out uplink transmission, wherein the N is an integer greater than or equal to 1; the first UL resource scheduling parameter is a configuration parameter of each UL subframe used when the UE performs uplink transmission using the UL resource.

6. An uplink scheduling method, comprising:

Starting to contend for the channel access opportunity from the second subframe until successfully contending for the channel access opportunity or the UL resource indicated by the UL resource scheduling information is invalid, including: when the UE starts to compete for the channel access opportunity from a second subframe, if the UE receives resource failure information sent by the base station, determining that the UL resource scheduling information is failed, and stopping competing for the channel access opportunity; or when the UE starts to compete for the channel access opportunity from a second subframe, if the UE receives new UL resource scheduling information sent by the base station, determining that the UL resource scheduling information is invalid, and stopping competing for the channel access opportunity; wherein the UL resource indicated by the new UL resource scheduling information is newly allocated to the UE by the base station;

wherein a first time delay exists between the first subframe and the second subframe.

7. The method of claim 6, wherein the method further comprises:

8. The method of claim 7, wherein the UE receives UL resource scheduling information sent by the base station in the first subframe, and specifically comprises:

the UE receives UL resource scheduling information sent by a base station in a first subframe; wherein the UL resource scheduling information includes: the total number N of schedulable subframes and a first UL resource scheduling parameter; the total number N of the schedulable subframes represents that the UE can simultaneously schedule N UL subframes when utilizing the UL resources to carry out uplink transmission, wherein N is an integer which is more than or equal to 1; the first UL resource scheduling parameter is a configuration parameter of each UL subframe used by the UE for uplink transmission by using the UL resource; then

When the UE successfully competes for the channel access opportunity, performing uplink transmission using the UL resource indicated by the UL resource scheduling information, which specifically includes:

9. The method of claim 7, wherein the UE receives UL resource scheduling information sent by the base station in the first subframe, and specifically comprises:

receiving at least one piece of UL resource scheduling information sent by the base station, wherein the last piece of UL resource scheduling information in the at least one piece of UL resource scheduling information is received in a first subframe; wherein, each piece of UL resource scheduling information includes: the scheduling sequence number N of the schedulable subframes, the second UL resource scheduling parameter and the total number N of the schedulable subframes; wherein, the N indicates that the UE can simultaneously schedule N UL subframes when using the UL resource for uplink transmission, and the N is an integer greater than or equal to 1; the N represents the sequence number of the currently scheduled UL sub-frame in N UL sub-frames which can be scheduled simultaneously when the UE utilizes the UL resources to perform uplink transmission, the value range of the N is from 0 to N-1, and the value of the N is sequentially increased according to the sending sequence of the UL resource scheduling information; the second UL resource scheduling parameter is a configuration parameter of an UL subframe corresponding to N among N UL subframes that the UE can simultaneously schedule; then

and when the UE successfully competes to the channel access opportunity, sequentially using second UL resource scheduling parameters corresponding to the N according to the sequence from small to large of the N in each piece of received UL resource scheduling information, and performing uplink transmission on N UL subframes from the successful competition to the channel access opportunity.

10. An uplink scheduling apparatus, comprising:

a UL resource scheduling information sending unit, configured to send uplink UL resource scheduling information to a user equipment UE in a first subframe, so as to indicate that the UE starts to contend for a channel access opportunity from a second subframe, and use a UL resource indicated by the UL resource scheduling information when successfully contending for the channel access opportunity; wherein a first time delay exists between the first subframe and the second subframe;

a UL resource scheduling information releasing unit, configured to release, when it is determined that the UE performs uplink transmission using the UL resource from the second subframe or it is determined that the UL resource scheduling information is invalid, the UL resource indicated by the UL resource scheduling information;

11. The apparatus of claim 10, wherein the UL resource scheduling information releasing unit is specifically configured to:

12. The apparatus of claim 10, wherein the UL resource scheduling information releasing unit is specifically configured to:

13. The apparatus of claim 10, wherein the UL resource scheduling information is carried in a frequency domain in any one of:

carrying on the authorized frequency band of the base station;

14. The apparatus of claim 10, wherein the UL resource scheduling information sending unit is specifically configured to:

15. An uplink scheduling apparatus, comprising:

a contention unit, configured to start to contend for the channel access opportunity from the second subframe until the channel access opportunity is successfully contended or the UL resource indicated by the UL resource scheduling information is invalid, including: when starting to compete for the channel access opportunity from a second subframe, if receiving resource failure information sent by the base station, determining that the UL resource scheduling information is failed, and stopping competing for the channel access opportunity; or when starting to compete for the channel access opportunity from the second subframe, if receiving new UL resource scheduling information sent by the base station, determining that the UL resource scheduling information is invalid, and stopping competing for the channel access opportunity; wherein the UL resource indicated by the new UL resource scheduling information is reallocated for it by the base station; wherein a first time delay exists between the first subframe and the second subframe.

16. The apparatus of claim 15, wherein the apparatus further comprises:

and a transmission unit, configured to perform uplink transmission by using the UL resource indicated by the UL resource scheduling information when a successful contention to the channel access opportunity occurs.

17. The apparatus of claim 16, wherein the UL resource scheduling information receiving unit is specifically configured to:

receiving UL resource scheduling information sent by a base station in a first subframe; wherein the UL resource scheduling information includes: the total number N of schedulable subframes and a first UL resource scheduling parameter; the total number N of the schedulable subframes represents that N UL subframes can be scheduled simultaneously when the UE utilizes the UL resources to carry out uplink transmission, wherein N is an integer which is more than or equal to 1; the first UL resource scheduling parameter is a configuration parameter of each UL subframe used by the UE for uplink transmission by using the UL resource;

the transmission unit is specifically configured to:

18. The apparatus of claim 16, wherein the UL resource scheduling information receiving unit is specifically configured to:

receiving at least one piece of UL resource scheduling information sent by the base station, wherein the last piece of UL resource scheduling information in the at least one piece of UL resource scheduling information is received in a first subframe; wherein, each piece of UL resource scheduling information includes: the scheduling sequence number N of the schedulable subframes, the second UL resource scheduling parameter and the total number N of the schedulable subframes; wherein, when the N indicates that the UE utilizes the UL resource for uplink transmission, N UL subframes may be scheduled simultaneously, where N is an integer greater than or equal to 1; the N represents the sequence number of the currently scheduled UL sub-frame in N UL sub-frames which can be scheduled simultaneously when the UE utilizes the UL resources to perform uplink transmission, the value range of the N is from 0 to N-1, and the value of the N is sequentially increased according to the sending sequence of the UL resource scheduling information; the second UL resource scheduling parameter is a configuration parameter of an UL subframe corresponding to N among N UL subframes that the UE can simultaneously schedule;

the transmission unit is specifically configured to:

19. A base station device, characterized by comprising the uplink scheduling apparatus according to any one of claims 10 to 14.

20. A user equipment, characterized in that it comprises the uplink scheduling device according to any of claims 15 to 18.

21. An uplink scheduling system, comprising: the base station according to claim 19 and the user equipment according to claim 20.