WO2016019854A1 - 一种资源竞争的方法及设备 - Google Patents

一种资源竞争的方法及设备 Download PDF

Info

Publication number
WO2016019854A1
WO2016019854A1 PCT/CN2015/086038 CN2015086038W WO2016019854A1 WO 2016019854 A1 WO2016019854 A1 WO 2016019854A1 CN 2015086038 W CN2015086038 W CN 2015086038W WO 2016019854 A1 WO2016019854 A1 WO 2016019854A1
Authority
WO
WIPO (PCT)
Prior art keywords
preamble
user equipment
preamble transmission
transmission
state
Prior art date
Application number
PCT/CN2015/086038
Other languages
English (en)
French (fr)
Inventor
赵锐
高秋彬
Original Assignee
电信科学技术研究院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Publication of WO2016019854A1 publication Critical patent/WO2016019854A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a method and device for resource competition.
  • the data communication process between two terminals is as shown in FIG. 1 , and services such as voice and data between two terminals pass through respective base stations (ordinary base station or evolved base station) and a core network. Interact.
  • D2D communication that is, terminal direct-through technology, means that a neighboring terminal (UE) can transmit data through a direct link within a short range without a central node (such as a base station). Forward, as shown in Figure 2.
  • UE neighboring terminal
  • D2D communication has the following advantages:
  • the terminal short-distance direct communication mode can achieve higher data transmission rate, lower delay and lower power consumption
  • the spectrum resources can be effectively utilized by utilizing the widely distributed communication terminals in the network and the short-distance characteristics of the D2D communication link;
  • the direct communication method of D2D can adapt to the local data sharing requirements of services such as wireless end-to-end (P2P), and provide data services with flexible adaptability;
  • P2P wireless end-to-end
  • D2D direct communication can utilize a large number of widely distributed communication terminals in the network to expand the coverage of the network.
  • the distribution is shown in Figure 3a, Figure 3b, Figure 3c and Figure 3d. Each scene can be combined.
  • the user equipment 1 and the user equipment 2 in the D2D communication may be located in the network service scope or outside the network coverage, and the user equipment 1 and the user equipment 2 may be the sender and the receiver.
  • user equipment 1 and user settings The standby device 2 is outside the network coverage; in the scenario shown in FIG. 3b, the user equipment 1 is within the network coverage, the user equipment 2 is outside the network coverage; and the user equipment 1 and the user equipment are shown in FIG. 3c. 2 is within the coverage of the same base station; as shown in Figure 3d, user equipment 1 and user equipment 2 are located within the coverage of different base stations.
  • a typical application scenario in addition to the one-to-one communication mode between users, a typical application scenario also includes a D2D group or broadcast communication, which can be used for fire protection, rescue, and anti-terrorism in public safety applications.
  • the present disclosure provides a method and a device for resource competition, which are used to implement resource competition of small data volume services, reduce overhead occupied by resource competition, and reduce power consumption.
  • a resource competition method including:
  • the user equipment sends the preamble in the preamble transmission opportunity of the sending state, and monitors whether the other user equipment sends the preamble in the preamble sending opportunity in the non-transmission state, if any non-transmission state in the user equipment
  • the preamble transmission opportunity is monitored to have other user equipment If the preamble is sent, the user equipment resource competition fails. Otherwise, the user equipment resources compete successfully.
  • the number of corresponding preamble transmission opportunities increases correspondingly as the number of consecutive competition failures increases in the correspondence relationship
  • the number of preamble transmission opportunities corresponding to the maximum number of consecutive resource competition failure times in the correspondence relationship is the total number of preamble transmission opportunities included in the contention area.
  • the obtained number of preamble transmission opportunities corresponding to the number of consecutive competition failures of the consecutive resources is the number of preamble transmission opportunities of the transmission status in the preamble transmission opportunity of the contention area.
  • the method further includes:
  • the method further includes:
  • the number of consecutive resource competition failures is updated to a preset initial value.
  • the preamble transmission opportunity includes a sending part and a processing part
  • the transmitting part is configured to send a preamble, and the processing part is a guard interval of a transition between a sending state and a receiving state;
  • the transmitting portion is configured to receive a preamble
  • the processing portion is configured to determine whether a preamble is received at the transmitting portion, and a guard interval for receiving a transition between the state and the transmitting state.
  • the preamble transmission opportunity is composed of an integer number of OFDM symbols.
  • the preamble is sent in the preamble sending opportunity of the sending state, and the preamble sending opportunity in the non-transmitting state is monitored whether another user equipment sends the preamble, including:
  • Transmitting a preamble through a subchannel of a contention area transmitting a preamble in a preamble transmission opportunity of the transmission state, and monitoring, by the subchannel of the contention area, a preamble transmission opportunity in a non-transmission state, whether other user equipment transmits a preamble code.
  • the method further includes:
  • a user equipment including:
  • an obtaining unit configured to determine a number of consecutive resource competition failures of the user equipment, and obtain, according to a preset correspondence between a preset number of consecutive resource competition failures and a number of preamble transmission opportunities, obtain the number of competition failures of the determined continuous resources.
  • a determining unit configured to determine, according to the number of the preamble transmission opportunities obtained by the acquiring unit, a preamble transmission opportunity of a transmission state in a preamble transmission opportunity of a contention region of the user equipment, and a preamble transmission in a non-transmission state opportunity;
  • a competing unit configured to send a preamble in a preamble transmission opportunity in the sending state, and in a non-transmission preamble sending opportunity to monitor whether another user equipment sends a preamble, if any one of the user equipments is not If the preamble is sent to another user equipment and the preamble is sent, the user equipment resource competition fails. Otherwise, the user equipment resources compete successfully.
  • the number of corresponding preamble transmission opportunities increases correspondingly as the number of consecutive competition failures increases in the correspondence relationship
  • the number of preamble transmission opportunities corresponding to the maximum number of consecutive resource competition failure times in the correspondence relationship is the total number of preamble transmission opportunities included in the contention area.
  • the number of preamble transmission opportunities corresponding to the number of times of the consecutive resource competition failures obtained by the acquiring unit is the number of preamble transmission opportunities in the transmission status of the preamble transmission opportunity of the contention area.
  • an update unit is further included for:
  • the calculation result obtained by summing the number of consecutive competition failures and the set value is used to update the consecutive resource competition failure times;
  • the number of consecutive resource competition failures is updated to a preset initial value.
  • the preamble transmission opportunity includes a sending part and a processing part
  • the transmitting part is configured to send a preamble, and the processing part is a guard interval of a transition between a sending state and a receiving state;
  • the transmitting portion is configured to receive a preamble
  • the processing portion is configured to determine whether a preamble is received at the transmitting portion, and a guard interval for receiving a transition between the state and the transmitting state.
  • the preamble transmission opportunity is composed of an integer number of OFDM symbols.
  • the contention unit is specifically configured to:
  • Transmitting a preamble through a subchannel of a contention area transmitting a preamble in a preamble transmission opportunity of the transmission state, and monitoring, by the subchannel of the contention area, a preamble transmission opportunity in a non-transmission state, whether other user equipment transmits a preamble code.
  • the contention unit is further configured to:
  • a user equipment including:
  • a memory coupled to the processor via a bus interface and configured to store programs and data used by the processor in performing operations
  • an obtaining unit configured to determine a number of consecutive resource competition failures of the user equipment, and obtain, according to a preset correspondence between a preset number of consecutive resource competition failures and a number of preamble transmission opportunities, obtain the number of competition failures of the determined continuous resources.
  • a determining unit configured to determine, according to the number of the preamble transmission opportunities obtained by the acquiring unit, a preamble transmission opportunity of a transmission state in a preamble transmission opportunity of a contention region of the user equipment, and a preamble transmission in a non-transmission state opportunity;
  • a competing unit configured to send a preamble in a preamble transmission opportunity in the sending state, and in a non-transmission preamble sending opportunity to monitor whether another user equipment sends a preamble, if any one of the user equipments is not If the preamble is sent to another user equipment and the preamble is sent, the user equipment resource competition fails. Otherwise, the user equipment resources compete successfully.
  • the user equipment obtains a preamble transmission opportunity corresponding to the number of consecutive resource competition failures according to a preset correspondence between the preset number of consecutive resource competition failures and the number of preamble transmission opportunities.
  • the code, and the preamble transmission opportunity in the non-transmission state is monitored whether another user equipment sends the preamble, and if any other user equipment is sent to transmit the preamble in any non-transmission preamble transmission opportunity, the resource competition fails. Otherwise, the resources compete successfully.
  • the user equipment can adaptively control the number of preamble transmission opportunities in the transmission state, and compete for resources by simple energy detection or sequence correlation detection.
  • the detection complexity of the user equipment is low, the access probability is high, and the control is sent.
  • the number of preamble transmission opportunities in the state controls the access delay, and only needs to compete for resources in the contention area, which reduces the overhead occupied by resource competition, reduces power consumption, and is suitable for resource competition of small data volume services.
  • 1 is a schematic diagram of an existing cellular communication
  • FIG. 2 is a schematic diagram of a conventional D2D communication
  • FIG. 3a is a schematic diagram of an existing D2D communication application scenario
  • FIG. 3b is a schematic diagram of another existing D2D communication application scenario
  • FIG. 3c is a schematic diagram of another existing D2D communication application scenario
  • FIG. 3d is a schematic diagram of another existing D2D communication application scenario
  • FIG. 4 is a schematic diagram showing a time domain structure of a D2D communication resource according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of a process for a user equipment to compete for resources in D2D communication according to an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram showing the relationship between the number of consecutive contention failures and the number of preambles in the transmission state in the embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of resource competition in an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a preamble transmission opportunity according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of a corresponding relationship between a sub-channel of a contention area and a data transmission area according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure.
