WO2015165035A1 - Procédé pour utiliser un nœud de réseau et une ressource spectrale - Google Patents

Procédé pour utiliser un nœud de réseau et une ressource spectrale Download PDF

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Publication number
WO2015165035A1
WO2015165035A1 PCT/CN2014/076465 CN2014076465W WO2015165035A1 WO 2015165035 A1 WO2015165035 A1 WO 2015165035A1 CN 2014076465 W CN2014076465 W CN 2014076465W WO 2015165035 A1 WO2015165035 A1 WO 2015165035A1
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WIPO (PCT)
Prior art keywords
system message
time
broadcast
network node
unlicensed spectrum
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PCT/CN2014/076465
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English (en)
Chinese (zh)
Inventor
权威
李秉肇
杨晓东
胡振兴
张戬
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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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/076465 priority Critical patent/WO2015165035A1/fr
Priority to CN201480000533.8A priority patent/CN105284058B/zh
Publication of WO2015165035A1 publication Critical patent/WO2015165035A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method for using a network node and a spectrum resource. Background technique
  • the spectrum is the basis of wireless communication.
  • the spectrum resources mainly include licensed spectrum resources and unlicensed spectrum resources.
  • the unlicensed spectrum resources are more than the licensed spectrum resources.
  • WiFi Wireless Reality
  • WiFi has drawbacks in terms of mobility, security, quality of service, and simultaneous handling of multi-user scheduling.
  • Long-term Evolution (LTE) equipment is applied to unlicensed frequency, which not only can effectively utilize unlicensed spectrum resources, but also provide more efficient wireless access and meet the growing mobile broadband. Service needs. Therefore, in a future mobile communication scenario, an LTE base station device and a WiFi access point device may exist on the unlicensed spectrum.
  • one of the applications of the LTE base station device using the unlicensed spectrum may be an unlicensed frequency.
  • LTE user equipment User Equipment
  • a secondary cell is configured for the UE, so that the LTE base station can utilize the unlicensed spectrum and the UE for data communication.
  • Embodiments of the present invention provide a method for using a network node and a spectrum resource to achieve the purpose of coordinating the use of an unlicensed spectrum between network nodes.
  • the technical solution drawn by the present invention is:
  • the present invention provides a network node, where the network node is a first network node, and includes:
  • a system message monitoring module configured to monitor a second system message broadcast by a second network node that uses an unlicensed spectrum
  • a related information obtaining module configured to: if the system message monitoring module monitors at least one of the second system messages, acquire, from the monitored second system message, each broadcast of the second system message a second broadcast time, and a manner of using the unlicensed spectrum;
  • a broadcast time selection module configured to select, at other times than the second broadcast time acquired by the related information acquiring module, a first broadcast time occupied by each broadcast of the first system message, so as to be in the first broadcast Broadcasting the first system message in time;
  • the available frequency usage module is configured to determine, according to the usage manner of the unlicensed spectrum acquired by the related information acquiring module, an available time of using the unlicensed spectrum, and use the unlicensed spectrum in the available time. Communicating with the user equipment, the available time is a length of time other than the first broadcast time and the second broadcast time in each resource usage period.
  • the system message monitoring module includes: a message receiving submodule, configured to receive a system message broadcast by the second network node;
  • a first determining submodule configured to: if the system message received by the message receiving submodule includes a system message broadcast by another second network node, extracting each of the received system message and the other system message a different system message, and the different system message is used as the second system message that is monitored;
  • a second determining submodule configured to: if the second system message received by the message receiving submodule does not include a system message broadcast by another second network node, use the received system message as The second system message that is being monitored;
  • system message monitoring module includes:
  • a notification sending sub-module configured to send a monitoring notification to the user equipment, so that the user equipment receives the system message broadcast by the second network node after receiving the monitoring notification;
  • a receiving submodule configured to receive a monitoring result that is reported by the user equipment and includes at least one system message
  • a third determining submodule configured to: if the system message in the monitoring result received by the result receiving submodule includes a system message broadcast by another second network node, the system message from the monitoring result and the other system Extracting each dissimilar system message in the message, and using the dissimilar system message as the second system message that is monitored;
  • a fourth determining submodule configured to: if the system message in the monitoring result received by the result receiving submodule does not include a system message broadcast by another second network node, use the system message in the monitoring result as the monitored Second system message;
  • system message monitoring module includes:
  • a message receiving submodule configured to receive a system message broadcast by the second network node
  • a notification sending submodule configured to send a monitoring notification to the user equipment, so that the user equipment receives the system message broadcast by the second network node after receiving the monitoring notification;
  • a receiving submodule configured to receive a monitoring result that is reported by the user equipment and includes at least one system message
  • a fifth determining submodule configured to: if the system message received by the message receiving submodule and/or the system message in the monitoring result received by the result receiving submodule includes a system message broadcast by another second network node, Extracting each dissimilar system message from the received system message, the system message in the interception result, and the other system message, and using the dissimilar system message as the monitored second system message;
  • a sixth determining submodule configured to: if the system message received by the message receiving submodule and/or the system message in the monitoring result received by the result receiving submodule does not include a system message broadcast by another second network node, And extracting each dissimilar system message from the received system message and the system message in the interception result, and using the dissimilar system message as the monitored second system message.
  • the second system message includes a second broadcast period of the second system message
  • the message receiving sub-module is configured to receive a system message broadcast by the second network node in the first receiving time, where the first receiving time is not less than a longest period of all the second broadcasting periods.
  • the second system message includes a second broadcast period of the second system message
  • the notification sending sub-module is configured to send a monitoring notification to the user equipment, so that the user equipment receives the system message broadcast by the second network node in the second receiving time after receiving the monitoring notification, where The second reception time is not less than the longest period of all the second broadcast periods.
