WO2016184365A1 - 上行调度方法、装置、设备和*** - Google Patents

上行调度方法、装置、设备和*** Download PDF

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Publication number
WO2016184365A1
WO2016184365A1 PCT/CN2016/082034 CN2016082034W WO2016184365A1 WO 2016184365 A1 WO2016184365 A1 WO 2016184365A1 CN 2016082034 W CN2016082034 W CN 2016082034W WO 2016184365 A1 WO2016184365 A1 WO 2016184365A1
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Prior art keywords
resource
scheduling information
subframe
resource scheduling
base station
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PCT/CN2016/082034
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English (en)
French (fr)
Inventor
柯颋
童辉
刘建军
沈晓冬
侯雪颖
王锐
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***通信集团公司
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Publication of WO2016184365A1 publication Critical patent/WO2016184365A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/21Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/002Transmission of channel access control information
    • H04W74/004Transmission of channel access control information in the uplink, i.e. towards network

Definitions

  • the present disclosure relates to the field of network communication technologies, and in particular, to an uplink scheduling method, apparatus, device, and system.
  • LTE Long Term Evolution
  • U-band unlicensed bands
  • LBT listen before talk
  • CCA Clear Channel Assessment
  • the licensed frequency band (L-band) can be used to assist the unlicensed frequency band for service transmission, and the reliability of the licensed frequency band is combined with the bandwidth resources of the unlicensed frequency band to ensure the service transmission. Improve system throughput while reliability.
  • the protocol in the related art requires carrier aggregation (CA) or dual connectivity to use the LTE technology in the unlicensed frequency band.
  • CA carrier aggregation
  • the carrier on the licensed band is used as the primary carrier
  • the carrier on the unlicensed band is used as the secondary carrier to implement the unlicensed band access mode assisted by the licensed band, that is, the licensed access (Licensed Assisted Access, LAA).
  • the UE When the user equipment (User Equipment, UE) is allowed to transmit uplink data on the 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 opportunity transmission, and That is to say, after the UE is scheduled, the UE does not necessarily compete for channel access opportunities every time.
  • the user equipment User Equipment, UE
  • the uplink transmission of the UE on the U-band is an opportunity transmission, and That is to say, after the UE is scheduled, the UE does not necessarily compete for channel access opportunities every time.
  • the UL resource of the UE is allocated in advance by an evolved Node B (eNB).
  • eNB evolved Node B
  • the eNB sends the UL resource scheduling information to the UE (for example, at the subframe n)
  • Competing for channel access opportunities If the UE fails to successfully contend for the channel access opportunity at subframe n+k, the UL resource scheduling information transmitted at subframe n will be invalidated due to the failure, which will result in unnecessary scheduling signaling overhead. This will result in waste of UL resources allocated by the eNB for the UE.
  • the eNB needs to continuously allocate UL resources to the UE, and send UL resource scheduling information in the Physical Downlink Control Channel (PDCCH) for the eNB. In other words, it will cause a large scheduling signaling overhead and waste of scheduling signaling.
  • PDCCH Physical Downlink Control Channel
  • the embodiments of the present disclosure provide an uplink scheduling method, apparatus, device, and system, which may be used to solve the problem that an uplink scheduling mechanism of a communication system (such as an LTE system) in an unlicensed frequency band may cause a large network side. Scheduling signaling overhead and scheduling signaling waste.
  • a communication system such as an LTE system
  • the first aspect provides an uplink scheduling method, including:
  • the UL resource indicated by the UL resource scheduling information is released.
  • the UL resource indicated by the UL resource scheduling information is released when the UE is determined to use the UL resource to perform uplink transmission, and the method includes:
  • blind detection on the UL resource indicated by the UL resource scheduling information is Whether there is a demodulation reference signal sent by the UE; when it is detected that the demodulation reference signal is present, determining that the UE performs uplink transmission by using the UL resource, and releasing the UL resource indicated by the UL resource scheduling information ;or
  • the releasing, by the second subframe, the UL resource indicated by the UL resource scheduling information when the UL resource scheduling information is invalid specifically includes:
  • the bearer mode of the UL resource scheduling information in the frequency domain is any one of the following manners:
  • the bearer is carried on other unlicensed frequency bands that are different from the UL resource indicated by the UL resource scheduling information.
  • the sending, by the base station, the UL resource scheduling information to the UE in the first subframe specifically includes:
  • the base station sends the UL resource scheduling information to the UE in the first subframe, where the UL resource scheduling information includes: a total number N of schedulable subframes and a first UL resource scheduling parameter; the N characterizes that the UE is utilizing When the UL resource performs uplink transmission, the N UL subframes may be scheduled at the same time, where the N is an integer greater than or equal to 1; the first UL resource scheduling parameter is used by the UE to perform uplink transmission by using the UL resource. Configuration parameters for each UL subframe used.
  • the sending, by the base station, the UL resource scheduling information to the UE in the first subframe specifically includes:
  • the base station sends at least one piece of UL resource scheduling information to the UE, and the last piece of the UL resource scheduling information in the at least one piece of the UL resource scheduling information is sent in the first subframe, where each UL resource scheduling information includes: The subframe sequence number n, the second UL resource scheduling parameter, and the total number of schedulable subframes N; wherein the N characterizes that the UE can simultaneously schedule N UL subframes when performing uplink transmission by using the UL resource
  • the N is an integer greater than or equal to 1;
  • the n characterizes an arrangement sequence number of the currently scheduled UL subframe in the N UL subframes that can be simultaneously scheduled when the UE performs uplink transmission by using the UL resource,
  • the value of n is in the range of 0 to N-1, and the value of the n is sequentially incremented according to the sending order of the UL resource scheduling information;
  • the second UL resource scheduling parameter is that the UE can be simultaneously scheduled.
  • the second aspect provides an uplink scheduling method, including:
  • the user equipment UE receives uplink UL resource scheduling information sent by the base station in the first subframe;
  • the contending for the channel access opportunity from the second subframe until the UL resource indicated by the UL resource scheduling information is invalid specifically includes:
  • the competition is stopped.
  • Channel access opportunity wherein the time period is the second subframe to the third subframe a second delay between the second subframe and the third subframe; or
  • the UE When the UE starts to contend for a channel access opportunity from the second subframe, if the UE receives the resource failure information sent by the base station, determining that the UL resource scheduling information is invalid, and stopping the contention channel access opportunity; or
  • the UE When the UE starts to contend for the channel access opportunity from the second subframe, if the UE receives the new UL resource scheduling information sent by the base station, it determines that the UL resource scheduling information is invalid, and stops the contention channel connection. An entry opportunity, where the UL resource indicated by the new UL resource scheduling information is that the base station re-allocates the UE.
  • the method further includes:
  • uplink transmission is performed by using the UL resource indicated by the UL resource scheduling information.
  • the receiving, by the UE, the UL resource scheduling information sent by the base station in the first subframe specifically includes:
  • the UE receives the UL resource scheduling information that is sent by the base station in the first subframe, where the UL resource scheduling information includes: a total number of schedulable subframes N and a first UL resource scheduling parameter; the total number of the schedulable subframes
  • the number N indicates that the UE may simultaneously schedule N UL subframes when the uplink resource is transmitted by using the UL resource, where the N is an integer greater than or equal to 1; the first UL resource scheduling parameter is used by the UE. a configuration parameter of each UL subframe used when the UL resource performs uplink transmission;
  • the uplink resource is transmitted by using the UL resource indicated by the UL resource scheduling information, and specifically includes:
  • the uplink transmission is performed on the N UL subframes from the time of successful competition to the channel access opportunity according to the first UL resource scheduling parameter.
  • the receiving, by the UE, the UL resource scheduling information sent by the base station in the first subframe specifically includes:
  • each of the UL resource scheduling information includes: The N-arrangement sequence number n, the second UL resource scheduling parameter, and the total number of schedulable subframes N; wherein the N characterizes that the UE can simultaneously schedule N ULs when performing uplink transmission by using the UL resource In the subframe, the N is an integer greater than or equal to 1; the n characterizes the arrangement of the currently scheduled UL subframe in the N UL subframes that can be simultaneously scheduled when the UE performs uplink transmission by using the UL resource.
  • the values of the UL subframe scheduling information are sequentially incremented according to the sending order of the UL resource scheduling information.
  • the second UL resource scheduling parameter is configured for the UL subframe corresponding to the n in the N UL subframes that the UE can simultaneously schedule. Parameter;
  • the uplink resource is transmitted by using the UL resource indicated by the UL resource scheduling information, and specifically includes:
  • the second UL resource scheduling parameter corresponding to the n is sequentially used according to the sequence of n from small to large in each received UL resource scheduling information, in the slave Successfully compete for uplink transmission on N UL subframes from the channel access opportunity.
  • the 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 user equipment UE in the first subframe, to indicate that the UE starts to compete for channel access opportunities from the second subframe, and successfully competes to The UL resource indicated by the UL resource scheduling information is used when the channel access opportunity is used; wherein, the first time delay exists between the first subframe and the second subframe;
  • a UL resource scheduling information release unit configured to release the UL resource when the UE is determined to use the UL resource for uplink transmission or the UL resource scheduling information is invalid from the second subframe The UL resource indicated by the scheduling information.
  • the UL resource scheduling information release unit is specifically configured to:
  • the UL resource scheduling information release unit is specifically configured to:
  • the bearer mode of the UL resource scheduling information in the frequency domain is any one of the following manners:
  • the bearer is carried on other unlicensed frequency bands that are different from the UL resource indicated by the UL resource scheduling information.
  • the UL resource scheduling information sending unit is specifically configured to:
  • the UL resource scheduling information includes: a total number N of schedulable subframes and a first UL resource scheduling parameter;
  • the N UL subframes may be scheduled at the same time, where the N is an integer greater than or equal to 1;
  • the first UL resource scheduling parameter is used by the UE to perform uplink transmission by using the UL resource. Configuration parameters for each UL subframe.
  • the UL resource scheduling information sending unit is specifically configured to:
  • each UL resource scheduling information includes: a schedulable sub Frame arrangement sequence number n, second UL resource scheduling parameters, and schedulable subframes a total number N; wherein the N characterizes that the UE may simultaneously schedule N UL subframes when the uplink resource is transmitted by using the UL resource, where N is an integer greater than or equal to 1;
  • the sequence number of the currently scheduled UL subframe in the N UL subframes that can be simultaneously scheduled the range of n ranges from 0 to N-1, and the The value of n is sequentially incremented according to the sending order of the UL resource scheduling information;
  • the second UL resource scheduling parameter is the N UL subframes that can be simultaneously scheduled by the UE, and the corresponding UL subframe of the n Configuration
  • the fourth aspect provides an uplink scheduling apparatus, including:
  • a UL resource scheduling information receiving unit configured to receive uplink UL resource scheduling information sent by the base station in the first subframe
  • a competing unit configured to contend for a channel access opportunity from the second subframe until the UE successfully accesses the channel access opportunity or the UL resource failure indicated by the UL resource scheduling information; wherein the first subframe and the There is a first delay between the second subframes.
  • the competition unit is specifically configured to:
  • the channel access opportunity When the channel access opportunity is contending from the second subframe, if the channel access opportunity is not successfully contending in the preset time period, it is determined that the UL resource scheduling information is invalid, and the contention channel access opportunity is stopped;
  • the time period is the second subframe to the third subframe, and the second subframe has a second delay between the second subframe and the third subframe; or
  • the contention channel access opportunity is started from the second subframe, if the resource failure information sent by the base station is received, it is determined that the UL resource scheduling information is invalid, and the contention channel access opportunity is stopped; or
  • the new UL resource scheduling information sent by the base station is received, it is determined that the UL resource scheduling information is invalid, and the contention channel access opportunity is stopped; The UL resource indicated by the new UL resource scheduling information is re-allocated by the base station.
  • the device further comprises:
  • a transmitting unit configured to perform uplink transmission by using the UL resource indicated by the UL resource scheduling information when successfully competing for a channel access opportunity.
  • the UL resource scheduling information receiving unit is specifically configured to:
  • the UL resource scheduling information includes: a total number of schedulable subframes N and a first UL resource scheduling parameter; the total number of the schedulable subframes N indicates that the UE can simultaneously schedule N when performing uplink transmission by using the UL resources.
  • a UL subframe 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 by the UE to perform uplink transmission by using the UL resource;
  • the transmission unit is specifically configured to:
  • the uplink transmission is performed on the N UL subframes from the time of successful competition to the channel access opportunity according to the first UL resource scheduling parameter.
  • the UL resource scheduling information receiving unit is specifically configured to:
  • each of the UL resource scheduling information includes: The N-arrangement sequence number n, the second UL resource scheduling parameter, and the total number of schedulable subframes N; wherein the N characterizes that the UE can simultaneously schedule N ULs when performing uplink transmission by using the UL resource In the subframe, the N is an integer greater than or equal to 1; the n characterizes the arrangement of the currently scheduled UL subframe in the N UL subframes that can be simultaneously scheduled when the UE performs uplink transmission by using the UL resource.
  • the value of the n is in the range of 0 to N-1, and the value of the n is sequentially incremented according to the sending order of the UL resource scheduling information;
  • the second UL resource scheduling parameter is The configuration parameters of the UL subframe corresponding to the n in the N UL subframes that are simultaneously scheduled;
  • the transmission unit is specifically configured to:
  • the second UL resource scheduling parameter corresponding to the n is sequentially used according to the sequence of n from small to large in each received UL resource scheduling information, from successful competition to Uplink transmission is performed on N UL subframes from the channel access opportunity.
  • a fifth aspect provides a base station device, comprising the uplink scheduling apparatus according to any one of the foregoing third aspects.
  • a sixth aspect provides a user equipment, including the uplink scheduling apparatus of any of the fourth aspects.
  • the seventh aspect provides an uplink scheduling system, including: the foregoing base station and the foregoing user equipment.
