WO2011127767A1 - 感知导频信道支持的认知系统初始化方法、装置和系统 - Google Patents
感知导频信道支持的认知系统初始化方法、装置和系统 Download PDFInfo
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- WO2011127767A1 WO2011127767A1 PCT/CN2011/071189 CN2011071189W WO2011127767A1 WO 2011127767 A1 WO2011127767 A1 WO 2011127767A1 CN 2011071189 W CN2011071189 W CN 2011071189W WO 2011127767 A1 WO2011127767 A1 WO 2011127767A1
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- terminal
- base station
- cpc
- frequency point
- working frequency
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- 230000001149 cognitive effect Effects 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000004044 response Effects 0.000 claims abstract description 50
- 238000011423 initialization method Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 21
- 238000001228 spectrum Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 12
- 238000004891 communication Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000013468 resource allocation Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 230000006855 networking Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/30—Connection release
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a cognitive system initialization method, apparatus and system supported by a cognitive pilot channel.
- the existing spectrum usage policy is fixed allocation, that is, the government allocates fixed resources for specific services of specific users, such as TV, radio, radar, navigation, etc., which use fixed frequency points, some of which are not always used. Not all geographical locations are in use, so there are certain time periods and some geographical locations, and some frequency points are not fully utilized, resulting in a great waste of spectrum resources.
- cognitive radio (CR) technology can discover these unoccupied frequency bands that appear anywhere, anytime, and dynamically without disturbing the primary user (Primary User, PU originally fixed frequency user). Access to these frequency bands enables the use of slotted pins to increase spectrum utilization.
- CR cognitive radio
- CR technology needs to solve two problems: First, timely and accurate discovery of the spectrum blank period that occurs, and second, timely access to these frequencies in the blank period.
- RRS Reconfigurable Radio Systems
- Terminals can select access technologies and operators according to service requirements, with different access. The frequency of technology is changing anytime and anywhere.
- the terminal search for specific access technology is time-consuming and power-consuming. Therefore, the RRS standard group proposes a cognitive pilot channel (Cognitive Pilot Channel, CPC).
- CPC cognitive pilot channel
- This channel can be carried on existing wireless access networks such as the Global System for Mobile Communications (GSM) network, or it can be carried in future wireless access networks.
- GSM Global System for Mobile Communications
- CPC Access Point CPC Access Point
- CPC AP
- CPC CPC Access Point
- the CPC periodically broadcasts the spectrum usage status and service provision status of different areas. After the terminal is powered on, the terminal can quickly obtain the locally available spectrum and available services from the CPC AP.
- the cognitive network under the CPC network architecture is a network established by the cognitive terminal and the base station, and the terminal and the base station need to perceive the wireless spectrum environment.
- the terminal and the base station need to exchange the sensing information.
- the working frequency and the broadcast channel are negotiated.
- One function of the CPC AP is to assist the base station and the terminal to complete the interaction of the sensing information, the working frequency negotiation and the broadcast channel selection, and finally establish the cognitive system.
- the terminal and base station power up and scan the CPC to obtain a set of available spectrum from the CPC AP, that is, a set of frequency points that are not registered for use in the CPC AP.
- the terminal and the base station sense the set of available frequency points to complete the evaluation of each frequency point. Then, the base station sends a random access request to the CPC AP, obtains the sending resource of the next message, and establishes a bearer with the CPC AP.
- the base station After the base station and the CPC AP establish a bearer, the base station sends a sensing message to the CPC AP, including the sensing result, the identity of the base station (Identity, ID), and the geographical location information.
- the base station is required to support the positioning technology. For example: Global Positioning System (GPS)
- the CPC After receiving the message from the base station, the CPC broadcasts the received sensing result on the CPC broadcast channel.
- the terminal obtains information about all the base stations around it according to the broadcast information, and judges whether the base station is within its communication range according to the geographical location information, and can meet its service requirements. After evaluation, if it is desired to network with a certain base station, first Initiating a random access request to the CPC AP, obtaining a sending resource of the next message, and establishing a bearer with the CPC AP;
- the terminal After the terminal establishes a bearer with the CPC AP, the terminal sends the spectrum sensing result, the target base station ID, and the like to the UE.
- the CPC sends the sensing result of the terminal to the target base station according to the target base station ID;
- the base station After receiving the sensing result of the terminal, the base station firstly fuses the sensing data to obtain a sensing decision.
