KR-102962482-B1 - secure sidelink communications

KR102962482B1KR 102962482 B1KR102962482 B1KR 102962482B1KR-102962482-B1

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may receive information associated with one or more security keys for sidelink communication from a base station or a roadside unit (RSU), wherein the information comprises at least one of a primary key, one or more security keys, or one or more parameters for deriving one or more security keys. The UE may transmit scrambled sidelink communication to a second UE using a security key among one or more security keys. A number of other aspects are described.

Inventors

발라수브라마니안, 아난타라만
파틸, 샤일레쉬
청, 홍
마쉬, 진 위슬리
우, 슈안슈안
굴라티, 카필

Assignees

퀄컴 인코포레이티드

Dates

Publication Date: 20260507
Application Date: 20220831
Priority Date: 20211020

Claims (20)

As a first user equipment (UE) for wireless communication, Memory; and It includes one or more processors coupled to the memory, and the one or more processors, Information associated with one or more security keys for sidelink communications is received from a base station or RSU (roadside unit) (810) - said information includes at least one of a primary key, said one or more security keys, or one or more parameters for deriving said one or more security keys, said one or more security keys include a first security key for protecting a SCI-1 (first stage SCI (sidelink control information)) message and a second security key for protecting a SCI-2 (second stage SCI) message, said SCI-1 message is transmitted over a PSCCH (physical sidelink control channel) and said SCI-2 message is transmitted over a PSSCH (physical sidelink shared channel) -; and A first user device for wireless communication configured to transmit (820) sidelink communication scrambled at the PHY (physical) layer of the first UE to the second UE using a security key among the one or more security keys.
In paragraph 1, the one or more processors receive the information associated with the one or more security keys, Validation parameter indicating the amount of time the above information is valid, permutation index, or Indication of which stages or types of SCI (sidelink control information) will be scrambled using the one or more security keys mentioned above. Configured to receive at least one of the indications, or The above one or more processors, in order to receive the information associated with the above one or more security keys, A first user device for wireless communication configured to receive said information through at least one of a downlink control information message, a radio resource control message, or a media access control message.
In paragraph 1, the above one or more processors, A first user device for wireless communication, further configured to generate the security key using a key generation function based at least partially on the one or more parameters and the basic key.
In paragraph 3, the key generation function is pre-configured on the first UE or indicated through configuration information, and the one or more processors are, A first user device for wireless communication, further configured to receive a dynamic message from the base station or the RSU indicating values for the one or more parameters to be used with the key generation function to derive the one or more security keys.
A first user device for wireless communication according to claim 1, wherein the one or more parameters include at least one of a cell identifier or a location area identifier.
In paragraph 1, the above one or more processors, Generate a scrambling sequence using the above security key; and A first user device for wireless communication, additionally configured to scramble the sidelink communication using the scrambled sequence.
In paragraph 6, the one or more processors are, in order to scramble the sidelink communication, It is configured to scramble all information included in the sidelink communication using the above scrambling sequence, or The above sidelink communication includes a set of fields, and the one or more processors, in order to scramble the sidelink communication, A first user device for wireless communication configured to scramble information contained in a subset of fields of the set of fields using the scrambled sequence above.
In paragraph 1, the sidelink communication is SCI-1 (first stage SCI (sidelink control information)) communication, and the one or more processors, in order to transmit the sidelink communication, Generate different security keys associated with SCI-2 (second stage SCI); and It is configured to transmit the sidelink communication, which is scrambled using the security key, to the second UE, and the sidelink communication indicates the different security key, or The above information is included in the most recently received downlink control information message, and the one or more processors, in order to transmit the sidelink communication, It is configured to transmit the sidelink communication scrambling using the security key, and the security key is generated using the information based at least partially on the fact that the information is included in the most recently received downlink control information message, or The above information includes a validity parameter indicating the amount of time the above information is valid, and the one or more processors, in order to transmit the sidelink communication, A first user device for wireless communication configured to transmit the sidelink communication scrambling using the security key, wherein the security key is generated using the information based at least partially on the validity parameter indicating that the information is valid at the time when the sidelink communication is transmitted.
A wireless communication method performed by a first user device (UE), Step (1810) of receiving information associated with one or more security keys for sidelink communications from a base station or RSU (roadside unit) - said information includes at least one of a primary key, said one or more security keys, or one or more parameters for deriving said one or more security keys, said one or more security keys include a first security key for protecting an SCI-1 (first stage SCI (sidelink control information)) message and a second security key for protecting an SCI-2 (second stage SCI) message, said SCI-1 message is transmitted over a PSCCH (physical sidelink control channel) and said SCI-2 message is transmitted over a PSSCH (physical sidelink shared channel) -; and A wireless communication method performed by a first user device, comprising the step (1820) of transmitting sidelink communication scrambled at the PHY (physical) layer of the first UE to the second UE using a security key among the one or more security keys.
In paragraph 9, the step of receiving the information associated with the one or more security keys is, Validation parameter indicating the amount of time the above information is valid, Substitution index, or Indication of which stages or types of SCI (sidelink control information) will be scrambled using the one or more security keys mentioned above. It includes the step of receiving at least one of the indications, or The step of receiving the information associated with the one or more security keys mentioned above is: The method includes the step of receiving the information through at least one of a downlink control information message, a radio resource control message, or a media access control message, or The above sidelink communication is SCI-1 (first stage SCI (sidelink control information)) communication, and the step of transmitting the above sidelink communication is, A step of generating different security keys associated with SCI-2 (second stage SCI); and The method includes the step of transmitting the sidelink communication, which is scrambled using the security key, to the second UE, wherein the sidelink communication indicates the different security key, or The above information is included in the most recently received downlink control information message, and the step of transmitting the sidelink communication is The method includes the step of transmitting the sidelink communication that is scrambled using the security key, wherein the security key is generated using the information based at least partially on the fact that the information is included in the most recently received downlink control information message, or The above information includes a validity parameter indicating the amount of time during which the information is valid, and the step of transmitting the sidelink communication is A wireless communication method performed by a first user device, comprising the step of transmitting the sidelink communication that is scrambled using the security key, wherein the security key is generated using the information based at least partially on the validity parameter indicating that the information is valid at the time when the sidelink communication is transmitted.
In Paragraph 9, A wireless communication method performed by a first user device, further comprising the step of generating the security key based at least partially on the one or more parameters and the basic key using a key generation function.
In paragraph 11, the key generation function is pre-configured on the first UE or indicated through configuration information, and the method is, A wireless communication method performed by a first user device, further comprising the step of receiving a dynamic message from the base station or the RSU that indicates values for the one or more parameters to be used with the key generation function to derive the one or more security keys.
A wireless communication method performed by a first user device, wherein, in claim 9, the one or more parameters include at least one of a cell identifier or a location area identifier.
In Paragraph 9, A step of generating a scrambling sequence using the above security key; and A wireless communication method performed by a first user device, further comprising the step of scrambling the sidelink communication using the scrambling sequence above.
In paragraph 14, the step of scrambling the side-link communication is, It includes the step of scrambling all information included in the sidelink communication using the scrambling sequence above, or The above side-link communication includes a set of fields, and the step of scrambling the side-link communication is, A wireless communication method performed by a first user device, comprising the step of scrambling information contained in a subset of fields of the set of fields using the scrambling sequence.
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Description