  • the second system message includes a node listening time for monitoring a new network node that uses the unlicensed spectrum, where the node listening time is The length of the time in the resource usage period other than the second broadcast time;
  • the broadcast time selection module includes:
  • a listening time acquisition submodule configured to obtain the node monitoring time from the second system message
  • the broadcast time determining submodule is configured to use the node listening time acquired by the listening time acquisition submodule as the first broadcast time for broadcasting the first system message.
  • the node monitoring time is:
  • the network node further includes:
  • An interval determining module configured to determine, during the resource usage period, the monitored at least one second system, before the listening time acquisition submodule acquires the node listening time from the second system message The interval between each adjacent two second systems in the message, the broadcast interval of the packet;
  • the executing module is configured to use the monitoring device if at least one broadcast interval time greater than or equal to the set interval time exists in each broadcast interval determined by the interval determining module
  • the time acquisition sub-module performs the step of obtaining the node listening time from the second system message.
  • the non The licensed spectrum is used in the following manner: non-competitive mode, or competitive mode, or using the non-contention mode to use non-contention type spectrum resources and using the contention type to use the spectrum type of the competition type.
  • the non-competitive manner is specifically:
  • the broadcast interval between adjacent system messages is the time at which the network node that broadcasts the previous system message in the adjacent system message uses the unlicensed spectrum
  • each of the network nodes uses the unlicensed spectrum in a preset order, and each network node broadcasts in the system message of each network node by using the unlicensed spectrum during the resource usage period;
  • each of the network nodes uses the unlicensed spectrum in a preset order, and each network node uses the unlicensed spectrum in the resource usage period for the same time;
  • each of the network nodes uses the unlicensed spectrum in a preset order, and each network node uses the unlicensed spectrum for a preset time length.
  • the contention manner is specifically:
  • Each network node monitors whether other network nodes use the unlicensed spectrum, and if no other network nodes are used to monitor the unlicensed spectrum, continue to monitor whether there are other network nodes using the non-permitted time in the first backoff time.
  • Authorized spectrum
  • the present invention provides a method for using a spectrum resource, including:
  • the first network node listens to the second system broadcast broadcast by the second network node that uses the unlicensed spectrum Obtaining, by the intercepted second system message, the second broadcast time occupied by each broadcast of the second system message, and the unlicensed spectrum, if at least one of the second system messages is received. Way of use;
  • the first network node selects a first broadcast time occupied by the first system message every time, except for the second broadcast time, to broadcast the first system message during the first broadcast time. ;
  • the available time is The length of time in each resource usage period other than the first broadcast time and the second broadcast time.
  • the first network node listening to the second system message broadcast by the second network node that uses the unlicensed spectrum, includes:
  • the first network node sends a monitoring notification to the user equipment, so that the user equipment receives the system message broadcast by the second network node after receiving the monitoring notification, and receives the monitoring that is sent by the user equipment and includes at least one system message.
  • Result if the system message in the monitoring result includes a system message broadcast by another second network node, extracting each dissimilar system message from the system message in the monitoring result and the other system message, and The different system message is used as the second system message that is monitored; if the system message in the monitoring result does not include the system message broadcast by the other second network node, the system message in the monitoring result is monitored as Second system message;
  • the first network node receives the system message broadcast by the second network node, and sends a monitoring notification to the user equipment, so that the user equipment receives the system message broadcast by the second network node after receiving the monitoring notification, and receives the user equipment.
  • the reported monitoring result containing at least one system message; If the received system message and/or the system message in the interception result includes a system message broadcast by another second network node, the received system message, the system message in the interception result, and Extracting each dissimilar system message from the other system message, and using the dissimilar system message as the monitored second system message; if the received system message and/or the system message in the interception result
  • the system message broadcasted by the other second network node is not included, and each dissimilar system message is extracted from the received system message and the system message in the interception result, and the dissimilar system message is used as a monitor.
  • the second system message to.
  • the second system message includes a second broadcast period of the second system message, where the first network node receives
  • the system message broadcast by the second network node includes:
  • the first network node receives the system message broadcast by the second network node in the first receiving time, wherein the first receiving time is not less than the longest period of all the second broadcasting periods.
  • the second system message includes a second broadcast period of the second system message;
  • the user equipment sends a monitoring notification, so that the user equipment receives the system message broadcast by the second network node after receiving the monitoring notification, including:
  • the first network node sends a monitoring notification to the user equipment, so that the user equipment receives the system message broadcast by the second network node in the second receiving time after receiving the monitoring notification, where the second receiving time is not less than The longest period of all second broadcast cycles.
  • the second system message includes a node listening time for monitoring a new network node that uses the unlicensed spectrum, where the node listening time is The length of time in the resource usage period other than the second broadcast time; the selecting the first broadcast time occupied by the first system message, including:
  • the first network node acquires the node listening time from the second system message, and uses the node listening time as a first broadcast time for broadcasting the first system message.
  • the node listening time is:
  • the method before the acquiring the node monitoring time from the second system message, the method further includes:
  • the non The licensed spectrum is used in the following manner: non-competitive mode, or competitive mode, or using the non-contention mode to use non-contention type spectrum resources and using the contention type to use the spectrum type of the competition type.
  • the non-contention mode is specifically:
  • the broadcast interval between adjacent system messages is the time at which the network node that broadcasts the previous system message in the adjacent system message uses the unlicensed spectrum
  • each of the network nodes uses the unlicensed spectrum in a preset order, and each network node broadcasts in the system message of each network node by using the unlicensed spectrum during the resource usage period;
  • each of the network nodes uses the unlicensed spectrum in a preset order, and each network node uses the unlicensed spectrum in the resource usage period for the same time;
  • each of the network nodes uses the unlicensed spectrum in a preset order, and each network node uses the unlicensed spectrum for a preset time length.