  • the time domain includes a contention area and a data transmission area. As shown in FIG. 4, the contention area and the data transmission area are repeatedly repeated according to a certain period. The contention area is used for the resources of the user equipment to compete for the data transmission area.
  • one preamble (preamble) transmission opportunity is a basic unit divided by the time domain resources of the contention area.
  • Step 501 The user equipment determines the number of consecutive resource competition failures, and obtains a preamble transmission corresponding to the determined number of consecutive competition failures according to the preset correspondence between the number of consecutive resource competition failures and the number of preamble transmission opportunities. The number of opportunities.
  • the number of consecutive resource competition failures is defined as the number of times that the user equipment continuously participates in the resource competition and the competition fails. Once the user equipment resources compete successfully, the number of consecutive resource competition failures is set to an initial value, such as zero.
  • the number of corresponding preamble transmission opportunities increases correspondingly with the number of consecutive resource competition failures in the correspondence, so as to improve the probability that the user equipment competes for resources.
  • the number of preamble transmission opportunities corresponding to the maximum number of consecutive resource competition failure times in the correspondence relationship is the total number of preamble transmission opportunities included in the contention area.
  • the maximum number of consecutive resource competition failures is determined according to the maximum access delay of the user equipment and the period of the contention area, and may also be preset according to experience.
  • the maximum latency of a VoIP service is 200 milliseconds (ms), and the period of competition is 40 ms.
  • the maximum value is less than one of 5, for example, it can be 3.
  • the number of preamble transmission opportunities in the transmission state in the contention area is an initial value N 1 .
  • the number of preamble transmission opportunities in the transmission zone in the contention zone is N 2 , N 2 >N 1 .
  • the number of preamble transmission opportunities in the transmission area in the contention area increases accordingly.
  • the number of preamble transmission opportunities in the transmission state in the contention area is N i ; the user equipment (i+1)
  • the number of preamble transmission opportunities in the transmission state in the contention area is N i+1 , and N i+1 >N i .
  • the number of preamble transmission opportunities in the transmission state in the contention area increases by a fixed value (for example, a positive integer of 1, 2, etc.) for each increment of the number of consecutive failures of the user equipment.
  • each preamble transmission opportunity in the contention area is in the transmission state, so as to prevent the user equipment from competing for resources for a long time, so that a certain user equipment in the D2D communication is always Unable to send data.
  • the user equipment is defined to compete for the resources in the i-th time, and the (i-1) times of the resource competition fails. If the user equipment fails to compete, the number of times the user equipment participates in the resource competition increases. The number of consecutive resource competition failures is also increased. If the user equipment competes successfully, the number of times the user equipment participates in the resource competition is cleared. That is, the number of times the user equipment participates in resource competition is 1 when the user equipment participates in resource competition. (The first time to participate in resource competition), and the number of consecutive resource competition failures is zero.
  • Step 502 Determine, according to the obtained number of preamble transmission opportunities, a preamble transmission opportunity of a transmission state in a preamble transmission opportunity of a contention area of the user equipment, and a preamble transmission opportunity of a non-transmission state.
  • the number of preamble transmission opportunities obtained in step 501 is the number of preamble transmission opportunities in the transmission status of the preamble transmission opportunity of the contention area.
  • the number of preamble transmission opportunities obtained in step 501 may be used as the number of preamble transmission opportunities in the non-transmission state of the preamble transmission opportunity of the contention region.
  • the number of preamble transmission opportunities corresponding to the preset non-transmission state is decreased, and the number of consecutive resource competition failures in the corresponding relationship reaches a maximum value, corresponding to the preset
  • the number of preamble transmission opportunities in the non-transmission state is zero.
  • the preamble transmission opportunity corresponding to the number of preamble transmission opportunities obtained in step 501 is selected from the preamble transmission opportunities of the contention area, and the selected preamble transmission opportunity is determined as the preamble transmission opportunity of the transmission state, and The transmission opportunity other than the preamble transmission opportunity of the transmission status of the preamble transmission opportunity of the contention area is determined as the preamble transmission opportunity of the non-transmission state.
  • the manner of determining the preamble transmission opportunity of the transmission status in the preamble transmission opportunity of the contention area and the preamble transmission opportunity of the non-transmission status is not limited thereto, and may also be The scope of protection of the present disclosure is not limited thereto.
  • the calculation is performed by a preset calculation rule, and the number of preamble transmission opportunities of the transmission state in a set of preamble transmission opportunities is determined according to the calculation result.
  • the preamble sending opportunity of the sending state is in an ON state for transmitting the preamble; the sending opportunity of the non-transmitting state is in an OFF state, for silently or monitoring the preamble sent by other user equipments.
  • Step 503 The user equipment sends a preamble in the preamble transmission opportunity of the sending state, and monitors whether the other user equipment sends the preamble in the preamble sending opportunity in the non-transmission state, if any one of the user equipments does not send If the preamble of the status is sent to the other user equipment to send the preamble, the user equipment resource competition fails. Otherwise, the user equipment resources compete successfully.
  • each preamble transmission opportunity in the preamble transmission opportunity of the contention area is processed in sequence:
  • the preamble transmission opportunity is a transmission state, sending a preamble in the preamble transmission opportunity
  • the preamble transmission opportunity is in a non-transmission state, in the preamble transmission opportunity, it is monitored whether another user equipment sends a preamble, and if another user equipment is sent to send the preamble, the resource competition fails, otherwise, the processing continues. a preamble transmission opportunity;
  • the calculation result obtained by summing the number of consecutive resource competition failures and the set value (for example, a positive integer) is used to update the number of consecutive resource competition failures;
  • the number of consecutive resource competition failures is updated to a preset initial value.
  • the number of preamble transmission opportunities obtained by the user equipment according to step 501 is assumed to be represented by N, and the number of preamble transmission opportunities in the transmission status in the preamble transmission opportunity of the contention area, the preamble of the contention area
  • the number of total preamble transmission opportunities included in the code transmission opportunity is represented by M, and then M is greater than or equal to N.
  • the N preamble transmission opportunities are selected in the preamble transmission opportunity of the contention region by the randomization selection mode, and the selected preamble transmission opportunity is marked as ON for the user equipment to send the preamble;
  • the code transmission opportunity is marked as OFF, and the user equipment in the unselected preamble transmission opportunity is in a silent or listening state.
  • the number of combinations of ON/OFF in the preamble transmission opportunity in the contention area can be expressed as:
  • the user equipment 1 transmits a preamble in a contention area in a manner of a randomly selected preamble transmission opportunity ON/OFF combination for competing for resources in the data transmission area.
  • the user equipment 1 sends a preamble in the preamble transmission opportunity of the ON.
  • the user equipment 1 In the OFF preamble transmission opportunity, the user equipment 1 is in a silent state, and is used to monitor whether the other user equipment is sent in the subchannel corresponding to the current preamble transmission opportunity. Preamble.
  • the user equipment 1 stops transmitting the preamble in the subsequent preamble transmission opportunity in the current contention area, that is, the user equipment 1 resource competition. If the user device 1 fails to participate in the resource competition, the number of times the user participates in the resource competition is reset to the initial value of 1.
  • the next preamble transmission opportunity is continued according to the randomly selected ON/OFF combination until the last preamble transmission opportunity is processed, that is, It can be determined that the user equipment 1 resource is successfully competitive.
  • the preamble transmission opportunity for defining the contention area includes 8 preamble transmission opportunities, and the maximum number of times of participating resource competition is 3, that is, the maximum number of consecutive resource competition failures is 2, and the initial is in the transmission state.
  • the number of code transmission opportunities is four, and each time the resource competition fails, the number of preamble transmission opportunities in the transmission state increases by two.
  • the number of preamble transmission opportunities in the transmitting state is 4, among which In the ON/OFF combination mode, the user equipment randomly selects one of the 70 ON/OFF combinations, and performs resource competition according to the selected ON/OFF combination mode.
  • the number of preamble transmission opportunities in the sending state is 6, of which In the ON/OFF combination mode, the user equipment randomly selects one of the 28 ON/OFF combinations, and performs resource competition according to the selected ON/OFF combination mode.
  • the number of preamble transmission opportunities in the transmission state of the user equipment is 8, that is, each preamble transmission opportunity in the preamble transmission opportunity of the contention area is In the transmitting state, there is only one ON/OFF combination mode.
  • a preamble transmission opportunity includes a transmitting portion and a processing portion.
  • the transmitting part is configured to send a preamble
  • the processing part is a guard interval of a transition between the sending state and the receiving state
  • the transmitting portion is configured to receive the preamble
  • the processing portion is configured to determine whether the preamble is received at the transmitting portion, and a guard interval between the receiving state and the transmitting state.
  • the processing part is also called a guard interval (GP).
  • GP guard interval
  • the transmitting part in one preamble transmission opportunity is located before the guard interval; or, the transmitting part in one preamble transmission opportunity is located after the guard interval; or, the guard interval is composed of two sub-protection intervals.
  • the transmit portion of a preamble transmission opportunity is located between two sub-protection intervals.
  • the preamble transmission opportunity consists of an integer number of orthogonal frequency division multiplexing (OFDM) symbols.
  • OFDM orthogonal frequency division multiplexing
  • the length of the GP is 1 OFDM symbol
  • the length of one preamble transmission opportunity is 2 OFDM symbols
  • a set of preamble transmission opportunities may adopt a manner similar to the DMRS sequence in the PUSCH.
  • a set of preamble transmission opportunities may be fixed to an even subcarrier or fixed to an odd number in a manner similar to SRS. Subcarrier.
  • the contention area is divided into multiple subchannels, and the data transmission area is also divided into multiple subchannels, and the contention area sub-information is in one-to-one correspondence with the sub-channels of the data transmission area, as shown in FIG. 9.
  • each subchannel in the contention zone corresponds to a set of preamble transmission opportunities.
  • the preamble is sent through the subchannel of the contention zone, the preamble transmission opportunity in the transmission state, and the preamble transmission opportunity in the non-transmission state is monitored through the subchannel of the contention zone.
