DISCOVERY SIGNAL IN CLUSTER-BASED SMALL CELL

• US 20150004969A1
• Filed: 09/06/2013
• Published: 01/01/2015
• Est. Priority Date: 01/17/2013
• Status: Abandoned Application

• Current Assignee: Intel IP Corporation (Intel Corporation)
• Original Assignee: Intel IP Corporation (Intel Corporation)
• Inventors: Han, Seunghee, Heo, Youn Hyoung, Fwu, Jong-Kae, Davydov, Alexei
• Application Number:
  US14/127,482
• Publication Number:
  US 20150004969A1
• Time in Patent Office: Days
• US Class Current: 455/434
• CPC Class Codes: H04B 7/0417 Feedback systems
• CPC Class Codes: H04B 7/0456 Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
• CPC Class Codes: H04J 3/00 Time-division multiplex systems H04J14/00 takes precedence; relay systems H04B7/14; selecting techniques H04Q
• CPC Class Codes: H04L 1/18 Automatic repetition systems, e.g. Van Duuren systems
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 2209/24 Key scheduling, i.e. generating round keys or sub-keys for block encryption
• CPC Class Codes: H04L 2209/80 Wireless network architectures or network communication protocols for wireless network security H04W12/00
• CPC Class Codes: H04L 43/08 Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04L 5/0062 Avoidance of ingress interference, e.g. ham radio channels
• CPC Class Codes: H04L 5/0076 Allocation utility-based
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04L 5/0096 Indication of changes in allocation
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04L 5/22 : using time-division multiplexing
• CPC Class Codes: H04L 63/0428 : wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/30 : for supporting lawful interception, monitoring or retaining of communications or communication related information circuit switched telephony call monitoring H04M3/2281
• CPC Class Codes: H04L 65/1104 : Session initiation protocol [SIP]
• CPC Class Codes: H04L 65/611 : for multicast or broadcast systems for broadcast or conference H04L12/18; arrangements for broadcast or distribution combined with broadcast H04H20/00; arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time H04H60/00; selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS], H04W4/06
• CPC Class Codes: H04L 65/65 : Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
• CPC Class Codes: H04L 65/762 : at the source reformatting of additional data in video distribution servers H04N21/2355
• CPC Class Codes: H04L 65/80 : Responding to QoS
• CPC Class Codes: H04L 67/02 : based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 9/14 : using a plurality of keys or algorithms
• CPC Class Codes: H04W 12/02 : Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
• CPC Class Codes: H04W 12/0431 : Key distribution or pre-distribution; Key agreement
• CPC Class Codes: H04W 12/50 : Secure pairing of devices
• CPC Class Codes: H04W 16/32 : Hierarchical cell structures
• CPC Class Codes: H04W 24/02 : Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/10 : Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 28/0231 : based on communication conditions dynamic wireless traffic scheduling definition based on channel quality criteria H04W72/54
• CPC Class Codes: H04W 36/0066 : of control information between different types of networks in order to establish a new radio link in the target network
• CPC Class Codes: H04W 36/0069 : in case of dual connectivity, e.g. decoupled uplink/downlink
• CPC Class Codes: H04W 36/00692 : using simultaneous multiple data streams, e.g. cooperative multipoint [CoMP], carrier aggregation [CA] or multiple input multiple output [MIMO] allocation of physical resources in CoMP or in CA H04L5/0035
• CPC Class Codes: H04W 36/22 : for handling the traffic
• CPC Class Codes: H04W 4/06 : Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• 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 48/10 : using broadcasted information
• CPC Class Codes: H04W 48/16 : Discovering, processing access restriction or access information
• CPC Class Codes: H04W 48/20 : Selecting an access point
• CPC Class Codes: H04W 52/0251 : using monitoring of local events, e.g. events related to user activity
• CPC Class Codes: H04W 56/001 : Synchronization between nodes
• CPC Class Codes: H04W 68/02 : Arrangements for increasing efficiency of notification or paging channel
• CPC Class Codes: H04W 72/00 : Local resource management
• CPC Class Codes: H04W 72/02 : Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/0446 : Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/046 : the resource being in the space domain, e.g. beams
• CPC Class Codes: H04W 72/12 : Wireless traffic scheduling
• CPC Class Codes: H04W 72/1263 : Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
• CPC Class Codes: H04W 72/20 : Control channels or signalling for resource management
• 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 74/00 : Wireless channel access
• CPC Class Codes: H04W 76/11 : Allocation or use of connection identifiers
• CPC Class Codes: H04W 76/14 : Direct-mode setup
• CPC Class Codes: H04W 76/27 : Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/28 : Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 8/005 : Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 84/045 : using private Base Stations, e.g. femto Base Stations, home Node B
• CPC Class Codes: H04W 84/12 : WLAN [Wireless Local Area Networks]
• 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: Y02B 70/30 : Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

The embodiments described herein relate to a user equipment (“UE”) and a plurality of nodes in a wireless network. A UE may be adapted to receive from a node a discovery signal that includes a base sequence. The base sequence may distinguish a first group of collocated nodes, comprising a first cell cluster, from a second group of collocated nodes, comprising a second cell cluster. The UE may further be adapted to receive from the node an orthogonal sequence, also included in the discovery signal. The orthogonal sequence may distinguish a first cell from other collocated cells so that cells within a cell cluster are separately identifiable. In further embodiments, the conjugate of sequences may be used to increase the amount of sequences available to distinguish cells and/or cell clusters. Other embodiments are described herein.

