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WO2015042822A1 - Procédé de répartition de ressources de découverte de voisins - Google Patents

Procédé de répartition de ressources de découverte de voisins Download PDF

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Publication number
WO2015042822A1
WO2015042822A1 PCT/CN2013/084297 CN2013084297W WO2015042822A1 WO 2015042822 A1 WO2015042822 A1 WO 2015042822A1 CN 2013084297 W CN2013084297 W CN 2013084297W WO 2015042822 A1 WO2015042822 A1 WO 2015042822A1
Authority
WO
WIPO (PCT)
Prior art keywords
discovery
user equipment
type
resources
base station
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/CN2013/084297
Other languages
English (en)
Chinese (zh)
Inventor
韩锋
孟艳
蒋琦
刘铮
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.)
Nokia Shanghai Bell Co Ltd
Original Assignee
Alcatel Lucent Shanghai Bell 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 Alcatel Lucent Shanghai Bell Co Ltd filed Critical Alcatel Lucent Shanghai Bell Co Ltd
Priority to PCT/CN2013/084297 priority Critical patent/WO2015042822A1/fr
Priority to CN201380079433.4A priority patent/CN105519194B/zh
Publication of WO2015042822A1 publication Critical patent/WO2015042822A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

Definitions

  • the present invention relates to the field of wireless communications, and more particularly to a method for allocating neighbor discovery resources.
  • D2D Device-to-device
  • 3GPP SA 3GPP SA
  • RAN Radio Access Network
  • Type 1 The discovery process allocates resources for discovery signal transmission based on non-user equipment specific, wherein these resources can be used for all user equipments or a group of user equipment;
  • Type 2 The discovery process allocates resources for discovery signal transmission based on user equipment specificity, where:
  • Type 2A Resources are dynamically allocated to each dedicated neighbor discovery signal transmission instance
  • Type 2B Resources are allocated semi-persistently to each dedicated neighbor discovery signal instance.
  • Type 1 is a competition-based solution
  • the discovery of type 2 is a non-contention-based solution.
  • the above two types of discovery processes have their own advantages, but also have their shortcomings.
  • Table 1 shows some of the results of the above two types of analysis: Table 1: Type 1 Type 2 Advantages and Disadvantages Type 1 Type 2 Advantages Simple, Low Overhead, Low Conflict, Compact Network Application to Hibernate User Control Devices Disadvantages High Conflict Possibilities, High Overhead, Unavailable Energy Consumption, No Network control for user devices that are accurate to sleep
  • a network for neighbor discovery will support both type 1 (non-user device specific) discovery and type 2 (user device specific) discovery.
  • the base station is capable of semi-statically allocating Type 1 and Type 2 discovery resources based on network conditions such as discovery load conditions, user equipment characteristics, discovery of collision conditions, and the like.
  • the base station should broadcast the type 1 resource to all user equipments by means of its system broadcast information, and the user equipment-specific type 2 resources are transmitted to the specific user equipment according to the user neighbor discovery requirements.
  • Resources discovered by neighbors assigned to Type 1 and Type 2 can be configured in TDM or FDM or federated TDM/FDM.
  • the user equipment can autonomously transmit the discovery signal based on carrier sensing or based on predefined rules, and specific predefined rules based on the user equipment identity and neighbor discovery subframes will be given in subsequent embodiments.
  • a time hopping scheme based on user equipment identification will be introduced into the discovery period, and some hash function is needed to determine when the user equipment should transmit its discovery signal.
  • the base station can explicitly allocate the discovery resource to each D2D user equipment.
  • the base station can determine which user equipment can use which type of discovery resource.
  • user equipment-specific and non-competitive type 2 resources can be applied to user equipment in a connected state, such as user equipment with high collision probability, high subscription priority, and the like.
  • User equipment such as a dormant state and a connected state user device having a low collision probability, a low subscription priority, etc., can apply a content type 1 based resource.
  • user equipments with different priority levels are allowed to transmit their discovery signals with different transmission opportunities in one discovery cycle. For example, a user equipment with a high subscription priority is allowed to transmit its discovery signal multiple times with a high transmission opportunity in one discovery cycle. This will increase the likelihood of discovery of these user devices for other surrounding user devices and increase potential D2D communication opportunities. Conversely, a user equipment with a low subscription priority is allowed to transmit only its discovery signal once in a single discovery cycle. This will result in more discovery flexibility for the network and a good user experience for the user.