secure sidelink communications Cross-reference regarding related applications This patent application claims priority to U.S. Regular Patent Application No. 17/451,526, filed on October 20, 2021, with the title of the invention "SECURE SIDELINK COMMUNICATIONS", which is hereby expressly incorporated herein by reference. Technology field The aspects of the present disclosure generally relate to wireless communication and to techniques and devices for secure sidelink communications. Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. Conventional wireless communication systems may utilize multiple-access technologies that support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple-access technologies include CDMA (code division multiple access) systems, TDMA (time division multiple access) systems, FDMA (frequency division multiple access) systems, OFDMA (orthogonal frequency division multiple access) systems, SC-FDMA (single-carrier frequency division multiple access) systems, TD-SCDMA (time division synchronous code division multiple access) systems, and LTE (Long Term Evolution). LTE/LTE-Advanced is a set of enhancements to the UMTS (Universal Mobile Telecommunications System) mobile standard released by the 3GPP (Third Generation Partnership Project). A wireless network may include one or more base stations that support communication for a User Equipment (UE) or a number of UEs. A UE may communicate with a base station via downlink communications and uplink communications. "Downlink" (or "DL") refers to a communication link from a base station to a UE, and "uplink" (or "UL") refers to a communication link from a UE to a base station. The above multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables different UEs to communicate at the city, national, regional, and/or even global levels. New Radio (NR), which may also be referred to as 5G, is a set of enhancements to the LTE mobile standard announced by 3GPP. NR is designed to better support mobile broadband internet access by improving spectrum efficiency, lowering costs, enhancing services, utilizing new spectrum, and using CP-OFDM (Orthogonal Frequency-Division Multiplexing with CP (Cyclic Prefix)) on the downlink and CP-OFDM and/or SC-FDM (Single-Carrier Frequency Division Multiplexing) on the uplink (also known as DFT-s-OFDM (Discrete Fourier Transform Spread OFDM)), as well as supporting beamforming, MIMO (Multiple-Input Multiple-Output) antenna technology, and carrier aggregation to integrate better with other open standards. As the demand for mobile broadband access continues to grow, further improvements in LTE, NR, and other radio access technologies remain useful. Some aspects described herein relate to a first user equipment (UE) for wireless communication. The first UE may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to receive information associated with one or more security keys for sidelink communications from a base station or a roadside unit (RSU), wherein the information includes at least one of a primary key, one or more security keys, or one or more parameters for deriving one or more security keys. The one or more processors may be configured to transmit sidelink communications scrambled using a security key among one or more security keys to a second UE. Some aspects described herein relate to a wireless communication method performed by a first UE. The method may include the step of receiving information associated with one or more security keys for sidelink communications from a base station or RSU, wherein the information includes at least one of a primary key, one or more security keys, or one or more parameters for deriving one or more security keys. The method may include the step of transmitting a sidelink communication scrambled using a security key among one or more security keys to a second UE. Some aspects described herein relate to a non-transient computer-readable medium storing a set of instructions for wireless communication by a UE. When executed by one or more processors of a first UE, the set of instructions may cause the first UE to receive information associated with one or more security keys for sidelink communications from a base station or RSU, wherein the information comprises at least one of a primary key, one or more security keys, or one or more parameters for deriving one or more security keys. When executed by one or more processors of a first UE, the set of instructions may cause the first UE to transmit scrambled sidelink communication to a second UE using a security key among one or more security keys. Some aspects described herein relate to an apparatus for wireless communicatio