CN101002433A - Method and apparatus for dynamic frequency reuse - Google Patents
Method and apparatus for dynamic frequency reuse Download PDFInfo
- Publication number
- CN101002433A CN101002433A CN 200580026911 CN200580026911A CN101002433A CN 101002433 A CN101002433 A CN 101002433A CN 200580026911 CN200580026911 CN 200580026911 CN 200580026911 A CN200580026911 A CN 200580026911A CN 101002433 A CN101002433 A CN 101002433A
- Authority
- CN
- China
- Prior art keywords
- frequency
- communication
- user terminal
- network system
- district
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Images
Abstract
A dynamic frequency reuse method and apparatus for use in P2P communication to be executed in a communication network system is proposed in the present invention, comprising steps: determining a group of candidate frequencies for use in P2P communication in a cell according to the predefined radio resource management scheme of the communication network; sending said group of candidate frequencies to a UE in the cell so that the UE can detect the strength of signals using said group of candidate frequencies, thus to determine the frequency for the UE to carry out P2P communication.
Description
Technical field
The present invention relates to a kind of communication network, relate in particular to a kind of dynamic frequency reuse method and device that user terminal carries out direct communication, for example P2P (point-to-point equity) communication that can be used for.
Background technology
In traditional cell mobile communication systems, user terminal must communicate by the relaying ability and the another one user terminal of base station.Fig. 1 has shown the conventional communication mode in the TD-SCDMA system, universal mobile telecommunications system grounding wireless access network (UTRAN) interactive information that user terminal UE1 and UE2 constitute by base station (Node B) and radio network controller (RNC).Yet, when residing in two user terminal close proximity of same sub-district, adopt the mode of direct communication, should be a kind of more reasonable method, this method is exactly so-called point-to-point peer-to-peer communications, is called for short P2P.P2P communication typically is applied in the uplink and downlink link and all adopts in the TDD wireless system of same carrier, below is example with the TD-SCDMA system just, introduces two kinds of P2P communication patterns.
Fig. 2 has shown a kind of P2P communication pattern.As shown in Figure 2, can directly set up " P2P direct link " (shown in the solid line) that is used for the business transferring data between UE1 and the UE2.UTRAN is then by the communication conditions on the monitoring of the control link (shown in dotted line) between itself and the UE direct link.This P2P communication pattern by base station monitoring is called " online P2P communication ".Online P2P communication pattern has been owing to save the relaying of base station, thereby saved almost 50% Radio Resource, still can keep UTRAN to the P2P control of communication simultaneously.The application people who submits on March 7th, 2003 be that Koninklijke Philips Electronics N.V, application number are respectively the specific implementation method that has disclosed online P2P communication pattern in 03119892.9 and 03119894.5 the patent application, introduces the content that this patent application is disclosed in the mode of insertion here.
Based on above-mentioned online P2P communication pattern, further can set up a kind ofly under the situation that does not have the base station to support, the communication pattern by user terminal self-organizing ground carries out P2P communication is called off-line P2P communication pattern.Fig. 3 illustrates the schematic diagram of off-line P2P communication pattern.As shown in the figure, before carrying out off-line P2P communication, UE1 and UE2 at first under conventional communication mode to UTRAN registers offline P2P communication service, and acquisition P2P communication discriminating code each other, submitting to simultaneously with the application, the application people is a Koninklijke Philips Electronics N.V, and application scheme number is introduced the content that this patent application is disclosed with inserted mode here for having disclosed the detailed process that UE obtains the P2P communication discriminating code in the patent application of CN040033; Then, two UE break away from monitoring and the support of UTRAN, independently set up P2P communication according to the P2P communication discriminating code each other that obtains in the registration process; At last, behind the P2P sign off, UE1 and UE2 turn back to the traditional communication idle pulley again.
This off-line P2P communication is communicated by letter with online P2P and is compared, and has not only saved the expense of signaling, even and UE be positioned at outside the zone that wireless network covers, as be positioned at zones such as ocean, high mountain or battlefield, still can set up the P2P communication linkage.In addition, when two UE distances that are positioned at the sub-district are very near, also can adopt this off-line P2P communication pattern.At this moment, owing to do not control link between UTRAN and the UE, therefore, as long as the transmitting power of UE1 and UE2 is low to the negligible degree of network system, the user just can enjoy than the cheap a lot of off-line P2P communication service of traditional communication.
