WO2016119268A1 - 一种信号处理方法、用户设备及节点设备 - Google Patents

一种信号处理方法、用户设备及节点设备 Download PDF

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Publication number
WO2016119268A1
WO2016119268A1 PCT/CN2015/072064 CN2015072064W WO2016119268A1 WO 2016119268 A1 WO2016119268 A1 WO 2016119268A1 CN 2015072064 W CN2015072064 W CN 2015072064W WO 2016119268 A1 WO2016119268 A1 WO 2016119268A1
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WIPO (PCT)
Prior art keywords
user equipment
time
node
indication information
signal
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Application number
PCT/CN2015/072064
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English (en)
French (fr)
Inventor
李�远
李强
马莎
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201580044247.6A priority Critical patent/CN106664612B/zh
Priority to PCT/CN2015/072064 priority patent/WO2016119268A1/zh
Publication of WO2016119268A1 publication Critical patent/WO2016119268A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a signal processing method, a user equipment, and a node device.
  • CA Carrier Aggregation
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution-Advanced
  • LAA-LTE Licensed-Assisted Access Using LTE
  • PCC primary component carrier
  • SCC secondary component carrier
  • LAA-LTE performs data transmission on unlicensed spectrum, and faces co-channel interference from different operators and different wireless communication systems, such as co-channel interference of Wifi systems.
  • the LAA-LTE system usually adopts a Listen-Before-Talk (LBT) channel access mechanism, which requires the node to perform idle channel evaluation before transmitting the information ( Clear Channel Assessment (CCA), data transmission can only be performed when the channel is detected to be idle. This scenario is called successful preemption to the channel; otherwise, if the channel is detected, the signal is not sent until the next time. The CCA successfully seized the channel.
  • LBT Listen-Before-Talk
  • CCA Clear Channel Assessment
  • each node preempts The chances of the channel are reduced, and even the access node completely misses the channel.
  • AP1 and AP2 are in the listening range of each other and eNB0, respectively.
  • the user equipment (User Equipment, UE) 1 and the user equipment 2 are connected to the eNB0, the UE1 is closer to the AP1, the UE2 is closer to the AP2, and the AP1 and the AP2 adopt a random backoff mechanism. That is, it goes through a fallback window before the data is sent. When AP1 releases the channel, it cannot detect the AP2 sending data in the fallback window. Therefore, the data can continue to be sent after the counter of the fallback window is zeroed, as is AP2.
  • UE User Equipment
  • a "data transmission relay” may occur, that is, the channel release times of AP1 and AP2 are within each other's data transmission time range, when the loads of AP1 and AP2 are compared.
  • the channel is always occupied, so that it is completely impossible to preempt the channel.
  • the embodiment of the invention provides a signal processing method, a user equipment and a node device, so as to improve the chance that the node accessed by the user equipment successfully seizes the channel.
  • a user equipment comprising a receiver, a memory, a processor, and a transmitter, wherein:
  • the memory is configured to store program code executed by the processor
  • the processor is configured to receive the program stored in the memory, and receive, by the receiver, first indication information that is sent by the first node, where the first indication information is used to instruct the user equipment to send a fill signal, according to the receiving
  • the first indication information is sent to the idle channel evaluation, and in the case that the channel is idle, the transmitter is controlled to send a padding signal on the unlicensed spectrum carrier used by the first node.
  • the processor receives the first indication information on a licensed spectrum carrier by using the receiver.
  • the processor controls the transmitter to send a fill signal on a full bandwidth of an unlicensed spectrum carrier used by the first node .
  • the processor is further configured to:
  • the first node reports the detection result.
  • the processor is further configured to:
  • Second indication information that is sent by the first node, where the second indication information includes a first end time for indicating that the user equipment is expected to end sending a padding signal;
  • the user equipment sets a second end time to end the sending of the fill signal according to the first end time, and the second end time is not later than the first end time.
  • the processor is further configured to:
  • the processor is specifically configured to determine, according to the first end time, a idle channel evaluation start time of sending a fill signal according to the following manner:
  • the length of time between the first start time and the first end time is equal to the sum of the time length of one time slot in which the user equipment performs idle channel evaluation and the longest continuous channel occupation time of the user equipment;
  • the length of time between the second start time and the first end time is equal to a time length of a time slot in which the user equipment performs idle channel evaluation, and a time slot in which the first node performs idle channel evaluation. The sum of the lengths of time;
  • An idle channel evaluation start time is determined between the first start time and the second start time.
  • the second end time and the first end time is equal to the length of time of one time slot used by the first node for idle channel evaluation.
  • the processor is further configured to:
  • the receiver Receiving, by the receiver, third indication information that is sent by the first node, where the third indication information includes a time domain length for indicating that the user equipment continuously sends a padding signal; according to the third indication information
  • the length of the time domain included is configured to continuously transmit the time domain length of the fill signal.
  • the processor is further configured to:
  • the receiver And receiving, by the receiver, the fourth indication information sent by the first node, where the fourth indication information is used to indicate that the UE immediately ends the sending of the padding signal; according to the fourth indication information, stopping the idle channel evaluation or stopping sending Fill the signal.
  • a node device including a transmitter, a memory, and a processor, wherein:
  • the memory is configured to store program code executed by the processor
  • the processor is configured to invoke the program stored in the memory, determine the first indication information, and control the transmitter to send the first indication information to the user equipment, where the first indication information is used to indicate that the user equipment performs The idle channel is evaluated, and in the case where the channel is detected to be idle, the padding signal is transmitted on the unlicensed spectrum carrier used by the node device.
  • the processor is further configured to:
  • the user equipment Before transmitting the first indication information to the user equipment, receiving, by the user equipment, a detection result of performing energy detection on a wireless signal on a full bandwidth of the carrier on an unlicensed spectrum carrier that is monitored by the node device; Determining, according to the detection result, a user equipment that needs to receive the first indication information.
  • the processor is further configured to:
  • the transmitter controlling the transmitter to send the second indication information to the user equipment, where the second indication information includes a first end time for indicating that the user equipment is expected to end sending a padding signal.
  • the processor is further configured to:
  • the user equipment After the first end time, and in the case that the node device preempts the channel, the user equipment is scheduled.
  • the processor is further configured to:
  • the third indicator information is included in the third indication information, where the third indication information is included to indicate that the user equipment continuously sends a padding signal.
  • the processor is further configured to:
  • Detecting a start time of the user equipment to send the padding signal determining, according to the start time of the padding signal sent by the user equipment and the time domain length included in the third indication information, the time at which the user equipment stops sending the padding signal; After the time when the padding signal is stopped, and when the node device preempts the channel, the user equipment is scheduled.
  • the processor is further used to :
  • the processor is further configured to:
  • the user equipment After the fourth indicator information is sent by the transmitter, and the node device preempts the channel, the user equipment is scheduled.
  • a user equipment including:
  • a receiving unit configured to receive first indication information that is sent by the first node, where the first indication information is used to indicate that the user equipment sends a padding signal;
  • a sending unit configured to perform idle channel evaluation according to the first indication information received by the receiving unit, and send a padding signal on an unlicensed spectrum carrier used by the first node if a channel is detected to be idle .
  • the receiving unit receives the first indication information on a licensed spectrum carrier.
  • the sending unit sends a padding signal on a full bandwidth of the unlicensed spectrum carrier used by the first node.
  • the user equipment further includes a detecting unit and a reporting unit, where
  • the detecting unit is configured to perform energy detection on the wireless signal on the full bandwidth of the carrier on the unlicensed spectrum carrier that is detected by the first node before the receiving unit receives the first indication information sent by the first node, Obtaining a detection result for characterizing whether the first node sends the first indication information;
  • the reporting unit is configured to report the detection result obtained by the detecting unit to the first node.
  • the receiving unit is further configured to:
  • Second indication information includes a first end time for indicating that the user equipment is expected to end sending a padding signal
  • the user equipment further includes a setting unit, where
  • the setting unit is configured to set a second end time to end the sending of the fill signal according to the first end time received by the receiving unit, where the second end time is not later than the first end time.
  • the user equipment further includes a determining unit, where
  • the determining unit is configured to determine, according to the first end time in the second indication information received by the receiving unit, that the sending signal is idle before the sending unit performs the idle channel evaluation according to the first indication information. Channel evaluation start time.
  • the determining unit is specifically configured to determine, according to the first end time, the idle channel evaluation start time of sending the padding signal as follows:
  • the length of time between the first start time and the first end time is equal to the sum of the time length of one time slot in which the user equipment performs idle channel evaluation and the longest continuous channel occupation time of the user equipment;
  • the length of time between the second start time and the first end time is equal to a time length of a time slot in which the user equipment performs idle channel evaluation, and a time slot in which the first node performs idle channel evaluation. The sum of the lengths of time;
  • An idle channel evaluation start time is determined between the first start time and the second start time.
  • the second end time and the first end time is equal to the length of time of one time slot used by the first node for idle channel evaluation.
  • the receiving unit is further configured to:
  • the user equipment further includes a configuration unit, where
  • the configuration unit is configured to configure, according to the time domain length included in the third indication information, a time domain length for continuously transmitting the padding signal.
  • the receiving unit is further configured to:
  • a node device including:
  • a determining unit configured to determine first indication information, where the first indication information is used to indicate that the user equipment performs idle channel evaluation, and is sent on an unlicensed spectrum carrier used by the node device if the channel is idle Fill signal
  • a sending unit configured to send, to the user equipment, the first indication information that is determined by the determining unit.
  • the node device further includes a receiving unit, where
  • the receiving unit is configured to receive, by the user equipment, a detection result of performing energy detection on a wireless signal on a full bandwidth of the carrier on an unlicensed spectrum carrier that is monitored by the node device;
  • the determining unit is further configured to determine, according to the detection result received by the receiving unit, a user equipment that needs to receive the first indication information.
  • the sending unit is further configured to:
  • Second indication information includes a first end time for indicating that the user equipment is expected to end sending a padding signal.
  • the node device further includes a scheduling unit, where
  • the scheduling unit is configured to: after the first end time, and preempt the node device In the case of a channel, the user equipment is scheduled.
  • the sending unit is further configured to:
  • the third indication information is sent to the user equipment, where the third indication information includes a time domain length for indicating that the user equipment continuously sends the padding signal.
  • the node device further includes a detecting unit and a scheduling unit, where
  • the detecting unit is configured to detect a start time of the user equipment to send a fill signal
  • the determining unit is further configured to determine, according to a start time that the user equipment sends the padding signal and a time domain length included in the third indication information, a time when the user equipment stops sending the padding signal;
  • the scheduling unit is configured to schedule the user equipment after the time when the user equipment determined by the determining unit stops transmitting the padding signal and when the node device preempts the channel.
  • the sending unit is further used to:
  • the node device further includes a scheduling unit, where
  • the scheduling unit is configured to schedule the user equipment after the sending unit sends the fourth indication information, and if the node device preempts a channel.
  • a signal processing method including:
  • the user equipment receives the first indication information sent by the first node, where the first indication information is used to instruct the user equipment to send a padding signal;
  • the user equipment performs idle channel evaluation according to the first indication information, and sends a padding signal on the unlicensed spectrum carrier used by the first node if the channel is idle.
  • the user equipment is in a licensed spectrum
  • the first indication information is received on a carrier.
  • the user equipment sends a padding signal on a full bandwidth of the unlicensed spectrum carrier used by the first node.
  • the first implementation manner of the fifth aspect, or the second implementation manner of the fifth aspect, in the third implementation manner, before the user equipment receives the first indication information sent by the first node include:
  • the user equipment performs energy detection on the radio signal on the full bandwidth of the carrier on the unlicensed spectrum carrier that the first node is listening to, and obtains a detection result for indicating whether the first node sends the first indication information. ;
  • the user equipment reports the detection result to the first node.
  • the method further includes:
  • the user equipment Receiving, by the user equipment, second indication information that is sent by the first node, where the second indication information includes a first end time for indicating that the user equipment is expected to end sending a padding signal;
  • the user equipment sets a second end time to end the sending of the fill signal according to the first end time, and the second end time is not later than the first end time.
  • the method before the user equipment performs the idle channel evaluation according to the first indication information, the method further includes:
  • the user equipment determines, according to the first end time, an idle channel evaluation start time for sending a padding signal.
  • the user equipment determines, according to the first end time, an idle channel evaluation start time for sending a padding signal, including:
  • the length of time between the first start time and the first end time is equal to the length of time of one time slot in which the user equipment performs idle channel evaluation and the longest continuous channel of the user equipment.
  • the length of time between the second start time and the first end time is equal to a time length of a time slot in which the user equipment performs idle channel evaluation, and a time slot in which the first node performs idle channel evaluation. The sum of the lengths of time;
  • An idle channel evaluation start time is determined between the first start time and the second start time.
  • the second end time and the first end time is equal to the length of time of one time slot used by the first node for idle channel evaluation.
  • the method further includes:
  • the user equipment is configured to continuously send the time domain length of the padding signal according to the time domain length included in the third indication information.
  • the method further includes:
  • the user equipment stops performing idle channel evaluation or stops transmitting the padding signal according to the fourth indication information.
  • a signal processing method including:
  • first indication information is used to indicate that the user equipment performs idle channel evaluation, and if the channel is idle, the non-granting used by the first node is used.
  • the first node sends the first indication information to the user equipment.
  • the method before the first node sends the first indication information to the user equipment, the method further includes:
  • the first node receives, by the user equipment, a detection result of performing energy detection on a wireless signal on a full bandwidth of the carrier on an unlicensed spectrum carrier that is detected by the first node;
  • the first node determines, according to the detection result, a user equipment that needs to receive the first indication information.
  • the method further includes:
  • the first node sends the second indication information to the user equipment, where the second indication information includes a first end time for indicating that the user equipment is expected to end the sending of the padding signal.
  • the method further includes:
  • the first node schedules the user equipment.
  • the method further includes:
  • the first node sends third indication information to the user equipment, where the third indication information includes a time domain length for indicating that the user equipment continuously sends a padding signal.
  • the method further includes:
  • the first node schedules the user equipment.
  • the method further includes:
  • the first node sends fourth indication information to the user equipment, where the fourth indication information is used to indicate that the user equipment immediately ends sending a padding signal.
  • the method further includes:
  • the first node schedules the user equipment.
  • the signal processing method, the user equipment, and the node device provided by the embodiment of the present invention the first node that is accessed by the user equipment sends, to the user equipment, first indication information that is used to indicate that the user equipment sends a filling signal, and the user equipment is configured according to the first
  • the indication information is used for CCA, and if the channel is idle, the padding signal is sent on the unlicensed spectrum carrier used by the first node, so that the node that competes with the channel with the first node can perform energy detection of the idle channel evaluation.
  • FIG. 1 is a schematic diagram of a node that a user equipment accesses cannot be preempted to a channel in the prior art
  • FIG. 2 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a node device according to an embodiment of the present disclosure.
  • FIGS. 4A-4E are schematic diagrams showing the structure of another user equipment according to an embodiment of the present invention.
  • 5A-5D are schematic diagrams showing the structure of another node device according to an embodiment of the present invention.
  • 6A is a first flowchart of a signal processing method according to an embodiment of the present invention.
  • FIG. 6B is a schematic diagram of receiving first indication information for instructing a UE to send a padding signal according to an embodiment of the present disclosure
  • 6C is a schematic diagram of the UE transmitting a padding signal to enable the CN to perform energy detection of the CCA on the unlicensed spectrum carrier used by the first node to determine that the channel is occupied and retired to an idle state.
  • 6D is a schematic diagram of a process for implementing detection of a UE by performing energy detection and reporting to a first node according to an embodiment of the present invention
  • FIG. 6E is a timing diagram of the UE adopting the FBE policy, and the UE1 and the UE2 send a padding signal to assist the eNB0 to preempt the channel according to the embodiment of the present invention
  • 6F is a timing diagram of UE E and UE2 transmitting a padding signal to assist eNB0 to preempt a channel according to an embodiment of the present invention
  • 6G is a flowchart of a second implementation of a signal processing method according to an embodiment of the present invention.
  • 6H is a timing diagram of a UE using an FBE policy to end a transmission of a padding signal according to an embodiment of the present invention
  • 6I is a timing diagram of a UE using an LBE policy to end a transmission of a padding signal according to an embodiment of the present invention
  • 6J is another timing diagram of a UE using an FBE policy to end a transmission of a padding signal according to an embodiment of the present invention
  • FIG. 6K is another timing diagram of the UE adopting the LBE policy, and the UE ends transmitting the padding signal according to the embodiment of the present invention
  • 6L is still another flowchart of a signal processing method according to an embodiment of the present invention.
  • FIG. 6 is a timing diagram of determining a CCA start time in a case where a UE performs a listening and filling signal transmission in a UE using an FBE policy according to an embodiment of the present invention
  • FIG. 6 is a timing diagram of determining a CCA start time in a case where a UE performs a listening and filling signal transmission in an LBE policy according to an embodiment of the present invention
  • FIG. 6 is a flowchart of a third implementation of a signal processing method according to an embodiment of the present invention.
  • FIG. 6P is a schematic diagram of a process sequence of a UE performing a listening and filling signal transmission in a UE using an FBE policy according to an embodiment of the present invention
  • 6Q is a sequence diagram of a process in which a UE performs a listening and filling signal transmission in a UE using an LBE policy according to an embodiment of the present invention
  • 6R is a flowchart of a fourth implementation of a signal processing method according to an embodiment of the present invention.
  • FIG. 6 is a sequence diagram of a process in which a UE performs a snooping and filling signal transmission in a UE using an FBE policy according to an embodiment of the present invention
  • FIG. 6T is a schematic diagram of a sequence of a process in which a UE performs a listening and filling signal transmission in a UE using an LBE policy according to an embodiment of the present invention
  • FIG. 7 is a first flowchart of another signal processing method according to an embodiment of the present invention.
  • FIG. 7B is a second flowchart of another signal processing method according to an embodiment of the present invention.
  • FIG. 7C is a third flowchart of another signal processing method according to an embodiment of the present invention.
  • FIG. 7D is a fourth flowchart of another signal processing method according to an embodiment of the present invention.
  • FIG. 7E is a fifth flowchart of another signal processing method according to an embodiment of the present invention.
  • the signal processing method, the user equipment, and the node device provided by the embodiments of the present invention are applicable to a wireless communication system working on a licensed spectrum and an unlicensed spectrum, for example, an LAA-LTE system, and the present invention is particularly applicable to a scenario where different nodes coexist.
  • the coexistence of the transmitting nodes of different LAA-LTE operators, the LAA-LTE transmitting node (including a single LAA-LTE operator, and multiple LAA-LTE operators) and other wireless communication systems operating in the unlicensed spectrum coexist. .
  • a scenario in which a first node and a second node coexist is taken as an example.
  • the first node is a node accessed by the UE
  • the second node is a node that competes with the first node, for example, the second.
  • the node occupies the channel to transmit the signal, so that the received power exceeds the energy detection threshold when the first node performs CCA, thereby reducing the chance of the first node preempting the channel, and even the first node can not occupy the channel.
