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WO2017088133A1 - Procédé et appareil d'accès aléatoire compétitif - Google Patents

Procédé et appareil d'accès aléatoire compétitif Download PDF

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Publication number
WO2017088133A1
WO2017088133A1 PCT/CN2015/095571 CN2015095571W WO2017088133A1 WO 2017088133 A1 WO2017088133 A1 WO 2017088133A1 CN 2015095571 W CN2015095571 W CN 2015095571W WO 2017088133 A1 WO2017088133 A1 WO 2017088133A1
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WIPO (PCT)
Prior art keywords
random access
user equipment
volunteer
access resource
resource
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.)
Ceased
Application number
PCT/CN2015/095571
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English (en)
Chinese (zh)
Inventor
舒兵
黄亚达
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
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 Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2015/095571 priority Critical patent/WO2017088133A1/fr
Publication of WO2017088133A1 publication Critical patent/WO2017088133A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H04W28/14—Flow control between communication endpoints using intermediate storage

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a competitive random access method and apparatus.
  • the user equipment In the existing mobile communication technology, the user equipment (UE) needs to complete the connection establishment through a random access (Random Access) process before transmitting the service data with the wireless communication network.
  • the user equipment random access procedure can be divided into two types: non-contention based random access and contention based random access.
  • the user equipment selects the random access resource to perform random access, if two user equipments use the same random access resource (for example, two UEs in the LTE frequency band)
  • the same preamble transmits an access signal.
  • the random access signals interfere with each other to generate a collision.
  • the base station cannot identify any one of the signals, and finally the random access fails.
  • the UE needs to re-initiate the access so that the service initiates the access. The increase is increased.
  • the probability of different user equipments using the same random access resources for access is greatly increased, and as a result, a large number of user equipments cannot be accessed normally.
  • the utilization of the random access channel is low.
  • the present invention provides a competitive random access method and apparatus, which are used to reduce the probability of collision of a user equipment in a competitive random access in the prior art, and improve the utilization rate of the random access channel.
  • a competitive random access method comprising:
  • the first device determines to become the volunteer device, receiving the access request sent by the user equipment;
  • the first device allocates a first random access resource to the user equipment according to the access request, so that the user equipment accesses the second device according to the first random access resource, and the first random access
  • the incoming resource is a child of the second random access resource allocated by the second device to the first device set.
  • the first device is a volunteer device, including:
  • the first device is a volunteer device, including:
  • a volunteer device after the first device becomes a volunteer device, include:
  • the first device broadcasts a volunteer device indication message, so that the user device determines the first device that becomes a volunteer device according to the volunteer device indication message.
  • the first device receives a user After the access request sent by the device, it also includes:
  • the first device sends the number of the user equipment to the second device, and receives a second random access resource that is allocated by the second device to the first device according to the number of the user equipment.
  • the method further includes:
  • the device access resource allocation notification message is used to indicate to the second device that the first device is the first random access resource allocated by the user device, so that the second device is configured according to the first device
  • the first random access resource allocated by the user equipment sends a random access response to the user equipment.
  • the method further includes:
  • the first device receives a random access request that is sent by the user equipment according to the first random access resource, and sends the random access request to the second device.
  • the method further includes:
  • the first device receives a random access response sent by the second device, and forwards the random access response to the user equipment.
  • a random access resource includes one or more of the following:
  • Time domain resource frequency domain resource; code resource;
  • the second random access resource includes one or more of the following:
  • Time domain resources frequency domain resources; code resources.
  • a competitive random access method comprising:
  • the second device determines the first device as a volunteer device
  • the second device allocates a second random access resource to the first device, so that the first device allocates a first random access resource to a user equipment that sends an access request to the first device, where A random access resource is a subset of the second random access resource.
  • the second device Identifying the first device as a volunteer device including:
  • the second device receives the volunteer device recruitment response message sent by the first device according to the volunteer device recruitment message, and determines the first device as a volunteer device according to the volunteer device recruitment response message.
  • the method further includes:
  • the second device sends a volunteer device confirmation message to the first device, so that the first device confirms to be a volunteer device according to the confirmation message.
  • the device further includes:
  • the second device broadcasts a first device list, the first device list indicating a first device that becomes a volunteer device, so that the user device determines the first device as the volunteer device according to the first device list.
  • the second device allocates the second random access resource to the first device, including:
  • the second device determines a second random access resource allocated to the first device according to the number of the user equipment.
  • the method further includes:
  • the second device receives a random access request that is sent by the user equipment according to the first random access resource to initiate random access;
  • the second device receives the random access that is forwarded by the first device and is used to initiate random access. And the random access request is sent by the user equipment to the first device according to the first random access resource.
  • the method further includes:
  • the second device sends a random access response to the user equipment according to the first random access resource allocated by the first device to the user equipment.
  • the second device is configured to perform the first random connection that is allocated by the first device to the user equipment
  • the inbound resource sends a random access response to the user equipment, including:
  • the second device sends a random access response to the first device according to the first random access resource allocated by the first device to the user equipment, so that the first device sends the random access response Forwarded to the user equipment;
  • the second device directly sends a random access response to the user equipment in an air interface according to the first random access resource allocated by the first device to the user equipment.
  • a competitive random access method comprising:
  • the first random access resource that is allocated by the first device according to the access request, and accessing the second device according to the first random access resource, where the first random access resource is The second device allocates a subset of the second random access resources of the first device.
  • the determining, by the user equipment, the first device that is the volunteer device includes:
  • the user equipment listens to the volunteer device indication message broadcast by the first device, and determines the first device that becomes the volunteer device according to the volunteer device indication message.
  • the determining, by the user equipment, the first device that is the volunteer device includes:
  • the user equipment listens to the first device list broadcast by the second device, and determines the first device in the first device list.
  • the The first random access resource is connected to the second device, and includes:
  • the method further include:
  • the user equipment receives a random access response sent by the first device, where the random access response is that the second device passes the first random access resource allocated by the first device to the user equipment. Forwarding by the first device to the user equipment; or
  • the user equipment receives the second access device to send a random access response to the user equipment in an air interface according to the first random access resource allocated by the first device to the user equipment.
  • a competitive random access device comprising:
  • a transceiver unit configured to: after receiving the volunteer device, receive an access request sent by the user equipment;
  • An allocating unit configured to allocate a first random access resource to the user equipment according to the access request, so that the user equipment accesses the second device according to the first random access resource, where the first random access
  • the incoming resource is a subset of the second random access resource allocated to the first device by the second device.
  • the transceiver unit is specifically configured to:
  • the transceiver unit is specifically configured to:
  • the transceiver unit is further configured to:
  • Broadcasting the volunteer device indication message so that the user equipment determines the first device that becomes the volunteer device according to the volunteer device indication message.
  • the transceiver unit is further configured to: :
  • the sending and receiving The unit is also used to:
  • the second device sends a random access response to the user equipment according to the first random access resource allocated by the first device to the user equipment.
  • the transceiver unit is further configured to:
  • the sending and receiving The unit is also used to:
  • the first device receives a random access response sent by the second device, and forwards the random access response to the user equipment.
  • a random access resource includes one or more of the following:
  • Time domain resource frequency domain resource; code resource;
  • the second random access resource includes one or more of the following:
  • Time domain resources frequency domain resources; code resources.
  • a competitive random access device comprising:
  • a determining unit configured to determine the first device as a volunteer device
  • An allocating unit configured to allocate a second random access resource to the first device, so that the first device allocates a first random access resource to a user equipment that sends an access request to the first device, where A random access resource is a subset of the second random access resource.
  • the device further includes a transceiver unit, where the transceiver unit is specifically configured to:
  • the device further includes: a transceiver unit, where the transceiver unit is specifically configured to:
  • the device is further The transceiver unit is specifically configured to:
  • the first device list indicating the first device that becomes the volunteer device, so that the user device determines the first device as the volunteer device according to the first device list.
