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1. 发明申请

US20190059092A1 CONTROLLING ADAPATIVE REFERENCE SIGNAL PATTERNS 审中-公开
公开(公告)号：US20190059092A1
公开(公告)日：2019-02-21
申请号：US16079759
申请日：2017-02-09
申请人： British Telecommunications Public Limited Company
发明人： Michael Robert FITCH , Richard Thomas MACKENZIE
IPC分类号： H04W72/08 , H04L5/00 , H04W24/10
CPC分类号： H04W72/08 , H04L5/0007 , H04L5/0048 , H04L5/0051 , H04L5/0053 , H04L25/0202 , H04W24/10 , H04W72/0446 , H04W88/08
摘要： A base station in a wireless communications network is configured to transmit signals including a plurality of data units, and selecting for transmission a signal configuration including a distribution pattern of reference signals arranged in a predetermined pattern in the data units with a predetermined density. The signal configuration also includes control data indicative of the reference signal density and distribution. A mobile terminal uses the control data to identify the reference signal density and distribution in use by the base station to which it is working or about to hand over, so that it can identify which symbols are appropriate to estimate the channel characteristics. By adapting the symbol density to local circumstances, in particular the likelihood of Doppler spreading, a more reliable acquisition of the base station can be obtained. The symbol density is reduced in the subcarriers remote from the control block, as these are less likely to be used by a mobile terminal in the circumstances in which density can be reduced.

2. 发明申请

US20190028983A1 CELLULAR TELECOMMUNICATIONS NETWORK 审中-公开
公开(公告)号：US20190028983A1
公开(公告)日：2019-01-24
申请号：US16067402
申请日：2016-12-22
申请人： British Telecommunications Public Limited Company
发明人： Richard Thomas MACKENZIE , Michael Robert FITCH , Anvar TUKMANOV
IPC分类号： H04W56/00 , H04W76/11 , H04W72/04 , H04B1/04
摘要： This disclosure provides a base station for a cellular network, and a method of operating the base station in the cellular network, the cellular network also including a second base station, wherein the first and second base stations include first and second oscillators providing a first and second periodic timing pulse respectively, the method including determining a relative timing offset between a first instance of the first periodic timing pulse for transmission of a frame from the first base station and a first instance of the second periodic timing pulse for transmission of a frame from the second base station; determining that the relative timing offset is changeable; and adjusting the first periodic timing pulse to maintain the relative timing offset by varying a first period between instances of the first periodic timing pulse such that the rate of change of the relative timing offset over time is reduced.

3. 发明申请

US20190014478A1 CELLULAR TELECOMMUNICATIONS NETWORK 审中-公开
公开(公告)号：US20190014478A1
公开(公告)日：2019-01-10
申请号：US16023917
申请日：2018-06-29
申请人： British Telecommunications Public Limited Company
发明人： Richard Thomas MACKENZIE , Keith BRIGGS
IPC分类号： H04W16/02 , H04W24/04
摘要： A method of operating a cellular telecommunications network having a plurality of base stations, wherein each base station of the plurality of base stations has an operational parameter being one of a set of values, wherein the set includes k values, the method including defining a first graph comprising a first plurality of nodes and a first plurality of edges, wherein a node of the first plurality of nodes represents a first base station of the plurality of base stations, and an edge of the first plurality of edges represents a first neighboring relationship between two base stations of the plurality of base stations, wherein each edge of the first plurality of edges has an associated first weight value; partitioning the first graph into k sub-first graphs, each having a first subset of the plurality of nodes and a first subset of the plurality of edges, such as to minimize a first sum value of the first weight values of the first subset of the plurality of edges in all k sub-first graphs; calculating a first conflict value for the k sub-first graphs based on the first sum value; determining whether to initiate a change relating to the operating parameter to one or more base stations in the plurality of base stations based on the first conflict value.

4. 发明申请

US20190052427A1 ADAPATIVE REFERENCE SIGNAL PATTERNS 审中-公开
公开(公告)号：US20190052427A1
公开(公告)日：2019-02-14
申请号：US16079794
申请日：2017-02-09
申请人： British Telecommunications Public Limited Company
发明人： Michael Robert FITCH , Richard Thomas MACKENZIE
IPC分类号： H04L5/00
摘要： A mobile terminal in a wireless communications system estimates channel characteristics from transmissions of a base station comprising reference symbols arranged in a first density and distribution. In the event of an impairment in accuracy of channel estimation, the mobile terminal first applies a checking function to determine whether a base station identity conflict is present. If such a conflict is detected, it transmits a report to the base station to initiate a network channel reallocation process to remove the conflict. If no conflict is detected, the base station is instructed to initiate a function to change the density and distribution of the reference symbols. This allows a dynamic system to distinguish between different causes of poor channel quality, allowing adaptation of the transmissions of the base stations in a manner appropriate to the cause identified.

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