Method, a Device and a System For Duplex Communications
First Claim
1. A method for duplex communications comprising the steps of allocating two or more frequencies for information transfer (304) and of transferring information in a first direction on a first number of frequencies belonging to said two or more frequencies and in a second direction (306, 406, 407) on a second number of frequencies belonging to said two or more frequencies but different from the first number of frequencies, characterized in that it further has the step oftransferring information at a certain time instant on a first frequency belonging to said first number of frequencies in the second transfer direction (308, 306, 406).
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Accused Products
Abstract
A method, a device, and a system for duplex communications. Uplink and downlink frequencies are allocated in an orthogonal manner such that at one time instant a certain carrier frequency is used for uplink (downlink) transmission and at some other time instant for downlink (uplink) transmission. Correspondingly, at said one time instant a second carrier frequency is used for downlink (uplink) transmission and at said some other time instant optionally for uplink (downlink) transmission.
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Citations
63 Claims
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1. A method for duplex communications comprising the steps of allocating two or more frequencies for information transfer (304) and of transferring information in a first direction on a first number of frequencies belonging to said two or more frequencies and in a second direction (306, 406, 407) on a second number of frequencies belonging to said two or more frequencies but different from the first number of frequencies, characterized in that it further has the step of
transferring information at a certain time instant on a first frequency belonging to said first number of frequencies in the second transfer direction (308, 306, 406).
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23. A method for duplex communications between a first and a second transceiver unit characterized in that it has the steps of
transferring information during a first time period on a first carrier frequency in a first transfer direction between said first and second transceiver units (406), transferring information during said first time period on a second carrier frequency in a second transfer direction between said first and second transceiver units (407), and transferring information during a second time period substantially on said first carrier frequency in said second transfer direction between said first and second transceiver units (308, 407).
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24. A communications device comprising a transceiver (508, 608) for wireless duplex communication, further comprising processing (502, 602) and memory means (504, 604) for processing and storing instructions and data, characterized in that it is configured to
transfer information during a first time period on a first carrier frequency in a first transfer direction, transfer information during said first time period on a second carrier frequency in a second transfer direction, and transfer information during a second time period substantially on said first carrier frequency in said second transfer direction.
- 38. A system comprising one or more transceivers (508, 608) capable of duplex data transfer, said system further comprising processing (502, 602) and memory means (504, 604) for processing and storing instructions and data, said system configured to allocate two or more carrier frequencies for information transfer characterized in that for the duration of a first time period a first carrier frequency is allocated for information transfer in a first direction and a second carrier frequency allocated for information transfer in a second direction, and for the duration of a second time period said first carrier frequency is allocated for information transfer in said second direction.
Specification