  • the device is further Including transceiver unit:
  • the transceiver unit is configured to receive the number of user equipments sent by the first device;
  • the allocating unit is configured to determine, according to the quantity of the user equipment, a second random access resource allocated to the first device.
  • the device is further Including transceiver unit:
  • the transceiver unit is configured to receive a random access request that is sent by the user equipment according to the first random access resource to initiate random access;
  • the transceiver unit is configured to receive a random access request that is sent by the first device to initiate a random access, where the random access request is sent by the user equipment according to the first random access resource.
  • the first device is configured to receive a random access request that is sent by the first device to initiate a random access, where the random access request is sent by the user equipment according to the first random access resource. The first device.
  • the possible implementation manner of the fifth possible implementation manner in the sixth possible implementation manner of the fifth aspect:
  • the transceiver unit is specifically configured to:
  • the second device sends a random access response to the first device according to the first random access resource allocated by the first device to the user equipment, so that the first device sends the random access response Forwarded to the user equipment;
  • the second device directly sends a random access response to the user equipment in an air interface according to the first random access resource allocated by the first device to the user equipment.
  • a competitive random access device comprising:
  • a determining unit for determining a first device to be a volunteer device a determining unit for determining a first device to be a volunteer device
  • a transceiver unit configured to send an access request to the first device, receive a first random access resource that is allocated by the first device according to the access request, and access the first random access resource according to the The second device, the first random access resource is a subset of the second random access resource allocated by the second device to the first device.
  • the determining unit is specifically configured to:
  • the transceiver unit is specifically configured to:
  • the sending and receiving The unit is specifically used to:
  • the sending and receiving The unit is also used to:
  • a competitive random access device comprising:
  • a transceiver configured to determine an access request sent by the user equipment after becoming a volunteer device
  • a processor configured to allocate a first random access resource to the user equipment according to the access request, so that the user equipment accesses the second device according to the first random access resource, where the first random access
  • the incoming resource is a subset of the second random access resource allocated by the second device to the first device.
  • the transceiver is specifically configured to:
  • the transceiver is specifically configured to:
  • the transceiver is further configured to:
  • Broadcasting the volunteer device indication message so that the user equipment determines the first device that becomes the volunteer device according to the volunteer device indication message.
  • the processor is configured to determine a quantity of user equipment that sends an access request to the first device
  • the transceiver is configured to send the number of the user equipment to the second device, and receive a second random access resource that is allocated by the second device to the first device according to the quantity of the user equipment.
  • the possible implementation manner of the fourth possible implementation manner, in the fifth possible implementation manner of the seventh aspect the sending and receiving Also used to:
  • the second device sends a random access response to the user equipment according to the first random access resource allocated by the first device to the user equipment.
  • the possible implementation manner of the fifth possible implementation manner, in the sixth possible implementation manner of the seventh aspect, the sending and receiving Also used to:
  • the possible implementation manner of the sixth possible implementation manner in the seventh possible implementation manner of the seventh aspect, the sending and receiving Also used to:
  • a random access resource includes one or more of the following:
  • Time domain resource frequency domain resource; code resource;
  • the second random access resource includes one or more of the following:
  • Time domain resources frequency domain resources; code resources.
  • a competitive random access device comprising:
  • a processor configured to determine the first device as a volunteer device
  • the transceiver is configured to allocate a second random access resource to the first device, so that the first device allocates a first random access resource to a user equipment that sends an access request to the first device, where The first random access resource is a subset of the second random access resource.
  • the transceiver is specifically configured to:
  • the processor is configured to determine the first device as a volunteer device according to the volunteer device recruitment response message.
  • the transceiver is specifically used to:
  • the possible implementation manner of the second possible implementation manner in the third possible implementation manner of the eighth aspect, the sending and receiving Specifically used to:
  • the first device list indicating the first device that becomes the volunteer device, so that the user device determines the first device as the volunteer device according to the first device list.
  • the possible implementation manner of the third possible implementation manner in the fourth possible implementation manner of the eighth aspect, the sending and receiving Specifically used to:
  • the processor is configured to determine, according to the quantity of the user equipment, an allocation to the first device The second random access resource.
  • the possible implementation manner of the fourth possible implementation manner in the fifth possible implementation manner of the eighth aspect, the sending and receiving Specifically used to:
  • the transceiver is specifically configured to receive, by using the first device, a random access request for initiating a random access, where the random access request is sent by the user equipment according to the first random access resource.
  • the first device is specifically configured to receive, by using the first device, a random access request for initiating a random access, where the random access request is sent by the user equipment according to the first random access resource.
  • the possible implementation manner of the fifth possible implementation manner in the sixth possible implementation manner of the eighth aspect, the sending and receiving Specifically used to:
  • the transceiver is specifically configured to:
  • a competitive random access device comprising:
  • a transceiver configured to send an access request to the first device, receive a first random access resource that is allocated by the first device according to the access request, and access the first random access resource according to the The second device, the first random access resource is a subset of the second random access resource allocated by the second device to the first device.
  • the transceiver is configured to: listen to a volunteer device indication message broadcast by the first device;
  • the processor is configured to determine, according to the volunteer device indication message, the first device that becomes a volunteer device.
  • the transceiver is specifically configured to:
  • the possible implementation manner of the second possible implementation manner in the third possible implementation manner of the ninth aspect, the sending and receiving Specifically used to:
  • the transceiver is specifically Used for:
  • the user equipment before performing random access, the user equipment first sends an access request to the first device, and receives the first random access resource allocated by the first device, thereby The first random access resource performs random access.
  • the first random access resource originally used for contention is allocated to the user equipment by using the first device, thereby reducing the probability that the user equipment sends a resource collision when performing random access, and improving the random access channel. Capacity.
  • FIG. 1 is a schematic diagram of a D2D scenario according to an embodiment of the present application
  • FIG. 2 is a schematic flowchart of a competitive random access method according to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a competitive random access method according to an embodiment of the present disclosure
  • FIG. 4 is a schematic flowchart of a competitive random access method according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a competitive random access procedure according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a competitive random access procedure according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a competitive random access procedure according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a competitive random access procedure according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a competitive random access procedure according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a competitive random access procedure according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a competitive random access device according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a competitive random access device according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of a competitive random access device according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of a competitive random access device according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of a competitive random access device according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of a competitive random access device according to an embodiment of the present disclosure.
  • the user equipment may be a wired terminal or a wireless terminal, for example, a mobile phone, a computer, a tablet computer, or a personal digital assistant (English: personal digital Assistant, abbreviation: PDA), mobile Internet device (English: mobile Internet device, abbreviation: MID), wearable device, Internet Protocol (English: Internet Protocol, abbreviation: IP) phone, network printer and e-book reader (English: E-book reader) and so on.
  • PDA personal digital Assistant
  • mobile Internet device English: mobile Internet device, abbreviation: MID
  • wearable device Internet Protocol (English: Internet Protocol, abbreviation: IP) phone, network printer and e-book reader (English: E-book reader) and so on.
  • IP Internet Protocol
  • E-book reader English: E-book reader
  • the first device may be a user equipment, and may be a base station, and may be a home base station, for example, a Home eNodeB.
  • the second device may refer to a device in the access network that communicates with the wireless terminal through one or more sectors or cells on the air interface.
  • the second device may be a Base Transceiver Station (BTS) in a Global System for Mobile Communications (GSM), or a Wideband Code Division Multiple Access (Wideband Code Division Multiple Access)
  • BTS Base Transceiver Station
  • GSM Global System for Mobile Communications
  • Wideband Code Division Multiple Access Wideband Code Division Multiple Access
  • the base station (Node B) in the WCDMA system may also be an evolutional Node B (eNB) in the LTE, which is not limited in this embodiment of the present application.
  • eNB evolutional Node B
  • the user equipment and the first device as the volunteer device are devices with D2D (Device-to-Device) capabilities.
  • the D2D capability means that data can be transmitted between devices through a direct link in a short range without forwarding through the central node.