Two user terminals in the sub-district in residing in the communication network coverage, when adopting online P2P communication pattern or off-line P2P communication pattern to set up the P2P communication link, these two user terminals generally use the frequency that is used for traditional communication of current area to carry out P2P communication.This frequency that is used for traditional communication is that Virtual network operator plans and distribute to the radio frequency resources that use this sub-district in advance when setting up communication network.Therefore, in this sub-district, will occur using two kinds of communication: P2P of same frequency to communicate by letter and traditional communication.
In same sub-district, not only use between P2P communication that same frequency carries out and the traditional communication and can produce mutual interference mutually, also can produce interference between the different right P2P communications user terminal that uses same frequency to carry out.This phase mutual interference exists between the different right off-line P2P communications user terminal of (in the P2P user terminal transmission signals coverage) outside the communication network coverage, in the specific region too.Though uplink/downlink synchronization and the scrambler method such as reuse that for example also once proposed is eliminated or reduced and disturbs, still can not fundamentally solve between P2P communication and the traditional communication, between the paired P2P communications user terminal because of the shared same frequency problem of mutual interference mutually.
Summary of the invention
The dynamic frequency reuse method and the device that the purpose of this invention is to provide a kind of P2P of can be used for communication, adopt this method and device, can eliminate effectively at the shared same frequency of communication network coverage internal cause and the interference that between P2P communication and traditional communication, produces.
According to a kind of dynamic frequency reuse method of in a communications network system, carrying out that can be used for point-to-point equity (P2P) communication of the present invention, comprise step:, determine the one group of Candidate Frequency that can be used for P2P communication of a sub-district (a) according to the predetermined radio resource management scenarios of communication network; (b) will organize Candidate Frequency and send a user terminal that is in this sub-district to, being used for the intensity that this user terminal detects the signal that uses this group Candidate Frequency, thereby definite this user terminal can be used for the P2P communication frequency.
According to a kind of dynamic frequency reuse method of in a user terminal, carrying out that can be used for P2P communication of the present invention, comprise step: the one group of Candidate Frequency that this user terminal carries out P2P communication that can be used for that receives a communications network system transmission, wherein, this group Candidate Frequency is that this communications network system is determined according to frequency planning information and RRM policy information; Detect to use the intensity of the signal of this group Candidate Frequency, can be used for the P2P communication frequency with what determine this user terminal.
According to a kind of communications network system of the present invention, comprising: a determining unit, be used for frequency planning information and RRM policy information according to communication network, determine the one group of Candidate Frequency that can be used for P2P communication of a sub-district; A transmitting element is used for this group Candidate Frequency is sent to a user terminal of this sub-district, being used for the intensity that this user terminal detects the signal that uses this group Candidate Frequency, thus the P2P communication frequency of definite this user terminal.
According to a kind of user terminal of the present invention, comprise: a receiving element, be used to receive the one group of Candidate Frequency that this user terminal carries out P2P communication that can be used for of a communications network system transmission, wherein, this group Candidate Frequency is that this communications network system is determined according to frequency planning information and RRM policy information; A detecting unit is used to detect the intensity of the signal that uses this group Candidate Frequency, with the P2P communication frequency of definite this user terminal.
By with reference to below in conjunction with the content in the description of the drawings and claims, and along with more complete understanding of the invention, other purpose of the present invention and the effect more clear and easy to understand that will become.
The accompanying drawing summary
Fig. 1 is the conventional communication mode schematic diagram in the communication system;
Fig. 2 is the schematic diagram that adopts the TD-SCDMA system of P2P communication pattern;
Fig. 3 is the schematic diagram that adopts the TD-SCDMA system of off-line P2P communication pattern;
Fig. 4 shows the schematic diagram according to the cell frequency distribution of one embodiment of the invention;
Fig. 5 shows the flow chart according to the dynamic frequency reuse method that can be used for P2P communication of one embodiment of the invention;
Accompanying drawing 6 is the user terminal of the dynamic frequency reuse method that can be used for P2P communication of the realization according to one embodiment of the invention and the composition schematic diagram of network system.
In institute's drawings attached, identical label is represented similar or corresponding feature or function.
Detailed Description Of The Invention
Dynamic frequency reuse method according to the present invention's proposition, radio network controller is according to the management strategy of the frequency planning and the Radio Resource of current communication network, determine the Candidate Frequency that can be used for P2P communication of each sub-district, and the Candidate Frequency of each sub-district is broadcast to each user terminal in the sub-district by each base station.Be positioned at a user terminal of sub-district, the P2P communication Candidate Frequency according to its Serving cell detects the signal strength signal intensity of using this Candidate Frequency to communicate, and gives network controller with test results report.Network controller is again according to testing result, in conjunction with the operating position of current all the Candidate Frequency resources of the Serving cell of user terminal, selects one to be suitable for user terminal and to carry out the frequency of P2P communication and send to user terminal in Candidate Frequency.This user terminal utilizes this frequency, that is: the dynamic reuse frequency resource is carried out P2P communication.