  • the contention manner is specifically:
  • Each network node monitors whether other network nodes use the unlicensed spectrum, and if no other network nodes are used to monitor the unlicensed spectrum, continue to monitor whether there are other network nodes using the non-permitted time in the first backoff time.
  • Authorized spectrum
  • the unlicensed spectrum is not monitored by the other network node during the first backoff time, the unlicensed spectrum is used in the first use time; if the first backoff time is monitored If the other network node is used to use the unlicensed spectrum, it continues to monitor whether other network nodes use the unlicensed spectrum; wherein the first backoff time is proportional to the first usage time.
  • the method for using the network node and the spectrum resource provided by the embodiment of the present invention so that the first network node determines, by using the second system message that is broadcast by the at least one second network node that has used the unlicensed spectrum, before using the unlicensed spectrum.
  • the occupancy time of the second system message on the unlicensed spectrum and the manner in which the second network node uses the unlicensed spectrum so that the first network node can broadcast its first time outside the time occupied by the second system message.
  • System message at this time, the second network node knows that there is a new network node, that is, the first network node also shares the use of the unlicensed spectrum.
  • the at least one second network node and the first network node follow The second system message has the available time of the spectrum, so that the unlicensed spectrum is used to communicate with the user equipment in the available time, thereby achieving the purpose of coordinating the use of the unlicensed spectrum between the network nodes, so that the multiple network
  • the node is capable of fair and efficient data transmission on the unlicensed spectrum.
  • 1 is a schematic diagram of the use of unlicensed spectrum resources in an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a network node in an embodiment of the present invention.
  • FIG. 3 is a second schematic diagram of the use of unlicensed spectrum resources in the embodiment of the present invention.
  • FIG. 4 is a third schematic diagram of the use of unlicensed spectrum resources in the embodiment of the present invention.
  • FIG. 5 is a fourth schematic diagram of the use of unlicensed spectrum resources in the embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a network node in an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart of a method for using a spectrum resource according to an embodiment of the present invention. detailed description
  • the network node and the method for using the spectrum resource provided by the embodiment of the present invention are applicable to a network architecture composed of at least one network node, where the network node includes a WIFI access point (AP) and an evolved base station (evolved). Node B, referred to as eNB) and network nodes using other radio access technologies.
  • AP WIFI access point
  • evolved evolved base station
  • Node B referred to as eNB
  • the embodiments of the present invention allocate non-authorized frequency usage rights among different network nodes, so that each network node can fully and fairly use the unlicensed spectrum resources. The following describes in detail how the first network node joins the use of unlicensed spectrum resources and how to share unlicensed spectrum resources with other network nodes.
  • a network node needs to provide a service for a user equipment (User Equipment, UE for short)
  • the network node needs to broadcast a system message according to a certain mode.
  • the mode is periodic. Referring to one of the schematic diagrams of the use of unlicensed spectrum resources shown in FIG. 1, node A broadcasts system message A in time window A, and node B broadcasts system message B in time window B, node C.
  • the system message of the network node includes at least one of the following items:
  • the network node uses information about the unlicensed spectrum:
  • the transmission mode and/or related parameters of the system message for example, the transmission mode is periodic transmission, and the related parameters are the transmission period (ie, broadcast period).
  • Synchronization signals such as a primary synchronization signal, a secondary synchronization signal, etc. and/or related parameters, for example, related parameters include a transmission period of the synchronization signal, a transmission position of the synchronization signal (time domain and or frequency domain position), and the like.
  • Reference signals and/or related parameters include a transmission period of the reference signal, a transmission position of the reference signal (time domain and or frequency domain position), and the like.
  • 4 The use of unlicensed spectrum resources, for example, based on the use of competition, or based on non-competitive use, or non-competitive and competitive methods.
  • the declared parameters of the unlicensed spectrum are used, for example, the declared parameters include: a sending period of the declared message, a sending position of the claimed message (time domain and or frequency domain location), and a content of the claimed message such as the occupation time.
  • At least one neighboring network node of the network node uses information about the unlicensed spectrum:
  • Most of the information of a neighboring network node is similar to that of the network node using the unlicensed spectrum.
  • 2 may further include information such as a sending period, a sending position (time domain and or a frequency domain location) of the system message of the at least one neighboring network node, where the information may be absolute information or may be relative to the network node system. Relative information about the message, such as relative position.
  • the sending period of the system message of the neighboring node is the same as that of the local network node, and the sending location is between two system messages of the network node.
  • the system messages of each network node are broadcasted by using unlicensed spectrum, regardless of the way in which the unlicensed spectrum is used between systems or between carriers, whether based on contention or based on non-contention.
  • the time window in which each system message is located is not available (ie, it is not possible to communicate with the user equipment using unlicensed frequencies during the broadcast time of the system message). That is to say, when a neighboring network node also uses the unlicensed spectrum, the network node cannot use the time window in which the system message of the neighboring network node is located, and similarly, the neighboring network node cannot use the network.
  • the time window in which the system message of the node is located.
  • the size of the time window can be fixed in the protocol.
  • FIG. 2 is a schematic structural diagram of a network node according to an embodiment of the present invention, where the network node is a first network node, and the first network node includes:
  • the system message monitoring module 201 is configured to monitor, broadcast by the second network node that uses the unlicensed spectrum. Second system message.
  • the first network node Before using the unlicensed frequency, the first network node needs to determine which ones are broadcasted by acquiring system messages broadcasted by other network nodes (ie, the second network node, the area with overlapping coverage between the second network node and the first network node)
  • the network node is using an unlicensed spectrum.