  • Other user equipments send preambles.
  • the resource competition fails; if the sub-channel passing through the contention area is in the preamble of each non-transmission state If the preamble sent by other user equipments is not detected in the code transmission opportunity, the resource competition is successful.
  • the subchannel of the contention area in which the resource competition is successful is in the data transmission area.
  • the corresponding subchannel in the middle is in the data transmission area.
  • the contention area is divided into multiple subchannels, and the resources in each subchannel compete independently, and narrowband transmission can be implemented.
  • the user equipment 1 determines the number of consecutive resource competition failures in the contention area, and obtains and determines the corresponding relationship between the number of consecutive consecutive resource competition failures and the number of preamble transmission opportunities.
  • the number of preamble transmission opportunities corresponding to the number of consecutive resource competition failures.
  • the user equipment 1 is currently participating in resource contention in the subchannel 1 in the contention area, and according to the obtained number of preamble transmission opportunities, the preamble transmission opportunity of the transmission status in the preamble transmission opportunity of the subchannel 1 of the contention area is determined and Preamble transmission opportunity in the non-transmission state; transmission of the preamble through the subchannel 1 of the contention zone, transmission of the preamble transmission opportunity in the transmission state, and transmission of the preamble transmission opportunity in the non-transmission state through the subchannel 1 of the contention zone Is there any other user equipment to send the preamble?
  • the user equipment is also provided in the embodiment of the present disclosure.
  • the user equipment is mainly include:
  • the obtaining unit 1001 is configured to determine a number of consecutive resource competition failures of the user equipment, and obtain a competition failure with the determined continuous resource according to a preset correspondence between a preset number of consecutive resource competition failures and a number of preamble transmission opportunities. The number of preamble transmission opportunities corresponding to the number of times;
  • the determining unit 1002 is configured to determine, according to the number of the preamble transmission opportunities obtained by the acquiring unit 1001, the preamble of the transmission status in the preamble transmission opportunity of the contention area of the user equipment. Send opportunity and pre-code transmission opportunity in non-transmission status;
  • the competing unit 1003 is configured to send a preamble in the preamble sending opportunity of the sending state, and in the non-transmitting preamble sending opportunity, to monitor whether another user equipment sends the preamble, if any one of the user equipments If the preamble transmission opportunity of the non-transmission status is monitored, the user equipment resource fails to be transmitted. Otherwise, the user equipment resources compete successfully.
  • the number of corresponding preamble transmission opportunities increases correspondingly as the number of consecutive competition failures increases in the correspondence relationship
  • the number of preamble transmission opportunities corresponding to the maximum number of consecutive resource contention failures in the correspondence relationship is the total number of preamble transmission opportunities included in the contention zone.
  • the number of preamble transmission opportunities corresponding to the number of times the consecutive resource competition failures obtained by the acquisition unit is the number of preamble transmission opportunities in the transmission status of the preamble transmission opportunity of the contention area.
  • the determining unit is specifically used for:
  • the contention unit is specifically used to:
  • Each preamble transmission opportunity in the set of preamble transmission opportunities is processed in sequence:
  • the preamble transmission opportunity is a transmission state, sending a preamble in the preamble transmission opportunity
  • the preamble transmission opportunity is in a non-transmission state, in the preamble transmission opportunity, it is monitored whether another user equipment sends a preamble, and if another user equipment is sent to send the preamble, the resource competition fails, otherwise, the processing continues. a preamble transmission opportunity;
  • the resource competition is successful until no other user equipment transmits the preamble in the preamble transmission opportunity of each non-transmission state.
  • an update unit 1004 is further included, configured to:
  • the number of consecutive resource competition failures is updated to a preset initial value.
  • the preamble transmission opportunity includes a sending part and a processing part
  • the transmitting part is configured to send a preamble, and the processing part is a guard interval of a transition between a sending state and a receiving state;
  • the transmitting portion is configured to receive a preamble
  • the processing portion is configured to determine whether a preamble is received at the transmitting portion, and a guard interval for receiving a transition between the state and the transmitting state.
  • the preamble transmission opportunity is composed of an integer number of OFDM symbols.
  • the contention unit 1003 is specifically configured to:
  • Transmitting a preamble through the subchannel of the contention zone transmitting a preamble transmission opportunity in the transmission state, and listening to the subchannel in the contention zone, and monitoring whether there is another in the non-transmission state preamble transmission opportunity
  • the user equipment sends a preamble.
  • the contention unit 1003 is further configured to:
  • the user equipment mainly includes:
  • the storage unit 1101 is configured to save a correspondence between a preset number of consecutive resource competition failures and a number of preamble transmission opportunities, and a number of consecutive resource competition failures of the user equipment;
  • the processor 1102 is configured to obtain, from the memory, the number of consecutive resource competition failures, and obtain and obtain the continuous resource according to a correspondence between a preset number of consecutive resource competition failures stored in the memory and a number of preamble transmission opportunities.
  • the number of preamble transmission opportunities corresponding to the number of times of the competition failure; determining the preamble transmission opportunity of the transmission status in the preamble transmission opportunity of the contention area and the preamble transmission of the non-transmission status according to the obtained number of transmission opportunities of the preamble Opportunity
  • the transceiver 1103 is configured to send a preamble in a preamble transmission opportunity in the sending state, and in a non-transmission preamble transmission opportunity to monitor whether another user equipment sends a preamble; if in any non-transmission state
  • the preamble transmission opportunity detects that another user equipment sends the preamble, and the processor 1102 determines that the resource competition fails. Otherwise, the processor 1102 determines that the resource competition is successful.
  • the number of corresponding preamble transmission opportunities increases correspondingly as the number of consecutive competition failures increases, and the maximum number of consecutive resource competition failures corresponds to The number of preamble transmission opportunities, which is the total number of preamble transmission opportunities included in the contention area.
  • the number of preamble transmission opportunities corresponding to the number of consecutive competition failures obtained by the processor 1102 is the number of preamble transmission opportunities in the transmission status of the preamble transmission opportunity of the contention area.
  • the processor 1102 selects, from the preamble transmission opportunities of the contention area, a preamble transmission opportunity corresponding to the obtained number of the preamble transmission opportunities, and determines the selected preamble transmission opportunity as a preamble of the transmission state.
  • the code transmission opportunity determines, as the preamble transmission opportunity of the non-transmission state, the transmission opportunity other than the preamble transmission opportunity of the transmission status in the set of preamble transmission opportunities.
  • the transceiver 1103 sequentially processes each preamble transmission opportunity in the preamble transmission opportunity of the contention zone:
  • the preamble transmission opportunity is a transmission state, sending a preamble in the preamble transmission opportunity
  • the preamble transmission opportunity is in a non-transmission state, in the preamble transmission opportunity, it is monitored whether another user equipment sends a preamble, and if another user equipment is sent to send the preamble, the resource competition fails, otherwise, the processing continues. a preamble transmission opportunity;
  • the resource competition is successful until no other user equipment transmits the preamble in the preamble transmission opportunity of each non-transmission state.
  • the processor uses the calculation result that the number of consecutive resource competition failures is summed with the set value, and updates the consecutive resource competition failure times of the user equipment saved in the memory;
  • the processor determines that the resource competition is successful, the number of consecutive resource competition failures of the user equipment saved in the memory is updated to a preset initial value.
  • the preamble transmission opportunity includes a sending part and a processing part
  • the transmitting part is configured to send a preamble, and the processing part is a guard interval of a transition between a sending state and a receiving state;
  • the transmitting portion is configured to receive a preamble
  • the processing portion is configured to determine whether a preamble is received at the transmitting portion, and a guard interval for receiving a transition between the state and the transmitting state.
  • the preamble transmission opportunity consists of an integer number of OFDM symbols.
  • the subchannels in the contention area are in one-to-one correspondence with the subchannels in the data transmission area;
  • the transceiver 1103 transmits a preamble in a preamble transmission opportunity in the transmission state, and transmits a preamble in a preamble transmission opportunity in the transmission state, and monitors whether there are other users in a preamble transmission opportunity in a non-transmission state through a subchannel in the contention area.
  • the device sends a preamble.
  • the memory 1101 further stores a correspondence between the subchannels in the preset contention area and the subchannels in the data transmission area.
  • the processor determines that the resource competition is successful, determining, according to the correspondence between the subchannel in the preset contention area and the subchannel in the data transmission area, the subchannel in the contention area where the resource competition is successful is determined. The corresponding subchannel in the data transmission area.
  • the user equipment obtains a preamble transmission opportunity corresponding to the number of consecutive resource competition failures according to a preset correspondence between the preset number of consecutive resource competition failures and the number of preamble transmission opportunities.
  • the number according to the number of preamble transmission opportunities obtained, determines a preamble transmission opportunity of a transmission status in a set of preamble transmission opportunities and a preamble transmission opportunity in a non-transmission state, and transmits a preamble in a preamble transmission opportunity in a transmission state.
  • the resource competition fails. Otherwise, the resources compete successfully.
  • the user equipment can adaptively control the number of preamble transmission opportunities in the transmission state, and compete by simple energy detection or sequence correlation detection. The detection complexity of resources and user equipment is low, the access probability is high, and the access delay is low, which reduces the overhead occupied by resource competition and is suitable for resource competition of small data volume services.
  • the receiving user equipment is always in the receiving state to know whether there is an increase in the power consumption of the user equipment.
  • embodiments of the present disclosure can be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware aspects. Moreover, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Landscapes