  • services such as voice and data of two user equipments interact with each other through the base station and the core network where the user equipment resides. When the distance between the user equipments is very close, the interaction between the user equipments can be realized through the D2D technology.
  • the short-distance communication characteristics and direct communication mode of D2D technology itself have the following advantages: UE short-distance direct communication mode can achieve higher data rate, lower delay and lower power consumption; utilizes widely distributed users in the network.
  • the short-distance characteristics of the equipment and the D2D communication link can realize the effective utilization of spectrum resources; the direct communication method of D2D can adapt to the local data sharing requirements and provide flexible data services; D2D direct communication can utilize a large number of networks and A wide range of UEs to expand the coverage of the network.
  • FIG. 1 is a schematic diagram of a D2D scenario provided by an embodiment of the present application.
  • the user equipment can communicate with the base station via cellular signals; the user equipment can also communicate via the D2D signal.
  • the volunteer device is configured to acquire the second random access resource allocated by the second device, After receiving the access request sent by the user equipment, the first random access resource is selected from the obtained second random access resources, and is allocated to the user equipment to which the access request is sent.
  • the second device is configured to allocate the random access resource obtained by the original user equipment in the contention mode to the user equipment through the volunteer device, thereby avoiding the resource generated when the user equipment obtains the random access resource in a competitive manner when performing random access. Collision improves the success rate of random access of user equipment, thereby improving the utilization of random access resources.
  • FIG. 2 a schematic flowchart of a competitive random access method provided by an embodiment of the present application is shown.
  • the method specifically includes the following steps:
  • Step 201 After the first device determines to become a volunteer device, receiving an access request sent by the user equipment.
  • Step 202 The first device allocates a first random access resource to the user equipment according to the access request, so that the user equipment accesses the second device according to the first random access resource, where the A random access resource is a subset of the second random access resource allocated by the second device to the first device.
  • the first device can become a volunteer device by:
  • the first device receives the volunteer device recruitment message broadcasted by the second device; wherein the volunteer device recruitment message broadcasted by the second device is used to indicate that the first device that needs to be the volunteer device sends the volunteer device recruitment response message to the second device. Since the second device is not sure which first device can become the volunteer device, when the second device needs to allocate the random access resource through the volunteer device, the first device that needs to be the volunteer device can be indicated by the broadcast volunteer device recruitment message to the second device. The device sends a volunteer device recruitment message, thereby determining the second device that sends the volunteer device recruitment message as the volunteer device.
  • the second device may determine a volunteer device capable of allocating random access resources by sending a volunteer device recruitment message in order to reduce congestion.
  • the first device After determining that the device needs to be the volunteer device, the first device sends a volunteer device recruitment response message to the second device, where the recruitment response message is used to instruct the second device to determine the first device as the volunteer device. After receiving the volunteer device recruitment message, the first device may determine whether to send the volunteer device recruitment response message according to its actual situation. Optionally, the first device determines that it has D2D When the ability is available, the volunteer device recruitment response message is sent.
  • the second device may select multiple first devices as the volunteer device from the first device that sends the volunteer device recruitment response message according to actual conditions. The second device may also determine all of the first devices that send the volunteer device recruitment response message as volunteer devices.
  • the D2D-capable first device is determined as the volunteer device.
  • the second device may send an acknowledgement message to the first device, so that the first device determines that it has become a volunteer device.
  • the first device determines to become a volunteer device.
  • the second device After the second device receives the volunteer device recruitment response message sent by the first device, if it is determined that the first device can become a volunteer device, the second device may not send a confirmation message to the first device, but The first device allocates a second random access resource, so that the first device confirms that it is a volunteer device.
  • the first random access resource in the embodiment of the present application may be any one or more of the following combinations: a time domain resource, a frequency domain resource, and a code resource.
  • the second random access resource in the embodiment of the present application may be any one or more of the following combinations: a time domain resource; a frequency domain resource; a code resource.
  • the code resource is not included, and the first random access resource or the second random access resource may be a time domain resource and a frequency domain resource.
  • the first random access resource or the second random access resource may be a time domain resource and a preamble resource.
  • the first random access resource or the second random access resource may be: a time domain resource, a frequency domain resource, and a preamble resource.
  • the first device Before receiving the access request sent by the user equipment, the first device may also broadcast a volunteer device indication message, so that the user equipment determines, as the volunteer device, according to the volunteer device indication message.
  • the volunteer device indication message broadcasted by the first device may include information such as an identifier of the first device, and is used to indicate that the first device is a volunteer device.
  • the first device may broadcast the volunteer device indication message by using the D2D resource.
  • the first device may accept the access request sent by the user device.
  • the first device may receive the access request sent by the user equipment through the D2D broadcast channel.
  • the access request received by the first device is sent by the user equipment to the first device after determining that the random access needs to be initiated.
  • the access request received by the first device may be a message for the user equipment to initiate a random access, and the user equipment receives the random access response sent by the second device.
  • the access request received by the first device may also be a message for the user equipment to request the first random resource, and the user equipment may obtain the first random access resource allocated by the first device.
  • the first random access resource allocated by the first device to the user equipment is a subset of the second random access resource allocated by the second device to the first device.
  • the first device may receive the second random resource that is allocated by the second device, including one or more first random resources, and the first device selects one of the second random resources according to the access request sent by the user equipment. A random resource and assigned to the user device.
  • the first device may obtain the second random access resource allocated by the second device after receiving the access request by the user equipment after being determined by the second device as the volunteer device.
  • the second device may determine the number of allocated second random access resources of each first device according to the number of random access resources owned by the second device and the number of the first devices that are the volunteer devices. For example, the second device distributes 80% of the random access resources owned by itself to all the first devices determined to be volunteer devices.
  • the second device cannot determine whether all the second random access resources allocated to the first device are all allocated.
  • the first device may also need to send a random access resource allocation notification message to the second device.
  • the random access resource allocation notification message is used to indicate to the second device that the first device is the first random access resource allocated by the user equipment, so that the second device is configured according to the first device And transmitting, to the user equipment, a random access response to the first random access resource allocated by the user equipment.
  • the second random access resource allocated by the second device to the first device includes: a random access resource A, a random access resource B, and a random access resource C.
  • the first device After the first device allocates the random access resource A to the user equipment, the first device sends a random access resource allocation notification message to the second device to notify the second device that the random access resource A has been allocated.
  • the second device After receiving the random access resource allocation notification message, the second device may send a random access response corresponding to the random access resource A to the user equipment.
  • the first device may also send a random access resource allocation notification message to the second device, where the user equipment sends a random access request to the second device by using the first random access resource allocated by the first device by using the random access channel. , thereby initiating random access.
  • the user equipment After the first device allocates the first random access resource to the user equipment, the user equipment passes the time domain resource, the frequency domain resource, and the preamble in the first random access resource.
  • the code resource sends the random access request to the second device, thereby initiating random access.
  • the second device allocates the random access resource originally used for the contention to the user equipment by using the first device, thereby avoiding resource collision when the user equipment performs random access, thereby improving the utilization of the random access resource. rate.
  • the first device may also obtain the second random access resource allocated by the second device after receiving the access request by the user equipment. At this time, after receiving the user equipment to send the access request, the first device determines the number of the user equipment that sends the access request to the first device, and sends the number of the user equipment to the second device. And receiving, by the second device, a second random access resource allocated to the first device according to the number of the user equipment.
  • the first device may use the time point of receiving the access request as a time start point and wait for a preset time period; the first device determines that the preset is The number of user devices that send access requests within the time period, and then the determined user equipment The quantity is sent to the second device.
  • the first device may periodically determine the number of user equipments that send access requests to the first device in one cycle, and send the information to the second device.
  • the period can be determined according to the actual situation, which is not limited by the embodiment of the present application.
  • the first device obtains the second random access resource allocated by the second device after receiving the access request, the first device allocates the first random access to the user device according to the access request sent by the user device. After the resource, the random access resource allocation notification message may be sent to the second device, or the random access resource allocation notification message may not be sent to the second device.