  • the embodiment of the present invention can obtain system messages broadcast by other network nodes in one of the following three manners:
  • Manner 1 The first network node listens to the second system message broadcasted by the second network node that has used the unlicensed spectrum to obtain at least one second system message. Further, based on the acquired second system message, a system message of a neighboring network node of the second network node that broadcasts the second message may be included, and for each second system message acquired and each second system message Other system messages in the system, there may be duplicate system messages in these system messages, then need to remove duplicate system messages from them to retain the remaining system messages, therefore, by further obtaining other system messages from the obtained system messages, Know as much as possible of all network nodes that use unlicensed spectrum.
  • the system message monitoring module 201 includes: a message receiving submodule, configured to receive a system message broadcast by the second network node; and a first determining submodule, configured to: if the message is Receiving, by the receiving sub-module, a system message broadcast by another second network node, extracting each dissimilar system message from the received system message and the other system message, and distinguishing the dissimilar system message a system message as a second system message that is monitored; a second determining submodule, configured to: if the second system message received by the message receiving submodule does not include a system message broadcast by another second network node, The received system message is used as the second system message that is monitored.
  • the first network node sends a monitoring notification to the user equipment UE to notify the user equipment to listen to the second system message broadcast by the second network node that has used the unlicensed spectrum, and then the user equipment UE will acquire the system message. Send to the first network node. Further, based on the acquired second system message, a system message of a neighboring network node of the second network node that broadcasts the second message may be included, and for each second system message acquired and each second system message Other system messages in the system, there may be duplicate system messages in these system messages, then you need to remove duplicate system messages from them to retain the remaining system messages. Therefore, by further obtaining other system messages from the system messages, you can All network nodes that use unlicensed spectrum are known.
  • the system message listening module 101 includes: a notification sending submodule, configured to send a monitoring notification to the user equipment, so that the user equipment receives the monitoring notification after receiving the monitoring notification a system message broadcasted by the network node; a result receiving submodule, configured to receive a monitoring result that is sent by the user equipment and includes at least one system message; and a third determining submodule, configured to: if the result receiving submodule receives the monitoring result The system message in the system message includes the system message broadcasted by the other second network node, and extracts each dissimilar system message from the system message in the monitoring result and the other system message, and uses the dissimilar system message as a second system message that is monitored; a fourth determining submodule, configured to: if the system message in the monitoring result received by the result receiving submodule does not include a system message broadcast by another second network node, the monitoring result is The system message in the message is the second system message that is being listened to.
  • a notification sending submodule configured to send a monitoring
  • Manner 3 combining mode 1 and mode 2, that is, the first network node and the user equipment UE simultaneously listen to the second system message broadcast by the second network node that has used the unlicensed spectrum to obtain at least one second system message. .
  • the first network node further obtains other system messages from these second system messages, and can learn as much as possible of all network nodes using the unlicensed spectrum.
  • the system message monitoring module 101 includes: a message receiving sub-module, configured to receive a system message broadcast by the second network node; and a notification sending sub-module, configured to the user equipment Receiving a monitoring notification, so that the user equipment receives the system message broadcast by the second network node after receiving the monitoring notification; the result receiving submodule is configured to receive the monitoring result that is included in the user equipment and includes at least one system message; a submodule, configured to: if the system message received by the message receiving submodule and/or the system message in the monitoring result received by the result receiving submodule includes a system message broadcast by another second network node, Extracting each dissimilar system message from the received system message, the system message in the interception result, and the other system message, and using the dissimilar system message as the monitored second system message; a module for receiving a system message and/or the node if the message receiving submodule receives If the system message in the monitoring result received by the receiving submodule does not include the system message broadcast by the other second network node
  • the first network node or user equipment UE needs to scan or listen for at least a specific time interval.
  • the specific time interval may be a multiple of a maximum broadcast period in each second broadcast period of each of the second network nodes. Because the second system message includes the second broadcast period of the second system message, it may be determined by the radio network controller (Radio Ne 2rk Cont roler, RNC for short) according to all the second broadcast periods. The specific time interval is then notified by the RNC to the first network node and/or the user equipment.
  • the message receiving sub-module is configured to receive, in a first receiving time (the specific time interval), a system message broadcast by a second network node, where the first receiving time is not less than that in all second broadcast periods. The longest period.
  • the notification sending sub-module is specifically configured to send a monitoring notification to the user equipment, so that the user equipment receives the second network node broadcasted during the second receiving time (the specific time interval) after receiving the monitoring notification. a system message, where the second receiving time is not less than a longest period of all second broadcast periods.
  • the related information obtaining module 202 is configured to: if the system message monitoring module 201 monitors at least one of the second system messages, obtain, by using the second system message that is intercepted, the second system message to be broadcasted each time. The second broadcast time occupied, and the manner in which the unlicensed spectrum is used.
  • the broadcast time selection module 203 is configured to select, at other times than the second broadcast time acquired by the related information acquiring module 202, a first broadcast time occupied by each broadcast of the first system message, so that The first system message is broadcasted during a broadcast time.
  • the broadcast time selection module 203 uses the unlicensed spectrum (ie, the system message listening module 201 listens for system messages with neighboring second network nodes on the unlicensed spectrum).
  • node A can broadcast its own system message A by selecting time window A on the time axis of the unlicensed spectrum.
  • the first network node is the node B
  • the second network node is the node A
  • the system message listening module 201 listens to the system message that the adjacent second network node is on the unlicensed spectrum.
  • the Node B may select the time window B (the time window B is the first broadcast time) to broadcast itself on the time axis between the adjacent time window A (the time window A is the second broadcast time).
  • System message B, and broadcast system message B periodically with a broadcast period B as a time interval.
