Protecting physical cell identifiers

Patent metadata

Field	Value
Publication number	US-11659476-B2
Application number	US-202117302940-A
Country	US
Kind code	B2
Filing date	May 17, 2021
Priority date	Mar 29, 2018
Publication date	May 23, 2023
Grant date	May 23, 2023

Abstract

A base station device broadcasts a base station identifier. The base station identifier is assigned to the base station device, and is broadcasted in one or more system information messages that are receivable by user devices located within a threshold distance from the base station device. The base station device determines whether the base station identifier is to be altered, and processes the base station identifier to generate an altered base station identifier for the base station device. The base station device performs one or more actions to cause the altered base station identifier to be broadcasted. The altered base station identifier is broadcasted in one or more additional system information messages that are receivable by the user devices.

First claim

What is claimed is:

1. A base station device, comprising:
one or more processors configured to:
broadcast, in one or more messages, a base station identifier assigned to the base station device,
the base station identifier having a value stored in a location-based service (LBS) server device;

process the base station identifier to generate an altered base station identifier for the base station device,
the base station identifier being processed by an operation that corresponds to an operation in which the LBS server device processes the value of the base station identifier, and
the base station identifier being processed at a time that corresponds to a time at which the LBS server device processes the value of the base station identifier; and

perform one or more actions to cause the altered base station identifier to be broadcasted,
the altered base station identifier being broadcasted in one or more additional messages that are receivable by user devices.

2. The base station device of claim 1 , wherein the altered base station identifier matches a base station identifier value that is generated at one or more LBS server devices including the LBS server device.

3. The base station device of claim 1 , wherein a timer is initiated for the base station identifier synchronously with the LBS server device initiating a timer.

4. The base station device of claim 1 , wherein the base station identifier being processed using a first operation corresponds to a second operation associated with the LBS server device when processing the value of the base station identifier.

5. The base station device of claim 1 , wherein the base station identifier includes a physical cell identifier, and
wherein the one or more processors, when processing the base station identifier to generate an altered base station identifier, are to:
process the base station identifier to generate the altered base station identifier by one or more of:
adding a value to the physical cell identifier,
subtracting a value from the physical cell identifier,
multiplying the physical cell identifier by a value, or
dividing the physical cell identifier by a value.

6. The base station device of claim 1 , wherein the base station identifier includes a physical cell identifier, and
wherein the one or more processors, when processing the base station identifier to generate an altered base station identifier, are to:
process the base station identifier to generate the altered base station identifier; and

wherein the one or more processors are further to:
reinitiate a timer after processing the altered base station identifier.

7. The base station device of claim 1 , wherein the one or more processors are further to:
perform at least one action to cause the altered base station identifier to be provided to the LBS server device to enable the LBS server device to provide one or more LBSs to user devices that are served by the base station device.

8. A non-transitory computer-readable medium storing instructions, the instructions comprising:
one or more instructions that, when executed by one or more processors of a base station device, cause the one or more processors to:
broadcast, in one or more messages, a base station identifier assigned to the base station device,
the base station identifier having a value stored in a location-based service (LBS) server device;

process the base station identifier to generate an altered base station identifier for the base station device,
the base station identifier being processed at a time that corresponds to a time at which the LBS server device processes the value of the base station identifier; and

perform one or more actions to cause the altered base station identifier to be broadcasted,
the altered base station identifier being broadcasted in one or more additional messages that are receivable by user devices.

9. The non-transitory computer-readable medium of claim 8 , wherein the altered base station identifier matches a base station identifier value that is generated at one or more LBS server devices including the LBS server device.

10. The non-transitory computer-readable medium of claim 8 , wherein:
the base station identifier includes a physical cell identifier associated with a first value, and
the altered base station identifier includes the physical cell identifier associated with a second value,
the second value being different than the first value.

11. The non-transitory computer-readable medium of claim 8 , wherein the base station identifier being processed using a first operation corresponds to a second operation associated with the LBS server device when processing the value of the base station identifier.

12. The non-transitory computer-readable medium of claim 8 , wherein the base station identifier is broadcasted in one or more messages that are receivable by the user devices.

13. The non-transitory computer-readable medium of claim 8 , wherein the one or more instructions, that cause the one or more processors to broadcast the base station identifier, cause the one or more processors to:
broadcast a base station identifier in one or more system information block (SIB) messages.

14. The non-transitory computer-readable medium of claim 8 , wherein a timer is initiated for the base station identifier synchronously with the LBS server device initiating a timer.

15. A method, comprising:
broadcasting, by a base station device, a base station identifier assigned to the base station device,
the base station identifier having a value stored in a location-based service (LBS) server device;

processing, by the base station device, the base station identifier to generate an altered base station identifier for the base station device,
the base station identifier being processed at a time that corresponds to a time at which the LBS server device processes the value of the base station identifier; and

performing, by the base station device, one or more actions to cause the altered base station identifier to be broadcasted,
the altered base station identifier being broadcasted in one or more additional messages that are receivable by user devices.

16. The method of claim 15 , wherein a timer is initiated for the base station identifier synchronously with the LBS server device initiating a timer.

17. The method of claim 15 , wherein:
the base station identifier includes a physical cell identifier associated with a first value, and
the altered base station identifier includes the physical cell identifier associated with a second value,
the second value being different than the first value.

18. The method of claim 15 , wherein the base station identifier being processed using a first operation corresponds to a second operation associated with the LBS server device when processing the value of the base station identifier.

19. The method of claim 15 , the base station identifier being broadcasted in one or more messages that are receivable by the user devices.

20. The method of claim 15 , further comprising:
performing at least one action to cause the altered base station identifier to be provided to the LBS server device to enable the LBS server device to provide one or more location-based services to user devices that are served by the base station device.

Assignees

• Verizon Patent & Licensing Inc

Inventors

• Schmidt Christopher M
• Zhu Lily
• Panchal Abhishek Rajendrakumar

Classifications

• H04W88/08

  Access point devices · CPC title

• H04W4/021

  Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences · CPC title

• H04W4/06

  Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services · CPC title

• H04W48/10 Primary

  using broadcasted information · CPC title

• H04W48/12 Primary

  using downlink control channel · CPC title