Section: 9.9.4.3 EPS quality of service
Content: The purpose of the EPS quality of service information element is to specify the QoS parameters for an EPS bearer context. The EPS quality of service information element is coded as shown in figure 9.9.4.3.1 and table 9.9.4.3.1. The EPS quality of service is a type 4 information element with a minimum length of 3 octets and a maximum length of 15 octets. Octets 4-15 are optional. If octet 4 is included, then octets 5-7 shall also be included, and octets 8-15 may be included. If octet 8 is included, then octets 4-11 shall also be included, and octets 12-15 may be included. If octet 12 is included, then octets 4-15 shall also be included. The length of the EPS QoS IE can be either 3 octets, 7 octets, 11 octets or 15 octets. Refer to 3GPP TS 23.203[ Policy and charging control architecture ]  [7] for a detailed description of the QoS Class Identifier (QCI). Figure 9.9.4.3.1: EPS quality of service information element Table 9.9.4.3.1: EPS quality of service information element