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

Abstract

本公开公开了一种资源竞争的方法及设备，用以资源竞争提供解决方案。该方法包括：确定本用户设备连续资源竞争失败次数，根据预设的连续资源竞争失败次数与前导码发送机会的个数之间的对应关系，获得与确定的连续资源竞争失败次数对应的前导码发送机会的个数；根据获得的所述前导码发送机会的个数，确定本用户设备的竞争区域的前导码发送机会中发送状态的前导码发送机会以及非发送状态的前导码发送机会；若在本用户设备的任意一个非发送状态的前导码发送机会中监听到有其它用户设备发送前导码，则本用户设备资源竞争失败，否则，本用户设备资源竞争成功。

Description

一种资源竞争的方法及设备
相关申请的交叉引用
本申请主张在2014年8月5日在中国提交的中国专利申请号No.201410381512.7的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其涉及一种资源竞争的方法及设备。
背景技术
传统的蜂窝通信技术中，两个终端之间的数据通信流程如图1所示，两个终端之间的语音和数据等业务经过各自驻留的基站(普通基站或演进型基站)以及核心网进行交互。
设备到设备(Device-to-Device，D2D)通信，即终端直通技术，是指邻近的终端(UE)可以在近距离范围内通过直连链路进行数据传输，不需要中心节点(如基站)转发，如图2所示。
D2D通信具有如下优势：
1、终端近距离直接通信方式可实现较高的数据传输速率、较低的时延和较低的功耗；
2、利用网络中广泛分布的通信终端以及D2D通信链路的短距离特点，可有效利用频谱资源；
3、D2D的直接通信方式能够适应如无线端到端(P2P)等业务的本地数据共享需求，提供具有灵活适应能力的数据服务；
4、D2D直接通信能够利用网络中数量庞大且分布广泛的通信终端以拓展网络的覆盖范围。
D2D的应用场景主要有以下四种，分布如图3a、图3b、图3c和图3d所示，各个场景可以组合出现。D2D通信中的用户设备1和用户设备2可以位于网络服务范围内，也可以是位于网络覆盖范围之外，用户设备1和用户设备2可以互为发送方和接收方。在图3a所示的场景中，用户设备1和用户设 备2均处于网络覆盖范围之外；在图3b所示的场景中，用户设备1在网络覆盖范围之内，用户设备2在网络覆盖范围之外；图3c所示，用户设备1和用户设备2在同一基站的覆盖范围之内；图3d所示，用户设备1和用户设备2位于不同基站的覆盖范围之内。
在D2D通信中，除了用户之间的一对一通信方式之外，典型的应用场景还包括D2D的群组或广播通信，该场景可用于公共安全应用中的消防、救援和反恐等。
现有的基于WiFi系统的Carrier Sense Multiple Access with Collision Avoidance(CSMA/CA)方式中，每次数据发送之前均需要竞争资源，一旦竞争到资源就会持续发送数据包，直至数据包发送完成。每次均竞争资源占用的开销太大，不适用于VoIP等小数据量业务的资源竞争，并且在用户数量较多的时候，会导致冲突加剧，造成系统性能恶化。并且，异步通信方式中，接收用户设备需要一直处于接收状态，从而获知是否有业务发生，这将导致用户设备功耗的增加。
发明内容
本公开提供一种资源竞争的方法及设备，用以实现小数据量业务的资源竞争，减少资源竞争所占用的开销，降低功耗。
本公开实施例提供的具体技术方案如下：
第一方面，提供了一种资源竞争方法，包括：
确定本用户设备的连续资源竞争失败次数，根据预设的连续资源竞争失败次数与前导码(preamble)发送机会的个数之间的对应关系，获得与确定的所述连续资源竞争失败次数对应的前导码发送机会的个数；
根据获得的所述前导码发送机会的个数，确定本用户设备的竞争区域的前导码发送机会中发送状态的前导码发送机会以及非发送状态的前导码发送机会；
本用户设备在所述发送状态的前导码发送机会中发送前导码，以及在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码，若在本用户设备的任意一个非发送状态的前导码发送机会中监听到有其它用户设备 发送前导码，则本用户设备资源竞争失败，否则，本用户设备资源竞争成功。
可选地，所述对应关系中随着所述连续资源竞争失败次数的增大，对应的前导码发送机会的个数相应增大；
所述对应关系中所述连续资源竞争失败次数的最大值对应的前导码发送机会的个数，为竞争区域包含的前导码发送机会的总数。
可选地，获得的与所述连续资源竞争失败次数对应的前导码发送机会的个数为所述竞争区域的前导码发送机会中发送状态的前导码发送机会的个数。
可选地，所述资源竞争失败后，所述方法还包括：
采用所述连续资源竞争失败次数与设定值求和所得的计算结果，更新所述连续资源竞争失败次数；
所述资源竞争成功后，所述方法还包括：
将所述连续资源竞争失败次数更新为预设的初始值。
可选地，所述前导码发送机会包括发送部分以及处理部分；
若所述前导码发送机会处于发送状态，
所述发送部分用于发送前导码，所述处理部分为发送状态与接收状态之间的转换的保护间隔；
若所述前导码发送机会处于非发送状态，
所述发送部分用于接收前导码，所述处理部分用于判断是否在发送部分接收到前导码，以及用于接收状态与发送状态之间转换的保护间隔。
可选地，所述前导码发送机会由整数个OFDM符号组成。
可选地，在所述发送状态的前导码发送机会中发送前导码，以及在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码，包括：
通过竞争区域的子信道、在所述发送状态的前导码发送机会中发送前导码，以及所述通过竞争区域的子信道、在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码。
更为可选地，资源竞争成功后，所述方法还包括：
根据预设的竞争区域中的子信道与数据传输区域中子信道之间的对应关系，确定资源竞争成功的所述竞争区域中的子信道在数据传输区域中对应的 子信道。
第二方面，提供了一种用户设备，包括：
获取单元，用于确定本用户设备的连续资源竞争失败次数，根据预设的连续资源竞争失败次数与前导码发送机会的个数之间的对应关系，获得与确定的所述连续资源竞争失败次数对应的前导码发送机会的个数；
确定单元，用于根据所述获取单元获得的所述前导码发送机会的个数，确定本用户设备的竞争区域的前导码发送机会中发送状态的前导码发送机会以及非发送状态的前导码发送机会；
竞争单元，用于在所述发送状态的前导码发送机会中发送前导码，以及在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码，若在本用户设备的任意一个非发送状态的前导码发送机会中监听到有其它用户设备发送前导码，则本用户设备资源竞争失败，否则，本用户设备资源竞争成功。
可选地，所述对应关系中随着所述连续资源竞争失败次数的增大，对应的前导码发送机会的个数相应增大；
所述对应关系中所述连续资源竞争失败次数的最大值对应的前导码发送机会的个数，为竞争区域包含的前导码发送机会的总数。
可选地，所述获取单元获得的与所述连续资源竞争失败次数对应的前导码发送机会的个数为所述竞争区域的前导码发送机会中发送状态的前导码发送机会的个数。
可选地，还包括更新单元，用于：
所述资源竞争失败后，采用所述连续资源竞争失败次数与设定值求和所得的计算结果，更新所述连续资源竞争失败次数；
所述资源竞争成功后，将所述连续资源竞争失败次数更新为预设的初始值。
可选地，所述前导码发送机会包括发送部分以及处理部分；
若所述前导码发送机会处于发送状态，
所述发送部分用于发送前导码，所述处理部分为发送状态与接收状态之间的转换的保护间隔；
若所述前导码发送机会处于非发送状态，
所述发送部分用于接收前导码，所述处理部分用于判断是否在发送部分接收到前导码，以及用于接收状态与发送状态之间转换的保护间隔。
可选地，所述前导码发送机会由整数个OFDM符号组成。
可选地，所述竞争单元具体用于：
通过竞争区域的子信道、在所述发送状态的前导码发送机会中发送前导码，以及所述通过竞争区域的子信道、在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码。
更为可选地，所述竞争单元还用于：
资源竞争成功后，根据预设的竞争区域中的子信道与数据传输区域中子信道之间的对应关系，确定资源竞争成功的所述竞争区域中的子信道在数据传输区域中对应的子信道。
第三方面，提供了一种用户设备，包括：
处理器；以及
存储器，通过总线接口与所述处理器相连接，并且用于存储所述处理器在执行操作时所使用的程序和数据，
当处理器调用并执行所述存储器中所存储的程序和数据时，实现如下的功能模块：
获取单元，用于确定本用户设备的连续资源竞争失败次数，根据预设的连续资源竞争失败次数与前导码发送机会的个数之间的对应关系，获得与确定的所述连续资源竞争失败次数对应的前导码发送机会的个数；
确定单元，用于根据所述获取单元获得的所述前导码发送机会的个数，确定本用户设备的竞争区域的前导码发送机会中发送状态的前导码发送机会以及非发送状态的前导码发送机会；
竞争单元，用于在所述发送状态的前导码发送机会中发送前导码，以及在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码，若在本用户设备的任意一个非发送状态的前导码发送机会中监听到有其它用户设备发送前导码，则本用户设备资源竞争失败，否则，本用户设备资源竞争成功。
基于上述技术方案，本公开实施例中，用户设备根据预设的连续资源竞争失败次数与前导码发送机会的个数之间的对应关系，获得连续资源竞争失败次数对应的前导码发送机会的个数，根据获得的前导码发送机会的个数，确定竞争区域的前导码发送机会中发送状态的前导码发送机会以及非发送状态的前导码发送机会，在发送状态的前导码发送机会中发送前导码，以及在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码，若在任意一个非发送状态的前导码发送机会中监听到有其它用户设备发送前导码，则资源竞争失败，否则，资源竞争成功。使得用户设备可以自适应控制发送状态的前导码发送机会的个数，通过简单的能量检测或序列相关检测的方法竞争资源，用户设备的检测复杂度较低，接入概率较高，通过控制发送状态的前导码发送机会的个数控制接入时延，并且只需在竞争区域中进行资源竞争，降低了资源竞争所占用的开销，降低了功耗，适用于小数据量业务的资源竞争。