Claims

1-25. -25. (canceled)

26. An apparatus to be implemented in a user equipment (“

UE”

), the apparatus comprising;

transceiver circuitry to receive a discovery signal from a node associated with a cell, the discovery signal to include a base sequence and an orthogonal sequence; and

processing circuitry, communicatively coupled with the transceiver circuitry, to determine an identity of a cell cluster that includes the cell based on the base sequence and to determine an identity of the cell based on the orthogonal sequence.

27. The apparatus of claim 26, wherein the identity of the cell is at least part of a physical layer cell identity (“

PCI”

).

28. The apparatus of claim 27, wherein the transceiver circuitry is further to transmit the at least part of the PCI to an evolved Node B (“

eNB”

).

29. The apparatus of claim 26, wherein the base sequence is a Zadoff-Chu sequence or a pseudo-random sequence.

30. The apparatus of claim 29, wherein the orthogonal sequence is a code division multiplexed sequence, a frequency division multiplexed sequence, or a time division multiplexed sequence.

31. The apparatus of claim 26, further comprising:

measurement circuitry, communicatively coupled with the transceiver circuitry, to measure a Radio Resource Management (“

RRM”

) metric value associated with the cell.

32. The apparatus of claim 31, wherein the transceiver circuitry is further to transmit the measured RRM metric value to an eNB that is to serve the UE, where a Radio Resource Control (“

RRC”

) state of the UE is connected.

33. The apparatus of claim 31, wherein the processing circuitry is further to compare the measured RRM metric value with a threshold value where a RRC state of the UE is idle.

34. The apparatus of claim 33, wherein the processing circuitry is to read a master information block and system information block type 1 and camp on the cell based on information included in the master information block and the system information block type 1, where the measured RRM metric value does not exceed the predetermined threshold.

35. The apparatus of claim 26, wherein the transceiver circuitry is to receive the discovery signal through a new carrier type.

36. An apparatus to be included in a node, the apparatus comprising:

processing circuitry to provide a first wireless cell, the first wireless cell included in a cell cluster that is to have at least a second wireless cell; and

transceiver circuitry, communicatively coupled with the processing circuitry, to transmit a first sequence to a user equipment (“

UE”

), wherein the first sequence is uniform with a second sequence associated with the second wireless cell in the cell cluster.

37. The apparatus of claim 36, wherein the first wireless cell and the second wireless cell are small cells and the cell cluster is a small cell cluster with coverage at least partially overlaying a macro cell.

38. The apparatus of claim 37, wherein the first and second wireless cells of the small cell cluster operate on a different frequency than the macro cell.

39. The apparatus of claim 36, wherein the processing circuitry is further to generate the first sequence so that it is uniform with the second sequence.

40. The apparatus of claim 36, wherein the first sequence is included in a discovery signal and further wherein the transceiver circuitry is to transmit the discovery signal to the UE.

41. The apparatus of claim 40, wherein the processing circuitry is further to

generate a unique sequence to be associated with the first wireless cell that distinguishes the first wireless cell from the second wireless cell in the cell cluster;

and

the transceiver circuitry is further to transmit the unique sequence to the UE in the discovery signal.

42. An apparatus to be included in a low-powered radio access node, the apparatus comprising:

processing circuitry to provide a wireless cell; and

transceiver circuitry, communicatively coupled with the processing circuitry, to transmit a discovery signal having a first sequence and a second sequence, the second sequence to be a conjugate of the first sequence.

43. The apparatus of claim 42, wherein the low-powered radio access node is one of a picocell, a femtocell, a remote radio head, and a microcell.

44. The apparatus of claim 42, wherein the processing circuitry is further to generate the first sequence and conjugate the first sequence to generate the second sequence.

45. The apparatus of claim 42, further comprising:

storage circuitry, communicatively coupled with the transceiver circuitry, to store the first sequence as a predetermined value.

46. The apparatus of claim 42, wherein the transceiver circuitry is to discontinuously transmit the discovery signal with a periodicity greater than one hundred milliseconds.

47. An apparatus that is to be included in a user equipment (“

UE”

), the apparatus comprising;

processing circuitry to identify a plurality of wireless cells provided by a plurality of nodes; and

transceiver circuitry, communicatively coupled with the processing circuitry, to receive a first sequence and a conjugate of the first sequence from at least one node of the plurality of nodes.

48. The apparatus of claim 47, wherein the processing circuitry is to identify a first wireless cell of the plurality of wireless cells based on the first sequence and the conjugate of the first sequence.

49. The apparatus of claim 47, wherein the processing circuitry is to identify the plurality of wireless cells based on the first sequence and the conjugate of the first sequence.

50. The apparatus of claim 47, wherein the processing circuitry is to identify a macro cell based on the first sequence and is to identify a first wireless cell of the plurality of wireless cells based on the conjugate of the first sequence.