  • the second node may also be referred to as a competing node (CN), and the number of competing nodes may be one or more than one.
  • CN competing node
  • the first node and the second node may be a macro base station (Macro eNB), and the radio frequency Remote Radio Head (RRH), small base station (Pico eNodeB, Pico eNB), Home eNodeB (HeNB), Relay Node (RN), Access Point (AP), etc. .
  • RRH Remote Radio Head
  • small base station Pico eNodeB, Pico eNB
  • HeNB Home eNodeB
  • RN Relay Node
  • AP Access Point
  • the coexistence scenario shown in FIG. 1 is taken as an example.
  • the first node is eNB0
  • the second node is AP1 and AP2.
  • Both the AP1 and the AP2 are in the listening range of the eNB0, that is, the data is sent by any one of the AP1 and the AP2, and the eNB0 detects that the channel is occupied.
  • the opportunity for the eNB0 to successfully seize the channel can be improved.
  • the UE that is served by the eNB0 (the UE that accesses the eNB0) sends a padding signal to the UE that is closer to the second node.
  • FIG. 1 the application scenario shown in FIG.
  • the UE that is closer to the second node is the UE1 that is closer to the AP1.
  • the UE2 that is closer to the AP2 enables the AP1 and the AP2 to perform the energy detection of the CCA to determine that the channel is occupied, so that the AP1 and the AP2 are backed off to the idle state and release the channel, thereby improving the opportunity for the eNB0 to successfully seize the channel.
  • the embodiment of the present invention provides a user equipment 200.
  • the user equipment 200 provided by the embodiment of the present invention includes a receiver 201, a memory 202, a processor 203, and a transmitter 204.
  • the user equipment 200 provided in the example may further include a communication bus, which is not limited in the embodiment of the present invention.
  • a communication bus which is not limited in the embodiment of the present invention.
  • the memory 202 is configured to store program code executed by the processor 203.
  • the processor 203 is configured to invoke a program stored in the memory 202, and receive, by the receiver 201, first indication information that is sent by the first node, where the first indication information is used to instruct the user equipment to send a fill signal. And performing idle channel evaluation according to the received first indication information, and in case detecting that the channel is idle, controlling the transmitter 204 to send a padding signal on the unlicensed spectrum carrier used by the first node.
  • the processor 203 receives the first indication information on the licensed spectrum carrier by using the receiver 201.
  • the processor 203 controls the transmitter 204 to transmit a fill signal on the full bandwidth of the unlicensed spectrum carrier used by the first node.
  • the processor 203 is further configured to:
  • the first node reports the detection result.
  • the processor 203 is further configured to:
  • the second indication information sent by the first node is received by the receiver 201, where the second indication information includes a first end time for indicating that the user equipment is expected to end sending a padding signal.
  • the user equipment sets a second end time to end the sending of the fill signal according to the first end time, and the second end time is not later than the first end time.
  • the processor 203 is further configured to:
  • the processor 203 is specifically configured to determine, according to the first end time, the idle channel evaluation start time of sending the padding signal as follows:
  • the length of time between the first start time and the first end time is equal to the sum of the time length of one time slot in which the user equipment performs idle channel evaluation and the longest continuous channel occupation time of the user equipment.
  • the length of time between the second start time and the first end time is equal to a time length of a time slot in which the user equipment performs idle channel evaluation, and a time slot in which the first node performs idle channel evaluation. The sum of the length of time.
  • An idle channel evaluation start time is determined between the first start time and the second start time.
  • the time between the second end time and the first end time is equal to the length of time of one slot used by the first node for idle channel evaluation.
  • the processor 203 is further configured to:
  • third indication information that is sent by the first node, where the third indication information includes a time domain length for indicating that the user equipment continuously sends a padding signal. And configuring a time domain length for continuously transmitting the padding signal according to the time domain length included in the third indication information.
  • the processor 203 is further configured to:
  • the receiver 201 And receiving, by the receiver 201, fourth indication information that is sent by the first node, where the fourth indication information is used to indicate that the UE ends the sending of the padding signal. According to the fourth indication information, the idle channel evaluation is stopped or the padding signal is stopped.
  • the user equipment 200 of the embodiment of the present invention receives the first indication information that is sent by the first node that is accessed by the user equipment 200 to instruct the user equipment 200 to send a filling signal, and the user equipment 200 performs CCA according to the first indication information. And if the channel is idle, the padding signal is sent on the unlicensed spectrum carrier used by the first node, so that the node that competes with the channel with the first node performs the energy detection process of the idle channel evaluation, and detects The channel is occupied and retired to the idle state, and the channel is released, thereby improving the chance that the node accessed by the user equipment 200 successfully seizes the channel.
  • the embodiment of the present invention further provides a node device 300, including a transmitter 301, a memory 302, and a processor 303. As shown in FIG. 3, the node device 300 provided in the embodiment of the present invention may further include a communication bus.
  • the embodiment of the invention is not limited. In the embodiment of the invention:
  • the memory 302 is configured to store program code executed by the processor 303.
  • the processor 303 is configured to invoke a program stored in the memory 302, determine first indication information, and control the transmitter 301 to send the first indication information to the user equipment, where the first indication information is used to indicate
  • the user equipment performs idle channel evaluation and, upon detecting that the channel is idle, transmits a padding signal on the unlicensed spectrum carrier used by the node device 300.
  • the processor 303 is further configured to:
  • the node device 300 Before transmitting the first indication information to the user equipment, receiving, by the user equipment, the energy of the wireless signal on the full bandwidth of the carrier on the unlicensed spectrum carrier that is monitored by the node device 300 Test results of the test. The node device 300 determines, according to the detection result, a user equipment that needs to receive the first indication information.
  • the processor 303 is further configured to:
  • the transmitter 301 is configured to send second indication information to the user equipment, where the second indication information includes a first end time for indicating that the user equipment is expected to end sending a padding signal.
  • the processor 303 is further configured to:
  • the node device 300 schedules the user equipment.
  • the processor 303 is further configured to:
  • the transmitter 301 is configured to send third indication information to the user equipment, where the third indication information includes a time domain length for indicating that the user equipment continuously sends a padding signal.
  • the processor 303 is further configured to:
  • Detecting a start time at which the user equipment sends the padding signal determining, according to the start time of the padding signal sent by the user equipment and the time domain length included in the third indication information, the time at which the user equipment stops sending the padding signal, where the determined user equipment is determined After the time when the padding signal is stopped, and when the node device 300 preempts the channel, the user equipment is scheduled.
  • the processor 303 is further configured to:
  • the transmitter 301 is configured to send fourth indication information to the user equipment, where the fourth indication information is used to indicate that the user equipment immediately ends sending a padding signal.
  • the processor 303 is further configured to:
  • the user equipment After controlling the transmitter 301 to send the fourth indication information, and in the case that the node device 300 preempts the channel, the user equipment is scheduled.
  • the node device 300 sends first indication information for instructing the user equipment to send a padding signal to the user equipment, where the user equipment performs CCA according to the first indication information, and in the case that the channel is idle,
  • the padding signal is sent on the unlicensed spectrum carrier used by the node device 300. Therefore, during the energy detection process in which the node that competes with the node device 300 performs the idle channel evaluation, it is detected that the channel is occupied and retired to the idle state, and the channel is released. , improve user settings
  • the standby access node successfully seizes the opportunity of the channel.
  • the memory involved in the foregoing embodiment of the present invention may be a read-only memory (English: read-only memory; abbreviated as: ROM), a random access memory (English: random access memory; abbreviation: RAM), It can be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic disk storage medium or other magnetic storage device, or can be used to carry or store a desired form of instruction or data structure.
  • ROM read-only memory
  • RAM random access memory
  • EEPROM Electrically Erasable Programmable Read-Only Memory
  • magnetic disk storage medium or other magnetic storage device or can be used to carry or store a desired form of instruction or data structure.
  • the program code and any other medium that can be accessed by the computer but is not limited thereto, for example, the memory may be a combination of the above memories.
  • the processor involved in the embodiment of the present invention may be a general-purpose central processing unit.
  • FIG. 4A is a schematic diagram of a configuration of a user equipment 400 according to an embodiment of the present invention.
  • the user equipment 400 includes a receiving unit 401 and a sending unit 402, where:
  • the receiving unit 401 is configured to receive first indication information that is sent by the first node, where the first indication information is used to instruct the user equipment to send a padding signal.
  • the sending unit 402 is configured to perform idle channel evaluation according to the first indication information received by the receiving unit 401, and send, on the unlicensed spectrum carrier used by the first node, when detecting that the channel is idle. Fill the signal.
  • the receiving unit 401 receives the first indication information on a licensed spectrum carrier.
  • the sending unit 402 sends a padding signal on the full bandwidth of the unlicensed spectrum carrier used by the first node.
  • the user equipment further includes a detecting unit 403 and a reporting unit 404, as shown in FIG. 4B, where
  • the detecting unit 403 is configured to perform energy on the wireless signal on the full bandwidth of the carrier on the unlicensed spectrum carrier that the first node listens before the receiving unit 401 receives the first indication information sent by the first node. Detecting, obtaining a detection result for characterizing whether the first node sends the first indication information.
  • the reporting unit 404 is configured to report the detection result obtained by the detecting unit 403 to the first node.
  • the receiving unit 401 is further configured to:
  • the first node And receiving, by the first node, second indication information, where the second indication information includes a first end time for indicating that the user equipment is expected to end sending a padding signal.
  • the user equipment further includes a setting unit 405, as shown in FIG. 4C, where
  • the setting unit 405 is configured to set a second end time to end the sending of the fill signal according to the first end time received by the receiving unit 401, where the second end time is not later than the first end time.
  • the user equipment further includes a determining unit 406, as shown in FIG. 4D, where:
  • the determining unit 406 is configured to determine, according to the first end time in the second indication information received by the receiving unit 401, the sending padding before the sending unit 402 performs the idle channel evaluation according to the first indication information.
  • the idle channel of the signal is evaluated at the start time.
  • the determining unit 406 is specifically configured to determine, according to the first end time, the idle channel evaluation start time of sending the padding signal as follows:
  • the length of time between the first start time and the first end time is equal to the sum of the time length of one time slot in which the user equipment performs idle channel evaluation and the longest continuous channel occupation time of the user equipment.
  • the length of time between the second start time and the first end time is equal to a time length of a time slot in which the user equipment performs idle channel evaluation, and a time slot in which the first node performs idle channel evaluation. The sum of the length of time.
  • An idle channel evaluation start time is determined between the first start time and the second start time.
  • a length of time between the second end time and the first end time is equal to a time length of a time slot used by the first node to perform idle channel evaluation.
  • the receiving unit 401 is further configured to:
  • the third indication information includes a time domain length for indicating that the user equipment continuously sends the padding signal.
  • the user equipment further includes a configuration unit 407, as shown in FIG. 4E, where
  • the configuration unit 407 is configured to configure, according to the time domain length included in the third indication information, a time domain length for continuously transmitting the padding signal.
  • the receiving unit 401 is further configured to:
  • the user equipment 400 receives the first indication information that is sent by the first node that is accessed by the user equipment 400, and is used to indicate that the user equipment 400 sends a filling signal, and the user equipment 400 performs CCA according to the first indication information. And if the channel is idle, the padding signal is sent on the unlicensed spectrum carrier used by the first node, so that the node that competes with the channel with the first node performs the energy detection process of the idle channel evaluation, and detects The channel is occupied and retired to an idle state, and the channel is released, thereby improving the chance that the node accessed by the user equipment 400 successfully seizes the channel.
  • FIG. 5A is a schematic diagram of a configuration of a node device 500 according to an embodiment of the present invention.
  • the node device 500 includes a determining unit 501 and a sending unit 502. As shown in 5A:
  • the determining unit 501 is configured to determine first indication information, where the first indication information is used to indicate that the user equipment performs idle channel evaluation, and in the case that the channel is idle, the unlicensed spectrum carrier used by the node device 500 is detected.
  • the fill signal is sent on.
  • the sending unit 502 is configured to send, by the user equipment, the first indication information that is determined by the determining unit 501.
  • the node device 500 further includes a receiving unit 503, as shown in FIG. 5B, where
  • the receiving unit 503 is configured to receive, by the user equipment, a detection result of performing energy detection on a wireless signal on a full bandwidth of the carrier on an unlicensed spectrum carrier that is monitored by the node device 500.
  • the determining unit 501 is further configured to determine, according to the detection result received by the receiving unit 503, a user equipment that needs to receive the first indication information.
  • the sending unit 502 is further configured to:
  • Second indication information includes a first end time for indicating that the user equipment is expected to end sending a padding signal.
  • the node device 500 further includes a scheduling unit 504, as shown in FIG. 5C, where
  • the scheduling unit 504 is configured to schedule the user equipment after the first end time and when the node device 500 preempts the channel.
  • the sending unit 502 is further configured to:
  • the third indication information is sent to the user equipment, where the third indication information includes a time domain length for indicating that the user equipment continuously sends the padding signal.
  • the node device 500 further includes a detecting unit 505 and a scheduling unit 504, as shown in FIG. 5D, where
  • the detecting unit 505 is configured to detect a starting moment when the user equipment sends the padding signal.
  • the determining unit 501 is further configured to determine, according to a start time that the user equipment sends the padding signal and a time domain length included in the third indication information, a time at which the user equipment stops sending the padding signal.
  • the scheduling unit 504 is configured to schedule the user equipment after the time when the user equipment determined by the determining unit 501 stops transmitting the padding signal and before the node device 500 preempts the channel.
  • the sending unit 502 is further configured to:
  • the node device 500 further includes a scheduling unit 504, as shown in FIG. 5C, where
  • the scheduling unit 504 is configured to schedule the user equipment after the sending, by the sending unit 502, the fourth indication information, and when the node device 500 preempts the channel.
  • the node device 500 sends first indication information for instructing the user equipment to send a padding signal to the user equipment, where the user equipment performs CCA according to the first indication information, and in the case that the channel is idle,
  • the padding signal is sent on the unlicensed spectrum carrier used by the node device 500. Therefore, during the energy detection process in which the node that competes with the node device 500 performs the idle channel evaluation, it is detected that the channel is occupied and retired to the idle state, and the channel is released. The opportunity for the node accessed by the user equipment to successfully seize the channel is improved.
  • the present invention provides a detailed description of the signal processing method provided by the embodiment of the present invention.
  • FIG. 6A is a flowchart of a signal processing method according to an embodiment of the present invention.
  • the method shown in FIG. 6A is a UE, as shown in FIG. 6A, and includes:
  • the UE receives the first indication information sent by the first node.
  • the first indication information sent by the first node in the embodiment of the present invention is used to instruct the UE to send a padding signal.
  • the UE receiving the first indication information in the embodiment of the present invention accesses the first node and is closer to the geographic location of the CN (second node), and can transmit the filling signal with a smaller transmitting power to make the CN pass the energy of the CCA.
  • Detecting detecting that the channel is occupied and retiring to an idle state, and reducing the influence of the UE on the energy detection of the CCA during the preemption of the channel by the first node
  • FIG. 6B is a first indication for receiving the indication that the UE sends the padding signal.
  • Schematic diagram of the information, UE1 and UE2 in FIG. 6B are UEs that receive the first indication information.
  • S102 The UE performs CCA according to the first indication information, and sends a padding signal on the unlicensed spectrum carrier used by the first node if the channel is detected to be idle.
  • the padding signal involved in the embodiment of the present invention has a power value that enables the CN around the UE to perform energy detection of the CCA on the unlicensed spectrum carrier used by the first node to continuously exceed the set threshold.
  • the UE sends a padding signal, and the CN around the UE performs the energy value of the CCA energy detection on the unlicensed spectrum carrier used by the first node, and the power value of the CCA continues to exceed the set threshold.
  • the idle signal sent by the UE in the embodiment of the present invention can assist the first node to occupy the channel on the unlicensed spectrum carrier used by the first node.
  • FIG. 6C is a schematic diagram of the UE sending a padding signal to enable the CN to perform CCA energy detection on the unlicensed spectrum carrier used by the first node to determine that the channel is occupied and retired to an idle state.
  • the padding signal sent by the UE in the embodiment of the present invention may be, for example, a pilot signal that does not carry data information, a random signal that includes pilot information, or a random signal that does not carry data information, that is, the filling signal of the UE may be randomly generated.
  • the signal may also include pilot information in the random signal, or all of the pilot signals, so that the first node can learn the start time of the filling signal sent by the UE by detecting the pilot signal.
  • the embodiment of the present invention does not limit the specific implementation form of the padding signal. Any CN that enables the CN to be closer to the geographical position of the UE to perform CCA energy detection determines that the channel is occupied and retreats to an idle state, thereby releasing the channel and improving the UE.
  • the signal that the access node (the first node) preempts the channel opportunity can be used as the padding signal involved in the embodiment of the present invention.
  • the first node that is accessed by the UE is backed off, or the transmit power is too small to effectively make the CN backoff closer to the UE, and the UE may be on the licensed spectrum carrier or the unlicensed spectrum carrier.
  • the UE performs the filling signal transmission on the unlicensed spectrum carrier used by the first node, and receives the first indication information sent by the first node on the licensed spectrum carrier or the unlicensed spectrum carrier, and other Control signaling.
  • the UE may receive the first indication information sent by the first node on the licensed spectrum carrier, that is, the first node may send the first indication information on the licensed spectrum carrier.
  • the UE may perform CCA detection on the unlicensed spectrum carrier, and in the case that the channel is idle, A fill signal is sent over the full bandwidth of the carrier used by a node.
  • the UE detects the channel through the CCA in the LBT channel access mechanism.
  • the padding signal can be sent without the need for uplink synchronization.
  • the UE that receives the first indication information and sends the padding signal is generally a UE that is closer to the CN.
  • the receiving power of the UE that is closer to the CN is generally larger.
  • the UE may perform energy detection on the wireless signal on the full bandwidth of the carrier on the unlicensed spectrum carrier that is detected by the first node, before receiving the first indication information sent by the first node, to obtain the identifier for Whether a node sends the detection result of the first indication information, and reports the obtained detection result to the first node, and the first node sends the first indication information to the UE according to the detection result reported by the UE, and the implementation process is as shown in FIG. 6D.
  • the UE performs energy detection on the radio signal on the full bandwidth of the carrier on the unlicensed spectrum carrier that is detected by the first node, and obtains a detection result used to indicate whether the first node sends the first indication information.
  • the UE may detect the total energy of the wireless signal on the full bandwidth of the carrier in the energy detection time window when the first node accessed by the UE is in an idle state, without detecting a single node in a resource block (Resource Block) Receiver power on RB).
  • Resource Block Resource Block
  • the detection result of the first node indicating whether the first node sends the first indication information may be that the energy of the detected full bandwidth of the carrier is quantized into an energy level, or may directly indicate whether to send the padding signal. Request information.
  • the UE may quantize the energy of the detected full bandwidth of the carrier into an energy level as a detection result, and report it to the first node, so that the first node determines whether it needs to send the first to the UE according to the received energy level. Instructions.