附图说明
图1为现有的蜂窝通信示意图；
图2为现有的D2D通信示意图；
图3a为现有的D2D通信应用场景示意图；
图3b为现有的另一D2D通信应用场景示意图；
图3c为现有的另一D2D通信应用场景示意图；
图3d为现有的另一D2D通信应用场景示意图；
图4为本公开实施例中D2D通信资源时域结构示意图；
图5为本公开实施例中D2D通信中用户设备竞争资源的过程示意图；
图6为本公开实施例中连续竞争失败次数与发送状态的前导码个数的关系示意图；
图7为本公开实施例中资源竞争示意图；
图8为本公开实施例中前导码发送机会结构示意图；
图9为本公开实施例中竞争区域与数据传输区域的子信道对应关系示意图；
图10为本公开实施例中用户设备结构示意图；
图11为本公开实施例中另一用户设备结构示意图。
具体实施方式
为了使本公开的目的、技术方案和优点更加清楚，下面将结合附图对本公开作进一步地详细描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本公开保护的范围。
在D2D通信资源池中，时域上包括竞争区域和数据传输区域，如图4所示，竞争区域和数据传输区域按照一定周期重复出现。其中，竞争区域用于用户设备竞争数据传输区域的资源。
本公开实施例中，一个前导码(前导码)发送机会为竞争区域按照时域资源划分的基本单位。
本公开实施例中，如图5所示，D2D通信中用户设备之间竞争资源的具体过程如下：
步骤501：用户设备确定连续资源竞争失败次数，根据预设的连续资源竞争失败次数与前导码发送机会的个数之间的对应关系，获得与确定的该连续资源竞争失败次数对应的前导码发送机会的个数。
其中，连续资源竞争失败次数定义为用户设备连续参与资源竞争且均竞争失败的次数，一旦用户设备资源竞争成功，则连续资源竞争失败次数置为初始值，例如零值。
可选地，该对应关系中随着连续资源竞争失败次数的增大，对应的前导码发送机会的个数相应增大，以提高用户设备竞争到资源的概率。
可选地，该对应关系中连续资源竞争失败次数的最大值对应的前导码发送机会的个数，为竞争区域包含的前导码发送机会的总数。
其中，连续资源竞争失败次数的最大值根据用户设备的最大接入时延以及竞争区域的周期确定，也可以根据经验预设。
例如，VoIP业务的最大时延为200毫秒(ms)，竞争的周期为40ms，那 么用户设备需要在200/40＝5次之内必须竞争到资源。从这个角度上来说，其最大值可以是5。当然在系统设计的时候为了降低接入的时延，最大值是小于5中的一个数，例如可以是3。
具体实施中，如图6所示，用户设备在首次参与资源竞争时，竞争区域中处于发送状态的前导码发送机会的个数为初始值N1。在竞争失败后，竞争区域中处于发送状态的前导码发送机会的个数为N2，N2＞N1。用户设备连续资源竞争失败次数每增加一次，则竞争区域中处于发送状态的前导码发送机会的个数相应增大。用户设备第i次参与资源竞争，且前(i-1)次资源竞争均失败时，在竞争区域中处于发送状态的前导码发送机会的个数为Ni；用户设备第(i+1)次参与资源竞争，且前i次资源竞争均失败时，在竞争区域中处于发送状态的前导码发送机会的个数为Ni+1，且Ni+1＞Ni。
可选地，用户设备连续资源竞争失败次数每增加一次，竞争区域中处于发送状态的前导码发送机会的个数增加固定值(例如1，2等正整数)。
在用户设备连续资源竞争失败次数达到设定的最大值时，竞争区域中每个前导码发送机会均处于发送状态，以避免用户设备长期无法竞争到资源，使得D2D通信中的某一用户设备始终无法发送数据。
本公开实施例中，定义用户设备在第i次参与资源竞争、且之前连续(i-1)次均资源竞争失败，若用户设备本次资源竞争失败，则用户设备参与资源竞争的次数增加1，连续资源竞争失败次数也加1；若用户设备本次资源竞争成功，则将用户设备参与资源竞争的次数清零，即该用户设备在下次参与资源竞争时，其参与资源竞争的次数为1(第1次参与资源竞争)，且连续资源竞争失败次数为零。
步骤502：根据获得的前导码发送机会的个数，确定本用户设备的竞争区域的前导码发送机会中发送状态的前导码发送机会以及非发送状态的前导码发送机会。
可选地，步骤501中获得的前导码发送机会的个数为竞争区域的前导码发送机会中发送状态的前导码发送机会的个数。
实际应用中，也可以将步骤501中获得的前导码发送机会的个数作为竞争区域的前导码发送机会中非发送状态的前导码发送机会的个数，此时，对 应关系中随着连续资源竞争失败次数的增加，对应预设的非发送状态的前导码发送机会的个数减小，在对应关系中的连续资源竞争失败次数达到最大值时，对应预设的非发送状态的前导码发送机会的个数为零。
具体地，从竞争区域的前导码发送机会中选择与步骤501获得的前导码发送机会的个数相应的前导码发送机会，将选择的前导码发送机会确定为发送状态的前导码发送机会，将该竞争区域的前导码发送机会中除该发送状态的前导码发送机会之外的发送机会确定为非发送状态的前导码发送机会。
实际应用中，根据获得的前导码发送机会的个数，确定竞争区域的前导码发送机会中发送状态的前导码发送机会以及非发送状态的前导码发送机会的方式并不限于此，还可以有多种实现方式，本公开的保护范围并不以此为限。
例如，根据获得的前导码发送机会的个数，通过预设的计算规则进行计算，根据该计算结果确定一组前导码发送机会中发送状态的前导码发送机会的个数。
其中，发送状态的前导码发送机会处于ON状态，用以发送前导码；非发送状态的发送机会处于OFF状态，用以静默或监听其它用户设备发送的前导码。
步骤503：本用户设备在发送状态的前导码发送机会中发送前导码，以及在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码，若在本用户设备的任意一个非发送状态的前导码发送机会中监听到有其它用户设备发送前导码，则本用户设备资源竞争失败，否则，本用户设备资源竞争成功。
可选地，依次处理竞争区域的前导码发送机会中的每个前导码发送机会：
若所述前导码发送机会为发送状态，在所述前导码发送机会中发送前导码；
若所述前导码发送机会为非发送状态，在所述前导码发送机会中监听是否有其它用户设备发送前导码，若监听到有其它用户设备发送前导码，资源竞争失败，否则，继续处理下一前导码发送机会；
直至在每个非发送状态的前导码发送机会中均未监听到其它用户设备发 送前导码时，资源竞争成功。
可选地，资源竞争失败后，采用连续资源竞争失败次数与设定值(例如1等正整数)求和所得的计算结果，更新连续资源竞争失败次数；
资源竞争成功后，将连续资源竞争失败次数更新为预设的初始值。
具体实施中，用户设备根据步骤501获得的前导码发送机会的个数，假设用N表示，作为竞争区域的前导码发送机会中的发送状态的前导码发送机会的个数，该竞争区域的前导码发送机会中包含的总的前导码发送机会的个数用M表示，则M大于等于N。
该具体实施中，通过随机化选择方式在竞争区域的前导码发送机会中选择N个前导码发送机会，将选中的前导码发送机会标为ON，用以用户设备发送前导码；未被选中前导码发送机会标为OFF，该未被选中的前导码发送机会中用户设备处于静默或监听状态。则竞争区域中前导码发送机会中ON/OFF的组合的个数可表示为：
Figure PCTCN2015086038-appb-000001
例如，如图7所示，用户设备1在竞争区域中按照一个随机选择的前导码发送机会ON/OFF组合的方式发送前导码，用以竞争数据传输区域中的资源。用户设备1在ON的前导码发送机会中发送前导码，在OFF的前导码发送机会中用户设备1处于静默状态，用于监听当前的前导码发送机会对应的子信道中是否有其它用户设备发送前导码。
如果发现其它用户设备(如用户设备2)在当前的前导码发送机会中发送前导码，则用户设备1停止在当前竞争区域中后续的前导码发送机会中发送前导码，即用户设备1资源竞争失败，则用户设备1在下一次参与资源竞争时，其参与资源竞争的次数重置为初值1。
如果未发现有其它用户设备在当前的前导码发送机会中发送前导码，则按照该随机选择的ON/OFF组合的方式继续下一前导码发送机会，直至最后一个前导码发送机会处理完毕，即可确定用户设备1资源竞争成功。
一个具体实施例中，定义竞争区域的前导码发送机会包含8个前导码发送机会，并且定义参与资源竞争的最大次数为3，即连续资源竞争失败的次数最大为2，初始处于发送状态的前导码发送机会的个数为4，每次资源竞争失败时，发送状态的前导码发送机会的个数增加2。
用户设备在首次参与资源竞争时，处于发送状态的前导码发送机会的个 数为4，其中有
Figure PCTCN2015086038-appb-000002
个ON/OFF组合的方式，用户设备在该70个ON/OFF组合中随机选择一种，并按照选择的ON/OFF组合方式进行资源竞争。
用户设备在首次资源竞争失败后，第二次参与资源竞争时，处于发送状态的前导码发送机会的个数为6，其中有
Figure PCTCN2015086038-appb-000003
个ON/OFF组合的方式，用户设备在该28个ON/OFF组合中随机选择一种，并按照选择的ON/OFF组合方式进行资源竞争。
用户设备在第二次资源竞争失败后，第三次参与资源竞争时，处于发送状态的前导码发送机会的个数为8，即竞争区域的前导码发送机会中的每个前导码发送机会均处于发送状态，此时只有一种ON/OFF组合方式。
可选地，一个前导码发送机会包括发送部分以及处理部分。
具体地，若前导码发送机会处于发送状态，发送部分用于发送前导码，处理部分为发送状态与接收状态之间的转换的保护间隔；
若前导码发送机会处于非发送状态，发送部分用于接收前导码，处理部分用于判断是否在发送部分接收到前导码，以及接收状态与发送状态之间转换的保护间隔。
其中，处理部分也称为保护间隔(GP)。具体实施中，如图8所示，一个前导码发送机会中的发送部分位于保护间隔之前；或者，一个前导码发送机会中的发送部分位于保护间隔之后；或者，保护间隔由两个子保护间隔组成，一个前导码发送机会中的发送部分位于两个子保护间隔之间。
可选地，前导码发送机会由整数个正交频分复用(OFDM)符号组成。
例如，假设GP的长度为1个OFDM符号，则一个前导码发送机会的长度为2个OFDM符号，一组前导码发送机会可以采用类似于PUSCH中的DMRS序列的方式。
又例如，假设一个前导码发送机会的长度为1个OFDM符号，GP的长度为半个OFDM符号，则一组前导码发送机会可以采用类似于SRS的方式，固定为偶数子载波或固定为奇数子载波。
可选地，竞争区域划分为多个子信道，数据传输区域也划分为多个子信道，并且竞争区域子信息与数据传输区域的子信道一一对应，如图9所示。此时，竞争区域中的每个子信道对应一组前导码发送机会。