  • the first aspect of the present invention provides a method for allocating neighbor discovery resources in a base station in a wireless communication system, characterized in that a network formed by the base station supporting neighbor discovery simultaneously supports user equipment based A non-dedicated first type of discovery mechanism and a second type of discovery mechanism based on user equipment.
  • the base station semi-statically allocates resources for the first type of neighbor discovery and resources for the second type of neighbor discovery according to network conditions.
  • the network condition comprises at least one of the following: - discover signal load conditions;
  • the base station broadcasts a first type of resource to all user equipments by means of system broadcast information.
  • the base station sends a second type of resource to a specific user equipment according to a neighbor discovery requirement of a specific user equipment.
  • the base station configures resources allocated to the first type and the second type of discovery in a TDM or FDM or a combined TDM/FDM manner.
  • the base station applies a time hopping scheme determined based on the user equipment identity or based on the neighbor discovery subframe during the discovery period and the discovery week.
  • the time hopping scheme includes:
  • ⁇ - 1 ) 11, (i 1).
  • ⁇ - / ⁇ modLNj where the number of discovery subframes for the first type of neighbor discovery mechanism in one discovery period is indicated, t is the current discovery period, M indicates the number of PRB pairs in each discovery subframe, I indicates the number of transmission opportunities allowed, ( ⁇ , ⁇ )) are the index and discovery subframe of the PRB pair used during the ith transmission, respectively.
  • mi ( ⁇ ) ⁇ M; (0 ⁇ ⁇ ; mi (-1) 50, and the UE_ID of the dormant user equipment is (IMSI mod 1024), and the UEJD of the connected user equipment is its C-RNTI; or
  • the wireless communication system comprises an LTE system and an IEEE 802.16m system.
  • mutually orthogonally configured for the first Types of discovered resources and resources for the second type of discovery are mutually orthogonally configured for the first Types of discovered resources and resources for the second type of discovery.
  • a second aspect of the present invention also provides a method for selecting a resource discovered by a neighbor in a user equipment in a wireless communication system, characterized in that the user equipment autonomously transmits based on carrier sensing or based on predefined rules. Discover the signal.
  • the predefined rule includes a time hopping scheme in the form of a hash function, where the time hopping scheme includes:
  • the present invention proposes a resource allocation method for D2D neighbor discovery of a cellular network, which enables the network to flexibly allocate neighbor discovery resources according to network conditions.
  • the allocation can achieve prioritization based on subscriptions and collision possibilities, etc., thereby improving the user experience.
  • the read method enables both connected user devices and dormant user devices to support neighbor discovery.
  • Figure 1 shows an application scenario of a method in accordance with the present invention
  • Figure 2 shows Type 1 and Type 2 in TDM mode in accordance with the present invention. Schematic diagram of resource allocation
  • FIG. 3 is a schematic diagram showing resource allocation of Type 1 and Type 2 in a joint TDM/FDM manner according to the present invention
  • Figure 4 is a flow chart showing the differentiation of discovery resources in a base station
  • FIG. 5 is a schematic diagram showing resource allocation of type 1 and type 2 of an application time hopping scheme
  • Figure 6 is a flow chart showing a method of using a base station in conjunction with a user equipment in accordance with the present invention.
  • Figure 1 shows an application scenario of the method according to the invention, i.e. there is a need for mutual discovery between UE1 and UE2.
  • the detailed discovery process design will be described below, and the solution can be applied to the LTE system. Of course, similarly, those skilled in the art will appreciate that the solution should be applicable to other systems, such as the IEEE 802.16m system.
  • the following three ⁇ 1 introduces the main idea of the present invention, namely: resource allocation type 1 and type 2 neighbor discovery, discovery transmission opportunities and access to subscription priority.
  • the base station will allocate type 1 and type 2 discovery resources in the form of TDM, FDM or joint TDM/FDM based on the current network.
