Method and device for measuring signal in wireless communication system

• US 8,873,413 B2
• Filed: 02/21/2012
• Issued: 10/28/2014
• Est. Priority Date: 02/21/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jang, Jaehyuk, Kim, Soenghun
• Primary Examiner(s): Yao, Kwang B
• Assistant Examiner(s): DUDA, ADAM K
• Application Number:
  US13/400,853
• Publication Number:
  US 20120213107A1
• Time in Patent Office: 980 Days
• Field of Search: 370/252
• US Class Current: 370/252
• CPC Class Codes: H04L 1/1835 Buffer management
• CPC Class Codes: H04L 1/1851 using multiple timers
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1874 Buffer management
• CPC Class Codes: H04L 1/1883 using multiple timers
• CPC Class Codes: H04L 27/2662 Symbol synchronisation
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0032 Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04L 5/0078 Timing of allocation
• CPC Class Codes: H04L 5/0082 at predetermined intervals
• CPC Class Codes: H04L 5/0098 Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 24/04 Arrangements for maintaining operational condition
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0219 where the power saving management affects multiple terminals
• CPC Class Codes: H04W 52/146 : Uplink power control
• CPC Class Codes: H04W 52/228 : using past power values or information
• CPC Class Codes: H04W 52/286 : during data packet transmission, e.g. high speed packet access [HSPA]
• CPC Class Codes: H04W 52/346 : distributing total power among users or channels
• CPC Class Codes: H04W 52/365 : Power headroom reporting
• CPC Class Codes: H04W 52/367 : Power values between minimum and maximum limits, e.g. dynamic range
• CPC Class Codes: H04W 52/50 : at the moment of starting communication in a multiple access environment
• CPC Class Codes: H04W 52/545 : modifying TPC bits in special situations
• CPC Class Codes: H04W 56/0005 : synchronizing of arrival of multiple uplinks
• CPC Class Codes: H04W 56/001 : Synchronization between nodes
• CPC Class Codes: H04W 56/0015 : one node acting as a reference for the others
• CPC Class Codes: H04W 56/0045 : compensating for timing error by altering transmission time
• CPC Class Codes: H04W 56/005 : compensating for timing error by adjustment in the receiver
• CPC Class Codes: H04W 72/00 : Local resource management
• CPC Class Codes: H04W 72/04 : Wireless resource allocation
• CPC Class Codes: H04W 72/0446 : Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 : Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/21 : in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 : in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/542 : using measured or perceived quality
• CPC Class Codes: H04W 72/543 : based on requested quality, e.g. QoS
• CPC Class Codes: H04W 74/006 : in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/0833 : Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 74/085 : collision avoidance
• CPC Class Codes: H04W 74/0858 : collision detection
• CPC Class Codes: H04W 74/0891 : for synchronized access
• CPC Class Codes: H04W 76/19 : Connection re-establishment
• CPC Class Codes: H04W 76/38 : triggered by timers
• CPC Class Codes: H04W 84/042 : Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 88/02 : Terminal devices
• CPC Class Codes: H04W 88/06 : adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: H04W 88/08 : Access point devices
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

A signal measurement method and a device for comparing measurement results of a serving cell and a neighbor cell in a wireless communication system are provided. The method includes receiving a resource restriction pattern including first pattern information that indicates specific subframes to be restricted in measurement of the serving cell, measuring the neighbor cell at a first frequency band, measuring, if a predetermined condition is met, the serving cell applying the first pattern information, and measuring, if the predetermined condition is not met, the serving cell without applying the first pattern information and performing evaluation by comparing a serving cell measurement result obtained from measurement of the serving cell with a neighbor cell measurement result obtained from measurement of the neighbor cell.

Claims

1. A method for comparing measurement results of a serving cell and a neighbor cell, the method comprising:

receiving, by a user equipment (UE), a resource restriction pattern including first pattern information that indicates specific subframes to be restricted in measurement of the serving cell;

measuring, by the UE, the neighbor cell at a first frequency band;

measuring, by the UE, if a predetermined condition is met, the serving cell applying the first pattern information, and measuring, if the predetermined condition is not met, the serving cell without applying the first pattern information; and

performing, by the UE, evaluation by comparing a serving cell measurement result obtained from measurement of the serving cell with a neighbor cell measurement result obtained from measurement of the neighbor cell.