  • the first network node is a node (the second network node is node A and node B, and it is assumed that node A and node B adjacent to node C before node C)
  • the system message listening module 201 listens to system messages with neighboring second network nodes on the unlicensed spectrum.
  • node C can be in the adjacent time window A (time window A is the Broadcasting the time window C (the time window C is the first broadcast time) on the time axis between the second broadcast time) or the adjacent time window B (the time window B is the second broadcast time) System message C, and broadcast system message C periodically with a broadcast period C as a time interval.
  • the first broadcast time occupied is the optional location of the first broadcast time (the optional location is the interval time of each time window).
  • the second network node In the process of using the unlicensed spectrum by the second network node, the second network node still needs to scan or listen to whether any new network nodes join the ranks using the unlicensed spectrum, so as to reallocate each according to the way the unlicensed spectrum is used.
  • the network nodes use the time period of the spectrum, and the second network node can periodically listen for new system messages.
  • the second system message of the second network node includes a node listening time for monitoring a new network node that uses the unlicensed spectrum, and the node listening time is in the resource usage period.
  • each second network node will monitor whether there is a new network node joining at the node listening time, for the new network node, that is, the first network
  • the node may obtain the node listening time from the second system message, and then use the node listening time as a first broadcast time for broadcasting the first system message, once the first network node occupies the node listening time
  • the second network node monitors that a new network node joins. At this time, the second network node reselects the node listening time according to the predetermined regulations.
  • the broadcast time selection module includes: a monitoring time acquisition sub-module, configured to acquire the node monitoring time from the second system message; and a broadcast time determining sub-module, configured to acquire the monitoring time
  • the node listening time acquired by the submodule is used as the first broadcast time for broadcasting the first system message.
  • the node listening time may be a length of time in the maximum interval time, where the maximum interval time is a broadcast interval of each adjacent two system messages in the resource usage period. The longest interval between the two.
  • the maximum interval time is Broadcast period A; assume that there are two second network nodes, node A and node B, and assume that the resource usage period is broadcast period A, if the broadcast interval between system message A and system message B is greater than system message B The broadcast interval between system messages A, then the maximum interval time is the broadcast interval between system message A and system message B.
  • At least one second network node uses the unlicensed spectrum, but in the at least one In at least one system message broadcast by the network node, if there are two adjacent system messages whose interval time is greater than or equal to the set interval time, indicating that the network nodes that are using the unlicensed spectrum are not many, then the satisfaction may be greater than An interval is selected from the interval equal to the condition of the set interval time to set the time window of the first network node. For example, in the third figure in FIG.
  • the node C as the first network node may select the time window C1 from the interval between the time window A1 and the time window B1, or may select the time window C1 from the interval between the time window B1 and the time window A2.
  • the network node further includes:
  • An interval determining module configured to determine, during the resource usage period, the monitored at least one second system, before the listening time acquisition submodule acquires the node listening time from the second system message a broadcast interval of each two adjacent second system messages in the message;
  • a continuation execution module configured to: if at least one broadcast interval time greater than or equal to the set interval time exists in each broadcast interval determined by the interval time determining module And the step of acquiring the node listening time from the second system message by using the listening time acquisition submodule.
  • the value of the set interval may be fixed by a protocol, or set by a network node, or a range fixed by a protocol, and the network node selects one from the range.
  • the available frequency usage module 204 is configured to determine, according to the usage manner of the unlicensed spectrum acquired by the related information acquiring module 202, an available time for using the unlicensed spectrum, and use the non- Authorizing the spectrum to communicate with the user equipment, the available time is The length of time in each resource usage period other than the first broadcast time and the second broadcast time.
  • each second system message and the first system message should include the same.
  • the unlicensed spectrum is used in the following manner: a non-competitive mode, or a competitive mode, or using the non-contention mode to use a non-competitive type of spectrum resource and using the competitive mode to use a competitive type Frequency resources.
  • a non-competitive mode or a competitive mode
  • using the non-contention mode to use a non-competitive type of spectrum resource
  • using the competitive mode to use a competitive type Frequency resources.
  • the non-competitive mode may specifically be one of the following four ways:
  • the broadcast interval between adjacent system messages is: The time at which the network node of the previous system message in the adjacent system message broadcasts the unlicensed spectrum.
  • the time from the time window of a node system message to the time before the next adjacent system message time window is used by the node alone.
  • Example 1 See the third diagram of the use of unlicensed spectrum resources shown in Figure 4.
  • the broadcast interval between adjacent system messages that is, the interval between time window A1 and time window A2 can be used by node A.
  • the broadcast interval time between adjacent system messages that is, the interval between the time window A1 and the time window B1
  • the broadcast interval between adjacent system messages can be used by the node A
  • the broadcast interval between adjacent system messages 2, that is, the interval between the time window B1 and the time window A2 can be used by the node B.
  • the unlicensed spectrum is used between each network node in a preset order, and each network node broadcasts in the system message of each network node using the unlicensed spectrum during the resource usage period.
  • Example 2 referring to the first figure in FIG. 4, 4 ⁇ is provided with two network nodes, that is, node A and node B need to use unlicensed frequency, and the two network nodes can use the order of unauthorised frequency and use of the ranks.
  • the unlicensed spectrum is used, such as the order of node 4, node B, node A, node B.
  • the resource usage period is other time ⁇ except the time window in the broadcast period A
  • the node ⁇ broadcasts the usage time of the unlicensed frequency in the system message A as TA
  • the node B broadcasts its own use in the system message B.
  • the authorized use time is TB.
  • TA+TB TW
  • the node A In the TW, the node A first uses the unlicensed spectrum TA time, and the node B reuses the unlicensed spectrum TB time. If TA+TB ⁇ TW, the node A first uses the unlicensed frequency TA time, and the remaining time is used by the node B. .
  • the unlicensed spectrum is used in a preset order between each network node, and each network node uses the unlicensed spectrum in the resource usage period for the same time.
  • the network nodes may be sequentially used to sequentially use the unlicensed spectrum resources. For example, in example 2, if TA+TB>TW, the TW is divided into N shares, and each part takes up TN time, and node A first uses Unauthorized frequency TN time, Node B reuses unlicensed frequency TN time, node A reuses unlicensed frequency TN time, and so on.
  • the unlicensed spectrum is used in a preset order between each network node, and the total time of using the unlicensed spectrum by each network node within a preset time length is the same.
  • Example 3 assuming that two network nodes, Node A and Node B, need to use an unlicensed spectrum, and assume that the preset time length is a time length TW between time window A1 and time window B2 except for each time window.
  • the embodiment of the present invention is not limited to the number of times of use and the usage time of each node for the unlicensed frequency, as long as the length of use of each network node in the preset time length is the same.
  • the competition method is specifically as follows:
  • Each network node monitors whether other network nodes use the unlicensed spectrum, and if no other network nodes are used to monitor the unlicensed spectrum, continue to monitor whether there are other network nodes using the non-permitted time in the first backoff time.
  • Authorizing the spectrum if the other network node is not used to use the unlicensed spectrum during the first backoff time, using the unlicensed spectrum in the first use time; if in the first backoff time After listening to the other network node to use the unlicensed spectrum, it continues to monitor whether other network nodes use the unlicensed spectrum; wherein the first backoff time is proportional to the first usage time.
  • Example 4 Referring to the fourth schematic diagram of the use of unlicensed spectrum resources shown in FIG. 5, it is assumed that the network node base station eNB1 and the base station eNB2 compete for the unlicensed spectrum.
  • eNB1 For eNB1, eNB1 first listens to whether eNB2 is using non-four-frequency (can pass detection) Spectral energy to determine whether the spectrum is used, high energy indicates use, low energy indicates unused, if it is used, continue to monitor, if not used, then retreat for a period of time to monitor for a period of time, if in the backoff time If the eNB2 has not used the unlicensed spectrum, the eNB1 uses the unlicensed spectrum, and the eNB1 competes for the unlicensed spectrum resources.
  • non-four-frequency can pass detection
  • the eNB1 After the eNB1 competes for the unlicensed spectrum resources, it needs to announce the use of the unlicensed spectrum by means of data transmission or request to send (Reques t To Send, RTS for short) or clear transmission (CTS) or announcement message.
  • the duration Tl after the Tl time has elapsed, the eNB1 continues to listen.
  • the working principle of the eNB2 is the same as that of the eNB1, and details are not described herein again.
  • the length of T1 cannot exceed the length of time between adjacent system messages, or cannot exceed a value specified by the protocol.
  • the longer the network node uses the available unlicensed spectrum resources the longer the corresponding backoff time should be.
  • the backoff time may be randomly selected within a time range [tl, t 2], and the size of t1 and/or t 2 increases as the network node announces an increase in the length of time for using the unlicensed spectrum resource; or
  • the backoff time can be randomly selected within a time range [t l+T, t2+T], which increases as the network node announces an increase in the length of time that the unlicensed spectrum resource is used.
  • Resources other than non-competitive resources using the means of competition to use available unlicensed spectrum resources; resources other than competing resources, using the non-competitive means to use available unlicensed spectrum Resources.
  • the above modules may be embedded in hardware or in a processor independent of the network node, or may be stored in software in a network node, such as a network node, so that the processor can execute the above modules.
  • the processor can be a central processing unit (CPU), a microprocessor, a microcontroller, or the like.
  • the embodiment of the present invention further provides a configuration of the network node 600.
  • a transmitter, a receiver, a processor, at least one network interface or other communication interface, a memory, and at least one communication bus may be included for enabling connection communication between the devices.
  • a transmitter is used to transmit data
  • a receiver is used to receive data
  • a processor is used to execute an executable module, such as a computer program, stored in the memory.
  • the memory may contain high-speed random access memory (RAM: Random Acces s Memory). It may also include non-volatile memory, such as at least one disk storage.
  • the communication connection between the system gateway and at least one other network element may be implemented through at least one network interface (which may be wired or wireless), and may use an Internet, a wide area network, a local network, a metropolitan area network, or the like.
  • FIG. 6 is a schematic structural diagram of a network node 600 according to an embodiment of the present invention.
  • the network node 600 is a first network node.
  • program instructions are stored in the memory, and the program instructions may be processed by a processor, a transmitter, and The receiver executes. among them,
  • a processor configured to listen to a second system message broadcast by the second network node that uses the unlicensed spectrum, and if at least one of the second system messages is received, obtain each broadcast from the monitored second system message a second broadcast time occupied by the second system message, and a usage manner of the unlicensed spectrum;
  • a processor configured to select, at a time other than the second broadcast time, a first broadcast time occupied by each broadcast of the first system message, to broadcast the first system during the first broadcast time Message
  • a processor configured to determine, according to the usage manner of the unlicensed spectrum, an available time for using the unlicensed spectrum, and communicate with the user equipment by using the unlicensed spectrum during the available time, where the available time is The length of time in addition to the first broadcast time and the second broadcast time in each resource usage period.
  • the processor is specifically configured to receive, by using a receiver, a system message broadcast by the second network node; if the received system message includes a system message broadcast by another second network node, the system message received from the system message Extracting each dissimilar system message from the other system message, and using the dissimilar system message as the monitored second system message; if the received second system message does not include other second network node Broadcasting the system message, the received system message is used as the monitored second system message;
  • the second system message includes a second broadcast period of the second system message, where the processor is configured to receive, by using a receiver, a second network within a first receiving time. a system message broadcast by the node, where the first receiving time is not less than a longest period of all second broadcast periods.