  • the UE may further obtain the request information of whether the padding signal needs to be sent according to the energy of the detected full bandwidth of the carrier, and directly report the request information to the first node.
  • the UE may report the obtained detection result to the first node by using a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH).
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • the first node sends the first indication information to the UE according to the detection result reported by the UE, where the indication is The UE sends a padding signal.
  • the first node when the detection result is that the first node needs to send the first indication information, the first node sends the first indication information to the UE, and instructs the UE to send the padding signal.
  • the first node may carry the first indication information on the control channel of the licensed spectrum carrier, for example, on the physical downlink control channel (PDCCH), compared to the request to send (Request To Send, RTS). ) or Clear To Send (CTS) mechanism, which does not require additional RTS/CTS signaling design to solve the problem that the first node cannot seize the channel.
  • PDCCH physical downlink control channel
  • RTS Request To Send
  • CTS Clear To Send
  • S204 The UE sends a padding signal according to the first indication information.
  • the UE performs energy detection on the wireless signal on the full bandwidth of the carrier on the unlicensed spectrum carrier used by the first node, which can accurately reflect the influence of the UE on the surrounding CN transmitting signal, and does not need to detect the first node.
  • the transmitted pilot signal After the transmitted pilot signal is used for energy detection, it can be continuously executed.
  • whether the first node sends the first indication information may be determined by the first node itself according to actual conditions, for example, the first node performs CCA detection every time for a long time, for example, 100 ms. If the channel is occupied, the first indication information may be sent to the accessed UE, and the UE is instructed to send a padding signal.
  • the LBT channel access mechanism includes two types of listening strategies: FBE (Frame Based Equipment) and Load Based Equipment (LBE), where the FBE policy requires that the interception-send obeys a fixed frame structure.
  • FBE Framework Based Equipment
  • LBE Load Based Equipment
  • the CCA detects that the channel is occupied, it does not send information in the next frame period; and the LBE specifies a fallback mechanism, and the CCA detects that the channel is occupied and enters a fallback window.
  • the embodiment of the present invention further illustrates the FBE policy and the LBE policy in the scenario shown in FIG. 1 .
  • a fixed frame period includes a Channel Occupancy Time (COT) and an Idle Period (IDP), wherein the idle time length is at least a channel.
  • COT Channel Occupancy Time
  • IDP Idle Period
  • the CCA detection is located at the end of the IDP, and the time length of one time slot of the CCA is as short as 20 ⁇ s.
  • the eNB adopts the FBE policy to perform channel sounding in the CCA time slot.
  • the CCA detects that the channel is occupied, it does not send traffic during the channel occupation time of the next frame period, and vice versa.
  • the idle time is entered after the end of the channel occupancy time, and the next listening is performed at the CCA at the end of the IDP.
  • the OT length of the eNB usually takes a large value, for example, 5 ms or 10 ms, and is set to 5 ms here.
  • the UE adopts the FBE policy.
  • the COT time is required to be between 1ms and 10ms. Therefore, the fixed frame length of the UE needs to be greater than 1ms.
  • 6E is a timing diagram of the UE adopting the FBE policy, and the UE1 and the UE2 send a padding signal to assist the eNB0 to preempt the channel.
  • UE1 and UE2 perform CCA after receiving the first indication message sent by eNB0, where UE2 detects that the channel is idle, and therefore sends a padding signal at the COT, and performs CCA after the end of the current fixed frame and detects idle.
  • the UE continues to send the padding signal; UE1 detects that the channel is occupied without transmitting at the first CCA, and sends a padding signal at the COT after the second CCA detects that the channel is idle; eNB0 detects a CCA after the padding signal transmission indication The channel is idle and occupies the channel; when the CCA of eNB0 ends, UE1 and UE2 stop transmitting the padding signal, and start detecting the information transmitted by eNB0 on the next subframe.
  • a random fallback mechanism is implemented.
  • the CCA detects that the channel is occupied or the eNB ends the channel occupation, it will enter an extended CCA (ECCA), and its counter is initialized to a random integer between 1 and q, where q takes a value between 4 and 32, and performs channel interception once per CCA slot. If the channel is detected to be idle, the counter is decremented by one and enters the next CCA slot until the ECCA counter is zeroed and then the channel is occupied.
  • the maximum duration of continuous channel occupation is (13/32)*qms.
  • the eNB needs to send a reservation between the counter zero return time and the next subframe boundary.
  • a signal (such as a fill signal or a Preamble signal) to prevent the channel from being circulated by other nodes during this time.
  • the transmission duration of the UE can be set to 2 ms, and the transmission duration of eNB0 is set to 13 ms.
  • 6F is a timing diagram of the UE adopting the LBE policy, and the UE1 and the UE2 send a padding signal to assist the eNB0 to preempt the channel.
  • UE1 and UE2 after receiving the filling signal transmission indication, UE1 and UE2 perform CCA immediately, and after detecting that the channel is occupied, enter the ECCA, until the counter is zeroed, occupying the channel to send the padding signal, and after the ECCA of eNB0 is zeroed, UE1 and UE2 Stop transmitting the padding signal and start detecting the information transmitted by eNB0 on the next subframe.
  • the first node accessed by the UE sends the first indication information for instructing the UE to send the padding signal to the UE, performs CCA, and detects that the channel is idle,
  • the padding signal is sent on the unlicensed spectrum carrier used by the first node, so that the node that competes with the channel with the first node performs the energy detection process of the CCA, detects that the channel is occupied, and retreats to the idle state, and releases the channel, thereby improving
  • the first node accessed by the UE successfully seizes the opportunity of the channel.
  • the first node accessed by the UE may be scheduled to the UE that currently sends the padding signal, and the UE cannot simultaneously receive and transmit signals on the same spectrum, so when the first node accessed by the UE preempts the channel and When transmitting useful data information, the UE needs to stop transmitting the padding signal and switch to receiving the data information.
  • a simple implementation method is that the first node accessed by the UE sends a padding signal end time indication to the UE in advance, for example, indicating the subframe number to be stopped.
  • the padding signal end time indication includes, but is not limited to, a subframe number of a next data subframe that the user equipment needs to receive on the unlicensed spectrum.
  • the foregoing implementation manner of the embodiment of the present invention further includes the following steps: the UE receives, by the first node, a first end that is sent by the first node and is used to indicate that the UE is expected to end the sending of the padding signal.
  • the second indication information of the time and according to the first end time included in the second indication information, setting the second end time not later than the first end time, the UE does not perform the filling signal transmission after the second end time until the next
  • the first indication message is received at a time.
  • the embodiment of the present invention is exemplified by taking the embodiment shown in FIG. 6D as an example, and is specifically implemented. As shown in FIG. 6G, the following steps are further included on the basis of FIG. 6D:
  • the UE receives the second indication information that is sent by the first node, where the second indication information includes a first end time that is used to indicate that the UE is expected to end sending the padding signal.
  • the second indication information sent by the first node in the embodiment of the present invention may be sent to the UE together with the first indication information, for example, by sending the licensed spectrum carrier to the UE.
  • the first end time included in the second indication information in the embodiment of the present invention may be an end subframe number that the UE is expected to end the transmission of the padding signal, but is not limited thereto.
  • the authorized spectrum and the unlicensed spectrum of the same access node may be synchronized or unsynchronized.
  • the end number of the padding signal received by the UE from the licensed spectrum carrier may be directly used to indicate the non-synchronization.
  • the end of the signal is filled in the licensed spectrum; in the case of non-synchronization, the UE also needs to obtain the offset value of the unlicensed spectrum carrier compared to the licensed spectrum carrier, and the UE may receive the semi-static form on the licensed spectrum carrier. Move the value.
  • S206 The UE sets a second end time for ending the sending of the padding signal according to the first end time, where the second end time is not later than the first end time.
  • step numbers in the respective illustrations of the embodiments of the present invention are only for convenience of description, and do not limit the order of execution.
  • the execution order of S205 and S206 is not limited to be performed after S204, and S205 may be performed at S204. Executing before, for example, may also be performed before S203 or in synchronization with S203.
  • the first end time included in the second indication information is used as the end subframe number as an example.
  • the UE may set the second end of the need to end the transmission of the fill signal according to the end subframe number in the second indication information.
  • the embodiment of the present invention is illustrated by the scenario shown in FIG. 1 , where the second end time is an end subframe boundary indicated by the second indication information.
  • FIG. 6H is a timing diagram of the UE adopting the FBE policy, and the UE ends the sending of the padding signal.
  • FIG. 6I is a timing diagram of the UE adopting the LBE policy, and the UE ends the transmission of the padding signal. As shown in FIG. 6H and FIG.
  • the UE if the eNB0 preempts the channel in the end subframe, the next subframe after the channel is preempted (that is, the next time the UE needs to receive data)
  • the data subframes are scheduled for the UE; the UE stops transmitting the padding signal at the end boundary of the end subframe, and starts detecting the synchronization signal, the pilot signal and the control channel of the eNB0 at the start boundary of the next subframe.
  • the uncompleted LBT transmission, interception, or idle process is not performed, and even if the UE1 does not reach the maximum transmission time at the end boundary, the padding signal, IDP, and CCA; and the process of the next interception and padding signal transmission is no longer continued until the next first indication message is received to send a padding signal.
  • FIG. 6H and FIG. 6I are schematic diagrams of a process for the UE to perform a listening and filling signal transmission.
  • it is also possible to perform more than one listening and filling signal transmission and then stop sending the filling signal as shown in FIG. 6J and FIG. Shown in 6K.
  • the time when the UE sends the padding signal to occupy the channel or the chance of success is usually relatively large. Therefore, the effect of the UE assisting the UE to access the channel is more obvious, but the impact on the surrounding CN node is more significant. Large, more suitable for the case where the access node has been unable to seize the channel for a long time.
  • the first end time that the first node sends to the UE in the embodiment of the present invention is the time at which the first node is expected to preempt the channel and is notified to the UE in advance, and the second end time of the end of the sending of the padding signal set by the UE is not later than At the first end time, the first node may preempt the channel earlier than the second end time, or the first node may not preempt the channel at the second end time.
  • the first node may continue to send the first indication information indication to the UE by using the licensed spectrum carrier in the next subframe after the second end time.
  • the UE sends a padding signal to notify the UE to continue to assist in channel preemption. If the UE does not detect the synchronization signal in the next subframe at the second end time, it is determined that the first node does not preempt the channel, so that the channel detection does not need to be continued.
  • the first node in order to solve the problem that the first node preempts the channel and starts to transmit data earlier than the second end time, the first node may not schedule the UE at the second end time, because the UE still sends the padding at the second end time.
  • the signal can be scheduled after the UE stops transmitting the padding signal.
  • the access node Compared with the FBE policy, the location of the access node preempting the channel is random, and the preemption of the channel is more likely to occur in the LBE policy. Therefore, the access node according to the embodiment of the present invention sends an end to the UE to end the transmission of the padding signal.
  • the method of time indication is more suitable for the FBE strategy, the embodiment of the present invention
  • the access node may set the first end time of the expected end to send the padding signal to a time domain position that is closer to the current time, for example, the first end time.
  • the FBE-based channel access mechanism because the access node performs the process of intercepting and transmitting, has a fixed frame structure, and always performs CCA listening at the end of the IDP. Therefore, the UE should adjust the CCA start time before sending the padding signal, and try to ensure During the time when the access node performs the CCA, the channel is still occupied by the padding signal of the UE, that is, the CN is still in the back-off state. Therefore, the embodiment of the present invention implements the method for sending the end signal indicating that the padding signal is sent to the UE based on the access node. The following steps may also be included on the basis of the example, as shown in FIG. 6L:
  • S207 The UE determines, according to the first end time, a CCA start time for sending the padding signal.
  • the CCA start time for determining that the UE sends the padding signal may be as follows:
  • a first start time according to the first end time, a time length of one time slot of the CCA performed by the user equipment, and a longest continuous channel occupation time of the user equipment; the first start time and the first time
  • the length of time between the end times is equal to the sum of the length of time for one slot of the CCA performed by the UE and the longest duration of channel occupancy of the UE.
  • a second start time Determining a second start time according to the first end time, a length of time in which the user equipment performs one time slot of the CCA, and a time length in which the first node performs one time slot of the CCA; the second start time
  • the length of time between the time and the first end time is equal to the sum of the time length of one time slot in which the UE performs CCA and the time length of one time slot in which the first node performs CCA.
  • determining the CCA start time of the UE to send the padding signal is not limited to the foregoing determining manner, for example, the following manner may also be adopted:
  • the length of time is equal to the sum of the UE performing the average listening time length of the ECCA and the longest continuous channel occupation time of the UE.
  • the length of time between the moments is equal to the sum of the length of time that the UE performs the ECCA average listening time and the length of time that the first node performs one slot of the CCA.
  • the first end time included in the second indication information is an end subframe number as an example, and the UE needs to end according to the end subframe number setting in the second indication information.
  • the second end time of the transmission padding signal is an example of the end subframe boundary indicated in the second indication information.
  • the UE listening time is fixed to the length of one time slot of one CCA, and the longest time occupied by the continuous channel is the COT time.
  • the shortest possible listening duration of the UE is also the length of one slot of a CCA.
  • the longest channel occupation time is (13/32)*q ms, that is, FBE and Under the LBE policy, the longest continuous channel occupation time of the UE is determined.
  • the earliest start time and the latest start time of the CCA of the UE may be determined, and the earliest start time is the first start time in the embodiment of the present invention, and the latest start time is the second time in the embodiment of the present invention.
  • the start time wherein the time between the earliest start time and the end time of the end of the end of the subframe is the sum of the time length of one time slot of the CCA of the UE and the longest continuous channel occupation time of the UE, and the latest start time to the end
  • the time between the end time of the subframe end boundary is the sum of the time length of one time slot of the CCA of the UE and the time length of one time slot of the CCA of the first node, as shown in the figure 6M and 6N are respectively shown in the FBE policy and the LBE policy, and the UE performs a timing sequence of determining the CCA start time in the case of a listening and filling signal transmission.
  • the latest CCA start time of the UE is the same as the single transmission process, and the time until the end of the end subframe end boundary time is one time of the CCA of the UE.
  • the sum of the time length of the slot and the time length of one slot of the CCA of the first node; based on the FBE policy, the time from the earliest start time of the UE to the end of the end of the subframe is the sum of times of multiple CCAs and COTs, Based on the LBE policy, the time from the earliest start time of the CCA of the UE to the end of the end of the subframe may be set to the sum of the times of multiple CCAs and the longest duration of the channel.
  • the CCA start time of the UE is set between the first start time and the second start time, and the time length between the first start time and the first end time is equal to one time slot that the UE performs CCA.
  • a length of time between the second start time and the first end time equal to a length of time that the UE performs a time slot of the CCA and the The first node performs the sum of the time lengths of one time slot of the CCA, so that the access node can still occupy the channel by the UE's padding signal during the time when the CCA is executed, that is, the CN is still in the back-off state, and the access is improved.
  • the node preempts the chance of success of the channel, and the present invention can also prevent the padding signal from ending over the end boundary of the end subframe due to the limitation of the longest channel occupation time, and the CN around the UE may be after the UE finishes transmitting the padding signal.
  • the situation of preempting the channel during the segment time occurs.
  • the UE may stop sending the padding signal a short time before the end boundary of the end subframe, which is equal to the access node.
  • the length of time of one slot used for CCA that is, the length of time between the second end time and the first end time, is equal to the length of time of one slot used by the first node for CCA.
  • the length of time between the second end time and the first end time is equal to the time length of one time slot used by the first node CCA, so that the first node does not detect the current cell when performing CCA.
  • the interference energy of the UE can also make the transmit power of the UE transmitting the fill signal unrestricted, and can use more transmission power to make more CNs back off, so that the first node detects The interference energy is lower.
  • the average listening duration of the Wifi is short (the initial back-off window is 1 to 15 Wifi slots, the length of one slot of the Wifi performing CCA in the 20 MHz bandwidth is 9 ⁇ s, that is, the shortest listening duration is 9 ⁇ s) Therefore, in the CCA listening time, there may be a situation in which the AP occupies the channel earlier, so that the first node detects that the channel is busy. Therefore, the shortest time slot length of the CCA of the first node in the embodiment of the present invention is 20 ⁇ s. The probability that the remaining back-off window length of the CN node is within this range is reduced.
  • the first node in order to solve the problem that the UE fails to successfully occupy the channel at the second end time, the first node is used after the second end time.
  • the next subframe continues to send the first indication information to the UE by the licensed spectrum carrier to instruct the UE to send the padding signal, and the UE is notified to continue to assist in the channel preemption manner, which may cause the signaling overhead to be excessive to some extent.
  • the UE may perform the process of detecting and sending the padding signal immediately after receiving the indication by sending the UE with the time domain length indicating that the user equipment continues to send the padding signal. After the channel is preempted, the padding is continuously sent.
  • the signal is up to the length of the time domain indicated by the first node, so that the first node instructs the UE to send the padding signal by sending the first indication information once, so that the UE can surely issue a padding signal, that is, as shown in FIG. 1 or FIG.
  • the embodiment further includes the following steps: the UE receives the third indication information sent by the first node, where the third indication The information includes a time domain length for indicating that the user equipment continuously sends a padding signal, and the UE configures a time domain length for continuously transmitting the padding signal according to the time domain length included in the third indication information.
  • FIG. 6D The embodiment of the present invention is exemplified by taking the embodiment shown in FIG. 6D as an example.
  • the specific implementation process is as shown in FIG. 6O, that is, the following steps are further included on the basis of FIG. 6D:
  • the UE receives the third indication information that is sent by the first node, where the third indication information includes a time domain length used to indicate that the UE continues to send the padding signal.
  • the UE configures a time domain length for continuously sending the padding signal according to the time domain length included in the third indication information.
  • step numbers in the respective illustrations of the embodiments of the present invention are only for convenience of description, and do not limit the order of execution.
  • the execution order of S208 and S209 is not limited to S204.
  • S208 may be performed before S204, for example, before S203 or in synchronization with S203.
  • a signal processing method for instructing a UE to send a padding signal according to a method for sending a time domain length indication by an access node according to the foregoing embodiment is described in the following.
  • FIG. 6P and FIG. 6Q are schematic diagrams showing the process sequence of the UE performing the interception and filling signal transmission under the FBE policy and the LBE policy, respectively.
  • the eNB0 indicates, in the third indication information, the time domain length of the UE to send the padding signal, for example, 3 ms.
  • the UE configures to send the padding signal with a fixed length of the time domain, for example, when the configured padding signal is sent.
  • the domain length is also 3 ms.
  • the UE immediately performs the CCA listening channel, and continuously transmits the 3 ms padding signal after the detection succeeds.
  • the eNB0 since the eNB0 does not determine the deadline for the UE to send the padding signal, it may be preempted in the process of the UE transmitting the padding signal. Therefore, the eNB starts to send the data information after robbing the channel but does not schedule the UE.
