506: The arbitration apparatus determines whether the high frequency band corresponding to the MODEM 1 conflicts with the high frequency band corresponding to the MODEM 2. The arbitration apparatus or the memory stores the preset correspondence table, where the preset correspondence table is used to indicate a frequency band conflict status between the MODEM 1 and the MODEM 2. The frequency band conflict status includes: at least one of conflict frequency band information or non-conflict frequency band information of the MODEM 1 and the MODEM 2.
For example, it can be learned from FIG. 4 that if the NR access standard supported by the MODEM 1 supports operating in a millimeter-wave frequency band, and a service of the MODEM 2 operates in a non-millimeter-wave frequency band, no conflict occurs when services of the two SIMs use service resources. In this case, the services can be performed concurrently. In addition, if the MODEM 1 operates in a high frequency band, and the MODEM 2 operates in a middle frequency or a low frequency, no conflict occurs when the services of the two SIMs use radio frequency front ends. In this case, the services can be performed concurrently. Therefore, a preset correspondence table, for example, a table of frequency bands that do not conflict and that are corresponding to the two MODEMs, as shown in Table 1 below, may be pre-established on the arbitration apparatus.
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