Transmission of information in a wireless communication system
Methods, devices, and systems for the transmission of information in a wireless communication system are disclosed. In one embodiment, a method for the transmission of information in a wireless communication system comprises receiving a downlink message, wherein the downlink message includes a first control channel element; determining a first index using the location of the first control channel element; determining a second index; determining a first orthogonal resource using the first index; determining a second orthogonal resource using the second index; spreading an uplink message using the first orthogonal resource to form a first spread signal; spreading the uplink message using a second orthogonal resource to form a second spread signal; transmitting the first spread signal using a first antenna; and transmitting the second spread signal using a second antenna.
1. A method at a network element in a wireless communication system, comprising:
transmitting, to a user equipment, a downlink message using orthogonal frequency division multiplexing (OFDM) symbols, wherein the downlink message comprises a first control channel element, and,
wherein, a location of the first control channel element is associated with a first index, and,
wherein, a second index is based on the first index, and,
wherein, an indicator of a first orthogonal resource is associated with the first index, and an indicator of a second orthogonal resource is associated with the second index;
receiving an uplink transmission from the user equipment;
despreading the received uplink transmission into a first modulated message using the first orthogonal resource, and, despreading the received uplink transmission into a second modulated message using the second orthogonal resource.
2. The method of claim 1 , further comprising sending a second downlink message, the second downlink message being associated to the second orthogonal resource.
3. The method of claim 1 , wherein a number of control channel elements of the downlink message is greater than or equal to the number of orthogonal resources assigned to the user equipment.
4. The method of claim 1 , further comprising changing the number of control channel elements of the downlink message to match the number of orthogonal resources assigned to the user equipment.
5. The method of claim 1 , further comprising allocating a reserved control channel element of the downlink message to match the number of orthogonal resources assigned to the user equipment.
6. The method of claim 1 , further comprising assigning to the user equipment an offset from the first control channel element to a second control channel element associated with the downlink message, wherein the downlink message is a physical downlink control channel message, and a selection of the second control channel element is limited to the first and second control channel elements of the downlink message corresponding to a physical uplink control channel resource transmitted in a same physical uplink control channel resource block.
7. The method of claim 1 , wherein the downlink message comprises a second control channel element, the second control channel element being associated to the second orthogonal resource.
8. The method of claim 1 , wherein the second orthogonal resource is derivable from an index of the first control channel element.
9. The method of claim 1 , wherein the second orthogonal resource is derivable from the first orthogonal resource.
10. A network element in a wireless communication system, comprising:
a processor; and
a communications subsystem;
wherein the processor and the communications subsystem cooperate to:
transmit, to a user equipment, a downlink message using orthogonal frequency division multiplexing (OFDM) symbols, wherein the downlink message comprises a first control channel element, and,
wherein, a location of the first control channel element is associated with a first index, and,
wherein, a second index is based on the first index, and,
wherein, an indicator of a first orthogonal resource is associated with the first index, and an indicator of a second orthogonal resource is associated with the second index;
receive an uplink transmission from the user equipment;
despread the received uplink transmission into a first modulated message using the first orthogonal resource, and, despread the received uplink transmission into a second modulated message using the second orthogonal resource.
11. The network element of claim 10 , wherein the processor and the communications subsystem further cooperate to send a second downlink message, the second downlink message being associated to the second orthogonal resource.
12. The network element of claim 10 , wherein a number of control channel elements of the downlink message is greater than or equal to the number of orthogonal resources assigned to the user equipment.
13. The network element of claim 10 , wherein the processor and the communications subsystem further cooperate to change the number of control channel elements of the downlink message to match the number of orthogonal resources assigned to the user equipment.
14. The network element of claim 10 , wherein the processor and the communications subsystem further cooperate to allocate a reserved control channel element of the downlink message to match the number of orthogonal resources assigned to the user equipment.
15. The network element of claim 10 , further comprising assigning to the user equipment an offset from the first control channel element to a second control channel element associated with the downlink message, wherein the downlink message is a physical downlink control channel message, and a selection of the second control channel element is limited to the first and second control channel elements of the downlink message corresponding to a physical uplink control channel resource transmitted in a same physical uplink control channel resource block.
16. The network element of claim 10 , wherein the downlink message comprises a second control channel element, the second control channel element being associated to the second orthogonal resource.
17. The network element of claim 10 , wherein the second orthogonal resource is derivable from an index of the first control channel element.
18. The network element of claim 10 , wherein the second orthogonal resource is derivable from the first orthogonal resource.