Method for generating a frame in an orthogonal frequency division multiple access communication system
View Patent ↗Disclosed is a method for generating a frame in an Orthogonal Frequency Division Multiple Access communication system. The method includes generating a frame having a global information zone and a local information zone, wherein the global information zone includes information that is necessary to be received commonly in all of user terminals; and the local information zone includes user terminal-by-user terminal or service-by-service traffic that is unnecessary to be received commonly in all of the user terminals.
1. A method for generating a frame in an Orthogonal Frequency Division Multiple Access (OFDMA) communication system, comprising:
generating a frame including a first zone, second zone, and a third zone,
wherein the first zone includes global control information being commonly applied to all user terminals,
wherein the second zone includes a part of local control information, when the part of the local control information based on a user terminal-by-user terminal is transmitted as the global control information, and
wherein the third zone includes a channel according to a MAP for resource allocation, when the part of the local control information based on a user terminal-by-user terminal is transmitted as the global control information.
2. The method of claim 1 , wherein the global control information includes a management type, physical (PHY) synchronization information, channel information, and a base station Identifier (ID).
3. The method of claim 1 , wherein the second zone includes MAP Information Elements (IEs) for providing resource allocation information on a user terminal-by-user terminal basis and a Broadcast Control Channel (BCCH) for broadcasting control information necessary to access a base station from a user terminal, and
wherein each of the MAP IEs includes a number of Connection Identifiers (CIDs), a CID list, an Orthogonal Frequency Division Multiplexing (OFDM) symbol offset, a subchannel offset, a number of OFDMA symbols, and a number of subchannels.
4. The method of claim 1 , wherein the third zone is configured by traffic chunks allocated on a user terminal-by-user terminal basis or service-by-service basis according to the global control information, and includes local MAPs including a type of traffic to be transmitted through associated traffic chunks, and an Adaptive Modulation and Coding (AMC) scheme, and
wherein each of the traffic chunks is a resource configured by at least one segment which is defined by segmenting available resources in a uniform interval on frequency and time domains.
5. The method of claim 1 , wherein the third zone includes at least one Broadcast Control Channel (BCCH) traffic chunk for broadcasting control information necessary to access a base station from a user terminal.
6. The method of claim 1 , wherein the second zone includes a Broadcast Control Channel BCCH for broadcasting control information necessary to access a base station from a user terminal, and
wherein each of MAP Information Elements (IEs) is included in each of local MAPs of traffic chunks configuring the third zone, each of the local MAPs is transmitted in the third zone, and each of the traffic chunks is a resource configured by at least one segment which is defined by segmenting available resources in a uniform interval on frequency and time domains.
7. The method of claim 6 , wherein a user terminal receives a local MAP in a blind detection scheme, identifies a MAP IE, refers to AMC information included in the local MAP, and demodulates and decodes traffic chunk data.
8. The method of claim 1 , wherein each of MAP IEs is included in each of local MAPs of traffic chunks configuring the third zone, a Broadcast Control Channel (BCCH) for broadcasting control information necessary to access a base station from a user terminal is transmitted along with the local MAPs in the third zone, and each of the traffic chunks is a resource configured by at least one segment which is defined by segmenting available resources in a uniform interval on frequency and time domains.
9. The method of claim 8 , wherein a user terminal receives data chunks through a blind detection scheme and BCCH chunks serving as a broadcast signal, after identifying a base station by the global control information transmitted in the first zone, and refers to local MAP information before each of the chunks and processes the data and BCCH chunks.
10. The method of claim 1 , wherein the third zone includes at least one blind detection zone and a Broadcast Control Channel (BCCH) zone, the at least one blind detection zone is configured according to a service class or user terminal Identifier (ID), and
wherein position information about the at least one blind detection zone and the BCCH zone is broadcast through the second zone, each of the traffic chunks is a resource configured by at least one segment which is defined by segmenting available resources in a uniform interval on frequency and time domains.
11. The method of claim 1 , wherein the third zone includes downlink chunks, local MAPs before the downlink chunks are arranged in a head part of the third zone in a same order as the downlink chunks are arranged, and each of the downlink chunks is a resource configured by at least one segment which is defined by segmenting available resources in a uniform interval on frequency and time domains.