  • the base station sends UL resource scheduling information to the UE in the first subframe to instruct the UE to start competing for channel access opportunities from the second subframe, and successfully compete for channel access opportunities. And using the UL resource indicated by the UL resource scheduling information, and determining, from the second subframe, whether the UE uses the UL resource for uplink transmission, or determining whether the UL resource scheduling information is invalid, and determining that the UE uses the UL resource to perform uplink When the transmission or the foregoing UL resource scheduling information is invalid, the UL resource indicated by the UL resource scheduling information is released.
  • the base station reserves the UL resource indicated by the UL resource scheduling information for the UE from the second subframe until the UE uses the UL resource for uplink transmission or the UL resource scheduling information fails, and the above-mentioned “reservation” It is not said that the base station can no longer schedule other UEs on the reserved UL resources, but the base station can guarantee that the UE is on the reserved UL resources once it contends for the channel access opportunity from the second subframe.
  • the uplink scheduling mechanism proposed in the present disclosure can save the base station a large amount of scheduling signaling overhead without causing waste of scheduling signaling.
  • FIG. 1 is a flowchart of implementing an uplink scheduling method implemented by a network side according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of implementing an uplink scheduling method implemented by a terminal side according to an embodiment of the present disclosure
  • 3 is a schematic diagram of single subframe scheduling
  • FIG. 4 is a flowchart of implementing another uplink scheduling method implemented by a network side according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of multi-subframe scheduling
  • FIG. 6 is a flowchart of implementing another uplink scheduling method implemented by a network side according to an embodiment of the present disclosure
  • FIG. 7 is a flowchart of an implementation of an uplink scheduling method implemented by a terminal side according to an embodiment of the present disclosure
  • FIG. 8 is a flowchart of an implementation of an uplink scheduling method implemented by a terminal side according to an embodiment of the present disclosure
  • FIG. 9 is a schematic structural diagram of a first uplink scheduling apparatus according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a second uplink scheduling apparatus according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of an uplink scheduling system according to an embodiment of the present disclosure.
  • the uplink scheduling mechanism in the related art is studied in detail.
  • the uplink scheduling process of the LTE in the related art is as follows:
  • the eNB centrally allocates UL resources for all served UEs
  • the eNB notifies the relevant UE to the UL resource scheduling information through the PDCCH;
  • DCI Downlink Control Information
  • the DCI format carrying the UL resource scheduling information is DCI format 0 or DCI format 4;
  • Resource block assignment and hopping resource allocation used to indicate frequency domain location information of the UL resource
  • DCI format 0/4 There are many other fields in DCI format 0/4, some of which include:
  • Modulation and coding scheme and redundancy version used to indicate modulation, coding mode, and redundant retransmission version information
  • a TPC command for scheduled PUSCH configured to indicate transmission power control information
  • the field (2bit) exists only when the uplink and downlink subframe matching mode in the Time Division Duplexing (TDD) system is 0, and is used to support scheduling of more than one UL subframe.
  • TDD Time Division Duplexing
  • the time domain subframe position of the UL resource indicated by the UL resource scheduling information is determined by an implicit rule, where:
  • the UE When the eNB is a Frequency Division Duplexing (FDD) system, it is assumed that the UE receives the DCI or the retransmission indication at the subframe n, and the UE implements the corresponding physical uplink shared channel at the subframe n+4 (Physical). Uplink Shared Channel, PUSCH) transmission;
  • FDD Frequency Division Duplexing
  • the eNB 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 the UL resource scheduling information is carried in the DCI format 4, only one DL subframe is scheduled.
  • the UL resource and assuming that the UE receives the DCI or the retransmission indication at the subframe n, the UE performs the corresponding PUSCH transmission at the subframe n+k, where the value of k is related to the uplink and downlink subframe ratio mode of the TDD. For the specific value of k, see Table 1 below.
  • the eNB When the eNB is a TDD system and the uplink and downlink subframe matching mode is exactly equal to 0, and when the UL resource scheduling information is carried in the DCI Format 0, one DL subframe is allowed to schedule at most two ULs. Subframe. Which subframes are specifically scheduled is determined by the field UL index in DCI Format 0.
  • MSB Most Significant Bit
  • LSB Least Significant Bit
  • the UE transmits the PUSCH in the subframe n+7; when the MSB and the LSB of the UL index are both 1, the designated UE simultaneously transmits the PUSCH on the subframe n+k and the subframe n+7;
  • the eNB centrally allocates UL resources to all served UEs, and the eNB notifies the related UEs by using the PDCCH, and the allocated UL resources are allocated by the eNB.
  • the frequency domain location information is explicitly carried in the DCI format, and the time domain subframe position of the UL resource is determined by an implicit rule, and the time domain subframe position (n+k) and DCI of the allocated UL resource are located.
  • the embodiment of the present disclosure improves the uplink scheduling scheme.
  • the base station sends UL resource scheduling information to the UE in the first subframe to instruct the UE to start competing channel access opportunities from the second subframe, and uses the UL resource scheduling information when successfully competing for the channel access opportunity. Determining, by the second subframe, whether the UE uses the UL resource for uplink transmission, or determining whether the UL resource scheduling information is invalid, and determining that the UE uses the UL resource for uplink transmission, or determining the foregoing When the UL resource scheduling information fails, the UL resource indicated by the UL resource scheduling information is released.
  • the base station reserves the UL resource indicated by the UL resource scheduling information for the UE from the second subframe until the UE uses the UL resource for uplink transmission or the UL resource scheduling information fails, so that the base station can save a large number of scheduling signals.
  • the overhead is not lost in scheduling signaling.
  • the uplink scheduling method, the device, the device, and the system provided by the embodiments of the present disclosure may be applied to an application scenario of an unlicensed frequency band as a typical application scenario, or may be applied to an application scenario of a licensed frequency band, that is, The uplink scheduling method proposed by the embodiment of the present disclosure,
  • the application scenarios of devices, devices, and systems are not limited by the application scenarios of unlicensed bands.
  • the embodiment of the present disclosure 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 instruct the UE to start competing channel access opportunities from the second subframe, and uses the UL resource scheduling information when successfully competing for the channel access opportunity.
  • the indicated UL resource wherein there is a first time delay between the first subframe and the second subframe.
  • the first delay existing between the first subframe and the second subframe may be, but not limited to, a subframe, or may be orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol is a unit.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the base station When the first time delay is in a subframe, for example, the base station sends the UL resource scheduling information to the UE in the subframe n, the UE starts to contend for the channel access opportunity from the subframe n+k, and successfully competes for the channel connection.
  • the UL resource indicated by the UL resource scheduling information is used when entering the opportunity, where k is the first delay.
  • the time domain subframe position of the UL resource indicated by the UL resource scheduling information is no longer determined by an implicit rule set in advance, that is, The time domain subframe position of the UL resource indicated by the UL resource scheduling information does not have an explicit time interval relationship with the subframe where the base station transmits the UL resource scheduling information, but the base station reserves the UE for the UE from the second subframe.
  • UL resource indicated by the UL resource scheduling information 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 no longer determined by an implicit rule set in advance, that is, The time domain subframe position of the UL resource indicated by the UL resource scheduling information does not have an explicit time interval relationship with the subframe where the base station transmits the UL resource scheduling information, but the base station reserves the UE for the UE from the second subframe. UL resource indicated by the UL resource scheduling information.
  • the above-mentioned “reservation” does not mean that the base station can no longer schedule other UEs on the reserved UL resources, but that the UE starts to compete for channel access from the second subframe. Opportunity, the base station can guarantee that the UE obtains the service on the reserved UL resources.
  • the base station can reserve the same UL resource for multiple different UEs through scheduling technology.
  • the bearer manner of the UL resource scheduling information sent by the base station to the UE in the frequency domain may be, but is not limited to, any one of the following manners:
  • the bearer is carried over other unlicensed frequency bands of different frequency bands than the UL resources indicated by the UL resource scheduling information, that is, cross-carrier scheduling.
  • Step 12 From the second subframe, when it is determined that the UE uses the UL resource indicated by the UL resource scheduling information to perform uplink transmission, or determines that the UL resource scheduling information fails, the UL resource indicated by the UL resource scheduling information is released.
  • the base station reserves the UL resource indicated by the UL resource scheduling information for the UE from the second subframe, it cannot be reserved without limitation, because if the UE fails to successfully compete for the channel access opportunity, it is pre- The retained UL resources will remain idle, resulting in a waste of UL resources.
  • the base station determines, from the second subframe, 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, and determines that the UE uses the UL resource scheduling information to indicate When the UL resource performs uplink transmission, or determines that the UL resource scheduling information fails, the UL resource indicated by the UL resource scheduling information is released.
  • the UL resource indicated by the UL resource scheduling information is released when the UL resource scheduling information is determined to be invalid from the second subframe, and may be, but is not limited to, determined as follows:
  • the preset time period is a second subframe to a third subframe, and a second delay exists between the second subframe and the third subframe.
  • the second 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.
  • the second delay is in units of subframes, for example, the second subframe is a subframe n+k, and the third subframe is n+k+1, and the second subframe and the third subframe are between
  • the second delay is l, l may be preset, which may be a fixed value, such as 4 or 10. It may also be explicitly indicated to the UE by adding a field in the DCI.
  • the base station When it is determined that the base station sends the resource failure information to the UE, it is determined that the UL resource scheduling information is invalid, and the UL resource indicated by the UL resource scheduling information is released.
  • the eNB may notify the UE that the UL resource allocated by the UE is invalidated by some dedicated signaling.
  • a new DCI may be designed to carry the resource failure information; or a new field (such as a UL resource failure flag) may be added to the DCI in the related art to carry the resource failure information; or the resource failure information. It can also be sent to the UE along with the Hybrid Automatic Repeat reQuest (HARQ) feedback information.
  • HARQ Hybrid Automatic Repeat reQuest
  • the base station When it is determined that the base station sends new UL resource scheduling information to the UE, it is determined that the UL resource scheduling information is invalid, and the UL resource indicated by the UL resource scheduling information is released.
  • the time domain subframe position of the UL resource indicated by the UL resource scheduling information does not have a clear time with the subframe where the base station transmits the UL resource scheduling information.
  • the interval relationship is such that the base station only needs to demodulate the uplink data of the UE in the determined time domain subframe position.
  • 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, so the base station needs to be always
  • the UL resource reserved by the UE monitors when the UE obtains the channel access opportunity, that is, the base station needs to determine whether the UE uses the UL resource for uplink transmission from the second subframe.
  • the UL resource indicated by the UL resource scheduling information is released, which may be, but is not limited to, implemented in the following manners:
  • DM RS De Modulation Reference Signal
  • the UE When it is detected that the demodulation reference signal exists, it is determined that the UE performs uplink transmission by using the UL resource, and releases 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 contend for the channel access opportunity by detecting the presence of the DM RS in the UL resource reserved for the UE.
  • the DM RS symbol may start on the second or third OFDM symbol, so this method has hysteresis.
  • the eNB In order to avoid missed detection, for each possible UL subframe, the eNB needs to buffer at least the first few OFDM symbols until the existence decision of the DM RS is completed.
  • the DM RS is cell-specific and is easy for the eNB to perform signal detection. The reason is that, considering the scenario in which multiple UEs share UL frequency domain resources by frequency division multiplexing, the eNB does not need to configure different matching sequences for each UE, and only needs to configure one same cell specified sequence to be able to be in all frequency bands. The presence detection of the DM RS is completed.
  • the eNB detects the DM RS on the UL resource reserved for a certain UE, determines that the UE successfully contends for the channel access opportunity, and uses the UL resource for uplink transmission; otherwise, determines that the UE does not successfully compete for the channel. Access opportunities.
  • the UE When it is detected that the transmission data exists, it is determined that the UE performs uplink transmission by using the UL resource, and releases the UL resource indicated by the UL resource scheduling information.
  • the eNB attempts to resolve the scheduled UL resources at each possible UL subframe. If the correct demodulation is possible, it is determined that the UE successfully contends for the channel access opportunity; otherwise, it is determined that the UE does not successfully compete for the channel access opportunity.
  • the transmission data of the UE is scrambled by the UE-specific sequence, the blind detection complexity is higher than that of the first method.
  • the UE When it is detected that there is a preamble partial subframe, it is determined that the UE performs uplink transmission by using the UL resource, and releases the UL resource indicated by the UL resource scheduling information.
  • the UE successfully contends for the channel access opportunity, the UE first sends the preamble portion to occupy the channel, and after the boundary of the next subframe of the L-band is reached, the uplink data is actually sent.
  • the partial information (such as a partial OFDM symbol) of the preamble partial subframe transmitted by the UE is UE specified. Therefore, the eNB can determine whether the UE successfully contends for the channel access opportunity by detecting the preamble partial subframe sent by the UE.
  • the base station sends UL resource scheduling information to the UE in the first subframe to instruct the UE to start competing channel access opportunities from the second subframe, and uses the UL resource when successfully competing for the channel access opportunity. Scheduling the UL resource indicated by the information, and determining, from the second subframe, whether the UE uses the UL resource for uplink transmission, or determining whether the UL resource scheduling information is invalid, and determining whether the UE uses the UL resource for uplink transmission, or determining When the foregoing UL resource scheduling information fails, the UL resource indicated by the UL resource scheduling information is released.
  • the base station reserves the UL resource indicated by the UL resource scheduling information for the UE from the second subframe until the UE uses the UL resource for uplink transmission or the UL resource scheduling information fails, so that the base station can save a large number of scheduling signals.
  • the overhead is not lost in scheduling signaling.
  • the embodiment of the present disclosure further provides an uplink scheduling method implemented by the terminal side. As shown in FIG. 2, the method includes the following steps:
  • Step 21 The UE receives uplink UL resource scheduling information sent by the base station in the first subframe.
  • Step 22 contend for the channel access opportunity from the second subframe until the channel access opportunity is successfully contending, or the UL resource indicated by the UL resource scheduling information is invalid; wherein, the first subframe and the second subframe There is a first delay between.