  • the second random access resource allocated by the second device received by the first device is determined by the second device according to the number of user devices that send the access request to the first device, thereby being more effective.
  • the random access resource is used to reduce the probability of collision when the user equipment performs competitive random access, and improve the utilization rate of the random access channel.
  • the first device After the first device allocates the first random access resource to the user equipment according to the access request sent by the user equipment, the first device may also receive the user equipment, according to the first random access resource, used to initiate random access. Random access request. After receiving the random access request, the first device forwards the random access request to the second device. The first device may receive the random access request sent by the user equipment through the D2D broadcast channel.
  • the first device may periodically send the received random access request sent by the user equipment to the second device, so as to implement a random access request sent by the user equipment, which reduces resource overhead.
  • the user equipment can also send the random access request to the second device directly through the air interface.
  • the first device After the first device allocates the first random access resource to the user equipment according to the access request, or after the first device forwards the random access request sent by the user equipment to the second device, Receiving a random access response sent by the second device, the first device forwarding the random access response to the user equipment after receiving the random access response.
  • the first device may send the random access response sent by the second device to the user equipment by using the D2D broadcast channel, to prevent the user equipment from receiving the random access by using the poor cellular signal to transmit the random access response.
  • An error occurred in response to or receiving a random access response, thereby avoiding an access request being initiated
  • the user equipment re-initiates a new access or retransmission access request when it considers that the access fails, and these all use random access resources. Therefore, by using the foregoing method, the use of random access resources can be reduced, and the utilization rate of random access resources is improved.
  • the second device may also directly send the random access response to the user equipment through the air interface, and the first device does not receive the random access response sent by the second device.
  • the random access response sent by the second device may include a variety of information.
  • the random access response sent by the second device may include a temporary C-RNTI (Cell Radio Network Temporary Identity) allocated to the user equipment, and an uplink scheduling grant ( Up-Link grant), TA (Timing Advance, etc.).
  • C-RNTI Cell Radio Network Temporary Identity
  • Up-Link grant Up-Link grant
  • TA Timing Advance
  • the subsequent random access procedure may be continued according to the existing competitive random access manner.
  • the user equipment After receiving the random access response sent by the second device, the user equipment sends a connection establishment request to the second device, and completes the random connection after receiving the connection establishment response sent by the second device. Into the process. For other systems, we will not repeat them here.
  • FIG. 3 a schematic flowchart of a competitive random access method provided by an embodiment of the present application is shown.
  • the method specifically includes the following steps:
  • Step 301 The second device determines the first device as a volunteer device.
  • Step 302 The second device allocates a second random access resource to the first device, so that the first device allocates a first random access resource to a user equipment that sends an access request to the first device.
  • the first random access resource is a subset of the second random access resource.
  • the second device may determine the first device as the volunteer device in multiple implementation manners.
  • One possible implementation manner is as follows:
  • the second device sends a volunteer device recruitment message to the first device, where the volunteer device recruiting message is used to indicate that the first device that needs to be the volunteer device sends the volunteer device recruitment response message to the second device; the second device can send the volunteer device by means of broadcast Recruitment news.
  • the second device receives the volunteer device recruitment response message sent by the first device according to the volunteer device recruitment message, and the recruitment response message is used to instruct the second device to determine the first device as a volunteer device.
  • the second device may determine the first device as a volunteer device according to the volunteer device recruitment response message.
  • the second device may determine the first device that sends the volunteer device recruitment response message to the second device as the volunteer device, and may also determine a part of the device as the volunteer device, which is not limited in this embodiment of the present application.
  • the D2D-capable first device is determined as the volunteer device.
  • the second device may send a volunteer device recruitment message to detect the volunteer device when it detects congestion in the network.
  • the second device sends the volunteer device recruitment message, it is also unnecessary to consider whether the network is congested.
  • the first device may also broadcast the first device list, where the first device list indicates that the first device becomes the volunteer device.
  • the device so that the user equipment determines the first device as the volunteer device according to the first device list.
  • the first device list may include information such as the first device identifier.
  • the second device may further send a confirmation message to the first device that is the volunteer device, so that the first device confirms that the device has become Volunteer equipment.
  • the second random access resource may be directly allocated to the first device.
  • the first random access resource in the embodiment of the present application includes one or more of the following: a time domain resource, a frequency domain resource, and a code resource.
  • the second random access resource may be any combination of one or more of the following: a time domain resource; a frequency domain resource; a code resource.
  • the second device may also receive a random access resource allocation notification message sent by the first device, where the random access resource allocation notification message is used to indicate the A device is a first random access resource allocated by the user equipment.
  • the second device may determine, according to the received random access resource allocation notification message sent by the first device, the first random access resource allocated by the first device to the user equipment.
  • the first device may also not send a random access resource allocation notification message to the second device.
  • the second device may further determine the second random access resource allocated to the first device according to the number of user equipments that send the access request to the first device. Specifically, the second device receives the number of user equipments sent by the first device, and the second device determines, according to the number of the user equipments, a second random access resource that is allocated to the first device.
  • the second device may periodically receive the number of user equipments sent by the first device, and allocate the second random access resources to the first device according to the number of the user equipments.
  • the second device may also receive the random access resource allocation notification message sent by the first device.
  • the second device After the second device allocates the random access resource to the first device, the second device sends a random access response to the user equipment according to the first random access resource allocated by the first device for the user equipment.
  • the second device may send a random access response to the user equipment.
  • the first device generally sends a random access resource allocation notification message to the second device after the random resource is allocated to the user equipment.
  • the first device may determine the first random access resource that the first device has allocated to the user device, so the second device may be configured according to the device that has been allocated to the user device.
  • the first random access resource sends a random access response to the user equipment.
  • the user equipment is equivalent to initiating random access by using the sent access request.
  • the second device may further send a random access response to the user equipment after allocating the second random access resource to the first device according to the number of the user equipment.
  • the second device Since the second device is a random access resource allocated to the first device according to the number of the user equipment, the second device may determine that the first device has been allocated to the first random access resource of the user equipment, and thus may send the information to the user equipment. Random access response. At this time, the user equipment is equivalent to initiating random access by using the sent access request.
  • the second device may further send a random access response to the user equipment after receiving the random access request sent by the user equipment according to the random access resource allocated by the first device.
  • the second device may further receive, by the first device, a random access request for initiating a random access, where the random access request is sent by the user equipment according to the first random access resource.
  • the first device After receiving the random access request sent by the user equipment for initiating the random access, the first device forwards the random access request to the first device.
  • the user equipment uses the time domain resource and the frequency domain resource in the first random access resource.
  • the second device sends the preamble resource in the first random access resource, thereby initiating random access.
  • the subsequent random access process may be continued according to the existing competitive random access mode, and details are not described herein again.
  • the random access response sent by the second device may include temporary C-RNTI, Up-Link grant, TA, and the like allocated to the user equipment.
  • the specific content of the random access response sent by the second device may be referred to the provisions in the existing communication standard, and details are not described herein again.
  • the random access resource that is sent by the first device to the user equipment may be directly sent to the user equipment in the air interface, or may be sent according to the first
  • the device sends a random access response to the first device for the first random access resource allocated by the user equipment, so that the first device forwards the random access response to the user equipment.
  • the second device forwards the random access response to the user equipment by using the first device, and may prevent the second device from receiving the random access response by using the poor cellular signal, and the user equipment cannot receive the random access response or receive the random access.
  • An error occurs in response, so that the user equipment that has initiated the access request re-initiates a new access or retransmission access request when it considers that the access fails, and these all use random access resources. Therefore, by using the foregoing method, the use of random access resources can be reduced, and the utilization rate of random access resources is improved.
  • the following uses the user equipment side as an example to describe another competitive random connection provided by the embodiment of the present application. Into the method.
  • FIG. 4 a schematic flowchart of a competitive random access method provided by an embodiment of the present application is shown.