  • 2 shows a resource allocation diagram of Type 1 and Type 2 in a TDM manner according to the present invention
  • 3 shows a schematic diagram of resource allocation for Type 1 and Type 2 in a combined TDM/FDM manner in accordance with the present invention.
  • the resource of type 1 and the resource of type 2 are orthogonally arranged with each other.
  • Resource configuration can be semi-static. As an example, if the number of user equipments with neighbor discovery requirements is small, then more Type 2 resources can be configured. Conversely, more Type 1 resources can be configured.
  • the base station will broadcast Type 1 resources to all user equipment in the system broadcast information, for example in SIB1.
  • Type 2 resources the base station sends explicit user equipment specific commands to indicate the resources used for discovery.
  • the base station can determine which types of discovery resources are used by which connected user devices based on each user device.
  • Type 2 resources can be applied to user devices in a connected state, such as user devices with high collision probability, high subscription priority, and the like.
  • a user equipment having a connection state such as a low collision probability, a low subscription priority, and a user equipment in a sleep state can apply a content type 1 based resource.
  • Figure 4 shows a flow chart for distinguishing discovery resources in a base station.
  • high priority user equipment is allowed to transmit discovery signals over time in one discovery cycle, thereby enabling other user equipment to discover the user equipment with high probability.
  • the above priority can be determined by the subscription priority of the user equipment or the decision of the base station itself, such as the likelihood of collision.
  • a time hopping scheme in the form of a hash function will be introduced to reduce the likelihood of collision.
  • Figure 5 shows a resource allocation diagram for Type 1 and Type 2 of an application time hopping scheme. It is assumed that N1 indicates the number of discovery subframes for the Type 1 neighbor discovery mechanism in one discovery period, t is the current discovery period, and M indicates the number of PRB pairs in each discovery process. I indicates the number of transmission opportunities allowed. (rrii (0, ⁇ (0) is the index and the discovery sub-frame of the PRB pair used during the i-th transmission, respectively, and mi O M ⁇ W A ⁇ has the following formula to give ni(t), ie:
  • the UEJD For a dormant user equipment, its UEJD is given in (IMSI mod 1024). For a connected user equipment, the UE-ID is its C-RNTI itself.
  • the above formula allows the user equipment transmitting on the same subframe to be transmitted on the same subframe at the next time due to the introduction of m ⁇ -l). This greatly increases the likelihood of discovery.
  • the priority is UE3>UE2>UE1. And compared to the discovery signal of UE1 only once, the discovery signal of UE2 and the discovery signal of UE3 are transmitted twice.
  • the following figure 5 shows an example of the above formula, the priority is UE3>UE2>UEL and the discovery signal of UE2 and the discovery signal of UE3 three times will be transmitted twice compared to the discovery signal of UE1 only once.
  • ⁇ 2 is merely exemplary.
  • UEJD and other forms of formulas and hash functions that may have used discovery sub-frames are also encompassed within the scope of the present invention.
  • the base station can explicitly transmit ( ⁇ , ; (0, ⁇ ; ( ⁇ ) form of discovery resources to transmit its discovery signal.
  • FIG. 6 is a flow chart showing a method for using a base station in cooperation with a user equipment according to the present invention.
  • the first four steps are all prior art and will not be described here.
  • the middle base station will acquire the predetermined priority, and in the sixth step, distinguish the type 1 and type 2 discovery resources based on the acquired subscription priority.
  • the base station can obtain a subscription priority to determine the discovery resource allocation.
  • Figure 5 shows a simplified registration and authentication process.
  • the server After accessing the service, the server determines the subscription priority and should send its acknowledgment message to the corresponding base station. Based on this, the base station can determine whether the type 1 or type 2 resource is allocated to the user equipment accordingly.
  • the present invention proposes a resource allocation method for D2D discovery of a cellular network, which allows the network to flexibly allocate discovery resources according to network conditions.
  • the allocation enables prioritization based on subscriptions and collision possibilities, etc., thereby improving the user experience.
  • the read method enables both connected user devices and dormant user devices to support neighbor discovery.

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

Abstract

La présente invention concerne un procédé destiné à faire répartir des ressources de découverte de voisins par une station de base et à faire émettre des signaux de découverte de voisins par un équipement d'utilisateur dans un système de communications sans fil, caractérisé en ce qu'un réseau prenant en charge la découverte de voisins et formé par la station de base prend en charge en même temps un premier type de mécanisme de découverte basé sur la non-affectation d'équipements d'utilisateurs et un deuxième type de mécanisme de découverte basé sur l'affectation d'équipements d'utilisateurs. Le procédé peut être appliqué à un procédé de répartition de ressources de découverte de voisins en D2D d'un réseau cellulaire, ce qui permet au réseau de répartir de façon souple des ressources de découverte de voisins en fonction de conditions du réseau. De plus, la répartition peut réaliser une distinction de priorités sur la base d'un abonnement, de possibilités de collision, etc., améliorant ainsi l'agrément d'utilisation. En outre, le procédé permet la prise en charge de la découverte de voisins à la fois par un équipement d'utilisateur connecté et par un équipement d'utilisateur dormant.
PCT/CN2013/084297 2013-09-26 2013-09-26 Procédé de répartition de ressources de découverte de voisins Ceased WO2015042822A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2013/084297 WO2015042822A1 (fr) 2013-09-26 2013-09-26 Procédé de répartition de ressources de découverte de voisins
CN201380079433.4A CN105519194B (zh) 2013-09-26 2013-09-26 一种用于分配邻居发现资源的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2013/084297 WO2015042822A1 (fr) 2013-09-26 2013-09-26 Procédé de répartition de ressources de découverte de voisins

Publications (1)

Publication Number Publication Date
WO2015042822A1 true WO2015042822A1 (fr) 2015-04-02

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WO (1) WO2015042822A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4004842A1 (fr) * 2019-07-31 2022-06-01 Hitachi Energy Switzerland AG Découverte de données sémantiques autonomes pour systèmes en réseau distribués

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103209461A (zh) * 2013-02-26 2013-07-17 无锡清华信息科学与技术国家实验室物联网技术中心 基于协同素数的非对称低轮值周期邻居发现方法
WO2013130319A1 (fr) * 2012-02-27 2013-09-06 Huawei Technologies Co., Ltd. Système et procédé d'attribution de ressources de réseau
CN103327568A (zh) * 2012-03-21 2013-09-25 中国移动通信集团公司 资源分配消息发送方法、设备发现方法及相关设备

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101765215B (zh) * 2010-01-19 2012-08-08 华为技术有限公司 专用前导序列分配方法和装置
CN102348214A (zh) * 2010-08-02 2012-02-08 中国移动通信集团公司 确定终端类型的方法、缓解网络拥塞的方法以及相关装置
CN103098537B (zh) * 2010-09-14 2016-05-25 诺基亚技术有限公司 一种无线通信方法和装置
CN102651869A (zh) * 2011-02-28 2012-08-29 中兴通讯股份有限公司 一种频谱资源分配方法及装置
GB2497589A (en) * 2011-12-16 2013-06-19 Renesas Mobile Corp Resource Allocation in a Wireless Communication System
CN102547871B (zh) * 2012-02-07 2015-07-29 华为技术有限公司 一种d2d通信中的资源协商方法及设备
CN103442442B (zh) * 2013-08-13 2016-01-27 北京交通大学 一种基站辅助的d2d通信系统中设备发现的方法
WO2015076867A1 (fr) * 2013-11-22 2015-05-28 Fujitsu Limited Signalisation d'un canal de données de dispositif à dispositif

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013130319A1 (fr) * 2012-02-27 2013-09-06 Huawei Technologies Co., Ltd. Système et procédé d'attribution de ressources de réseau
CN103327568A (zh) * 2012-03-21 2013-09-25 中国移动通信集团公司 资源分配消息发送方法、设备发现方法及相关设备
CN103209461A (zh) * 2013-02-26 2013-07-17 无锡清华信息科学与技术国家实验室物联网技术中心 基于协同素数的非对称低轮值周期邻居发现方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4004842A1 (fr) * 2019-07-31 2022-06-01 Hitachi Energy Switzerland AG Découverte de données sémantiques autonomes pour systèmes en réseau distribués
EP4004842B1 (fr) * 2019-07-31 2025-11-05 Hitachi Energy Ltd Découverte de données sémantiques autonomes pour systèmes en réseau distribués

Also Published As

Publication number Publication date
CN105519194B (zh) 2020-11-20
CN105519194A (zh) 2016-04-20

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