  • starting the contention channel access opportunity from the second subframe until the UL resource failure indicated by the UL resource scheduling information may be, but is not limited to, implemented as follows:
  • the UE When the UE contends for the channel access opportunity from the second subframe, if the UE does not successfully compete for the channel access opportunity within the preset time period, it determines that the UL resource scheduling information is invalid, and stops the contention channel access opportunity; , the preset time period is the second subframe to the third subframe, and the second There is a second delay between the subframe and the third subframe;
  • the UE When the UE starts to contend for the channel access opportunity from the second subframe, if the UE receives the resource failure information sent by the base station, it determines that the UL resource scheduling information is invalid, and stops the contention channel access opportunity;
  • the UE When the UE starts to contend for the channel access opportunity from the second subframe, if the UE receives the new UL resource scheduling information sent by the base station, determines that the UL resource scheduling information is invalid, and stops the contention channel access opportunity; wherein, the new UL The UL resource indicated by the resource scheduling information is that the base station re-allocates for the UE.
  • the UE performs the LBT mechanism to contend for the channel access opportunity. After the UE successfully contends for the channel access opportunity, the UE performs uplink on the UL resource (mainly referred to as the frequency domain resource) indicated by the UL resource scheduling information. transmission.
  • the UL resource mainly referred to as the frequency domain resource
  • the uplink resource is generally implemented on the UL resource (mainly referred to as the frequency domain resource) indicated by the UL resource scheduling information.
  • a DL subframe can only schedule one UL subframe, which means that after the UE completes uplink transmission of one subframe, the frequency domain resource is released and re-allocated by the base station to the next UE for use. Then, when a UE has multiple UL subframes to transmit at the same time, the uplink scheduling process described above causes a large time domain interval between adjacent two schedulings, resulting in low transmission efficiency.
  • FIG. 3 it is a schematic diagram of single subframe scheduling.
  • UE1 was successful channel access opportunities to compete at the time m 1.
  • eNB Since there are a large UE1 UL data to be transmitted, eNB at n 2 second time allocated UL resources for UE1. Obviously, n 2 >m 1 . M 2 at the time UE1 successfully compete for the channel access opportunities. Since UL signaling requires at least k subframes from issue to entry, m 2 -n 2 ⁇ k. Therefore, the UE needs to wait at least between the last transmission opportunities: m 2 -m 1 ⁇ k+n 2 -m 1 >k+1. That is, each time the UE transmits one UL subframe, at least k+1 subframes need to be waited in the middle, so the maximum transmission efficiency of the UE is ⁇ 1/(k+1).
  • the UE does not necessarily compete for channel access opportunities every time, so there will be a longer waiting time between the two UL transmissions. That is, the actual UE transmission efficiency will be much lower than 1/(k+1).
  • the uplink scheduling procedure in the related art will result in lower UE UL transmission efficiency.
  • the embodiment of the present disclosure improves the foregoing uplink scheduling procedure, so that when the UE successfully competes for a channel access opportunity, multiple UL subframes can be simultaneously transmitted.
  • FIG. 4 is a flowchart of an implementation of an uplink scheduling method implemented by a network side according to an embodiment of the present disclosure, which specifically includes the following steps:
  • Step 41 The base station sends UL resource scheduling information to the UE in the first subframe to instruct the UE to start competing channel access opportunities from the second subframe, and uses the UL resource scheduling information to indicate when successfully competing for the channel access opportunity.
  • the UL resource scheduling information includes: a total number of schedulable subframes N and a first UL resource scheduling parameter, where the N characterizes that the UE can simultaneously schedule N UL subframes when performing uplink transmission by using the UL resource.
  • 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 by using the UL resource.
  • the base station configures the same scheduling parameter for each UL subframe used by the UE to perform uplink transmission by using the UL resource.
  • TXOP transmission opportunity
  • Step 42 From the second subframe, when it is determined that the UE uses the UL resource for uplink transmission, or determines that the UL resource scheduling information fails, the UL resource indicated by the UL resource scheduling information is released.
  • FIG. 5 it is a schematic diagram of multi-subframe scheduling implemented according to the foregoing embodiment.
  • the eNB successfully compete for the UE to confirm the channel access opportunity time m 1, thus releasing the corresponding UL resource m 1 time.
  • the eNB may start to allocate the UE at the second subframe (m 1 +1, ie, n 2 ) after confirming the channel access opportunity that the UE successfully contends last time.
  • One UL resource Ideally, the UE re-competes to the channel access opportunity at time m 2 after the last UL transmission ends, and then starts a new UL transmission immediately. That is, in the UL multi-subframe transmission mode, UL scheduling does not become a bottleneck limiting UL transmission efficiency.
  • FIG. 6 is a flowchart of an implementation of an uplink scheduling method implemented by a network side according to an embodiment of the present disclosure, which 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 contend for the channel from the second subframe.
  • each UL resource scheduling information includes: a schedulable subframe sequence number n, and a second UL resource scheduling parameter And a total number N of schedulable subframes, where N indicates that the UE can simultaneously schedule N UL subframes when the uplink resource is transmitted by using the UL resource, where N is an integer greater than or equal to 1; n indicates that the UE is uplinking by using the UL resource.
  • n ranges from 0 to N-1, and the value of n is sent according to the UL resource scheduling information.
  • the sequence is sequentially incremented; the second UL resource scheduling parameter is a configuration parameter of the UL subframe corresponding to n in the N UL subframes that the UE can simultaneously schedule.
  • the base station configures different scheduling parameters for each UL subframe used by the UE to perform uplink transmission by using the UL resource.
  • Step 62 From the second subframe, when it is determined that the UE performs uplink transmission by using the UL resource, or determines that the UL resource scheduling information is invalid, the UL resource indicated by the UL resource scheduling information is released.
  • the function of the UL index field in the DCI format 0 of the related art overlaps with the function of the embodiment of the present disclosure.
  • the field UL index is not needed, so the UL index field in DCI format 0 can be canceled, and the saved number of bits can be used for other purposes.
  • the UL index field in the related art may be multiplexed to indicate multi-subframe scheduling information to reduce DCI overhead caused by the multi-subframe scheduling mode.
  • the embodiment of the present disclosure further provides another uplink scheduling method implemented by the terminal side. As shown in FIG. 7, the method includes the following steps:
  • Step 71 The UE receives the UL resource scheduling information sent by the base station in the first subframe, where the UL resource scheduling information includes: a total number N of schedulable subframes and a first UL resource scheduling parameter; and N indicates that the UE is using the UL resource.
  • the UL resource scheduling information includes: a total number N of schedulable subframes and a first UL resource scheduling parameter; and N indicates that the UE is using the UL resource.
  • N UL subframes may be scheduled at the same time, 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 by the UE to perform uplink transmission by using the UL resource.
  • Step 72 Start a contention channel access opportunity from the second subframe until the channel access opportunity is successfully contending, or the UL resource indicated by the UL resource scheduling information is invalid.
  • Step 73 When the UE successfully contends for the channel access opportunity, perform uplink transmission on the 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 disclosure further provides another uplink scheduling method implemented by the terminal side, as shown in FIG. 8 , including the following steps:
  • Step 81 Receive at least one piece of UL resource scheduling information sent by the base station, and the last piece of the UL resource scheduling information in the at least one piece of the UL resource scheduling information is received in the first subframe, where each UL resource scheduling information includes: The scheduling subframe sequence number n, the second UL resource scheduling parameter, and the total number of schedulable subframes N; wherein, the N characterizes that the UE can simultaneously schedule N UL subframes when the uplink resource is transmitted by using the UL resource, where N is greater than or equal to An integer of 1; n characterizes the sequence number of the currently scheduled UL subframe in the N UL subframes that can be simultaneously scheduled when the UE performs uplink transmission by using the UL resource, where n ranges from 0 to N-1, and The value of n is sequentially incremented according to the order in which the UL resource scheduling information is sent.
  • the second UL resource scheduling parameter is a configuration parameter of the UL subframe corresponding to n in the N
  • Step 82 Start a contention channel access opportunity from the second subframe until the channel access opportunity is successfully contending, or the UL resource indicated by the UL resource scheduling information is invalid.
  • Step 83 When the UE successfully contends to the channel access opportunity, according to each UL resource received In the order of n from small to large in the source scheduling information, the second UL resource scheduling parameter corresponding to n is sequentially used, and the uplink transmission is performed on N UL subframes from the successful contention to the channel access opportunity.
  • an embodiment of the present disclosure further provides an uplink scheduling apparatus, a device, and an uplink scheduling apparatus, an apparatus, and an uplink scheduling system implemented by a terminal side, where the foregoing apparatus, device, and system solve the problem.
  • the principle is similar to the uplink scheduling method implemented on the network side and the uplink scheduling method implemented on the terminal side. Therefore, the implementation of the foregoing devices, devices, and systems can be referred to the implementation of the method, and the repeated description is not repeated.
  • FIG. 9 is a schematic structural diagram of a first uplink scheduling apparatus according to an embodiment of the present disclosure, including:
  • the UL resource scheduling information sending unit 91 is configured to send uplink UL resource scheduling information to the user equipment UE in the first subframe to instruct the UE to start competing channel access opportunities from the second subframe, and compete successfully.
  • the UL resource indicated by the UL resource scheduling information is used when the channel access opportunity is used; wherein a first time delay exists between the first subframe and the second subframe;
  • the UL resource scheduling information releasing unit 92 is configured to release the UL when determining, by the second subframe, that the UE uses the UL resource to perform uplink transmission, or determines that the UL resource scheduling information is invalid.
  • the UL resource scheduling information release unit 92 is specifically configured to:
  • the UL resource scheduling information release unit 92 is specifically configured to:
  • the bearer mode of the UL resource scheduling information in the frequency domain is any one of the following manners:
  • the bearer is carried on other unlicensed frequency bands that are different from the UL resource indicated by the UL resource scheduling information.
  • the UL resource scheduling information sending unit 91 is specifically configured to:
  • the UL resource scheduling information includes: a total number N of schedulable subframes and a first UL resource scheduling parameter;
  • the N UL subframes may be scheduled at the same time, where the N is an integer greater than or equal to 1;
  • the first UL resource scheduling parameter is used by the UE to perform uplink transmission by using the UL resource. Configuration parameters for each UL subframe.
  • the UL resource scheduling information sending unit 91 is specifically configured to:
  • each UL resource scheduling information includes: a schedulable sub Frame arrangement number n, second UL resource scheduling parameters, and schedulable sub- a total number of frames N; wherein the N characterizes that the UE may simultaneously schedule N UL subframes when the uplink resource is transmitted by using the UL resource, where N is an integer greater than or equal to 1;
  • the sequence number of the currently scheduled UL subframe in the N UL subframes that can be simultaneously scheduled the range of n ranges from 0 to N-1, and The value of n is sequentially incremented according to the sending order of the UL resource scheduling information;
  • the second UL resource scheduling parameter is the UL subframe corresponding to the n in the N UL subframes that the UE can simultaneously schedule.
  • Configuration parameters are: a schedulable sub Frame arrangement number n, second UL resource scheduling parameters, and schedulable sub- a total number of frames N;
  • modules or units
  • functions of the various modules may be implemented in one or more software or hardware when implementing the present disclosure.
  • the foregoing first uplink scheduling apparatus may be disposed in a base station.
  • FIG. 10 is a schematic structural diagram of a second uplink scheduling apparatus according to an embodiment of the present disclosure, including:
  • the UL resource scheduling information receiving unit 101 is configured to receive uplink UL resource scheduling information sent by the base station in the first subframe.
  • a competing unit 102 configured to start to contend for a channel access opportunity from the second subframe until the channel access opportunity is successfully contending or the UL resource indicated by the UL resource scheduling information fails; wherein the first subframe and There is a first time delay between the second subframes.
  • the contention unit 102 is specifically configured to:
  • the channel access opportunity When the channel access opportunity is contending from the second subframe, if the channel access opportunity is not successfully contending in the preset time period, it is determined that the UL resource scheduling information is invalid, and the contention channel access opportunity is stopped;
  • the time period is the second subframe to the third subframe, and the second subframe has a second delay between the second subframe and the third subframe; or
  • the contention channel access opportunity is started from the second subframe, if the resource failure information sent by the base station is received, it is determined that the UL resource scheduling information is invalid, and the contention channel access opportunity is stopped; or
  • the new UL resource scheduling information sent by the base station is received, it is determined that the UL resource scheduling information is invalid, and the contention channel access opportunity is stopped;
  • the UL resource indicated by the new UL resource scheduling information is the base station re Assigned to it.
  • the device further comprises:
  • the transmitting unit 103 is configured to perform uplink transmission by using the UL resource indicated by the UL resource scheduling information when successfully competing for a channel access opportunity.
  • the UL resource scheduling information receiving unit 101 is specifically configured to:
  • the UL resource scheduling information includes: a total number N of schedulable subframes and a first UL resource scheduling parameter; the total number of the schedulable subframes
  • the N-characterized UE may simultaneously schedule N UL subframes when the uplink resource is transmitted by using the UL resource, where the N is an integer greater than or equal to 1; the first UL resource scheduling parameter is used by the UE by the UE Configuration parameters of each UL subframe used by the UL resource for uplink transmission;
  • the transmission unit 103 is specifically configured to:
  • the uplink transmission is performed on the N UL subframes from the time of successful competition to the channel access opportunity according to the first UL resource scheduling parameter.
  • the UL resource scheduling information receiving unit 101 is specifically configured to:
  • each of the UL resource scheduling information includes: The N-arrangement sequence number n, the second UL resource scheduling parameter, and the total number of schedulable subframes N; wherein the N characterizes that the UE can simultaneously schedule N ULs when performing uplink transmission by using the UL resource In the subframe, the N is an integer greater than or equal to 1; the n characterizes the arrangement of the currently scheduled UL subframe in the N UL subframes that can be simultaneously scheduled when the UE performs uplink transmission by using the UL resource.
  • the value of the n is in the range of 0 to N-1, and the value of the n is sequentially incremented according to the sending order of the UL resource scheduling information;
  • the second UL resource scheduling parameter is The configuration parameters of the UL subframe corresponding to the n in the N UL subframes that are simultaneously scheduled;
  • the transmission unit is specifically configured to:
  • the second UL resource scheduling parameter corresponding to the n is sequentially used according to the sequence of n from small to large in each received UL resource scheduling information, from successful competition to Uplink transmission is performed on N UL subframes from the channel access opportunity.