  • the method specifically includes the following steps:
  • Step 401 The user equipment determines the first device that is the volunteer device, and sends an access request to the first device.
  • Step 402 The user equipment receives the first random access resource that is allocated by the first device according to the access request, and accesses the second device according to the first random access resource, the random access resource. And assigning, to the second device, a subset of the second random access resources of the first device.
  • the user equipment may determine the first device as the volunteer device by any one of the following methods:
  • Manner 1 The user equipment listens to the volunteer device indication message broadcast by the first device, and determines the first device that becomes the volunteer device according to the volunteer device indication message.
  • Manner 2 The user equipment listens to the first device list broadcast by the second device, and determines the first device that becomes the volunteer device in the first device list.
  • the first device list may include information such as an identifier of the first device.
  • the user equipment may determine, according to the first device list, a first device with a strong signal strength and a small load in the first device list, and send an access request to the first device.
  • the user equipment may send a random access request to the second device according to the first access random resource, thereby initiating random access. And receiving a random access response sent by the second device after initiating the random access.
  • the user equipment may also not send the random access request message, and receive the random access response sent by the second device after receiving the first random access resource allocated by the first device.
  • the user equipment after receiving the first random access resource allocated by the first device, uses the time domain resource and the frequency domain resource in the first random access resource to perform the random access.
  • the preamble resource in the resource is sent to the second device to initiate random access.
  • the user equipment may not need to send the preamble resource, and the user equipment may initiate random access by using the access request sent to the first device in step 401.
  • the first random access resource in the embodiment of the present application may include one or more of the following: a time domain resource, a frequency domain resource, and a code resource.
  • the second random access resource may include one or more of the following: a time domain resource; a frequency domain resource; a code resource.
  • the user equipment may receive, by the second device, a random access response to the user equipment directly on the air interface according to the first random access resource allocated by the first device to the user equipment.
  • the user equipment may also receive the random access response sent by the first device, where the random access response is that the second device passes the first random access resource allocated by the first device to the user equipment. Forwarding by the first device to the user equipment.
  • the user equipment receives the random access response sent by the first device by using a D2D broadcast channel.
  • the second device forwards the random access response to the user equipment by using the first device, and may prevent the second device from receiving the random access response by using the poor cellular signal, and the user equipment cannot receive the random access response or receive the random access.
  • An error occurs in response, so that the user equipment that has initiated the access request re-initiates a new access or retransmission access request when it considers that the access fails, and these all use random access resources. Therefore, by the above method, the use of random access resources can be reduced, and the capacity of the random access channel can be improved.
  • the user equipment may receive a variety of information in the random access response sent by the second device.
  • information in the random access response sent by the second device.
  • the user equipment receives the index of the preamble resource allocated to the user equipment, the temporary C-RNTI, the Up-Link grant, the TA, and the like in the random access response sent by the second device. . If the user equipment determines that the index of the preamble resource in the received random access response is the same as the index used when transmitting the preamble resource, the user equipment considers that the corresponding random access response is successfully received.
  • TA is used to specify the amount of time adjustment required for uplink synchronization of user equipment.
  • the Up-Link grant specifies the uplink time-frequency resource used by the user equipment to send subsequent connection request messages (such as RRC Connection Request).
  • connection request message After the user equipment sends the connection request message to the second device, it also receives a connection request response message (such as RRC Connection Setup) sent by the second device, and the user equipment completes the random connection.
  • a connection request response message such as RRC Connection Setup
  • connection request message sent by the user equipment to the second device, and the parameter carried in the connection request response message sent by the second device, and the manner of sending may refer to the provisions in the existing competitive random access, and Let me repeat.
  • FIG. 5 is a schematic diagram of a competitive random access procedure provided by an embodiment of the present application.
  • the first device, the second device, and the user equipment are included in FIG. 5.
  • the process specifically includes the following steps:
  • Step 501 The second device broadcasts a volunteer device recruitment message.
  • Step 502 The first device applies to become a volunteer device, and sends a volunteer device recruitment response message to the second device.
  • Step 503 The second device determines that the first device becomes a volunteer device, and allocates a second random access resource to the first device.
  • the second random access resource includes one or more of a time domain resource, a frequency domain resource, and a code resource.
  • step 504 after the second device determines the first device as the volunteer device, the first device list is broadcasted.
  • the first device identifier broadcasted by the second device may include information such as the first device identifier.
  • Step 505 The first device broadcasts the volunteer device indication message, so that the user equipment determines the first device as the volunteer device according to the volunteer device indication message.
  • Step 506 The user equipment sends an access request to the first device.
  • the user equipment sends an access request to the first device after determining that the first device is a volunteer device.
  • Step 507 The first device allocates a first random access resource to the user equipment.
  • Step 508 The user equipment sends a random access request to the second device according to the first random access resource allocated by the first device, thereby initiating a random access procedure.
  • the random access request sent by a user equipment includes a preamble resource.
  • Step 509 The second device sends a random access response to the user equipment.
  • the random access response sent by the second device may include an index of a preamble resource allocated to the user equipment, a temporary C-RNTI, an Up-Link grant, a TA, and the like.
  • Step 510 The user equipment sends a connection request message to the second device.
  • Step 511 The second device sends a connection request response message to the user equipment.
  • FIG. 6 is a schematic diagram of a competitive random access procedure provided by an embodiment of the present application.
  • FIG. 6 includes a second device, a first device, and a user device 1 and a user device 2.
  • the process specifically includes the following steps:
  • Step 601 The second device broadcasts the volunteer device recruitment message.
  • Step 602 The first device applies to become a volunteer device, and sends a volunteer device recruitment response message to the second device.
  • Step 603 The second device determines that the first device becomes a volunteer device, and allocates a second random access resource to the first device.
  • the second random access resource allocated by the second device to the first device includes: a random access resource A, a random access resource B, and a random access resource C.
  • step 604 after the second device determines the first device as the volunteer device, the first device list is broadcasted.
  • the first device identifier broadcasted by the second device may include information such as the first device identifier.
  • Step 605 The first device broadcasts the volunteer device indication message, so that the user equipment determines the first device as the volunteer device according to the volunteer device indication message.
  • Step 606a The user equipment 1 sends an access request to the first device, thereby initiating random access.
  • Step 606b The user equipment 2 sends an access request to the first device, thereby initiating random access.
  • the user equipment 1 and the user equipment 2 send an access request to the first device after determining that the first device is a volunteer device.
  • Step 607 The first device allocates the first random access resource to the user equipment 1 and the user equipment 2, respectively.
  • the first device allocates the random access resource A to the user equipment 1 and the random access resource B to the user equipment 2.
  • Step 608 The first device sends a random access resource allocation notification message to the second device, to notify the second device of the random access resource allocation.
  • the first device sending a random access resource allocation notification message to the second device may indicate that the random access resource A and the random access resource B have been allocated, and the random access resource C is not allocated.
  • Step 609 The second device sends a random access response to the user equipment that has allocated the first random access resource according to the allocated first random access resource.
  • the second device sends a random access response according to the allocated random access resource A, and the user equipment 1 receives the message and considers that it responds to itself, and the second device also sends the random access according to the allocated random access resource B.
  • User Device 2 will receive this message and will consider responding to itself.
  • the random access response sent by the second device to the user equipment 1 may include an index of the preamble resource 1 allocated to the user equipment 1, a temporary C-RNTI 1, and an Up-Link grant 1 , TA 1 and other information.
  • the user equipment 1 determines the response to itself based on the index of the preamble resource 1.
  • the random access response sent by the second device to the user equipment 2 may include an index of the preamble resource 2 allocated to the user equipment 2, a temporary C-RNTI 2, an Up-Link grant 2, a TA 2, and the like.
  • the user equipment 2 determines the response to itself based on the index of the preamble resource 2.
  • Step 610a The user equipment 1 sends a connection request message to the second device.
  • Step 610b The user equipment 2 sends a connection request message to the second device.
