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    • 42. 发明公开
    • SYSTEM AND METHOD FOR RATE ADAPTATION OF A MULTIRATE VOCODER
    • 方法和装置进行更速率声码器的速率适配
    • EP1076950A1
    • 2001-02-21
    • EP99923111.1
    • 1999-05-14
    • Conexant Systems, Inc.
    • KOMAILI, JalehWAN, Yongbing
    • H04L1/12
    • H04L1/0011G10L19/24H04L1/0014H04L1/0025H04L1/0026H04L1/0059H04W28/22H04W88/181Y10S370/914
    • The present invention includes a time-division-multiple-access (TDMA) communication system having a base station and at least one mobile station, each transmitting and receiving an analog radio-frequency signal carrying digitally coded speech. The speech is encoded using a vocoder which samples a voice signal at variable encoding rates. During periods when the radio-frequency channel is experiencing high levels of channel interference, the encoded voice channel having a lower encoding rate is chosen. This low-rate encoded voice is combined with the high degree of channel coding necessary to ensure reliable transmission. When the radio-frequency channel is experiencing low levels of channel interference, less channel coding is necessary and the vocoder having a higher encoding rate is used. The high-rate encoded voice is combined with the lower degree of channel coding necessary to ensure reliable transmission. The appropriate levels of channel coding necessary for reliable transmission are determined by various channel metrics, such as frame erase rate and bit error rate. The determination of the appropriate vocoder rate and level of channel coding for both the uplink and downlink may be determined centrally at the base station, with the vocoder rate and level of channel coding for the uplink being relayed to the mobile station. Alternatively, the appropriate vocoder rate and level of channel coding for the downlink may be determined by the mobile station, and the appropriate vocoder rate and level of channel coding for the uplink may be determined by the base station.
    • 48. 发明公开
    • METHOD AND RADIO NODE FOR ENABLING USE OF HIGH ORDER MODULATION IN A RADIO COMMUNICATION WITH A USER EQUIPMENT
    • 方法及无线KNOT为使高阶调制的使用在无线电通信与用户设备
    • EP3031153A1
    • 2016-06-15
    • EP14741430.4
    • 2014-06-26
    • Telefonaktiebolaget LM Ericsson (publ)
    • HAMMARWALL, DavidWANG, Meng
    • H04L1/00
    • H04L1/0005H04L1/0003H04L1/0009H04L1/0011H04L1/0016H04L1/0025H04L1/0026H04W72/082H04W88/02Y02D50/10
    • A method and radio node for enabling higher-order modulation in a radio communication with a first UE. A first table configuration comprises at least one of a first Modulation and Coding Scheme, MCS, table and a first Channel Quality Indicator, CQI, table which tables support a certain maximum modulation order. When the radio node detects that a modulation order higher than the maximum modulation order of the first table configuration is potentially possible to use in the radio communication, the radio node instructs the first UE to apply a second table configuration which comprises at least one of a second MCS table and a second CQI table which second tables support the higher modulation order. At least one entry for at least one modulation order in the tables of the first table configuration is maintained in the tables of the second table configuration as a fall-back in case it is desirable to use the at least one modulation order of the first table configuration when the second table configuration is applied. Thereby, a higher data rate can be achieved in the radio communication
    • 用于在无线电通信的方式与第一UE使高阶调制的方法和无线电节点。 第一表配置包括第一调制和编码方案,MCS,表和一个第一信道质量指示符CQI表中的其中至少一个表支持特定的最大调制阶数。 当无线电节点检测比第一表配置的最大调制阶数做了调制阶数越高潜在可能在无线电通信中使用,所述无线节点指示所述第一UE应用第二表配置,它包括的至少一个 第二MCS表和第二CQI表哪个二手表支持更高的调制阶数。 第一表配置的表中至少一个条目用于至少一个调制阶保持在第二表配置为回退的情况下,理想的是使用所述第一表的所述至少一个调制阶的表格中 配置当第二表配置被应用。 由此,更高的数据速率可以在无线电通信来取得