  • the pilot signal of the UE includes a pilot signal, and the eNB0 learns the start time of the UE to start sending the padding signal by detecting the pilot information in the UE padding signal, and determines the UE to send the time domain length of the padding signal in combination with the UE. The end time of the padding signal, the case where the UE is scheduled after the end time.
  • the first node in order to solve the problem that the first node preempts the channel but the UE still sends the padding signal, and the first node cannot receive the data, or the first node cannot always preempt the channel, the other UE needs to be replaced to send the padding signal.
  • the problem is that the first node may send the indication information that immediately ends the filling signal transmission to the UE that sends the padding signal, so that the UE stops sending the padding signal immediately after receiving the indication information.
  • FIG. 6D The embodiment of the present invention is exemplified by taking the embodiment shown in FIG. 6D as an example.
  • the specific implementation process is as shown in FIG. 6R, that is, the following steps are further included on the basis of FIG. 6D:
  • S210 The UE receives the fourth indication information sent by the first node.
  • the fourth indication information is used to indicate that the UE ends the sending of the padding signal immediately.
  • S211 The UE stops performing CCA or stops sending the padding signal according to the fourth indication information.
  • the UE may continue to perform CCA and padding after receiving the first indication information.
  • the process of signal transmission that is, after the current padding signal reaches the longest channel occupation time, immediately enters the listening phase of the next padding signal, and cycles back and forth until receiving the fourth indication information sent by the first node, stopping CCA or stopping. Send a fill signal.
  • the UE may perform the process of transmitting the CCA and the filling signal, and stop receiving the filling signal in real time when receiving the fourth indication information sent by the first node. send.
  • the UE may detect the synchronization and control channel of the first node in the next subframe.
  • the fourth indication information involved in the embodiment of the present invention is different from the second indication information, and does not need to indicate the subframe number of the stop signal to be sent, but only the identifier of 1 bit, and the UE receives the fourth Immediately after the indication message, the padding signal is stopped in the current subframe.
  • FIG. 6S and FIG. 6T are schematic diagrams showing the process sequence of the UE performing the interception and filling signal transmission under the FBE policy and the LBE policy, respectively.
  • the eNB0 sends the fourth indication information to the UE, and the UE stops the transmission of the padding signal immediately after receiving the fourth indication information.
  • the first node that is accessed by the UE sends, to the UE, first indication information for instructing the UE to send a padding signal, and the UE performs CCA according to the first indication information, and detects the channel.
  • the padding signal is sent on the unlicensed spectrum carrier used by the first node, so that the node that competes with the channel with the first node performs the energy detection process of the CCA, and detects that the channel is occupied and retreats to idle.
  • the state, and release the channel improve the chance that the node accessed by the UE successfully seizes the channel.
  • the signal processing method provided by the embodiment of the present invention does not require the eNB to reduce the transmit power, thereby avoiding the drop of the useful signal received power and the interference problem caused by the hidden node, and effectively guaranteeing the service quality of the edge UE.
  • the present invention also does not need to perform carrier switching. This method uses a wider range of scenarios, such as channel congestion on each carrier, or the eNB can only aggregate a single unlicensed carrier and the traffic on the authorized carrier is large.
  • the present invention does not require additional introduction of modules, does not lead to an increase in design and implementation complexity, and can effectively solve the problem that the eNB has been unable to preempt the channel due to the "data transmission relay" of the surrounding transmitting nodes.
  • FIG. 7A is a flowchart of another signal processing method according to an embodiment of the present invention.
  • the method as shown in FIG. 7A is a first node, as shown in FIG. 7A, and includes:
  • the first node determines first indication information, where the first indication information is used to indicate that the UE performs CCA, and sends a padding signal on the unlicensed spectrum carrier used by the first node if the channel is detected to be idle.
  • the signal is filled in, and the power value of the CCA energy detection on the unlicensed spectrum carrier used by the CN in the first node is continuously exceeded the set threshold, and the channel is occupied and then retired as idle. And assisting the first node to occupy the role of the channel on the unlicensed spectrum carrier used by the first node.
  • the first node is a node accessed by the UE, and the second node is a node that competes with the first node for a channel.
  • the first node sends the first indication information to the UE.
  • the first node sends the first indication information for instructing the UE to send the padding signal to the UE, so that the UE can perform CCA according to the first indication information, and in the case that the channel is idle,
  • the padding signal is sent on the unlicensed spectrum carrier used by the node, so that the node that competes with the channel with the first node performs the energy detection process of the CCA, detects that the channel is occupied, and retreats to the idle state, and releases the channel, improving the first The opportunity for the node to successfully seize the channel.
  • the first node may send the first indication information to the part of the UE that accesses the first node on the licensed spectrum carrier.
  • Some UEs are generally UEs that are geographically close to the CN.
  • the first node may determine, according to the measurement feedback of the UE, the first indication information to be sent to the UE. For example, before the first node sends the first indication information to the UE, the first node further includes the following steps, as shown in FIG. 7B:
  • the first node receives the detection result of performing energy detection on the wireless signal on the full bandwidth of the carrier on the unlicensed spectrum carrier that is reported by the UE and is detected by the first node.
  • the detection result of the first node indicating whether the first node sends the first indication information may be that the energy of the detected full bandwidth of the carrier is quantized into an energy level, or may directly indicate whether to send the padding signal. Request information.
  • the first node determines, according to the detection result, a UE that needs to receive the first indication information.
  • the first node may select the UE that sends the request information or the UE with the higher energy level as the UE that sends the padding signal according to the detection result, and then sends the first indication information to the related UE.
  • the first node may determine, according to the effect of sending the first indication information, whether to continue to send a padding signal to the UE that receives the first indication information, for example, if the set UE is sent consecutive times The first indication information, the first node performs the CCA, and the received power on the channel is still not significantly reduced, so that the channel cannot be successfully preempted, indicating that the filling signal of the UE receiving the first indication information cannot make CN backoff or the UE cannot preempt to send.
  • the first node may instead select to send the first indication information to other UEs than the set UE.
  • the first node may further send an end time indication that ends the sending of the padding signal to the UE.
  • the embodiment of the present invention is illustrated by using FIG. 7B as an example.
  • the implementation method is as shown in FIG. 7C, and further includes:
  • the first node sends the second indication information to the UE, where the second indication information includes a first end time for indicating that the UE is expected to end the sending of the padding signal.
  • the first node does not perform scheduling of the UE before the first end time, and may be after the first end time. And scheduling the UE if the first node preempts the channel.
  • the first node may further send, to the UE, the information indicating the length of the time domain in the end of the sending of the padding signal, in the embodiment of the present invention, in FIG. 7B.
  • the implementation method is as shown in FIG. 7D, and further includes:
  • the first node sends the third indication information to the UE, where the third indication information includes a time domain length for indicating that the UE continuously sends the padding signal.