  • Step 611 The second device sends a connection request response message to the user equipment 1 and the user equipment 2, respectively.
  • FIG. 7 is a schematic diagram of a competitive random access procedure provided by an embodiment of the present application.
  • FIG. 7 includes a second device, a first device, and a user device 1 and a user device 2.
  • the process specifically includes the following steps:
  • Step 701 The second device broadcasts the volunteer device recruitment message.
  • Step 702 The first device applies to become a volunteer device, and sends a volunteer device recruitment response message to the second device.
  • Step 703 The second device confirms that the first device becomes a volunteer device, and sends a volunteer device confirmation message to the first device.
  • Step 704 After the second device determines the first device as the volunteer device, the first device list is broadcasted.
  • the first device identifier broadcasted by the second device may include information such as the first device identifier.
  • the first device broadcasts the volunteer device indication message, so that the user device determines the first device as the volunteer device according to the volunteer device indication message.
  • Step 706a The user equipment 1 sends an access request to the first device, thereby initiating random access.
  • Step 706b The user equipment 2 sends an access request to the first device, thereby initiating random access.
  • the user equipment 1 and the user equipment 2 send an access request to the first device after determining that the first device is a volunteer device.
  • Step 707 The first device determines the number of user equipments that send the access request to the first device, and sends the number of the user equipment to the second device.
  • the first device may periodically send the determined number of user equipments to the second device.
  • Step 708 The second device allocates a second random access resource to the first device according to the number of the user equipment.
  • the second random access resource allocated by the second device to the first device includes: a random access resource A and a random access resource B.
  • Step 709 The first device allocates the first random access resource to all user equipments to which the access request is sent.
  • the first device allocates the random access resource A to the user equipment 1 and the random access resource B to the user equipment 2.
  • the first device sends a random access resource allocation notification message to the second device, to notify the second device that the random access resource A and the random access resource B have been allocated.
  • Step 711 The second device sends a random connection to the user equipment that has allocated the first random access resource. In response.
  • the random access response sent by the second device to the user equipment 1 may include an index of the preamble resource 1 allocated to the user equipment 1, a temporary C-RNTI 1, and an Up-Link grant 1 , TA 1 and other information.
  • the user equipment 1 determines, according to the index of the preamble resource 1, the random access response sent by the second device as a response to itself.
  • the random access response sent by the second device to the user equipment 2 may include an index of the preamble resource 2 allocated to the user equipment 2, a temporary C-RNTI 2, an Up-Link grant 2, a TA 2, and the like.
  • the user equipment 2 determines, according to the index of the preamble resource 2, the random access response sent by the second device as a response to itself.
  • Step 712a The user equipment 1 sends a connection request message to the second device.
  • Step 712b The user equipment 2 sends a connection request message to the second device.
  • Step 713 The second device sends a connection request response message to the user equipment 1 and the user equipment 2, respectively.
  • FIG. 8 is a schematic diagram of a competitive random access procedure provided by an embodiment of the present application.
  • FIG. 8 includes a second device, a first device, and a user device 1 and a user device 2.
  • the process specifically includes the following steps:
  • Step 801 The second device broadcasts a volunteer device recruitment message.
  • Step 802 The first device applies to become a volunteer device, and sends a volunteer device recruitment response message to the second device.
  • Step 803 The second device determines that the first device becomes a volunteer device, and allocates a second random access resource to the first device.
  • the second random access resource allocated by the second device to the first device is: random access resource A, random access resource B, and random access resource C.
  • step 804 after the second device determines the first device that is the volunteer device, the first device list is broadcasted.
  • the first device identifier broadcasted by the second device may include information such as the first device identifier.
  • Step 805 The first device broadcasts a volunteer device indication message, so that the user equipment according to the volunteer The device indication message determines the first device that is the volunteer device.
  • Step 806a The user equipment 1 sends an access request to the first device.
  • Step 806b User equipment 2 sends an access request to the first device.
  • the user equipment 1 and the user equipment 2 send an access request to the first device after determining that the first device is a volunteer device.
  • Step 807 The first device allocates a first random access resource to the user equipment to which the access request is sent.
  • the first device allocates the random access resource A to the user equipment 1 and the random access resource B to the user equipment 2.
  • step 808a the user equipment 1 sends a random access request to the second device according to the first random access resource allocated by the first device, thereby initiating random access.
  • step 808b the user equipment 2 sends a random access request to the second device according to the first random access resource allocated by the first device, thereby initiating random access.
  • the first random access request includes a preamble resource.
  • Step 809 The first device sends a random access resource allocation notification message to the second device, to notify the second random access resource that the second device has allocated.
  • the first device notifies the second device that the random access resource A and the random access resource B have been allocated by sending a random access resource allocation notification message.
  • step 810 if the first device receives the random access request in steps 808ba and/or 808b, the first device forwards the received random access request to the second device.
  • Step 811 The second device sends a random access response that needs to be sent to the user equipment 1 and the user equipment 2 to the first device.
  • the random access response sent by the second device to the user equipment 1 may include an index of the preamble resource 1 allocated to the user equipment 1, a temporary C-RNTI 1, and an Up-Link grant 1 , TA 1 and other information.
  • the random access response sent by the second device to the user equipment 2 may include an index of the preamble resource 2 allocated to the user equipment 2, a temporary C-RNTI 2, an Up-Link grant 2, a TA 2, and the like.
  • Step 812a The first device forwards the random access response sent by the second device to the user equipment 1 to the user equipment 1.
  • Step 812b The first device forwards the random access response sent by the second device to the user equipment 2 to the user equipment 2.
  • Step 813a The user equipment 1 sends a connection request message to the second device.
  • Step 813b The user equipment 2 sends a connection request message to the second device.
  • Step 814 The second device sends a connection request response message to the user equipment 1 and the user equipment 2, respectively.
  • FIG. 9 is a schematic diagram of a competitive random access procedure provided by an embodiment of the present application.
  • FIG. 9 includes a second device, a first device, and a user device 1 and a user device 2.
  • the process specifically includes the following steps:
  • Step 901 The second device broadcasts a volunteer device recruitment message.
  • Step 902 The first device applies to become a volunteer device, and sends a volunteer device recruitment response message to the second device.
  • Step 903 The second device determines that the first device becomes a volunteer device, and allocates a second random access resource to the first device.
  • the second random access resource allocated by the second device to the first device includes: a random access resource A, a random access resource B, and a random access resource C.
  • step 904 the second device broadcasts the first device list.
  • the first device identifier broadcasted by the second device may include information such as the first device identifier.
  • Step 905 The first device broadcasts the volunteer device indication message, so that the user equipment determines the first device as the volunteer device according to the volunteer device indication message.
  • Step 906a The user equipment 1 sends an access request to the first device.
  • Step 906b User equipment 2 sends an access request to the first device.
  • the user equipment 1 and the user equipment 2 send an access request to the first device after determining that the first device is a volunteer device.
  • Step 907 The first device allocates the first random connection to the user equipment to which the access request is sent, respectively. Into the resource.
  • the first device allocates the random access resource A to the user equipment 1 and the random access resource B to the user equipment 2.
  • Step 908a The user equipment 1 sends a random access request to the first device according to the first random access resource allocated by the first device, thereby initiating random access.
  • Step 908b The user equipment 2 sends a random access request to the first device according to the first random access resource allocated by the first device, thereby initiating random access.
  • Step 909 The first device forwards the received random access request sent by the user equipment 1 and the user equipment 2 to the second device.
  • Step 910 The second device sends a random access response sent to the user equipment 1 and the user equipment 2 to the first device.
  • Step 911a The first device forwards the random access response sent by the second device to the user equipment 1 to the user equipment 1.
  • Step 911b The first device forwards the random access response sent by the second device to the user equipment 2 to the user equipment 2.
  • Step 912a The user equipment 1 sends a connection request message to the second device.
  • Step 912b The user equipment 2 sends a connection request message to the second device.