2. The method of claim 1, wherein the measuring of the serving cell includes:

measuring, if a frequency band of the serving cell overlaps at least in part with the first frequency band, the serving cell applying the first pattern information, and measuring, if the frequency band of the serving cell does not overlap with the first frequency band, the serving cell without applying the first pattern information.

3. The method of claim 1, wherein the measuring of the serving cell includes:

measuring, if a data transmission/reception rate is equal to or greater than a predetermined value in the first frequency band, the serving cell applying the first pattern information, and measuring, if the data transmission/reception rate is lower than the predetermined value, the serving cell without applying the first pattern information.

4. The method of claim 1, wherein the measuring of the serving cell includes:

measuring, if a frequency band of a last Radio Resource Control (RRC) configuration or reconfiguration corresponds to the first frequency band, the serving cell applying the first pattern information, and measuring, if the frequency band of the last RRC configuration or reconfiguration does not correspond to the first frequency band, the serving cell without applying the first pattern information.

5. The method of claim 1, wherein the resource restriction pattern further includes second pattern information that indicates specific subframes to be restricted in measurement of the neighbor cell, and

wherein the measuring of the serving cell comprises:

measuring, if the second pattern information is applied to the neighbor cell measurement in the first frequency band, the serving cell applying the first pattern information, and measuring, if the second pattern information is not applied to the neighbor cell measurement in the first frequency band, the serving cell without applying the first pattern information.

6. The method of claim 1, wherein the measuring of the serving cell includes:

measuring, if measurement of the neighbor cell is an intra-frequency cell measurement, the serving cell applying the first pattern information, and measuring, if the neighbor cell measurement is an inter-frequency cell measurement, the serving cell without applying the first pattern information.

7. The method of claim 1, wherein the measuring of the serving cell includes:

measuring, if a frequency band of the serving cell is identical to the first frequency band, the serving cell applying the first pattern information, and measuring, if the frequency band of the serving cell is not identical to the first frequency band, the serving cell without applying the first pattern information.

8. A device for comparing measurement results of a serving cell and a neighbor cell, the device comprising:

a transceiver configured to receive a resource restriction pattern including first pattern information that indicates specific subframes to be restricted in measurement of the serving cell; and

a control unit configured to measure the neighbor cell at a first frequency band, to measure, if a predetermined condition is met, the serving cell applying the first pattern information, to measure, if the predetermined condition is not met, the serving cell without applying the first pattern information, and to perform evaluation by comparing a serving cell measurement result obtained from measurement of the serving cell with a neighbor cell measurement result obtained from measurement of the neighbor cell.

9. The device of claim 8, wherein the control unit is further configured to measure, if a frequency band of the serving cell overlaps at least in part with the first frequency band, the serving cell applying the first pattern information, and to measure, if the frequency band of the serving cell does not overlap with the first frequency band, the serving cell without applying the first pattern information.

10. The device of claim 8, wherein the control unit is further configured to measure, if a data transmission/reception rate is equal to or greater than a predetermined value in the first frequency band, the serving cell applying the first pattern information, and to measure, if the data transmission/reception rate is lower than the predetermined value, the serving cell without applying the first pattern information.

11. The device of claim 8, wherein the control unit is further configured to measure, if a frequency band of a last Radio Resource Control (RRC) configuration or reconfiguration corresponds to the first frequency band, the serving cell applying the first pattern information, and to measure, if the frequency band of the last RRC configuration or reconfiguration does not correspond to the first frequency band, the serving cell without applying the first pattern information.

12. The device of claim 8, wherein the resource restriction pattern further includes second pattern information that indicates specific subframes to be restricted in measurement of the neighbor cell, and

wherein the control unit is further configured to measure, if the second pattern information is applied to the neighbor cell measurement in the first frequency band, the serving cell applying the first pattern information, and to measure, if the second pattern information is not applied to the neighbor cell measurement in the first frequency band, the serving cell without applying the first pattern information.

13. The device of claim 8, wherein the control unit is further configured to measure, if measurement of the neighbor cell is an intra-frequency cell measurement, the serving cell applying the first pattern information, and to measure, if the neighbor cell measurement is an inter-frequency cell measurement, the serving cell without applying the first pattern information.

14. The device of claim 8, wherein the control unit is further configured to measure, if a frequency band of the serving cell is identical to the first frequency band, the serving cell applying the first pattern information, and to measure, if the frequency band of the serving cell is not identical to the first frequency band, the serving cell without applying the first pattern information.