US 2015/0319701 A1 · SYSTEM AND METHOD FOR TIMING ALIGNMENT OF LTE CELLS AND INTER-OPERATOR CO-EXISTENCE ON UNLICENSED SPECTRUM

Abstract

An eNodeB operated by a first operator is able to align an ON-OFF cycle operation for interference avoidance. The eNodeB receives, from another eNodeB operated by a second operator a physical broadcast channel (PBCH) and a physical downlink shared channel (PDSCH). A transmission coverage of the eNodeB partially overlaps with a transmission coverage of the other eNodeB. The PBCH carries a master information block (MIB), and the PDSCH carries a single system information block (SIB) identifying available unlicensed channel and including public land mobile network (PLMN) identities for networks operating using the unlicensed channel. The eNodeB uses the MIB and SIB1 to identify that the second eNodeB is operated by the second operator.

Claims20

Dependent claims

A wireless transmission point comprising:

at least one antenna configured to communicate with a plurality of mobile terminals;
and
processing circuitry configured to:
adjust an ON-OFF cycle operation of the at least one antenna, wherein the ON-OFF cycle operation comprises an ON period during which the at least one antenna transmits data and control signals, and an OFF period in which one of:
no signals are transmitted and only discovery reference signals are transmitted;
detect data and control signals transmitted from at least one other transmission point;
determine a start of an ON-OFF cycle operation of the at least one other transmission point, and
align the ON-OFF cycle operation of the at least one antenna with the ON-OFF cycle operation of the at least one other transmission point.

5 more elements

A mobile terminal comprising:

at least one antenna configured to communicate with at least one access point (AP);
and
processing circuitry configured to:
send and receive data with the at least one AP, and
in response to detecting a presence of at least one other transmission point, send a detection report to the at least one AP, the detection report configured to enable the at least one AP to align an ON-OFF cycle operation with the at least one other transmission point, wherein the ON-OFF cycle operation comprises an ON period during which the at least one AP transmits data and control signals, and an OFF period in which one of:
no signals are transmitted and only discovery reference signals are transmitted.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/702,247Filed 1 May 2015

Priority

1 May 2014

Published

5 Nov 2015

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04B 17/328
Received signal strength: reference signal received power [RSRP]; Reference signal received quality [RSRQ]
H04B 17/18
Performance testing: monitoring during normal operation
H04L 5/005
Allocation of pilot signals, i.e. of signals known to the receiver: of common pilots, i.e. pilots destined for multiple users or terminals
H04W 8/005
Network data management: discovery of network devices, e.g. terminals

Family

Application61/987,312Us provisional application · filed 1 May 2014

Application62/105,504Us provisional application · filed 20 Jan 2015

Application62/105,519Us provisional application · filed 20 Jan 2015

US 10,148,369 B2Related patent

US 2015/0319701 A1This patent

From the US filing history. Foreign family members aren’t listed.

System and method for timing alignment of lte cells and inter-operator co-existence on unlicensed spectrum

Life of this patent

System and method for timing alignment of lte cells and inter-operator co-existence on unlicensed spectrum

Life of this patent

Abstract

Claims20