  • Step 913 The second device sends a connection request response message to the user equipment 1 and the user equipment 2, respectively.
  • FIG. 10 it is a schematic diagram of a competitive random access procedure provided by an embodiment of the present application.
  • FIG. 10 includes a second device, a first device, and a user device 1 and a user device 2.
  • the process specifically includes the following steps:
  • Step 1001 The second device broadcasts a volunteer device recruitment message.
  • Step 1002 The first device applies to become a volunteer device, and sends a volunteer device recruitment response message to the second device.
  • Step 1003 After the second device determines the first device as the volunteer device, the first device list is broadcasted.
  • the first device identifier broadcasted by the second device may include information such as the first device identifier.
  • the first device broadcasts the volunteer device indication message, so that the user device determines the first device as the volunteer device according to the volunteer device indication message.
  • Step 1005a The user equipment 1 sends an access request to the first device, thereby initiating random access.
  • Step 1005b User equipment 2 sends an access request to the first device, thereby initiating random access.
  • the user equipment 1 and the user equipment 2 send an access request to the first device after determining that the first device is a volunteer device.
  • Step 1006 The first device determines the number of user equipments that send an access request to the first device, and sends the number of the user equipment to the second device.
  • the first device may periodically send the determined number of user equipments to the second device.
  • Step 1007 The second device allocates a second random access resource to the first device according to the number of the user equipment.
  • the second random access resource allocated by the second device to the first device includes: a random access resource A, a random access resource B, where the random access resource A includes a preamble resource 1 and a time-frequency resource 1
  • the random access resource B includes a preamble resource 2 and a time-frequency resource 2.
  • Step 1008 The first device allocates the first random access resource to the user equipment 1 and the user equipment 2, respectively.
  • the first device allocates the random access resource A to the user equipment 1 and the random access resource B to the user equipment 2.
  • Step 1009 The second device sends a random access response that needs to be sent to the user equipment 1 and the user equipment 2 to the first device.
  • the random access response sent by the second device to the user equipment 1 may include an index of the preamble resource 1 allocated to the user equipment 1, a temporary C-RNTI 1, and an Up-Link grant 1 , TA 1 and other information.
  • the random access response sent by the second device to the user equipment 2 may include an index of the preamble resource 2 allocated to the user equipment 2, a temporary C-RNTI 2, an Up-Link grant 2, a TA 2, and the like.
  • Step 1010a The first device sends the second device to the user equipment 1 for random access response forwarding. To the user equipment 1.
  • Step 1010b The first device forwards the random access response sent by the second device to the user equipment 2 to the user equipment 2.
  • Step 1011a The user equipment 1 sends a connection request message to the second device.
  • Step 1011b The user equipment 2 sends a connection request message to the second device.
  • Step 1012 The second device sends a connection request response message to the user equipment 1 and the user equipment 2, respectively.
  • the embodiment of the present application further provides a competitive random access device, and the specific content of the device may be implemented by referring to the foregoing method, and details are not described herein again.
  • the embodiment of the present application provides a schematic structural diagram of a competitive random access device.
  • the apparatus can be used to perform the method illustrated in FIG.
  • the apparatus includes:
  • the transceiver unit 1101 is configured to: after receiving the volunteer device, receive an access request sent by the user equipment;
  • the allocating unit 1102 is configured to allocate a first random access resource to the user equipment according to the access request, so that the user equipment accesses the second device according to the first random access resource, where the first random The access resource is a subset of the second random access resource allocated by the second device to the first device.
  • the transceiver unit 1101 is specifically configured to:
  • the transceiver unit 1101 is specifically configured to:
  • the transceiver unit 1101 is further configured to:
  • Broadcasting the volunteer device indication message so that the user equipment determines the first device that becomes the volunteer device according to the volunteer device indication message.
  • the transceiver unit 1101 is further configured to:
  • the transceiver unit 1101 is further configured to:
  • the second device sends a random access response to the user equipment according to the first random access resource allocated by the first device to the user equipment.
  • the transceiver unit 1101 is further configured to:
  • the transceiver unit 1101 is further configured to:
  • the first device receives a random access response sent by the second device, and forwards the random access response to the user equipment.
  • the first random access resource includes one or more of the following:
  • Time domain resource frequency domain resource; code resource;
  • the second random access resource includes one or more of the following:
  • Time domain resources frequency domain resources; code resources.
  • the embodiment of the present application provides a schematic structural diagram of a competitive random access device.
  • the apparatus can be used to perform the method illustrated in FIG.
  • the apparatus includes:
  • a determining unit 1201, configured to determine the first device as a volunteer device
  • the allocating unit 1202 is configured to allocate the second random access resource to the first device, so that the first device allocates the first random access resource to the user equipment that sends the access request to the first device. And the first random access resource is a subset of the second random access resource.
  • the device further includes a transceiver unit 1203, where the transceiver unit 1203 is specifically configured to:
  • the device further includes a transceiver unit 1203, where the transceiver unit 1203 is specifically configured to:
  • the device further includes a transceiver unit 1203, where the transceiver unit 1203 is specifically configured to:
  • the first device list indicating the first device that becomes the volunteer device, so that the user device determines the first device as the volunteer device according to the first device list.
  • the device further includes a transceiver unit 1203:
  • the transceiver unit 1203 is configured to receive the number of user equipments sent by the first device;
  • the allocating unit 1202 is configured to determine, according to the quantity of the user equipment, a second random access resource allocated to the first device.
  • the device further includes a transceiver unit 1203:
  • the transceiver unit 1203 is configured to receive a random access request that is sent by the user equipment according to the first random access resource to initiate random access;
  • the transceiver unit 1203 is configured to receive a random access request that is sent by the first device to initiate a random access, where the random access request is sent by the user equipment according to the first random access resource.
  • the first device is configured to receive a random access request that is sent by the first device to initiate a random access, where the random access request is sent by the user equipment according to the first random access resource. The first device.
  • the device further includes a transceiver unit 1203, where the transceiver unit 1203 is specifically configured to:
  • the transceiver unit 1203 is specifically configured to:
  • the second device sends a random access response to the first device according to the first random access resource allocated by the first device to the user equipment, so that the first device sends the random access response Forwarded to the user equipment;
  • the second device directly sends a random access response to the user equipment in an air interface according to the first random access resource allocated by the first device to the user equipment.
  • the embodiment of the present application provides a schematic structural diagram of a competitive random access device.
  • the apparatus can be used to perform the method illustrated in FIG.
  • the apparatus includes:
  • a determining unit 1301, configured to determine a first device that becomes a volunteer device
  • the transceiver unit 1302 is configured to send an access request to the first device, receive a first random access resource that is allocated by the first device according to the access request, and access according to the first random access resource.
  • the second device, the first random access resource is a subset of the second random access resource allocated by the second device to the first device.
  • the determining unit 1301 is specifically configured to:
  • the transceiver unit 1302 is specifically configured to:
  • the transceiver unit 1302 is specifically configured to:
  • the transceiver unit 1302 is further configured to:
  • the embodiment of the present application provides a schematic structural diagram of a competitive random access device.
  • the apparatus can be used to perform the method illustrated in FIG.
  • the apparatus includes a processor 1401 and a transceiver 1402.
  • the transceiver 1402 can be a wired transceiver, a wireless transceiver, or a combination thereof.
  • the wired transceiver can be, for example, an Ethernet interface.
  • the Ethernet interface can be an optical interface, an electrical interface, or a combination thereof.
  • the wireless transceiver can be, for example, a wireless local area network transceiver, a cellular network transceiver, or a combination thereof.
  • the processor 1401 may be a central processing unit (English: central processing unit, abbreviated: CPU), a network processor (English: network processor, abbreviated: NP) or a combination of a CPU and an NP.
  • the processor 1401 may further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (abbreviated as PLD), or a combination thereof.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the above PLD can be a complex programmable logic device (English: complex programmable logic device, abbreviation: CPLD), field-programmable gate array (English: field-programmable gate array, abbreviation: FPGA), general array logic (English: generic array Logic, abbreviation: GAL) or any combination thereof.