  • modules or units
  • the functions of the various modules (or units) may be implemented in one or more software or hardware in the implementation of the present disclosure.
  • the foregoing second uplink scheduling apparatus may be configured in a user equipment.
  • FIG. 11 is a schematic structural diagram of an uplink scheduling system according to an embodiment of the present disclosure, including: a base station 111 and a user equipment 112, where:
  • the base station 111 is configured to send uplink UL resource scheduling information to the user equipment UE 112 in the first subframe to instruct the UE 112 to start competing channel access opportunities from the second subframe, and successfully compete for channel access.
  • the UL resource indicated by the UL resource scheduling information is used when entering the opportunity; wherein, the first time delay exists between the first subframe and the second subframe; and from the second subframe, when Determining, when the UE 112 performs uplink transmission by using the UL resource, or determining that the UL resource scheduling information is invalid, releasing the UL resource indicated by the UL resource scheduling information;
  • the user equipment UE 112 receives the uplink UL resource scheduling information sent by the base station 111 in the first subframe; and starts to contend for the channel access opportunity from the second subframe until the channel access opportunity or the UL resource is successfully contending
  • the UL resource indicated by the scheduling information is invalid.
  • LTE system is taken as an example in the foregoing embodiments, those skilled in the art can apply the foregoing embodiments to other various communication systems after reading the disclosure. For example, it is applied to a flexible frame structure application scenario of a 5G mobile communication system.
  • embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present disclosure 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, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本公开文本公开了一种上行调度方法、装置、设备和***。该方法包括:基站在第一子帧向用户设备UE发送上行链路UL资源调度信息,以指示所述UE从第二子帧起开始竞争信道接入机会,并在成功竞争到信道接入机会时使用所述UL资源调度信息所指示的UL资源;其中,所述第一子帧和所述第二子帧之间存在第一时延;从所述第二子帧起,当判断出所述UE利用所述UL资源进行上行传输,或者判断出所述UL资源调度信息失效时,释放所述UL资源调度信息所指示的UL资源。

Description

上行调度方法、装置、设备和***
相关申请的交叉引用
本申请主张在2015年5月15日在中国提交的中国专利申请No.201510250943.4的优先权,其全部内容通过引用包含于此。
技术领域
本公开文本涉及网络通信技术领域,尤其涉及一种上行调度方法、装置、设备和***。
背景技术
随着移动互联网中数据流量的激增,在非授权频段(U-band)上使用长期演进(Long Term Evolution,LTE)技术已成为发展趋势。非授权频段对于所有的运营商都是开放的,不同运营商具有相同的权利在非授权频段上部署LTE。为了使异***或异运营商公平竞争使用非授权频段,引入了先听后说(listen before talk,LBT)机制,即在每次进行数据传输前,先预留一段时间来对载波进行感知,进行空闲信道评估(Clear Channel Assessment,CCA)过程,当感知到载波可用才开始进行数据传输,并且每次进行数据传输有最大时长的限制。
为了保证非授权频段上业务传输的可靠性,可以采用授权频段(L-band)辅助非授权频段进行业务传输,将授权频段的可靠性与非授权频段丰富的带宽资源相结合,在保证业务传输可靠性的同时提升***吞吐量。具体地,为了保证LTE在非授权频段的性能,相关技术中的协议要求采用载波聚合(Carrier Aggregation,CA)或双连接的方式在非授权频段使用LTE技术。在CA方式中,将授权频段上的载波作为主载波,将非授权频段上的载波作为辅助载波,实现在授权频段辅助下的非授权频段接入方式,即辅助授权接入(Licensed Assisted Access,LAA)。
当允许用户设备(User Equipment,UE)在U-band上传输上行数据时,UE也需要遵循LBT规范。因此UE在U-band上的上行传输为机会传输,也 就是说当UE被调度后,UE不一定每次都能成功竞争到信道接入机会。
而相关技术中的LTE技术中,UE的UL资源是被演进型基站(evolved Node B,eNB)提前分配的。由于U-band信道竞争环境复杂多变,eNB将UL资源调度信息发送给UE时(比如在子帧n处),是无法提前预知UE是否能够在被调度时刻(比如在子帧n+k处)竞争到信道接入机会。如果UE在子帧n+k处未能成功竞争到信道接入机会,那么在子帧n处发送的UL资源调度信息就会因为失效而被作废,这将导致无谓的调度信令开销,也会造成eNB为UE所分配的UL资源的浪费。
更进一步的,如果UE一直竞争不到信道接入机会,eNB就需要持续不断地为UE分配UL资源,并且在物理下行控制信道(Physical Downlink Control Channel,PDCCH)中发送UL资源调度信息,对于eNB来言,会造成较大的调度信令开销以及调度信令的浪费。
发明内容
本公开文本实施例提供一种上行调度方法、装置、设备和***,用以解决相关技术中存在的通信***(例如LTE***)在非授权频段上的上行调度机制可能会导致网络侧造成较大的调度信令开销和调度信令浪费的问题。
本公开文本实施例采用以下技术方案:
第一方面提供了一种上行调度方法,包括:
基站在第一子帧向用户设备UE发送上行链路UL资源调度信息,以指示所述UE从第二子帧起开始竞争信道接入机会,并在成功竞争到信道接入机会时使用所述UL资源调度信息所指示的UL资源;其中,所述第一子帧和所述第二子帧之间存在第一时延;
从所述第二子帧起,当判断出所述UE利用所述UL资源进行上行传输,或者判断出所述UL资源调度信息失效时,释放所述UL资源调度信息所指示的UL资源。
其中,从所述第二子帧起,当判断出所述UE利用所述UL资源进行上行传输时,释放所述UL资源调度信息所指示的UL资源,具体包括:
从所述第二子帧起,在所述UL资源调度信息所指示的UL资源上盲检是 否存在所述UE发送的解调参考信号;当检测出存在所述解调参考信号时,确定所述UE利用所述UL资源进行上行传输,并释放所述UL资源调度信息所指示的UL资源;或者
从所述第二子帧起,在所述UL资源调度信息所指示的UL资源上盲检是否存在所述UE的传输数据;当检测出存在所述传输数据时,确定所述UE利用所述UL资源进行上行传输,并释放所述UL资源调度信息所指示的UL资源;或者
从所述第二子帧起,在所述UL资源调度信息所指示的UL资源上盲检是否存在所述UE发送的前导部分子帧;当检测出存在所述前导部分子帧时,确定所述UE利用所述UL资源进行上行传输,并释放所述UL资源调度信息所指示的UL资源。
其中,从所述第二子帧起,当判断出所述UL资源调度信息失效时,释放所述UL资源调度信息所指示的UL资源,具体包括:
从第二子帧起判断所述UE在预先设置的时间段内是否利用所述UL资源进行上行传输;当判断出所述UE在预先设置的时间段内均没有利用所述UL资源进行上行传输时,确定所述UL资源调度信息失效,并释放所述UL资源调度信息所指示的UL资源;其中,所述时间段为所述第二子帧至第三子帧,且所述第二子帧和所述第三子帧之间存在第二时延;或者
从第二子帧起判断所述基站是否向所述UE发送资源失效信息;当判断出所述基站向所述UE发送资源失效信息时,确定所述UL资源调度信息失效,并释放所述UL资源调度信息所指示的UL资源;或者
从第二子帧起判断所述基站是否向所述UE发送新的UL资源调度信息;其中,所述新的UL资源调度信息所指示的UL资源是所述基站重新为所述UE分配的;当判断出所述基站向所述UE发送新的UL资源调度信息,确定所述UL资源调度信息失效,并释放所述UL资源调度信息所指示的UL资源。
其中,所述UL资源调度信息在频域上的承载方式为下述方式中的任意一种:
在所述基站的授权频段上承载;
在与所述UL资源调度信息所指示的UL资源同频段的非授权频段上承载;
在与所述UL资源调度信息所指示的UL资源不同频段的其它非授权频段上承载。
其中,基站在第一子帧向UE发送UL资源调度信息,具体包括:
基站在第一子帧向UE发送UL资源调度信息;其中,所述UL资源调度信息中包括:可调度子帧总个数N和第一UL资源调度参数;所述N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述第一UL资源调度参数为所述UE利用所述UL资源进行上行传输时所使用的每个UL子帧的配置参数。
其中,基站在第一子帧向UE发送UL资源调度信息,具体包括:
基站向UE发送至少一条UL资源调度信息,且所述至少一条UL资源调度信息中的最后一条UL资源调度信息是在第一子帧发送的;其中,每条UL资源调度信息中包括:可调度子帧排列序号n、第二UL资源调度参数和可调度子帧总个数N;其中,所述N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述n表征所述UE在利用所述UL资源进行上行传输时,当前调度的UL子帧在可同时调度的N个UL子帧中的排列序号,所述n的取值范围为0至N-1,且所述n的取值按照所述UL资源调度信息的发送顺序依次递增;所述第二UL资源调度参数为在所述UE可同时调度的N个UL子帧中,所述n对应的UL子帧的配置参数。
第二方面提供了一种上行调度方法,包括:
用户设备UE在第一子帧接收基站发送的上行链路UL资源调度信息;并
从第二子帧起开始竞争信道接入机会,直至成功竞争到信道接入机会或者所述UL资源调度信息所指示的UL资源失效;其中,所述第一子帧和所述第二子帧之间存在第一时延。
其中,从第二子帧起开始竞争信道接入机会,直至所述UL资源调度信息所指示的UL资源失效,具体包括:
在所述UE从第二子帧开始竞争信道接入机会时,如果所述UE在预先设置的时间段内均没有成功竞争到信道接入机会,确定所述UL资源调度信息失效,并停止竞争信道接入机会;其中,所述时间段为所述第二子帧至第三子 帧,所述第二子帧和所述第三子帧之间存在第二时延;或者
在所述UE从第二子帧起开始竞争信道接入机会时,如果所述UE接收到所述基站发送的资源失效信息,确定所述UL资源调度信息失效,并停止竞争信道接入机会;或者
在所述UE从第二子帧起开始竞争信道接入机会时,如果所述UE接收到所述基站发送的新的UL资源调度信息,确定所述UL资源调度信息失效,并停止竞争信道接入机会;其中,所述新的UL资源调度信息所指示的UL资源是所述基站重新为所述UE分配的。
其中,所述方法还包括:
当所述UE成功竞争到信道接入机会时,利用所述UL资源调度信息所指示的UL资源进行上行传输。
其中,UE在第一子帧接收基站发送的UL资源调度信息,具体包括:
UE在第一子帧接收基站发送的UL资源调度信息;其中,所述UL资源调度信息中包括:可调度子帧总个数N和第一UL资源调度参数;所述可调度子帧总个数N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述第一UL资源调度参数为所述UE利用所述UL资源进行上行传输时所使用的每个UL子帧的配置参数;则
当所述UE成功竞争到信道接入机会时,利用所述UL资源调度信息所指示的UL资源进行上行传输,具体包括:
当所述UE成功竞争到信道接入机会时,按照所述第一UL资源调度参数在从成功竞争到信道接入机会时起的N个UL子帧上进行上行传输。
其中,UE在第一子帧接收基站发送的UL资源调度信息,具体包括:
接收所述基站发送的至少一条UL资源调度信息,且所述至少一条UL资源调度信息中的最后一条UL资源调度信息是在第一子帧接收的;其中,每条UL资源调度信息中包括:可调度子帧排列序号n、第二UL资源调度参数和可调度子帧总个数N;其中,所述N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述n表征所述UE在利用所述UL资源进行上行传输时,当前调度的UL子帧在可同时调度的N个UL子帧中的排列序号,所述n的取值范围为0至N-1,且所述n 的取值按照所述UL资源调度信息的发送顺序依次递增;所述第二UL资源调度参数为在所述UE可同时调度的N个UL子帧中,所述n对应的UL子帧的配置参数;则
当所述UE成功竞争到信道接入机会时,利用所述UL资源调度信息所指示的UL资源进行上行传输,具体包括:
当所述UE成功竞争到信道接入机会时,根据接收到的每条UL资源调度信息中所述n从小到大的顺序,依次使用与所述n对应的第二UL资源调度参数,在从成功竞争到信道接入机会起的N个UL子帧上进行上行传输。
第三方面提供了一种上行调度装置,包括:
UL资源调度信息发送单元,用于在第一子帧向用户设备UE发送上行链路UL资源调度信息,以指示所述UE从第二子帧起开始竞争信道接入机会,并在成功竞争到信道接入机会时使用所述UL资源调度信息所指示的UL资源;其中,所述第一子帧和所述第二子帧之间存在第一时延;
UL资源调度信息释放单元,用于从所述第二子帧起,当判断出所述UE利用所述UL资源进行上行传输,或者判断出所述UL资源调度信息失效时,释放所述UL资源调度信息所指示的UL资源。
其中,所述UL资源调度信息释放单元,具体用于:
从所述第二子帧起,在所述UL资源调度信息所指示的UL资源上盲检是否存在所述UE发送的解调参考信号;当检测出存在所述解调参考信号时,确定所述UE利用所述UL资源进行上行传输,并释放所述UL资源调度信息所指示的UL资源;或者
从所述第二子帧起,在所述UL资源调度信息所指示的UL资源上盲检是否存在所述UE的传输数据;当检测出存在所述传输数据时,确定所述UE利用所述UL资源进行上行传输,并释放所述UL资源调度信息所指示的UL资源;或者
从所述第二子帧起,在所述UL资源调度信息所指示的UL资源上盲检是否存在所述UE发送的前导部分子帧;当检测出存在所述前导部分子帧时,确定所述UE利用所述UL资源进行上行传输,并释放所述UL资源调度信息所指示的UL资源
其中,所述UL资源调度信息释放单元,具体用于:
从第二子帧起判断所述UE在预先设置的时间段内是否利用所述UL资源进行上行传输;当判断出所述UE在预先设置的时间段内均没有利用所述UL资源进行上行传输时,确定所述UL资源调度信息失效,并释放所述UL资源调度信息所指示的UL资源;其中,所述时间段为所述第二子帧至第三子帧,且所述第二子帧和所述第三子帧之间存在第二时延;或者
从第二子帧起判断所述基站是否向所述UE发送资源失效信息;当判断出所述基站向所述UE发送资源失效信息时,确定所述UL资源调度信息失效,并释放所述UL资源调度信息所指示的UL资源;或者
从第二子帧起判断所述基站是否向所述UE发送新的UL资源调度信息;其中,所述新的UL资源调度信息所指示的UL资源是所述基站重新为所述UE分配的;当判断出所述基站向所述UE发送新的UL资源调度信息,确定所述UL资源调度信息失效,并释放所述UL资源调度信息所指示的UL资源。
其中,所述UL资源调度信息在频域上的承载方式为下述方式中的任意一种:
在所述基站的授权频段上承载;
在与所述UL资源调度信息所指示的UL资源同频段的非授权频段上承载;
在与所述UL资源调度信息所指示的UL资源不同频段的其它非授权频段上承载。
其中,所述UL资源调度信息发送单元,具体用于:
在第一子帧向UE发送UL资源调度信息;其中,所述UL资源调度信息中包括:可调度子帧总个数N和第一UL资源调度参数;所述N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述第一UL资源调度参数为所述UE利用所述UL资源进行上行传输时所使用的每个UL子帧的配置参数。
其中,所述UL资源调度信息发送单元,具体用于:
向UE发送至少一条UL资源调度信息,且所述至少一条UL资源调度信息中的最后一条UL资源调度信息是在第一子帧发送的;其中,每条UL资源调度信息中包括:可调度子帧排列序号n、第二UL资源调度参数和可调度子帧 总个数N;其中,所述N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述n表征所述UE在利用所述UL资源进行上行传输时,当前调度的UL子帧在可同时调度的N个UL子帧中的排列序号,所述n的取值范围为0至N-1,且所述n的取值按照所述UL资源调度信息的发送顺序依次递增;所述第二UL资源调度参数为在所述UE可同时调度的N个UL子帧中,所述n对应的UL子帧的配置参数。
第四方面提供了一种上行调度装置,包括:
UL资源调度信息接收单元,用于在第一子帧接收基站发送的上行链路UL资源调度信息;
竞争单元,用于从第二子帧起开始竞争信道接入机会,直至成功竞争到信道接入机会或者所述UL资源调度信息所指示的UL资源失效;其中,所述第一子帧和所述第二子帧之间存在第一时延。
其中,所述竞争单元,具体用于:
在从第二子帧开始竞争信道接入机会时,如果在预先设置的时间段内均没有成功竞争到信道接入机会,确定所述UL资源调度信息失效,并停止竞争信道接入机会;其中,所述时间段为所述第二子帧至第三子帧,所述第二子帧和所述第三子帧之间存在第二时延;或者
在从第二子帧起开始竞争信道接入机会时,如果接收到所述基站发送的资源失效信息,确定所述UL资源调度信息失效,并停止竞争信道接入机会;或者
在从第二子帧起开始竞争信道接入机会时,如果接收到所述基站发送的新的UL资源调度信息,确定所述UL资源调度信息失效,并停止竞争信道接入机会;其中,所述新的UL资源调度信息所指示的UL资源是所述基站重新为其分配的。
其中,所述装置还包括:
传输单元,用于当成功竞争到信道接入机会时,利用所述UL资源调度信息所指示的UL资源进行上行传输。
其中,所述UL资源调度信息接收单元,具体用于:
在第一子帧接收基站发送的UL资源调度信息;其中,所述UL资源调度 信息中包括:可调度子帧总个数N和第一UL资源调度参数;所述可调度子帧总个数N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述第一UL资源调度参数为所述UE利用所述UL资源进行上行传输时所使用的每个UL子帧的配置参数;
所述传输单元,具体用于:
当成功竞争到信道接入机会时,按照所述第一UL资源调度参数在从成功竞争到信道接入机会时起的N个UL子帧上进行上行传输。
其中,所述UL资源调度信息接收单元,具体用于:
接收所述基站发送的至少一条UL资源调度信息,且所述至少一条UL资源调度信息中的最后一条UL资源调度信息是在第一子帧接收的;其中,每条UL资源调度信息中包括:可调度子帧排列序号n、第二UL资源调度参数和可调度子帧总个数N;其中,所述N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述n表征所述UE在利用所述UL资源进行上行传输时,当前调度的UL子帧在可同时调度的N个UL子帧中的排列序号,所述n的取值范围为0至N-1,且所述n的取值按照所述UL资源调度信息的发送顺序依次递增;所述第二UL资源调度参数为在所述UE可同时调度的N个UL子帧中,所述n对应的UL子帧的配置参数;
所述传输单元,具体用于:
当成功竞争到信道接入机会时,根据接收到的每条UL资源调度信息中所述n从小到大的顺序,依次使用与所述n对应的第二UL资源调度参数,在从成功竞争到信道接入机会起的N个UL子帧上进行上行传输。
第五方面提供了一种基站设备,包括上述第三方面任一所述的上行调度装置。
第六方面提供了一种用户设备,包括第四方面任一所述的上行调度装置。
第七方面提供了一种上行调度***,包括:上述基站和上述用户设备。
本公开文本实施例的有益效果如下:
本公开文本实施例中,基站在第一子帧向UE发送UL资源调度信息,以指示UE从第二子帧起开始竞争信道接入机会,并在成功竞争到信道接入机会 时使用UL资源调度信息所指示的UL资源,并从第二子帧起,判断UE是否利用该UL资源进行上行传输,或者判断UL资源调度信息是否失效,当判断出UE利用该UL资源进行上行传输,或者判断出上述UL资源调度信息失效时,释放UL资源调度信息所指示的UL资源。也就是说,基站从第二子帧起为UE预留UL资源调度信息所指示的UL资源,直至UE利用该UL资源进行上行传输或者上述UL资源调度信息失效,上述提到的“预留”并不是说基站在该预留的UL资源上不能再去调度其它UE,而是说该UE从第二子帧起,一旦竞争到信道接入机会,基站能够保证UE在预留的UL资源上获得服务,因此本公开文本提出的该上行调度机制可以使基站节省大量的调度信令开销,同时也不会造成调度信令的浪费。
本公开文本的其它特征和优点将在随后的说明书中阐述,并且,部分地从说明书中变得显而易见,或者通过实施本公开文本而了解。本公开文本的目的和其他优点可通过在所写的说明书、权利要求书、以及附图中所特别指出的结构来实现和获得。
附图说明
为了更清楚地说明本申请实施例的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请中记载的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。以下附图并未刻意按实际尺寸等比例缩放绘制,重点在于示出本申请的主旨。在附图中:
图1为本公开文本实施例提供的一种网络侧实施的上行调度方法的实现流程图;
图2为本公开文本实施例提供的一种终端侧实施的上行调度方法的实现流程图;
图3为单子帧调度示意图;
图4为本公开文本实施例提供的又一种网络侧实施的上行调度方法的实现流程图;
图5为多子帧调度示意图;
图6为本公开文本实施例提供的又一种网络侧实施的上行调度方法的实现流程图;
图7为本公开文本实施例提供的又一种终端侧实施的上行调度方法的实现流程图;
图8为本公开文本实施例提供的又一种终端侧实施的上行调度方法的实现流程图;
图9为本公开文本实施例提供的第一种上行调度装置的结构示意图;
图10为本公开文本实施例提供的第二种上行调度装置的结构示意图;以及
图11为本公开文本实施例提供的上行调度***的结构示意图。
具体实施方式
为使本公开文本实施例的目的、技术方案和优点更加清楚,下面将结合本公开文本实施例的附图,对本公开文本实施例的技术方案进行清楚、完整地描述。显然,所描述的实施例是本公开文本的一部分实施例,而不是全部的实施例。基于所描述的本公开文本的实施例,本领域普通技术人员所获得的所有其他实施例,都属于本公开文本保护的范围。
为了解决相关技术中存在的通信***(例如LTE***)在非授权频段上的上行调度机制可能会导致网络侧造成较大的调度信令开销和调度信令浪费的问题,在本公开文本中,对相关技术中的上行调度机制进行了详细研究。其中,相关技术中的LTE的上行调度流程如下:
1、eNB集中地为所有被服务的UE分配UL资源;
2、eNB通过PDCCH将UL资源调度信息通知给相关UE;
1)UL资源调度信息所指示的UL资源的频域位置信息显式承载在下行链路控制信息(Downlink Control Information,DCI)格式中,其中:
承载UL资源调度信息的DCI格式为DCI format 0或DCI format 4;
DCI format 0/4中包括字段:
Resource block assignment and hopping resource allocation,用于指示UL资源的频域位置信息;
DCI format 0/4中还包括许多其他字段,其中一些重要字段包括:
Modulation and coding scheme and redundancy version,用于指示调制、编码方式及冗余重传版本信息;
TPC command for scheduled PUSCH,用于指示传输功率控制信息;
UL index,该字段(2bit)仅当时分复用(Time Division Duplexing,TDD)***中的上下行子帧配比模式为0时存在,用于支持多于1个UL子帧的调度;
2)UL资源调度信息所指示的UL资源的时域子帧位置则通过一种隐式规则确定,其中:
当eNB为频分复用(Frequency Division Duplexing,FDD)***时,假设UE在子帧n处收到DCI或重传指示,UE则在子帧n+4处实施相应的物理上行共享信道(Physical Uplink Shared Channel,PUSCH)传输;
当eNB是TDD***且上下行子帧配比模式不为0时,或者TDD上下行子帧配比模式恰好等于0但是UL资源调度信息承载在DCI format 4中时,一个DL子帧仅调度一个UL资源,且假设UE在子帧n处收到DCI或重传指示,UE则在子帧n+k处实施相应的PUSCH传输,其中k的取值与TDD的上下行子帧配比模式有关,k的具体取值可以参见下表1。
表1:
Figure PCTCN2016082034-appb-000001
当eNB是TDD***且上下行子帧配比模式恰好等于0时,并且当UL资源调度信息承载在DCI Format 0中时,允许一个DL子帧最多调度两个UL 子帧。具体调度哪些子帧,由DCI Format 0中的字段UL index决定。当UL index的最高有效位(Most Significant Bit,MSB)设置为1时,指定UE在子帧n+k发送PUSCH;当UL index的最低有效位(Least Significant Bit,LSB)设置为1时,指定UE在子帧n+7发送PUSCH;当UL index的MSB、LSB都为1时,指定UE在子帧n+k和子帧n+7上同时发送PUSCH;
综上所述,在相关技术中的LTE上行调度技术中,eNB集中地为所有被服务的UE分配UL资源,且eNB通过PDCCH将UL资源调度信息通知给相关UE,且被分配的UL资源的频域位置信息显式承载在DCI格式中,而UL资源的时域子帧位置则通过一种隐式规则确定,且被分配的UL资源的时域子帧位置(n+k)与DCI所在的子帧(n)具有明确的时间间隔关系。特别地,对于FDD***,k=4;而对于TDD,k由TDD的上下行子帧配比模式决定。
基于上述相关技术中的LTE上行调度机制,结合其存在的问题,本公开文本实施例对其进行改进,提供了一种上行调度方案。该技术方案中,基站在第一子帧向UE发送UL资源调度信息,以指示UE从第二子帧起开始竞争信道接入机会,并在成功竞争到信道接入机会时使用UL资源调度信息所指示的UL资源,并从第二子帧起,判断UE是否利用该UL资源进行上行传输,或者判断UL资源调度信息是否失效,当判断出UE利用该UL资源进行上行传输,或者判断出上述UL资源调度信息失效时,释放UL资源调度信息所指示的UL资源。也就是说,基站从第二子帧起为UE预留UL资源调度信息所指示的UL资源,直至UE利用该UL资源进行上行传输或者上述UL资源调度信息失效,使得基站可以节省大量的调度信令开销,同时也不会造成调度信令的浪费。