- the foregoing sensing decision includes: a working frequency point and a broadcast channel of the network where the base station is located, and the sensing is performed.
- the decision result is sent to the CPC AP.
- the CPC sends the above sensing decision to the terminal
- the terminal If the terminal is not satisfied with the decision result, it continues to send the sensing message to the CPC AP, including the sensing result, the base station identifier, and the desired working frequency.
- the CPC AP sends the terminal message to the base station, and the base station adjusts the sensing decision.
- the acknowledgment message is sent to the base station and the CPC AP, and the CPC AP is removed from the bearer of the base station, and the bearer of the terminal is removed;
- the terminal and the base station switch to the working frequency of the decision result to establish a path.
- the ID may be a unique ID of the entire network and the value is large, so the complexity of the system implementation is increased.
- the terminal knows the base station ID
- the terminal and the base station do not know the mutual communication capability and range. Therefore, both the base station and the terminal must support the positioning technology.
- the positioning technology such as GPS
- the cost of the system is increased due to the high price of the GPS.
- the technical problem to be solved by the embodiments of the present invention is to provide a cognitive system initialization method, apparatus and system supported by a perceptual pilot channel to reduce the complexity and cost of system implementation.
- the cognitive system initialization method supported by the cognitive pilot channel provided by the present invention can be implemented by the following technical solutions:
- the terminal receives the sensing information of the terminal on the CPC-specific resource, determining the working frequency point according to the sensing information of the terminal, and transmitting the working frequency of the determining to the terminal, where the sensing information of the terminal is the sensing information of the terminal and the sensing information of the base station.
- the terminal sends on the channel indicated by the uplink access channel description information;
- a link to the terminal is established at the working frequency of the decision.
- a cognitive system initialization method supported by a cognitive pilot channel comprising:
- the sensing information of the terminal is sent to the base station on the channel indicated by the uplink access channel description information, and the sensing information of the terminal is used to make the base station decide Working frequency point;
- a base station comprising:
- An initialization request sending unit configured to send a frequency point initialization request message to the CPC AP
- an initialization response receiving unit configured to receive a frequency point initialization response message sent by the CPC AP, where the frequency point initialization response message includes CPC dedicated resource description information
- a broadcast unit configured to broadcast the sensing information of the base station and the uplink access channel description information to the terminal on the channel indicated by the CPC dedicated resource description information;
- the sensing information receiving unit is configured to receive the sensing information of the terminal on the CPC dedicated resource, where the sensing information of the terminal is that when the intersection of the sensing information of the terminal and the sensing information of the base station is not empty, the terminal accesses the uplink Transmitted on the channel indicated by the channel description information;
- a working frequency point decision unit configured to determine a working frequency point according to the sensing information of the terminal
- a working frequency point sending unit configured to send the working frequency of the decision to the terminal
- a link establishing unit is configured to establish a link with the terminal at the working frequency of the decision.
- a terminal comprising:
- An initialization response receiving unit configured to receive a frequency point initialization response message broadcasted by the CPC AP, where the frequency point initialization response message includes CPC dedicated resource description information;
- An information receiving unit configured to receive, by using the channel indicated by the CPC dedicated resource description information, the sensing information of the base station and the uplink access channel description information;
- the sensing information sending unit is configured to: when the intersection of the sensing information of the terminal and the sensing information of the base station is non-empty, send the sensing information of the terminal to the base station on the channel indicated by the uplink access channel description information, where the terminal The sensing information is used to cause the base station to determine the working frequency point;
- a working frequency point receiving unit configured to receive a working frequency point sent by the base station
- a link establishing unit configured to establish a link with the base station at the working frequency point
- a cognitive system supported by a cognitive pilot channel comprising:
- a base station configured to send a frequency point initialization request message to the CPC AP, receive a frequency point initialization response message sent by the CPC AP, where the frequency point initialization response message includes CPC dedicated resource description information, and the channel indicated by the CPC dedicated resource description information
- the uplink terminal broadcasts the sensing information of the base station and the uplink access channel description information; receives the sensing information of the terminal on the CPC dedicated resource, determines the working frequency according to the sensing information of the terminal, and sends the working frequency of the decision to the terminal; The working frequency of the decision establishes a link with the terminal;
- a terminal configured to receive a frequency point initialization response message of the CPC AP broadcast, where the frequency point initialization response message includes CPC dedicated resource description information, and receive the base station's sensing information and uplink access on the channel indicated by the CPC dedicated resource description information.