Below, will be in conjunction with the accompanying drawings, be example with the TD-SCDMA system, the dynamic frequency reuse method that can be used for P2P communication that the present invention proposes is described.
Accompanying drawing 4 is that the cell frequency in a communication network distributes schematic diagram, supposes that this Virtual network operator has 10 frequency that can work: F1, F2, F3, F4, F5, F6, F7, F8, F9 and F10.The frequency re-use factor that frequency planning adopted of supposing current network is 7, the dominant frequency of the Serving cell A1 of user terminal is F1, the adjacent cell of sub-district A1 is A2, A3, A4, A5, A6 and A7, and its corresponding dominant frequency is followed successively by F2, F3, F4, F5, F6 and F7.Virtual network operator has other frequency F8 that can work, F9 and F10 is a reserve frequency, unallocatedly makes dominant frequency for current arbitrary sub-district to use.
Accompanying drawing 5 is to be example with the user terminal UE1 among the A1 of sub-district, utilizes the signaling link between UE1 and the UTRAN, obtains the process of P2P communication frequency.
As shown in Figure 5, at first: UTRAN determines that according to frequency planning information and frequency resource management strategy information user terminal can be used for the Candidate Frequency (step S10) that P2P communicates by letter among the A1 of sub-district.
When user terminal can be used for the Candidate Frequency of P2P communication in determining sub-district A1, in the 10 frequency F1 to F10 that can work that this Virtual network operator has, UTRAN at first got rid of the work dominant frequency F1 that is used for traditional communication of sub-district A1.Then, according to frequency planning information and RRM strategy, the frequency that can not be used for P2P communication that the further eliminating of UTRAN has been stipulated.For example, frequency F8 has been defined as the frequency of using under the emergency, thereby forbids that P2P communication is used under the non-emergent situation; Adjacent cell A2 is the Hot Spot of traditional communication business load superelevation, has provided against the Candidate Frequency of its dominant frequency F2 as P2P communication in other sub-district.Thus, UTRAN can determine that the Candidate Frequency that in the A1 of sub-district user terminal can be used for P2P communication is F3, F4, F5, F6, F7, F9 and F10.
After user terminal can be used for the Candidate Frequency of P2P communication in determining sub-district A1, UTRAN can be encapsulated in a Candidate Frequency tabulation of being made up of these Candidate Frequencies in the system information, and via a Common Control Channel (for example: the broadcasting Common Control Channel) broadcast this system information (step S20).
Wherein, the information entity that comprises this Candidate Frequency, can constitute a system information separately and be broadcast to user terminal in the sub-district, also can be used as a part of other system informational message, be broadcast to user terminal in the sub-district with the other system informational message.And UTRAN can be updated periodically and broadcast the system information that comprises this Candidate Frequency according to the running status (idle or busy) of management strategy information and network.
UE1 reads this system information on the broadcasting Common Control Channel, and extracts Candidate Frequency (step S30) from this system information.
According to this Candidate Frequency that extracts, the intensity (step S40) of the signal that these Candidate Frequencies of UE1 detection use communicate.
Wherein, the signal that uses these Candidate Frequencies to communicate, can be the signal that is used for traditional communication of adjacent cell, and ongoing P2P signal of communication (this P2P signal of communication can comprise the P2P signal of communication in the current area, also can comprise the P2P signal of communication in the adjacent cell).Therefore, except the pilot signal that the detects adjacent cell intensity with the traditional communication signal that obtains using Candidate Frequency, UE1 also need detect the intensity that these Candidate Frequencies of current use carry out the P2P signal of P2P communication.
According to the signal strength signal intensity that detects, UE1 is with these Candidate Frequencies sort (step S50).Usually, the intensity of the pilot signal of the adjacent cell that detects is more little, show that the base station of this adjacent cell and the distance between UE1 possibility far away is big more, if use the P2P communication frequency of the dominant frequency of this adjacent cell as UE1, then the P2P communication link of UE1 and the interference between the conventional link in this adjacent cell are also just more little; The intensity of the P2P signal that detects is more little, show that distance between this paired P2P communications user terminal and UE1 possibility far away is big more, if use the P2P communication frequency of the employed Candidate Frequency of this paired P2P communications user terminal as UE1, then the interference between UE1 and this paired P2P communications user terminal is also just more little.