  • the transceiver 1402 is configured to be a volunteer device; and receive an access request sent by the user equipment;
  • the processor 1401 is configured to allocate a first random access resource to the user equipment according to the access request, so that the user equipment accesses the second device according to the first random access resource, where the first random The access resource is a subset of the second random access resource allocated by the second device to the first device.
  • the transceiver 1402 is specifically configured to:
  • the transceiver 1402 is specifically configured to:
  • the transceiver 1402 is further configured to:
  • Broadcasting the volunteer device indication message so that the user equipment determines the first device that becomes the volunteer device according to the volunteer device indication message.
  • the processor 1401 is configured to determine a quantity of user equipment that sends an access request to the first device.
  • the transceiver 1402 is configured to send the number of the user equipment to the second device, and receive a second random access resource that is allocated by the second device to the first device according to the quantity of the user equipment. .
  • the transceiver 1402 is further configured to:
  • the second device sends a random access response to the user equipment according to the first random access resource allocated by the first device to the user equipment.
  • the transceiver 1402 is further configured to:
  • the transceiver 1402 is further configured to:
  • the first random access resource includes one or more of the following:
  • Time domain resource frequency domain resource; code resource;
  • the second random access resource includes one or more of the following:
  • Time domain resources frequency domain resources; code resources.
  • the embodiment of the present application provides a schematic structural diagram of a competitive random access device.
  • the apparatus can be used to perform the method illustrated in FIG.
  • the apparatus includes a processor 1501 and a transceiver 1502.
  • the transceiver 1502 can be a wired transceiver, a wireless transceiver, or a combination thereof.
  • the wired transceiver can be, for example, an Ethernet interface.
  • the Ethernet interface can be an optical interface, an electrical interface, or a combination thereof.
  • the wireless transceiver can be, for example, a wireless local area network transceiver, a cellular network transceiver, or a combination thereof.
  • the processor 1501 may be a CPU, an NP or a combination of a CPU and an NP.
  • the processor 1501 may further include a hardware chip.
  • the hardware chip described above may be an application specific integrated circuit ASIC, a PLD, or a combination thereof.
  • the above PLD may be a CPLD, an FPGA, a GAL, or any combination thereof.
  • the processor 1501 is configured to determine the first device as a volunteer device
  • the transceiver 1502 is configured to allocate a second random access resource to the first device, so that the first device allocates a first random access resource to a user equipment that sends an access request to the first device, where The first random access resource is a subset of the second random access resource.
  • the transceiver 1502 is specifically configured to:
  • the processor 1501 is configured to determine the first device as a volunteer device according to the volunteer device recruitment response message.
  • the transceiver 1502 is specifically configured to:
  • the transceiver 1502 is specifically configured to:
  • the first device list indicating the first device that becomes the volunteer device, so that the user device determines the first device as the volunteer device according to the first device list.
  • the transceiver 1502 is specifically configured to:
  • the processor 1501 is configured to determine, according to the quantity of the user equipment, a second random access resource allocated to the first device.
  • the transceiver 1502 is specifically configured to:
  • the transceiver 1502 is specifically configured to receive, by using the first device, a random access request for initiating a random access, where the random access request is sent by the user equipment according to the first random access resource. To the first device.
  • the transceiver 1502 is specifically configured to:
  • the transceiver 1502 is specifically configured to:
  • the embodiment of the present application provides a schematic structural diagram of a competitive random access device.
  • the apparatus can be used to perform the method illustrated in FIG.
  • the apparatus includes a processor 1601 and a transceiver 1602.
  • the transceiver 1602 can be a wired transceiver, a wireless transceiver, or a combination thereof.
  • the wired transceiver can be, for example, an Ethernet interface.
  • the Ethernet interface can be an optical interface, an electrical interface, or a combination thereof.
  • the wireless transceiver can be, for example, a wireless local area network transceiver, a cellular network transceiver, or a combination thereof.
  • the processor 1601 may be a CPU, an NP or a combination of a CPU and an NP.
  • the processor 1601 may further include a hardware chip.
  • the hardware chip described above may be an application specific integrated circuit ASIC, a PLD, or a combination thereof.
  • the above PLD may be a CPLD, an FPGA, a GAL, or any combination thereof.
  • a processor 1601 configured to determine a first device that becomes a volunteer device
  • the transceiver 1602 is configured to send an access request to the first device, receive a first random access resource that is allocated by the first device according to the access request, and access according to the first random access resource.
  • the second device, the first random access resource is a subset of the second random access resource allocated by the second device to the first device.
  • the transceiver 1602 is configured to: listen to a volunteer device indication message broadcast by the first device;
  • the processor 1601 is configured to determine, according to the volunteer device indication message, the first device that becomes a volunteer device.
  • the transceiver 1602 is specifically configured to:
  • the transceiver 1602 is specifically configured to:
  • the transceiver 1602 is specifically configured to:
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer usable memory channels (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG.
  • the computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine instruction for generating instructions executed by a processor of a computer or other programmable data processing device Means for implementing the functions specified in one or more flows of the flowchart or in a block or blocks of the flowchart.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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

Abstract

L'invention concerne un procédé et un appareil d'accès aléatoire compétitif. Le procédé comprend les opérations suivantes : un premier dispositif reçoit une requête d'accès envoyée par un équipement utilisateur après avoir été déterminé comme servant de dispositif volontaire ; et le premier dispositif attribue une première ressource d'accès aléatoire à l'équipement utilisateur selon la requête d'accès, de telle sorte que l'équipement utilisateur accède à un second dispositif selon la première ressource d'accès aléatoire, la première ressource d'accès aléatoire étant un sous-ensemble d'une seconde ressource d'accès aléatoire attribuée au premier dispositif par le second dispositif.
PCT/CN2015/095571 2015-11-25 2015-11-25 Procédé et appareil d'accès aléatoire compétitif Ceased WO2017088133A1 (fr)

Priority Applications (1)

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PCT/CN2015/095571 WO2017088133A1 (fr) 2015-11-25 2015-11-25 Procédé et appareil d'accès aléatoire compétitif

Applications Claiming Priority (1)

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PCT/CN2015/095571 WO2017088133A1 (fr) 2015-11-25 2015-11-25 Procédé et appareil d'accès aléatoire compétitif

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CN112118629A (zh) * 2019-06-20 2020-12-22 中国电信股份有限公司 随机接入方法及随机接入系统

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CN104703224A (zh) * 2015-04-09 2015-06-10 宇龙计算机通信科技(深圳)有限公司 用于d2d通信的资源配置方法、装置和终端
WO2015119538A1 (fr) * 2014-02-04 2015-08-13 Telefonaktiebolaget L M Ericsson (Publ) Procédés, dispositif sans fil, station de base et station relais candidate pour supporter la communication d2d sur relais
CN104954976A (zh) * 2015-06-30 2015-09-30 宇龙计算机通信科技(深圳)有限公司 一种资源调度方法、终端、基站及系统

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CN101365220A (zh) * 2007-08-10 2009-02-11 上海无线通信研究中心 协作蜂窝网络中基于用户端合作分组的随机接入方法
WO2015119538A1 (fr) * 2014-02-04 2015-08-13 Telefonaktiebolaget L M Ericsson (Publ) Procédés, dispositif sans fil, station de base et station relais candidate pour supporter la communication d2d sur relais
CN104703224A (zh) * 2015-04-09 2015-06-10 宇龙计算机通信科技(深圳)有限公司 用于d2d通信的资源配置方法、装置和终端
CN104954976A (zh) * 2015-06-30 2015-09-30 宇龙计算机通信科技(深圳)有限公司 一种资源调度方法、终端、基站及系统

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CN112118629A (zh) * 2019-06-20 2020-12-22 中国电信股份有限公司 随机接入方法及随机接入系统

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