以下结合说明书附图对本公开文本的实施例进行说明,应当理解,此处所描述的实施例仅用于说明和解释本公开文本,并不用于限制本公开文本。并且在不冲突的情况下,本公开文本中的实施例及实施例的特征可以互相结合。
需要说明的是,本公开文本实施例提供出的上行调度方法、装置、设备和***可以应用在作为典型应用场景的非授权频段的应用场景下,也可以应用在授权频段的应用场景下,即本公开文本实施例所提出的上行调度方法、 装置、设备和***的应用场景并不受非授权频段的应用场景的限制。
更进一步地,本领域技术人员在阅读了本公开文本后,还能够将本公开文本的技术方案应用于其他各种通信***中,例如应用于第五代(5th Generation,5G)移动通信***的灵活帧结构应用场景中。
本公开文本实施例提供了一种上行调度方法,如图1所示,为该方法的实现流程图,具体包括下述步骤:
步骤11,基站在第一子帧向UE发送UL资源调度信息,以指示UE从第二子帧起开始竞争信道接入机会,并在成功竞争到信道接入机会时使用该UL资源调度信息所指示的UL资源;其中,第一子帧和第二子帧之间存在第一时延。
在本公开文本实施例中,第一子帧和第二子帧之间存在的第一时延可以但不限于以子帧为单位,也可以以正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)符号为单位。
其中,第一时延以子帧为单位时,比如基站在子帧n向UE发送UL资源调度信息,则UE从子帧n+k起开始竞争信道接入机会,并在成功竞争到信道接入机会时使用该UL资源调度信息所指示的UL资源,这里的k即为第一时延。
需要说明的是,上述k可以是预先设置的,其可以是一个固定值,比如在FDD***中可以令k=4,在TDD***中,可以根据其上下行子帧配比模式进行设置,如上述表1。或者是其他的任意取值。
本公开文本实施例与相关技术相比,基站向UE发送UL资源调度信息时,该UL资源调度信息所指示的UL资源的时域子帧位置不再是通过预先设置的隐式规则确定,即该UL资源调度信息所指示的UL资源的时域子帧位置与基站发送UL资源调度信息的所在子帧不再具有明确的时间间隔关系,而是基站从第二子帧起为UE预留该UL资源调度信息所指示的UL资源。
需要说明的是,上述提到的“预留”并不是说基站在该预留的UL资源上不能再去调度其它UE,而是说该UE从第二子帧起,一旦竞争到信道接入机会,基站能够保证UE在预留的UL资源上获得服务。而基站可以通过调度技术为多个不同的UE预留相同的UL资源。
另外,在本公开文本实施例中,基站向UE发送的UL资源调度信息在频域上的承载方式可以但不限于为下述方式中的任意一种:
在基站的授权频段上承载,即跨载波调度;
在与UL资源调度信息所指示的UL资源同频段的非授权频段上承载,即自载波调度;
在与UL资源调度信息所指示的UL资源不同频段的其它非授权频段上承载,即跨载波调度。
步骤12,从第二子帧起,当判断出UE利用该UL资源调度信息所指示的UL资源进行上行传输,或者判断UL资源调度信息失效时,释放该UL资源调度信息所指示的UL资源。
基站虽然从第二子帧起为UE预留UL资源调度信息所指示的UL资源,但是也不能无限制地预留,因为如果UE一直都没能成功竞争到信道接入机会,那么为其预留的UL资源就会一直处于空闲状态,从而造成UL资源的浪费。
因此,基站从第二子帧起,判断UE是否利用该UL资源调度信息所指示的UL资源进行上行传输,或者判断UL资源调度信息是否失效,当判断出UE利用该UL资源调度信息所指示的UL资源进行上行传输,或者判断出UL资源调度信息失效时,释放该UL资源调度信息所指示的UL资源。
其中,从第二子帧起,当判断出UL资源调度信息失效时,释放UL资源调度信息所指示的UL资源,可以但不限于按照如下方式确定:
第一种方式:
从第二子帧起,判断UE在预先设置的时间段内是否利用UL资源进行上行传输;
当判断出UE在预先设置的时间段内均没有利用UL资源进行上行传输时,确定UL资源调度信息失效,并释放UL资源调度信息所指示的UL资源;
其中,预先设置的时间段为第二子帧至第三子帧,且第二子帧和第三子帧之间存在第二时延。
在本公开文本实施例中,第二子帧和第三子帧之间存在的第二时延可以但不限于以子帧为单位,也可以以OFDM符号为单位。
其中,第二时延以子帧为单位时,比如第二子帧为子帧n+k,第三子帧为n+k+l,则第二子帧和第三子帧之间的第二时延为l,l可以是预先设置的,其可以是一个固定值,如4或10,也可以通过在DCI中增加一个字段以显式指示给UE。
第二种方式:
从第二子帧起判断基站是否向UE发送资源失效信息;
当判断出基站向UE发送资源失效信息时,确定UL资源调度信息失效,并释放UL资源调度信息所指示的UL资源。
具体地,eNB可以通过某个专用信令通知UE之前为其分配的UL资源失效。比如,可以设计一种新的DCI以承载该资源失效信息;或者也可以在相关技术中的DCI中增加一个新的字段(如UL资源失效标记)以承载该资源失效信息;或者该资源失效信息也可以随同混合自动重传请求(Hybrid Automatic Repeat reQuest,HARQ)反馈信息一起发给UE。
第三种方式:
从第二子帧起判断基站是否向所述UE发送新的UL资源调度信息;其中,新的UL资源调度信息所指示的UL资源是基站重新为UE分配的;
当判断出基站向UE发送新的UL资源调度信息,确定UL资源调度信息失效,并释放UL资源调度信息所指示的UL资源。
另外,在相关技术中,基站向UE发送了UL资源调度信息之后,由于UL资源调度信息所指示的UL资源的时域子帧位置与基站发送UL资源调度信息的所在子帧不具有明确的时间间隔关系,因此基站只需要在确定的时域子帧位置上解调UE的上行数据即可。但是在本公开文本实施例中,UL资源调度信息所指示的UL资源的时域子帧位置与基站发送UL资源调度信息的所在子帧不再具有明确的时间间隔关系,因此基站需要一直在为UE预留的UL资源上监视UE何时获得信道接入机会,也就是说,基站需要从第二子帧起判断UE是否利用UL资源进行上行传输。
具体地,从第二子帧起,当判断出UE利用UL资源进行上行传输时,释放UL资源调度信息所指示的UL资源,可以但不限于按照如下几种方式实现:
第一种方式:
从第二子帧起,在UL资源调度信息所指示的UL资源上盲检是否存在UE发送的解调参考信号(De Modulation Reference Signal,DM RS);
当检测出存在该解调参考信号时,确定UE利用UL资源进行上行传输,并释放UL资源调度信息所指示的UL资源。
其中,调制解调信号处于UE的传输数据中,基站只要在为UE预留的UL资源中检测到存在DM RS,就能确定UE已经成功竞争到信道接入机会。但是,通常情况下,DM RS符号可能开始于第二个或第三个OFDM符号上,因此这种方式具有滞后性。
为了避免漏检,对于每个可能的UL子帧,eNB都需要至少缓存前几个OFDM符号,直至完成DM RS的存在性判决。
特别地,DM RS是与小区相关(cell specified)的,易于eNB做信号检测。其原因在于,考虑到多UE通过频分复用共享UL频域资源的场景,eNB不需要为每个UE配置不同的匹配序列,而只要配置一种相同的cell specified序列,就能够在所有频带上完成DM RS的存在性检测。
总而言之,eNB在为某个UE所预留的UL资源上检测到了DM RS,则确定该UE成功竞争到信道接入机会,并利用该UL资源进行上行传输;否则,确定UE未成功竞争到信道接入机会。
第二种方式:
从第二子帧起,在UL资源调度信息所指示的UL资源上盲检是否存在UE的传输数据;
当检测出存在传输数据时,确定UE利用UL资源进行上行传输,并释放UL资源调度信息所指示的UL资源。
具体地,eNB在每个可能的UL子帧处,尝试解析被调度的UL资源。如果能够正确解调,则确定该UE成功竞争到信道接入机会;否则,则确定UE未成功竞争到信道接入机会。
需要说明的是,由于UE的传输数据是被UE相关(UE specified)的序列加扰的,因此这种方式与第一种方式相比,盲检复杂度较高。
第三种方式:
从第二子帧起,在UL资源调度信息所指示的UL资源上盲检是否存在 UE发送的前导部分子帧;
当检测出存在前导部分子帧时,确定UE利用UL资源进行上行传输,并释放UL资源调度信息所指示的UL资源。
具体地,如果UE成功竞争到信道接入机会,UE先发送前导部分子帧占据信道,等到达L-band下一个子帧的边界后,再真正发送上行数据。UE发送的前导部分子帧的部分信息(如部分OFDM符号)为UE specified。因此,eNB可以通过检测UE发送的前导部分子帧来判断UE是否成功竞争到信道接入机会。
本公开文本实施例中,基站在第一子帧向UE发送UL资源调度信息,以指示UE从第二子帧起开始竞争信道接入机会,并在成功竞争到信道接入机会时使用UL资源调度信息所指示的UL资源,并从第二子帧起,判断UE是否利用该UL资源进行上行传输,或者判断UL资源调度信息是否失效,当判断出UE利用该UL资源进行上行传输,或者判断出上述UL资源调度信息失效时,释放UL资源调度信息所指示的UL资源。也就是说,基站从第二子帧起为UE预留UL资源调度信息所指示的UL资源,直至UE利用该UL资源进行上行传输或者上述UL资源调度信息失效,使得基站可以节省大量的调度信令开销,同时也不会造成调度信令的浪费。
基于上述网络侧实施的上行调度方法,本公开文本实施例还提出了一种终端侧实施的上行调度方法,如图2所示,包括如下步骤:
步骤21,UE在第一子帧接收基站发送的上行链路UL资源调度信息。
步骤22,从第二子帧起开始竞争信道接入机会,直至成功竞争到信道接入机会,或者所述UL资源调度信息所指示的UL资源失效;其中,第一子帧和第二子帧之间存在第一时延。
具体地,从第二子帧起开始竞争信道接入机会,直至UL资源调度信息所指示的UL资源失效,可以但不限于按照如下方式实现:
第一种方式:
在UE从第二子帧开始竞争信道接入机会时,如果UE在预先设置的时间段内均没有成功竞争到信道接入机会,确定UL资源调度信息失效,并停止竞争信道接入机会;其中,预先设置的时间段为第二子帧至第三子帧,第二 子帧和第三子帧之间存在第二时延;
第二种方式:
在UE从第二子帧起开始竞争信道接入机会时,如果UE接收到基站发送的资源失效信息,确定UL资源调度信息失效,并停止竞争信道接入机会;
第三种方式:
在UE从第二子帧起开始竞争信道接入机会时,如果UE接收到基站发送的新的UL资源调度信息,确定UL资源调度信息失效,并停止竞争信道接入机会;其中,新的UL资源调度信息所指示的UL资源是基站重新为UE分配的。
上述具体实现过程与网络侧实施的具体实现过程是对应的,在此不再赘述。
本公开文本实施例中,UE执行LBT机制竞争信道接入机会,当UE成功竞争到信道接入机会后,UE在UL资源调度信息所指示的UL资源(主要是指频域资源)上实施上行传输。
按照本公开文本实施例提供的上行调度流程,当UE成功竞争到信道接入机会后,利用UL资源调度信息所指示的UL资源(主要是指频域资源)上实施上行传输,通常情况下,一个DL子帧仅能调度一个UL子帧,也就意味着UE完成一个子帧的上行传输后,该频域资源就会被释放,并由基站将其再分配给下一个UE使用。那么,当一个UE同时有多个UL子帧需要传输时,那么上述的上行调度流程就会导致相邻两次调度之间存在较大的时域间隔,从而导致传输效率低下。
如图3所示,为单子帧调度示意图。其中,eNB在n1时刻第一次为UE1分配UL资源。UE1在m1时刻才成功竞争到信道接入机会。eNB在m1时刻确认UE成功竞争到了信道接入机会,并释放相应的UL资源。
由于UE1还有大量UL数据需要传输,eNB在n2时刻第二次为UE1分配UL资源。显然,n2>m1。UE1在m2时刻成功竞争到信道接入机会。由于UL信令从发出到生效至少需要经过k个子帧,因此,m2-n2≥k。因此UE两次上次传输机会之间至少需要等待:m2-m1≥k+n2-m1>k+1。即UE每传输1个UL子帧,中间至少需要等待k+1个子帧,因此UE最大的传输效率≤1/(k+1)。
再考虑到在U-band环境中存在大量的其他设备(如WIFI),UE不一定每次都能顺利的竞争到信道接入机会,因此两次UL传输之间将会经历更长的等待时间,即实际的UE传输效率将会远低于1/(k+1)。
基于上述分析,相关技术中的上行调度流程将会导致较低的UE UL传输效率。
为了进一步解决这个问题,本公开文本实施例对上述上行调度流程进行了改进,使UE成功竞争到信道接入机会时,可以同时传输多个UL子帧。
如图4所示,为本公开文本实施例提供的又一种网络侧实施的上行调度方法的实现流程图,具体包括如下步骤:
步骤41,基站在第一子帧向UE发送UL资源调度信息,以指示UE从第二子帧起开始竞争信道接入机会,并在成功竞争到信道接入机会时使用UL资源调度信息所指示的UL资源;其中,UL资源调度信息中包括:可调度子帧总个数N和第一UL资源调度参数,N表征UE在利用UL资源进行上行传输时,可以同时调度N个UL子帧,N为大于等于1的整数,第一UL资源调度参数为UE利用UL资源进行上行传输时所使用的每个UL子帧的配置参数。
第一子帧和第二子帧之间存在第一时延。
在本实施例中,基站为UE利用UL资源进行上行传输时所使用的每个UL子帧配置了相同的调度参数。
可选地,可以通过在DCI format中增加新字段来实现:
subframe number N in UL TXOP:
其中,一些地域性规范对最长传输时间长度有限制,称之为TXOP(transmission opportunity)。比如在日本,要求TXOP≤4ms;在欧洲,要求TXOP≤10ms。因此在有TXOP规范约束的地区,要求一次性UL传输的总时长≤TXOP,本公开文本实施例中可以但不限于将N设置为4。
步骤42,从第二子帧起,当判断出UE利用UL资源进行上行传输,或者判断出UL资源调度信息失效时,释放UL资源调度信息所指示的UL资源。
该步骤的实现过程与上述步骤12的实现过程相似,在此不再赘述。
如图5所示,为按照上述实施例实施的多子帧调度示意图。其中,eNB 在m1时刻确认UE成功竞争到了信道接入机会,因此在m1时刻释放相应的UL资源。特别地,如果UE仍然有UL数据需要传输,eNB可以在确认UE上一次成功竞争到的信道接入机会之后的第二个子帧(m1+1,即n2)处就开始为UE分配下一次UL资源。理想情况下,UE在上一次UL传输结束后,在m2时刻再次竞争到信道接入机会,然后立刻开始新的UL传输。即在UL多子帧传输模式下,UL调度不会成为限制UL传输效率的瓶颈。