UE1 will give UTRAN (step S60) as test results report through the Candidate Frequency of ordering.Certainly, UE1 also can directly report to UTRAN as testing result with the intensity of the signal of detected these Candidate Frequencies of use.In addition, as possible, UE1 can also also report to UTRAN with the information of its present position, for UTRAN reference when determining the P2P communication frequency of suitable UE1.
After receiving the above-mentioned testing result that UE1 provides, UTRAN checks the current operation state of communication network, checks the current behaviour in service of all Candidate Frequencies that is:.According to the testing result that UE1 provides, in conjunction with the current operation state of communication network, UTRAN is that UE1 selects the frequency (step S70) of a suitable frequency as its P2P communication.For example, by the current behaviour in service of Candidate Frequency as can be known, user terminal carries out in the Candidate Frequency of P2P communication in can be used for sub-district A1, if select frequency F3 to surpass predetermined threshold value, then should get rid of the P2P communication frequency of F3 as far as possible as UE1 as the user terminal number that is positioned at sub-district A1 of P2P communication frequency.
When determining the P2P communication frequency of UE1, URTAN can also be with reference to the positional information (for example UE1 is by the positional information of the UE1 of global position system GPS acquisition) of UE1 report, for UE1 determines the P2P communication frequency.For example, according to the positional information of UE1, near UE1,, then should get rid of the P2P communication frequency of F4 as far as possible as UE1 if existing other users are using F4 to carry out P2P communication.
The testing result that reports according to UE1, in conjunction with the current behaviour in service of Candidate Frequency and positional information that can getable UE1, for after UE1 selected (selecting signal strength signal intensity the most weak Candidate Frequency relatively usually) is suitable for the frequency of P2P communication, the frequency that UTRAN will select sends to UE1, and upgrades the frequency behaviour in service information (step S80) of communication network this moment.In the above embodiment of the present invention, UTRAN should get rid of frequency F1, F2, F8, get rid of under the prerequisite of frequency F3 and F4 as far as possible, in frequency F5, F6, F7, F9 and F10, select the most weak frequency of signal strength signal intensity to carry out the frequency of P2P communication as UE1 as far as possible.
UE1 utilizes this frequency after receiving this suitable frequency that UTRAN sends, set up P2P communication link (step S90) with another user terminal.
After UE1 used this P2P communication frequency to finish P2P communication, UE1 sent a request (step S100) that discharges the P2P communication frequency of its use to UTRAN.UTRAN reclaims this P2P communication frequency after receiving this release request, and upgrades the frequency behaviour in service information (step S110) of communication network this moment.
In the above-described embodiments, with the user terminal UE1 in the A1 of sub-district is example, described the process that the UE1 that adopts online P2P communication pattern obtains the P2P communication frequency, this process also can be used for the situation that desire adopts the user terminal of off-line P2P communication pattern to carry out off-line P2P communication again by UTRAN acquisition P2P communication frequency earlier in the sub-district.
UE1 in being in sub-district A1 desires to carry out off-line P2P when communication, and except can obtaining the P2P communication frequency by UTRAN, UE1 can also select to be used for the frequency of off-line P2P communication voluntarily.At this voluntarily in the selection course, UE1 at first obtain UTRAN broadcasting, can be used for the Candidate Frequency that user terminal among the A1 of sub-district carries out P2P, different with above-mentioned steps is, UE1 is carrying out signal search and to Candidate Frequency after pairing signal strength signal intensity sorts according to Candidate Frequency, not to follow execution in step S60, but from the Candidate Frequency of ordering, will be corresponding to the Candidate Frequency of the signal of the intensity minimum that detects, be defined as being suitable for carrying out the suitable frequency of P2P communication, and utilize this suitable frequency, carry out P2P with another user terminal and communicate by letter.
In actual applications, in the time of in UE1 is positioned at the sub-district, communicate by letter for off-line P2P, it is the P2P communication frequency of determining UE1 by UTRAN, still by UE1 oneself decision P2P communication frequency, can determine by the P2P messaging parameter of UTRAN broadcasting, content about this P2P messaging parameter, submitting to simultaneously with the application, the application people is a Koninklijke Philips Electronics N.V, application scheme number has a detailed description in the patent application of CN040035, introduces the content that this patent application is disclosed with inserted mode here.If clearly indication in this P2P messaging parameter, then can by UE1 decide in its sole discretion or by UE1 when registers offline P2P communicates by letter and the UTRAN consult to decide.
