Defination of 4G
Services | UGS | RTPS | NRTPS | BE | UGS/AD |
Real time service(e.g.VoIP) | Real time service(e.g. MPEG) | Non real time service(e.g. File transfer) | Provides best service among all | When UGS in inactive UGS/AD will become active | |
Fixed size data packet | Variable size data packet | variable size data packet(High B\W FTP) | combination of UGS and RTPS | ||
Eliminate overhead & latency | NA | NA | Overhead and latency | ||
BS must provide fixed size of data grants | SS specify the size | NA | SS not prohibited for argument | BS must provide fixed size when activated as UGS and variable size when activated as RTPS | |
SS prohibited for arguments | SS prohibited for arguments, | SS prohibited for argument | SS prohibited not for argument | ||
BS prohibited for unicast | BS only providede with unicast | BS provides periodic unicast on regular basis even during congestion | Multicast when activated as UGS and unicast when activated as RTPS | ||
Parameters: | Unsolicited Grant Size | Nominal Polling Interval | Nominal Polling Interval | Minimum Reserved Traffic Rate | Nominal Polling Interval |
Grants Per Interval | Minimum Reserved Traffic Rate | Minimum Reserved Traffic Rate | Traffic Priority | Nominal Grant Per Interval | |
No piggyback requests | No piggyback requests | Traffic Priority | Piggyback allowed | Piggyback allowed | |
Nominal Grant Per Interval | Unsolicited Grant Size |
Need
Ranging Procedure:
SR. NO | QoS | Patent no. | |
Conventional Invention | Present Invention | ||
1 | Basic conventional TTI was not adaptable,it was concept of fixed TTI. | Here by knowing the protocol service used in QOS adaptivity is possible in TTI. | EP1816807A1 |
2 | Pilot signals are too less in uplink signals as compared to downlink so QOS is decreased. | Using precoding matrix determiner we can increase the pilot signals. | EP1816815A1 |
3 | Time consumed to transmit data from MAC layer to PHY layer is more. | Time consumed here is less as here the ARQ retransmission timer will start after HARQ retransmission. | EP1821446A2 |
4 | Subscriber selects cluster as per the BS broadcast of the pilot carrier | Subscriber selects one or more Cluster using the the SINR value and low traffic loading of pilot carrier | US7164669B2 |
5 | Subscriber selects one or more Cluster using the the SINR value and low traffic loading of pilot carrier to increase the quality. | Here SINR value, Base station ID, frequency of physical channel, and the channel quality measurement information are required to increase the quality. | EP1473956A2 |
6 | Subscriber station authentication method, a protocol configuration method, and a device thereof in a wireless portable Internet system for allowing authentication was not allowed during handover. | Authentication from subscriber station in wireless portable network system is allowed, comprises of two steps: (1) SS transmitts basic capability negotiatiiion message (SBC-REQ) to BS. (2) SS receives a reply message (SBC-RSP) on the basic capability negotiation message from the BS. | US20070210894 |
7 | BS allocates resources to the MS on the assumption that MS is in the worst channel so BS cannot know the channel state of an MS. | The initial ranging is performed after a BS request in order to acquire synchronization between the BS and the MS on the basis of UL-MAP with IE. | US20070202882 |
8 | In conventional invention for ranging response RNS_RSP signal is needed. That is nothing but delay in the uplink traffic transmission. | 1.) Reducing the delay in uplink data transmission of portable subscriber station by including a ranging parameter for bandwidth request code in UL_MAP and eliminating RNG_RSP.
2.) In addition ranging process additionally performed with bandwidth request. |
WO2007037633 |
SR. NO | Frame structure | Patent no. | |
Conventional Invention | Present Invention | ||
1 | Switching noise in the oscillation signal can?t be removed and detection of the failure was not possible. | Isolation circuit is provided to reduce the effect of the switching noise and alarm circuit is also provided for the detection of the failure of the oscillation signal. | WO2007083924A1 |