如图6所示,为本公开文本实施例提供的又一种网络侧实施的上行调度方法的实现流程图,具体包括如下步骤:
步骤61,基站向UE发送至少一条UL资源调度信息,且至少一条UL资源调度信息中的最后一条UL资源调度信息是在第一子帧发送的,以指示UE从第二子帧起开始竞争信道接入机会,并在成功竞争到信道接入机会时使用UL资源调度信息所指示的UL资源;其中,每条UL资源调度信息中包括:可调度子帧排列序号n、第二UL资源调度参数和可调度子帧总个数N;其中,N表征UE在利用UL资源进行上行传输时,可以同时调度N个UL子帧,N为大于等于1的整数;n表征UE在利用UL资源进行上行传输时,当前调度的UL子帧在可同时调度的N个UL子帧中的排列序号,n的取值范围为0至N-1,且n的取值按照所述UL资源调度信息的发送顺序依次递增;第二UL资源调度参数为在UE可同时调度的N个UL子帧中,n对应的UL子帧的配置参数。
第一子帧和第二子帧之间存在第一时延。
在本实施例中,基站为UE利用UL资源进行上行传输时所使用的每个UL子帧配置了不完全相同的调度参数。
可选地,可以通过在DCI format中增加新字段来实现:
Subframe sequence number n in UL TXOP:
步骤62,从第二子帧起,当判断出UE利用UL资源进行上行传输,或者判断出UL资源调度信息失效时,释放UL资源调度信息所指示的UL资源。
该步骤的实现过程与上述步骤12的实现过程相似,在此不再赘述。
另外,还需要说明的是,相关技术的DCI format 0中的UL index字段的功能与本公开文本实施例的功能有所重叠。因此当采用本公开文本实施例的 方案之后,字段UL index是不需要的,因此可以取消DCI format 0中的UL index字段,节省下来的bit数可以挪作它用。特别地,可以复用相关技术中的UL index字段来指示多子帧调度信息,以降低多子帧调度方式所带来的DCI开销。
基于上述网络侧的改进,本公开文本实施例还提出了又一种终端侧实施的上行调度方法,如图7所示,包括如下步骤:
步骤71,UE在第一子帧接收基站发送的UL资源调度信息;其中,UL资源调度信息中包括:可调度子帧总个数N和第一UL资源调度参数;N表征UE在利用UL资源进行上行传输时,可以同时调度N个UL子帧,N为大于等于1的整数;第一UL资源调度参数为UE利用UL资源进行上行传输时所使用的每个UL子帧的配置参数。
步骤72,从第二子帧起开始竞争信道接入机会,直至成功竞争到信道接入机会,或者所述UL资源调度信息所指示的UL资源失效。
步骤73,当UE成功竞争到信道接入机会时,按照第一UL资源调度参数在从成功竞争到信道接入机会时起的N个UL子帧上进行上行传输。
本公开文本实施例还提出了又一种终端侧实施的上行调度方法,如图8所示,包括如下步骤:
步骤81,接收基站发送的至少一条UL资源调度信息,且至少一条UL资源调度信息中的最后一条UL资源调度信息是在第一子帧接收的;其中,每条UL资源调度信息中包括:可调度子帧排列序号n、第二UL资源调度参数和可调度子帧总个数N;其中,N表征UE在利用UL资源进行上行传输时,可以同时调度N个UL子帧,N为大于等于1的整数;n表征UE在利用UL资源进行上行传输时,当前调度的UL子帧在可同时调度的N个UL子帧中的排列序号,n的取值范围为0至N-1,且n的取值按照UL资源调度信息的发送顺序依次递增;第二UL资源调度参数为在UE可同时调度的N个UL子帧中,n对应的UL子帧的配置参数。
步骤82,从第二子帧起开始竞争信道接入机会,直至成功竞争到信道接入机会,或者所述UL资源调度信息所指示的UL资源失效。
步骤83,当UE成功竞争到信道接入机会时,根据接收到的每条UL资 源调度信息中n从小到大的顺序,依次使用与n对应的第二UL资源调度参数,在从成功竞争到信道接入机会起的N个UL子帧上进行上行传输。
基于同一发明构思,本公开文本实施例中还分别提供了一种网络侧实施的上行调度装置、设备和终端侧实施的上行调度装置、设备以及上行调度***,由于上述装置、设备及***解决问题的原理与网络侧实施的上行调度方法和终端侧实施的上行调度方法相似,因此上述装置、设备及***的实施可以参见方法的实施,重复之处不再赘述。
如图9所示,为本公开文本实施例提供的第一种上行调度装置的结构示意图,包括:
UL资源调度信息发送单元91,用于在第一子帧向用户设备UE发送上行链路UL资源调度信息,以指示所述UE从第二子帧起开始竞争信道接入机会,并在成功竞争到信道接入机会时使用所述UL资源调度信息所指示的UL资源;其中,所述第一子帧和所述第二子帧之间存在第一时延;
UL资源调度信息释放单元92,用于从所述第二子帧起,当判断出所述UE利用所述UL资源进行上行传输,或者判断出所述UL资源调度信息失效时,释放所述UL资源调度信息所指示的UL资源。
其中,所述UL资源调度信息释放单元92,具体用于:
从所述第二子帧起,在所述UL资源调度信息所指示的UL资源上盲检是否存在所述UE发送的解调参考信号;当检测出存在所述解调参考信号时,确定所述UE利用所述UL资源进行上行传输,并释放所述UL资源调度信息所指示的UL资源;或者
从所述第二子帧起,在所述UL资源调度信息所指示的UL资源上盲检是否存在所述UE的传输数据;当检测出存在所述传输数据时,确定所述UE利用所述UL资源进行上行传输,并释放所述UL资源调度信息所指示的UL资源;或者
从所述第二子帧起,在所述UL资源调度信息所指示的UL资源上盲检是否存在所述UE发送的前导部分子帧;当检测出存在所述前导部分子帧时,确定所述UE利用所述UL资源进行上行传输,并释放所述UL资源调度信息所指示的UL资源。
其中,所述UL资源调度信息释放单元92,具体用于:
从第二子帧起判断所述UE在预先设置的时间段内是否利用所述UL资源进行上行传输;当判断出所述UE在预先设置的时间段内均没有利用所述UL资源进行上行传输时,确定所述UL资源调度信息失效,并释放所述UL资源调度信息所指示的UL资源;其中,所述时间段为所述第二子帧至第三子帧,且所述第二子帧和所述第三子帧之间存在第二时延;或者
从第二子帧起判断所述基站是否向所述UE发送资源失效信息;当判断出所述基站向所述UE发送资源失效信息时,确定所述UL资源调度信息失效,并释放所述UL资源调度信息所指示的UL资源;或者
从第二子帧起判断所述基站是否向所述UE发送新的UL资源调度信息;其中,所述新的UL资源调度信息所指示的UL资源是所述基站重新为所述UE分配的;当判断出所述基站向所述UE发送新的UL资源调度信息,确定所述UL资源调度信息失效,并释放所述UL资源调度信息所指示的UL资源。
其中,所述UL资源调度信息在频域上的承载方式为下述方式中的任意一种:
在所述基站的授权频段上承载;
在与所述UL资源调度信息所指示的UL资源同频段的非授权频段上承载;
在与所述UL资源调度信息所指示的UL资源不同频段的其它非授权频段上承载。
其中,所述UL资源调度信息发送单元91,具体用于:
在第一子帧向UE发送UL资源调度信息;其中,所述UL资源调度信息中包括:可调度子帧总个数N和第一UL资源调度参数;所述N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述第一UL资源调度参数为所述UE利用所述UL资源进行上行传输时所使用的每个UL子帧的配置参数。
其中,所述UL资源调度信息发送单元91,具体用于:
向UE发送至少一条UL资源调度信息,且所述至少一条UL资源调度信息中的最后一条UL资源调度信息是在第一子帧发送的;其中,每条UL资源调度信息中包括:可调度子帧排列序号n、第二UL资源调度参数和可调度子 帧总个数N;其中,所述N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述n表征所述UE在利用所述UL资源进行上行传输时,当前调度的UL子帧在可同时调度的N个UL子帧中的排列序号,所述n的取值范围为0至N-1,且所述n的取值按照所述UL资源调度信息的发送顺序依次递增;所述第二UL资源调度参数为在所述UE可同时调度的N个UL子帧中,所述n对应的UL子帧的配置参数。
为了描述的方便,以上各部分按照功能划分为各模块(或单元)分别描述。当然,在实施本公开时可以把各模块(或单元)的功能在同一个或多个软件或硬件中实现。
具体实施时,上述第一种上行调度装置可以设置在基站中。
如图10所示,为本公开文本实施例提供的第二种上行调度装置的结构示意图,包括:
UL资源调度信息接收单元101,用于在第一子帧接收基站发送的上行链路UL资源调度信息;
竞争单元102,用于从第二子帧起开始竞争信道接入机会,直至成功竞争到信道接入机会或者所述UL资源调度信息所指示的UL资源失效;其中,所述第一子帧和所述第二子帧之间存在第一时延。
其中,所述竞争单元102,具体用于:
在从第二子帧开始竞争信道接入机会时,如果在预先设置的时间段内均没有成功竞争到信道接入机会,确定所述UL资源调度信息失效,并停止竞争信道接入机会;其中,所述时间段为所述第二子帧至第三子帧,所述第二子帧和所述第三子帧之间存在第二时延;或者
在从第二子帧起开始竞争信道接入机会时,如果接收到所述基站发送的资源失效信息,确定所述UL资源调度信息失效,并停止竞争信道接入机会;或者
在从第二子帧起开始竞争信道接入机会时,如果接收到所述基站发送的新的UL资源调度信息,确定所述UL资源调度信息失效,并停止竞争信道接入机会;其中,所述新的UL资源调度信息所指示的UL资源是所述基站重新 为其分配的。
其中,所述装置还包括:
传输单元103,用于当成功竞争到信道接入机会时,利用所述UL资源调度信息所指示的UL资源进行上行传输。
其中,所述UL资源调度信息接收单元101,具体用于:
在第一子帧接收基站发送的UL资源调度信息;其中,所述UL资源调度信息中包括:可调度子帧总个数N和第一UL资源调度参数;所述可调度子帧总个数N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述第一UL资源调度参数为所述UE利用所述UL资源进行上行传输时所使用的每个UL子帧的配置参数;
所述传输单元103,具体用于:
当成功竞争到信道接入机会时,按照所述第一UL资源调度参数在从成功竞争到信道接入机会时起的N个UL子帧上进行上行传输。
其中,所述UL资源调度信息接收单元101,具体用于:
接收所述基站发送的至少一条UL资源调度信息,且所述至少一条UL资源调度信息中的最后一条UL资源调度信息是在第一子帧接收的;其中,每条UL资源调度信息中包括:可调度子帧排列序号n、第二UL资源调度参数和可调度子帧总个数N;其中,所述N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述n表征所述UE在利用所述UL资源进行上行传输时,当前调度的UL子帧在可同时调度的N个UL子帧中的排列序号,所述n的取值范围为0至N-1,且所述n的取值按照所述UL资源调度信息的发送顺序依次递增;所述第二UL资源调度参数为在所述UE可同时调度的N个UL子帧中,所述n对应的UL子帧的配置参数;
所述传输单元,具体用于:
当成功竞争到信道接入机会时,根据接收到的每条UL资源调度信息中所述n从小到大的顺序,依次使用与所述n对应的第二UL资源调度参数,在从成功竞争到信道接入机会起的N个UL子帧上进行上行传输。
为了描述的方便,以上各部分按照功能划分为各模块(或单元)分别描述。当然,在实施本公开文本时可以把各模块(或单元)的功能在同一个或多个软件或硬件中实现。
具体实施时,上述第二种上行调度装置可以设置在用户设备中。
如图11所示,为本公开文本实施例提供的上行调度***的结构示意图,包括:基站111和用户设备112,其中:
所述基站111,用于在第一子帧向用户设备UE112发送上行链路UL资源调度信息,以指示所述UE112从第二子帧起开始竞争信道接入机会,并在成功竞争到信道接入机会时使用所述UL资源调度信息所指示的UL资源;其中,所述第一子帧和所述第二子帧之间存在第一时延;并从所述第二子帧起,当判断出所述UE112利用所述UL资源进行上行传输,或者判断出所述UL资源调度信息失效时,释放所述UL资源调度信息所指示的UL资源;
所述用户设备UE112在第一子帧接收基站111发送的上行链路UL资源调度信息;并从第二子帧起开始竞争信道接入机会,直至成功竞争到信道接入机会或者所述UL资源调度信息所指示的UL资源失效。
需要说明的是,尽管在上述各个实施例中是以LTE***为例进行说明的,但本领域技术人员在阅读了本公开文本后,还能够将上述实施例应用于其他各种通信***中,例如应用于5G移动通信***的灵活帧结构应用场景中。
本领域内的技术人员应明白,本公开文本的实施例可提供为方法、***、或计算机程序产品。因此,本公开文本可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本公开文本可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本公开文本是参照根据本公开文本实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机 器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本公开文本的可选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例作出另外的变更和修改。所以,所附权利要求意欲解释为包括可选实施例以及落入本公开文本范围的所有变更和修改。
显然,本领域的技术人员可以对本公开文本进行各种改动和变型而不脱离本公开文本的精神和范围。这样,倘若本公开文本的这些修改和变型属于本公开文本权利要求及其等同技术的范围之内,则本公开文本也意图包含这些改动和变型在内。

Claims (25)

  1. 一种上行调度方法,包括:
    基站在第一子帧向用户设备UE发送上行链路UL资源调度信息,以指示所述UE从第二子帧起开始竞争信道接入机会,并在成功竞争到信道接入机会时使用所述UL资源调度信息所指示的UL资源;其中,所述第一子帧和所述第二子帧之间存在第一时延;以及
    从所述第二子帧起,当判断出所述UE利用所述UL资源进行上行传输,或者判断出所述UL资源调度信息失效时,释放所述UL资源调度信息所指示的UL资源。
  2. 如权利要求1所述的方法,其中,从所述第二子帧起,当判断出所述UE利用所述UL资源进行上行传输时,释放所述UL资源调度信息所指示的UL资源,具体包括:
    从所述第二子帧起,在所述UL资源调度信息所指示的UL资源上盲检是否存在所述UE发送的解调参考信号;当检测出存在所述解调参考信号时,确定所述UE利用所述UL资源进行上行传输,并释放所述UL资源调度信息所指示的UL资源;或者