When UE1 was in beyond the network coverage of sub-district A1, the frequency that is used for off-line P2P communication should be determined voluntarily by UE1.In this case, UE1 can utilize the Candidate Frequency that obtained by Broadcast Control Channel before the deviated from network coverage, also can utilize the Candidate Frequency in the subscriber identification module (SIM card) that when registers offline P2P communication service, obtains and be stored in UE1, attempt to detect the intensity of pairing pilot signal of this Candidate Frequency and ongoing P2P signal of communication, and selection is corresponding to the Candidate Frequency (Candidate Frequency of this intensity minimum also may be the Candidate Frequency that does not search signal) of detection signal strength minimum, as off-line P2P communication frequency, thereby can reduce and avoid in P2P communication to be in mutual interference mutually between the user that off-line P2P communicates by letter with other.
The above-mentioned dynamic frequency reuse method that can be used for P2P communication, be not only applicable to the frequency re-use factor planned greater than 1 situation, but also be applicable to frequency re-use factor equal 1 but in same sub-district different subregions use the situation of different frequencies, in this case, can be for being in a user terminal in the subregion, dynamically select a different frequency to be used for P2P communication from the dividing frequency of adjacent partition, its selection course and said method are similar.
The above-mentioned dynamic frequency reuse method that can be used for P2P communication, not only can be used for two P2P communications between the user terminal, communicate by letter with the multi-point diffusion between a plurality of receiving terminals but also can be used for a transmission terminal, can also be used for the direct communication between two user terminals in any jumping of multi-hop communication.
The above-mentioned dynamic frequency reuse method that can be used for P2P communication of the present invention can adopt software to realize, also can adopt hardware to realize, or adopts way of hardware and software combination to realize.
According to one embodiment of the present of invention, realizing that the P2P communication frequency that makes a user terminal utilization obtain from network system carries out the process of P2P communication, the composition of this network system and user terminal as shown in Figure 6, wherein identical with user terminal with legacy network system parts are not shown in Figure 6.
As shown in Figure 6, communications network system UTRAN 100 comprises: a determining unit 120, be used for frequency planning information and RRM policy information according to communication network, and determine a plurality of sub-districts Candidate Frequency that can be used for P2P communication separately.Rejected unit 122 wherein is used for according to frequency planning information, in the frequency that this communication network distributed, gets rid of the frequency that a sub-district is used for traditional communication; With according to the RRM policy information, eliminating can not be used for the frequency of P2P communication by the user terminal in this sub-district, with the frequency that remaining this communication network was distributed, the user terminal that is defined as in this sub-district can be used for the described Candidate Frequency that P2P communicates by letter.
Transmitting element 130 among the UTRAN will send to UE1 via Broadcast Control Channel by this Candidate Frequency that determining unit 120 is determined.
Receiving element 10 among the UE1, after receiving this Candidate Frequency, detecting unit 20 wherein detects the intensity of the signal that uses this Candidate Frequency.Wherein, the signal of this Candidate Frequency comprises: the P2P signal of communication in the pilot signal of adjacent cell and the UE1 sub-district of living in.By transmitting element 30, UE1 gives UTRAN with test results report;
Receiving element 150 among the UTRAN behind the examining report of receiving from UE1, offers selected cell 124 with this examining report.Selected cell 124, according to this examining report, the current behaviour in service of the Candidate Frequency of checking in conjunction with inspection unit 140, from Candidate Frequency, determine a suitable frequency, and via transmitting element 130, the frequency that this is suitable sends to UE1, so that UE1 can utilize this suitable frequency to carry out P2P communication.
Receiving element 10 among the UE1 after receiving this suitable frequency that UTRAN sends, offers P2P communication unit 40, communicates by letter to carry out P2P with another user terminal.
In addition, UE1 also comprises a determining unit 50, is used for the detection according to detecting unit 20, will be defined as being used for the suitable frequency of P2P communication voluntarily corresponding to the Candidate Frequency of signal strength signal intensity minimum; And this P2P communication frequency offered P2P communication unit 40.This P2P communication unit 40, this suitable frequency of utilizing UE1 to determine is voluntarily carried out P2P with another user terminal and is communicated by letter.
Beneficial effect
By above-mentioned in conjunction with the accompanying drawings to the detailed description of embodiments of the invention, therefrom as can be seen: according to the dynamic frequency reuse method of the present invention's proposition, communications network system can be according to management strategy information, the P2P communication signal strength in the pilot signal strength of the adjacent cell that user terminal detects and the Serving cell of this user terminal and the frequency behaviour in service of communication network, dynamically communicate by letter to carry out P2P for the suitable frequency of user terminal selecting in the sub-district, so that in the Serving cell scope at this user terminal place, the P2P communication frequency different with traditional uplink and downlink communication use communicates.Therefore, can eliminate the mutual interference mutually that P2P communication and traditional communication cause because of shared same frequency communicates effectively.