- Channel description information transmitting, on the channel indicated by the uplink access channel description information, the sensing information of the terminal to the base station; the intersection of the sensing information of the base station and the sensing information of the terminal is not empty; and the working frequency point sent by the receiving base station is The working frequency establishes a link with the base station.
- the base station does not use the broadcaster ID to the terminal, avoids the use of the large-valued ID, and reduces the complexity of the system implementation;
- the CPC AP allocates the area to the area where the base station is located.
- the dedicated resources of the CPC, the base station does not need to be located, and the terminal does not need to judge the geographical location of the base station, and does not need to introduce a positioning technology, thereby reducing the cost of the system.
- FIG. 1 is a schematic flow chart of a method according to an embodiment of the present invention.
- FIG. 2 is a schematic flowchart of a method according to Embodiment 2 of the present invention.
- FIG. 3 is a schematic flowchart of a method according to Embodiment 3 of the present invention.
- FIG. 4 is a schematic flow chart of a method according to Embodiment 4 of the present invention.
- FIG. 5 is a schematic structural diagram of a four-network according to an embodiment of the present invention.
- FIG. 6 is a schematic structural diagram of a base station according to Embodiment 5 of the present invention.
- FIG. 7 is a schematic structural diagram of a base station according to Embodiment 5 of the present invention.
- FIG. 8 is a schematic structural diagram of a base station according to Embodiment 5 of the present invention.
- FIG. 9 is a schematic structural diagram of a base station according to Embodiment 5 of the present invention.
- FIG. 10 is a schematic structural diagram of a CPC AP according to Embodiment 5 of the present invention.
- FIG. 11 is a schematic structural diagram of a CPC AP according to Embodiment 5 of the present invention.
- FIG. 12 is a schematic structural diagram of a terminal according to Embodiment 7 of the present invention.
- FIG. 13 is a schematic structural diagram of a terminal according to Embodiment 7 of the present invention.
- FIG. 14 is a schematic structural diagram of a terminal according to Embodiment 7 of the present invention.
- FIG. 15 is a schematic structural diagram of a terminal according to Embodiment 7 of the present invention.
- FIG. 16 is a schematic structural diagram of a system according to Embodiment 8 of the present invention.
- Embodiment 1 As shown in FIG. 1 , an embodiment of the present invention provides a method for initializing a cognitive system supported by a cognitive pilot channel, including:
- the 104 Receive the sensing information of the terminal on the CPC dedicated resource, determine a working frequency point according to the sensing information of the terminal, and send the working frequency of the determining to the terminal; the sensing information of the terminal is the sensing information of the terminal and the sensing information of the base station. When the intersection is not empty, the terminal transmits on the channel indicated by the uplink access channel description information.
- step 104 for each terminal, the terminal indicated by the uplink access channel description information is sent by the terminal.
- the uplink access channel that sends the terminal sensing information belongs to the channel indicated by the CPC dedicated resource description information.
- the terminal sends the sensing information of the terminal to the base station on the channel indicated by the uplink access channel description information.
- each terminal transmits terminal sensing information on the channel (i.e., the uplink access channel) of each terminal indicated by the uplink access channel description information.
- the base station receives the sensing information sent by the terminals from the above-mentioned CPC dedicated resources.
- the sensing information of the terminal includes information such as a spectrum set available on the network side and a transmission power of the network side device.
- the terminal may be dissatisfied with the current decision result, and further negotiate the working frequency.
- the resources of the channel indicated by the CPC dedicated resource description information are released.
- the above solutions release resources in a timely manner, which can improve the utilization of resources.
- the receiving terminal before receiving the sensing information of the terminal, obtains a random access request, and if the resource amount of the terminal random access request exceeds the CPC dedicated resource quantity indicated by the CPC dedicated resource description information, sends a resource request to the CPC AP.
- the message is sent to the terminal by the resource information received by the CPC AP.
- receiving a negotiation request sent by the terminal where the negotiation request carries a working frequency point desired by the terminal; determining a new working frequency point according to the working frequency point expected by the terminal, and transmitting a new working frequency point to the terminal; Establishing a link with the terminal at the working frequency of the decision includes: Establishing a link with the terminal at the above new working frequency.
- the above solution proposes a negotiation method in which the working frequency of the base station decision does not satisfy the service requirement of the terminal, and the working frequency of the decision does not satisfy the service requirement of the terminal.
