Distributed location system

A method for determining location of a first MU (mobile unit) of a cellular network, wherein said first MU receives signals of a first plurality of signals bearing identifiable timing references transmitted from respective radio sources, comprising:

• measuring respective reception times of a second plurality of radio sources in a second MU assigned for a provisional reference unit, wherein at least one BTS (base transceiver station) is received by said second MU,
• downloading available navigation satellite data by said second MU,
• calculating synchronization between said second plurality of radio sources,
• calculating location parameters of said second MU,
• transferring said respective reception times and location parameters of said second MU assigned for a provisional reference unit, to a location processing unit,
• measuring respective reception times of said first plurality of radio sources in said first MU, and
• calculating a location of said first MU by comparing said reception times of said first plurality of radio sources by said first MU with said reception times of said second plurality of radio sources of said second MU, whereby said second MU having location parameters and whereby said first MU receives signals of said at least one BTS received by said second MU.

A method for determining location of a first MU (mobile unit) of a cellular network, wherein said first MU receives signals of a first plurality of signals bearing identifiable timing references transmitted from respective radio sources, comprising:

• measuring respective reception times of a second plurality of radio sources in a second MU assigned for a provisional reference unit, wherein at least one BTS (base transceiver station) is received by said second MU,
• downloading system time of a navigation satellite system by said second MU,
• calculating synchronization between said second plurality of radio sources,
• calculating location data of said second MU,
• transferring said respective reception times and said satellite system time by said second MU assigned for a provisional reference unit, to a location processing unit,
• measuring respective reception times of said first plurality of radio sources in said first MU, and
• calculating a location of said first MU by comparing said reception times of said first plurality of radio sources by said first MU with said reception times of said second plurality of radio sources of said second MU, whereby said second MU having location data and whereby said first MU receives signals of said at least one BTS received by said second MU.