In addition, dynamic frequency reuse method according to the present invention's proposition, when being user terminal selecting P2P communication frequency, also considered and be between the paired P2P communications user terminal of P2P in communicating by letter because the issuable P2P of frequency reuse disturbs, therefore, no matter be within the communication network coverage or outside, no matter select online P2P communication pattern or off-line P2P communication pattern, the P2P communication frequency that utilizes the inventive method to provide can both farthest be avoided and reduces phase mutual interference between the paired P2P communications user terminal that is in the P2P communication wireless range.
In addition, dynamic frequency reuse method according to the present invention's proposition, it is that it distributes a new frequency resource that user terminal does not need network, but promptly can set up the link of P2P communication by the frequency reuse of dynamic acquisition, therefore, adopt the dynamic frequency reuse method of the present invention's proposition, can further improve the capacity of communication network.
Those skilled in the art are to be understood that, dynamic frequency reuse method and the device that can be used for P2P communication of the present invention, not only can be used for two P2P communications between the user terminal, send terminal and communicate by letter but also can be used for one, and be used for direct communication between two user terminals in any jumping of multi-hop communication with the multi-point diffusion between a plurality of receiving terminals.
It will be appreciated by those skilled in the art that the dynamic frequency reuse method and the device of the P2P of can be used for communication disclosed in this invention, can on the basis that does not break away from content of the present invention, make various improvement.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (21)
1, a kind of dynamic frequency reuse method of carrying out in a communications network system that can be used for point-to-point equity (P2P) communication comprises step:
(a), determine the one group of Candidate Frequency that can be used for P2P communication of a sub-district according to the predetermined radio resource management scenarios of communication network;
(b) will organize Candidate Frequency and send a user terminal that is in this sub-district to, being used for the intensity that this user terminal detects the signal that uses this group Candidate Frequency, thereby definite this user terminal can be used for the P2P communication frequency.
2, frequency reuse approach as claimed in claim 1, wherein, this predetermined radio resource management scenarios comprises: the frequency planning information of this communication network and RRM policy information.
3, frequency reuse approach as claimed in claim 2, wherein, step (a) comprising:
(a1), in the frequency that this communication network distributed, get rid of the frequency that this sub-district is used for traditional communication according to described frequency planning information;
(a2) according to described RRM policy information, eliminating can not be used for the frequency of P2P communication by the user terminal in this sub-district;
(a3) with the frequency that remaining this communication network distributed, the user terminal that is defined as in this sub-district can be used for this group Candidate Frequency that P2P communicates by letter.
4, frequency reuse approach as claimed in claim 1 or 2, wherein, described communications network system should be organized Candidate Frequency via Broadcast Control Channel and send to described user terminal.
5, frequency reuse approach as claimed in claim 4 also comprises step:
(c) reception is from an examining report of described user terminal, and this examining report comprises the intensity of the signal of this group Candidate Frequency of use that described user terminal detects;
(d), from this group Candidate Frequency, determine a suitable frequency according to this examining report;
(e) this suitable frequency is sent to described user terminal, so that described user terminal can utilize this suitable frequency to carry out P2P communication.
6, frequency reuse approach as claimed in claim 5, wherein step (d) also comprises:
Check the current behaviour in service of this group Candidate Frequency;
According to this check result, determine described suitable frequency.
7, frequency reuse approach as claimed in claim 5, wherein step (d) also comprises:
According to by receiving the positional information of this user terminal that position message obtained that this user terminal sends, determine described suitable frequency.
8, frequency reuse approach as claimed in claim 4 also comprises step:
Reception is from a message that discharges described suitable frequency of described user terminal;
According to this release message, reclaim described suitable frequency.
9, a kind of dynamic frequency reuse method of carrying out in a user terminal that can be used for P2P communication comprises step:
Receive the one group of Candidate Frequency that this user terminal carries out P2P communication that can be used for of a communications network system transmission, wherein, this group Candidate Frequency is that this communications network system is determined according to frequency planning information and RRM policy information;
Detect to use the intensity of the signal of this group Candidate Frequency, can be used for the P2P communication frequency with what determine this user terminal.
10, dynamic frequency reuse method as claimed in claim 9, wherein, the signal of this group Candidate Frequency comprises: the P2P signal of communication in the pilot signal of adjacent cell and this user terminal sub-district of living in.