  • the first node does not perform the adjustment of the UE before stopping the sending of the padding signal.
  • the first node may detect a start time of the UE to send a padding signal; and determine, according to a start time of the UE to send a padding signal and a time domain length included in the third indication information, The moment when the UE stops transmitting the padding signal; after the determined time when the UE stops transmitting the padding signal, and the first node preempts the channel, the first node schedules the UE.
  • the first node may further send the fourth indication information to the UE, where the method is shown in FIG. 7A to FIG. 7D.
  • the implementation method is as shown in FIG. 7E, and further includes:
  • S305 The first node sends fourth indication information to the UE, where the fourth indication information is used to indicate that the UE ends the sending of the padding signal.
  • the first node does not perform scheduling of the UE before stopping the sending of the padding signal, that is, in the embodiment of the present invention.
  • the first node may schedule the UE after the fourth indication information is sent and the first node preempts the channel.
  • the first node sends, to the UE, second indication information including a first end time that is expected to end the transmission of the padding signal, and sends, to the UE, third indication information that includes a time domain length indicating that the UE continuously sends the padding signal, Or sending the fourth indication information to the UE, so that the UE can stop sending the padding signal or stop the CCA at the corresponding moment, and prepare to receive the data service.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can 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 present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It should be understood that the flow chart can be implemented by computer program instructions And/or a combination of the processes and/or blocks in the block diagrams, and the flowcharts and/or blocks in the flowcharts. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.
  • 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

本发明提供一种信号处理方法、用户设备及节点设备,本发明实施例中,用户设备接收第一节点发送的第一指示信息,所述第一指示信息用于指示所述用户设备发送填充信号;所述用户设备根据所述第一指示信息进行空闲信道评测,并在检测到信道空闲的情况下,在所述第一节点使用的非授权频谱载波上发送填充信号。通过本发明,可使与第一节点竞争信道的节点进行空闲信道评测的能量检测过程中,检测到信道被占用而退避为空闲状态,并释放信道,提高用户设备接入的节点成功抢占到信道的机会。

Description

一种信号处理方法、用户设备及节点设备 技术领域
本发明涉及通信技术领域,尤其涉及一种信号处理方法、用户设备及节点设备。
背景技术
长期演进(Long Term Evolution,LTE)系统和长期演进升级(Long Term Evolution-Advanced,LTE-A)系统中广泛应用载波聚合(Carrier Aggregation,CA)技术扩展带宽实现高速数据传输。
为了进一步扩展带宽,利用非授权频谱传输数据,已成为未来移动通信满足业务需求的重要发展方向。非授权频谱LTE(Licensed-Assisted Access using LTE,LAA-LTE)系统通常将授权频谱作为主成员载波(Primary Component Carrier,PCC),将非授权频谱作为辅成员载波(Secondary Component Carrier,SCC)进行载波聚合。
LAA-LTE在非授权频谱上进行数据传输,会面临来自不同运营商、不同无线通信制式的同频干扰,例如Wifi系统的同频干扰。为了避免同频干扰对传输性能造成严重影响,LAA-LTE系统中通常采用先听后发(Listen-Before-Talk,LBT)的信道接入机制,要求节点在发送信息之前先进行空闲信道评测(Clear Channel Assessment,CCA),只有在检测到信道空闲的情况下才能进行数据的发送,此种情景称之为成功抢占到信道;反之若检测到信道被占,则不发送信号,直到进行下次CCA并成功抢占到信道。
LBT机制下,非授权频谱上的每个节点竞争到信道的机会是均等的,因此,在多个节点共存的场景中,随着网络中共同竞争信道的节点数目增多,平均每个节点抢占到信道的机会就会降低,甚至会出现接入节点完全抢占不到信道的情况。例如,在一个eNB和两个接入节点(Access Point,AP)共存的场景中,如图1所示,AP1和AP2分别与eNB0处于彼此的侦听范围之内, AP1和AP2处于彼此的侦听范围之外,用户设备(User Equipment,UE)1和用户设备2接入eNB0,UE1距离AP1较近,UE2距离AP2较近,AP1和AP2采用随机回退机制,即在数据发送之前先经历一个回退窗。AP1释放信道时,在回退窗内侦听不到AP2发送数据,因此在回退窗的计数器归零后可以继续发送数据,AP2亦然。由于回退窗的长度通常远小于数据发送时长,因此可能出现“数据传输接力”的情况,即AP1和AP2的信道释放时间互相处于彼此的数据发送时间范围之内,当AP1和AP2的负载较重时,从eNB0的角度,信道处于一直被占用的状态,从而完全无法抢占到信道。
发明内容
本发明实施例提供一种信号处理方法、用户设备及节点设备,以提高用户设备接入的节点成功抢占到信道的机会。
第一方面,提供一种用户设备,包括接收器、存储器、处理器和发射器,其中:
所述存储器,用于存储所述处理器执行的程序代码;
所述处理器,用于调用所述存储器存储的程序,通过所述接收器接收第一节点发送的第一指示信息,所述第一指示信息用于指示所述用户设备发送填充信号,根据接收到的所述第一指示信息进行空闲信道评测,并在检测到信道空闲的情况下,控制所述发射器在所述第一节点使用的非授权频谱载波上发送填充信号。
结合第一方面,在第一种可能的实现方式中,所述处理器通过所述接收器在授权频谱载波上接收所述第一指示信息。
结合第一方面或者第一方面的第一种实现方式,在第二种实现方式中,所述处理器控制所述发射器在所述第一节点使用的非授权频谱载波全带宽上发送填充信号。
结合第一方面、第一方面的第一种实现方式或者第一方面的第二种实现方式,在第三种实现方式中,所述处理器还用于:
在所述第一节点侦听的非授权频谱载波上对载波全带宽上的无线信号进行能量检测,得到用于表征所述第一节点是否发送所述第一指示信息的检测结果,向所述第一节点上报所述检测结果。
结合第一方面或者第一方面的第一种实现方式至第一方面的第三种实现方式中的任一种实现方式,在第四种实现方式中,所述处理器还用于:
通过所述接收器接收所述第一节点发送的第二指示信息,所述第二指示信息中包括用于指示所述用户设备预期结束发送填充信号的第一结束时刻;
所述用户设备根据所述第一结束时刻,设置结束发送所述填充信号的第二结束时刻,所述第二结束时刻不晚于所述第一结束时刻。
结合第一方面的第四种实现方式,在第五种实现方式中,所述处理器还用于:
根据所述第一指示信息进行空闲信道评测之前,根据所述第一结束时刻,确定发送填充信号的空闲信道评测起始时刻。
结合第一方面的第五种实现方式,在第六种实现方式中,所述处理器具体用于按如下方式根据所述第一结束时刻,确定发送填充信号的空闲信道评测起始时刻:
根据所述第一结束时刻、所述用户设备进行空闲信道评测的一个时隙的时间长度与所述用户设备最长持续信道占用时间,确定第一起始时刻;
所述第一起始时刻与所述第一结束时刻之间的时间长度,等于所述用户设备进行空闲信道评测的一个时隙的时间长度与所述用户设备最长持续信道占用时间之和;
根据所述第一结束时刻、所述用户设备进行空闲信道评测的一个时隙的时间长度与所述第一节点进行空闲信道评测的一个时隙的时间长度,确定第二起始时刻;
所述第二起始时刻与所述第一结束时刻之间的时间长度,等于所述用户设备进行空闲信道评测的一个时隙的时间长度与所述第一节点进行空闲信道评测的一个时隙的时间长度之和;
在所述第一起始时刻和第二起始时刻之间,确定空闲信道评测起始时刻。
结合第一方面的第四种实现方式至第一方面的第六种实现方式中的任一种实现方式,在第七种实现方式中,所述第二结束时刻与所述第一结束时刻之间的时间长度,等于所述第一节点进行空闲信道评测使用的一个时隙的时间长度。
结合第一方面或者第一方面的第一种实现方式至第一方面的第三种实现方式中的任一种实现方式,在第八种实现方式中,所述处理器还用于:
通过所述接收器接收所述第一节点发送的第三指示信息,所述第三指示信息中包括用于指示所述用户设备持续发送填充信号的时域长度;根据所述第三指示信息中包括的所述时域长度,配置持续发送所述填充信号的时域长度。
结合第一方面或者第一方面的第一种实现方式至第一方面的第八种实现方式中的任一种实现方式,在第九种实现方式中,所述处理器还用于:
通过所述接收器接收所述第一节点发送的第四指示信息,所述第四指示信息用于指示UE立即结束发送填充信号;依据所述第四指示信息,停止进行空闲信道评测或者停止发送填充信号。
第二方面,提供一种节点设备,包括发射器、存储器和处理器,其中:
所述存储器,用于存储所述处理器执行的程序代码;
所述处理器,用于调用所述存储器存储的程序,确定第一指示信息,并控制所述发射器向用户设备发送所述第一指示信息,所述第一指示信息用于指示用户设备进行空闲信道评测,并在检测到信道空闲的情况下,在所述节点设备使用的非授权频谱载波上发送填充信号。
结合第二方面,在第一种实现方式中,所述处理器还用于:
向用户设备发送所述第一指示信息之前,接收用户设备上报的、在所述节点设备侦听的非授权频谱载波上对载波全带宽上的无线信号进行能量检测的检测结果;所述节点设备根据所述检测结果,确定需要接收所述第一指示信息的用户设备。
结合第二方面或者第二方面的第一种实现方式,在第二种实现方式中,所述处理器还用于:
控制所述发射器向所述用户设备发送第二指示信息,所述第二指示信息中包括用于指示所述用户设备预期结束发送填充信号的第一结束时刻。
结合第二方面的第二种实现方式,在第三种实现方式中,所述处理器还用于:
在所述第一结束时刻后、且在所述节点设备抢占到信道的情况下,调度所述用户设备。
结合第二方面或者第二方面的第一种实现方式,在第四种实现方式中,所述处理器还用于:
控制所述发射器向所述用户设备发送第三指示信息,所述第三指示信息中包括用于指示所述用户设备持续发送填充信号的时域长度。
结合第二方面的第四种实现方式,在第五种实现方式中,所述处理器还用于:
检测用户设备发送填充信号的起始时刻;根据用户设备发送填充信号的起始时刻和所述第三指示信息中包括的时域长度,确定用户设备停止发送填充信号的时刻;在确定的用户设备停止发送填充信号的时刻后、且在所述节点设备抢占到信道的情况下,调度所述用户设备。
结合第二方面、第二方面的第一种实现方式、第二方面的第二种实现方式或者第二方面的第四种实现方式,在第六种实现方式中,所述处理器还用于:
控制所述发射器向所述用户设备发送第四指示信息,所述第四指示信息用于指示所述用户设备立即结束发送填充信号。
结合第二方面的第六种实现方式,在第七种实现方式中,所述处理器还用于:
在控制所述发射器发送所述第四指示信息后、且在所述节点设备抢占到信道的情况下,调度所述用户设备。
第三方面,提供一种用户设备,包括:
接收单元,用于接收第一节点发送的第一指示信息,所述第一指示信息用于指示所述用户设备发送填充信号;
发送单元,用于根据所述接收单元接收到的所述第一指示信息进行空闲信道评测,并在检测到信道空闲的情况下,在所述第一节点使用的非授权频谱载波上发送填充信号。
结合第三方面,在第一种可能的实现方式中,所述接收单元在授权频谱载波上接收所述第一指示信息。
结合第三方面或者第三方面的第一种实现方式,在第二种实现方式中,所述发送单元在所述第一节点使用的非授权频谱载波全带宽上发送填充信号。
结合第三方面、第三方面的第一种实现方式或者第三方面的第二种实现方式,在第三种实现方式中,所述用户设备还包括检测单元和上报单元,其中,
所述检测单元,用于在所述接收单元接收第一节点发送的第一指示信息之前,在所述第一节点侦听的非授权频谱载波上对载波全带宽上的无线信号进行能量检测,得到用于表征所述第一节点是否发送所述第一指示信息的检测结果;
所述上报单元,用于向所述第一节点上报所述检测单元得到的检测结果。
结合第三方面或者第三方面的第一种实现方式至第三方面的第三种实现方式中的任一种实现方式,在第四种实现方式中,所述接收单元,还用于:
接收所述第一节点发送的第二指示信息,所述第二指示信息中包括用于指示所述用户设备预期结束发送填充信号的第一结束时刻;
所述用户设备还包括设置单元,其中,
所述设置单元,用于根据所述接收单元接收的第一结束时刻,设置结束发送所述填充信号的第二结束时刻,所述第二结束时刻不晚于所述第一结束时刻。
结合第三方面的第四种实现方式,在第五种实现方式中,所述用户设备还包括确定单元,其中,
所述确定单元,用于在所述发送单元根据所述第一指示信息进行空闲信道评测之前,根据所述接收单元接收到的第二指示信息中的第一结束时刻,确定发送填充信号的空闲信道评测起始时刻。
结合第三方面的第五种实现方式,在第六种实现方式中,所述确定单元,具体用于按如下方式根据所述第一结束时刻,确定发送填充信号的空闲信道评测起始时刻:
根据所述第一结束时刻、所述用户设备进行空闲信道评测的一个时隙的时间长度与所述用户设备最长持续信道占用时间,确定第一起始时刻;
所述第一起始时刻与所述第一结束时刻之间的时间长度,等于所述用户设备进行空闲信道评测的一个时隙的时间长度与所述用户设备最长持续信道占用时间之和;
根据所述第一结束时刻、所述用户设备进行空闲信道评测的一个时隙的时间长度与所述第一节点进行空闲信道评测的一个时隙的时间长度,确定第二起始时刻;
所述第二起始时刻与所述第一结束时刻之间的时间长度,等于所述用户设备进行空闲信道评测的一个时隙的时间长度与所述第一节点进行空闲信道评测的一个时隙的时间长度之和;
在所述第一起始时刻和第二起始时刻之间,确定空闲信道评测起始时刻。
结合第三方面的第四种实现方式至第三方面的第六种实现方式中的任一种实现方式,在第七种实现方式中,所述第二结束时刻与所述第一结束时刻之间的时间长度,等于所述第一节点进行空闲信道评测使用的一个时隙的时间长度。
结合第三方面或者第三方面的第一种实现方式至第三方面的第三种实现方式中的任一种实现方式,在第八种实现方式中,所述接收单元,还用于:
接收所述第一节点发送的第三指示信息,所述第三指示信息中包括用于 指示所述用户设备持续发送填充信号的时域长度;
所述用户设备还包括配置单元,其中,
所述配置单元,用于根据所述第三指示信息中包括的所述时域长度,配置持续发送所述填充信号的时域长度。
结合第三方面或者第三方面的第一种实现方式至第三方面的第八种实现方式中的任一种实现方式,在第九种实现方式中,所述接收单元,还用于:
接收所述第一节点发送的第四指示信息,所述第四指示信息用于指示UE立即结束发送填充信号,依据所述第四指示信息,停止进行空闲信道评测或者停止发送填充信号。
第四方面,提供一种节点设备,包括:
确定单元,用于确定第一指示信息,所述第一指示信息用于指示用户设备进行空闲信道评测,并在检测到信道空闲的情况下,在所述节点设备使用的非授权频谱载波上发送填充信号;
发送单元,用于向用户设备发送所述确定单元确定的所述第一指示信息。
结合第四方面,在第一种实现方式中,所述节点设备还包括接收单元,其中,
所述接收单元,用于接收用户设备上报的、在所述节点设备侦听的非授权频谱载波上对载波全带宽上的无线信号进行能量检测的检测结果;
所述确定单元,还用于根据所述接收单元接收的检测结果,确定需要接收所述第一指示信息的用户设备。
结合第四方面或者第四方面的第一种实现方式,在第二种实现方式中,所述发送单元,还用于:
向所述用户设备发送第二指示信息,所述第二指示信息中包括用于指示所述用户设备预期结束发送填充信号的第一结束时刻。
结合第四方面的第二种实现方式,在第三种实现方式中,所述节点设备还包括调度单元,其中,
所述调度单元,用于在所述第一结束时刻后、且在所述节点设备抢占到 信道的情况下,调度所述用户设备。
结合第四方面或者第四方面的第一种实现方式,在第四种实现方式中,所述发送单元,还用于:
向所述用户设备发送第三指示信息,所述第三指示信息中包括用于指示所述用户设备持续发送填充信号的时域长度。
结合第四方面的第四种实现方式,在第五种实现方式中,所述节点设备还包括检测单元和调度单元,其中,
所述检测单元,用于检测用户设备发送填充信号的起始时刻;
所述确定单元,还用于根据用户设备发送填充信号的起始时刻和所述第三指示信息中包括的时域长度,确定用户设备停止发送填充信号的时刻;
所述调度单元,用于在所述确定单元确定的用户设备停止发送填充信号的时刻后、且在所述节点设备抢占到信道的情况下,调度所述用户设备。
结合第四方面、第四方面的第一种实现方式、第四方面的第二种实现方式或者第四方面的第四种实现方式,在第六种实现方式中,所述发送单元,还用于:
向所述用户设备发送第四指示信息,所述第四指示信息用于指示所述用户设备立即结束发送填充信号。
结合第四方面的第六种实现方式,在第七种实现方式中,所述节点设备还包括调度单元,其中,
所述调度单元,用于在所述发送单元发送所述第四指示信息后、且在所述节点设备抢占到信道的情况下,调度所述用户设备。
第五方面,提供一种信号处理方法,包括:
用户设备接收第一节点发送的第一指示信息,所述第一指示信息用于指示所述用户设备发送填充信号;
所述用户设备根据所述第一指示信息进行空闲信道评测,并在检测到信道空闲的情况下,在所述第一节点使用的非授权频谱载波上发送填充信号。
结合第五方面,在第一种可能的实现方式中,所述用户设备在授权频谱 载波上接收所述第一指示信息。
结合第五方面或者第五方面的第一种实现方式,在第二种实现方式中,所述用户设备在所述第一节点使用的非授权频谱载波全带宽上发送填充信号。
结合第五方面、第五方面的第一种实现方式或者第五方面的第二种实现方式,在第三种实现方式中,所述用户设备接收第一节点发送的第一指示信息之前,还包括:
所述用户设备在所述第一节点侦听的非授权频谱载波上对载波全带宽上的无线信号进行能量检测,得到用于表征所述第一节点是否发送所述第一指示信息的检测结果;
所述用户设备向所述第一节点上报所述检测结果。
结合第五方面或者第五方面的第一种实现方式至第五方面的第三种实现方式中的任一种实现方式,在第四种实现方式中,所述方法还包括:
所述用户设备接收所述第一节点发送的第二指示信息,所述第二指示信息中包括用于指示所述用户设备预期结束发送填充信号的第一结束时刻;
所述用户设备根据所述第一结束时刻,设置结束发送所述填充信号的第二结束时刻,所述第二结束时刻不晚于所述第一结束时刻。
结合第五方面的第四种实现方式,在第五种实现方式中,所述用户设备根据所述第一指示信息进行空闲信道评测之前,所述方法还包括:
所述用户设备根据所述第一结束时刻,确定发送填充信号的空闲信道评测起始时刻。
结合第五方面的第五种实现方式,在第六种实现方式中,所述用户设备根据所述第一结束时刻,确定发送填充信号的空闲信道评测起始时刻,包括:
根据所述第一结束时刻、所述用户设备进行空闲信道评测的一个时隙的时间长度与所述用户设备最长持续信道占用时间,确定第一起始时刻;
所述第一起始时刻与所述第一结束时刻之间的时间长度,等于所述用户设备进行空闲信道评测的一个时隙的时间长度与所述用户设备最长持续信道 占用时间之和;