    从所述第二子帧起,在所述UL资源调度信息所指示的UL资源上盲检是否存在所述UE的传输数据;当检测出存在所述传输数据时,确定所述UE利用所述UL资源进行上行传输,并释放所述UL资源调度信息所指示的UL资源;或者
    从所述第二子帧起,在所述UL资源调度信息所指示的UL资源上盲检是否存在所述UE发送的前导部分子帧;当检测出存在所述前导部分子帧时,确定所述UE利用所述UL资源进行上行传输,并释放所述UL资源调度信息所指示的UL资源。
  3. 如权利要求1所述的方法,其中,从所述第二子帧起,当判断出所述UL资源调度信息失效时,释放所述UL资源调度信息所指示的UL资源,具体包括:
    从第二子帧起判断所述UE在预先设置的时间段内是否利用所述UL资源 进行上行传输;当判断出所述UE在预先设置的时间段内均没有利用所述UL资源进行上行传输时,确定所述UL资源调度信息失效,并释放所述UL资源调度信息所指示的UL资源;其中,所述时间段为所述第二子帧至第三子帧,且所述第二子帧和所述第三子帧之间存在第二时延;或者
    从第二子帧起判断所述基站是否向所述UE发送资源失效信息;当判断出所述基站向所述UE发送资源失效信息时,确定所述UL资源调度信息失效,并释放所述UL资源调度信息所指示的UL资源;或者
    从第二子帧起判断所述基站是否向所述UE发送新的UL资源调度信息;其中,所述新的UL资源调度信息所指示的UL资源是所述基站重新为所述UE分配的;当判断出所述基站向所述UE发送新的UL资源调度信息,确定所述UL资源调度信息失效,并释放所述UL资源调度信息所指示的UL资源。
  4. 如权利要求1所述的方法,其中,所述UL资源调度信息在频域上的承载方式为下述方式中的任意一种:
    在所述基站的授权频段上承载;
    在与所述UL资源调度信息所指示的UL资源同频段的非授权频段上承载;以及
    在与所述UL资源调度信息所指示的UL资源不同频段的其它非授权频段上承载。
  5. 如权利要求1所述的方法,其中,基站在第一子帧向UE发送UL资源调度信息,具体包括:
    基站在第一子帧向UE发送UL资源调度信息;其中,所述UL资源调度信息中包括:可调度子帧总个数N和第一UL资源调度参数;所述N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述第一UL资源调度参数为所述UE利用所述UL资源进行上行传输时所使用的每个UL子帧的配置参数。
  6. 如权利要求1所述的方法,其中,基站在第一子帧向UE发送UL资源调度信息,具体包括:
    基站向UE发送至少一条UL资源调度信息,且所述至少一条UL资源调度信息中的最后一条UL资源调度信息是在第一子帧发送的;其中,每条UL资 源调度信息中包括:可调度子帧排列序号n、第二UL资源调度参数和可调度子帧总个数N;其中,所述N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述n表征所述UE在利用所述UL资源进行上行传输时,当前调度的UL子帧在可同时调度的N个UL子帧中的排列序号,所述n的取值范围为0至N-1,且所述n的取值按照所述UL资源调度信息的发送顺序依次递增;所述第二UL资源调度参数为在所述UE可同时调度的N个UL子帧中,所述n对应的UL子帧的配置参数。
  7. 一种上行调度方法,包括:
    用户设备UE在第一子帧接收基站发送的上行链路UL资源调度信息;以及
    从第二子帧起开始竞争信道接入机会,直至成功竞争到信道接入机会或者所述UL资源调度信息所指示的UL资源失效;其中,所述第一子帧和所述第二子帧之间存在第一时延。
  8. 如权利要求7所述的方法,其中,从第二子帧起开始竞争信道接入机会,直至所述UL资源调度信息所指示的UL资源失效,具体包括:
    在所述UE从第二子帧开始竞争信道接入机会时,如果所述UE在预先设置的时间段内均没有成功竞争到信道接入机会,确定所述UL资源调度信息失效,并停止竞争信道接入机会;其中,所述时间段为所述第二子帧至第三子帧,所述第二子帧和所述第三子帧之间存在第二时延;或者
    在所述UE从第二子帧起开始竞争信道接入机会时,如果所述UE接收到所述基站发送的资源失效信息,确定所述UL资源调度信息失效,并停止竞争信道接入机会;或者
    在所述UE从第二子帧起开始竞争信道接入机会时,如果所述UE接收到所述基站发送的新的UL资源调度信息,确定所述UL资源调度信息失效,并停止竞争信道接入机会;其中,所述新的UL资源调度信息所指示的UL资源是所述基站重新为所述UE分配的。
  9. 如权利要求7所述的方法,其中,所述方法还包括:
    当所述UE成功竞争到信道接入机会时,利用所述UL资源调度信息所指 示的UL资源进行上行传输。
  10. 如权利要求9所述的方法,其中,
    UE在第一子帧接收基站发送的UL资源调度信息,具体包括:
    UE在第一子帧接收基站发送的UL资源调度信息;其中,所述UL资源调度信息中包括:可调度子帧总个数N和第一UL资源调度参数;所述可调度子帧总个数N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述第一UL资源调度参数为所述UE利用所述UL资源进行上行传输时所使用的每个UL子帧的配置参数;以及
    当所述UE成功竞争到信道接入机会时,利用所述UL资源调度信息所指示的UL资源进行上行传输,具体包括:
    当所述UE成功竞争到信道接入机会时,按照所述第一UL资源调度参数在从成功竞争到信道接入机会时起的N个UL子帧上进行上行传输。
  11. 如权利要求9所述的方法,其中,
    UE在第一子帧接收基站发送的UL资源调度信息,具体包括:
    接收所述基站发送的至少一条UL资源调度信息,且所述至少一条UL资源调度信息中的最后一条UL资源调度信息是在第一子帧接收的;其中,每条UL资源调度信息中包括:可调度子帧排列序号n、第二UL资源调度参数和可调度子帧总个数N;其中,所述N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述n表征所述UE在利用所述UL资源进行上行传输时,当前调度的UL子帧在可同时调度的N个UL子帧中的排列序号,所述n的取值范围为0至N-1,且所述n的取值按照所述UL资源调度信息的发送顺序依次递增;所述第二UL资源调度参数为在所述UE可同时调度的N个UL子帧中,所述n对应的UL子帧的配置参数;以及
    当所述UE成功竞争到信道接入机会时,利用所述UL资源调度信息所指示的UL资源进行上行传输,具体包括:
    当所述UE成功竞争到信道接入机会时,根据接收到的每条UL资源调度信息中所述n从小到大的顺序,依次使用与所述n对应的第二UL资源调 度参数,在从成功竞争到信道接入机会起的N个UL子帧上进行上行传输。
  12. 一种上行调度装置,包括:
    UL资源调度信息发送单元,用于在第一子帧向用户设备UE发送上行链路UL资源调度信息,以指示所述UE从第二子帧起开始竞争信道接入机会,并在成功竞争到信道接入机会时使用所述UL资源调度信息所指示的UL资源;其中,所述第一子帧和所述第二子帧之间存在第一时延;以及
    UL资源调度信息释放单元,用于从所述第二子帧起,当判断出所述UE利用所述UL资源进行上行传输,或者判断出所述UL资源调度信息失效时,释放所述UL资源调度信息所指示的UL资源。
  13. 如权利要求12所述的装置,其中,所述UL资源调度信息释放单元,具体用于:
    从所述第二子帧起,在所述UL资源调度信息所指示的UL资源上盲检是否存在所述UE发送的解调参考信号;当检测出存在所述解调参考信号时,确定所述UE利用所述UL资源进行上行传输,并释放所述UL资源调度信息所指示的UL资源;或者
    从所述第二子帧起,在所述UL资源调度信息所指示的UL资源上盲检是否存在所述UE的传输数据;当检测出存在所述传输数据时,确定所述UE利用所述UL资源进行上行传输,并释放所述UL资源调度信息所指示的UL资源;或者
    从所述第二子帧起,在所述UL资源调度信息所指示的UL资源上盲检是否存在所述UE发送的前导部分子帧;当检测出存在所述前导部分子帧时,确定所述UE利用所述UL资源进行上行传输,并释放所述UL资源调度信息所指示的UL资源。
  14. 如权利要求12所述的装置,其中,所述UL资源调度信息释放单元,具体用于:
    从第二子帧起判断所述UE在预先设置的时间段内是否利用所述UL资源进行上行传输;当判断出所述UE在预先设置的时间段内均没有利用所述UL资源进行上行传输时,确定所述UL资源调度信息失效,并释放所述UL资源调度信息所指示的UL资源;其中,所述时间段为所述第二子帧至第三子帧, 且所述第二子帧和所述第三子帧之间存在第二时延;或者
    从第二子帧起判断所述基站是否向所述UE发送资源失效信息;当判断出所述基站向所述UE发送资源失效信息时,确定所述UL资源调度信息失效,并释放所述UL资源调度信息所指示的UL资源;或者
    从第二子帧起判断所述基站是否向所述UE发送新的UL资源调度信息;其中,所述新的UL资源调度信息所指示的UL资源是所述基站重新为所述UE分配的;当判断出所述基站向所述UE发送新的UL资源调度信息,确定所述UL资源调度信息失效,并释放所述UL资源调度信息所指示的UL资源。
  15. 如权利要求12所述的装置,其中,所述UL资源调度信息在频域上的承载方式为下述方式中的任意一种:
    在所述基站的授权频段上承载;
    在与所述UL资源调度信息所指示的UL资源同频段的非授权频段上承载;以及
    在与所述UL资源调度信息所指示的UL资源不同频段的其它非授权频段上承载。
  16. 如权利要求12所述的装置,其中,所述UL资源调度信息发送单元,具体用于:
    在第一子帧向UE发送UL资源调度信息;其中,所述UL资源调度信息中包括:可调度子帧总个数N和第一UL资源调度参数;所述N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述第一UL资源调度参数为所述UE利用所述UL资源进行上行传输时所使用的每个UL子帧的配置参数。
  17. 如权利要求12所述的装置,其中,所述UL资源调度信息发送单元,具体用于:
    向UE发送至少一条UL资源调度信息,且所述至少一条UL资源调度信息中的最后一条UL资源调度信息是在第一子帧发送的;其中,每条UL资源调度信息中包括:可调度子帧排列序号n、第二UL资源调度参数和可调度子帧总个数N;其中,所述N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述n表征所述 UE在利用所述UL资源进行上行传输时,当前调度的UL子帧在可同时调度的N个UL子帧中的排列序号,所述n的取值范围为0至N-1,且所述n的取值按照所述UL资源调度信息的发送顺序依次递增;所述第二UL资源调度参数为在所述UE可同时调度的N个UL子帧中,所述n对应的UL子帧的配置参数。
  18. 一种上行调度装置,包括:
    UL资源调度信息接收单元,用于在第一子帧接收基站发送的上行链路UL资源调度信息;以及
    竞争单元,用于从第二子帧起开始竞争信道接入机会,直至成功竞争到信道接入机会或者所述UL资源调度信息所指示的UL资源失效;其中,所述第一子帧和所述第二子帧之间存在第一时延。
  19. 如权利要求18所述的装置,其中,所述竞争单元,具体用于:
    在从第二子帧开始竞争信道接入机会时,如果在预先设置的时间段内均没有成功竞争到信道接入机会,确定所述UL资源调度信息失效,并停止竞争信道接入机会;其中,所述时间段为所述第二子帧至第三子帧,所述第二子帧和所述第三子帧之间存在第二时延;或者
    在从第二子帧起开始竞争信道接入机会时,如果接收到所述基站发送的资源失效信息,确定所述UL资源调度信息失效,并停止竞争信道接入机会;或者
    在从第二子帧起开始竞争信道接入机会时,如果接收到所述基站发送的新的UL资源调度信息,确定所述UL资源调度信息失效,并停止竞争信道接入机会;其中,所述新的UL资源调度信息所指示的UL资源是所述基站重新为其分配的。
  20. 如权利要求18所述的装置,其中,所述装置还包括:
    传输单元,用于当成功竞争到信道接入机会时,利用所述UL资源调度信息所指示的UL资源进行上行传输。
  21. 如权利要求20所述的装置,其中,
    所述UL资源调度信息接收单元,具体用于:
    在第一子帧接收基站发送的UL资源调度信息;其中,所述UL资源调度信息中包括:可调度子帧总个数N和第一UL资源调度参数;所述可调度 子帧总个数N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述第一UL资源调度参数为所述UE利用所述UL资源进行上行传输时所使用的每个UL子帧的配置参数;以及
    所述传输单元,具体用于:
    当成功竞争到信道接入机会时,按照所述第一UL资源调度参数在从成功竞争到信道接入机会时起的N个UL子帧上进行上行传输。
  22. 如权利要求20所述的装置,其中,
    所述UL资源调度信息接收单元,具体用于:
    接收所述基站发送的至少一条UL资源调度信息,且所述至少一条UL资源调度信息中的最后一条UL资源调度信息是在第一子帧接收的;其中,每条UL资源调度信息中包括:可调度子帧排列序号n、第二UL资源调度参数和可调度子帧总个数N;其中,所述N表征所述UE在利用所述UL资源进行上行传输时,可以同时调度N个UL子帧,所述N为大于等于1的整数;所述n表征所述UE在利用所述UL资源进行上行传输时,当前调度的UL子帧在可同时调度的N个UL子帧中的排列序号,所述n的取值范围为0至N-1,且所述n的取值按照所述UL资源调度信息的发送顺序依次递增;所述第二UL资源调度参数为在所述UE可同时调度的N个UL子帧中,所述n对应的UL子帧的配置参数;以及
    所述传输单元,具体用于:
    当成功竞争到信道接入机会时,根据接收到的每条UL资源调度信息中所述n从小到大的顺序,依次使用与所述n对应的第二UL资源调度参数,在从成功竞争到信道接入机会起的N个UL子帧上进行上行传输。
  23. 一种基站设备,包括如权利要求12至17任一所述的上行调度装置。
  24. 一种用户设备,包括如权利要求18至22任一所述的上行调度装置。
  25. 一种上行调度***,包括:如权利要求23所述的基站和如权利要求24所述的用户设备。
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