11, as claim 9 or 10 described dynamic frequency reuse methods, also comprise step:
Give described communications network system with test results report;
Receive the suitable frequency that described communications network system sends, this suitable frequency is that described communications network system is determined from this group Candidate Frequency according to this testing result;
Utilize this suitable frequency, carry out P2P with another user terminal and communicate by letter.
12, dynamic frequency reuse method as claimed in claim 11 also comprises step:
Send a position message to described communications network system, so that described communications network system is also determined described suitable frequency according to this position message.
13, as claim 9 or 10 described dynamic frequency reuse methods, also comprise step:
According to testing result, with in this group Candidate Frequency corresponding to the Candidate Frequency of signal strength signal intensity minimum, be defined as the suitable frequency that this user terminal is used for P2P communication;
Utilize this suitable frequency, carry out P2P with another user terminal and communicate by letter.
14, a kind of communications network system comprises:
A determining unit is used for frequency planning information and RRM policy information according to communication network, determines the one group of Candidate Frequency that can be used for P2P communication of a sub-district;
A transmitting element is used for this group Candidate Frequency is sent to a user terminal of this sub-district, being used for the intensity that this user terminal detects the signal that uses this group Candidate Frequency, thus the P2P communication frequency of definite this user terminal.
15, communications network system as claimed in claim 14, wherein, described determining unit comprises:
A rejected unit is used in the frequency that this communication network distributed, getting rid of the frequency that this sub-district is used for traditional communication according to described frequency planning information; With according to described RRM policy information, eliminating can not be used for the frequency of P2P communication by the user terminal in this sub-district, with with the frequency that remaining this communication network was distributed, be defined as this group Candidate Frequency that user terminal in this sub-district can be used for P2P communication.
16, communications network system as claimed in claim 15 also comprises:
A receiving element is used to receive an examining report from described user terminal, and this examining report comprises the intensity of the signal of this group Candidate Frequency of use that described user terminal detects;
A selected cell according to this examining report, is determined a suitable frequency from this group Candidate Frequency;
Wherein, described transmitting element, the frequency that this is suitable sends to described user terminal, so that described user terminal can utilize this suitable frequency to carry out P2P communication.
17, communications network system as claimed in claim 16 also comprises:
An inspection unit is used to check the current behaviour in service of this group Candidate Frequency;
Wherein, described selected cell according to this check result, is determined described suitable frequency.
18, a kind of user terminal comprises:
A receiving element, be used to receive the one group of Candidate Frequency that this user terminal carries out P2P communication that can be used for of a communications network system transmission, wherein, this group Candidate Frequency is that this communications network system is determined according to frequency planning information and RRM policy information;
A detecting unit is used to detect the intensity of the signal that uses this group Candidate Frequency, with the P2P communication frequency of definite this user terminal.
19, user terminal as claimed in claim 18, wherein, the signal of this group Candidate Frequency comprises: the P2P signal of communication in the pilot signal of adjacent cell and this user terminal sub-district of living in.
20, user terminal as claimed in claim 19 also comprises:
A transmitting element is used for giving described communications network system with test results report;
Wherein, described receiving element receives the suitable frequency that described communications network system sends, and this suitable frequency is that described communications network system is determined from this group Candidate Frequency according to this testing result;
This user terminal also comprises:
A P2P communication unit is used to utilize this suitable frequency, carries out P2P with another user terminal and communicates by letter.