根据所述第一结束时刻、所述用户设备进行空闲信道评测的一个时隙的时间长度与所述第一节点进行空闲信道评测的一个时隙的时间长度,确定第二起始时刻;
所述第二起始时刻与所述第一结束时刻之间的时间长度,等于所述用户设备进行空闲信道评测的一个时隙的时间长度与所述第一节点进行空闲信道评测的一个时隙的时间长度之和;
在所述第一起始时刻和第二起始时刻之间,确定空闲信道评测起始时刻。
结合第五方面的第四种实现方式至第五方面的第六种实现方式中的任一种实现方式,在第七种实现方式中,所述第二结束时刻与所述第一结束时刻之间的时间长度,等于所述第一节点进行空闲信道评测使用的一个时隙的时间长度。
结合第五方面或者第五方面的第一种实现方式至第五方面的第三种实现方式中的任一种实现方式,在第八种实现方式中,所述方法还包括:
所述用户设备接收所述第一节点发送的第三指示信息,所述第三指示信息中包括用于指示所述用户设备持续发送填充信号的时域长度;
所述用户设备根据所述第三指示信息中包括的所述时域长度,配置持续发送所述填充信号的时域长度。
结合第五方面或者第五方面的第一种实现方式至第五方面的第八种实现方式中的任一种实现方式,在第九种实现方式中,所述方法还包括:
所述用户设备接收所述第一节点发送的第四指示信息,所述第四指示信息用于指示UE立即结束发送填充信号;
所述用户设备依据所述第四指示信息,停止进行空闲信道评测或者停止发送填充信号。
第六方面,提供一种信号处理方法,包括:
第一节点确定第一指示信息,所述第一指示信息用于指示用户设备进行空闲信道评测,并在检测到信道空闲的情况下,在所述第一节点使用的非授 权频谱载波上发送填充信号;
所述第一节点向用户设备发送所述第一指示信息。
结合第六方面,在第一种实现方式中,所述第一节点向用户设备发送所述第一指示信息之前,所述方法还包括:
所述第一节点接收用户设备上报的、在所述第一节点侦听的非授权频谱载波上对载波全带宽上的无线信号进行能量检测的检测结果;
所述第一节点根据所述检测结果,确定需要接收所述第一指示信息的用户设备。
结合第六方面或者第六方面的第一种实现方式,在第二种实现方式中,所述方法还包括:
所述第一节点向所述用户设备发送第二指示信息,所述第二指示信息中包括用于指示所述用户设备预期结束发送填充信号的第一结束时刻。
结合第六方面的第二种实现方式,在第三种实现方式中,所述方法还包括:
在所述第一结束时刻后、且在所述第一节点抢占到信道的情况下,所述第一节点调度所述用户设备。
结合第六方面或者第六方面的第一种实现方式,在第四种实现方式中,所述方法还包括:
所述第一节点向所述用户设备发送第三指示信息,所述第三指示信息中包括用于指示所述用户设备持续发送填充信号的时域长度。
结合第六方面的第四种实现方式,在第五种实现方式中,所述方法还包括:
检测用户设备发送填充信号的起始时刻;
根据用户设备发送填充信号的起始时刻和所述第三指示信息中包括的时域长度,确定用户设备停止发送填充信号的时刻;
在确定的用户设备停止发送填充信号的时刻后、且在所述第一节点抢占到信道的情况下,所述第一节点调度所述用户设备。
结合第六方面、第六方面的第一种实现方式、第六方面的第二种实现方式或者第六方面的第四种实现方式,在第六种实现方式中,所述方法还包括:
所述第一节点向所述用户设备发送第四指示信息,所述第四指示信息用于指示所述用户设备立即结束发送填充信号。
结合第六方面的第六种实现方式,在第七种实现方式中,所述方法还包括:
在发送所述第四指示信息后、且在所述第一节点抢占到信道的情况下,所述第一节点调度所述用户设备。
本发明实施例提供的信号处理方法、用户设备及节点设备,用户设备接入的第一节点向用户设备发送用于指示所述用户设备发送填充信号的第一指示信息,用户设备根据该第一指示信息进行CCA,并在检测到信道空闲的情况下,在所述第一节点使用的非授权频谱载波上发送填充信号,故可使与第一节点竞争信道的节点进行空闲信道评测的能量检测过程中,检测到信道被占用而退避为空闲状态,并释放信道,提高用户设备接入的节点成功抢占到信道的机会。
附图说明
图1所示为现有技术中用户设备接入的节点无法抢占到信道的示意图;
图2所示为本发明实施例提供的用户设备的构成示意图;
图3所示为本发明实施例提供的节点设备的构成示意图;
图4A-图4E为本发明实施例提供的另一用户设备的构成示意图;
图5A-图5D为本发明实施例提供的另一节点设备的构成示意图;
图6A为本发明实施例提供的信号处理方法第一流程图;
图6B为本发明实施例提供的接收用于指示UE发送填充信号的第一指示信息的示意图;
图6C为本发明实施例中UE发送填充信号,使CN在第一节点使用的非授权频谱载波上进行CCA的能量检测确定信道被占用并退避为空闲状态的示意 图;
图6D为本发明实施例中UE进行能量检测并向第一节点上报得到的检测结果实现过程示意图;
图6E为本发明实施例UE采用FBE策略,UE1和UE2发送填充信号协助eNB0抢占信道的时序图;
图6F为本发明实施例U E采用LBE策略,UE1和UE2发送填充信号协助eNB0抢占信道的时序图;
图6G为本发明实施例提供的信号处理方法第二实现流程图;
图6H为本发明实施例UE采用FBE策略,UE结束发送填充信号的时序示意图;
图6I为本发明实施例UE采用LBE策略,UE结束发送填充信号的时序示意图;
图6J为本发明实施例UE采用FBE策略,UE结束发送填充信号的另一时序示意图;
图6K为本发明实施例UE采用LBE策略,UE结束发送填充信号的另一时序示意图;
图6L为本发明实施例提供的信号处理方法的再一流程图;
图6M为本发明实施例UE采用FBE策略下,UE执行一次侦听与填充信号发送情况下CCA起始时刻的确定时序图;
图6N为本发明实施例UE采用LBE策略下,UE执行一次侦听与填充信号发送情况下CCA起始时刻的确定时序图;
图6O为本发明实施例提供的信号处理方法的第三实现流程图;
图6P为本发明实施例UE采用FBE策略下,UE执行侦听与填充信号发送的过程时序示意图;
图6Q为本发明实施例UE采用LBE策略下,UE执行侦听与填充信号发送的过程时序示意图;
图6R为本发明实施例提供的信号处理方法的第四实现流程图;
图6S为本发明实施例UE采用FBE策略下,UE执行侦听与填充信号发送的过程时序示意图;
图6T为本发明实施例UE采用LBE策略下,UE执行侦听与填充信号发送的过程时序示意图;
图7A为本发明实施例提供的另一信号处理方法第一流程图;
图7B为本发明实施例提供的另一信号处理方法第二流程图;
图7C为本发明实施例提供的另一信号处理方法第三流程图;
图7D为本发明实施例提供的另一信号处理方法第四流程图;
图7E为本发明实施例提供的另一信号处理方法第五流程图;
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中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发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明实施例提供的信号处理方法、用户设备及节点设备,可适用于工作在授权频谱和非授权频谱上的无线通信系统,例如LAA-LTE系统,本发明尤其适用于不同节点共存的场景,例如不同LAA-LTE运营商的发送节点共存、LAA-LTE发送节点(既包括单个LAA-LTE运营商,也包括多个LAA-LTE运营商)和其他工作在非授权频谱的无线通信系统共存等。
本发明实施例中以第一节点和第二节点共存的场景为例进行说明,其中,第一节点为UE接入的节点,第二节点是与第一节点竞争信道的节点,例如,第二节点占用信道发射信号,使得第一节点执行CCA时接收功率超过能量检测门限,进而降低第一节点抢占信道的机会,甚至会使第一节点抢占不到信道。本发明实施例中第二节点也可以称为竞争节点(Competetion Node,CN),且竞争节点的数量可以为一个,也可以不止一个。
本发明实施例中第一节点和第二节点可以是宏基站(Macro eNB),射频 拉远天线(Remote Radio Head,RRH)、小基站(Pico eNodeB,Pico eNB)、家用基站(Home eNodeB,HeNB)、中继设备(Relay Node,RN)和接入点(Access Point,AP)等。
本发明实施例中以图1所示的共存场景为例进行说明,其中,第一节点为eNB0,第二节点为AP1和AP2。AP1和AP2都处于eNB0的侦听范围内,即AP1和AP2两者中任意一个节点发送数据都会导致eNB0检测到信道被占用,本发明实施例中为提高eNB0成功抢占到信道的机会,可以使被eNB0服务的UE(接入eNB0的UE)中距离第二节点较近的UE发送填充信号,图1所示的应用场景中,距离第二节点较近的UE即为距离AP1较近的UE1和距离AP2较近的UE2,使得AP1和AP2进行CCA的能量检测确定信道被占用,从而使AP1和AP2退避为空闲状态并释放信道,提高eNB0成功抢占到信道的机会。
本发明实施例提供一种用户设备200,如图2所示,本发明实施例提供的用户设备200包括接收器201、存储器202、处理器203和发射器204,当然根据实际情况,本发明实施例中提供的用户设备200可能还包括通信总线,本发明实施例不做限定。本发明实施例中:
所述存储器202,用于存储所述处理器203执行的程序代码。
所述处理器203,用于调用所述存储器202存储的程序,通过所述接收器201接收第一节点发送的第一指示信息,所述第一指示信息用于指示所述用户设备发送填充信号,根据接收到的所述第一指示信息进行空闲信道评测,并在检测到信道空闲的情况下,控制所述发射器204在所述第一节点使用的非授权频谱载波上发送填充信号。
在第一种可能的实现方式中,所述处理器203通过所述接收器201在授权频谱载波上接收所述第一指示信息。
在第二种实现方式中,所述处理器203控制所述发射器204在所述第一节点使用的非授权频谱载波全带宽上发送填充信号。
在第三种实现方式中,所述处理器203还用于:
在所述第一节点侦听的非授权频谱载波上对载波全带宽上的无线信号进行能量检测,得到用于表征所述第一节点是否发送所述第一指示信息的检测结果,向所述第一节点上报所述检测结果。
在第四种实现方式中,所述处理器203还用于:
通过所述接收器201接收所述第一节点发送的第二指示信息,所述第二指示信息中包括用于指示所述用户设备预期结束发送填充信号的第一结束时刻。
所述用户设备根据所述第一结束时刻,设置结束发送所述填充信号的第二结束时刻,所述第二结束时刻不晚于所述第一结束时刻。
在第五种实现方式中,所述处理器203还用于:
根据所述第一指示信息进行空闲信道评测之前,根据所述第一结束时刻,确定发送填充信号的空闲信道评测起始时刻。
在第六种实现方式中,所述处理器203具体用于按如下方式根据所述第一结束时刻,确定发送填充信号的空闲信道评测起始时刻:
根据所述第一结束时刻、所述用户设备进行空闲信道评测的一个时隙的时间长度与所述用户设备最长持续信道占用时间,确定第一起始时刻。
所述第一起始时刻与所述第一结束时刻之间的时间长度,等于所述用户设备进行空闲信道评测的一个时隙的时间长度与所述用户设备最长持续信道占用时间之和。
根据所述第一结束时刻、所述用户设备进行空闲信道评测的一个时隙的时间长度与所述第一节点进行空闲信道评测的一个时隙的时间长度,确定第二起始时刻。
所述第二起始时刻与所述第一结束时刻之间的时间长度,等于所述用户设备进行空闲信道评测的一个时隙的时间长度与所述第一节点进行空闲信道评测的一个时隙的时间长度之和。
在所述第一起始时刻和第二起始时刻之间,确定空闲信道评测起始时刻。
在第七种实现方式中,所述第二结束时刻与所述第一结束时刻之间的时 间长度,等于所述第一节点进行空闲信道评测使用的一个时隙的时间长度。
在第八种实现方式中,所述处理器203还用于:
通过所述接收器201接收所述第一节点发送的第三指示信息,所述第三指示信息中包括用于指示所述用户设备持续发送填充信号的时域长度。根据所述第三指示信息中包括的所述时域长度,配置持续发送所述填充信号的时域长度。
在第九种实现方式中,所述处理器203还用于:
通过所述接收器201接收所述第一节点发送的第四指示信息,所述第四指示信息用于指示UE立即结束发送填充信号。依据所述第四指示信息,停止进行空闲信道评测或者停止发送填充信号。
本发明实施例提供的用户设备200接收用户设备200接入的第一节点发送的用于指示所述用户设备200发送填充信号的第一指示信息,用户设备200根据该第一指示信息进行CCA,并在检测到信道空闲的情况下,在所述第一节点使用的非授权频谱载波上发送填充信号,故可使与第一节点竞争信道的节点进行空闲信道评测的能量检测过程中,检测到信道被占用而退避为空闲状态,并释放信道,提高用户设备200接入的节点成功抢占到信道的机会。
本发明实施例还提供一种节点设备300,包括发射器301、存储器302和处理器303,如图3所示,当然根据实际情况,本发明实施例中提供的节点设备300可能还包括通信总线,本发明实施例不做限定。本发明实施例中:
所述存储器302,用于存储所述处理器303执行的程序代码。
所述处理器303,用于调用所述存储器302存储的程序,确定第一指示信息,并控制所述发射器301向用户设备发送所述第一指示信息,所述第一指示信息用于指示用户设备进行空闲信道评测,并在检测到信道空闲的情况下,在所述节点设备300使用的非授权频谱载波上发送填充信号。
在第一种实现方式中,所述处理器303还用于:
向用户设备发送所述第一指示信息之前,接收用户设备上报的、在所述节点设备300侦听的非授权频谱载波上对载波全带宽上的无线信号进行能量 检测的检测结果。所述节点设备300根据所述检测结果,确定需要接收所述第一指示信息的用户设备。
在第二种实现方式中,所述处理器303还用于:
控制所述发射器301向所述用户设备发送第二指示信息,所述第二指示信息中包括用于指示所述用户设备预期结束发送填充信号的第一结束时刻。
在第三种实现方式中,所述处理器303还用于:
在所述第一结束时刻后、且在所述节点设备300抢占到信道的情况下,所述节点设备300调度所述用户设备。
在第四种实现方式中,所述处理器303还用于:
控制所述发射器301向所述用户设备发送第三指示信息,所述第三指示信息中包括用于指示所述用户设备持续发送填充信号的时域长度。
在第五种实现方式中,所述处理器303还用于:
检测用户设备发送填充信号的起始时刻,根据用户设备发送填充信号的起始时刻和所述第三指示信息中包括的时域长度,确定用户设备停止发送填充信号的时刻,在确定的用户设备停止发送填充信号的时刻后、且在所述节点设备300抢占到信道的情况下,调度所述用户设备。
在第六种实现方式中,所述处理器303还用于:
控制所述发射器301向所述用户设备发送第四指示信息,所述第四指示信息用于指示所述用户设备立即结束发送填充信号。
在第七种实现方式中,所述处理器303还用于:
在控制所述发射器301发送所述第四指示信息后、且在所述节点设备300抢占到信道的情况下,调度所述用户设备。
本发明实施例提供的节点设备300向用户设备发送用于指示用户设备发送填充信号的第一指示信息,用户设备根据该第一指示信息进行CCA,并在检测到信道空闲的情况下,在所述节点设备300使用的非授权频谱载波上发送填充信号,故可使与节点设备300竞争信道的节点进行空闲信道评测的能量检测过程中,检测到信道被占用而退避为空闲状态,并释放信道,提高用户设 备接入的节点成功抢占到信道的机会。
需要说明的是,本发明上述实施例中涉及的存储器,可以是只读存储器(英文:read-only memory;简称:ROM),随机存取存储器(英文:random access memory;简称:RAM),也可以是电可擦可编程只读存储器(英文:Electrically Erasable Programmable Read-Only Memory;简称:EEPROM)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质,但不限于此,例如存储器可以是上述存储器的组合。
本发明实施例涉及的处理器,可以是一个通用的中央处理器。
本发明实施例还提供一种用户设备400,图4A所示为本发明实施例提供的用户设备400的构成示意图,如图4A所示,用户设备400包括接收单元401和发送单元402,其中:
接收单元401,用于接收第一节点发送的第一指示信息,所述第一指示信息用于指示所述用户设备发送填充信号。
发送单元402,用于根据所述接收单元401接收到的所述第一指示信息进行空闲信道评测,并在检测到信道空闲的情况下,在所述第一节点使用的非授权频谱载波上发送填充信号。
在第一种可能的实现方式中,所述接收单元401在授权频谱载波上接收所述第一指示信息。
在第二种实现方式中,所述发送单元402在所述第一节点使用的非授权频谱载波全带宽上发送填充信号。
在第三种实现方式中,所述用户设备还包括检测单元403和上报单元404,如图4B所示,其中,
所述检测单元403,用于在所述接收单元401接收第一节点发送的第一指示信息之前,在所述第一节点侦听的非授权频谱载波上对载波全带宽上的无线信号进行能量检测,得到用于表征所述第一节点是否发送所述第一指示信息的检测结果。
所述上报单元404,用于向所述第一节点上报所述检测单元403得到的检测结果。
在第四种实现方式中,所述接收单元401,还用于:
接收所述第一节点发送的第二指示信息,所述第二指示信息中包括用于指示所述用户设备预期结束发送填充信号的第一结束时刻。
所述用户设备还包括设置单元405,如图4C所示,其中,
所述设置单元405,用于根据所述接收单元401接收的第一结束时刻,设置结束发送所述填充信号的第二结束时刻,所述第二结束时刻不晚于所述第一结束时刻。
在第五种实现方式中,所述用户设备还包括确定单元406,如图4D所示,其中:
所述确定单元406,用于在所述发送单元402根据所述第一指示信息进行空闲信道评测之前,根据所述接收单元401接收到的第二指示信息中的第一结束时刻,确定发送填充信号的空闲信道评测起始时刻。
在第六种实现方式中,所述确定单元406,具体用于按如下方式根据所述第一结束时刻,确定发送填充信号的空闲信道评测起始时刻:
根据所述第一结束时刻、所述用户设备进行空闲信道评测的一个时隙的时间长度与所述用户设备最长持续信道占用时间,确定第一起始时刻。
所述第一起始时刻与所述第一结束时刻之间的时间长度,等于所述用户设备进行空闲信道评测的一个时隙的时间长度与所述用户设备最长持续信道占用时间之和。
根据所述第一结束时刻、所述用户设备进行空闲信道评测的一个时隙的时间长度与所述第一节点进行空闲信道评测的一个时隙的时间长度,确定第二起始时刻。
所述第二起始时刻与所述第一结束时刻之间的时间长度,等于所述用户设备进行空闲信道评测的一个时隙的时间长度与所述第一节点进行空闲信道评测的一个时隙的时间长度之和。
在所述第一起始时刻和第二起始时刻之间,确定空闲信道评测起始时刻。
在第七种实现方式中,所述第二结束时刻与所述第一结束时刻之间的时间长度,等于所述第一节点进行空闲信道评测使用的一个时隙的时间长度。
在第八种实现方式中,所述接收单元401,还用于:
接收所述第一节点发送的第三指示信息,所述第三指示信息中包括用于指示所述用户设备持续发送填充信号的时域长度。
所述用户设备还包括配置单元407,如图4E所示,其中,
所述配置单元407,用于根据所述第三指示信息中包括的所述时域长度,配置持续发送所述填充信号的时域长度。
在第九种实现方式中,所述接收单元401,还用于:
接收所述第一节点发送的第四指示信息,所述第四指示信息用于指示UE立即结束发送填充信号,依据所述第四指示信息,停止进行空闲信道评测或者停止发送填充信号。
本发明实施例提供的用户设备400接收用户设备400接入的第一节点发送的用于指示所述用户设备400发送填充信号的第一指示信息,用户设备400根据该第一指示信息进行CCA,并在检测到信道空闲的情况下,在所述第一节点使用的非授权频谱载波上发送填充信号,故可使与第一节点竞争信道的节点进行空闲信道评测的能量检测过程中,检测到信道被占用而退避为空闲状态,并释放信道,提高用户设备400接入的节点成功抢占到信道的机会。
本发明实施例还提供一种节点设备500,图5A所示为本发明实施例提供的节点设备500的构成示意图,如图5A所示,节点设备500包括确定单元501和发送单元502,如图5A所示:
确定单元501,用于确定第一指示信息,所述第一指示信息用于指示用户设备进行空闲信道评测,并在检测到信道空闲的情况下,在所述节点设备500使用的非授权频谱载波上发送填充信号。
发送单元502,用于向用户设备发送所述确定单元501确定的所述第一指示信息。
在第一种实现方式中,所述节点设备500还包括接收单元503,如图5B所示,其中,
所述接收单元503,用于接收用户设备上报的、在所述节点设备500侦听的非授权频谱载波上对载波全带宽上的无线信号进行能量检测的检测结果。
所述确定单元501,还用于根据所述接收单元503接收的检测结果,确定需要接收所述第一指示信息的用户设备。
在第二种实现方式中,所述发送单元502,还用于:
向所述用户设备发送第二指示信息,所述第二指示信息中包括用于指示所述用户设备预期结束发送填充信号的第一结束时刻。
在第三种实现方式中,所述节点设备500还包括调度单元504,如图5C所示,其中,
所述调度单元504,用于在所述第一结束时刻后、且在所述节点设备500抢占到信道的情况下,调度所述用户设备。
在第四种实现方式中,所述发送单元502,还用于:
向所述用户设备发送第三指示信息,所述第三指示信息中包括用于指示所述用户设备持续发送填充信号的时域长度。
在第五种实现方式中,所述节点设备500还包括检测单元505和调度单元504,如图5D所示,其中,
所述检测单元505,用于检测用户设备发送填充信号的起始时刻。
所述确定单元501,还用于根据用户设备发送填充信号的起始时刻和所述第三指示信息中包括的时域长度,确定用户设备停止发送填充信号的时刻。
所述调度单元504,用于在所述确定单元501确定的用户设备停止发送填充信号的时刻后、且在所述节点设备500抢占到信道的情况下,调度所述用户设备。
在第六种实现方式中,所述发送单元502,还用于:
向所述用户设备发送第四指示信息,所述第四指示信息用于指示所述用户设备立即结束发送填充信号。
在第七种实现方式中,所述节点设备500还包括调度单元504,可参阅图5C所示,其中,
所述调度单元504,用于在所述发送单元502发送所述第四指示信息后、且在所述节点设备500抢占到信道的情况下,调度所述用户设备。
