Method and apparatus for code division switching

摘要

Time division multiplexed input signals (i.e., separated into time slots) are spread in each time slot with a destination code. This spreading is applied for destination identification as opposed to signal information modulation. Each spreading signal is associated with a particular destination for a particular time slot. These spread signals are then combined on a code division bus. Output signals for retransmission to the destinations are recovered from the bus by application of despreading codes. Each despread signal has a destination code which appears in its individual time slot. In a variant code division multiplexed signals are directed to a destination by use of time slot interchanger to achieve time division switching to route the CDMA multiplexed channels.

主权项

1. A method for routing a plurality of code division signals, comprising:
receiving, via a switch, the plurality of code division signals, wherein the switch comprises a time multiplex switch, wherein the receiving comprises:
despreading the plurality of code division signals;demodulating the plurality of code division signals; andinputting the plurality of code division signals into the time multiplex switch; switching, via the switch, the plurality of code division signals, wherein the switching comprises:
coupling the plurality of code division signals at an input to an output; andrearranging a time slot in each frame of the plurality of code division signals so that each outgoing code division signal is directed to a time slot corresponding to a signal destination; and routing, via the switch, the plurality of code division signals to a proper destination.