该可选地实施方式中，通过竞争区域的该子信道、在发送状态的前导码发送机会中发送前导码，以及通过竞争区域的子信道、在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码。
若通过竞争区域的该子信道在任一非发送状态的前导码发送机会中监听到其它用户设备发送的前导码，则资源竞争失败；若通过竞争区域的该子信道在每个非发送状态的前导码发送机会中均未监听到其它用户设备发送的前导码，则资源竞争成功。
该可选地实施方式中，资源竞争成功后，根据预设的竞争区域的子信道与数据传输区域中子信道之间的对应关系，确定资源竞争成功的竞争区域的该子信道在数据传输区域中对应的子信道。
该可选地实施方式中，将竞争区域划分为多个子信道，各子信道中的资源竞争独立进行，可以实现窄带传输。
例如，如图9所示，用户设备1确定在竞争区域中连续资源竞争失败次数，根据预设的连续资源竞争失败次数与前导码发送机会的个数之间的对应关系，获得与确定的该连续资源竞争失败次数对应的前导码发送机会的个数。假设用户设备1当前在竞争区域中的子信道1中参与资源竞争，根据获得的前导码发送机会的个数，确定竞争区域的子信道1的前导码发送机会中发送状态的前导码发送机会以及非发送状态的前导码发送机会；通过竞争区域的子信道1、在发送状态的前导码发送机会中发送前导码，以及通过竞争区域的子信道1、在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码。
基于相同的发明构思，本公开实施例中还提供了一种用户设备，该用户设备的具体实施可参见上述方法部分的描述，重复之处不再赘述，如图10所示，该用户设备主要包括：
获取单元1001，用于确定本用户设备的连续资源竞争失败次数，根据预设的连续资源竞争失败次数与前导码发送机会的个数之间的对应关系，获得与确定的所述连续资源竞争失败次数对应的前导码发送机会的个数；
确定单元1002，用于根据获取单元1001获得的所述前导码发送机会的个数，确定本用户设备的竞争区域的前导码发送机会中发送状态的前导码发 送机会以及非发送状态的前导码发送机会；
竞争单元1003，用于在所述发送状态的前导码发送机会中发送前导码，以及在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码，若在本用户设备的任意一个非发送状态的前导码发送机会中监听到有其它用户设备发送前导码，则本用户设备资源竞争失败，否则，本用户设备资源竞争成功。
可选地，所述对应关系中随着所述连续资源竞争失败次数的增大，对应的前导码发送机会的个数相应增大；
该对应关系中连续资源竞争失败次数的最大值对应的前导码发送机会的个数，为竞争区域包含的前导码发送机会的总数。
优先地，获取单元获得的与所述连续资源竞争失败次数对应的前导码发送机会的个数为所述竞争区域的前导码发送机会中发送状态的前导码发送机会的个数。
确定单元具体用于：
从一组前导码发送机会中选择与获得的所述前导码发送机会的个数相应的前导码发送机会，将选择的所述前导码发送机会确定为发送状态的前导码发送机会，将所述一组前导码发送机会中除所述发送状态的前导码发送机会之外的发送机会确定为非发送状态的前导码发送机会。
可选地，竞争单元具体用于：
依次处理所述一组前导码发送机会中的每个前导码发送机会：
若所述前导码发送机会为发送状态，在所述前导码发送机会中发送前导码；
若所述前导码发送机会为非发送状态，在所述前导码发送机会中监听是否有其它用户设备发送前导码，若监听到有其它用户设备发送前导码，资源竞争失败，否则，继续处理下一前导码发送机会；
直至在每个非发送状态的前导码发送机会中均未监听到其它用户设备发送前导码时，资源竞争成功。
可选地，还包括更新单元1004，用于：
所述资源竞争失败后，采用所述连续资源竞争失败次数与设定值求和所 得的计算结果，更新所述连续资源竞争失败次数；
所述资源竞争成功后，将所述连续资源竞争失败次数更新为预设的初始值。
可选地，前导码发送机会包括发送部分以及处理部分；
若所述前导码发送机会处于发送状态，
所述发送部分用于发送前导码，所述处理部分为发送状态与接收状态之间的转换的保护间隔；
若所述前导码发送机会处于非发送状态，
所述发送部分用于接收前导码，所述处理部分用于判断是否在发送部分接收到前导码，以及用于接收状态与发送状态之间转换的保护间隔。
可选地，所述前导码发送机会由整数个OFDM符号组成。
可选地，所述竞争单元1003具体用于：
通过竞争区域的所述子信道、在所述发送状态的前导码发送机会中发送前导码，以及所述通过竞争区域的所述子信道、在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码。
该可选地实施方式中，竞争单元1003还用于：
资源竞争成功后，根据预设的竞争区域中的子信道与数据传输区域中子信道之间的对应关系，确定资源竞争成功的所述竞争区域中的子信道在数据传输区域中对应的子信道。
基于同一发明构思，本公开实施例中还提供了另一种用户设备，用于D2D通信中，该用户设备的具体实施可参见上述方法部分的描述，重复之处不再赘述，如图11所示，该用户设备主要包括：
存储器1101，用于保存预设的连续资源竞争失败次数与前导码发送机会的个数之间的对应关系，以及该用户设备连续资源竞争失败次数；
处理器1102，用于从存储器中获取连续资源竞争失败次数，根据存储器保存的预设的连续资源竞争失败次数与前导码发送机会的个数之间的对应关系，获得与获取的所述连续资源竞争失败次数对应的前导码发送机会的个数；根据获得的所述前导码发送机会的个数，确定竞争区域的前导码发送机会中发送状态的前导码发送机会以及非发送状态的前导码发送机会；
收发器1103，用于在所述发送状态的前导码发送机会中发送前导码，以及在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码；若在任意一个非发送状态的前导码发送机会中监听到有其它用户设备发送前导码，处理器1102确定资源竞争失败，否则，处理器1102确定资源竞争成功。
可选地，存储器1101中保存的该对应关系中，随着所述连续资源竞争失败次数的增大，对应的前导码发送机会的个数相应增大；连续资源竞争失败次数的最大值对应的前导码发送机会的个数，为竞争区域包含的前导码发送机会的总数。
可选地，处理器1102获得的与所述连续资源竞争失败次数对应的前导码发送机会的个数为所述竞争区域的前导码发送机会中发送状态的前导码发送机会的个数。
具体地，处理器1102从竞争区域的前导码发送机会中选择与获得的所述前导码发送机会的个数相应的前导码发送机会，将选择的所述前导码发送机会确定为发送状态的前导码发送机会，将所述一组前导码发送机会中除所述发送状态的前导码发送机会之外的发送机会确定为非发送状态的前导码发送机会。
可选地，收发器1103依次处理所述竞争区域的前导码发送机会中的每个前导码发送机会：
若所述前导码发送机会为发送状态，在所述前导码发送机会中发送前导码；
若所述前导码发送机会为非发送状态，在所述前导码发送机会中监听是否有其它用户设备发送前导码，若监听到有其它用户设备发送前导码，资源竞争失败，否则，继续处理下一前导码发送机会；
直至在每个非发送状态的前导码发送机会中均未监听到其它用户设备发送前导码时，资源竞争成功。
可选地，处理器确定资源竞争失败后，采用连续资源竞争失败次数与设定值求和所得的计算结果，更新存储器中保存的该用户设备的连续资源竞争失败次数；
处理器确定资源竞争成功后，将存储器中保存的该用户设备的连续资源竞争失败次数更新为预设的初始值。
可选地，前导码发送机会包括发送部分以及处理部分；
若所述前导码发送机会为发送状态，
所述发送部分用于发送前导码，所述处理部分为发送状态与接收状态之间的转换的保护间隔；
若所述前导码发送机会为非发送状态，
所述发送部分用于接收前导码，所述处理部分用于判断是否在发送部分接收到前导码，以及用于接收状态与发送状态之间转换的保护间隔。
可选地，前导码发送机会由整数个OFDM符号组成。
可选地，若所述竞争区域包括多个子信道，所述竞争区域中的子信道与数据传输区域中的子信道一一对应；
收发器1103通过竞争区域中的子信道、在所述发送状态的前导码发送机会中发送前导码，以及通过竞争区域中的子信道、在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码。
可选地，存储器1101中还保存有预设的竞争区域中的子信道与数据传输区域中子信道之间的对应关系；
处理器确定资源竞争成功后，根据存储器中保存的该预设的竞争区域中的子信道与数据传输区域中子信道之间的对应关系，确定资源竞争成功的所述竞争区域中的子信道在数据传输区域中对应的子信道。
基于上述技术方案，本公开实施例中，用户设备根据预设的连续资源竞争失败次数与前导码发送机会的个数之间的对应关系，获得连续资源竞争失败次数对应的前导码发送机会的个数，根据获得的前导码发送机会的个数，确定一组前导码发送机会中发送状态的前导码发送机会以及非发送状态的前导码发送机会，在发送状态的前导码发送机会中发送前导码，以及在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码，若在任意一个非发送状态的前导码发送机会中监听到有其它用户设备发送前导码，则资源竞争失败，否则，资源竞争成功。使得用户设备可以自适应控制发送状态的前导码发送机会的个数，通过简单的能量检测或序列相关检测的方法竞争 资源，用户设备的检测复杂度较低，接入概率较高，接入时延较低，降低了资源竞争所占用的开销，适用于小数据量业务的资源竞争。
本公开实施例中，无需每次在数据发送之前竞争资源，减少了资源竞争的开销，避免了用户数较多时业务冲突加剧的情况，避免了系统性能的恶化。并且，可适用于窄带传输方式。同时，避免了异步的通信方式中，接收用户设备一直处于接收状态以获知是否有业务发生所增加的用户设备的功耗。
本领域内的技术人员应明白，本公开的实施例可提供为方法、系统、或计算机程序产品。因此，本公开可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本公开是参照根据本公开实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本 公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (17)