本发明实施例提供的节点设备500向用户设备发送用于指示用户设备发送填充信号的第一指示信息,用户设备根据该第一指示信息进行CCA,并在检测到信道空闲的情况下,在所述节点设备500使用的非授权频谱载波上发送填充信号,故可使与节点设备500竞争信道的节点进行空闲信道评测的能量检测过程中,检测到信道被占用而退避为空闲状态,并释放信道,提高用户设备接入的节点成功抢占到信道的机会。
本发明实施例以下对本发明实施例提供的信号处理方法进行详细的说明。
图6A所示为本发明实施例提供的信号处理方法流程图,图6A所示的方法执行主体为UE,如图6A所示,包括:
S101:UE接收第一节点发送的第一指示信息。
本发明实施例中第一节点发送的第一指示信息用于指示UE发送填充信号。
本发明实施例中接收第一指示信息的UE,接入到第一节点,并距离CN(第二节点)的地理位置较近,能够以较小的发射功率发射填充信号使CN通过CCA的能量检测,检测到信道被占用而退避为空闲状态,并能降低UE对第一节点抢占信道过程中进行CCA的能量检测的影响,图6B所示为接收用于指示UE发送填充信号的第一指示信息的示意图,图6B中UE1和UE2为接收第一指示信息的UE。
S102:UE根据第一指示信息进行CCA,并在检测到信道空闲的情况下,在所述第一节点使用的非授权频谱载波上发送填充信号。
本发明实施例中涉及的填充信号,具有使UE周围的CN在第一节点使用的非授权频谱载波上进行CCA的能量检测的功率值持续超出设定的门限值的 功能。本发明实施例中UE发送填充信号,UE周围的CN在第一节点使用的非授权频谱载波上进行CCA的能量检测的功率值持续超出设定的门限值,则可确定信道被占用进而退避为空闲,故本发明实施例中UE发送的填充信号能够协助第一节点在第一节点使用的非授权频谱载波上占用信道。图6C所示为本发明实施例中UE发送填充信号,使CN在第一节点使用的非授权频谱载波上进行CCA的能量检测确定信道被占用并退避为空闲状态的示意图。
本发明实施例中UE发送的填充信号例如可以是未承载数据信息的导频信号,包含导频信息的随机信号,或者未承载数据信息的随机信号,即UE的填充信号可以全部为随机生成的信号,也可以在随机信号中包含导频信息,或全部由导频信号构成,便于第一节点通过检测导频信号获知UE所发的填充信号的起始时间。当然,本发明实施例并不限定填充信号的具体实现形式,任何能够实现使距离UE地理位置比较近的CN进行CCA的能量检测确定信道被占用而退避为空闲状态,从而释放信道,提高UE的接入节点(第一节点)抢占到信道机会的信号都可以作为本发明实施例中涉及的填充信号。
本发明实施例中为了避免UE发射功率过大导致其接入的第一节点退避,或发射功率过小不能有效使距离UE较近的CN退避,UE可以在授权频谱载波或非授权频谱载波上接收第一节点复用LTE的上行功率控制机制、发送的闭环功率控制指示,提升或降低填充信号的发射功率。
需要说明的是,本发明实施例中UE在第一节点使用的非授权频谱载波上进行填充信号的发送,在授权频谱载波或者非授权频谱载波上接收第一节点发送的第一指示信息以及其他控制信令。
可选的,本发明实施例中UE可在授权频谱载波上接收第一节点发送的第一指示信息,即第一节点可在授权频谱载波上发送第一指示信息。
可选的,本发明实施例中UE在接收到包括指示UE发送填充信号的第一指示信息后,可在非授权频谱载波上进行CCA检测,在检测到信道空闲的情况下,在所述第一节点所使用的载波全带宽上发送填充信号。换言之,本发明实施例中UE在LBT信道接入机制中,通过CCA检测,若检测到信道空闲 则可以发送填充信号,不需要实现上行同步等功能。
本发明实施例中接收第一指示信息并发送填充信号的UE一般为距离CN地理位置较近的UE,距离CN较近的UE接收到CN发射信号的接收功率一般较大,故本发明实施例中,UE可在接收第一节点发送的第一指示信息之前,在所述第一节点侦听的非授权频谱载波上对载波全带宽上的无线信号进行能量检测,得到用于表征所述第一节点是否发送所述第一指示信息的检测结果,并向第一节点上报得到的检测结果,第一节点根据UE上报的检测结果向UE发送第一指示信息,实现过程如图6D所示,包括:
S201:UE在第一节点侦听的非授权频谱载波上对载波全带宽上的无线信号进行能量检测,得到用于表征所述第一节点是否发送第一指示信息的检测结果。
本发明实施例中UE可在UE接入的第一节点处于空闲状态时,在能量检测时间窗内探测载波全带宽上的无线信号的总能量,无需探测单个节点在某个资源块(Resource Block,RB)上的接收功率大小。
本发明实施例中用于表征所述第一节点是否发送第一指示信息的检测结果可以是将检测到的载波全带宽上的能量量化为一个能量等级,也可以是直接表明是否发送填充信号的请求信息。
S202:UE向第一节点上报得到的检测结果。
本发明实施例中UE可以将检测到的载波全带宽上的能量量化为一个能量等级作为检测结果,上报给第一节点,使第一节点根据接收到的能量等级确定是否需要向UE发送第一指示信息。
本发明实施例中UE还可以根据检测到的载波全带宽上的能量得到是否需要发送填充信号的请求信息,将该请求信息直接上报给第一节点。
本发明实施例中UE可以通过物理上行控制信道(Physical Uplink Control Channel,PUCCH)或者物理上行共享信道(Physical Uplink Shared Channel,PUSCH)向第一节点上报得到的检测结果。
S203:第一节点根据UE上报的检测结果向UE发送第一指示信息,指示 UE发送填充信号。
本发明实施例中在检测结果为需要第一节点发送第一指示信息的情况下,第一节点向UE发送第一指示信息,指示UE发送填充信号。
本发明实施例中第一节点可在授权频谱载波的控制信道上承载第一指示信息,例如在物理下行控制信道(Physical Downlink Control Channel,PDCCH)上承载,相比请求发送(Request To Send,RTS)或允许发送(Clear To Send,CTS)机制,不需要额外增加RTS/CTS信令设计,就能解决第一节点无法抢占到信道的问题。
S204:UE根据第一指示信息,发送填充信号。
本发明实施例中UE在第一节点使用的非授权频谱载波上对载波全带宽上的无线信号进行能量检测,能够较为准确的反映UE受周围CN发射信号的影响,而且不需要检测第一节点发送的导频信号后进行能量检测,故可持续执行。
需要说明的是,本发明实施例中第一节点是否发送第一指示信息可依据实际情况由第一节点自身进行决策,例如第一节点在较长的时间内,例如100ms,每次执行CCA检测,都检测到信道被占用,则可向接入的UE发送第一指示信息,指示UE发送填充信号。
本发明实施例以下结合实际应用对上述实施例涉及的信号处理方法进行举例说明。
LBT信道接入机制中包含两种侦听策略:基于帧的设备(FBE,Frame Based Equipment)和基于负载的设备(LBE,Load Based Equipment),其中FBE策略要求侦听-发送遵守一个固定帧结构,CCA检测到信道被占用时便在接下来的一个帧周期中不发送信息;而LBE规定了一个回退机制,CCA检测到信道被占用时便进入一个回退窗。本发明实施例仍以图1所示的场景,分别针对FBE策略和LBE策略进行举例说明。
对于FBE策略,一个固定帧周期包括信道占用时间(Channel Occupancy Time,COT)和空闲时间(Idle Period,IDP),其中空闲时间长度至少为信道 占用时间的5%,CCA检测位于IDP的尾部,CCA一个时隙的时间长度最短为20μs。eNB采用FBE策略,在CCA时隙内执行信道侦听,当CCA检测到信道被占用时,则在接下来的一个帧周期的信道占用时间内不发业务,反之则在信道占用时间内发送业务;两种情况下都在信道占用时间结束之后进入空闲时间,并在IDP尾部的CCA执行下一次的侦听。而由于下行数据包较大,eNB需要较长的连续数据发送时间,因此eNB的COT长度通常会取较大的值,例如5ms或10ms,这里设置为5ms。UE采用FBE策略,一方面,要求COT时间取值在1ms至10ms之间,因此UE的固定帧长度需要大于1ms,另一方面,为了尽量减小填充信号对周围CN的影响,UE的COT长度应尽量小,因此一个推荐的UE固定帧长度配置是COT+IDT=2ms。图6E所示为UE采用FBE策略,UE1和UE2发送填充信号协助eNB0抢占信道的时序图。如图6E所示,UE1和UE2接收到eNB0发送的第一指示消息后执行CCA,其中UE2检测到信道空闲,因此在COT发送填充信号,并在当前固定帧结束后执行CCA并在检测到空闲后继续发送填充信号;UE1在第一次CCA时检测到信道被占用而不发送,在第二次CCA检测到信道空闲后在COT发送填充信号;eNB0在填充信号发送指示之后的一个CCA检测到信道空闲而占用信道;eNB0的CCA结束时UE1和UE2停止发送填充信号,并开始在下一个子帧上检测eNB0发送的信息。
对于LBE策略,执行随机回退机制,当CCA检测到信道被占用或eNB结束信道占用之后都会进入一个扩展CCA(ECCA,Extended CCA),其计数器初始化为一个1到q之间的随机整数,其中q取值在4至32之间,每个CCA时隙进行一次信道侦听,如果检测到信道空闲,则将计数器减一并进入下一个CCA时隙,直到ECCA的计数器归零后再占用信道发送业务,连续占用信道的最大时长为(13/32)*qms。另外,LBE策略下,由于计数器归零的时刻可能在子帧中间,因此为了保证接下来数据传输的起点对准子帧边界,eNB需要在计数器归零时刻和下一个子帧边界之间发送保留信号(例如填充信号或Preamble信号),以防止在这段时间内信道被其他节点占用法规要求一次传 输中的发送时长取值为1.625ms至13ms,因此本发明实施例中,可以将UE在发送时长设置为2ms,eNB0的发送时长设置为13ms。图6F所示为UE采用LBE策略,UE1和UE2发送填充信号协助eNB0抢占信道的时序图。如图6F所示,UE1和UE2收到填充信号发送指示后立即执行CCA,检测到信道被占用后进入ECCA,直到计数器归零后占用信道发送填充信号,eNB0的ECCA归零后,UE1和UE2停止发送填充信号并开始在下一个子帧上检测eNB0发送的信息。
本发明实施例提供的信号处理方法,UE接入的第一节点向UE发送用于指示所述UE发送填充信号的第一指示信息,进行CCA,并在检测到信道空闲的情况下,在所述第一节点使用的非授权频谱载波上发送填充信号,故可使与第一节点竞争信道的节点进行CCA的能量检测过程中,检测到信道被占用而退避为空闲状态,并释放信道,提高UE接入的第一节点成功抢占到信道的机会。
在具体实施过程中,UE接入的第一节点可能调度到当前发送填充信号的UE,且UE无法在同一频谱上同时进行信号接收和发送,因此当UE接入的第一节点抢占到信道并发射有用数据信息时,UE需要停止发送填充信号并转为接收数据信息。为了通知UE在什么时刻停止发送填充信号并准备接收数据业务,一种简单的实现方法是,UE接入的第一节点提前向UE发送一个填充信号结束时刻指示,例如指示需要停止的子帧序号,需要说明的是所述填充信号结束时刻指示包含但不限于所述用户设备在所述非授权频谱上需要接收的下一个数据子帧的子帧序号。本发明实施例上述实现方式即在图6A或图6D所示的实施例的基础上还包括如下步骤:UE接收第一节点发送的包含用于指示所述UE预期结束发送填充信号的第一结束时刻的第二指示信息,并根据第二指示信息中包括的第一结束时刻设置不晚于第一结束时刻的第二结束时刻,UE在第二结束时刻之后不再进行填充信号发送,直到下一次收到第一指示信息。
本发明实施例以下以图6D所示的实施例为例进行举例说明,具体实现过 程如图6G所示,即在图6D的基础上还包括如下步骤:
S205:UE接收第一节点发送的第二指示信息,第二指示信息中包括用于指示所述UE预期结束发送填充信号的第一结束时刻。
本发明实施例中第一节点发送的第二指示信息可以与第一指示信息一同发送给UE,例如通过授权频谱载波发送给UE。
本发明实施例中第二指示信息中包括的第一结束时刻可以是预期UE需要结束发送填充信号的结束子帧序号,但不局限于此。同一接入节点的授权频谱和非授权频谱之间可以是同步的,也可以是非同步的,在同步情况下,UE从授权频谱载波上接收到的填充信号结束子帧序号可以直接用来指示非授权频谱上填充信号的结束时刻;而在非同步情况下,UE还需要获取非授权频谱载波相比于授权频谱载波的偏移值,UE可以在授权频谱载波上接收以半静态的形式的偏移值。
S206:UE根据所述第一结束时刻,设置结束发送填充信号的第二结束时刻,其中,第二结束时刻不晚于第一结束时刻。
需要说明的是,本发明实施例各图示中的步骤编号仅是为了描述方便,并不限定执行的先后顺序,例如S205和S206的执行顺序并不限制是在S204之后执行,S205可以在S204之前执行,例如还可以在S203之前或与S203同步执行。
本发明实施例中以下结合实际应用对上述实施例涉及的信号处理方法进行举例说明。
本发明实施例中以第二指示信息中包括的第一结束时刻为结束子帧序号为例进行说明,UE可以根据第二指示信息中的结束子帧序号设置需要结束发送填充信号的第二结束时刻,本发明实施例以图1所示的场景,第二结束时刻为第二指示信息中指示的结束子帧边界为例进行说明,图6H为UE采用FBE策略,UE结束发送填充信号的时序示意图,图6I所示为UE采用LBE策略,UE结束发送填充信号的时序示意图。如图6H和图6I所示,若eNB0在结束子帧抢占到信道,则可以在抢占到信道后的下一个子帧(即UE需要接收数据的下一 个数据子帧)调度该UE;UE在该结束子帧的结束边界停止发送填充信号,并且在下一个子帧的起始边界开始检测eNB0的同步信号,导频信号和控制信道。由于UE在结束子帧之后转为接收数据,因此不再执行未完成的LBT发送、侦听或空闲过程,即使在结束边界处UE1未达到最大传输时间,也不再继续发送填充信号、IDP和CCA;并且也不再继续执行下一次的侦听以及填充信号发送的过程,直到收到下一个第一指示信息发送填充信号。
本发明实施例中图6H和图6I所示为UE进行一次侦听与填充信号发送过程的示意图,当然也可以执行不止一次的侦听与填充信号发送后停止发送填充信号,如图6J和图6K所示。图6J和图6K所示的过程,UE发送填充信号占用信道的时间或成功机会通常比较大,因此UE协助UE接入的第一节点抢占信道的效果更明显,但对周围CN节点的影响较大,较适用于接入节点长时间一直无法抢占到信道的情况。
本发明实施例中第一节点发送给UE的第一结束时刻,是第一节点预期能抢占到信道的时刻并提前通知给UE的,UE设置的结束发送填充信号的第二结束时刻不晚于第一结束时刻,故第一节点可能早于第二结束时刻抢占到信道,也可能在第二结束时刻第一节点仍未抢占到信道。
本发明实施例为解决第一节点在第二结束时刻未能成功抢占信道的问题,第一节点可以在第二结束时刻以后的下一个子帧继续通过授权频谱载波向UE发送第一指示信息指示UE发送填充信号,通知UE继续协助进行信道抢占,UE由于在第二结束时刻的下一个子帧检测不到同步信号,则判断第一节点没有抢占到信道,从而不需要继续进行信道的检测。
本发明实施例中为解决第一节点早于第二结束时刻抢占到信道并开始发送数据的问题,第一节点可以在第二结束时刻不调度UE,因为UE在第二结束时刻仍然在发送填充信号,可待UE停止发送填充信号之后再调度。
相比于FBE策略,LBE策略下接入节点抢占到信道的位置是随机的,更容易出现提前抢占到信道的情况,因此本发明实施例提供的基于接入节点向UE发送结束发送填充信号结束时刻指示的方法更适用于FBE策略,本发明实施例 中为了避免造成接入节点提前抢占信道导致UE不知道的情况发生,接入节点可以将预期结束发送填充信号的第一结束时刻设置为一个距离当前较近的时域位置,例如第一结束时刻对应的子帧之后的第2到5个子帧。
基于FBE策略的信道接入机制,由于接入节点进行侦听发送的过程具有固定帧结构,总是在IDP的尾部进行CCA侦听,因此UE应调整发送填充信号之前CCA起始时刻,尽量保障接入节点在执行CCA的时间内,信道仍然被UE的填充信号占用,即CN仍然处于退避状态,故本发明实施例在上述基于接入节点向UE发送结束发送填充信号结束时刻指示的方法实施例基础上还可包括如下步骤,如图6L所示:
S207:UE根据第一结束时刻,确定发送填充信号的CCA起始时刻。
本发明实施例中根据第一结束时刻,确定UE发送填充信号的CCA起始时刻可采用如下方式:
根据所述第一结束时刻、所述用户设备进行CCA的一个时隙的时间长度与所述用户设备最长持续信道占用时间,确定第一起始时刻;所述第一起始时刻与所述第一结束时刻之间的时间长度,等于UE进行CCA的一个时隙的时间长度与所述UE最长持续信道占用时间之和。
根据所述第一结束时刻、所述用户设备进行CCA的一个时隙的时间长度与所述第一节点进行CCA的一个时隙的时间长度,确定第二起始时刻;所述第二起始时刻与所述第一结束时刻之间的时间长度,等于所述UE进行CCA的一个时隙的时间长度与所述第一节点进行CCA的一个时隙的时间长度之和。
在所述第一起始时刻和第二起始时刻之间,确定UE发送填充信号的CCA起始时刻。
当然,本发明实施例中确定UE发送填充信号的CCA起始时刻并不限于上述的确定方式,例如还可以采用如下方式:
根据UE执行ECCA所用的时间长度、UE前一次执行ECCA所用的时间长度、或ECCA计数器最大值q,确定ECCA平均侦听时间长度,作为UE 执行下一次ECCA的预期时间长度。
根据所述第一结束时刻、UE执行ECCA平均侦听时间长度与所述用户设备最长持续信道占用时间,确定第三起始时刻;所述第三起始时刻与所述第一结束时刻之间的时间长度,等于UE执行ECCA平均侦听时间长度与所述UE最长持续信道占用时间之和。
根据所述第一结束时刻、UE执行ECCA平均侦听时间长度与第一节点进行CCA的一个时隙的时间长度,确定第四起始时刻;所述第四起始时刻与所述第一结束时刻之间的时间长度,等于所述UE执行ECCA平均侦听时间长度与所述第一节点进行CCA的一个时隙的时间长度之和。
在所述第三起始时刻和第四起始时刻之间,确定UE发送填充信号的CCA起始时刻。
本发明实施例以下结合实际应用对上述实施例涉及的信号处理方法进行举例说明。
本发明实施例中以图1所示的场景中,第二指示信息中包括的第一结束时刻为结束子帧序号为例进行说明,UE根据第二指示信息中的结束子帧序号设置需要结束发送填充信号的第二结束时刻为第二指示信息中指示的结束子帧边界为例进行说明。
基于FBE策略,UE侦听时间固定为一个CCA的一个时隙的时间长度,连续信道占用的最长时间为COT时间。基于LBE策略,如果CCA成功则不需要执行ECCA,因此UE最短可能的侦听时长也是一个CCA的一个时隙的时间长度,最长信道占用时间为(13/32)*q ms,即FBE和LBE策略下,UE最长持续信道占用时间都是确定的。因此可以确定UE的CCA的最早起始时刻和最晚起始时刻,最早起始时刻即本发明实施例中的第一起始时刻,最晚起始时刻即为本发明实施例中的第二起始时刻,其中,最早起始时刻到结束子帧结束边界时刻之间的时间为UE的CCA的一个时隙的时间长度与UE的最长持续信道占用时间之和,最晚起始时刻到结束子帧结束边界时刻之间的时间为UE的CCA的一个时隙的时间长度与第一节点的CCA的一个时隙的时间长度之和,如图 6M和6N所示分别为UE采用FBE策略和LBE策略下,UE执行一次侦听与填充信号发送情况下CCA起始时刻的确定时序图。对于UE执行多次侦听与填充信号发送过程的情况,类似地,UE的CCA最晚起始时刻与单次发送过程相同,其到结束子帧结束边界时刻的时间为UE的CCA的一个时隙的时间长度与第一节点的CCA的一个时隙的时间长度之和;基于FBE策略,UE的CCA最早起始时刻到结束子帧结束边界的时间为多次CCA与COT的时间之和,基于LBE策略,UE的CCA最早起始时刻到结束子帧结束边界的时间可以设置为多次CCA与最长持续信道占用时间之和。
本发明实施例上述将UE的CCA起始时刻设置在第一起始时刻和第二起始时刻之间,第一起始时刻与第一结束时刻之间的时间长度,等于UE进行CCA的一个时隙的时间长度与所述UE最长持续信道占用时间之和;第二起始时刻与所述第一结束时刻之间的时间长度,等于所述UE进行CCA的一个时隙的时间长度与所述第一节点进行CCA的一个时隙的时间长度之和,故通过本发明可以使接入节点在执行CCA的时间内,信道仍然被UE的填充信号占用,即CN仍然处于退避状态,提高接入节点抢占信道成功的机会,并且通过本发明还可以避免填充信号由于最长信道占用时间的限制而早于结束子帧的结束边界结束,UE周围的CN有可能在UE结束发送填充信号后的这段时间抢占到信道的情况发生。
可选的,在FBE策略下,为了让第一节点在CCA检测的时刻的信道更加干净,UE可以在结束子帧的结束边界提前一小段时间停止发送填充信号,这段时间等于接入节点的进行CCA使用的一个时隙的时间长度,即第二结束时刻与第一结束时刻之间的时间长度,等于第一节点进行CCA使用的一个时隙的时间长度。
本发明实施例中通过设置第二结束时刻与第一结束时刻之间的时间长度等于第一节点CCA使用的一个时隙的时间长度,使得第一节点在执行CCA时不会检测到来自本小区UE的干扰能量,还可以使UE发射填充信号的发射功率不受限制,可以用更大的发射功率使更多的CN退避,从而使第一节点检测到 的干扰能量更低。
进一步的,由于Wifi的平均侦听时长较短(初始回退窗为1~15个Wifi时隙,20MHz带宽下Wifi执行CCA的一个时隙的时间长度为9μs,即最短侦听时长为9μs),因此在CCA侦听时间内可能会有AP更早占用信道的情况发生,使第一节点检测到信道忙,故本发明实施例中可设置第一节点的CCA的最短时隙长度是20μs,使得CN节点剩余的回退窗长度在此范围内概率减小。
本发明上述基于接入节点向UE发送结束发送填充信号结束时刻指示的方法实施例中,为解决UE在第二结束时刻未能成功抢占信道的问题,采用第一节点在第二结束时刻以后的下一个子帧继续通过授权频谱载波向UE发送第一指示信息指示UE发送填充信号,通知UE继续协助进行信道抢占的方式,会在一定程度上造成信令开销过大,故本发明另一可选的实施例,可通过向UE发送指示所述用户设备持续发送填充信号的时域长度的方式,UE收到该指示后立即执行侦听与发送填充信号的过程,抢占到信道后持续发送填充信号直到第一节点所指示的时域长度,这样第一节点通过发送一次第一指示信息指示UE发送填充信号,就可以确保UE一定会发出一次填充信号,即在图1或图2所示的实施例的基础上还包括如下步骤:UE接收所述第一节点发送的第三指示信息,所述第三指示信息中包括用于指示所述用户设备持续发送填充信号的时域长度;所述UE根据所述第三指示信息中包括的所述时域长度,配置持续发送所述填充信号的时域长度。