  • the second system message includes a second broadcast period of the second system message, where the processor is configured to send a monitoring notification to the user equipment by using a transmitter, so that The user equipment receives the system message broadcast by the second network node in the second receiving time after receiving the monitoring notification, where the second receiving time is not less than the longest period in all the second broadcasting periods.
  • the second system message includes a node listening time for monitoring a new network node that uses the unlicensed spectrum, and the node listening time is divided by the resource usage period. a length of time in the other time than the second broadcast time; the processor is specifically configured to acquire the node listening time from the second system message, and use the node listening time as a broadcast The first broadcast time of a system message.
  • the node listening time is: time in the maximum interval time The length, where the maximum interval time is the longest interval in the broadcast interval time of each adjacent two system messages in the resource usage period.
  • the processor determines the at least one second system message that is being monitored during the resource usage period before acquiring the node listening time from the second system message. Broadcast interval time of each two adjacent second system messages; if there is at least one broadcast interval time greater than or equal to the set interval time in the determined respective broadcast interval times, performing the slave system The step of obtaining the listening time of the node in the message.
  • the unlicensed spectrum is used in the following manner: a non-contention mode, or a contention mode, or using the non-contention mode to use a non-contention type spectrum resource and using the spectrum resource
  • the competition method uses the spectrum resources of the competitive type.
  • the non-contention mode is specifically:
  • the broadcast interval between adjacent system messages is the time at which the network node that broadcasts the previous system message in the adjacent system message uses the unlicensed spectrum
  • each of the network nodes uses the unlicensed spectrum in a preset order, and each network node broadcasts in the system message of each network node by using the unlicensed spectrum during the resource usage period;
  • each of the network nodes uses the unlicensed spectrum in a preset order, and each network node uses the unlicensed spectrum in the resource usage period for the same time;
  • each of the network nodes uses the unlicensed spectrum in a preset order, and each network node uses the unlicensed spectrum for a preset time length.
  • the contention manner is specifically:
  • Each network node monitors whether other network nodes use the unlicensed spectrum, and if no other network nodes are used to monitor the unlicensed spectrum, continue to monitor whether there are other network nodes using the non-permitted time in the first backoff time.
  • Authorized spectrum
  • the unlicensed spectrum is not monitored by the other network node during the first backoff time, the unlicensed spectrum is used in the first use time; if the first backoff time is monitored, If the other network node uses the unlicensed spectrum, it continues to monitor whether other network nodes use the unlicensed spectrum; wherein the first backoff time is proportional to the first usage time.
  • the first network node provided by the embodiment of the present invention enables the first network node to use the unlicensed spectrum Pre-determining the occupation time of the second system message on the unlicensed spectrum and the use of the unlicensed spectrum by the second network node by acquiring the second system message broadcast by the at least one second network node that has used the unlicensed spectrum In this way, the first network node can broadcast its first system message at a time other than the time occupied by the second system message. At this time, the second network node knows that there is a new network node, that is, the first network node also needs to share.
  • the at least one second network node and the first network node are in accordance with a predetermined unlicensed spectrum in the second system message, thereby utilizing the non-
  • the authorized spectrum communicates with the user equipment, thereby achieving the purpose of coordinating the use of the unlicensed spectrum between the network nodes, so that the multi-network node can perform fair and efficient data transmission on the unlicensed spectrum.
  • the network node in the embodiment of the present invention has been described above. The following describes the method for using the spectrum resource in the embodiment of the present invention. For related information, refer to the foregoing device embodiment.
  • FIG. 7 is a schematic flowchart of a method for using a spectrum resource according to an embodiment of the present invention, where the method includes the following steps:
  • Step 701 The first network node listens to the second system message broadcast by the second network node that uses the unlicensed spectrum.
  • the system message broadcasted by the second network node may be obtained in one of the following three manners:
  • Manner 1 The first network node receives the system message broadcast by the second network node; if the received system message includes a system message broadcast by another second network node, the received system message and the other Extracting each dissimilar system message in the system message, and using the dissimilar system message as the monitored second system message; if the received second system message does not include other system messages broadcast by the second network node And the received system message is used as the second system message that is monitored.
  • Manner 2 The first network node sends a monitoring notification to the user equipment, so that the user equipment receives the system message broadcast by the second network node after receiving the monitoring notification, and receives the at least one system message that is reported by the user equipment. Listening result; if the system message in the monitoring result includes a system message broadcast by another second network node, the system message from the monitoring result Extracting each dissimilar system message from the other system message, and using the dissimilar system message as the monitored second system message; if the system message in the monitoring result does not include other second network node broadcasts The system message, the system message in the monitoring result is used as the second system message that is monitored.
  • the first network node receives the system message broadcast by the second network node, and sends a monitoring notification to the user equipment, so that the user equipment receives the system message broadcast by the second network node after receiving the monitoring notification, and receives the user
  • the monitoring result reported by the device includes at least one system message; if the received system message and/or the system message in the monitoring result includes a system message broadcast by another second network node, the received Extracting each dissimilar system message from the system message, the system message in the interception result, and the other system message, and using the dissimilar system message as the monitored second system message; if the received system The system message in the message and/or the monitoring result does not include other system messages broadcast by the second network node, and each distinct system is extracted from the received system message and the system message in the monitoring result. The message is used as the second system message that is monitored.
  • the first network node when the second system message includes the second broadcast period of the second system message, the first network node receives the system message broadcast by the second network node in the first receiving time, where The first receiving time is not less than a longest period of all second broadcast periods.
  • the first network node when the second system message includes the second broadcast period of the second system message, the first network node sends a monitoring notification to the user equipment, so that the user equipment receives the Receiving, by the second receiving time after the notification, the system message broadcast by the second network node, where the second receiving time is not less than the longest period of all the second broadcasting periods.
  • Step 702 If at least one of the second system messages is detected, obtain a second broadcast time occupied by the second system message from the monitored second system message, and the unauthorized How the spectrum is used.
  • Step 703 The first network node selects, at other times than the second broadcast time, a first broadcast time occupied by each broadcast of the first system message, so as to broadcast the first broadcast time in the first broadcast time.
  • a system message A system message.
  • the second system message includes a node listening time for monitoring a new network node that uses the unlicensed spectrum, where the node listening time is The length of time in the source usage period other than the second broadcast time.
  • step 703 is implemented as follows:
  • the first network node acquires the node listening time from the second system message, and uses the node listening time as a first broadcast time for broadcasting the first system message.
  • the listening time of the node is: the length of time in the maximum interval time, wherein the maximum interval time is the longest interval in the broadcast interval time of each adjacent two systems in the resource usage period;
  • the method further includes the following steps:
  • Step 704 The first network node determines, according to the usage manner of the unlicensed spectrum, the available time of using the unlicensed spectrum, and uses the unlicensed spectrum to communicate with the user equipment in the available time, where the available The time is the length of time in addition to the first broadcast time and the second broadcast time in each resource usage period.
  • the unlicensed spectrum is used in the following manner: a non-competitive mode, or a competitive mode, or using the non-competitive mode to use a non-competitive type of spectrum resource and using the actual
  • the contention method uses spectrum resources of the competitive type. The following three methods are described in detail:
  • the non-competitive mode may specifically be one of the following four ways:
  • the broadcast interval between adjacent system messages is the time when the network node that broadcasts the previous system message in the adjacent system message uses the unlicensed spectrum
  • the unlicensed spectrum is used in a preset order between each network node, and each network node broadcasts in the system message of each network node by using the unlicensed spectrum during the resource usage period;
  • the unlicensed spectrum is used in a preset order between each network node, and each network node uses the unlicensed spectrum in the resource usage period for the same time;
  • the unlicensed spectrum is used in a preset order between each network node, and each network section
  • the total time at which the point uses the unlicensed spectrum for the preset length of time is the same.
  • the competition method is specifically as follows:
  • Each network node monitors whether other network nodes use the unlicensed spectrum, and if no other network nodes are used to monitor the unlicensed spectrum, continue to monitor whether there are other network nodes using the non-permitted time in the first backoff time.
  • Authorized spectrum
  • the unlicensed spectrum is not monitored by the other network node during the first backoff time, the unlicensed spectrum is used in the first use time; if the first backoff time is monitored, If the other network node uses the unlicensed spectrum, it continues to monitor whether other network nodes use the unlicensed spectrum; wherein the first backoff time is proportional to the first usage time.
  • Resources other than non-competitive resources using the means of competition to use available unlicensed spectrum resources; resources other than competing resources, using the non-competitive means to use available unlicensed spectrum Resources.
  • the method for using the spectrum resource provided by the embodiment of the present invention, so that the first network node determines the second system by acquiring the second system message that has been broadcast by the at least one second network node that has used the unlicensed spectrum before using the unlicensed spectrum.
  • the occupation time of the message on the unlicensed spectrum and the manner in which the second network node uses the unlicensed spectrum so that the first network node can broadcast its first system message at a time other than the time occupied by the second system message.
  • the second network node knows that there is a new network node, that is, the first network node also needs to share the unlicensed spectrum.
  • the at least one second network node and the first network node follow the The predetermined non-grant time in the second system message, so that the unlicensed spectrum is used to communicate with the user equipment during the available time, thereby achieving the purpose of coordinating the use of the unlicensed spectrum between the network nodes, so that the multiple network nodes are in the non- Fair and efficient data transmission is possible on the licensed spectrum.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or sub-modules is only a logical function division.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect engagement or communication connection through some interface, device or module, and may be in electrical, mechanical or other form.
  • the modules described as separate components may or may not be physically separate.
  • the components displayed as modules may or may not be physical modules, that is, may be located in one place, or may be distributed to multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules.
  • the integrated modules if implemented in the form of software functional modules and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a USB flash drive, a removable hard disk, a Read-Only Memory (ROM), a random access memory (RAM, Random Acce ss Memory), a magnetic disk, or an optical disk, and the like, which can store program codes. Medium.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé pour utiliser un nœud de réseau et une ressource spectrale, ledit procédé comporte les étapes suivante : un premier nœud de réseau surveille une diffusion de second message système par un second nœud de réseau à l'aide d'un spectre sans licence ; si au moins un second message système est détecté, alors un second temps de diffusion occupé par ledit second message système chaque fois qu'il est diffusé, ainsi que le mode d'utilisation dudit spectre sans licence, sont obtenus à partir du second message système détecté ; à des temps autres que le second temps de diffusion, le premier temps de diffusion occupé par le premier message système chaque fois qu'il est diffusé est sélectionné, de sorte que ledit premier message système est diffusé à l'intérieur dudit premier temps de diffusion ; conformément au mode d'utilisation du spectre sans licence, le temps disponible pour le premier nœud de réseau afin d'utiliser ledit spectre sans licence est déterminé, et le spectre sans licence est utilisé, dans le temps disponible, pour communiquer avec l'équipement utilisateur ; le temps disponible est la durée, pendant chaque période d'utilisation de ressources, autre que ledit premier temps de diffusion et ledit second temps de diffusion.
PCT/CN2014/076465 2014-04-29 2014-04-29 Procédé pour utiliser un nœud de réseau et une ressource spectrale WO2015165035A1 (fr)

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