  1. 一种资源竞争的方法，包括：
    确定本用户设备的连续资源竞争失败次数，根据预设的连续资源竞争失败次数与前导码发送机会的个数之间的对应关系，获得与确定的所述连续资源竞争失败次数对应的前导码发送机会的个数；
    根据获得的所述前导码发送机会的个数，确定本用户设备的竞争区域的前导码发送机会中发送状态的前导码发送机会以及非发送状态的前导码发送机会；
    本用户设备在所述发送状态的前导码发送机会中发送前导码，以及在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码，若在本用户设备的任意一个非发送状态的前导码发送机会中监听到有其它用户设备发送前导码，则本用户设备资源竞争失败，否则，本用户设备源竞争成功。
  2. 如权利要求1所述的资源竞争的方法，其中，所述对应关系中随着所述连续资源竞争失败次数的增大，对应的前导码发送机会的个数相应增大；
    所述对应关系中所述连续资源竞争失败次数的最大值对应的前导码发送机会的个数，为竞争区域包含的前导码发送机会的总数。
  3. 如权利要求1所述的资源竞争的方法，其中，获得的与所述连续资源竞争失败次数对应的前导码发送机会的个数为所述竞争区域的前导码发送机会中发送状态的前导码发送机会的个数。
  4. 如权利要求1-3任一项所述的资源竞争的方法，其中，所述资源竞争失败后，所述方法还包括：
    采用所述连续资源竞争失败次数与设定值求和所得的计算结果，更新所述连续资源竞争失败次数；
    所述资源竞争成功后，所述方法还包括：
    将所述连续资源竞争失败次数更新为预设的初始值。
  5. 如权利要求1-3任一项所述的资源竞争的方法，其中，所述前导码发送机会包括发送部分以及处理部分；
    若所述前导码发送机会处于发送状态，
    所述发送部分用于发送前导码，所述处理部分为发送状态与接收状态之间的转换的保护间隔；
    若所述前导码发送机会处于非发送状态，
    所述发送部分用于接收前导码，所述处理部分用于判断是否在发送部分接收到前导码，以及用于接收状态与发送状态之间转换的保护间隔。
  6. 如权利要求1-3任一项所述的资源竞争的方法，其中，所述前导码发送机会由整数个OFDM符号组成。
  7. 如权利要求1-3任一项所述的资源竞争的方法，其中，在所述发送状态的前导码发送机会中发送前导码，以及在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码，包括：
    通过竞争区域的子信道、在所述发送状态的前导码发送机会中发送前导码，以及所述通过竞争区域的子信道、在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码。
  8. 如权利要求7所述的资源竞争的方法，其中，资源竞争成功后，所述方法还包括：
    根据预设的竞争区域中的子信道与数据传输区域中子信道之间的对应关系，确定资源竞争成功的所述竞争区域中的子信道在数据传输区域中对应的子信道。
  9. 一种用户设备，包括：
    获取单元，用于确定本用户设备的连续资源竞争失败次数，根据预设的连续资源竞争失败次数与前导码发送机会的个数之间的对应关系，获得与确定的所述连续资源竞争失败次数对应的前导码发送机会的个数；
    确定单元，用于根据所述获取单元获得的所述前导码发送机会的个数，确定本用户设备的竞争区域的前导码发送机会中发送状态的前导码发送机会以及非发送状态的前导码发送机会；
    竞争单元，用于在所述发送状态的前导码发送机会中发送前导码，以及在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码，若在本用户设备的任意一个非发送状态的前导码发送机会中监听到有其它用户设备发送前导码，则本用户设备资源竞争失败，否则，本用户设备资源竞争 成功。
  10. 如权利要求9所述的用户设备，其中，所述对应关系中随着所述连续资源竞争失败次数的增大，对应的前导码发送机会的个数相应增大；
    所述对应关系中所述连续资源竞争失败次数的最大值对应的前导码发送机会的个数，为竞争区域包含的前导码发送机会的总数。
  11. 如权利要求9所述的用户设备，其中，所述获取单元获得的与所述连续资源竞争失败次数对应的前导码发送机会的个数为所述竞争区域的前导码发送机会中发送状态的前导码发送机会的个数。
  12. 如权利要求9-11任一项所述的用户设备，其中，还包括更新单元，用于：
    所述资源竞争失败后，采用所述连续资源竞争失败次数与设定值求和所得的计算结果，更新所述连续资源竞争失败次数；
    所述资源竞争成功后，将所述连续资源竞争失败次数更新为预设的初始值。
  13. 如权利要求9-11任一项所述的用户设备，其中，所述前导码发送机会包括发送部分以及处理部分；
    若所述前导码发送机会处于发送状态，
    所述发送部分用于发送前导码，所述处理部分为发送状态与接收状态之间的转换的保护间隔；
    若所述前导码发送机会处于非发送状态，
    所述发送部分用于接收前导码，所述处理部分用于判断是否在发送部分接收到前导码，以及用于接收状态与发送状态之间转换的保护间隔。
  14. 如权利要求9-11任一项所述的用户设备，其中，所述前导码发送机会由整数个OFDM符号组成。
  15. 如权利要求9-11任一项所述的用户设备，其中，所述竞争单元具体用于：
    通过竞争区域的子信道、在所述发送状态的前导码发送机会中发送前导码，以及所述通过竞争区域的子信道、在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码。
  16. 如权利要求15所述的用户设备，其中，所述竞争单元还用于：
    资源竞争成功后，根据预设的竞争区域中的子信道与数据传输区域中子信道之间的对应关系，确定资源竞争成功的所述竞争区域中的子信道在数据传输区域中对应的子信道。
  17. 一种用户设备，包括：
    处理器；以及
    存储器，通过总线接口与所述处理器相连接，并且用于存储所述处理器在执行操作时所使用的程序和数据，
    当处理器调用并执行所述存储器中所存储的程序和数据时，实现如下的功能模块：
    获取单元，用于确定本用户设备的连续资源竞争失败次数，根据预设的连续资源竞争失败次数与前导码发送机会的个数之间的对应关系，获得与确定的所述连续资源竞争失败次数对应的前导码发送机会的个数；
    确定单元，用于根据所述获取单元获得的所述前导码发送机会的个数，确定本用户设备的竞争区域的前导码发送机会中发送状态的前导码发送机会以及非发送状态的前导码发送机会；
    竞争单元，用于在所述发送状态的前导码发送机会中发送前导码，以及在非发送状态的前导码发送机会中监听是否有其它用户设备发送前导码，若在本用户设备的任意一个非发送状态的前导码发送机会中监听到有其它用户设备发送前导码，则本用户设备资源竞争失败，否则，本用户设备资源竞争成功。
PCT/CN2015/086038 2014-08-05 2015-08-04 一种资源竞争的方法及设备 WO2016019854A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410381512.7 2014-08-05
CN201410381512.7A CN105323789B (zh) 2014-08-05 2014-08-05 一种资源竞争的方法及设备