- the channel quality of the working frequency is found according to the measurement of the environment by the terminal.
- the service requirements are not met, or the throughput of the working frequency does not meet the service requirements.
- the method for obtaining the working frequency of the terminal may be: The terminal selects a working frequency point that satisfies the service requirement from the set of channels that it perceives as the working frequency of the terminal according to the service requirement (throughput, delay, etc.).
- the new working frequency of the base station decision may be: after the base station receives the negotiation request of the terminal, The working frequency point is selected as the new working frequency point from the intersection of the available working frequency point set and the terminal's desired working frequency point. It should be noted that the working frequency point expected by the terminal may be a set, and is not limited to only one working frequency point.
- the executor of the foregoing embodiment may be a base station.
- This embodiment avoids the base station to the terminal broadcaster ID, avoids the use of the large-valued ID, and reduces the complexity of the system implementation.
- the CPC AP allocates the area to the area where the base station is located.
- the CPC-specific resources, the base station does not need to be located, and the terminal does not need to judge the geographical location of the base station, and does not need to introduce positioning technology, which reduces the implementation complexity and cost of the system; in addition, the terminal no longer needs the geographical location of the base station. Judging, reducing the complexity of selecting a suitable base station; Finally, the terminal and the base station do not need a CPC AP to relay a large number of messages, saving CPC channel resources.
- Embodiment 2 As shown in FIG. 2, an embodiment of the present invention further provides another cognitive system initialization method supported by a cognitive pilot channel, including:
- the frequency point initialization response message includes CPC dedicated resource description information, and broadcast the frequency point initialization response message to the terminal.
- the CPC resource is re-allocated according to the resource request message, and then the resource information of the allocated CPC is sent to the base station and the terminal.
- the above CPC-specific resources may also be periodically allocated to the cognitive system by the CPC AP without receiving an initialization request.
- the above-mentioned allocated CPC dedicated resources are also allocated to other base stations outside the coverage of the above base station. In this way, CPC resources can be reused to improve CPC resource utilization.
- the executor of the foregoing embodiment may be a CPC AP.
- a dedicated CPC resource is allocated to the base station and the terminal, and the terminal directly communicates with the base station and does not communicate through the CPC AP, thereby saving channel resources between the base station and the CPC AP. It is no longer necessary to broadcast its own ID, which avoids the trouble of using a large ID.
- the base station does not need to perform positioning, thereby saving the problem of introducing difficulty in introducing positioning technology.
- the terminal and the base station do not need CPC AP relay. A large number of messages saves CPC channel resources.
- Embodiment 3 As shown in FIG. 3, an embodiment of the present invention further provides another cognitive system initialization method supported by a cognitive pilot channel, including:
- the method further includes:
- the sending, by the foregoing 303, the sensing information of the terminal to the base station on the channel indicated by the uplink access channel description information includes:
- the processing manner in the case that the CPC-specific resources that the CPC AP may allocate is insufficient, the flexibility of resource allocation is improved, and the solution of the embodiment is more adapted to the needs of actual use.
- the method before sending the sensing information of the terminal, the method further includes:
- the base station determines whether the base station meets the service requirement of the terminal according to the signal strength of the base station, and if yes, performs the sensing information of the transmitting terminal.
- a specific example of the terminal selecting the base station is given. It is to be understood that the selection of the base station may be performed in other manners, which is not limited in the embodiment of the present invention.
- the method further includes: detecting whether the working frequency point meets a service requirement of the terminal, and if not, sending a negotiation request to the base station, where the negotiation request carries a working frequency point desired by the terminal;
- the working frequency point; establishing the link with the base station at the above working frequency point includes: establishing a link with the base station at the new working frequency point.
- the executor of the foregoing embodiment may be a terminal.
- the terminal obtains the dedicated resource of the CPC allocated by the CPC AP, and the terminal communicates with the base station without communication through the CPC AP, thereby saving the channel between the base station and the CPC AP. Resources; in addition, the terminal does not need to be positioned, thus reducing the introduction The problem of promotion difficulties caused by positioning technology.
- Embodiment 4 This embodiment provides a specific example for explaining the entire networking process of the CPC system. As shown in FIG. 4, the specific process includes:
- the terminal and the base station are powered on and scan the CPC channel to obtain an available spectrum set.