本发明实施例以下以图6D所示的实施例为例进行举例说明,具体实现过程如图6O所示,即在图6D的基础上还包括如下步骤:
S208:UE接收第一节点发送的第三指示信息,第三指示信息中包括用于指示所述UE持续发送填充信号的时域长度。
S209:UE根据第三指示信息中包括的时域长度,配置持续发送填充信号的时域长度。
需要说明的是,本发明实施例各图示中的步骤编号仅是为了描述方便,并不限定执行的先后顺序,例如S208和S209的执行顺序并不限制是在S204 之后执行,S208可以在S204之前执行,例如还可以在S203之前或与S203同步执行。
本发明实施例中以下结合实际应用对上述实施例涉及的基于接入节点发送时域长度指示的方法指示UE发送填充信号的信号处理方法进行举例说明。
图6P和图6Q所示分别UE采用FBE策略和LBE策略下,UE执行侦听与填充信号发送的过程时序示意图。eNB0在第三指示信息中指示UE发送填充信号的时域长度,例如3ms,UE收到第三指示信息后配置发送填充信号的是时域长度为固定的长度,例如配置的发送填充信号的时域长度也为3ms,则UE收到第三指示信息后立即执行CCA侦听信道,并在侦听成功后持续发送3ms的填充信号。
本发明实施例中由于eNB0并不确定UE发送填充信号的截止时间,有可能在UE发送填充信号的过程中抢占到信道,因此存在eNB抢到信道后开始发送数据信息但并不调度该UE的情况;或者,UE的填充信号中包含导频信号,eNB0通过检测UE填充信号中的导频信息获知UE开始发送填充信号的起始时刻,并结合UE发送填充信号的时域长度,确定UE发送填充信号的结束时刻,在结束时刻之后调度UE的情况。
本发明实施例中为了解决第一节点提前抢占到信道但UE仍然在发送填充信号,从而无法接收第一节点发送数据的问题,或者第一节点一直无法抢占到信道,需要更换其他UE发送填充信号的问题,第一节点可以向发送填充信号的UE发送立即结束填充信号发送的指示信息,使UE在收到该指示信息后在立即停止发送填充信号。
本发明实施例以下以图6D所示的实施例为例进行举例说明,具体实现过程如图6R所示,即在图6D的基础上还包括如下步骤:
S210:UE接收第一节点发送的第四指示信息。
所述第四指示信息用于指示UE立即结束发送填充信号。
S211:UE根据第四指示信息停止进行CCA或者停止发送填充信号。
本发明实施例中UE可在接收到第一指示信息后,持续执行CCA与填充 信号发送的过程,即当前填充信号达到最长信道占用时间后,立即进入下一次填充信号的侦听阶段,循环往复,直至接收到第一节点发送的第四指示信息后,停止进行CCA或者停止发送填充信号。
本发明实施例中UE还可在接收到第二指示信息或者第三指示信息后,进行CCA与填充信号发送的过程,在接收到第一节点发送的第四指示信息时,实时停止填充信号的发送。
需要说明的是,由于第一节点有可能在下一个子帧调度发送填充信号的UE,该UE可以在下一个子帧检测第一节点的同步和控制信道。
需要说明的是,本发明实施例中涉及的第四指示信息与第二指示信息不同,不需要指示停止发送填充信号的子帧序号,而只需1比特的标识符,UE接收到该第四指示信息后在当前子帧立即停止发送填充信号。
图6S和图6T所示分别UE采用FBE策略和LBE策略下,UE执行侦听与填充信号发送的过程时序示意图。eNB0向UE发送第四指示信息,UE收到第四指示信息后立即停止填充信号的发送。
本发明实施例提供的信号处理方法,UE接入的第一节点向UE发送用于指示所述UE发送填充信号的第一指示信息,UE根据该第一指示信息进行CCA,并在检测到信道空闲的情况下,在所述第一节点使用的非授权频谱载波上发送填充信号,故可使与第一节点竞争信道的节点进行CCA的能量检测过程中,检测到信道被占用而退避为空闲状态,并释放信道,提高UE接入的节点成功抢占到信道的机会。
进一步的,本发明实施例提供的信号处理方法,不需要eNB降低发射功率,从而可以避免有用信号接收功率的下降和隐藏节点带来的干扰问题,有效保障边缘UE的服务质量。本发明也不需要执行载波切换,这种方法使用场景更广泛,例如每个载波上信道都拥塞,或者eNB只能聚合单个非授权载波且授权载波上业务量较大等等。更进一步的,本发明不需要额外引入模块,不会导致设计和实现复杂度提高,而且可以有效解决由于周围发送节点“数据传输接力”而导致eNB一直无法抢占到信道的问题。
图7A所示为本发明实施例提供的另一信号处理方法流程图,图7A所示的方法执行主体为第一节点,如图7A所示,包括:
S301:第一节点确定第一指示信息,第一指示信息用于指示UE进行CCA,并在检测到信道空闲的情况下,在所述第一节点使用的非授权频谱载波上发送填充信号。
本发明实施例中填充信号,具有使UE周围的CN在第一节点使用的非授权频谱载波上进行CCA的能量检测的功率值持续超出设定的门限值,确定信道被占用进而退避为空闲,并协助第一节点在第一节点使用的非授权频谱载波上占用信道的作用。所述第一节点为所述UE接入的节点,所述第二节点是与所述第一节点竞争信道的节点。
S302:第一节点向UE发送所述第一指示信息。
本发明实施例中第一节点向UE发送用于指示UE发送填充信号的第一指示信息,使得UE可以根据该第一指示信息进行CCA,并在检测到信道空闲的情况下,在所述第一节点使用的非授权频谱载波上发送填充信号,故可使与第一节点竞争信道的节点进行CCA的能量检测过程中,检测到信道被占用而退避为空闲状态,并释放信道,提高第一节点成功抢占到信道的机会。
本发明实施例中第一节点若在一定的时间内,每次执行CCA都检测到信道被占用,则可在授权频谱载波上向接入到第一节点的部分UE发送第一指示信息,该部分UE一般为距离CN地理位置较近的UE。
可选的,第一节点可以根据UE的测量反馈确定向哪些UE发送第一指示信息,例如第一节点向UE发送所述第一指示信息之前,还包括如下步骤,如图7B所示:
S301a:第一节点接收UE上报的、在第一节点侦听的非授权频谱载波上对载波全带宽上的无线信号进行能量检测的检测结果。
本发明实施例中用于表征所述第一节点是否发送第一指示信息的检测结果可以是将检测到的载波全带宽上的能量量化为一个能量等级,也可以是直接表明是否发送填充信号的请求信息。
S301b:第一节点根据所述检测结果,确定需要接收第一指示信息的UE。
本发明实施例中第一节点可以根据检测结果,选择发送请求信息的UE或者能量等级比较高的UE作为发送填充信号的UE,进而向相关UE发送第一指示信息。
当然,本发明实施例中第一节点可以根据已发送第一指示信息息后的效果判断是否继续向接收该第一指示信息的UE发送填充信号,例如,如果连续几次给设定的UE发送第一指示信息,第一节点执行CCA检测到信道上的接收功率仍然没有明显降低从而无法成功抢占信道,说明该接收该第一指示信息的UE的填充信号无法使CN退避或UE无法抢占到发送填充信号的机会,则第一节点可以改为选择向除该设定的UE以外的其他UE发送第一指示信息。
可选的,本发明实施例在图7A或图7B所示的方法流程的基础上,第一节点还可向UE发送结束发送填充信号的结束时刻指示。本发明实施例以图7B为例进行说明,实现方法如图7C所示,还包括:
S303:第一节点向UE发送第二指示信息,第二指示信息中包括用于指示所述UE预期结束发送填充信号的第一结束时刻。
进一步的,为了提高第一节点成功调度到第一节点指示发送填充信号的UE,本发明实施例中第一节点在第一结束时刻之前不进行所述UE的调度,可在第一结束时刻之后、且在所述第一节点抢占到信道的情况下,调度所述UE。
可选的,本发明实施例在图7A或图7B所示的方法流程的基础上,第一节点还可向UE发送指示结束发送填充信号的时域长度的信息,本发明实施例以图7B为例进行说明,实现方法如图7D所示,还包括:
S304:第一节点向所述UE发送第三指示信息,第三指示信息中包括用于指示所述UE持续发送填充信号的时域长度。
进一步的,为了提高第一节点成功调度到第一节点指示发送填充信号的UE,本发明实施例中第一节点在停止发送填充信号之前不进行所述UE的调 度,即本发明实施例中第一节点可检测所述UE发送填充信号的起始时刻;根据所述UE发送填充信号的起始时刻和所述第三指示信息中包括的时域长度,确定所述UE停止发送填充信号的时刻;在确定的UE停止发送填充信号的时刻后、且在所述第一节点抢占到信道的情况下,所述第一节点调度所述UE。
可选的,本发明实施例在图7A至图7D任一所示的方法流程的基础上,第一节点还可向UE发送第四指示信息,本发明实施例以图7D为例进行说明,实现方法如图7E所示,还包括:
S305:第一节点向所述UE发送第四指示信息,所述第四指示信息用于指示UE立即结束发送填充信号。
进一步的,为了提高第一节点成功调度到第一节点指示发送填充信号的UE,本发明实施例中第一节点在停止发送填充信号之前不进行所述UE的调度,即本发明实施例中第一节点可在发送所述第四指示信息后、且在所述第一节点抢占到信道的情况下,所述第一节点调度所述UE。
本发明实施例中第一节点向UE发送包括预期结束发送填充信号的第一结束时刻的第二指示信息,向UE发送包括指示所述UE持续发送填充信号的时域长度的第三指示信息,或者向UE发送第四指示信息,使得UE可在相应的时刻停止发送填充信号或者停止进行CCA,并准备接收数据业务。
需要说明的是,本发明实施例中对于第一节点执行相应的信号处理方法描述不够详尽的地方,可参阅UE执行信号处理方法的执行过程,在此不再赘述。
本领域内的技术人员应明白,本发明的实施例可提供为方法、系统、或计算机程序产品。因此,本发明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,本发明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。
本发明是参照根据本发明实施例的方法、设备(系统)、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。
尽管已描述了本发明的优选实施例,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优选实施例以及落入本发明范围的所有变更和修改。
显然,本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实施例的精神和范围。这样,倘若本发明实施例的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。

Claims (36)

  1. 一种用户设备,其特征在于,包括:
    接收单元,用于接收第一节点发送的第一指示信息,所述第一指示信息用于指示所述用户设备发送填充信号;
    发送单元,用于根据所述接收单元接收到的所述第一指示信息进行空闲信道评测,并在检测到信道空闲的情况下,在所述第一节点使用的非授权频谱载波上发送填充信号。
  2. 如权利要求1所述的用户设备,其特征在于,所述接收单元在授权频谱载波上接收所述第一指示信息。
  3. 如权利要求1或2所述的用户设备,其特征在于,所述发送单元在所述第一节点使用的非授权频谱载波全带宽上发送填充信号。
  4. 如权利要求1-3任一项所述的用户设备,其特征在于,所述用户设备还包括检测单元和上报单元,其中,
    所述检测单元,用于在所述接收单元接收第一节点发送的第一指示信息之前,在所述第一节点侦听的非授权频谱载波上对载波全带宽上的无线信号进行能量检测,得到用于表征所述第一节点是否发送所述第一指示信息的检测结果;
    所述上报单元,用于向所述第一节点上报所述检测单元得到的检测结果。
  5. 如权利要求1-4任一项所述的用户设备,其特征在于,所述接收单元,还用于:
    接收所述第一节点发送的第二指示信息,所述第二指示信息中包括用于指示所述用户设备预期结束发送填充信号的第一结束时刻;
    所述用户设备还包括设置单元,其中,
    所述设置单元,用于根据所述接收单元接收的第一结束时刻,设置结束发送所述填充信号的第二结束时刻,所述第二结束时刻不晚于所述第一结束时刻。
  6. 如权利要求5所述的用户设备,其特征在于,所述用户设备还包括确定单元,其中,
    所述确定单元,用于在所述发送单元根据所述第一指示信息进行空闲信道评测之前,根据所述接收单元接收到的第二指示信息中的第一结束时刻,确定发送填充信号的空闲信道评测起始时刻。
  7. 如权利要求6所述的用户设备,其特征在于,所述确定单元,具体用于按如下方式根据所述第一结束时刻,确定发送填充信号的空闲信道评测起始时刻:
    根据所述第一结束时刻、所述用户设备进行空闲信道评测的一个时隙的时间长度与所述用户设备最长持续信道占用时间,确定第一起始时刻;
    所述第一起始时刻与所述第一结束时刻之间的时间长度,等于所述用户设备进行空闲信道评测的一个时隙的时间长度与所述用户设备最长持续信道占用时间之和;
    根据所述第一结束时刻、所述用户设备进行空闲信道评测的一个时隙的时间长度与所述第一节点进行空闲信道评测的一个时隙的时间长度,确定第二起始时刻;
    所述第二起始时刻与所述第一结束时刻之间的时间长度,等于所述用户设备进行空闲信道评测的一个时隙的时间长度与所述第一节点进行空闲信道评测的一个时隙的时间长度之和;
    在所述第一起始时刻和第二起始时刻之间,确定空闲信道评测起始时刻。
  8. 如权利要求5-7任一项所述的用户设备,其特征在于,所述第二结束时刻与所述第一结束时刻之间的时间长度,等于所述第一节点进行空闲信道评测使用的一个时隙的时间长度。
  9. 如权利要求1-4任一项所述的用户设备,其特征在于,所述接收单元,还用于:
    接收所述第一节点发送的第三指示信息,所述第三指示信息中包括用于指示所述用户设备持续发送填充信号的时域长度;
    所述用户设备还包括配置单元,其中,
    所述配置单元,用于根据所述第三指示信息中包括的所述时域长度,配置持续发送所述填充信号的时域长度。
  10. 如权利要求1-8任一项所述的用户设备,其特征在于,所述接收单元,还用于:
    接收所述第一节点发送的第四指示信息,所述第四指示信息用于指示UE立即结束发送填充信号,依据所述第四指示信息,停止进行空闲信道评测或者停止发送填充信号。
  11. 一种节点设备,其特征在于,包括:
    确定单元,用于确定第一指示信息,所述第一指示信息用于指示用户设备进行空闲信道评测,并在检测到信道空闲的情况下,在所述节点设备使用的非授权频谱载波上发送填充信号;
    发送单元,用于向用户设备发送所述确定单元确定的所述第一指示信息。
  12. 如权利要求11所述的节点设备,其特征在于,所述节点设备还包括接收单元,其中,
    所述接收单元,用于接收用户设备上报的、在所述节点设备侦听的非授权频谱载波上对载波全带宽上的无线信号进行能量检测的检测结果;
    所述确定单元,还用于根据所述接收单元接收的检测结果,确定需要接收所述第一指示信息的用户设备。
  13. 如权利要求11或12所述的节点设备,其特征在于,所述发送单元,还用于:
    向所述用户设备发送第二指示信息,所述第二指示信息中包括用于指示所述用户设备预期结束发送填充信号的第一结束时刻。
  14. 如权利要求13所述的节点设备,其特征在于,所述节点设备还包括调度单元,其中,
    所述调度单元,用于在所述第一结束时刻后、且在所述节点设备抢占到信道的情况下,调度所述用户设备。
  15. 权利要求11或12所述的节点设备,其特征在于,所述发送单元,还用于:
    向所述用户设备发送第三指示信息,所述第三指示信息中包括用于指示所述用户设备持续发送填充信号的时域长度。
  16. 如权利要求15所述的节点设备,其特征在于,所述节点设备还包括检测单元和调度单元,其中,
    所述检测单元,用于检测用户设备发送填充信号的起始时刻;
    所述确定单元,还用于根据用户设备发送填充信号的起始时刻和所述第三指示信息中包括的时域长度,确定用户设备停止发送填充信号的时刻;
    所述调度单元,用于在所述确定单元确定的用户设备停止发送填充信号的时刻后、且在所述节点设备抢占到信道的情况下,调度所述用户设备。
  17. 如权利要求11、12、13或15所述的节点设备,其特征在于,所述发送单元,还用于:
    向所述用户设备发送第四指示信息,所述第四指示信息用于指示所述用户设备立即结束发送填充信号。
  18. 如权利要求17所述的节点设备,其特征在于,所述节点设备还包括调度单元,其中,
    所述调度单元,用于在所述发送单元发送所述第四指示信息后、且在所述节点设备抢占到信道的情况下,调度所述用户设备。
  19. 一种信号处理方法,其特征在于,包括:
    用户设备接收第一节点发送的第一指示信息,所述第一指示信息用于指示所述用户设备发送填充信号;
    所述用户设备根据所述第一指示信息进行空闲信道评测,并在检测到信道空闲的情况下,在所述第一节点使用的非授权频谱载波上发送填充信号。
  20. 如权利要求19所述的方法,其特征在于,所述用户设备在授权频谱载波上接收所述第一指示信息。
  21. 如权利要求19或20所述的方法,其特征在于,所述用户设备在所 述第一节点使用的非授权频谱载波全带宽上发送填充信号。
  22. 如权利要求19-21任一项所述的方法,其特征在于,所述用户设备接收第一节点发送的第一指示信息之前,还包括:
    所述用户设备在所述第一节点侦听的非授权频谱载波上对载波全带宽上的无线信号进行能量检测,得到用于表征所述第一节点是否发送所述第一指示信息的检测结果;
    所述用户设备向所述第一节点上报所述检测结果。
  23. 如权利要求19-22任一项所述的方法,其特征在于,所述方法还包括:
    所述用户设备接收所述第一节点发送的第二指示信息,所述第二指示信息中包括用于指示所述用户设备预期结束发送填充信号的第一结束时刻;
    所述用户设备根据所述第一结束时刻,设置结束发送所述填充信号的第二结束时刻,所述第二结束时刻不晚于所述第一结束时刻。
  24. 如权利要求23所述的方法,其特征在于,所述用户设备根据所述第一指示信息进行空闲信道评测之前,所述方法还包括:
    所述用户设备根据所述第一结束时刻,确定发送填充信号的空闲信道评测起始时刻。
  25. 如权利要求24所述的方法,其特征在于,所述用户设备根据所述第一结束时刻,确定发送填充信号的空闲信道评测起始时刻,包括:
    根据所述第一结束时刻、所述用户设备进行空闲信道评测的一个时隙的时间长度与所述用户设备最长持续信道占用时间,确定第一起始时刻;
    所述第一起始时刻与所述第一结束时刻之间的时间长度,等于所述用户设备进行空闲信道评测的一个时隙的时间长度与所述用户设备最长持续信道占用时间之和;
    根据所述第一结束时刻、所述用户设备进行空闲信道评测的一个时隙的时间长度与所述第一节点进行空闲信道评测的一个时隙的时间长度,确定第二起始时刻;
    所述第二起始时刻与所述第一结束时刻之间的时间长度,等于所述用户 设备进行空闲信道评测的一个时隙的时间长度与所述第一节点进行空闲信道评测的一个时隙的时间长度之和;
    在所述第一起始时刻和第二起始时刻之间,确定空闲信道评测起始时刻。
  26. 如权利要求23-25任一项所述的方法,其特征在于,所述第二结束时刻与所述第一结束时刻之间的时间长度,等于所述第一节点进行空闲信道评测使用的一个时隙的时间长度。
  27. 如权利要求19-22任一项所述的方法,其特征在于,所述方法还包括:
    所述用户设备接收所述第一节点发送的第三指示信息,所述第三指示信息中包括用于指示所述用户设备持续发送填充信号的时域长度;
    所述用户设备根据所述第三指示信息中包括的所述时域长度,配置持续发送所述填充信号的时域长度。
  28. 如权利要求19-26任一项所述的方法,其特征在于,所述方法还包括:
    所述用户设备接收所述第一节点发送的第四指示信息,所述第四指示信息用于指示UE立即结束发送填充信号;
    所述用户设备依据所述第四指示信息,停止进行空闲信道评测或者停止发送填充信号。
  29. 一种信号处理方法,其特征在于,包括:
    第一节点确定第一指示信息,所述第一指示信息用于指示用户设备进行空闲信道评测,并在检测到信道空闲的情况下,在所述第一节点使用的非授权频谱载波上发送填充信号;
    所述第一节点向用户设备发送所述第一指示信息。
  30. 如权利要求29所述的方法,其特征在于,所述第一节点向用户设备发送所述第一指示信息之前,所述方法还包括:
    所述第一节点接收用户设备上报的、在所述第一节点侦听的非授权频谱载波上对载波全带宽上的无线信号进行能量检测的检测结果;
    所述第一节点根据所述检测结果,确定需要接收所述第一指示信息的用户设备。
  31. 如权利要求29或30所述的方法,其特征在于,所述方法还包括:
    所述第一节点向所述用户设备发送第二指示信息,所述第二指示信息中包括用于指示所述用户设备预期结束发送填充信号的第一结束时刻。
  32. 如权利要求31所述的方法,其特征在于,所述方法还包括:
    在所述第一结束时刻后、且在所述第一节点抢占到信道的情况下,所述第一节点调度所述用户设备。
  33. 如权利要求29或30所述的方法,其特征在于,所述方法还包括:
    所述第一节点向所述用户设备发送第三指示信息,所述第三指示信息中包括用于指示所述用户设备持续发送填充信号的时域长度。
  34. 如权利要求33所述的方法,其特征在于,所述方法还包括:
    检测用户设备发送填充信号的起始时刻;
    根据用户设备发送填充信号的起始时刻和所述第三指示信息中包括的时域长度,确定用户设备停止发送填充信号的时刻;
    在确定的用户设备停止发送填充信号的时刻后、且在所述第一节点抢占到信道的情况下,所述第一节点调度所述用户设备。
  35. 如权利要求19、20、21或33所述的方法,其特征在于,所述方法还包括:
    所述第一节点向所述用户设备发送第四指示信息,所述第四指示信息用于指示所述用户设备立即结束发送填充信号。
  36. 如权利要求35所述的方法,其特征在于,所述方法还包括:
    在发送所述第四指示信息后、且在所述第一节点抢占到信道的情况下,所述第一节点调度所述用户设备。
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