Publications (1)

Publication Number Publication Date
WO2016019854A1 true WO2016019854A1 (zh) 2016-02-11

Family

ID=55250196

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/086038 WO2016019854A1 (zh) 2014-08-05 2015-08-04 一种资源竞争的方法及设备

Country Status (2)

Country Link
CN (1) CN105323789B (zh)
WO (1) WO2016019854A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102387538A (zh) * 2010-09-02 2012-03-21 中兴通讯股份有限公司 一种资源竞争方法和站点
CN103200627A (zh) * 2012-01-04 2013-07-10 中兴通讯股份有限公司 一种解决切换过程中重建立冲突的方法及移动终端
CN103281750A (zh) * 2013-05-31 2013-09-04 北京航空航天大学 保证服务质量和公平性的协作多址接入方法与系统
US20130301541A1 (en) * 2012-05-11 2013-11-14 Research In Motion Limited Method and system for partitioning contention based resources in a wireless network

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014100932A1 (zh) * 2012-12-24 2014-07-03 华为技术有限公司 资源竞争的方法、利用资源竞争的方法及其装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102387538A (zh) * 2010-09-02 2012-03-21 中兴通讯股份有限公司 一种资源竞争方法和站点
CN103200627A (zh) * 2012-01-04 2013-07-10 中兴通讯股份有限公司 一种解决切换过程中重建立冲突的方法及移动终端
US20130301541A1 (en) * 2012-05-11 2013-11-14 Research In Motion Limited Method and system for partitioning contention based resources in a wireless network
CN103281750A (zh) * 2013-05-31 2013-09-04 北京航空航天大学 保证服务质量和公平性的协作多址接入方法与系统

Also Published As

Publication number Publication date
CN105323789B (zh) 2018-12-21
CN105323789A (zh) 2016-02-10

Similar Documents

Publication Publication Date Title
CN109618415B (zh) 一种d2d通信方法及设备
US11166302B2 (en) Method and apparatus for transmitting and receiving scheduling request
KR102550558B1 (ko) 데이터 동시 전송을 위한 무선 통신 방법 및 이를 이용한 무선 통신 단말
US9408214B2 (en) Methods and systems for protection and bandwidth selection for downlink and uplink frequency division multiple access communications
KR101805560B1 (ko) 채널 액세스를 위한 방법, 장치 및 시스템
CN108207027B (zh) 一种随机接入方法及设备
WO2014005481A1 (zh) 一种信号传输方法及装置
Nasraoui et al. Neighbor discovery for ProSe and V2X communications
WO2016062138A1 (zh) 一种设备到设备通信的设备发现装置和方法
WO2018028675A1 (zh) 随机接入信号配置方法、装置、设备、系统和存储介质
CN113692060B (zh) 多天线mimo场景下随机接入资源的配置与更新方法
US10285194B2 (en) D2D communication method and device
US20170127447A1 (en) Station (sta) and method for contention based neighborhood awareness network (nan) communication
WO2017078858A1 (en) Neighborhood awareness network (nan) communication using paging time blocks
CN105409296B (zh) 在蜂窝网络中实现基于设备到设备的组播通信的方法
KR102026792B1 (ko) D2d 탐색 수행 방법 및 그 방법을 사용하는 단말
JP2022523039A (ja) 競合ベースマルチレイヤ送信
WO2016019854A1 (zh) 一种资源竞争的方法及设备
KR20190113423A (ko) 이동통신 시스템에서 스케줄링 요청을 전송하는 방법 및 장치
JP2016521510A (ja) ネットワーク・カバレッジ・フリーの近隣端末発見のための方法、装置およびユーザ機器
CN106559873B (zh) 信息发送方法及装置
CN106550343B (zh) 端到端通信站点发现方法、站点及接入点
CN111107661A (zh) 随机接入资源获取方法及装置
Anbazhagan et al. Improved random access for contention bandwidth request in LTE networks under extended typical urban 70 channel
WO2017195306A1 (ja) 無線通信システム、無線送信局、及び、無線受信局

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15829022

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15829022

Country of ref document: EP

Kind code of ref document: A1