- the available spectrum set is a set of frequency points that are not used in the CPC registration, and the terminal and the base station can select an appropriate frequency point to work therein;
- the terminal and the base station perform spectrum sensing, perform sensing in the set of available frequency points given by the CPC, complete evaluation of each frequency point, and then the base station sends a random access request to the CPC AP to obtain a sending resource of the next message, and The CPC establishes a bearer;
- the base station After the base station establishes a bearer with the CPC AP, the base station sends a frequency point initialization request message to the CPC AP.
- the CPC AP After receiving the frequency initialization request message, the CPC AP allocates dedicated resources in the CPC resource for establishment of the cognitive system, and the dedicated resource can be used for establishment of other small-scale coverage cognitive systems;
- the resource description information is sent to the base station and the terminal, and the foregoing sending manner may be broadcast;
- the CPC AP since the CPC AP supports a wide range of coverage, it may be hundreds of kilometers, and various types of cells may be included under it.
- the cognitive network exists in a small area, and may only be several tens of meters, such as a home and a conference place.
- a base station only supports terminal access of a home or a conference room.
- the terminal and the base station negotiate the working frequency point by sensing the surrounding environment; since the cognitive network only covers in a small area, and the CPC network covers the network extensively,
- the dedicated resources allocated to the cognitive system can be multiplexed without the cognitive networks interfering with each other.
- the dedicated resources of the cognitive system are allocated by the CPC AP to the network of three cognitive radios (Cognitive Radio, CR) within the CPC coverage.
- the base station After obtaining the dedicated channel allocated by the CPC, the base station releases the link, removes the bearer in the 402 from the CPC AP, and broadcasts on the dedicated channel, where the broadcast content includes the base station's sensing information and the uplink access channel description information.
- the terminal may determine, according to the signal strength, whether the base station can meet the service requirement, and select a base station that satisfies the terminal service according to the sensing information of the terminal and the sensing information of the base station.
- the intersection of the sensing information of the base station may not be empty, if it is empty, it means that the same available channel is not perceived, and the uplink access description information is read, according to the above Sending a random access request to the base station by the location of the random access resource;
- the base station receives the random access request of the multiple users, and determines whether the dedicated channel resource needs to be adjusted according to the number of the cognitive users.
- the specific determining manner may be determining whether the CPC dedicated resource is greater than or equal to the resource requested by multiple users. If the dedicated channel resource does not need to be adjusted, the user may enter the 408. If no, the resource request is sent to the CPC AP, and the resource is sent to the terminal, and the obtained resource information is sent to the terminal, and the resource is reported to the terminal.
- the base station allocates the resource reported by the sensing result to the terminal, that is, the uplink access channel, and the information of the uplink access channel may be carried by the uplink access channel description information.
- the terminal reports the sensing information to the base station on the resource; the channel resource indicated by the uplink access channel information belongs to the channel indicated by the CPC dedicated resource, and the base station sends the sensing information and the uplink access channel description information, and
- the terminal receives the above information sent by the base station using the channel indicated by the CPC dedicated resource; and the terminal transmits the information to the base station, and uses the channel resource allocated by the base station for the terminal, that is, the channel indicated by the uplink access channel description information.
- the base station After receiving the sensing information of the terminal, the base station combines the sensing result, determines the working frequency, and broadcasts the decision result;
- the terminal After obtaining the information about the working frequency of the broadcast, the terminal determines whether it is the most reasonable working frequency. If it is not possible to continue to send a message to the base station, including the expected working frequency of the terminal, finally reach the same as the base station, and then switch to the above.
- Working frequency establishing a link with the base station; thereby completing the cognitive network networking;
- the base station sends a request to the CPC AP to release the CPC dedicated resource.
- a dedicated CPC resource is allocated to the base station and the terminal, and the terminal directly communicates with the base station and does not communicate through the CPC AP, thereby saving channel resources between the base station and the CPC AP; and avoiding the base station to the terminal broadcaster ID, avoiding large
- the use of the numerical ID reduces the complexity of the system implementation; since the CPC AP allocates the CPC-specific resources of the area to the area where the base station is located, the base station does not need to perform positioning, and the terminal does not need to judge the geographical location of the base station, and does not need to The introduction of positioning technology reduces the implementation complexity and cost of the system; the terminal no longer needs to judge the geographical location of the base station, which reduces the complexity of selecting a suitable base station.