21, user terminal as claimed in claim 19 also comprises:
A determining unit is used for according to testing result, with in this group Candidate Frequency corresponding to the Candidate Frequency of signal strength signal intensity minimum, be defined as the suitable frequency that this user terminal is used for P2P communication;
A P2P communication unit is used to utilize this suitable frequency, carries out P2P with another user terminal and communicates by letter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200580026911 CN101002433A (en) | 2004-08-10 | 2005-08-03 | Method and apparatus for dynamic frequency reuse |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410056538.0 | 2004-08-10 | ||
| CN200410056538.0A CN1735256A (en) | 2004-08-10 | 2004-08-10 | Reuse method and device for dynamic frequency |
| CN 200580026911 CN101002433A (en) | 2004-08-10 | 2005-08-03 | Method and apparatus for dynamic frequency reuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101002433A true CN101002433A (en) | 2007-07-18 |
Family
ID=38693415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200580026911 Pending CN101002433A (en) | 2004-08-10 | 2005-08-03 | Method and apparatus for dynamic frequency reuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101002433A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103379502A (en) * | 2013-07-04 | 2013-10-30 | 西安交通大学 | Spectrum resource distribution method for introducing D2D technology in cellular network |
| WO2014000514A1 (en) * | 2012-06-29 | 2014-01-03 | 华为技术有限公司 | A method for d2d (device to device) communication, user equipment and base station |
| CN104322126A (en) * | 2012-05-21 | 2015-01-28 | 高通股份有限公司 | Determining available resources for D2D communications |
| CN103039103B (en) * | 2010-06-03 | 2016-01-20 | 诺基亚技术有限公司 | Promote the method and apparatus of device-to-device communication |
| CN105657835A (en) * | 2014-11-14 | 2016-06-08 | 联想(北京)有限公司 | Information processing method, electronic device and base station |
-
2005
- 2005-08-03 CN CN 200580026911 patent/CN101002433A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103039103B (en) * | 2010-06-03 | 2016-01-20 | 诺基亚技术有限公司 | Promote the method and apparatus of device-to-device communication |
| CN104322126A (en) * | 2012-05-21 | 2015-01-28 | 高通股份有限公司 | Determining available resources for D2D communications |
| CN104322126B (en) * | 2012-05-21 | 2018-09-28 | 高通股份有限公司 | The method and apparatus for determining the available resources for D2D communications |
| WO2014000514A1 (en) * | 2012-06-29 | 2014-01-03 | 华为技术有限公司 | A method for d2d (device to device) communication, user equipment and base station |
| CN103517276A (en) * | 2012-06-29 | 2014-01-15 | 华为技术有限公司 | D2D communication method, user equipment and base station |
| CN107071905A (en) * | 2012-06-29 | 2017-08-18 | 华为技术有限公司 | Communication between devices method, user equipment and base station |
| CN103379502A (en) * | 2013-07-04 | 2013-10-30 | 西安交通大学 | Spectrum resource distribution method for introducing D2D technology in cellular network |
| CN103379502B (en) * | 2013-07-04 | 2016-02-24 | 西安交通大学 | The frequency spectrum resource allocation method of D2D technology is introduced in a kind of cellular network |
| CN105657835A (en) * | 2014-11-14 | 2016-06-08 | 联想(北京)有限公司 | Information processing method, electronic device and base station |
| CN105657835B (en) * | 2014-11-14 | 2020-03-24 | 联想(北京)有限公司 | Information processing method, electronic equipment and base station |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1735256A (en) | Reuse method and device for dynamic frequency | |
| CN109302720B (en) | Method and equipment for selecting wave beam | |
| US6563809B1 (en) | Subscriber-controlled registration technique in a CDMA system | |
| CN101132617B (en) | Method and system for implementing point-to-point peer communication | |
| CN101421946B (en) | Method and apparatus for performing uplink timing synchronization procedure upon handover in a mobile communications system | |
| CN101904126B (en) | Scrambling code allocation in a cellular communication network | |
| KR101771026B1 (en) | Method and apparatus for data communication while base station is disrupted troyed in wireless communication system | |
| CN102550107B (en) | Method and apparatus for controlling switching between resources and/or communicating resource change information in a wireless communications system | |
| US10624115B2 (en) | Radio resource scheduling method, device and system | |
| CN104081815A (en) | Request-response procedure for wireless network | |
| CN105075385A (en) | Network-assisted UE detection in direct mode UE-to-UE communication | |
| US20060234702A1 (en) | Selective transmission of mobile radio communications system service information | |
| US20180091979A1 (en) | Data transmission method and device, and occupation signal transmission method and device | |
| KR20130135696A (en) | Apparatus and method for performing a network entry procedure in a cloud cell communication system | |
| CN107432044B (en) | Data transmission method and device | |
| CN108271213B (en) | Communication control method, unauthorized transmission method and device | |
| US20070111742A1 (en) | Method and apparatus to increasing system capacity in p2p enabled systems | |
| US20110110250A1 (en) | Method of allocating channel time, method of determining compatible links, and apparatus for processing data | |
| CN114449570B (en) | Communication domain measuring method, storage medium and wireless communication device | |
| CN101002433A (en) | Method and apparatus for dynamic frequency reuse | |
| CN101496428B (en) | Method for detecting district identification collision | |
| CN103109573A (en) | Methods and arrangements for transmission of paging in a communication system | |
| US20160165533A1 (en) | Communication method, station and system | |
| CN111246398A (en) | Low-energy-consumption communication method, device and system and storage medium | |
| CN101002432A (en) | Method and apparatus for limiting P2P communication interference |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |