Sidelink operation method of user equipment in wireless communication system, and user equipment using same

{
  "publication_number": "US10499375B2",
  "country": "US",
  "kind": "B2",
  "title": "Sidelink operation method of user equipment in wireless communication system, and user equipment using same",
  "abstract": "Provided are a sidelink operation method of a user equipment (UE) in a wireless communication system, and a UE that uses the method. The method comprises: transmitting a sidelink gap request to a serving cell; receiving, from the serving cell, a message for setting a plurality of sidelink gap patterns in response to the sidelink gap request; and receiving, from the serving cell, information for activating a predetermined sidelink gap pattern from among the plurality of sidelink gap patterns.",
  "claims": [
    "1. A method for performing sidelink operation of a user equipment (UE) in a wireless communication system, comprising: transmitting a sidelink gap request to a serving cell; receiving a message configuring a plurality of sidelink gap patterns as a response to the sidelink gap request from the serving cell; and receiving information activating a specific sidelink gap pattern, among the plurality of sidelink gap patterns, from the serving cell, wherein the sidelink gap request further includes a list indicating frequencies that require configuration of a sidelink gap.",
    "2. The method of claim 1, wherein the sidelink gap request further includes information notifying a sidelink operation that is to be performed by the UE.",
    "3. The method of claim 2, wherein the sidelink operation is related to one of sidelink signal reception and sidelink signal transmission.",
    "4. The method of claim 1, wherein the sidelink gap request includes type information indicating a type of a sidelink gap, wherein the type information indicates whether the sidelink gap is designated for a sidelink operation in an intra-frequency, whether the sidelink gap is designated for a sidelink operation in an inter-frequency, or whether the sidelink gap is designated for a sidelink operation in an intra-frequency and an inter-frequency.",
    "5. The method of claim 1, wherein, when a command instructing acquisition of sidelink gap information related to a neighboring cell is received from the serving cell, sidelink gap information of the neighboring cell is acquired.",
    "6. The method of claim 5, wherein the command configures a gap section for acquiring the sidelink gap information related to the neighboring cell.",
    "7. The method of claim 5, wherein the sidelink gap information acquired from the neighboring cell is reported to the serving cell.",
    "8. The method of claim 1, wherein the sidelink gap request is transmitted to the serving cell only in a case where capability information allowing the serving cell to configure a sidelink gap is received from the serving cell.",
    "9. The method of claim 1, wherein, when transmitting the sidelink gap request, a prohibit timer is initiated.",
    "10. The method of claim 9, wherein, while the prohibit timer is being operated, another sidelink gap request is not transmitted.",
    "11. The method of claim 9, wherein, while the prohibit timer is being operated, another sidelink gap request is allowed to be transmitted only in a case where a change in the sidelink gap request occurs.",
    "12. The method of claim 1, wherein a sidelink operation is performed in a subframe related to the specific sidelink gap pattern.",
    "13. The method of claim 12, wherein a cellular operation with a serving cell being configured to the UE is limited in a subframe related to the specific sidelink gap pattern.",
    "14. A user equipment, comprising: a transmitter and a receiver for transmitting and receiving radio signals; and a processor operatively coupled to the transmitter and the receiver, wherein the processor is configured to: transmit, via the transmitter, a sidelink gap request to a serving cell, receive, via the receiver, a message configuring a plurality of sidelink gap patterns as a response to the sidelink gap request from the serving cell, and receive, via the receiver, information activating a specific sidelink gap pattern, among the plurality of sidelink gap patterns, from the serving cell, wherein the sidelink gap request further includes a list indicating frequencies that require configuration of a sidelink gap."
  ],
  "description_excerpt": "Field of the Invention\n\nThe present invention related to wireless communication and, most particularly, to a sidelink operation method being performed by a user equipment in a wireless communication system and a user equipment using the same.\n\nRelated Art\n\nIn International Telecommunication Union Radio communication sector (ITU-R), a standardization task for International Mobile Telecommunication (IMT)-Advanced, that is, the next-generation mobile communication system since the third generation, is in progress. IMT-Advanced sets its goal to support Internet Protocol (IP)-based multimedia services at a data transfer rate of 1 Gbps in the stop and slow-speed moving state and of 100 Mbps in the fast-speed moving state.\n\nFor example, 3rd Generation Partnership Project (3GPP) is a system standard to satisfy the requirements of IMT-Advanced and is preparing for LTE-Advanced improved from Long Term Evolution (LTE) based on Orthogonal Frequency Division Multiple Access (OFDMA)/Single Carrier-Frequency Division Multiple Access (SC-FDMA) transmission schemes. LTE-Advanced is one of strong candidates for IMT-Advanced.\n\nThere is a growing interest in a Device-to-Device (D2D) technology in which devices perform direct communication. In particular, D2D has been in the spotlight as a communication technology for a public safety network. A commercial communication network is rapidly changing to LTE, but the current public safety network is basically based on the 2G technology in terms of a collision problem with existing communication standards and a cost.",
  "cpc": [
    "H04W 72/04",
    "H04W 48/02",
    "H04W 72/0453",
    "H04W 72/20",
    "H04W 72/23",
    "H04W 76/14",
    "H04W 76/23"
  ],
  "ipc": [
    "H04W 72/04",
    "H04W 48/02",
    "H04W 76/14"
  ],
  "assignees": [
    "LG Electronics Inc"
  ],
  "inventors": [
    "Sunghoon Jung",
    "Jaewook Lee"
  ],
  "filing_date": "2016-09-19",
  "publication_date": "2019-12-03",
  "grant_date": "2019-12-03",
  "priority_date": "2015-09-16",
  "application_number": "US-201615760313-A",
  "family_id": "58289208",
  "cited_by_count": 6,
  "citations": [
    "WO2015065109A1",
    "US20150215903A1",
    "US20170041773A1",
    "US20180167988A1",
    "US20180302779A1",
    "US20170127405A1",
    "US20170353819A1"
  ]
}