- Embodiment 5 As shown in FIG. 6, an embodiment of the present invention provides a base station, including:
- An initialization request sending unit 601 configured to send a frequency point initialization request message to the CPC AP;
- the initialization response receiving unit 602 is configured to receive a frequency point initialization response message sent by the CPC AP, where the frequency point initialization response message includes CPC dedicated resource description information;
- the broadcasting unit 603 is configured to: broadcast, on the channel indicated by the CPC dedicated resource description information, the sensing information and the uplink access channel description information of the base station to the terminal;
- the sensing information receiving unit 604 is configured to receive the sensing information of the terminal on the CPC dedicated resource, where the sensing information of the terminal is that when the intersection of the sensing information of the terminal and the sensing information of the base station is not empty, the terminal describes the uplink access channel. Sent on the channel indicated by the information;
- the working frequency point decision unit 605 is configured to determine a working frequency point according to the sensing information of the terminal, and the working frequency point sending unit 606 is configured to send the working frequency of the determining to the terminal;
- the link establishing unit 607 is configured to establish a link with the terminal at the working frequency of the above decision.
- the foregoing base station further includes:
- the releasing unit 701 is configured to release the resources of the channel indicated by the CPC dedicated resource description information after the decision frequency is completed.
- the foregoing base station further includes:
- a random access request receiving unit 801 configured to receive a random access request of the terminal
- the resource request sending unit 802 is configured to: if the resource amount of the terminal random access request exceeds the CPC dedicated resource quantity indicated by the foregoing CPC dedicated resource description information, send a resource request message to the CPC AP; the resource information sending unit 803 is configured to receive The resource information returned to the CPC AP is sent to the terminal.
- the foregoing base station further includes:
- the negotiation request receiving unit 901 is configured to receive a negotiation request sent by the terminal, where the negotiation request carries a working frequency point desired by the terminal;
- the working frequency decision unit 605 is further configured to determine a new working frequency point according to the working frequency point expected by the terminal;
- the working frequency transmitting unit 606 is further configured to send a new working frequency point to the terminal.
- the link establishing unit 607 is configured to establish a link with the terminal at the new working frequency point.
- the base station in this embodiment does not need to broadcast its own ID, which avoids the trouble of using a large ID.
- the base station does not need to perform positioning, thereby saving the problem of introducing the positioning technology, and again, the terminal no longer needs to The geographical location of the base station is judged, which reduces the complexity of selecting a suitable base station.
- Embodiment 6 As shown in FIG.
- an embodiment of the present invention further provides a CPC AP, including: an initialization request receiving unit 1001, configured to receive a frequency point initialization request message sent by a base station; and a dedicated resource allocation unit 1002, configured to After receiving the frequency point initialization request message sent by the base station, allocating the CPC dedicated resource to the base station;
- a CPC AP including: an initialization request receiving unit 1001, configured to receive a frequency point initialization request message sent by a base station; and a dedicated resource allocation unit 1002, configured to After receiving the frequency point initialization request message sent by the base station, allocating the CPC dedicated resource to the base station;
- the initialization response sending unit 1003 is configured to send a frequency point initialization response message to the base station, where the frequency point initialization response message includes CPC dedicated resource description information;
- the broadcasting unit 1004 is configured to broadcast the foregoing frequency point initialization response message to the terminal.
- the dedicated resource allocation unit 1002 is further configured to: when receiving the resource request message sent by the base station, reallocating the CPC resource according to the resource request message;
- the method further includes: a resource information sending unit 1101, configured to send resource information of the allocated CPC to the base station and the terminal.
- a dedicated CPC resource is allocated to the base station and the terminal, and the terminal communicates with the base station without communication through the CPC AP, which saves channel resources between the base station and the CPC AP.
- the base station does not need to broadcast its own ID, thereby avoiding The trouble of using a large ID is solved; again, the base station does not need to perform positioning, thereby saving the problem of the promotion difficulty brought by the introduction of the positioning technology; finally, the terminal and the base station do not need the CPC AP to relay a large number of messages, thereby saving CPC channel resources.
- Embodiment 7 As shown in FIG.
- an embodiment of the present invention further provides a terminal, including: an initialization response receiving unit 1201, configured to receive a frequency point initialization response message broadcasted by a CPC AP, where the frequency point initialization response message includes a CPC.
- a terminal including: an initialization response receiving unit 1201, configured to receive a frequency point initialization response message broadcasted by a CPC AP, where the frequency point initialization response message includes a CPC.
- the information receiving unit 1202 is configured to receive the sensing information of the base station and the uplink access channel description information on the channel indicated by the CPC dedicated resource description information.
- the sensing information sending unit 1203 is configured to: when the intersection of the sensing information of the terminal and the sensing information of the base station is non-empty, send the sensing information of the terminal to the base station on the channel indicated by the uplink access channel description information, and the sensing of the terminal Information is used to enable the base station to determine the operating frequency point;
- the working frequency point receiving unit 1204 is configured to receive a working frequency point sent by the base station;
- the link establishing unit 1205 is configured to establish a link with the base station at the working frequency point.
- the foregoing terminal further includes:
- the random access request sending unit 1301 is configured to send a random access request message to the base station;
- the resource information receiving unit 1302 is configured to receive resource information.
- the sensing information sending unit 1203 is configured to send, according to the uplink access channel description information, the sensing information of the terminal to the base station on the channel indicated by the resource information.
- the foregoing terminal further includes:
- the determining unit 1401 is configured to determine, according to the signal strength of the base station, whether the base station meets a service requirement of the terminal;
- the above-described sensing information transmitting unit 1203 is configured to execute the sensing information of the transmitting terminal when the determining unit 1401 determines that it is satisfied.
- the foregoing terminal further includes:
- the detecting unit 1501 is configured to detect whether the working frequency point meets the service requirement of the terminal, and the negotiation request sending unit 1502 is configured to send a negotiation request to the base station if the detection result of the detecting unit 1501 is not satisfied, where the negotiation request carries the terminal expectation Working frequency
- the working frequency receiving unit 1204 is further configured to receive a new working frequency point sent by the base station; and the link establishing unit 1205 is configured to establish a link with the base station at the new working frequency point.
- Embodiment 8 As shown in FIG. 16, the embodiment of the present invention further provides a cognitive system supported by a cognitive pilot channel, including:
- the base station 1601 is configured to send a frequency point initialization request message to the CPC AP (1602), and receive a frequency point initialization response message sent by the CPC AP (1602), where the frequency point initialization response message includes CPC dedicated resource description information;
- the channel indicated by the description information broadcasts the sensing information of the base station 1601 and the uplink access channel description information to the terminal 1603.
- the sensing information of the receiving terminal 1603 is determined according to the sensing information of the terminal 1603, and the working frequency of the decision is transmitted to the terminal. 1603; establishing a link with the terminal 1603 at the working frequency of the above decision;
- the terminal 1603 is configured to receive a frequency point initialization response message broadcasted by the CPC AP (1602), where the frequency point initialization response message includes CPC dedicated resource description information, and receive the sensing information of the base station 1601 on the channel indicated by the CPC dedicated resource description information.
- Uplink access channel description information transmitting the sensing information of the terminal 1603 to the base station 1601 on the channel indicated by the uplink access channel description information; the intersection of the sensing information of the base station 1601 and the sensing information of the terminal 1603 is non-empty; the receiving base station 1601 sends
- the working frequency point establishes a link with the base station 1601 at the above working frequency.
- the foregoing base station 1601 is further configured to: before receiving the sensing information of the terminal 1603, Receiving the random access request of the terminal 1603, if the resource amount of the random access request of the terminal 1603 exceeds the CPC dedicated resource indicated by the CPC dedicated resource description information, sending a resource request message to the CPC AP (1602), and receiving the CPC The resource information returned by the AP (1602) is sent to the terminal 1603;
- the terminal 1603 is further configured to: before transmitting the sensing information of the terminal 1603, send a random access request message to the base station 1601, and receive the resource information; and send the sensing of the terminal 1603 to the base station 1601 on the channel indicated by the uplink access channel description information.
- the information includes: transmitting, by the uplink access channel description information, the sensing information of the terminal 1603 to the base station 1601 on the channel indicated by the resource information.
- the base station 1601 is further configured to receive a negotiation request sent by the terminal 1603 before establishing a link with the terminal 1603 at the working frequency of the decision, where the negotiation request carries a working frequency point expected by the terminal 1603;
- the working frequency determines a new working frequency, and sends a new working frequency to the terminal 1603; then the establishing the link with the terminal 1603 at the working frequency of the decision includes: establishing and terminal at the new working frequency a link to 1603;
- the terminal 1603 is further configured to detect whether the working frequency point satisfies the service requirement of the terminal 1603 before establishing the link with the base station 1601, and if not, send a negotiation request to the base station 1601, where the negotiation request carries The desired working frequency point of the terminal 1603; the new working frequency point sent by the receiving base station 1601; establishing the link with the base station 1601 at the working frequency point includes: establishing a link with the base station 1601 at the new working frequency point.
- a dedicated CPC resource is allocated to the base station and the terminal, and the terminal directly communicates with the base station, and no longer communicates through the CPC AP, which saves channel resources of the CPC, and the dedicated CPC resource can be reused in different geographical locations, thereby avoiding the base station and the base station.
- the terminal frequently occupies the CPC resources and saves the channel resources of the CPC.
- the base station does not need to broadcast its own ID, which avoids the trouble of using a large ID. Again, the base station does not need to perform positioning, thereby saving the introduction of positioning technology. Promote difficult issues. The terminal no longer needs to judge the geographical location of the base station, which reduces the complexity of selecting a suitable base station.
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Description
Claims
Priority Applications (4)
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RU2012144280/07A RU2510597C1 (ru) | 2010-04-16 | 2011-02-23 | Способ, устройство и система для инициализации когнитивной системы с поддержкой когнитивным пилотным каналом |
BR112012025368A BR112012025368B1 (pt) | 2010-04-16 | 2011-02-23 | método, aparelho e sistema para inicializar sistema cognitivo suportado por canal piloto cognitivo |
EP11768379.7A EP2487977B1 (en) | 2010-04-16 | 2011-02-23 | Method and equipment for initializing cognitive system supported by cognitive pilot channel, and system thereof |
US13/495,661 US8600428B2 (en) | 2010-04-16 | 2012-06-13 | Method, apparatus, and system for initializing cognitive system supported by cognitive pilot channel |
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CN201010150099.5 | 2010-04-16 | ||
CN201010150099.5A CN102223694B (zh) | 2010-04-16 | 2010-04-16 | 感知导频信道支持的认知系统初始化方法、装置和系统 |
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US13/495,661 Continuation US8600428B2 (en) | 2010-04-16 | 2012-06-13 | Method, apparatus, and system for initializing cognitive system supported by cognitive pilot channel |
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US (1) | US8600428B2 (zh) |
EP (1) | EP2487977B1 (zh) |
CN (1) | CN102223694B (zh) |
BR (1) | BR112012025368B1 (zh) |
RU (1) | RU2510597C1 (zh) |
WO (1) | WO2011127767A1 (zh) |
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CN103686739A (zh) * | 2012-09-19 | 2014-03-26 | 电信科学技术研究院 | 一种cpc发送、接收方法及其设备 |
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WO2013172749A1 (en) | 2012-05-15 | 2013-11-21 | Telefonaktiebolaget L M Ericsson (Publ) | Method and device relating to connection to hotspot |
CN103428708B (zh) * | 2013-08-08 | 2016-03-16 | 中国科学院计算技术研究所 | 一种认知无线网络中的无线接入方法和系统 |
CN103957606A (zh) * | 2014-05-23 | 2014-07-30 | 国网四川省电力公司信息通信公司 | 一种基于电力通信系统的数据传输方法 |
US9813203B2 (en) | 2014-06-12 | 2017-11-07 | Empire Technology Development Llc | Generation of a pilot signal in a base station |
CN106900032B (zh) * | 2015-12-21 | 2020-02-28 | 上海诺基亚贝尔股份有限公司 | 上行链路广播传输的方法、终端设备以及网络节点 |
CN111263413B (zh) * | 2020-01-15 | 2021-04-09 | 北京邮电大学 | 一种cr-vanet系统的频谱切换方法、装置及电子设备 |
CN112260724A (zh) * | 2020-10-26 | 2021-01-22 | 青岛鼎信通讯股份有限公司 | 一种中压电力线载波动态组网方法 |
CN114071546B (zh) * | 2021-11-04 | 2023-06-06 | 中国联合网络通信集团有限公司 | 一种数据传输方法、装置及电子设备 |
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Also Published As
Publication number | Publication date |
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US8600428B2 (en) | 2013-12-03 |
RU2510597C1 (ru) | 2014-03-27 |
EP2487977A1 (en) | 2012-08-15 |
EP2487977A4 (en) | 2012-09-26 |
BR112012025368B1 (pt) | 2020-01-21 |
EP2487977B1 (en) | 2014-12-17 |
CN102223694B (zh) | 2014-07-09 |
US20120270588A1 (en) | 2012-10-25 |
BR112012025368A2 (pt) | 2016-06-28 |
CN102223694A (zh) | 2011-10-19 |
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